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Synchronizing means

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345 - Computer graphics processing and selective visual display systems

345204000 - DISPLAY DRIVING CONTROL CIRCUITRY

345211000 - Display power source

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DocumentTitleDate
20090195532LIQUID CRYSTAL DEVICE AND DRIVING METHOD THEREOF - A liquid crystal display device and a driving method thereof is presented in which a first liquid crystal cell is provided at one side of the data line, and a second liquid crystal cell is provided at the other side thereof. A first switching part is provided for each first liquid crystal cell positioned at an ith horizontal line (wherein i is an integer) to be controlled by the (i−1)th gate line and the ith gate line. A second switching part is provided for each second liquid crystal cell positioned at an ith horizontal line to be controlled by the ith gate line.08-06-2009
20090195531Liquid crystal display, driver chip and driving method thereof - A liquid crystal display and the driving method thereof. The LCD includes a timing controller, a plurality of driver chips and a display panel. The driver chips are cascaded together for driving the display panel to display frames. A driver chip includes a differential receiver, a single-ended receiver, a shift register, a differential transmitter, a single-ended transmitter and a pixel driver. The driver chip receives a pixel signal and drives the display panel according to the pixel signal, and outputs the pixel signal to the next driver chip.08-06-2009
20090195530DISPLAY DRIVE APPARATUS, AND DISPLAY APPARATUS AND DISPLAY DRIVE METHOD THEREOF - A display drive apparatus performs a display drive of a display panel on the basis of display data and comprises a selection drive section for applying a selection signal to each of display pixels arranged in each row of the display panel, a data drive section for generating a drive signal based on the display data, and a power source drive section for setting at least a row as a writing region and at least a region as a designated region separated from the writing region by the number of one or more rows and sequentially moving correspondingly to moving of the writing region, and the power source drive section supplies a power source voltage for operating each display pixel to make each display pixel corresponding to the row of the writing region and each display pixel corresponding to the row of the designated region perform non-display operation.08-06-2009
20090195529Apparatus and method for controlling driving of liquid crystal display device - The present invention involves a technique of recognizing a demand for displaying a shutdown pattern when driving a liquid crystal panel in an inversion method and converting the inversion method into another inversion method causing no horizontal crosstalk. The present invention is achieved by providing an apparatus for controlling driving of a liquid crystal display device, comprising: a timing controller for processing input RGB data by a certain inversion method to supply the data to a data driver and, upon inputting of RGB data of a shutdown pattern, converting the RGB data by an inversion driving method causing no crosstalk to supply the data; a gate driver for outputting gate signals to each gate line of a liquid crystal panel in response to a gate signal control signal; and a data driver for supplying data voltages to each data line of the liquid crystal panel in response to a data signal control signal.08-06-2009
20100149168METHOD OF ADDRESSING A LIQUID CRYSTAL MATRIX SCREEN AND DEVICE APPLYING THIS METHOD - A method is provided for addressing a bistable nematic liquid crystal matrix screen having two stable states in the absence of an applied electric field. The switching of each pixel from a stable state to another stable state, is controlled by a switching electrical voltage pulse obtained by the application of at least one row-addressing signal applied to a row-addressing electrode and the application of at least one column-addressing signal applied to a column-addressing electrode. The features of the row-addressing signals and/or the features of the column-addressing signals are a function of the position of the pixel in the matrix screen.06-17-2010
20100149167Emissive type display device, semiconductor device, electronic device, and power supply line driving method - An emissive type display device includes: a pixel array section having pixels ready for an active matrix driving system; a circuit for setting a peak luminance level of each display frame; and a driving circuit for variably controlling a total application period length of a driving voltage applied to a power supply line connected to each pixel and amplitude of the driving voltage so as to obtain a set peak luminance level, when the set peak luminance level is lower than a set value, the driving circuit dividing the driving voltage into a plurality of times of pulse waveform, and variably controlling the amplitude of the driving voltage at each output time according to the peak luminance level such that the amplitude of the driving voltage at least one output time is lower than a maximum driving voltage in a non-emission period.06-17-2010
20110193853SCANNING SIGNAL LINE DRIVE CIRCUIT, SHIFT REGISTER AND DISPLAY DEVICE - There is provided a display device capable of preventing a malfunction and a display defect due to an off-leak from occurring even when a circuit in a shift register is configured utilizing thin film transistors of relatively large off-leaks. In at least one embodiment, each of bistable circuits that constitute the shift register includes: a thin film transistor for increasing a potential of an output terminal based on a first clock; a thin film transistor for decreasing the potential of the output terminal; a thin film transistor for increasing a potential of a range netA connected to a gate terminal of the thin film transistor based on a start signal; thin film transistors for decreasing the potential of the range netA; a capacitor for increasing the potential of a range netB connected to a gate terminal of the thin film transistor; and a thin film transistor for decreasing the potential of the range netB.08-11-2011
20110193852LIQUID CRYSTAL DISPLAY AND METHOD OF DRIVING THE SAME - There is provided a liquid crystal display for minimizing power consumption. The liquid crystal display includes transmission regions formed in a liquid crystal panel in units of horizontal lines, reflection regions positioned between the transmission regions, first sub pixels formed in the transmission regions, and second sub pixels formed in the reflection regions. A total number of the second sub pixels is smaller than a total number of the first sub pixels.08-11-2011
20110193851Method of Driving an Electro-Phoretic Display and Related Display System - The present invention discloses a method of driving an electro-phoretic display. The electro-phoretic display includes a first display region and a second display region. The method includes: utilizing the first display region to display a first image; updating the first image by a first updating frequency; utilizing the second display region to display a second image; and updating the second image by a second updating frequency; wherein the first image represents a first information, the first information has a first property, and the first updating frequency is corresponding to the first property; the second image represents a second information, the second information has a second property, and the second updating frequency is corresponding to the second property; and the first updating frequency is different from the second updating frequency.08-11-2011
20100073355LIQUID CRYSTAL DISPLAY DEVICE HAVING A SHIFT REGISTER - An LCD device includes a plurality of gate lines formed in an LCD panel; a plurality of driving stages, each of which sequentially outputting a respective enabling scan pulse to a corresponding one of the plurality of gate lines; at least one dummy stage responsive to an enabling scan pulse from a first one of the plurality of driving stages and supplying a disabling scan pulse to a second one of the plurality of driving stages to disable outputting of the enabling scan pulse; and a dummy gate line electrically connected to the at least one dummy stage.03-25-2010
20100073354PANEL ASSEMBLY AND DISPLAY APPARATUS HAVING THE SAME - A panel assembly includes a display panel and a panel driving apparatus. The display panel includes a data line and a gate line extended in a direction that crosses the data line. The panel driving apparatus includes a first gate driving circuit that outputs a first gate signal to the gate line, and a second gate driving circuit disposed in an area that corresponds to an inverter and that outputs a second gate signal to the gate line, the second gate signal being different from the first gate signal.03-25-2010
20100073353DISPLAY METHOD, DISPLAY SYSTEM, MOBILE COMMUNICATION TERMINAL, AND DISPLAY CONTROLLER - When there is a circuit that has to wait for one frame cycle to switch LCD resolution, a user feels uncomfortable because the resolution is switched while the screen is temporarily turned off and blackened or while the screen does keep display but causes flickers. When the user switches to an application that will display in QVGA mode on the LCD while the LCD is displaying in VGA mode, a synchronization signal, etc. are stopped from being output from an LCD controller within a vertical blank period (step S03-25-2010
20100103160Organic light emitting diode display - An organic light emitting diode (OLED) display is provided. The OLED display includes a display panel including pixels formed at each of crossings of a plurality of gate lines and a plurality of data lines, a monitoring signal line formed along an outer area of the display panel, a first signal supply unit that supplies a monitoring signal to the monitoring signal line and generates a first power control signal, a power supply unit that supplies a high potential driving voltage and a low potential driving voltage to the pixels, and a second signal supply unit that monitors the monitoring signal and generates a second power control signal. If the monitoring signal is not monitored, the second signal supply unit controls the power supply unit through the second power control signal and allows the power supply unit to stop supplying one of the high and low potential driving voltages to the pixels.04-29-2010
20130038597FLAT PANEL DISPLAY AND DRIVING CIRCUIT THEREOF - A flat panel display is provided. In particular, a flat panel display including a driving circuit in which a timing controller and a data driver for driving a panel are mounted in a single IC, and a driving circuit thereof are provided. The flat panel display includes a display panel having a plurality of pixels, a gate driver controlling the plurality of pixels, and a plurality of driving circuits processing and converting an image signal and outputting the same to a display panel in a normal mode. The driving circuits generate a black image signal according to a synchronization signal.02-14-2013
20100045656Display driver with charge pumping signals synchronized to different clocks for multiple modes - A display driver generates a respective charge pumping signal and respective driving signals synchronized to a respective same clock signal for each of the CPU and video interface modes. Because such respective signals are synchronized to a respective same clock signal, the noise superimposed on the driving signals applied on a display panel is regular and uniform across the whole display panel, for each of the CPU and video interface modes. Accordingly, affects of such regular noise are advantageously not noticeable to the human eye, for both the video and CPU interface modes of operation.02-25-2010
20100045655DISPLAY - A display is provided, which includes a timing controller, a data driver, and first and second termination resistors. The timing controller transmits a transmission signal, including at least one of a data signal, a clock signal, and a strobe signal, in a differential format and drives current in a pull mode. The data driver reconstructs the data from the transmission signal. One end of each of the first and second termination resistors is connected respectively between the data driver and terminations of first and second transmission signal lines, each signal line being a path through which the transmission signal is transmitted from the timing controller to the data driver and the other ends thereof are connected respectively to first and second termination voltage sources. Thus, it is possible to more simply implement the timing controller on the transmitting side, and also to increase data transmission efficiency.02-25-2010
20100045654Display device and display drive method - A display device includes: a pixel array including pixel circuits arranged in a matrix state, in which each pixel circuit has a light emitting element, a drive transistor, and a storage capacitor storing a threshold voltage of the drive transistor and an inputted signal value; a threshold correction operation means for performing a threshold correction operation plural times, which allows the storage capacitor to store the threshold voltage of the drive transistor before giving the signal value to the storage capacitor; and a cut-off control means for allowing the drive transistor to be cut off in at least one after-correction period and for allowing the drive transistor not to be cut off in at least one after-correction period in plural after-correction periods which are periods after the plural threshold correction operation periods.02-25-2010
20100110062Metod for Synchronizing Display of Images in a Multi-Display Computer System - An image display system synchronizes the display of images on a plurality of display devices. The method entails generating at a first computer system a first signal representing first image data to be displayed on a first display device, generating at a second computer system a second signal representing second image data to be displayed on a second display device, and a method for synchronizing the first and second image data. The synchronizing method includes using a phase-locked loop circuit having a digital rate controller. The digital rate controller allows programmable control of the speed of the phase-locked loop.05-06-2010
20100110061LOCAL AREA IMAGE DISPLAYING SYSTEM - A local area image displaying system is provided for a screen of a display device for controlling a displaying area of the display device. The system includes a pixel matrix, a data driving circuit, a gate driving circuit, a timing controller, and a microprocessor unit. The pixel matrix includes plural pixel units that are arranged in a matrix form to define a global displaying area. The timing controller controls the operation timings of the data driving circuit and the gate driving circuit to selectively and respectively supply a data voltage and a gate voltage to at least one selected pixel unit. The timing controller bases on a local displaying area in which displaying is to be performed to control the data lines and the gate lines covering the local displaying area to supply the voltages so as to enable only the pixel units contained in the local displaying area.05-06-2010
20100026677DISPLAY APPARATUS AND ELECTRONIC DEVICE USING THE SAME - A display apparatus includes two-dimensionally arranged light emitting devices driven by drive circuits, scanning lines and lighting lines connecting the drive circuits in a row direction, and data lines connecting the drive circuits in a column direction, wherein, in a programming scanning period for supplying signals to the data lines, sequentially selecting the scanning lines and setting the signals to the drive circuits connected to the selected scanning lines throughout all scanning lines, the light emitting scanning for sequentially selecting the lighting lines and supplying current corresponding to the signal set to the drive circuits from the drive circuit connected to the selected lighting lines to the light emitting device is performed at least twice, and the length of a period for supplying the currents from the drive circuits connected to the lighting lines to the light emitting devices varies every period of the light emitting scanning.02-04-2010
20090295782ORGANIC LIGHT EMITTING DISPLAY AND METHOD OF DRIVING THE SAME - An organic light emitting display and a driving method thereof that reduces false contour noise and the occurrence of a stripe pattern generated in a digital driving manner. The organic light emitting display includes a scan driver for supplying a scan signal to scan lines, a data driver for supplying a data signal to data lines, and pixels coupled to the scan lines and the data lines. Each of the pixels includes an organic light emitting diode. The organic light emitting diodes of the pixels coupled to a scan line are alternately positioned in a first horizontal line and a second horizontal line adjacent to the first horizontal line, respectively.12-03-2009
20100066724METHOD OF DRIVING DISPLAY PANEL AND DISPLAY APPARATUS USING THE SAME - Disclosed are a method of driving a display panel and a display apparatus using the same, in which a driving voltage is applied to a transistor provided in each pixel of the display to drive the transistor. A voltage level of the driving voltage applied to the transistor is adjusted every predetermined period and the changed driving voltage is applied to the transistor to prevent the operational reliability of the transistor from being lowered by a shift in the threshold voltage of the transistor.03-18-2010
20130088483DISPLAY DEVICE - A display device includes a first-stage output circuit adapted to perform output to a first-stage output signal line as an endmost output signal line out of a plurality of output signal lines disposed in parallel to each other, and the first-stage output circuit includes a start signal line to which a start signal for applying a conducting potential sequentially to the plurality of output signal lines is applied, a first clock signal line to which a first clock signal is applied, a second clock signal line to which a second clock signal is applied, a first transistor having a source to which the first-stage output signal line is connected, and a drain to which the first clock signal line is connected, and a second transistor having a gate to which the start signal line is connected.04-11-2013
20100134473LIQUID CRYSTAL DISPLAY DEVICE - In a liquid crystal display device performing alternating-current driving, at least one of a gate voltage amplitude Vgp−p(p) upon application of a positive polarity voltage and a gate voltage amplitude Vgp−p(n) upon application of a negative polarity voltage is changed in accordance with a liquid crystal driving frequency. Thus, an effective value of a liquid crystal application voltage in a positive polarity is set to be equal to an effective value of a liquid crystal application voltage in a negative polarity irrespective of the liquid crystal driving frequency, so that flicker is prevented from occurring when the liquid crystal driving frequency is switched. As the liquid crystal driving frequency is low, a gate low voltage Vgln after application of the negative polarity voltage is set to be low. Thus, a leak current from a TFT is reduced in the negative polarity, and a liquid crystal element is improved in voltage holding ratio.06-03-2010
20100134475PIXEL DRIVING DEVICE, LIGHT EMITTING DEVICE, AND PROPERTY PARAMETER ACQUISITION METHOD IN A PIXEL DRIVING DEVICE - A pixel driving device has a voltage impressing circuit that outputs a reference voltage that exceeds a threshold voltage of a drive transistor, a voltage measurement circuit, and a property parameter acquisition circuit that acquires a property parameter related to an electronic property of a pixel. The pixel driving device impresses the reference voltage on the pixel that has a light emitting element and the drive transistor. The voltage measurement circuit acquires voltage of a signal line, as measured voltages, after each of a plurality of the settling times elapsing from the time when the reference voltage is cut. The property parameter acquisition circuit acquires, as property parameters, the threshold voltage and a current amplification factor of drive transistor based on values of a plurality of measured voltages acquired by the voltage measurement circuit.06-03-2010
20090303226SOURCE DRIVER CAPABLE OF CONTROLLING SOURCE LINE DRIVING SIGNALS IN A LIQUID CRYSTAL DISPLAY DEVICE - There is provided a source driver capable of controlling the timing of source line driving signals in a liquid crystal display device. The source driver includes a plurality of output circuits, each output circuit including an output buffer and a switch. The output buffer amplifies an analog image signal, and the switch outputs the amplified analog image signal as a source line driving signal in response to a control signal. The source driver further comprises a control circuit for generating the control signal, the control circuit comprising: a delay circuit delaying a switch signal and generating a delayed switch signal; and a multiplexer selecting one of the switch signal and the delayed switch signal in response to a selection signal and outputting the selected signal as the control signal.12-10-2009
20090303225Liquid crystal display and method of driving the same - A liquid crystal display (LCD) device and a driving method thereof for improving a working efficiency of the LCD and reducing manufacturing costs. The liquid crystal display device includes a liquid crystal display panel having liquid crystal cells at crossings of data lines and gate lines, data integrated circuit supplying pixel data via a plurality of data output channels, a gate integrated circuit driving the gate lines, a channel selector for selecting the plurality of data output channels of the data integrated circuits in accordance with a number of the data lines wherein only the selected data output channels contain the pixel data, and a timing controller for controlling the data integrated circuit and the gate integrated circuit.12-10-2009
20090303224LIQUID CRYSTAL DISPLAY DEVICE WITH A TIMING CONTROLLER AND MANUFACTURING THE SAME - A liquid crystal display device that includes a timing controller for outputting processed image signals to a source driver. The timing controller also includes a plurality of mapping circuits such as RSDS data mapping circuit and a mini-LVDS data mapping circuit. The mapping circuits are selectively connected to a differential amplitude generator by a switch element. The switch element is controlled by a control signal generated by a control signal generator formed and integrated on a printed circuit board separate from the timing controller. The switch element can additionally be controlled by automatically detecting a control signal from a source driver to select one of the mapping circuits after the timing controller is implemented in the liquid crystal display device.12-10-2009
20090303223METHOD FOR DRIVING PLASMA DISPLAY PANEL - A method for driving a plasma display panel including a plurality of discharge cells each having a scan electrode and a sustain electrode. One field includes a plurality of subfields each having an address period for generating address discharge in a discharge cell, and a sustain period for alternately applying a sustain pulse to the scan electrode and the sustain electrode to generate sustain discharge in the discharge cell in which the address discharge has been generated. The sustain pulse includes a first sustain pulse rising gently and a second sustain pulse rising more steeply than the first sustain pulse. At least one of the sustain pulses applied secondly and thirdly to the scan electrode is the second sustain pulse, and at least one of the sustain pulses applied secondly and thirdly to the sustain electrode is the second sustain pulse.12-10-2009
20090303222PLASMA DISPLAY DEVICE AND METHOD FOR DRIVING PLASMA DISPLAY PANEL - Provided are a plasma display device and a method for driving the plasma display panel. The plasma display device with a panel having high luminance can generate a stable address discharge without increasing the voltage required to generate an address discharge when the current accumulated time of the panel has increased. To achieve this advantage, the plasma display device includes an accumulated-time-measurement-circuit and a scan-electrode-driving-circuit.12-10-2009
20110012890DISPLAY APPARATUS AND DISPLAY METHOD - An apparatus and method for partially driving a plasma display panel (PDP) includes a PDP with a plurality of bus electrodes, and a plurality of addressing electrodes intersecting the plurality of bus electrodes to create a display area for displaying an image frame. A panel driver selectively drives the plurality of bus and addressing electrodes, and a controller controls the panel driver to exclude from driving at least one among the plurality of bus electrodes and addressing electrodes with respect to a partial area of the PDP. By only partially driving a portion of the PDP, the loads to be driven, costs of the driving, and power consumption can be reduced. Further, the quality and the brightness of an image can be improved by increasing the number of subfields or increasing a sustaining period by an amount of time corresponding to the time saved by excluding the partial area from driving.01-20-2011
20100097366LIQUID CRYSTAL DISPLAY - In one embodiment of the present invention, each pixel includes first and second subpixels. CS bus lines connected to the respective storage capacitors of the first and second subpixels are electrically independent of each other. A CS voltage has a waveform that inverts its polarity at least once a frame, which includes a first subframe for sequentially scanning a series of odd rows and a second SF for sequentially scanning even rows that have been skipped during the first SF. A source signal voltage varies so as to have two frames or subframes with mutually opposite polarities. A CS voltage has a waveform that has quite opposite consequences on the effective voltage of a subpixel of a pixel connected to the j04-22-2010
20100097367LIQUID CRYSTAL DISPLAY DEVICE, SCAN SIGNAL DRIVE DEVICE, LIQUID CRYSTAL DISPLAY DEVICE DRIVE METHOD, SCAN SIGNAL DRIVE METHOD, AND TELEVISION RECEIVER - In one embodiment of the present invention, a liquid crystal display device is disclosed in which a gate driver applies a gate-on pulse so that a second period is longer than a first period. The first period and the second period are defined as follows. Among gate-on pulses applied before the moment of polarity inversion of a data signal, the last end of the gate-on pulse nearest to the moment of the polarity inversion is earlier than the end time of the horizontal period during which the gate-on pulse is applied. The first period starts at the last end of the gate-on pulse and ends at the end time of the horizontal period during which the gate-on pulse is applied. The second period starts at the moment of the polarity inversion and ends at the moment of the application start of the gate-on pulse nearest to the moment of the polarity inversion among the gate-on pulses applied after the polarity inversion. Thus, even when a data signal waveform is not sharp upon polarity inversion, it is possible to suppress display unevenness and perform a high-quality display.04-22-2010
20090267936LIGHT EMITTING DISPLAY, DISPLAY PANEL, AND DRIVING METHOD THEREOF - A light emitting display for compensating for the threshold voltage of transistor or mobility and fully charging a data line. A transistor and first through third switches are formed on a pixel circuit of an organic EL display. The transistor supplies a driving current for emitting an organic EL element (OLED). The first switch diode-connects the transistor. A first storage unit stores a first voltage corresponding to a threshold voltage of the transistor. A second switch transmits a data current in response to a select signal. A second storage unit stores a second voltage corresponding to the data current. A third switch transmits the driving current to the OLED. A third voltage determined by coupling of the first and second storage units is applied to a transistor to supply the driving current to the OLED.10-29-2009
20090267935LIGHT EMITTING DISPLAY, DISPLAY PANEL, AND DRIVING METHOD THEREOF - A light emitting display for compensating for the threshold voltage of transistor or mobility and fully charging a data line. A transistor and first through third switches are formed on a pixel circuit of an organic EL display. The transistor supplies a driving current for emitting an organic EL element (OLED). The first switch diode-connects the transistor. A first storage unit stores a first voltage corresponding to a threshold voltage of the transistor. A second switch transmits a data current in response to a select signal. A second storage unit stores a second voltage corresponding to the data current. A third switch transmits the driving current to the OLED. A third voltage determined by coupling of the first and second storage units is applied to a transistor to supply the driving current to the OLED.10-29-2009
20110063281PIXEL ARRAY AND DRIVING METHOD THEREOF AND FLAT PANEL DISPLAY - A pixel array, a driving method thereof and a flat panel display using the same are provided. The pixel array includes a first, a second, a third, and a fourth scan lines. A plurality of pixels is disposed between the first and the second scan lines. A plurality of pixels is disposed between the third and the fourth scan lines. In a first frame period, a gate driving circuit sequentially provides a driving signal to the first, the second, the fourth and the third scan lines. In a second frame period, the gate driving circuit sequentially provides the driving signal to the second, the first, the third and the fourth scan lines.03-17-2011
20130063414Display and Power Supply Control Method of a Display - A display includes a display panel, a pixel driving unit and a power supply for supplying power to the pixel driving unit. The display panel includes a plurality of pixels arranged in a matrix manner. The pixel driving unit is used for driving the pixels. The power supply includes an input power source, an output capacitor for providing an output voltage, and a control unit for controlling the input power source, such that in a frame period, the input power source charges the output capacitor during the non-refreshing duration of the pixels by the input power source and stops charging the output capacitor during the refreshing duration of the pixels.03-14-2013
20090237391DISPLAY CONTROLLER, DISPLAY DEVICE, DISPLAY SYSTEM, AND METHOD FOR CONTROLLING DISPLAY DEVICE - A display controller is capable of changing a refresh rate, indicative of how often a screen displayed on a display device having a plurality of pixels is switched, between a low refresh rate of 40 Hz and a normal refresh rate of 60 Hz and generates (i) a dot clock (reference clock) serving as a timing signal indicative of a timing of operation in the display device, (ii) video data indicative of an image to be displayed on the screen, (iii) Hsync for defining a horizontal period of a display on the screen, and (vi) Vsync for defining a vertical period of the display on the screen, so as to supply the dot clock, the video data, Hsync, and Vsync to the display device, wherein the display controller includes a dot clock generation circuit for generating the reference clock whose frequency is constant without depending on a change of the refresh rate. This makes it possible to provide the display controller which can suppress occurrence of noise also in switching the refresh rate and which does not allow any screen derangement which is caused by the noise.09-24-2009
20090009507Display controller and method of controlling the same - A display controller according to one embodiment of the present invention includes a control pulse generating part outputting control pulse to a data line controller and a scan line controller driving a display panel, and an intermittent clock generating part generating an intermittent clock synchronized with a reference clock and setting a clock interval based on a timing setting value setting a timing at which the control pulse changes in a predetermined period.01-08-2009
20120113090MATRIX DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - In a plurality of source drivers, a unit start pulse inputted/outputted to/from the source drivers is cascaded between an ante-stage source driver and a post-stage source driver, a horizontal start pulse outputted from a timing controller is inputted to a first-stage source driver, and the duty ratio of a vertical clock is controlled by one of the plurality of cascaded unit start pulses. In a matrix display device, it is thereby possible to provide a timing controller having a simple circuit configuration which needs no counter circuit for generating a vertical clock to be outputted to a gate driver.05-10-2012
20120113089Liquid Crystal Display Device and Driving Method Thereof - A liquid crystal display (LCD) includes: a liquid crystal panel including a plurality of pixels; a data driver applying a data voltage to a plurality of data lines connected to the plurality of pixels; a scan driver applying a scan voltage to a plurality of scan lines connected to the plurality of pixels in synchronization with a scan clock signal controlling an output of the scan signal for the data voltage to be applied to the plurality of pixels; and a boost driver applying a primary boost voltage and a secondary boost voltage to a plurality of boost lines connected to the plurality of pixels in synchronization with a boost clock signal controlling the output of the boost voltage, wherein the boost clock signal has different synchronization from the scan clock signal controlling the output of the scan signal.05-10-2012
20130162623ACTIVE MATRIX DISPLAY DEVICE - A driving circuit for driving a display panel includes a dynamic ratioless shift register which is operated in a stable manner and can expand the degree of freedom of design. In the dynamic ratioless shift register which is provided with thin film transistors having semiconductor layers made of p-Si on a substrate surface, a node which becomes the floating state is connected to a fixed potential through a capacitance element.06-27-2013
20090256833Method for Driving Display Device - A method for driving a display device is provided herein. The display device includes a plurality of scan lines. The method comprises following steps: dividing the scan lines into a plurality of groups, each of which comprises at least two scan lines, i.e. a first and a second scan line; during a first frame period, sequentially enabling the first and second scan line of each group in accordance with a first driving sequence; and during a second frame period, sequentially enabling the first and second scan line of each group in accordance with a second driving sequence, wherein the first driving sequence is different with the second driving sequence.10-15-2009
20100045653PLASMA DISPLAY DEVICE - A plasma display device is provided. The plasma display device may include a plasma display panel (PDP) including an upper substrate having a plurality of scan electrodes and a plurality of sustain electrodes formed thereon and a lower substrate having a plurality of address electrodes formed thereon; and a driving unit applying a number of driving signals to the scan electrodes, the sustain electrodes and the address electrodes, wherein the scan electrodes are divided into two or more groups including first and second groups, at least one of a plurality of subfields includes a first scan period during which a scan signal is applied to the scan electrodes included in the first group, a second scan period during which a scan signal is applied to the scan electrodes included in the second group, and a setting period between the first and second scan periods, and the time of application of a first pulse to the sustain electrodes during the setting period is earlier than the time of application of a second pulse applied to the scan electrodes during the setting period.02-25-2010
20090219276DRIVING DEVICE AND DRIVING METHOD FOR IMAGE DISPLAY DEVICE - A display driving device and method capable of canceling an offset voltage while suppressing a delay in outputting an image signal to the display device by the time required for the image signal to be completely received in the display device. In an exemplary embodiment, when an image signal is input to an operational amplifier, a pixel of the display device, to which a voltage based on the image signal is applied, and an output terminal of the operational amplifier are connected to each other. The image signal is input to the operational amplifier, and, when charges corresponding to an offset voltage generated in the operational amplifier have accumulated in a capacitor, the image signal is input to the operational amplifier together with the charges accumulated in the capacitor while the connection between the pixel and the output terminal of the operational amplifier is maintained.09-03-2009
20100171739DISPLAY DEVICE - The present invention provides a display device which includes a common electrode drive circuit having the single channel constitution which can miniaturize a circuit scale without increasing elements compared to a conventional display device. A display device includes a plurality of pixels and a common electrode drive circuit. The common electrode drive circuit includes a plurality of basic circuits, wherein the basic circuit includes a first circuit which latches a first input signal at a point of time that a clock signal is changed to a first voltage level from a second voltage level; a second circuit which latches a second input signal at the point of time that the clock signal is changed to the first voltage level from the second voltage level; a first switching circuit which is turned on based on the first circuit and a second switching circuit which is turned on based on the voltage second circuit.07-08-2010
20100171737Driving circuit and display device including the same - The display device includes a driving circuit and a panel. The driving circuit is configured to generate a source output enable signal having at least one pulse during one horizontal scanning period in response to a mode signal and configured to generate a source driving signal by latching an image data in response to the source output enable signal. The driving circuit is further configured to generate an internal horizontal synchronization signal in response to the source output enable signal and configured to generate a gate driving signal in response to the internal horizontal synchronization signal. The panel is configured to display the image data in response to the gate driving signal and the source driving signal.07-08-2010
20100171736Plasma display panel and associated methods - A plasma display panel includes electrodes repeatedly disposed on a first substrate in an order of a sustain electrode, a scan electrode, a scan electrode and a sustain electrode, first barrier ribs disposed to overlap the sustain electrodes, and second barrier ribs disposed to overlap the scan electrodes and having a lower height than the first barrier ribs, wherein a space between the first barrier ribs and the second barrier ribs forms a main discharge space, a space between adjacent first barrier ribs forms an auxiliary discharge space, and the scan electrodes are formed to protrude to the auxiliary discharge space.07-08-2010
20100171735DATA DRIVING CIRCUIT FOR FLAT DISPLAY PANEL WITH PARTIAL MODE AND METHOD FOR PROCESSING PIXEL DATA OF PARTIAL WINDOW - A data driving circuit for a flat display panel with a partial mode and a method for processing pixel data of a partial window. The driving circuit includes an input register and a data collection circuit. When the driving circuit is in the partial mode, it determines whether to sequentially read pixel data for pixels of the pixel data of the window from a data area according to a boundary of the window and a scan count, and temporarily stores the pixel data into the data collection circuit. When the scan count indicates that the window is to be displayed, the data collection circuit selects pixel data for pixels from the temporarily stored pixel data for the pixels and accordingly produces pixel data for pixels to the input register so as to sequentially output the pixel data of the window to drive the display panel to display the window.07-08-2010
20090295778OLED Driver and Lighting Apparatus Equipped With the Driver - An OLED driver possesses a square-wave voltage source, a controller and a detector. In accordance with first control, the source generates square-wave voltage and applies the voltage across at least one organic electroluminescence element to drive the element. The controller controls the source in accordance with the first control. The detector detects equivalent capacitance inherent in the element. The controller also judges whether or not the element is normal based on the equivalent capacitance. If the element is normal, the controller operates in accordance with the first control. If the element is not normal, the controller operates in accordance with predetermined second control for the element which is not normal.12-03-2009
20100007649Scan driving circuit and display device including the same - A scan driving circuit includes a shift register unit and a logic circuit unit. The start of a start pulse of an output signal ST01-14-2010
20100007648DRIVING APPARATUS AND DISPLAY DEVICE INCLUDING THE SAME - The present invention relates to a driving device for a liquid crystal display and a driving method thereof. A signal controller of the driving device generates a data signal according to an input image signal input to the display device, generates a clock signal according to the input control signal, and generates a differential pair image signal by modulating the clock signal to the data signal. Here, a data signal period of the differential pair image signal and a clock signal period are converted with a different level and are output. A data driver of the driving device receives the differential pair image signal, divides the data signal and the clock signal from the differential pair image signal, and generates a data voltage by sampling a data signal by using the clock signal.01-14-2010
20100013822LIQUID CRYSTAL DISPLAY - A liquid crystal display (LCD) device is provided. The LCD device includes a LCD panel, which further includes a plurality of scan lines, a gate driving circuit, a clock circuit. The clock circuit includes a clock generator and an adjusting circuit. The clock generator generates a clock signal having a first high voltage level and a first low voltage level. The adjusting circuit, coupled to the clock generator, receives the clock signal and generates an adjusted clock signal having the same period as the clock signal. The adjusted clock signal has a second high voltage level and a second low voltage level. The gate driving circuit, coupled to the clock circuit, receives the adjusted clock signal as a gate driving signal in order to drive the scan lines.01-21-2010
20090309865Image Display Device - During a first period of a set period, a reset switch element of each pixel is turned on to converge a voltage at a control electrode of a TFT to a predetermined voltage, and a step signal having a first voltage level is supplied from a step signal generation circuit. During a second period of the set period, the reset switch element is turned off, and a step signal having a second voltage level is supplied from the step signal generation circuit, whereby a voltage exceeding a second power supply voltage or a voltage exceeding a voltage range supplied from a signal driver section is input as a characteristic value set voltage to the control electrode. Accordingly, even when a relationship between a gate voltage and a drain current of the thin film transistor exhibits a hysteresis characteristic, uniform display can be achieved.12-17-2009
20090309864PLASMA DISPLAY DEVICE AND PLASMA DISPLAY PANEL DRIVE METHOD - A first driving circuit alternately reverses polarities of voltages applied to a first and a second electrode in order to cause sustain discharge between the first and second electrodes. A second driving circuit applies a pulse to a fourth electrode in synchronization with a timing when the Polarities of the voltages to the first and second electrodes are reversed. Further, during the sustain discharge, the second driving circuit keeps a voltage of the fourth electrode after the application of the pulse, at an offset voltage deviated by a Predetermined value from an initial voltage that the fourth electrode has before the generation of the pulse, and thereafter returns the voltage of the fourth electrode to the initial voltage. For example, the offset voltage is set to a value between a high-level voltage and a low-level voltage applied to the first and second electrodes. Consequently, luminescent efficiency can be improved.12-17-2009
20110298784DISPLAY DEVICE - A display device includes a display unit and a plurality of refreshing units. The display unit has a plurality of the display areas. Each of the display areas has a plurality of pixels. Each of the pixels has a memory. The refreshing units respectively control to refresh the pixels of the corresponding display areas at different time periods. Thus, the produced peak current during the pixel refreshing can be reduced, and the stored pixel data can be maintained.12-08-2011
20090201284Liquid crystal display, driver chip and driving method thereof - A liquid crystal display and the driving method thereof. The LCD includes a timing controller, a plurality of driver chips and a display panel. The driver chips are cascaded together for driving the display panel to display frames. A driver chip includes a differential receiver, a single-ended receiver, a shift register, a differential transmitter, a single-ended transmitter and a pixel driver. The driver chip receives a pixel signal and drives the display panel according to the pixel signal, and outputs the pixel signal to the next driver chip.08-13-2009
20110292028DEVICE AND METHOD FOR DRIVING IMAGE DISPLAY DEVICE - A device for driving an image display device that includes an image display panel, a plurality of drivers for driving the image display panel, a Low Voltage Differential Signaling (LVDS) transmission unit for converting external image data and a plurality of control signals including frame ratio setting signals into LVDS signals and transmitting the same, an LVDS reception unit for converting the image data and the plurality of control signals including frame ratio setting signals OP12-01-2011
20110102414DOUBLE-GATE LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display includes a first gate line, a second gate line, a data line, a first pixel unit, a second pixel unit, a gate driver, and a source driver. The first and second gate lines respectively transmit a first and a second gate driving signals provided by the gate driver, while the data line transmits a first and a second data. The first pixel unit displays images according to the first gate driving signal and the first data, while the second pixel unit displays images according to the second gate driving signal and the second data. The source driver includes a logic circuit and a multiplexer circuit. The logic circuit generates an odd/even select signal according to a scan sequence signal and an enable signal. The multiplexer circuit outputs one of the first and second data according to the odd/even select signal.05-05-2011
20100277463TIMING CONTROLLER WITH POWER-SAVING FUNCTION - A time controller with power-saving function is utilized for selecting to drive a display with progressive or interlace scan method based on if two continuous frames are dynamic. The time controller comprises an interlace scan control module, a progressive scan control module, a motion detecting circuit, a scan selecting circuit, and a data selecting circuit. The interlace scan and the progressive scan control modules are utilized for generating control signals of interlace scan and progressive scan according to a video signal, respectively. The motion detecting circuit select the control signals of interlace scan or progressive scan based on if the two continuous frames are dynamic, so as to drive the display. In this way, consumed power of the display is saved and a saw-tooth effect on the video frame is avoided.11-04-2010
20100060625PLASMA DISPLAY DEVICE, AND PLASMA DISPLAY PANEL DRIVING METHOD - Provided to stabilize generation of address discharge and improve gradation characteristics of display images are the following elements: a plasma display panel; a sustain pulse generating circuit; and a ramp voltage generating circuit including a first ramp voltage generating circuit, a second ramp voltage generating circuit, and a switching circuit. The first ramp voltage generating circuit generates a first ramp voltage gently increasing in an initializing period. The second ramp voltage generating circuit generates a second ramp voltage increasing with a gradient gentler than that of the rising edge of a sustain pulse and steeper than that of the first ramp voltage, at the end of each sustain period. The switching circuit stops the operation of the second ramp voltage generating circuit immediately after the second ramp voltage reaches a predetermined electric potential. In at least one sustain period of one field, no sustain pulse but the second ramp voltage is generated.03-11-2010
20090002359SOURCE DRIVER, ELECTRO-OPTICAL DEVICE, PROJECTION-TYPE DISPLAY DEVICE, AND ELECTRONIC INSTRUMENT - A source driver that drives a source line of an electro-optical device includes a receiving circuit that receives image data, a vertical synchronization timing, or a horizontal synchronization timing through a transmission line that transmits the image data, the vertical synchronization timing, or the horizontal synchronization timing, and a source line driver circuit that drives the source line based on the image data in synchronization with the vertical synchronization timing or the horizontal synchronization timing. The receiving circuit compares received data that indicates the image data, the vertical synchronization timing, or the horizontal synchronization timing with given vertical synchronization timing designation data or given horizontal synchronization timing designation data. The vertical synchronization timing or the horizontal synchronization timing is designated by the received data that coincides with the vertical synchronization timing designation data or the horizontal synchronization timing designation data.01-01-2009
20100091006Organic light emitting display device and method of driving the same - An organic light emitting display device capable of compensating for the threshold voltage and mobility of a driving transistor. The organic light emitting display device includes a pixel unit having a plurality of pixels formed at intersection areas of data and scan lines; a scan driving unit sequentially supplying a scan signal to the scan lines; a data driving unit supplying data signals to the data lines; a power supply unit outputting a high-potential pixel power source, a low-potential compensation power source and a low-potential ground power source to drive the pixels; and a power control unit supplying the compensation power source supplied from the power supply unit to the pixel unit during a first period (black frame period) of each frame, and supplying the pixel power source supplied from the power supply unit to the pixel unit during a second period (display frame period) of each of the frames.04-15-2010
20100091007Analog sampling apparatus for liquid crystal display - An analog sampling apparatus for a liquid crystal display device includes: a data driver to generate an analog data voltage; a data output bus line to receive the analog data voltage; a first sampling and holding circuit connected to the data output bus line to compensate an offset voltage in the analog data voltage and to supply the analog data voltage to a data line of a liquid crystal display panel; and a second sampling and holding circuit connected to the data output bus line arranged to sample the analog data voltage while the analog data voltage is supplied to the data line by the first sampling and holding circuit. The first sampling and holding circuit is arranged to supply the analog data voltage while the second sampling and holding circuit samples the analog data voltage, and to sample the analog data voltage while the second sampling and holding circuit supplies the analog data voltage.04-15-2010
20110007064GATE LINE DRIVING MODULE FOR LIQUID CRYSTAL DISPLAY AND LIQUID CRYSTAL DISPLAY USING THE SAME - A gate line driving module used on a liquid crystal display uses clock signal sources in replacement of a high level gate power source, such that the phenomenon of device characteristic drift occurring in the foregoing related art is avoided. The gate line driving module includes a plurality of odd-pixel gate line driving circuits, a plurality of even-pixel gate line driving circuits, and an auxiliary gate line driving circuit. A pair of neighboring odd-pixel gate line driving circuit and even-pixel gate line driving circuit exchange output signals thereof with each other in a forward or feedback manner for ensuring that each the odd-pixel gate line driving circuit and each the even-pixel gate line driving circuit are driven once. The auxiliary gate line driving circuit is used for ensuring that signal iteration of the gate line driving module is under normal operation.01-13-2011
20110169816Gate Output Control Method - An exemplary gate output control method includes the following steps: providing a gate control signal; using an angling control signal to angling modulate the gate control signal so as to generate a modulated gate control signal; and supplying the modulated gate control signal to a first integrated gate driver circuit and a second integrated gate driver circuit, to sequentially control the gate outputs of the first integrated gate driver circuit and the second integrated gate driver circuit. A duty ratio used by the angling control signal at the time of modulating the gate control signal to generate the modulated gate control signal for the first integrated gate driver circuit is different from another duty ratio used by the angling control signal at the time of modulating the gate control signal to generate the modulated gate control signal for the second integrated gate driver circuit.07-14-2011
20100033473Low Color Shift Multi-View Display Device And Display Method Thereof - According to various embodiments of the invention, gamma curves for multiple pixel groups can be calibrated using look-up tables or by using reference voltage groups provided by gamma voltage generators so that the pixels can display multiple images with correct gray levels at different view angles. Therefore, color shift can be avoided or lessened without necessarily using extra circuitry on the display panel. Also, any related light transmittance or light utilization efficiency reduction may be decreased or eliminated.02-11-2010
20100033474DISPLAY DEVICE AND CONTROL METHOD THEREOF - A method of controlling a display device is provided. The method includes the steps of receiving an input data; decoding a stored image to obtain decoded data; accumulating the decoded data to obtain an accumulated value; adding the accumulated value to the input data to obtain a compared value; setting the display device to operate normally when the compared value is identical to an initial value; and displaying a preset frame on the display device when the compared value is different from the initial value.02-11-2010
20090189883Flat Display Apparatus and Control Circuit and Method for Controlling the same - In an exemplary flat display apparatus and control circuit and method for controlling the flat display apparatus, the flat display apparatus includes a plurality of gate driving units, each of which controls the operation of a scan line in the flat display apparatus. The flat display apparatus provides a first gate high level voltage signal and a second gate high level voltage signal to the gate driving units such that the first and second gate high level voltage signals are used as voltage signals transmitted to corresponding scan lines. The first and second gate high level voltage signals respectively include a falling edge with a slope. Duration time of the falling edge of the first gate high level voltage signal is longer than that of the falling edge of the second gate high level voltage signal.07-30-2009
20090231322DRIVING METHOD AND DEVICE FOR A DISPLAY - The present invention relates to a driving device for a display and the method thereof for driving a pixel matrix containing N×M pixel units. The driving device for a display comprises: a first vertical driver generating N first vertical driving signals in sequence, each of N first vertical driving signals being used to drive the first through the K-th pixel units on each row of the pixel matrix; and a second vertical driver generating N second vertical driving signals in sequence, each of N second vertical driving signals being used to drive the (K+1)-th through the M-th pixel units on each row of the pixel matrix.09-17-2009
20090153541LIQUID CRYSTAL PANEL DRIVING APPARATUS - A liquid crystal panel driving apparatus that produces a normal display without damaging the liquid crystal panel even when each of a plurality of timing controllers receives an abnormal display data signal. In an exemplary apparatus, each of the timing controllers transmits an abnormality detection signal, which is generated by detecting an abnormality in the display data signal, to other timing controllers via an abnormality detection line, and each of the timing controllers outputs image data associated with the abnormality detection signal stored in an image data memory.06-18-2009
20110169817APPARATUS FOR COMPENSATING FOR DETERIORATION IN AMOLED - There is provided an apparatus for compensating for deterioration in an active matrix organic light-emitting diode. An apparatus for compensating for deterioration in an active matrix organic light-emitting diode being operated by a pixel driving unit may include: a switching control unit being synchronized with an operation of the pixel driving unit to thereby generate a switching control signal in order to compensate for deterioration in a pixel; and a switch circuit unit connected between an anode of the active matrix organic light-emitting diode and a terminal of a deterioration compensation voltage, being turned on or off according to the switching control signal from the switching control unit, and supplying the deterioration compensation voltage to the anode of the active matrix organic light-emitting diode while being turned on.07-14-2011
20110261047PLASMA DISPLAY APPARATUS AND METHOD OF DRIVING PLASMA DISPLAY PANEL - A plasma display apparatus includes a plasma display panel having a plurality of sustain electrodes and a plurality of scan electrodes, a driver circuit to apply sustain pulses to the plurality of sustain electrodes and the plurality of scan electrodes to generate sustain discharges, and a control circuit to control the driver circuit such that a total light emitting pulse count defined as a total number of sustain pulses in one display frame is set equal to a predetermined pulse count defined as a function of a display load ratio, and such that the total light emitting pulse count is set lower than the predetermined pulse count upon detecting a predetermined condition, wherein the control circuit is configured to cause the driver circuit to selectively generate first sustain pulses with timing for clamping to a predetermined voltage being first timing and second sustain pulses with timing for clamping to the predetermined voltage being second timing, and configured to cause a ratio between a number of the first sustain pulses and a number of the second sustain pulses to be different between a case of the total light emitting pulse count being the predetermined pulse count and a case of the total light emitting pulse count being smaller than the predetermined pulse count.10-27-2011
20100007652LIQUID CRYSTAL DISPLAY DEVICE WITH IMPROVED SWITCHING MEANS - The invention relates to a method for controlling a liquid crystal display, comprising a matrix of pixels arranged in crossed lines and columns and in which a switch in the state of the liquid crystal molecules, controlled by application of an electric control signal between two electrodes (01-14-2010
20100007651PIXEL AND ORGANIC LIGHT EMITTING DISPLAY USING THE SAME - A pixel circuit coupled to a data line, a scan line, an emission control line, a power supply, a reference power source, and a light emitting element, includes: a data switch coupled between the data line and a first node, and having a control electrode coupled to the scan line; a reference switch coupled between the reference power source and a second node, and having a control electrode coupled to the scan line; a capacitor coupled between the first node and the second node; a driving transistor coupled between the power supply and the light emitting element, and having a gate electrode coupled to the second node; and an emission control switch coupled between the power supply and the first node, and having a control electrode coupled to the emission control line.01-14-2010
20110148851Clock data recovery circuit, data transfer device for display device, and data transfer method for display device - A clock data recovery circuit includes a sampling circuit SC that samples input data by 2× over sampling, a frequency detection circuit FD that detects a frequency difference between the input data sampled by the sampling circuit SC and a recovery clock, a phase detection circuit PD that detects a phase difference between the input data sampled by the sampling circuit SC and the recovery clock, a voltage control oscillator circuit VCO that outputs the recovery clock to the sampling circuit SC at least according to the phase difference detected by the phase detection circuit PD, and a frequency detection control circuit FDC that stops an operation of the frequency detection circuit FD while receiving display data as the input data.06-23-2011
20100066725METHOD AND APPARATUS FOR DC LEVEL REDISTRIBUTION - A DC level redistribution method includes the steps of: receiving all positive signals and one negative signal of a plurality of pairs of differential signals; fixing a DC level of a positive signal of a designated pair of differential signals among a plurality of pairs of differential signals as a reference in order to adjust a DC level of a negative signal of the designated pair of differential signals for generating an adjusted negative signal; and taking the adjusted negative signal of the designated pair of differential signals as a reference in order to adjust DC levels of the positive signals of the other pairs of differential signals excluding the designated pair of differential signals. The DC redistribution method may be used in a display system.03-18-2010
20100085348DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A display device and a method of driving the same are provided. The display device includes a display panel including a plurality of pixels defined in an area where a plurality of gate lines and data lines cross one another, a clock generator generating a gate clock signal using a clock generation control signal provided from a timing controller and a gate-on voltage, and a gate driver providing a gate signal to the gate lines in response to the gate clock signal. The gate signal includes a pre-charge period having a first gate-on level and a main-charge period having a second gate-on level that is higher than the first gate-on level.04-08-2010
20100079441ELECTRO-OPTICAL DEVICE, DRIVING METHOD THEREOF, AND ELECTRONIC APPARATUS - A method of driving an electro-optical device having scanning lines, data lines, a switching transistor and a pixel electrode. The device also has an electro-optical layer interposed between the pixel electrode and a counter electrode. The method includes: supplying a data signal alternate between a positive and a negative voltage to the pixel electrode. The positive voltage has a potential greater than a counter electrode potential applied to the counter electrode and the negative voltage is a potential lower than the counter electrode potential; setting the counter electrode potential to reduce a flicker; supplying a first voltage that is either the positive or negative voltage to the pixel electrode in a first period; the other voltage to the pixel electrode in a second period. A ratio of the first period to the second period is variable.04-01-2010
20090167750Apparatus and method for data interface of flat panel display device - An apparatus and method for data interface of a flat panel display device, which is capable of transferring clocks in a state, in which the clocks are embedded in digital data, thereby reducing the number of transfer lines, is disclosed. The apparatus includes a transmitter unit built in a timing controller, to transmit transfer data with an embedding clock embedded between successive pieces of data, and a clock enable signal to indicate the embedding clock, and receiver units respectively built in a plurality of data integrated circuits connected to the timing controller, to separate and detect the embedding clock and the data from the transfer data, in response to the clock enable signal.07-02-2009
20100123708Liquid crystal display - A liquid crystal display is disclosed. The liquid crystal display includes a clock generator generating a first input clock signal and then a second input clock signal; a level shifter shifting the first and second input clock signals and generating clock signals whose voltages decrease stepwise from a gate high voltage, to a modulation voltage that is lower than the gate high voltage, to a gate low voltage that is lower than the modulation voltage; and a liquid crystal panel that includes data lines, gate lines intersecting the data lines, TFTs provided at intersections of the data lines and the gate lines, and a gate shift register sequentially supplying a gate pulse to the gate lines in response to the clock signals input from the level shifter.05-20-2010
20100123709PLASMA DISPLAY APPARATUS - A plasma display apparatus is disclosed. The plasma display apparatus includes a plasma display panel including a scan electrode and a sustain electrode that are positioned parallel to each other, and an address electrode crossing the scan electrode and the sustain electrode and a driver that supplies a reset signal to the scan electrode and supplies a first signal, whose a direction is the same as a direction of the reset signal, to the sustain electrode in a reset period of at least one of a plurality of subfields of a frame. The first signal overlaps a predetermined period during which the reset signal rises to a maximum voltage and then again rises to a voltage less than the maximum voltage.05-20-2010
20090284518Liquid crystal display device, liquid crystal display method, and television receiver - A liquid crystal display device according to one embodiment of the present invention includes a display controller for outputting an image to each panel independently so that the images displayed on a first panel and a second panel are stacked with each other to form one image corresponding to an image source. The display controller includes a luminance ratio adjusting section which adjusts the gray scales of the image outputted, to each liquid crystal panel so that a display response period becomes shorter than a standard predetermined display response period in combining the gray scales, when one combined gray scale is obtained by combining the gray scales of the image outputted to each panel. This allows enhancement in contrast and moving image performance so as to realize a liquid crystal display device having high quality in displaying not only still images but also moving images.11-19-2009
20090085907DRIVING METHOD FOR DRIVER INTEGRATED CIRCUIT - The present invention relates to a driving method for a driver IC, comprising: detecting a polarity of a gate line being driven; when the polarity changes, the driver integrated circuit drives the gate line with a first mode signal; when the polarity does not change, the driver integrated circuit drives the gate line with a second mode signal, a driving current of the first mode signal is greater than that of the second mode signal. In the present invention, the driver IC drives a gate line in different driving modes according to a condition that a polarity of the droved gate line changes. Since a driving current of the first mode signal is greater than that of the second mode signal, the present invention is enabled to minimize a difference between charging delays of pixel electrodes on gate lines, improving a dim line phenomenon.04-02-2009
20090289933DISPLAY DRIVING APPARATUS, DISPLAY MODULE PACKAGE, DISPLAY PANEL MODULE, AND TELEVISION SET - A display driving apparatus includes: n level shift units shifting a voltage level of n pixel data; a step potential providing unit providing a step potential; a change judgment unit judging whether or not each of the n pixel data has changed from pixel data of an immediately previous cycle; a delay unit generating n timing signals changing with different timings; and a control unit performing control such that the display output terminal corresponding to the pixel data judged to have changed by the change judgment unit is provided with: the step potential provided by the step potential providing unit during a first time period included in each of the cycle; and a potential shifted by the corresponding level shift unit during a second time period that is different from each other and is based on a timing of change of the corresponding timing signal.11-26-2009
20090273592PIXEL CIRCUIT, DISPLAY PANEL, AND DRIVING METHOD THEREOF - A pixel circuit includes a first sub-pixel and a second sub-pixel. The first sub-pixel is coupled to a scan line and a data line, so as to determine whether to be enabled according to a first scan signal transmitted on the scan line, and whether to be driven according to a data signal transmitted on the data line. The second sub-pixel is coupled to the scan line, so as to determine whether to be enabled according to the first scan signal. The data signal is in a first state when the first scan signal is in a pre-charged period. The data signal is in a second state during a time interval after the pre-charged period is over and before the first scan signal enters a turn-on period. Voltage polarities of the first state and the second state are opposite. The pixel design can improve color shift and frame flicker.11-05-2009
20090295779DEVICE CONTROLLER, DISPLAY DEVICE, AND CONTROL METHOD FOR CONTROLLING DISPLAY SYSTEM AND DISPLAY DEVICE - In one embodiment of the present invention, a display controller includes a stable pixel writing period in one horizontal period in a display device, the stable pixel writing period being a period during which a voltage outputted from a gate driver is at a high level. The display controller also includes a first stable pixel writing period determination circuit which determines, by using a reference signal independent from the frame rate in the display device, the stable pixel writing period during which the voltage is at the high level. Thus, the display controller can be provided in which, regardless of whether and how the frame rate is changed, the stable pixel writing period can be of a target length.12-03-2009
20090278836METHOD OF DRIVING PLASMA DISPLAY PANEL - A method of driving a plasma display panel is provided. The method includes supplying a data signal to at least one of a plurality of address electrodes during an address period of at least one subfield of a plurality of subfields, and supplying a first signal opposite a direction of the data signal to at least one of the plurality of address electrodes, to which the data signal will be supplied, during a reset period prior to the address period.11-12-2009
20090284521PLASMA DISPLAY DEVICE - A plasma display device of high luminous efficiency is provided. In a plasma display device for performing driving including at least an address period and a sustain-discharge period for emission display, the sustain-discharge period includes a pulse application period and an open period, a voltage of an electrode to which a relatively positive voltage is applied in a sustain-discharge electrode pair in a pulse application period immediately before the open period is set as Vsp, and the voltage of the other electrode is set as Vsn, Vsp-Vsn has a significantly negative value in the open period, and light is emitted by a discharge in the open period.11-19-2009
20090284520PLASMA DISPLAY AND DRIVING METHOD THEREOF - A plasma display and a driving method thereof is provided. The plasma display includes a sustain electrode, a first switch coupling a first power source with a first voltage to the sustain electrode, a second switch coupling a second power source with a second voltage lower than the first voltage to the sustain electrode, an inductor, a power recovery capacitor, a third switch, and a fourth switch. The inductor is coupled to the sustain electrode. The power recovery capacitor is charged with a third voltage between the first and second voltages in a first subfield, and charged with a fourth voltage that is higher than the third voltage in a second subfield. The third and fourth switches couple the inductor to the power recovery capacitor, and are turned on in address periods of the first and second subfields to apply the third and fourth voltages, respectively, to the sustain electrode.11-19-2009
20090284519LIGHT EMITTING DISPLAY AND METHOD FOR DRIVING THE SAME - Disclosed herein are a light emitting display which can compensate for a threshold voltage of a driving switching element, and a method for driving the same. A light emitting display includes a pixel circuit that outputs a driving current corresponding to a data voltage from a data line using a scan signal, a first driving voltage and a second driving voltage; and a light emitting element that emits light by the driving current from the pixel circuit.11-19-2009
20100128020MULTI-PANEL DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A multi-panel display device and a method of driving the same, which can simplify a driving circuit for driving multiple flat panel display devices, thereby decreasing the fabrication cost, are disclosed. In the device configured of an alignment of multiple flat panel display devices for representing a single image, the device comprises multiple flat panel display devices, wherein each flat panel display device includes a display panel configured of a plurality of pixel regions, a data driver driving a plurality of data lines provided in the display panel, and a timing controller receiving image data and synchronization signals from an external source so as to divide the received image data, converting a signal frequency of at least one of the synchronization signals, and converting a size of the divided image data in accordance with the frequency-converted synchronization signal, thereby providing the size-converted divided image data to the data driver.05-27-2010
20090289934Method of driving display device, and display device - A method of driving a display device of a plasma tube array type includes: applying, in a first address period, a scan pulse sequentially to display electrodes, each being one display electrode of each display electrode pair in a first group of display electrode pairs; applying, thereafter, a first supplemental pulse of a same polarity as that of the scan pulse to other display electrodes, each being the other display electrode of each display electrode pair in the first group of display electrode pairs, while applying a second supplemental pulse of a polarity opposite to that of the first supplemental pulse, to address electrodes; and applying, thereafter in the first address period before a second address period, a third supplemental pulse of a polarity opposite to that of the first supplemental pulse to the other display electrode of each display electrode pair in the first group of display electrode pairs.11-26-2009
20090262105LIGHT EMITTING DISPLAY, DISPLAY PANEL, AND DRIVING METHOD THEREOF - A light emitting display for compensating for the threshold voltage of transistor or mobility and fully charging a data line. A transistor and first through third switches are formed on a pixel circuit of an organic EL display. The transistor supplies a driving current for emitting an organic EL element (OLED). The first switch diode-connects the transistor. A first storage unit stores a first voltage corresponding to a threshold voltage of the transistor. A second switch transmits a data current in response to a select signal. A second storage unit stores a second voltage corresponding to the data current. A third switch transmits the driving current to the OLED. A third voltage determined by coupling of the first and second storage units is applied to a transistor to supply the driving current to the OLED.10-22-2009
20090295783IMAGE DISPLAY APPARATUS AND METHOD - A light source emits a light having a luminance. A light source luminance decision unit determines the luminance for a frame of the image based on pixel values of the frame. A conversion unit converts each pixel value of the frame in correspondence with the luminance. A light modulation unit displays the image by modulating a transmittance or a reflectance of the light based on each converted pixel value of the frame. A selection unit selects a timing to change the luminance in a display period of the frame by comparing the luminance for the frame with a luminance for a previous frame. A control unit changes the luminance of the light source to the luminance for the frame at the timing.12-03-2009
20090295780AMPLIFIER CIRCUIT AND DISPLAY DEVICE INCLUDING SAME - In one embodiment of the present application, during an initial setting period, switches are rendered conductive, so that voltage on a signal line becomes equal to a source voltage, and input voltages of inverters become equal to a logic threshold voltage. During a writing period, other switches are rendered conductive, and the inverters serve as amplifiers. The last-stage inverter is made up of a P-type Tr12-03-2009
20090295784APPARATUS AND METHOD FOR DRIVING LIQUID CRYSTAL DISPLAY DEVICE - An apparatus and method for driving a liquid crystal display device are disclosed. The apparatus includes a liquid crystal panel with pixels defined by data and gate lines. A gate driver provides different gate pulses to the odd-column pixels than to the even-column pixels. The gate pulses have different voltages and/or widths. Data drivers provide data voltages having a positive or negative polarity to the data lines. A timing controller controls the gate and data drivers and supplies gate clock pulses that have different voltages and/or widths to the gate driver.12-03-2009
20090295781DISPLAY APPARATUS - When an image signal suitable for performing automatic adjustment of an effective image area and a dot clock is not output, the adjustment may be unsuccessfully performed. An effective image area detector detects an effective image area and determines whether an image in the effective image area is a blank image. If a synchronization signal detector determines that there exists a synchronization signal and if the effective image area detector determines that the image is not a blank image, a controller adjusts an area captured as image data by an input signal processor.12-03-2009
20100201677METHOD FOR DRIVING ELECTROPHORETIC DISPLAY DEVICE, ELECTROPHORETIC DISPLAY DEVICE, AND ELECTRONIC DEVICE - A method for driving an electrophoretic display device, which includes a first electrode, a second electrode, and an electrophoretic element disposed between the first electrode and the second electrode, the method includes: setting a multiplication of a driving voltage and a voltage application time of the electrophoretic element in a unit period, which displays a first gradation with minimum reflectivity, and a multiplication of a driving voltage and a voltage application time of the electrophoretic element in the unit period, which displays a second gradation with maximum reflectivity, so as to be different from each other.08-12-2010
20130100112IMAGE PRIVACY PROTECTING METHOD - An image privacy protecting method is provided. Positions of a privacy protecting region and a normal display region are acknowledged first. When a frame of image is processed, a first image data will be displayed in the privacy protecting region is processed in a narrow viewing mode to obtain a narrow viewing driving data, and a second image data will be displayed in the normal display region is processed in a wide viewing mode to obtain a wide viewing driving data. Finally, display operations are performed in the privacy protecting region and the normal display region respectively according to the narrow viewing driving data and the wide viewing driving data.04-25-2013
20100277465PLASMA DISPLAY DEVICE AND PLASMA DISPLAY PANEL DRIVE METHOD - The wall charge is appropriately adjusted in the initializing period, and occurrence of an abnormal discharge and an unlit cell is suppressed in the address period. Therefore, a plasma display device has a plasma display panel having a plurality of discharge cells including a display electrode pair that is formed of a scan electrode and a sustain electrode, and a scan electrode driving circuit. The scan electrode driving circuit disposes a plurality of subfields having an initializing period, an address period, and a sustain period in one field, generates a decreasing down-ramp voltage in the initializing period, and generates a negative scan pulse voltage and applies it to the scan electrodes in the address period. In the initializing period, after the generation of the down-ramp voltage, the scan electrode driving circuit generates negative pulse voltage lower than the minimum voltage of the down-ramp voltage and applies it to the scan electrodes.11-04-2010
20100277462DISPLAY AND METHOD FOR ELIMINATING RESIDUAL IMAGE THEREOF - A display and a method for eliminating a residual image thereof are provided. The method includes detecting a status of an electric power supplied by a power supply unit of the display when the display is in the power on state; and coupling the electric power to a reference voltage when the electric power is suddenly terminated so as to accelerately discharge charges remaining on the electric power.11-04-2010
20110199368DISPLAY WITH CLK PHASE AUTO-ADJUSTING MECHANISM AND METHOD OF DRIVING SAME - One aspect of the present invention relates to a display for displaying data. In one embodiment, the display includes a timing controller (TCON) configured to provide a plurality of data signals to be displayed, at least one clock signal and a clock training code corresponding to the plurality of data signals; a plurality of source drivers, each source driver configured to receive one or more corresponding data signals, the at least one clock signal and the clock training code from the TCON, generate a plurality of clock signal according to the at least one clock signal, select one clock signal from the plurality of clock signals as an optimal clock signal according to the clock training code, and latch the one or more corresponding data signals according to the optimal clock signal; and a display panel configured to display the plurality of latched data received from the plurality of source drivers.08-18-2011
20110199369DISPLAY WITH CLK PHASE OR DATA PHASE AUTO-ADJUSTING MECHANISM AND METHOD OF DRIVING SAME - One aspect of the present invention relates to a display for displaying data. In one embodiment, the display includes a timing controller (TCON) configured to provide a plurality of data signals to be displayed, at least one clock signal and a data training code corresponding to at least one clock signal; a plurality of source drivers, each source driver configured to receive one or more corresponding data signals, the at least one clock signal and the data training code from the TCON, generate a plurality of data phase signals according to the one or more corresponding data signals, select one data signal from the plurality of data phase signals as an optimal data signal according to the data training code, and latch the one or more corresponding data signals according to the optimal data signal; and a display panel configured to display the plurality of latched data received from the plurality of source drivers.08-18-2011
20100103162Image display apparatus and method of driving the image display apparatus - The present invention retains a scanning line for power supply in a floating state in a pause provided halfway through a period of emission.04-29-2010
20100103161PLASMA DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A voltage of sustain electrodes (SU04-29-2010
20110267335LIQUID CRYSTAL DRIVING DEVICE AND DRIVING METHOD THEREOF - Disclosed is a liquid crystal driving device, which is without a gate PCB, having improved uniformity of screen, and a driving method thereof. The liquid crystal driving device comprises: a sequence recognition means for recognizing sequence of a pertinent gate driver IC by a pulse width of a vertical start signal inputted in synchronization with a vertical synchronous signal, and generating a Carry signal and location data of the pertinent gate driver IC; and gate-off voltage generation means for receiving a first gate-off voltage and the location data of the pertinent gate driver IC, and outputting a second gate-off voltage which is generated by subtracting a voltage attenuation quantity corresponding to the location data of the gate driver IC from the first gate-off voltage.11-03-2011
20110205221DISPLAY AND COMPENSATION CIRCUIT THEREFOR - A display includes a scan line, a data line, a pixel circuit, a compensation circuit, a voltage controller, and a data line driver. The data line forms a junction with the scan line. The pixel circuit is disposed at the junction of the scan line and the data line. When the scan line and the data line are driven, the pixel circuit generates a driving current. The compensation circuit generates a comparing signal and a positioning signal based on the driving current. The voltage controller generates a reference voltage that corresponds to the positioning signal with reference to the comparing signal. The data line driver corrects an image signal based on the reference voltage, and drives the data line with the corrected image signal. A compensation circuit for the display is also disclosed.08-25-2011
20100277464PLASMA DISPLAY DEVICE AND DRIVING METHOD THEREOF - A plasma display device includes: a plasma display panel having a first electrode and a second electrode crossing the first electrode; a first driver for driving the first electrode; and a second driver for driving the second electrode and including a first switch and a second switch coupled in series between a first voltage source and the second electrode. The first switch is configured to turn on while the second switch is configured to turn off to increase a voltage level of the second electrode during a first portion of a reset period. The first switch and the second switch are configured to both concurrently turn on to further increase the voltage level of the second electrode during a second portion of the reset period. A connection between the first switch and the second switch is coupled to a second voltage source for applying the connection with a second voltage.11-04-2010
20110205222METHOD FOR DRIVING LIQUID CRYSTAL DISPLAY DEVICE - A method for driving a liquid crystal display device is disclosed. The liquid crystal display device includes a plurality of scan lines, a plurality of data lines, and a plurality of pixel units. Each one of the pixel units is corresponding to one of the scan lines and one of the data lines. The method includes: turning on at least two of the scan lines at the same time, said at least two scan lines being separated from each other by at least one turned off scan line, and said at least two scan lines respectively coupled to distinct one or multiple of the data lines; and transmitting respective image data to the data lines which are coupled to said at least two scan lines. The present invention can solve problems of bad performance and errors in a display image.08-25-2011
20100265244PLASMA DISPLAY APPARATUS AND METHOD OF DRIVING THE SAME - A plasma display apparatus and a method of driving the same are disclosed. The plasma display apparatus includes a plasma display panel including a scan electrode and a sustain electrode that are positioned parallel to each other and a driver. The driver allows a change amount of a voltage difference between the scan electrode and the sustain electrode in a reset period of a subfield over time in a pattern hold mode in which a pattern of input video data remains in a previous pattern to be different from a change amount of a voltage difference between the scan electrode and the sustain electrode in a reset period of a subfield over time in a pattern change mode in which the pattern of the video data changes.10-21-2010
20120293485GATE SIGNAL ADJUSTMENT CIRCUIT - A gate signal adjustment circuit for a display is disclosed. The gate signal adjustment circuit can adjust a transition time of a gate signal used to drive data displaying. The adjustment can be to either speed up or slow down the transition time according to the requirements of the display. In an example, the gate signal adjustment circuit can include multiple transistors, where a first set of the transistors outputs the gate signal and a second set of the transistors outputs an adjustment to the gate signal. The second set of transistors can be the same or different sizes depending on the desirable number of adjustment options. The circuit can also include a control line coupled to the second set of transistors to control the adjustment output. Gate signal adjustment can reduce crosstalk in the display.11-22-2012
20100141639Source Driver and Display Device Having the Same - A source driver and a display device having the same are provided. The source driver shares several outputs by using a time division method and has an analog voltage stored in a buffer supplied to each data line multiple times during a horizontal scanning interval. Accordingly, by supplying an analog voltage to a data line a first time in a first activation interval and supplying an analog voltage to a data line a second time in a second activation interval, a target voltage of each pixel may be achieved quickly and accurately.06-10-2010
20110007065Display apparatus - There is a need for decreasing a variation in times for writing to TFT elements for pixels in a direction along the extension of a gate line in a liquid crystal display apparatus. A display apparatus includes a display panel having multiple gate lines and multiple drain lines arranged in a matrix and a data driver for outputting a display data signal to each drain line. The data driver includes: an internal control signal generation circuit for generating an internal control signal for setting a timing to output a data signal to a drain line of each block on a block basis by dividing the plurality of drain lines into multiple blocks; and a register circuit for recording a setting for division of the block, a setting for a delay direction and a delay width of a timing to output the data signal, and a setting for rising and falling of an internal control signal.01-13-2011
20110007062DISPLAY PANEL AND DRIVING METHOD THEREOF - A display panel and a driving method thereof are disclosed. The display panel comprises a plurality of pixel rows, a plurality of data lines and a plurality of gate lines. Each of the pixel rows includes pairs of first and second pixels adjacent to each other. The data lines are positioned between the first and the second pixels, respectively. The gate lines include first, second, third and fourth gate lines arranged in an alternating manner. The method comprises the following steps: turning on the gate lines in a sequence of first, second, fourth and third gate lines; and transmitting the data signal to the pixels through the data lines. The panel is applicable to an LCD panel and an LCD apparatus.01-13-2011
20090122053Display apparatus, driving method for display apparatus and electronic apparatus - A plurality of scanning periods are combined to form a composite period (2H). Within the first period of the front half, threshold value (Vth) correction is carried out all at once, and within the second period of the latter half, signal (Vsig) writing operation is carried out. High speed writing can be carried out even where the scanning period is shortened.05-14-2009
20090051678Active Matrix Display Apparatus - A readily-mountable low-cost active matrix display apparatus with a setup function is provided. A serial interface circuit 02-26-2009
20090128540LIQUID CRYSTAL DISPLAY DEVICE WITH DYNAMICALLY SWITCHING DRIVING METHOD TO REDUCE POWER CONSUMPTION - A liquid crystal display device of reducing power consumption includes a liquid crystal panel having a plurality of liquid crystal capacitors for displaying an image, an input interface for generating a scan control signal, an oscillator for generating a predetermined frequency, a control unit electrically coupled to the oscillator for outputting a current control signal when a frequency of the scan control signal is lower than the predetermined frequency, and a driving circuit electrically coupled to the controller for generating a first bias current to charge the plurality of liquid crystal capacitors of the liquid crystal panel.05-21-2009
20100141638LIQUID CRYSTAL DISPLAY - A liquid crystal display and a driving method thereof are provided. The liquid crystal includes a liquid crystal display panel, a data driving circuit, a gate driving circuit, a timing controller, and an over-driving controller. The over-driving controller, if a difference between input data input during a (N)th frame period (N is a positive integer) and (N−1)th frame data read from a memory is more than 2 gray levels, modulates the data at an over/under shoot ratio of 20 to 80% and supplies the modulated data to the timing controller, if the difference is less than 2 gray levels, differently supplies the input data to the timing controller and converts the least significant bit of the data stored in the memory according to whether or not the data is modulated.06-10-2010
20100141636EMBEDDING AND TRANSMITTING DATA SIGNALS FOR GENERATING A DISPLAY PANEL - Row propagation delay is the duration it takes for a signal to travel the length of a row in a flat panel display matrix. Row propagation delay compensation modifies when column voltages are applied to each column in a flat panel matrix by substantially matching the delay for its position relative to the length of the row. A ternary signal generated by the timing controller with embedded clock and data information is buffered at the timing controller and transmitted to each column driver as required to substantially match row propagation delay while minimizing system interconnects and column driver circuitry.06-10-2010
20090128541SHIFT REGISTER - A shift register comprises many stages, and each of stages comprises a first, a second and a third level control unit and a first and a second control unit is provided. The first and the second level control unit respectively provides a first clock signal and a voltage to an output terminal. The first driving unit and the level control unit are coupled to a first node. The first driving unit turns on and turns off the first level control unit in response to an input signal, a second control signal and a first control signal of the next stage. The second driving unit turns on and turns off the second level control unit in response to the first control signal. The third level control unit provides a first voltage to the output terminal in response to the second control signal and the first control signal.05-21-2009
20120068994DISPLAY DEVICE - A display device including a timing controller and a display panel is provided. The timing controller provides a clock signal and an inverted signal of the clock signal. The display panel includes a substrate, a pixel array and a plurality of shift registers. The pixel array is disposed on the substrate. The shift registers are disposed on the substrate and respectively coupled to the timing controller. The shift registers sequentially output a plurality of scanning signals to drive the pixel array according to the clock signal and the inverted signal. In a display period of a frame period, frequencies of the clock signal and the inverted signal are a first frequency. In a vertical blanking period of the frame period, frequencies of the clock signal and the inverted signal are a second frequency. The second frequency is smaller than the first frequency.03-22-2012
20120068993TECHNIQUES FOR CHANGING IMAGE DISPLAY PROPERTIES - Techniques are described that can be used to adjust a refresh rate of a display device. For example, the refresh rate change can be triggered by a user application for a variety of circumstances such as a change in power source from AC to DC or display of 24 frames per second (fps) video. Contents of a primary buffer can be copied to a secondary buffer and a display engine can read video from the secondary buffer to provide video to a display. The clock rate of a clock used to read out pixels can be adjusted using software commands. Video is written to a third buffer and during a vertical blanking interval the display engine reads frames from the third buffer instead of the second buffer.03-22-2012
20090141016LCD DRIVING APPARATUS AND METHOD - The invention discloses a driving apparatus for driving an LCD. The driving apparatus comprises a voltage control unit, an operating unit, a resistance unit, and a voltage selection unit. The operating unit comprises two sets of buffers formed by a plurality of operational amplifiers in negative feedback circuit. The two sets of buffers selectively receive positive polarity voltages and negative polarity voltages respectively. The voltage selection unit is provided with the positive polarity voltages and negative polarity voltages through the operating unit and the resistance unit. The voltage selection unit selectively provides the pixels of the LCD with the positive polarity voltage and the negative polarity voltage. Accordingly, each of the pixels is provided either with the positive polarity voltages or the negative polarity voltages by one of the two sets of buffers.06-04-2009
20110221739PIXEL CLOCK GENERATING DEVICE AND IMAGE FORMING APPARATUS - A pixel clock generating device includes a time interval detection unit detecting a time interval between a first signal and a second signal in each of cyclically repeating N (≧2) time periods; a comparing unit cyclically selecting a target value from N target values corresponding to the N time periods and outputting an error indicating a difference between the detected time interval and the selected target value for each of the N time periods; a frequency calculation unit correcting a frequency of the pixel clock signal based on the error and cyclically generating a frequency specification signal indicating the corrected frequency for each of the N time periods; a high-frequency clock generating unit generating a high-frequency clock signal; and a pixel clock generating unit generating a pixel clock signal based on the frequency specification signal and the high-frequency clock signal.09-15-2011
20100156880ELECTRO-LUMINESCENCE DISPLAY DEVICE AND DRIVING METHOD THEREOF - An electro-luminescence display device includes an electro-luminescence panel having a plurality of pixels at pixel areas defined by intersections between data lines and gate lines, each of the pixels including: an electro-luminescence cell connected to receive a supply voltage, a driving thin film transistor controlling a current amount flowing through the electro-luminescence cell, and a bias switch connected to a gate terminal of the driving thin film transistor, the bias switch selectively applying an inverse voltage to the driving thin film transistor.06-24-2010
20090096776Device for controlling output of light source unit in single panel display system - The present invention relates generally to a device for controlling the output of a light source unit in a single panel display system. More particularly, the present invention relates to a device for controlling the output of a light source unit in a single panel display system, which adjusts the time of application of light source driving voltage based on the output characteristics of each light source, and adjusts video data for the light source based on the adjusted time, thereby preventing a garbage image from being generated.04-16-2009
20090096775Differential signal interfacing device and related method - The present invention provides a differential signal interfacing device, including a reduced swing differential signaling (RSDS) transmitter and a plurality of RSDS receivers, in order to improve RSDS signal capacity. The RSDS transmitter is coupled to the plurality of RSDS receivers via a bus and transmits a RSDS signal in a discontinuous manner. The plurality of RSDS receivers receives the RSDS signal for signals of different types.04-16-2009
20090231323TIMING CONTROLLER AND METHOD FOR REDUCING LIQUID CRYSTAL DISPLAY OPERATING CURRENT - Provided are a timing controller, a liquid crystal display (LCD) driver including the same, and a method of outputting display data, where the timing controller receives a vertical synchronous signal and a data enable signal, generates an internal data enable signal having a period that is longer than the period of the data enable signal in response to the vertical synchronous signal and the data enable signal, and updates a memory using the internal data enable signal; where the LCD driver including the timing controller outputs display data stored in a memory device based on the internal data enable signal; where a data line driving circuit drives data lines based on the output display data; and where the method of outputting display data is performed by the LCD driver.09-17-2009
20090102828Projection apparatus with adjustable light source - A projection apparatus includes a light source for emitting a light including at least two different wavelengths; a light source control circuit for controlling a light source to emit the light as pulse emissions with a pulse modulation control; at least two spatial light modulators each comprises plurality of pixel elements are arranged in an array; a spatial light modulator control circuit for selectively controlling a modulation state of the respective pixel elements in each of the spatial light modulators in accordance with image data corresponding to the respective pixel elements; and the light source control circuit controls the light source so that a starting time of a pulse emission period of the pulse emissions of at least one of the wavelengths emitted from the light source is different from a modulation control timing of the pixel element of the spatial light modulator.04-23-2009
20090244052Display Device and Method of Controlling the Same - A liquid crystal display panel (LCD) 10-01-2009
20090244053Method for driving plasma display panel and plasma display apparatus - An object of the present invention is to provide a method for driving a plasma display panel capable of further reducing an address error to realize satisfactory image quality, and a plasma display apparatus.10-01-2009
20090315876INFORMATION PROCESSING DEVICE AND INFORMATION PROCESSING METHOD, AND STORAGE MEDIUM - An information processing device includes an input section configured to input a plurality of types of video signals; and a timing controller configured to perform, separately for each of split regions that are obtained by splitting a display region of a display device, control of timing at which a corresponding one of videos corresponding to the plurality of types of video signals is displayed in the split region.12-24-2009
20090251454DISPLAY - A timing controller for a display, video, audio, or other device generates and transmits a transmission signal including a strobe signal inserted between data signals including image data and a clock signal inserted following the strobe signal, the strobe signal having a different magnitude from a magnitude of the data signal, and the clock signal having an equal magnitude to the magnitude of the data signal. A column driving circuit receives the transmission signal, extracting the strobe signal from the transmission signal, recovering the clock signal using the extracted strobe signal, and sampling the data signal included in the transmission signal in response to the recovered clock signal. The probability of generating a timing skew error in the time interval between a clock signal and a data signal is minimized. Even though the level of a common component might change, the clock signal can be recovered accurately and the size of the clock recovery circuit can be reduced. Further, the data reception apparatus is suitable for transmitting/receiving data at a high transmission rate, and is robust against noise generated during transmission of the data signal and the clock signal, or against noise generated along a common path. Since the strobe signal can carry data, data transmission efficiency can be increased.10-08-2009
20100149169ELECTROPHORETIC DEVICE, ELECTRONIC APPARATUS, AND METHOD FOR DRIVING THE ELECTROPHORETIC DEVICE - A method for driving an electrophoretic device that includes an electrophoretic element between a common electrode and a pixel electrode, the electrophoretic element including electrophoretic particles, the method including applying voltages on the common electrode and the pixel electrode, thereby conducting an image rewrite process, wherein the image rewrite process includes a first reset period process, during which a voltage-equivalent of a first gradation, which has a higher level of brightness than an intermediate gradation, is applied between the common electrode and the pixel electrode, thereby causing electrophoretic particles to migrate; and a second reset period process, during which a voltage-equivalent of a third gradation which is between a second gradation and the first gradation is applied between the common electrode and the pixel electrode, the second gradation being at a lower level of brightness than the intermediate gradation, thereby causing the electrophoretic particles to migrate.06-17-2010
20100171738Driving method of organic electroluminescence emission part - A driving method of a display device having a driving transistor and a display element, one source/drain region of the driving transistor connected to a power supply part, the other source/drain region connected to an anode electrode provided in the display element, the method includes the steps of: setting a potential of the anode electrode by applying a predetermined intermediate voltage to the anode electrode so that a potential difference between the anode electrode of the display element and a cathode electrode at the other end of the display element does not exceed a threshold voltage of the display element; and then holding the driving transistor in OFF-state while a drive voltage is applied from the power supply part to one source/drain region of the driving transistor.07-08-2010
20100013821DISPLAY DEVICE, METHOD FOR DRIVING THE SAME, AND ELECTRONIC DEVICE - A display device includes: a display unit including first and second lines, light emitting elements and pixel circuits; a first drive unit sequentially applying a selection pulse to the first lines; and a second drive unit applying a signal pulse including first to third voltages to each of the second lines. Each of the pixel circuits includes a first transistor sampling the signal pulse, and a second transistor driving one of the light emitting elements. The first drive unit applies the selection pulse when the first voltage is being applied by the second drive unit, before a correction of a threshold voltage of the second transistor is initiated and within a period that the one of the light emitting elements is being turned out, and the first drive unit applies the selection pulse when the second voltage is being applied by the second drive unit.01-21-2010
20090315874Pixel and organic light emitting display device using the same - Disclosed is a pixel structure capable of reducing the rate of defective pixels. The pixel includes a plurality of organic light emitting diodes, and a plurality of light emitting control transistors respectively coupled to a plurality of the organic light emitting diodes. The light emitting control transistors are turned on at different times to supply an electric current to each of the organic light emitting diodes at different times.12-24-2009
20090122052Overdrive apparatus for advancing the response time of a liquid crystal display - An overdrive apparatus for advancing the response time of a liquid crystal display (LCD) is disclosed, comprising a overdrive table, a memory storage, and a determining device, wherein the overdrive table is used for saving a plurality of overdrive-voltage values, the memory storage is used for saving a first frame, the determining device receives a first pixel, which is corresponding with a second pixel of the first frame, wherein the determining device can select an overdrive-voltage value from the overdrive table according to the first pixel and the second pixel, wherein the memory storage is provided within a first chipset, which comprises a first active face and a plurality of first bond pads provided on the first active face; the determining device is provided within a second chipset, which comprises a second active face and a plurality of second bond pads provided on the second active face, wherein the first chipset and the second chipset are stacked with each other, and the second bond pads are electrically connected to the first bond pads.05-14-2009
20100156881IMAGE DISPLAY DEVICE - An image display device includes a plurality of pixels. Each of the plurality of pixels includes a self light-emitting element and a driving transistor configured to drive the self light-emitting element based on an inputted image voltage. The image display device also includes a current source configured to supply a constant current to the driving transistor and a detection section connected to a source electrode of a driving transistor of each of the plurality of pixels. The current source is connected to the source electrode of the driving transistor. The detection section detects a source voltage of the driving transistor to which the constant current is supplied during a detection period.06-24-2010
20100265245METHOD OF DRIVING AN ELECTROPHORETIC DISPLAY - An electrophoretic display device includes M×N numbers (M, and N are integers more than two) of pixels. The M×N numbers of pixels include M numbers of pixel groups having N numbers of pixels. Further, an image on the electrophoretic display device is displayed by making some of the M×N numbers of pixels switched at least from a bright display to a dark display, and vice versa. A period for displaying one piece of an image on the electrophoretic display is defined as period for forming an image and a period for introducing an image signal to each of the M×N numbers of pixels with sequentially selecting each of the pixels is defined as a frame period. Then, the time for forming an image includes a plurality of frame periods (a numbers of L: L is integers more than two.)10-21-2010
20100156879LIQUID CRYSTAL DISPLAY AND METHOD OF DRIVING THE SAME - A liquid crystal display and a method of driving the same are provided. The liquid crystal display includes a first source drive IC group outputting a first feedback lock signal in response to one of a power voltage input through a first lock signal input terminal and a lock signal from the timing controller, a second source drive IC group outputting a second feedback lock signal in response to one of the power voltage input through a second lock signal input terminal, the lock signal from the timing controller, and a lock signal transferred from the first source drive IC group, and a comparator that compares the first feedback lock signal with the second feedback lock signal and supplies a comparison result to the timing controller.06-24-2010
20100156882Data driving circuit, display apparatus, and data driving method - Provided are a data driving circuit, a display device, and a data driving method. The data driving circuit includes a clock generator configured to generate a clock signal from clock information included in a reception signal including the clock information, mode information and a body, a sampler configured to sample the reception signal according to the clock signal to obtain the mode information and the body that includes at least one of control information and data, a signal controller configured to determine whether or not the body corresponds to the control information with reference to the mode information, and generate a control signal corresponding to the control information according to a result of the determination, and a data driver configured to generate a data signal corresponding to the data according to the control signal.06-24-2010
20110175897PIXEL STRUCTURE, DISPLAY PANEL, DISPLAY AND DRIVING METHOD THEREOF - A pixel structure, a display panel, a display and a driving method thereof are disclosed. The pixel structure comprises an organic light emitting diode, a driving transistor, a storage capacitance, and a switch transistor. A first terminal of the driving transistor receives an image retention cancellation signal. The image retention cancellation signal changes to a second level from a first level before the driving transistor drives the organic light emitting diode so that the driving transistor is operated in a forward curve. A second terminal of the driving transistor is coupled to the light emitting diode. One terminal of the storage capacitance receives a common voltage, and the other terminal of the storage capacitance is coupled to a control terminal of the driving transistor. The switch transistor is controlled by a scan signal to output a data signal to the control terminal of the driving transistor.07-21-2011
20090079725DISPLAY DEVICE AND METHOD FOR DRIVING THE SAME - A display device includes: a drive circuit supplying a first signal voltage and a first reverse bias in a first frame time period, and supplying a second signal voltage and a second reverse bias in a second frame time period subsequent to the first frame time period; a first drive TFT receiving the first signal voltage to supply a first drive current based on the first signal voltage in the first frame time period, and receiving the second reverse bias in the second frame time period; a second drive TFT receiving the first reverse bias in the first frame time period, and receiving the second signal voltage to supply a second drive current based on the second signal voltage in the second frame time period; and a display element emitting light based on the first drive current in the first frame time period and emitting light based on the second drive current in the second frame time period.03-26-2009
20100013820METHOD OF DRIVING PLASMA DISPLAY PANEL AND PLASMA DISPLAY APPARATUS USING THE METHOD - A method of driving a plasma display device, having a time-divisionally driven gray scale utilizing a reset period in which wall charges of all cells of a plasma display panel (PDP) are initialized, an address period for enabling a sustain discharge by generating a weak discharge in selected cells, and a sustain period in which the sustain discharge is generated in the selected cells. Further, an erase discharge is generated in all the cells of the PDP early in the sustain period.01-21-2010
20100013819PLASMA DISPLAY PANEL APPARATUS DRIVING METHOD AND PLASMA DISPLAY PANEL APPARATUS - In a former half (T01-21-2010
20100259533DISPLAY AND A METHOD OF DRIVING THE SAME - A display includes: a pixel circuit array section including a plurality of light-emitting elements and a plurality of pixel circuits; a scanning line drive circuit sequentially selecting the plurality of light-emitting elements and the plurality of the pixel circuits; a signal line drive circuit writing a light emission potential corresponding to a signal potential to a selected pixel circuit; and a control circuit, in which in each frame period, the control circuit outputs a light-off control signal at a lapse of a first period after writing the light emission potential to the selected pixel circuit by the signal line drive circuit, and then the control circuit outputs a light-on control signal at a lapse of a second period, and after that, the control circuit outputs a light-off control signal at a lapse of a third period which is longer than the first period.10-14-2010
20100259532Display device and display driving method - Disclosed herein is a display device including: a pixel array configured to include pixel circuits that are arranged in a matrix and each have at least a light emitting element, a switching transistor for inputting a signal value supplied to a signal line, and a drive transistor for current application to the light emitting element dependent on the input signal value; a signal value output unit configured to output signal values given to the pixel circuits in the pixel array to the signal lines disposed on the pixel array; and a write controller configured to give, to the pixel circuits on a line-by-line basis, scan pulses for carrying out conduction control of the switching transistor and inputting the signal value on the signal line to the pixel circuit, and allow the scan pulses given to lines to each have a pulse waveform set depending on mobility of the drive transistors in a corresponding one of the lines of the pixel array.10-14-2010
20100188393PIXEL DRIVING APPARATUS AND PIXEL DRIVING METHOD - In a pixel driving apparatus and a pixel driving method in which one frame period is time divided to a plurality of subframe periods, and gradation expression is performed by the sum of the turned-on periods of one or a plurality of subframe periods, occurrence of noise caused by the gradation expression is suppressed without increasing the number of subframes.07-29-2010
20100188394PLASMA DISPLAY PANEL - A plasma display panel is provided. The plasma display panel includes a front substrate, a display electrode on the front substrate, the display electrode including first and second display electrodes adjacent to each other, a rear substrate opposite the front substrate, a barrier rib between the adjacent first and second display electrodes, a black layer opposite the barrier rib, the black layer being positioned substantially parallel to the first and second display electrodes on the front substrate, and an auxiliary electrode on at least one black layer. A shortest distance g07-29-2010
20100259534PLASMA DISPLAY DEVICE - A plasma display device has a plasma display panel and a panel driving circuit for driving the panel. The panel driving circuit drives the panel in a manner that a period for causing an address discharge in all discharge cells is disposed in the address period, or before the address period of a subfield, and the subfield (first SF) is interposed at predetermined time intervals.10-14-2010
20100177087SHIFT REGISTER AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - A shift register is disclosed. The shift register has a plurality of stages dependently coupled to an input line of a start pulse and is driven by first, second and third clock signals respectively input to first, second and third input lines. The shift register includes a voltage controller to prevent leakage currents.07-15-2010
20100225637DISPLAY DRIVING SYSTEM WITH MONITORING UNIT FOR DATA DRIVER - A display driving system includes a timing controller configured to receive a data signal composed of image data and generate a control signal such as a clock signal; an interface configured to transmit the data signal and the control signal to a plurality of data drivers; the data drivers configured to receive the data signal and the control signal through the interface and supply received signals to a display panel to display an image; and a monitoring unit configured to feed back LOCK signals indicative of state information of the data drivers to the timing controller such that the data drivers can be monitored.09-09-2010
20100225635DRIVING CIRCUIT, DISPLAY DEVICE, AND TELEVISION SYSTEM - In one embodiment of the present invention, a liquid crystal driving semiconductor IC for driving a display panel includes an output terminal connected to the display panel, an output circuit block including a DAC circuit, and a spare output block including a DAC circuit, the DAC circuits and being connectable to the output terminal. The IC includes an op amp for comparing output signal from the DAC circuit with that of the DAC circuit, and judging circuit for judging, based on the comparison result of the op amp, whether the DAC circuit is defective, and switches and for, if the DAC circuit is defective, connecting the spare DAC circuit to the output terminal in replacement of the defective DAC circuit. This provides an IC for driving a display device, which IC has concrete measures to easily detect a defect in an output circuit, and can perform self-healing for the defect in the output circuit.09-09-2010
20100225636DISPLAY DEVICE AND DISPLAY METHOD THEREOF - This present disclosure provides a display device and method thereof. The display method used in a display device, the display device includes a display unit, a clock unit, a storage unit and an analog clock implementation module, the clock unit configured to provide current real time, and the storage unit configured to store display contents and display modes of an analog clock. The method includes determining positions of clock markings using the analog clock implementation module for the analog clock around the display unit; acquiring the display mode of the analog clock; displaying the current time in the analog clock, acquiring and displaying display contents together with the analog clock in the display mode.09-09-2010
20100238156DISPLAY DEVICE AND METHOD FOR DRIVING DISPLAY DEVICE - A display device, in at least one embodiment, includes: a gate driver including a plurality of shift register stages each provided so as to correspond to each row, the gate driver outputting a gate signal for turning on switching elements in the each row; and a source driver outputting a data signal in accordance with an image to be displayed. For a row (first row) located at an outermost position from which scanning by use of the gate signal starts, a dummy line is provided. The dummy line is driven by a gate start pulse inputted into a shift register in the first row.09-23-2010
20100141641SHIFT REGISTER - In one embodiment of the present invention, a unit circuit of a shift register includes a bootstrap circuit configured with a transistor T06-10-2010
20080291194DATA TRANSMISSION METHOD APPLIED IN ASYNCHRONOUS DISPLAY AND RELATED ELECTRONIC SYSTEM - An electronic system including a display device, a microcontroller unit (MCU), and a display driver is disclosed. The MCU controls the operations of the electronic system. The display driver drives the display device according to the control of the MCU. The MCU and the display driver are interconnected by a mode selection line, a reference clock line, and a data transmission line set. The MCU informs the display driver of a current transmission mode through the mode selection line and transmits a reference clock to the display driver through the reference clock line. The MCU and the display driver synchronize data transmitted through the data transmission line set according to the reference clock.11-27-2008
20110057926SHIFT REGISTER UNIT AND GATE DRIVE DEVICE FOR LIQUID CRYSTAL DISPLAY - A shift register unit and a gate drive device for a liquid crystal display are disclosed. Both gate and drain of the tenth thin film transistor are connected to the source of the fifth thin film transistor, a source thereof is connected to a low voltage signal input terminal, threshold voltages of the eighth thin film transistor and the ninth thin film transistor are equal to or less than threshold voltage of the tenth thin film transistor. The shift register unit and the gate drive device for liquid crystal display provided in the present invention, could enable the thin film transistor used to suppress the noise in the shift register unit to maintain turning on, therefore it guarantees the reliability of the shift register unit.03-10-2011
20100141642SHIFT REGISTER - In one embodiment of the present invention, a unit circuit of a shift register includes a bootstrap circuit configured with a transistor T06-10-2010
20100141640DISPLAY DEVICE AND AGING METHOD - The display device according to the present invention is provided with a thin film transistor (first transistor) for aging which directly connects an organic EL element to a power supply line, and furthermore, an aging control line and a thin film transistor (second transistor) for switching aging control signals are provided in order to control the thin film transistor for aging, and thus the aging period is shorter.06-10-2010
20100128021PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - The present invention provides a pixel comprising: organic light emitting diodes emitting corresponding to the amount of a driving current; a first transistor whose first electrode is coupled to a first power supply, second electrode is coupled to the organic light emitting diodes, and gate is coupled to a first node, the first transistor forming the driving current corresponding to a voltage of the first node; a second transistor transferring data signals to the first node corresponding to a first scan signal; a third transistor applying a negative voltage to the first node corresponding to a third scan signal; and a capacitor maintaining the voltage of the first node, and an organic light emitting display device using the same.05-27-2010
20100033472DATA DRIVING METHOD FOR DRIVING DISPLAY PANEL, DATA DRIVING CIRCUIT FOR PERFORMING THE SAME, AND DISPLAY APPARATUS HAVING THE DATA DRIVING CIRCUIT - In a data driving method for driving a display panel, a data driving circuit, and a display apparatus, the data driving method includes receiving a digital driving voltage and an analog driving voltage. The analog driving voltage is switched, after the digital driving voltage is received and a specific driving time elapses. A digital data signal is converted to an analog data signal using the analog driving voltage. The analog data signal is output to a data line of the display panel.02-11-2010
20100039423SCAN DRIVER AND ORGANIC LIGHT EMITTING DISPLAY USING THE SAME - An organic light emitting display generates scan signals with a scan driver that includes a plurality of stages. A first stage among the plurality of stages includes a first signal processor receiving a start pulse and a second clock to generate a first output signal, a second signal processor receiving the start pulse and a first clock to generate a second output signal, a third signal processor receiving the first output signal, the second output signal, and a third clock to generate a first scan signal, and a fourth signal processor receiving the first output signal, the second output signal, and a fourth clock to generate a second scan signal.02-18-2010
20100220092Semiconductor Device and Driving Method Thereof, and Electronic Device - A driving method of a semiconductor device for compensating variation in threshold voltage and mobility of a transistor is provided. A driving method of a semiconductor device including a transistor and a capacitor electrically connected to a gate of the transistor includes a first period where voltage corresponding to threshold voltage of the transistor is held in the capacitor, a second period where a total voltage of video signal voltage and threshold voltage is held in the capacitor holding the threshold voltage, and a third period where charge held in the capacitor in accordance with the total voltage of the video signal voltage and the threshold voltage in the second period is discharged through the transistor.09-02-2010
20100220093ORGANIC LIGHT EMITTING DISPLAY - An organic light emitting display includes pixels positioned at crossing regions of scan lines, emission control lines, and data lines. Each of the pixels positioned on an ith horizontal line includes an organic light emitting diode (OLED), a first transistor coupled between a corresponding one of power source lines and an anode electrode of the OLED for controlling current supplied to the OLED, a second transistor turned on when a scan signal is supplied to an ith scan line for supplying the data signal from a corresponding one of the data lines to a gate electrode of the first transistor, a third transistor coupled between the first transistor and the corresponding one of the power source lines and having a gate electrode coupled to an ith emission control line, and a storage capacitor coupled between the gate electrode of the first transistor and the anode electrode of the OLED.09-02-2010
20130127820DRIVING CIRCUIT FOR LIGHT EMITTING ELEMENT, AND LIGHT EMITTING DEVICE - A driving circuit that switches a light emitting element between an ON state and an OFF state in synchronization with an input signal is provided. The circuit includes a driving current supply unit that has a control terminal and supplies the light emitting element with a driving current whose value changes with dependency on the potential of the control terminal; a control unit that changes the potential of the control terminal in synchronization with the input signal; and a supplementary current supply unit that supplies the control terminal with a supplementary current that promotes change in the potential of the control terminal. The supplementary current supply unit has a capacitor, a voltage that is applied to the capacitor changes in synchronization with the input signal, and the supplementary current is generated by change in the voltage of the capacitor.05-23-2013
20100220094SCAN SIGNAL LINE DRIVER CIRCUIT AND DISPLAY DEVICE - In one embodiment of the present invention, in order to achieve a scan signal line driver circuit that is highly resistant to noise that causes a change in level toward High and therefore unlikely to suffer from a display problem, a gate driver of the present invention that is provided in a TFT liquid crystal panel includes a shift register having D-FFs connected in cascade, and signals are outputted through the respective data output terminals of the D-FFs. Because the D-FFs have their respective data output terminals connected to pull-down resistors, a change in level of the signals from the respective data output terminals of the D-FFs can be prevented even when noise that causes a change in level toward High is received. This makes it possible to prevent the occurrence of such a display problem that a gate line that is not supposed to carry out a display is accidentally turned on by noise that causes a change in level toward High.09-02-2010
20090040211Method for driving plasma display panel - A method for driving an AC type plasma display panel includes the steps of performing initialization at least once for each frame so as to clear binary setting of wall charge quantity in a screen by discharge except for micro discharge in which electrodes covered with a plurality of fluorescent materials become cathodes, and performing special initialization at frequency of once for M frames, where M=two or more, so as to erase unnecessary wall charge in the screen by discharge in which electrodes become cathodes and that is stronger than the discharge in the initialization.02-12-2009
20090073159OVERDRIVE METHOD FOR ANTI-DOUBLE EDGE OF LCD - An overdrive method for anti-double edge of LCD uses: a register unit, a signal processing module including a selection unit and a driving-voltage lookup table (ADE LUT) and a plurality of multiplex processing units to effectively save the resources of hardware and to eliminate the double edge phenomenon generated during overdrive liquid-crystal image developing by selecting among present frame driving-voltage values, overdrive voltage values and actually achieved voltage values input from the driving-voltage lookup table and by outputting driving-voltage values suitable for respective situations according to selection signals of a selection unit by the multiplex processing units. The method is added with a complementary table and an operation unit to increase its scope of application, to eliminate double edge generated by different response speeds; and thereby is suitable for various liquid crystal displays.03-19-2009
20090315875Display apparatus and method - Image processing and corresponding apparatus, methods and systems. The image processing includes controlling n number of data-line driver circuits included in a display apparatus, the data-line driver circuit driving n number of subpixels. Such controlling causes to display a moving picture image such that frame information of the moving picture image with first frame rate is displayed at a second frame rate, which is 1/n of the first frame rate, and the n number of subpixels included in each pixel are sequentially driven with a time shift, the time shift being 1/n of display period of single frame with the second frame rate.12-24-2009
20100134474SCAN SIGNAL LINE DRIVER CIRCUIT, DISPLAY DEVICE, AND METHOD OF DRIVING SCAN SIGNAL LINES - A gate driver of on embodiment of the present invention includes: a scan signal output circuit for performing alternately scanning whereby either odd-numbered scan signal lines or even-numbered scan signal lines are sequentially driven and scanning whereby the remaining scan signal lines are sequentially driven; a rise counter circuit for sensing the rise count for a clock signal in a HIGH level period of an externally supplied start signal; a scan sequence setup circuit for setting up a scan sequence to be followed by the scan signal output circuit according to the rise count; and a start signal generating circuit for generating a start signal to be supplied to a next scan signal line driver circuit. Hence, the resultant scan signal line driver circuit and method of driving a display device is capable of producing high quality images at low cost while restricting power consumption and heat generation by a data signal line driver circuit.06-03-2010
20100309191SHIFT REGISTER AND A LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME - A shift register of an LCD device operates based on two clock signals and maintains the gate voltage of an output transistor switch using two pull-down transistor switches. The gate voltages of the pull-down transistor switches are switched periodically between the high and low level of the clock signals. During the output period, the transistor switches have negative gate-source voltages so as to reduce leakage.12-09-2010
20110122123Gate Driving Circuit of Liquid Crystal Display - A gate driving circuit includes several driving circuit units and several switch units. Each driving circuit unit outputs several driving signals to several scan lines sequentially. One of the switch units is respectively disposed between two adjacent driving circuit units and conducts or blocks a first and a second clock signal transmitted to driving circuit units.05-26-2011
20110122122SOURCE DRIVER AND OPERATION METHOD THEREOF AND FLAT PANEL DISPLAY - A source driver, an operation method thereof, and a flat panel display using the same are provided. The source driver includes a data channel, a switch and a switch controller. The data channel latches a pixel data according to timing of a line letch signal, and converts the latched pixel data to a driving signal for driving a display panel. The data channel decides a polarity of the driving signal according to a polarity signal. A first end of the switch is coupled to the data channel to receive the driving signal. The switch controller adjusts a pulse width of the line letch signal to obtain a control signal for controlling the switch according to the polarity signal. A pulse width of a first pulse is smaller than that of a second pulse in the control signal after the polarity signal is changed.05-26-2011
20110115782LIQUID CRYSTAL DISPLAY - A liquid crystal display includes: a liquid crystal capacitor; a first switching element which transmits a data voltage to the liquid crystal capacitor; a second switching element connected to the liquid crystal capacitor; and a transformation capacitor connected to the second switching element. A difference between a first time when the first switching element is turned on and a second time when the second switching element starts is turned on is greater than 1 horizontal period and less than 1 frame period.05-19-2011
20090244054DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A display device and a method of driving the display device are provided. The display device includes a scan driver for transmitting scan signals to a plurality of scan lines, a data driver for transmitting data signals to a plurality of data lines, and a signal controller for controlling the transmissions of the scan driver and the data driver. The scan driver and the data driver are configured to begin operating in response to a reset signal. The signal controller is configured to detect the reset signal, to determine whether the detected reset signal is a normal reset signal or an abnormal reset signal applied after an on time at which power is supplied to the scan driver and the data driver, and to apply a normal reset signal when the detected reset signal is determined to be an abnormal reset signal.10-01-2009
20110001747THIN FILM TRANSISTOR CIRCUIT, LIGHT EMITTING DISPLAY APPARATUS, AND DRIVING METHOD THEREOF - In order to suppress an influence of an electrical stress on a TFT characteristic in use of a TFT, a light emitting display apparatus according to the present invention comprises organic EL devices and driving circuits for driving the organic EL devices. The driving circuit includes plural pixels each having a thin film transistor of which a threshold voltage reversibly changes due to the electrical stress applied between a gate terminal and a source terminal, and a voltage applying unit which sets gate potential of the thin film transistor higher than source potential. The voltage applying unit applies the electrical stress between the gate terminal and the source terminal at a time when the thin film transistor is not driven, so as to drive the thin film transistor in a region that the threshold voltage is saturated to the electrical stress.01-06-2011
20110001746Apparatuses for and methods of displaying three-dimensional images - An apparatus for displaying a three-dimensional (3D) image may include a plurality of display panels and a controller configured to apply image signals to each of the plurality of display panels. At least one of the display panels may include a transparent display panel. The plurality of display panels may be spaced apart from each other in a depth direction. A method of displaying a three-dimensional (3D) image may include displaying plane images on each of a plurality of display panels. At least one of the plurality of display panels may include a transparent display panel. The plurality of display panels may be spaced apart from each other in a depth direction.01-06-2011
20110025679DISPLAY DEVICE - A display device includes a light emission driver realized by using PMOS transistors, thereby controlling a light emitting time. The display device includes: a display unit including a plurality of scan lines for transmitting a plurality of scan signals, a plurality of data lines for transmitting a plurality of data signals, a plurality of light emitting signal lines for transmitting a plurality of light emitting signals, and a plurality of pixels coupled to the scan lines and the data lines and for emitting light according to the light emitting signals; and a light emission driver for transmitting the light emitting signals to the light emitting signal lines and for controlling a pulse width of the light emitting signals.02-03-2011
20090066686Organic Light Emitting Display and Method of Driving the Same - An organic light emitting display and a method of driving the same, in which a driving frequency is lowered and at the same time a production cost is reduced. The organic light emitting display includes: a display region divided into a left part and a right part; a first data driver adapted to supply a data signal to data lines of the left part; a second data driver adapted to supply the data signal to data lines of the right part; and first and second memory groups wherein, when one of the first and second memory groups stores data to be supplied to the left and right parts therein, another one of the first and second memory groups supplies data to the first and second drivers, and wherein, when one of the first and second memory groups receives a reading signal in parallel, another one of the first and second memory groups receives a writing signal in series. With this configuration, the frequency of a clock included in a reading signal supplied to a line memory is lowered, thereby reducing a production cost.03-12-2009
20110025678ORGANIC LIGHT EMITTING DISPLAY DEVICE AND DRIVING METHOD THEREOF - An organic light emitting display device is disclosed. The device includes a data driver for supplying a plurality of data signals and a reset voltage to each output line during every horizontal period. The data driver is configured to selectively supply the reset signal and the reset voltage based on a comparison of the data signal input to each data line during a current horizontal period with the data signal input to the data lines during the previous horizontal period.02-03-2011
20100156883Power source apparatus for display and image display apparatus - A power source apparatus for a display is provided, which comprises a voltage generating section capable of controlling outputting or output termination of one or more predetermined output voltages, and a switching section provided between an output terminal of the predetermined output voltage and a predetermined reference potential terminal. The switch section is turned from OFF to ON when the voltage generating section performs the output termination control.06-24-2010
20110043514METHOD AND APPARATUS FOR MULTIPLE DISPLAY SYNCHRONIZATION - A circuit includes a plurality of display path circuits and a timing and frame synchronization circuit. The timing and frame synchronization circuit aligns a first blanking interval of first timing information provided by a first of the display path circuits for a first display based on a second blanking interval of second timing information provided by a second of the display path circuits for a second display.02-24-2011
20110115781Display driver integrated circuits, and systems and methods using display driver integrated circuits - Example embodiments include display driver systems having a host with an external image signal receiving unit configured to receive an external image signal and a graphic control unit configured to transmit input control signals. The systems further include a display driver integrated circuit configured to receive the input control signals, generate a screen display sync signal by using a main clock signal when the external image signal includes a moving image, and generate a screen display sync signal by using an internal clock signal when the external image signal includes a still image, the display driver integrated circuit including. Such circuits have a display driver integrated circuit control unit configured to generate a data control signal, a gradation voltage generating unit configured to generate a gradation voltage and transmit the gradation voltage, and a data driver configured to receive the gradation voltage from the gradation voltage generating unit and apply the gradation voltage to data display signal lines of an LCD panel.05-19-2011
20100141637METHOD FOR DRIVING PLASMA DISPLAY PANEL - The plasma display panel driving method is a method of driving a panel provided with a plurality of discharge cells, each having a scan electrode and a sustain electrode, and includes forming one-field period by arranging a plurality of sub-fields including an initializing period, address period, and sustain period, wherein sustain pulse is either a first sustain pulse for generating emission having one peak at the discharge cell or a second sustain pulse for generating emission having two peaks at the discharge cell, and rise time of second sustain pulse applied to the scan electrode and rise time of second sustain pulse applied to the sustain electrode are individually set in accordance with ratios of discharge cells for emitting light in the sustain period of the sub-field.06-10-2010
20100164939DISPLAY AND COMMUNICATION METHOD THEREOF - A display includes a timing controller and a source driver. The timing controller reflects a rule making a frame recognizable on a signal different from a gate start pulse (GSP) informing of a start of the frame and transmits the rule-reflected signal. The source driver receives the rule-reflected signal transmitted from the timing controller and checks the rule reflected on the rule-reflected signal to thereby recognize the frame. The rule is reflected on the signal different from the GSP to inform of frame start or frame change and the rule-reflected signal is transmitted to the source driver. Using the rule, the source driver can recognize frame start or frame change. Accordingly, there is an effect of eliminating a necessity of a change in hardware resources or provision of an additional hardware resource in the source driver for the recognition of frame start or frame change.07-01-2010
20090322728LDC panel driver with self masking function using power on reset signal and driving method thereof - In a liquid crystal display (LCD) panel driver with a self-masking function using a power-on reset signal, and in a method of driving the same, the LCD panel driver includes a power-on reset signal generation unit that generates a power-on reset signal in response to a supply voltage applied to a LCD panel; a latch unit that receives a start pulse signal instructing that source lines of the LCD panel be driven and generates first and second set signals for setting an initial value of an output signal of a flip-flop to be in a predetermined default logic level, in response to the power-on reset signal; and a counter unit that generates a start pulse masking signal by masking at least one pulse of the start pulse signal in response to the first and second set signals and the start pulse signal.12-31-2009
20100220091ORGANIC LIGHT EMITTING DISPLAY - An organic light emitting display includes a pixel circuit that compensates for variations of the threshold voltage of a driving transistor. The organic light emitting display includes a scan driver, a data driver, a power source unit, and a plurality of pixels. If a pixel is assumed to be positioned in an ith (i is a natural number) horizontal line, that pixel includes an organic light emitting diode (OLED), a first transistor coupled between a power source line and the OLED, a second transistor having a gate electrode coupled to an ith scan line for supplying the data signal to the first transistor, a third transistor coupled between the OLED and the first transistor and having a gate electrode coupled to an ith emission control line, and a storage capacitor coupled between the gate electrode of the first transistor and an anode electrode of the OLED.09-02-2010
20110084958ORGANIC LIGHT EMITTING DISPLAY AND METHOD OF DRIVING THE SAME - An organic light emitting display is capable of reducing power consumption. The organic light emitting display includes a scan driver for sequentially supplying scan signals to scan lines, a data driver for supplying data signals to data lines in synchronization with the scan signals, pixels located at crossing regions of the scan lines and the data lines, a timing controller for determining a normal driving mode for displaying a normal image and a standby driving mode displaying less information than the normal image, and a power source for supplying a first power and a second power to the pixels, wherein a voltage difference between the first power and the second power in the normal driving mode is a first voltage, and a voltage difference between the first power and the second power is a second voltage different from the first voltage.04-14-2011
20110084959PIXEL AND ORGANIC LIGHT EMITTING DISPLAY USING THE SAME - A pixel of an organic light emitting display includes an OLED having a cathode electrode coupled to a second power source, a second transistor having a second electrode coupled to an anode electrode of the OLED, the second transistor being for supplying current to the OLED, a first transistor coupled between a data line and a gate electrode of the second transistor, the first transistor configured to turn on when a scan signal is supplied to a scan line, a third transistor coupled between a first electrode of the second transistor and a first power source, the third transistor configured to turn off when an emission control signal is supplied to an emission control line, and a storage capacitor coupled between the gate electrode and first electrode of the second transistor. The voltage of the data signal is equal to or lower than a threshold voltage of the OLED.04-14-2011
20100259535SCANNING LINE DRIVING CIRCUIT, DISPLAY DEVICE, AND SCANNING LINE DRIVING METHOD - A scanning line driving circuit includes a first transistor having a source electrode connected to a power supply and a drain electrode to a scanning line and a second transistor having a source electrode connected to the scanning line and a drain electrode connected to a clock signal line. The conductivity type of the second transistor is identical to that of the first transistor. A bias can be supplied, so that the first and second transistors are caused to be in an off-state simultaneously.10-14-2010
20100177088PLASMA DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A voltage of sustain electrodes (SU07-15-2010
20090322729PLASMA DISPLAY DEVICE - A plasma display device is provided. The plasma display device can prevent the generation of complementary bright spots or the occurrence of voltage peaking by adjusting the time to apply a bias voltage during a reset period. Thus, it is possible to improve the discharge properties and picture quality of a PDP.12-31-2009
20100066723DISPLAY APPARATUS AND METHOD OF DRIVING THE SAME - A display apparatus includes a timing controller, a column driver, a row driver and a display unit. The timing controller outputs a first column clock embedded into image data during an active period, and outputs a second column clock embedded into blank data during a blank period. The column driver detects the first column clock and the image data and converts the image data into a first analog signal using the first column clock, and detects the second column clock and the blank data and converts the blank data into a second analog signal using the second column clock. The first column clock has a voltage level greater than a voltage level of the image data. The second column clock is embedded into the blank data and has a voltage level substantially the same as the voltage level of the image data.03-18-2010
20100053145INTEGRATED CIRCUIT DEVICE AND ELECTRONIC EQUIPMENT - An integrated circuit device includes: a plurality of data line driving circuits that drive a plurality of data voltage supply lines; and a correction data calculation section that calculates correction data for correcting differences in data voltages outputted from the plurality of data line driving circuits, wherein the correction data calculation section executes, in one horizontal scanning period in a non-display period in a vertical scanning period, a first mode to obtain the correction data corresponding to a data line driving circuit to be corrected among the plurality of data line driving circuits.03-04-2010
20100053144IMAGE DISPLAY DEVICE - Provided is an image display device including: a plurality of pixel scanning lines; a plurality of signal lines; and a plurality of pixel circuits corresponding to intersections between the pixel scanning lines and the signal lines. Each of the pixel circuits includes: a driver transistor; a light emitting element for emitting light based on the current supplied from the driver transistor; a pixel switch for generating a potential based on an image signal and a scanning signal; a capacitor element for controlling the driver transistor based on a potential difference caused by the potential supplied from the pixel switch; and a reset switch for setting a potential at an end of the capacitor element to a predetermined state based on a scanning signal supplied from one of the pixel scanning lines preceding the scanning signal which corresponds to the corresponding one of the plurality of pixel circuits.03-04-2010
20120242647CONTROL METHOD OF OUTPUT SIGNAL FROM TIMING CONTROLLER IN FLAT PANEL DISPLAY DEVICE - An exemplary control method of an output signal (e.g., from a timing controller in a flat panel display device) is adapted to be operative with a first signal with multiple pulses. In the control method, during a first time segment including part of the pulses of the first signal, a first enable signal is provided passing through a transmission path after a first time length from a rising edge of each of the part of the pulses. During a second time segment including another part of the pulses of the first signal, a second enable signal is provided passing through a part of the transmission path after a second time length from a rising edge of each of the another part of the pulses. The first time length is shorter than the second time length.09-27-2012
20110148852LIQUID CRYSTAL DISPLAY DEVICE - The disclosed liquid crystal display device includes a display panel for displaying a picture thereon, a plurality of gate drive ICs for forwarding scan pulses for driving gate lines on the display panel, a plurality of upper data drive ICs for supplying pixel voltages to data lines on one side of the display panel respectively, a plurality of lower data drive ICs for supplying the pixel voltages to the data lines on the other side of the display panel respectively, a first timing controller for generating and supplying an upper data control signal to the upper data drive ICs for controlling operation of the upper data drive ICs, and a second timing controller for generating and supplying a lower data control signal to the lower data drive ICs for controlling operation of the lower data drive ICs.06-23-2011
20100128022POWER SUPPLY CIRCUIT OF DISPLAY DEVICE AND DISPLAY DEVICE USING THE SAME - Provided are a power supply circuit and a display device which are capable of enhancing power efficiency even when applied to a display panel whose current consumption varies. The power supply circuit boosts and outputs an input voltage using a booster chopper circuit. A frequency control circuit changes a frequency of a clock signal, which controls a switch of the chopper circuit, in accordance with a load of the power supply circuit. The frequency control circuit divides an operation of the display device into a display effective period at a high load and a vertical retrace period at a low load, based on a vertical synchronizing signal and a horizontal synchronizing signal. The frequency control circuit sets the frequency of the clock signal in a high-load period to be higher than that in a low-load period.05-27-2010
20110102413ACTIVE MATRIX ELECTROLUMINESCENT DISPLAY WITH SEGMENTED ELECTRODE - An active-matrix electroluminescent display including a display substrate; a first electrode disposed over the display substrate; two second electrodes disposed over the first electrode; an electroluminescent light-emitting layer formed between and in electrical contact with the first and second electrodes, so that first and second active areas are defined where the first electrode and each respective second electrode overlap, the light-emitting layer emitting light from each active area in response to current between the first and each respective second electrode; a drive circuit including a drive transistor electrically connected to the first electrode for controlling the flow of current through the electroluminescent light-emitting layer; two power supply circuits connected to respective second electrodes for selectively providing respective voltages to the respective second electrodes; and a controller for sequentially or simultaneously causing the power supply circuits to provide the voltages to the respective second electrodes.05-05-2011
20100295842TIMING CONTROLLER, IMAGE DISPLAY DEVICE, TIMING SIGNAL GENERATING METHOD, AND IMAGE DISPLAY CONTROL METHOD - A timing controller is provided which is capable of achieving normal image display at a time of reverse scanning in upward and downward directions and right and left directions. In an image display device having a plurality of scanning line driving ICs (Integrated Circuits), a valid line counting section counts a count of valid driving lines based on a DE (Data Enable) signal and DCK (Dot Clock) signal. A cascade signal counting section counts up a total count of outputs from a count of VCK (Vertical Clock) signals including a VSP (Vertical Start Pulse) 11-25-2010
20100295841DISPLAY DEVICE AND MOBILE TERMINAL - A display device of an embodiment of the present invention is a display device of an active matrix type, and includes a display driver supplied with image data included in serial data by serial transmission. The serial data has a first flag for specifying a polarity of voltage of a common electrode added thereto. The display driver generates, in accordance with a timing of a serial clock, a timing signal for a horizontal period for a data signal line driver, and a timing signal for a gate signal line driver. This realizes a display device capable of easily generating, within a driver IC, a timing signal for writing the image data in pixels.11-25-2010
20110148853DISPLAY PANEL - Noise is reduced at a so-called Q-node and a so-called A-node of shift registers in a gate lines driving block of a scan driven display system so that the display system can be safely operated even at elevated temperatures. A variety of techniques may be used to reduce the noise. A first of the techniques applies charging pulses to the A-node at a rate faster than just once every 2H durations, where 1H is the duration of a single row drive. More specifically, a plurality of so-called inverter circuits, rather than just one are included in each shift register stage and the inverters are operated in synchronism with out of phase clock signals so as to thereby increase the rate at which the A-node is pulsed to a high voltage level. A second technique charges up the Q-node in multiple steps. A third technique pulls down the carry line at times when it does not need to go high. A fourth technique combines one or more of the first through third techniques.06-23-2011
20100097368DISPLAY DEVICE AND DRIVING METHOD THEREOF - A display device and a driving method of the same are provided. The display device includes a display panel having gate lines and data lines. A gate driver is included in each of stages and supplies each of the plurality of gate lines with gate signals using a clock signal and a clock bar signal. Each of the stages includes a gate output terminal through which the gate signal is outputted, a pull-down unit connected to the gate output terminal that pulls down a level of the gate signal using a first gate-off voltage. A holding unit is connected to the gate output terminal and holds the level of the pulled-down gate signal at a level of a second gate-off voltage using the second gate-off voltage, which is higher than the first gate-off voltage.04-22-2010
20100097370Driving System of Liquid Crystal Display - A driving system of a liquid crystal display includes a pixel data line, a timing controller, a source driver and a gate driver. The pixel data line provides pixel data to the source driver directly. The timing controller is operative to receive a clock signal and a synchronization signal, so as to output a source control signal and a gate control signal. The source driver receives the clock signal, the source control signal and the pixel data, so as to output an image data signal. Upon receiving the gate control signal, the gate driver is operative to output an on/off signal.04-22-2010
20100097369ELECTRO-OPTICAL DEVICE AND DRIVING CIRCUIT - A driving circuit of an electro-optical device, a capacitance-line-driving circuit shifting voltage of a capacitance line to one voltage of two-value voltage, and the capacitance-line-driving circuit includes a unit control circuit provided correspondingly to the capacitance line at both end portions of the capacitance line, and the unit control circuit corresponding to one capacitance line includes, a latch circuit maintaining a logic level at one level for at least a period of the scanning line corresponding to the one capacitance line being selected, a switch provided between the capacitance line and a signal line supplying a capacitance signal in which the two-value voltage is switched over at a predetermined cycle, the switch being electrically connected when the logic level is one level and electrically disconnected when the logic level is the other level.04-22-2010
20100091005ACTIVE MATRIX DISPLAY DEVICE - A data writable and readable pixel is provided. The pixel includes a transistor which is turned on or off by a selection signal on a selection line; a static memory (a memory including two drive transistors connected to a data line through the transistor; and light emitting devices undergoing control of light emitting according to the storage state of the static memory. In a write mode, the selection transistor is turned on, while, at the same time, data on the data line is set to write the data in the static memory. In a read mode, the selection transistor is turned on, and, at the same time, the data line is set to a floating state, and the stored content of the static memory is read onto the data line.04-15-2010
20090322731DISPLAY DEVICE - A display device includes a memory unit formed in each pixel to store video data and including a first inverter circuit whose input terminal is connected to a first node and whose output terminal is connected to a second node and a second inverter circuit whose input terminal is connected to the second node and whose output terminal is connected to the first node, a first transistor connected between the output terminal of the second inverter circuit and the video line, and a second transistor connected between the first node and the video line, in which at the time of reading the video data, the first transistor is turned ON, and the second transistor is turned OFF, to output the video data stored in the memory unit to the video line.12-31-2009
20080246752Display, Timing Controller and Column Driver Integrated Circuit Using Clock Embedded Multi-Level Signaling - The present invention relates to a display, a timing controller and a column driver IC, and more particularly to a display, timing controller and column driver integrated circuit using clock embedded multi-level signaling. The present invention provides a timing controller including a transmitter for transmitting a transmission signal wherein a transmission clock signal is embedded therein between a transmission data signal to have a signal magnitude different from that of the transmission data signal. The present invention also provides a column driver integrated circuit including a receiving unit for separating a clock signal from a received signal using a magnitude of the received signal, and for performing a sampling of a received data signal from the received signal using the separated clock signal.10-09-2008
20090096777Liquid Crystal Display Device - A data driver outputs image data to a liquid crystal panel, using a trailing edge of a timing signal as a trigger. When a user operates a remote control for power-off, a main controller outputs, to a driver controller, a stop signal for stopping the timing signal, and a power switching signal for switching the image data to a low power for output after a predetermined time from the stop signal. Accordingly, the image data is switched to a low power for standby mode after the supply of the timing signal to the data driver is completely stopped. Thus, when the data driver outputs image data to the panel in response to a last pulse of the timing signal, the data driver is prevented from outputting image data having been switched to a low power, so that noise can be prevented from appearing on the screen of the panel.04-16-2009
20080266283Led Drive Circuit - An LED driving circuit that can improve characteristics is provided. An LED driving circuit 10-30-2008
20100245334DISPLAY APPARATUS AND ELECTRONIC INSTRUMENT - A display apparatus includes: a plurality of pixel circuits; drive scan lines which supply the same power supply potential to each group of the plurality of pixel circuits, the group having a plurality of pixel circuits for a plurality of successive rows; and a power supply circuit which, during an extinction period for extinguishing light-emitting devices in pixel circuits belonging to each group, supplies a high-level power supply potential to the respective pixel circuits belonging to the group related to the extinction period so as to switch the power supply potential to the high-level power supply potential higher than the power supply potential, wherein each of the plurality of pixel circuits includes a storage capacitor which retains a voltage corresponding to a video signal, a drive transistor which supplies a current based on the voltage retained in the storage capacitor to the corresponding light-emitting device by receiving the power supply potential supplied to the corresponding drive scan line, a light-emitting device which emits light in accordance with the current supplied from the drive transistor, and a write transistor which, during the extinction period, gives an extinction potential for extinguishing the light-emitting device to a gate terminal of the drive transistor, and then writes the voltage corresponding to the video signal to the storage capacitor.09-30-2010
20100321375INFORMATION REPRODUCING APPARATUS, INFORMATION REPRODUCING METHOD, AND PROGRAM - An information reproducing apparatus includes: a reproduction controller which generates a stop period discerning signal for discerning a stop period in which output of an image signal to a display section is stopped and outputs the generated stop period discerning signal with the image signal; and a display controller which controls the output of the image signal to the display section, the display controller discerning the stop period on the basis of the stop period discerning signal, stopping the output of the image signal to the display section in the stop period, and enabling the output of the image signal in an effective period other than the stop period.12-23-2010
20110134107FIELD-EFFECT TRANSISTOR SHIFT REGISTER - A shift register, each stage thereof provided to drive a corresponding output line, includes an output transistor that drives the output line and an additional transistor of the same technology and of the same polarity as the output transistor. The additional transistor is connected in such a way as to be subject to bias conditions similar to the output transistor, such that the additional transistor's threshold voltage, identical at the start of life to that of the output transistor, drifts as quickly or more quickly as the threshold voltage of the output transistor. The additional transistor is used to adjust the precharging voltage of a gate of the output transistor to its conduction performance characteristics during the precharging and/or selection phase.06-09-2011
20110134106Method For Reducing Temperature-Caused Degradation In The Performance Of A Digital Reader - A method for reducing temperature-caused degradation of the performance of a digital reader comprising pixels, the method including positioning at least one sheet of compressed particles of exfoliated graphite adjacent to a plurality of the pixels of the digital reader.06-09-2011
20110254830SCAN SIGNAL TRANSMISSION SYSTEM AND METHOD THEREOF - A scan signal transmission system and a method thereof are provided, which are applicable to a display device. The system includes a display area circuit and a gate circuit, the display area circuit has a plurality of pixel scan lines, and the gate circuit is connected to each of the pixel scan lines. The gate circuit is used for obtaining a scan signal from a clock generator, so as to transmit the scan signal to each of the pixel scan lines sequentially. During each frame scan operation, the gate circuit transmits the scan signal to the pixel scan lines in a reverse signal transmission direction.10-20-2011
20120146989METHODS AND APPARATUS FOR SCRAMBLER SYNCHRONIZATION - Methods and apparatus for enhanced synchronization of a descrambler, such as used in a signal interface that carries scrambled data. In one embodiment, the descrambler self-synchronizes to a scrambled bit stream (rather than receiving an external “sync” trigger), thereby allowing for much more rapid synchronization. This is accomplished in one variant by identifying a scrambled symbol that has an expected value, predicting an internal scrambler seed based on the expected value, and verifying the predicted seed. For example, an invention-enabled device can synchronize to a DisplayPort stream during blanking intervals which are filled with known “dummy” bytes. Blanking intervals are much more frequent than explicit synchronization symbols, thus an invention enabled device can greatly improve synchronization times, and eliminate e.g., visual artifacts.06-14-2012
20110084960SHIFT REGISTER AND DISPLAY DEVICE - The shift register includes first to fourth flip-flops. A first clock signal which is in a first voltage state in a first period and in a second voltage state in second to fourth periods is input to the first flip-flop. A second clock signal which is in the first voltage state in the second period and in the second voltage state in the third period and the fourth period is input to the second flip-flop. A third clock signal which is in the second voltage state in the first, second, and fourth periods and in the first voltage state in the third period is input to the third flip-flop. A fourth clock signal which is in the second voltage state in the first and second periods and in the first voltage state in the fourth period is input to the fourth flip-flop.04-14-2011
20110157147DRIVING DEVICE OF LIGHT EMITTING UNIT - A driving device of a light emitting unit is provided, which includes a driving circuit, a memory unit, a reset circuit, a first switch and a compensation circuit. The driving circuit determines a driving current according to a voltage of a control node. The memory unit maintains a voltage of the control node of the driving circuit. The reset circuit provides a reset voltage to the control node of the driving circuit during a reset period. A first node of the first switch receives a data voltage, and the control node of the first switch receives a scan voltage. The compensation circuit is connected between a second node of the first switch and the control node of the driving circuit to transmit the data voltage provided by the first switch to the control node of the driving circuit.06-30-2011
20100110065DRIVING CIRCUIT AND DRIVING METHOD FOR ORGANIC EL PANEL - A data driver includes multiple driving units which are provided in increments of data lines of a display panel, and each of which supplies a driving signal to a corresponding data line. A scanning driver drives multiple scanning lines of the display panel. Image memory stores image data which is supplied from an external circuit, and which is to be displayed on the panel. A line code generating unit encodes line data in increments of the scanning lines by predetermined computation processing, thereby generating a line code for each scanning line. A controller controls the data driver and the scanning driver based upon the image data stored in the image memory and the line codes generated in increments of the scanning lines.05-06-2010
20100110063Flicker-constrained liquid crystal display - A liquid crystal display has pixel electrodes, a common electrode, a liquid crystal layer provided between the pixel electrodes and the common electrode, and a back light that supplies light transmitting through the liquid crystal layer, further has a control circuit that applies a drive voltage corresponding to image data between the pixel electrodes and the common electrode such that the polarity of the drive voltage is inverted for each predetermined period. Within a frame period, the control circuit applies a drive voltage of a first polarity in a first period, applies a drive voltage of a second polarity opposite to the first polarity, which is the same voltage as the drive voltage of the first polarity, in a second period after the first period, and controls such that the back light is turned off in the first period and turned on in the second period.05-06-2010
20100110064SOURCE DRIVER AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME - A source driver and a liquid crystal display (LCD) device having the same. A source driver may carry a clock in a data current, and may recover a clock signal and/or a data signal without being substantially affected by external frequencies and/or resistance. A source driver may include a trans-impedance amplifier which may receive data currents, convert data currents into voltages, and/or output voltages as data voltages and/or clock voltages. A source driver may include a comparator electrically coupled to a trans-impedance amplifier, which may change levels of data and/or clock voltages applied from a trans-impedance amplifier, and/or may output level-changed voltages as data signals and/or a clock signal.05-06-2010
20110096067DISPLAY DEVICE HAVING DATA DRIVER ADJUSTING SETUP TIME AND HOLD TIME - A display device includes a display panel having an adjustable refresh frequency, a data driver for receiving display data, generating driving voltages based on the display data, and driving the display panel to display images using the driving voltages, and a timing controller providing a timing control signal to the data driver. The timing control signal is generated according to the refresh frequency of the display panel. The data driver dynamically adjusts a setup time and a hold time of the data driver according to the timing control signal.04-28-2011
20100214279SHIFT REGISTER - A shift register which is capable of minimizing a spike voltage is disclosed. The shift register includes a plurality of stages, each including a plurality of nodes, a scan pulse output unit controlled according to voltages at the nodes for outputting a scan pulse and supplying it to a corresponding gate line through a scan output terminal, a carry pulse output unit controlled according to the voltages at the nodes for outputting a carry pulse and supplying it to an upstream stage and a downstream stage through a carry output terminal, a node controller for controlling voltage states of the nodes in response to a carry pulse from the upstream stage and a carry pulse from the downstream stage, and a discharging unit connected to any one of a plurality of clock transfer lines and the scan output terminal for discharging a spike voltage of the scan output terminal.08-26-2010
20100066722INFORMATION REPRODUCTION APPARTUS AND VIDEO DISPLAY APPARATUS - In an asynchronous read channel system, a reference value interpolation-type maximum likelihood decoder ASML having a small circuit scale (e.g., seven taps) is employed. A nonlinear waveform the equalizer SEQ is provided before the maximum likelihood decoder ASML. The nonlinear waveform the equalizer SEQ includes an FIR filter having, for example, four taps, and performs nonlinear waveform equalization with respect to an input digital signal so that only signal components having small amplitudes and high frequencies are amplified. After the nonlinear waveform equalization, the signal is input to the reference value interpolation-type maximum likelihood decoder ASML, which performs maximum likelihood decoding with respect to the signal. Therefore, even when the reference value interpolation-type maximum likelihood decoder includes a smaller number of taps and thus has a small circuit scale, maximum likelihood decoding with a high error correction function can be performed.03-18-2010
20100066721PLASMA DISPLAY DEVICE AND DRIVING METHOD THEREOF - A first ramp waveform rising from a first potential (Vi03-18-2010
20110148854VOLTAGE SUPPLY CIRCUIT AND DISPLAY APPARATUS - A voltage supply circuit includes a switching circuit to switch among a plurality of driving voltages including a first driving voltage and a second driving voltage lower than the first driving voltage based on an operation mode of a display apparatus and control at least one of a switching speed and a switching timing so that one of a first switching speed and a first switching timing to the first driving voltage becomes faster than a corresponding one of a second switching speed and a second switching timing to the second driving voltage.06-23-2011
20110148850SYNCHRONOUS PROCESSING SYSTEM AND SEMICONDUCTOR INTEGRATED CIRCUIT - A synchronous processing system having semiconductor integrated circuits. One of the semiconductor integrated circuits as a master chip comprises a first synchronization controller and a first counter controller that allows a counter in the master chip to perform counting synchronously with a clock pulse in response to a synchronization control signal from the first synchronization controller. Another semiconductor integrated circuit as a slave chip comprises a second synchronization controller that receives the synchronization control signal from the master chip, and a second counter controller that allows a counter in the slave chip to perform counting synchronously with the clock pulse in response to the synchronization control signal received. Each of the first and second counter controllers allows the counter to stop counting if the synchronization control signal is not supplied at the time point that a count value of the counter has reached a predetermined value.06-23-2011
20110148849DISPLAY DEVICE - A display device according to an embodiment comprises: a display panel; a data driver that supplies a data signal to the display panel; a gate driver that supplies a gate signal to the display panel; and a timing driver that controls the data driver and the gate driver and comprises a voltage controlled oscillator of which frequency is varied according to a control signal generated in the timing driver.06-23-2011
20100026678IMAGE PROCESSING APPARATUS, METHOD OF CONTROLLING THE SAME, COMPUTER PROGRAM, AND STORAGE MEDIUM - One frame period of image data is divided into a plurality of subframes and driven. A first subframe included in one frame and a second subframe following the first subframe are output at opposite polarities. The image data is output while switching a phase mode between a first mode of driving the first subframe at positive polarity and the second subframe at negative polarity and a second mode of driving the first subframe at negative polarity and the second subframe at positive polarity.02-04-2010
20100020062STEREO DISPLAY AND DISPLAY - A stereo display including a display panel unit, a shutter glasses unit, and a backlight unit is provided. The display panel unit sequentially displays a right eye image and a left eye image according to a right eye synchronizing vertical signal and a left eye synchronizing vertical signal. The shutter glasses unit has a right eye glass and a left eye glass, wherein the right eye glass is synchronously opened according to the right eye synchronizing vertical signal, and the left eye glass is synchronously opened according to the left eye synchronizing vertical signal. The backlight unit provides a light source to the display panel unit, wherein the backlight unit is synchronously turned on and off according to the right eye synchronizing vertical signal, and the backlight unit is also synchronously turned on and off according to the left eye synchronizing vertical signal.01-28-2010
20100020061DISPLAY DEVICE AND METHOD OF DRIVING THE DISPLAY DEVICE - A display panel 01-28-2010
20120306845TRANSMISSION DEVICE, RECEPTION DEVICE, TRANSMISSION-RECEPTION SYSTEM, AND IMAGE DISPLAY SYSTEM - Reception devices 12-06-2012
20110050677SOURCE DRIVER - A source driver adapted to drive a display panel is provided herein. The source driver includes a first output buffer, a detection module and a conversion module. The first output buffer enhances a first pixel signal and thereby outputs a first enhanced pixel signal. The detection module detects a rise time of the first enhanced pixel signal. The conversion module adjusts a driving capability of the first output buffer in response to the rise time for adjusting a slew rate of the first output buffer. Therefore, the first output buffer in the source driver can dynamically and automatically adjusts the slew rate of the first output buffer through a feedback mechanism composed of the detection module and the conversion module.03-03-2011
20120038622LEVEL SHIFTER, METHOD FOR GENERATING CLOCK-PULSE OUTPUT SIGNAL AND CORRESPONDING FLAT DISPLAY DEVICE - A level shifter includes at least one level shift unit for generating a corresponding clock-pulse output signal. The level shift unit receives a corresponding clock-pulse input signal. The clock-pulse output signal successively shares charges with respective auxiliary reference voltage sources to pull up a voltage level of the clock-pulse output signal from the second reference voltage to the first reference voltage. Alternatively, the clock-pulse output signal successively shares charges with respective auxiliary reference voltage sources to pull down the voltage level of the clock-pulse output signal from the first reference voltage to the second reference voltage.02-16-2012
20120038621Display device, signal line driver, and data transfer method - A liquid crystal display device includes a timing controller, a liquid crystal display panel, multiple data drivers, and gate drivers. The timing controller supplies control data to specified drivers among the data drivers. The specified drivers generate gate driver control signals to control gate drivers in response to the control data, and supply gate driver control signals to the gate drivers.02-16-2012
20100182306METHOD FOR DRIVING DISPLAY DEVICE - To suppress degradation of a transistor. A method for driving a liquid crystal display device has a first period and a second period. In the first period, a first transistor and a second transistor are alternately turned on and off repeatedly, and a third transistor and a fourth transistor are turned off. In the second period, the first transistor and the second transistor are turned off, and the third transistor and the fourth transistor are alternately turned on and off repeatedly. Accordingly, the time during which the transistor is on can be reduced, so that degradation of characteristics of the transistor can be suppressed.07-22-2010
20120044240ORGANIC LIGHT EMITTING DISPLAY AND METHOD OF DRIVING THE SAME - There is provided a method of driving an organic light emitting display capable of minimizing or reducing the amount of instantaneously current flowing in the display that is driven in a concurrent emission method. The method includes setting pixels included in j blocks of a panel in a non-emission state, charging the pixels with voltages corresponding to data signals, and emitting light by the pixels in units of horizontal lines respectively included in the j blocks to correspond to the charged voltages.02-23-2012
20120206437DISPLAY APPARATUS - A display apparatus includes a substrate, gate lines disposed on the substrate, data lines extending across the gate lines, and pixels connected to the gate lines and the data lines. The pixels arranged in a matrix of rows and columns. The pixels disposed in the same columns are alternately connected to data lines disposed to the left or right sides of the column. The pixels may be disposed in different display areas of the substrate. Adjacent pixels in the same columns but in different display areas may be connected to the same data line.08-16-2012
20120001893PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - A pixel having an improved response time includes an organic light emitting diode connected between a first power supply and a second power supply; a first transistor connected between the first power supply and the organic light emitting diode, the first transistor including a gate electrode connected to a first node; a second transistor connected between a first electrode of the first transistor connected to the first power supply and a data line, the second transistor including a gate electrode connected to a current scanning line; a third transistor connected between a second electrode of the first transistor connected to the organic light emitting diode and the first node, the third transistor including a gate electrode connected to the current scanning line; a fourth transistor connected between the second electrode of the first transistor and the organic light emitting diode, the fourth transistor including a gate electrode connected to a light emitting control line; a fifth transistor connected between the second power supply or a third power supply that is an initialization power supply and the first node, the fifth transistor including a gate electrode connected to a previous scanning line; a sixth transistor connected between the second power supply or the third power supply and the fourth transistor, the sixth transistor including the gate electrode connected to the previous scanning line; and a storage capacitor connected between the first power supply and the first node.01-05-2012
20120001894GATE DRIVING CIRCUIT AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME - A gate driving circuit is capable of improving yield by virtue of acquisition of a design margin and reduction of a fabricating cost. The gate driving circuit includes a shift resistor having N stages driven by a start signal and first to fourth clock signals output from the exterior, and an externally input reset signal is applied to reset terminals of the N−101-05-2012
20110096068LEVEL SHIFTER - A level shifter including a voltage selection unit and at least one voltage level conversion unit. The voltage selection unit may be configured to apply a first voltage to a power supply node during a first time interval and apply a second voltage to the power supply node during a second time interval, in response to a control signal. The voltage level conversion unit may be connected to the power supply node and may be configured to convert a voltage level of an input signal to another voltage level based upon a voltage level at the power supply node and a third voltage.04-28-2011
20120007849DISPLAY, PIXEL CIRCUITRY AND OPERATING METHOD OF PIXEL CIRCUITRY - A display, a pixel circuitry and an operating method of the pixel circuitry are provided. The display includes a source driver and a pixel circuitry. The source driver converts a first pixel data to a first polarity data voltage and a second polarity data voltage during a first frame period and converts a second pixel data to a third polarity data voltage and a fourth polarity data voltage during a second frame period. The pixel circuitry is coupled to the source driver. The pixel circuitry stores the first polarity data voltage and the second polarity data voltage during the first frame period, displays the first polarity data voltage and the second polarity data voltage during a first sub-period and a second sub-period of the second frame period respectively, and stores the third polarity data voltage and the fourth polarity data voltage during the second frame period.01-12-2012
20110018858Organic light emitting display and method of driving the same - An organic light emitting display capable of compensating for threshold voltage variations of a driving transistor may include scan and data drivers, pixels, an initial power source unit, a switching unit, a compensating unit, and a timing controller. The scan and data drivers may control current that flows from a first to a second power source via an OLED. The switching unit may selectively couple the initial power source unit to the data driver. The compensating unit may store second data corresponding to a threshold voltage of a driving transistor and may transmit the stored second data to the data driver. The timing controller may transmit the externally supplied first data input to the data driver and may control the scan driver, the data driver, and the compensating unit. The data driver may generate and supply third data signals to the pixels using the first and the second data.01-27-2011
20110018859ELECTRO-OPTICAL DEVICE AND ELECTRONIC APPARATUS - An electro-optic device includes an electro-optical panel and a polarization axis conversion unit that emits transmission lights corresponding to a first image or a second image with the polarization axis of the first image intersecting the polarization axis of the second image, by converting the polarization axis of the lights emitted from the electro-optical panel. The electro-optic device further includes a scanning signal supply unit supplying scanning signals through the plurality of scanning lines and an image signal supply unit supplying a first image signal corresponding to a first image to the plurality of pixel sections during a first field period and supplying a second image signal corresponding to a second image to the plurality of pixel sections during a second field period through the plurality of data lines, the first field period and the second field period being divided into a plurality of subfield periods respectively.01-27-2011
20110018857Line Addressing Methods And Apparatus For Partial Display Updates - A method for updating a submatrix of a display matrix of a display device comprises sequentially selecting rows of the display matrix starting from an initial row of the display matrix. The method includes determining whether a selected row precedes a first row of the submatrix in a first drive frame of a waveform having two or more drive frames. If a condition that a selected row precedes the first row of the submatrix in the first drive frame of the waveform is false, the method includes addressing the selected row for a first line address period. If a condition that a selected row precedes the first row of the submatrix in the first drive frame of the waveform is true, the method includes addressing the selected row for a second line address period.01-27-2011
20100277461SYSTEMS AND METHODS TO DRIVE AN LCD - In various embodiments, the largest transition in the select waveform of successive approximation technique is eliminated to reduce power dissipation in liquid crystal displays. Power dissipation in the driver circuit is analyzed for gray scale images for several select sequences. They are compared and new select sequences are proposed to achieve low power dissipation. A combination of pulse width modulation for MSBs and pulse height modulation for LSBs to form discrete trapezoidal waveforms is used to reduce peak amplitude of select and data waveforms and achieve a low supply voltage and low power dissipation in the driver circuit.11-04-2010
20090135174Display apparatus, driving method for display apparatus and electronic apparatus - The present invention provides a display apparatus, includes: a pixel array section; and a driving section; the pixel array section including a plurality of scanning lines extending along the direction of a row, a plurality of signal lines extending along the direction of a column, and a plurality of pixels disposed in rows and columns at places at which the scanning lines and the signal lines intersect with each other. The driving section including a write scanner and a signal selector.05-28-2009
20120026155ORGANIC LIGHT EMITTING DISPLAY - There is provided an organic light emitting display. The organic light emitting display includes a display unit including pixels coupled to scan lines, control lines, and data lines; a control line driver for providing control signals to the pixels through the control lines; a scan driver for providing scan signals to the pixels through the scan lines; a data driver for providing data signals to the pixels through the data lines; a first power source driver for applying a first power to the pixels of the display unit; a second power source driver for applying a second power to the pixels of the display unit; and a timing controller for controlling the control line driver, the power source drivers, the scan driver, and the data driver. The timing controller is configured to determine a refresh rate of input data to control a length of an emission period in a frame.02-02-2012
20110007063DRIVING CIRCUIT AND DRIVING METHOD - A driving circuit includes: output buffers provided to drive first and second groups of data lines, which are connected with pixels of a display panel, with drive voltage signals supplied to input terminals of the output buffers, respectively; first and second common portions; and a first short-circuiting section provided for each of the data lines of the first group to connect the input terminal of a corresponding one of the output buffers for the first group of data lines to the first common portion in response to a first connection control signal. A second short-circuiting section is provided for each of the data lines of the second group to connect the input terminal of a corresponding one of the output buffers for the second group of data lines to the second common portion in response to a second connection control signal.01-13-2011
20100118022LEVEL SHIFTER - A level shifter includes a first input circuit, a first load circuit, a second input circuit, and a second load circuit. The first input circuit receives a first input signal and a second input signal that swing between a first high power voltage and a first low power voltage. The first load circuit generates a high voltage, a sub-high voltage, a low voltage, and a sub-low voltage. The second input circuit receives a first voltage pair including the high voltage and the low voltage, and a second voltage pair including the sub-high voltage and the sub-low voltage. The second load circuit generates an output signal that swings between a second high power voltage and a second low power voltage.05-13-2010
20110090213PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - A pixel and organic light emitting display device. The pixel includes an organic light emitting diode, first through fourth transistors, and a second capacitor. The fourth transistor is for controlling an amount of current flowing through the organic light emitting diode. A first transistor is coupled between a second terminal of the second capacitor and a data line and is configured to turn on in response to a scan signal supplied to an i-th scan line. A second transistor is coupled between a first terminal of the second capacitor and an initial power source and is configured to turn on in response to an other scan signal supplied to an (i−1)-th scan line. A third transistor is coupled between the second terminal of the second capacitor and a reference power source and is configured to turn off in response to an emission control signal supplied to an (i+1)-th emission control line.04-21-2011
20110102416Gate Driving Circuit and Related LCD Device - A gate driving circuit for an LCD device includes a shift register module for generating a plurality of scan signals corresponding to a plurality of channels according to a start signal and a clock signal, a plurality of logic circuits each corresponding to a channel of the plurality of channels, for outputting a driving signal to the channel according to a scan signal of the plurality of scan signals and a shutdown indication signal, and a plurality of shaping and delay units each coupled between two neighboring channels for outputting the shutdown indication signal to another channel after shaping and delaying the shutdown indication signal of a previous stage.05-05-2011
20110102415DISPLAY APPARATUS - A display apparatus includes a timing controller, a data driver, and display panel. The timing controller outputs a plurality of image signals, a first control signal, and a second control signal. The data driver converts the image signals to first voltages in response to the first control signal, outputs the first voltages, and outputs a second voltage swinging between two different voltage levels in at least one frame unit in response to the second control signal. The display panel includes a plurality of pixels, where each receives a corresponding one of the first voltages and the second voltage to display an image.05-05-2011
20100289794METHOD OF DRIVING PLASMA DISPLAY PANEL AND PLASMA DISPLAY DEVICE - In a PDP device, a technique capable of more efficiently performing address energy control according to contents of a display image (display data) to reduce the address energy. In the PDP device, as an address energy recovery circuit, a plurality of address energy control circuits (B11-18-2010
20100289793Driving method for pixel circuit and display apparatus - Disclosed here is a driving method for a pixel circuit which includes a light emitting element, a driving transistor for applying current in response to a signal value applied between a gate and a source thereof to the light emitting element when a driving voltage is applied between a drain and the source thereof, and a holding capacitor connected between the gate and the source of the driving transistor for holding the input signal value, the driving method comprising steps carried out within a light emitting period of one cycle which includes a no-light emitting period and the light emitting period, the steps including a first step to a sixth step.11-18-2010
20100289791SOURCE DRIVER AND DRIVING METHOD THEREOF - A source driver includes a plurality of first data channel pairs, a plurality of second data channel pairs, a first switch group, a second switch group, a third switch group, and a fourth switch group. Each of the first data channel pairs includes a first odd channel and a first even channel. The channels outputting voltages having the same polarity are short circuited together through the switch groups during a charge sharing period. As a result, the swings of the voltages of data lines coupled the corresponding channel are reduced, and further power consumption in the source driver could be reduced as compared with the related art.11-18-2010
20100245336DRIVING CIRCUIT AND DRIVING METHOD FOR LIQUID CRYSTAL DISPLAY - A driving circuit and driving method for liquid crystal display is disclosed. The driving circuit comprises a time sequence controller, a first data driving chip and a second data driving chip connected to the time sequence controller, and a reference voltage buffer connected to the first data driving chip and the second data driving chip respectively. The two data driving chips output a pixel voltage signal of positive polarity and a pixel voltage signal of negative polarity to a liquid crystal display panel respectively.09-30-2010
20100245335LIQUID CRYSTAL DISPLAY DEVICE, DRIVING METHOD OF THE SAME, AND ELECTRONIC DEVICE INCLUDING THE SAME - It is an object to suppress deterioration of characteristics of a transistor in a driver circuit. A first switch for controlling whether to set a potential state of an output signal by being turned on and off in accordance with the first input signal, and a second switch for controlling whether to set a potential state of an output signal by being turned on and off in accordance with the second input signal are included. A first wiring and a second wiring are brought into electrical continuity by turning on and off of the first switch or the second switch.09-30-2010
20100245337SHIFT REGISTER AND A GATE-LINE DRIVE DEVICE THEREFOR - A shift register and a gate-line drive device relate to liquid crystal display. The shift register comprises: first thin film transistor, second thin film transistor, third thin film transistor, fourth thin film transistor and fifth thin film transistor; capacitor, connected between first node and the output terminal of the present stage; first operation modular, connected between first operation signal terminal and the first node, and connected to the low level signal terminal; second operation modular, connected between second operation signal terminal and the first node, and connected to the low level signal terminal, wherein, the first operation modular and the second operation modular are alternatively operated, and the first operation modular and the second operation modular are used to maintain both of the gate and drain of the second thin film transistor at low level respectively, when the shift register is not operated.09-30-2010
20100245332DISPLAY PANNEL - A display panel is disclosed has a plurality of source data lines and at least one first gate scan line and includes at least one first display row and at least one second display row. The first display row includes a plurality of first pixel units, and each of the first pixel units includes a first driving transistor. Gates of the first driving transistors are commonly coupled to the first gate scan line, and first sources/drains of the first driving transistors are sequentially coupled to odd columns of the source data lines. Moreover, the second display row includes a plurality of second pixel units, and each of the second pixel units includes a second driving transistor. Gates of the second driving transistors are commonly coupled to the first gate scan line, and first sources/drains of the second driving transistors are sequentially coupled to even columns of the source data lines.09-30-2010
20100245333LIQUID CRYSTAL DISPLAY DEVICE CAPABLE OF REDUCING IMAGE FLICKER AND METHOD FOR DRIVING THE SAME - A method for driving a liquid crystal display adjusts the falling edges of the gate driving signals for reducing image flicker. A first gate driving signal falls from a high level to a first level at the signal falling edge. A second gate driving signal falls from the high level to a second level at the signal falling edge. When the parasitic capacitance of a first pixel is larger than that of a second pixel, the first level is lower than the second level; when the parasitic capacitance of the first pixel is substantially the same as that of the second pixel, the first level is the same as the second level; when the parasitic capacitance of the first pixel is smaller than that of the second pixel, the first level is higher than the second level.09-30-2010
20100207929Booster circuit and display device - A booster circuit has: a charge pump configured to perform a booster operation that boosts a voltage supplied from an external power source and outputs the boosted voltage as an output voltage through an output capacitor; and a feedback circuit section configured to control the booster operation depending on the output voltage. A mode of the booster operation includes: a charge mode that charges the output capacitor with the voltage supplied from the external power source; and a discharge mode that discharges the output capacitor. The mode of the booster operation is switched between the charge mode and the discharge mode depending on the output voltage. The feedback circuit section has a booster operation control section that secures a period during which the mode is not switched between the charge mode and the discharge mode in accordance with an external synchronizing signal.08-19-2010
20100207928Gate Driving Circuit and Display Device Having the Gate Driving Circuit - A gate driving circuit includes a plurality of stages connected to each other. An m-th stage (‘m’ is a natural number) of the stages includes a pull-up part, a pull-down part, a first holding part and a second holding part. The pull-up part outputs a high voltage of a clock signal as a high voltage of an m-th gate signal in response to a high voltage applied to a first output control part. The pull-down part pulls down the high voltage of the m-th gate signal to a first low voltage in response to a high voltage of an (m+1)-th gate signal. The first holding part holds a voltage applied to the first output control part as a second low voltage having a level lower than the first low voltage. The second holding part holds a low voltage of the m-th gate signal to the first low voltage.08-19-2010
20100207927Liquid Crystal Display Panel and Display Device Having the Display Panel - A display panel includes a gate driving circuit, a plurality of gate lines, a plurality of data lines and a dummy gate line. The gate driving circuit is disposed in a peripheral area surrounding a display area. The gate lines are disposed in the display area and receive a plurality of gate signals sequentially outputted from the gate driving circuit. The data lines are disposed in the display area and cross the gate lines. The dummy gate line is disposed adjacent to the last gate line of the gate lines and receives a dummy gate signal transmitted from an external device. Thus, a dummy gate line is adjacent to the last gate line and a pixel electrode connected to the last gate line is affected by a dummy gate signal applied to the dummy gate line.08-19-2010
20120299904APPARATUS AND METHOD FOR DRIVING DISPLAY - An apparatus for driving a display includes a shift register, a first latch unit, a second latch unit, a data comparison unit and a level select unit. The shift register generates multiple latch signals according to a sync signal. The first latch unit latches a data signal in response to the latch signals to obtain multiple first data corresponding to multiple channels. The second latch unit is coupled to the first latch unit and latches the first data of the channels as multiple second data in response to a latch data signal. The data comparison unit responds to the latch data signal to respectively compare the first data and the second data corresponding to the same channel to output multiple third data corresponding to the channels. The level select unit selects multiple voltage levels corresponding to the channels according to the third data.11-29-2012
20110181585SEMICONDUCTOR DEVICE AND DRIVING METHOD THEREOF, ELECTRO-OPTICAL DEVICE, AND ELECTRONIC DEVICE - A semiconductor device includes: a first transistor which is electrically connected between a capacitive element and a data line; a second transistor which is electrically connected between the first transistor and the capacitive element; and a driving unit. The driving unit drives the first and second transistors so that when the data voltage is applied to the capacitive element, both the first and second transistors are turned on, the second transistor is temporarily turned off, after a timing at which both the first and second transistors are turned on, and then turned on again, and the first transistor is turned off at the timing at which the second transistor is temporarily turned off or after the timing and before the second transistor is turned on again.07-28-2011
20100066720DATA DRIVER AND DISPLAY DEVICE - A data driver, for sequentially supplying image data of each pixel to a display panel having pixels arranged in a matrix layout, for every line, includes a frame memory for storing pixel data having multiple-bits per single pixel in single screen segments; and a structure for converting from multiple-bit pixel data for a single line segment read out in single line units from the frame memory, into single bit pixel data corresponding to a subframe, in single frame units, wherein pixel data for a single line that has been converted to single-bit data by the conversion structure is output simultaneously for a single line.03-18-2010
20100066719LIQUID CRYSTAL DISPLAY DEVICE, ITS DRIVING CIRCUIT AND DRIVING METHOD - The present invention relates to liquid crystal display devices employing the interlaced mode.03-18-2010
20120249518DISPLAY DEVICE - A display device includes a plurality of pixels arranged in matrix, a plurality of gate lines, a plurality of data lines, and a gate driver connected to the plurality of gate lines. The gate driver receives a first scan start signal, a second scan start signal and clock signals and outputs a gate-on voltage to each of the plurality of gate lines. The gate driver outputs the gate-on voltage to the plurality of gate lines such that the gate-on voltages do not overlap with each other when the gate driver receives the first scan start signal. The gate driver outputs the gate-on voltage to at least two of the gate lines at substantially the same time when the gate driver receives the second scan start signal.10-04-2012
20090058844DISPLAY DEVICE AND DRIVING METHOD FOR A DISPLAY DEVICE - A scan driver selects first four rows of pixels at a time and then sequentially selects second four rows of pixels for each row in double gate driving. A data driver supplies a tone voltage corresponding to black data to the first four row of pixels at a time and then sequentially supplies a tone voltage corresponding to display data to the second four rows of pixels.03-05-2009
20090058843Active Matrix Display Device - A two-terminal switching device provided on each of a plurality of pixel units and connected at a first terminal to a control electrode of a drive transistor, the two-terminal switching device being transferred to a conductive state according to magnitude of the voltage applied to a second terminal to supply the applied voltage to the control electrode; and a reverse bias voltage applying unit for adjusting the voltage applied to the second terminal and applying a reverse bias voltage to the drive transistor are provided.03-05-2009
20100271363ORGANIC LIGHT EMITTING DISPLAY AND DRIVING METHOD THEREOF - An organic light emitting display includes a scan driver for sequentially supplying a scan signal to scan lines; a data driver for supplying data signals to data lines when the scan signal is supplied; a timing controller for controlling the scan driver and the data driver and for supplying one of at least two clock signals to clock supply lines arranged parallel to the scan lines; and pixels positioned at crossing regions of the scan lines, the data lines and the clock supply lines. Each of the pixels includes an organic light emitting diode; a pixel circuit for controlling an amount of current supplied along a current path from a first power source to a second power source via the organic light emitting diode; and a control transistor on the current path and controlled by a corresponding clock signal of the at least two clock signals.10-28-2010
20100007650DISPLAY DEVICE - A display device includes an image signal processing unit to output a high-speed image signal with the aid of an image interpolation unit outputting a low-speed image signal. The display device includes an image signal processing unit to receive a primitive image signal having a first frequency and to output a 4× image signal having a second frequency. The second frequency is four times the first frequency. The display device includes a display panel displaying an image corresponding to the 4× image signal. The primitive image signal includes an (n−1)-th frame (where n is a natural number) and an n-th frame. The image signal processing unit includes a first image interpolation unit and second image interpolation unit, which receive the (n−1)-th frame and the n-th frame and output a 2× image signal including at least one interpolated frame.01-14-2010
20090322730DISPLAY DEVICE - Disclosed herein is a display device that allows a vertical scanning line to be shared between a plurality of rows without increasing the number of control lines or control signals, the display device including pixel circuits; vertical scanning lines; and horizontal scanning lines.12-31-2009
20090021509FLAT PANEL CRYSTAL DISPLAY EMPLOYING SIMULTANEOUS CHARGING OF MAIN AND SUBSIDIARY PIXEL ELECTRODES - A display system includes a display panel having a plurality of pixel units, each of the pixel units having first and second divided pixel parts; a first driver for applying a first gate signal to the first divided pixel part; and a second driver for applying a second gate signal to the second divided pixel part, wherein the first and second drivers are integrally formed in the display panel and apply the first and second gate signals to be at least partially time-overlapped through independent driving.01-22-2009
20120229444DISPLAY DEVICE - A display device includes a plurality of pixel each including a transistor, a pixel electrode connected to the transistor, and a reference electrode disposed so as to be opposite to the pixel electrode. The display device also includes data lines connected to the corresponding pixel circuits, a plurality of gate lines connected to the corresponding pixel circuits, gate circuits each of which sequentially outputs a gate signal, which is in a high voltage level during two or more horizontal periods in a first order or in a second order that is reverse to the first order, and a gate signal control circuit that controls each of the gate circuits and scans the gate lines. The gate signal control circuit controls each of the gate circuits to start to output the gate signals so as not to overlap periods when the gate signals are output to the adjacent gate lines.09-13-2012
20100328300PLASMA DISPLAY PANEL DRIVING DEVICE - A switching control circuit for a scan driving unit or a sustain driving unit of a plasma display panel driving device is disclosed. The switching control circuit includes a level shift circuit configured to generate a level-shifted signal by level shifting a control signal to a level referenced to a negative reference voltage, where the control signal was referenced to a ground voltage. The switching control circuit also includes a driver IC configured to amplify the level-shifted signal, and a switching circuit configured to perform a switching operation corresponding to the output signal.12-30-2010
20080297501ACTIVE MATRIX DISPLAY DEVICE - A display device includes a dynamic ratioless shift register which is operated in a stable manner and can expand the degree of freedom of design. In the dynamic ratioless shift register which is provided with thin film transistors having semiconductor layers made of p-Si on a substrate surface, a node which becomes the floating state is connected to a fixed potential through a capacitance element.12-04-2008
20110037759INFORMATION PROCESSING APPARATUS, AND SIGNAL TRANSMISSION METHOD - Provided is an information processing apparatus which includes a first module including a signal addition unit that generates an addition signal by adding a data signal to a clock, a signal subtraction unit that generates a subtraction signal by subtracting the data signal from the clock, a first signal transmission unit that transmits the addition signal through a first transmission line, and a second signal transmission unit that transmits the subtraction signal through a second transmission line, and a second module including a data component extraction unit that extracts a component of the data signal by subtracting the subtraction signal received through the second transmission line from the addition signal received through the first transmission line, and a clock component extraction unit that extracts a component of the clock by adding the subtraction signal received through the second transmission line to the addition signal received through the first transmission line.02-17-2011
20110037758CLOCK AND DATA RECOVERY CIRCUIT OF A SOURCE DRIVER AND A DISPLAY DEVICE - A clock and data recovery (CDR) circuit of a source driver includes a clock recovery unit and a delay locked loop unit. The clock recovery unit receives data bits and a clock code periodically inserted into the data bits through a clock embedded data channel in a display data mode, and is configured to generate a clock signal by detecting an edge of the clock code. The delay locked loop unit is configured to generate a multi-phase clock signal based on the clock signal in the display data mode.02-17-2011
20110037757MONITOR - A monitor includes a microprocessor, a switch control unit, and a switch detecting unit receiving a system voltage and sending the system voltage to the microprocessor. When the microprocessor detects the presence of the system voltage, and the microprocessor outputs a first control signal to the switch control unit, to control the monitor to be turned on. When the microprocessor detects the system voltage not being present, and the microprocessor outputs a second control signal to the switch control unit, to control the monitor to be turned off.02-17-2011
20110216057Timing Controller and Clock Signal Detection Circuit Thereof - The clock signal detection circuit includes a lock detection circuit, a duty cycle detection circuit, a first logic circuit, and a counter. The lock detection circuit detects whether an input clock signal and a feedback clock signal of a delay locked loop are in phase. The duty cycle detection circuit detects whether the duty cycle of the input clock signal is within a percentage range. The first logic circuit, electrically connected to the lock detection circuit and the duty cycle detection circuit, outputs a detecting result signal which is at first logic level when the input clock signal are in phase with the feedback clock signal, and the duty cycle of the input clock signal is within a percentage range. The counter outputs a lock detection signal which is at the first logic level when the detecting result signal has maintained at the first logic level for a first constant period of time.09-08-2011
20100253672LIQUID CRYSTAL DISPLAY DEVICE, AND TIMING CONTROLLER AND SIGNAL PROCESSING METHOD USED IN SAME - A liquid crystal display device is provided which is capable of reducing EMI (ElectraMagnetic Interference) noises while simultaneously responding to requirements for the high-speed transmission of image data, miniaturization and thinning of a signal processing board. A timing controller outputs, in accordance with an input data signal and input clock signal, a data line driving circuit controlling signal, internal data signal, internal clock signal to a data line driving circuit and outputs a scanning line driving circuit controlling signal to a scanning line driving circuit. The timing controller has a clock signal frequency setting mode in which a frequency of each of clock signals is set to a different value and the clock signals are supplied to the data line driving circuits and other data line driving circuits in one region and another region.10-07-2010
20100231578LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device is provided. A plurality of light emitting units includes a plurality of light emitting elements which are configured to emit light toward a liquid crystal panel through a light guide plate. The light emitting units are arranged in series at an interval in such a direction that the light emitting elements face a side surface of the light guide plate. A feeding circuit is configured to supply power to the light emitting units. A first switch is connected to both ends of at least one of the light emitting units such that the at least one of the light emitting units connected between the both ends is deactivated when the first switch is turned on. A second switch is connected to both ends of at least one of the light emitting units such that the at least one of the light emitting units connected between the both ends is deactivated when the second switch is turned on. A switching unit is configured to control an on/off state of each of the first and second switches according to a driving timing of the liquid crystal panel to subsequently switch the light emitting units to be deactivated.09-16-2010
20120139895TIMING CONTROLLER AND LIQUID CRYSTAL DISPLAY USING THE SAME - A timing controller and a Liquid Crystal Display (LCD) using the same are discussed. The timing controller according to an embodiment includes a reception unit which receives a video signal and a timing signal from a system; a control signal generation unit which generates a gate control signal and a data control signal with the timing signal, and outputs the gate control signal and the data control signal to a gate driver and a data driver, respectively; an image signal generation unit which realigns the video signal to output a realigned image signal; and a delay compensation unit which performs delay compensation for the realigned image signal with a circuit recombined according to a delay compensation value between each data drive Integrated Chip (IC) of the data driver and the image signal generation unit, and outputs the delay-compensated image signal to each data drive IC.06-07-2012
20100194738INTEGRATED CIRCUIT DEVICE, ELECTRO OPTICAL DEVICE AND ELECTRONIC APPARATUS - An integrated circuit device having a data line driving circuit and a position offset addition circuit that connects position offsets based on position offset setting values, wherein, among first pixel to p-th pixel of a plurality of pixels, a position offset register stores a first position offset setting value corresponding to the first pixel and a p-th position offset setting value corresponding to the p-th pixel among the first pixel to the p-th pixel; among first image data to p-th image data respectively corresponding to the first pixel to the p-th pixel, the position offset addition circuit processes a position offset correction value based on the first position offset setting value to the first image data, and processes a position offset correction value based on the p-th position offset setting value to the p-th image data among the first image data to p-th image data, to correct the position offsets.08-05-2010
20110157149APPARATUS AND METHOD OF RESETTING ELECTRONIC PAPER PANEL - There is provided an apparatus and method of resetting an electronic paper panel. An apparatus for resetting an electronic paper panel according to an aspect of the invention may include: a time control unit determining start and end times of a predetermined reset period on the basis of a frame synchronization signal and a data synchronization signal of an electronic paper panel, and determining start and end times of a predetermined pulse reset period within the reset period; and a driving circuit unit generating a pulse reset signal having pulses with a predetermined frequency during the pulse reset period, determined by the time control unit, and generating a display reset signal during the reset period to thereby supply the pulse reset signal and the display reset signal to the electronic paper panel.06-30-2011
20110157148CIRCUIT DRIVING FOR LIQUID CRYSTAL DISPLAY DEVICE - The present invention relates to a circuit for driving a liquid crystal display device in which no multi-flicker preventive signal FLK, but only single flicker preventive signal FLK, is used for reducing numbers of pins of a timing controller and a level shifter. The circuit for driving a liquid crystal display device includes a liquid crystal panel having a plurality of pixel regions for displaying an image, a timing controller for generating one flicker preventive signal and a plurality of clock signals and gate control signals to control driving timing of a gate driver, a gate pulse modulation unit for logically operating the one flicker preventive signal and the plurality of clock signals from the timing controller to generate a plurality of flicker preventive signals, and modulating a gate high voltage from the timing controller according to each of the plurality of flicker preventive signals generated thus to generate a plurality of modulated gate on voltages; a level shifter unit for changing the plurality of clock signals from the timing controller according to the plurality of modulated gate on voltages from the gate pulse modulation unit and a gate low voltage from the timing controller to generate a plurality of level shifted and modulated clock signals; and a gate driver for driving gate lines on the liquid crystal panel according to the a plurality of level shifted and modulated clock signals.06-30-2011
20080225036Liquid crystal display - A disclosed display includes a display panel including a first group of data lines and second group of data lines, a plurality of gate lines crossing the first and a second groups of data lines, and a plurality of picture cells arranged in a matrix. The display also includes a first source PCB coupled to first data integrated circuits (ICs) to supply first data voltages to the first group of data lines and a second source PCB coupled to second data ICs to supply second data voltages to the second group of data lines. The display further includes a timing controller having a single output port with a plurality of output pins which are configured to output video data to both the first and second data ICs, and to output a timing control signal to control both the first and second data ICs. In addition, the display includes a first connection cable coupling the single output port of the timing controller to at least one of the first and second source PCBs to transmit the video data and the timing control signal from the timing controller to the at least one of the first and second source PCBs. The first data ICs and second data ICs are configured to generate the first and second data voltages, respectively, based on the video data and the timing control signal.09-18-2008
20130176296DISPLAY APPARATUS AND DRIVING METHOD THEREOF - A display apparatus and driving method is provided. The display apparatus includes a power supply unit which supplies a DC voltage, a switch unit which is connected to the power supply unit in series and performs a switching operation according to different switching signals, a transformer unit which switches a voltage applied to primary winding to secondary winding according to the switching operation of the switch unit, a synchronous rectifying unit which performs synchronous rectification with respect to the voltage induced to the secondary winding, and an output unit which outputs the rectified DC voltage.07-11-2013
20110216058Display device and operating method thereof - A data driver connected to the display panel and applying an image data signal to the plurality of pixels; a scan driver connected to the display panel and applying an image scan signal to the plurality of pixels for the image data signal to be applied to the plurality of pixels, and a signal controller controlling the data driver and the scan driver. The data driver applies a data signal having a predetermined pattern to the display panel in a data porch period for adjusting synchronization between frames. The data signal applied during the data porch period may be determined in accordance with frames adjacent the data porch period.09-08-2011
20110273434Scan driving apparatus and driving method for the same - A scan driving apparatus, includes scan driving blocks, each including a first and a second input terminal where a frame start or a scan signal of an adjacent scan driving block is input during forward and backward direction driving, respectively, wherein each of the scan driving blocks transmits a first scan direction signal instructing forward scan driving to a first transistor adjusting a clock signal in accordance with a signal input to the first input terminal, transmits a second scan direction signal instructing backward scan driving to the first transistor in accordance with a signal input to the second input terminal, and outputs the clock signal as a corresponding scan signal, the even numbered ones of the scan driving blocks receive a first clock signal as the clock signal, the odd numbered ones of the scan driving blocks receive a second clock signal as the clock signal.11-10-2011
20110273433BOOST CONVERTER FOR LIQUID CRYSTAL DISPLAY - In order that a boost converter of an LDI can reduce electromagnetic interference by generating a panel driving voltage through the use of a variable frequency, while achieving a stable boosting operation using the same frequency whenever each frame begins, an oscillator generates an oscillation signal having a frequency, which varies in a predetermined pattern or hops in a random pattern around a center frequency, and generates an oscillation signal having a preset fixed frequency whenever each frame begins.11-10-2011
20110254829Wearable electronic device, viewing system and display device as well as method for operating a wearable electronic device and method for operating a viewing system - The present invention relates to a wearable electronic device, a viewing system comprising the wearable electronic device, a display device and methods for operating a wearable electronic device and a viewing system, respectively, wherein the wearable electronic device comprises a pair of glasses which can be controlled to change their optical state in a way to allow other and more flexible use of the equipment. The wearable electronic device for watching images comprises a left glass and a right glass which are adapted to change between a dark state and a transparent state of the glass and a controller operable to control the state of the glasses synchronous with a display of a plurality of images per second by a display device so that said left glass and said right glass are both in a dark state at the same time for a specific displayed image.10-20-2011
20100289792METHOD FOR DRIVING A TRI-GATE TFT LCD - A method for driving a tri-gate TFT-LCD includes providing a polarity converting common voltage. When polarity of the common voltage is converted, a first gate line is turned on for a source line to charge a first sub-pixel for a first write in duration. When the first gate line is turned off, a second gate line is turned on for the source line to charge a second sub-pixel for a second write in duration. When the second gate line is turned off, a third gate line is turned on for the source line to charge a third sub-pixel for the second write in duration. By adjusting the first write in duration the first sub-pixel can be fully charged, consequently improving the color deviation of the displayed image.11-18-2010
20120274624DISPLAY APPARATUS - A display apparatus includes a first substrate, a second substrate, a liquid crystal layer, and a common electrode. The first substrate includes a gate line, a data line insulated from the gate line while crossing the gate line, and a pixel electrode connected to the gate line and the data line. The second substrate faces the first substrate. The liquid crystal layer is interposed between the first substrate and the second substrate. The common electrode is disposed on at least one of the first substrate or the second substrate to form an electric field in cooperation with the pixel electrode. A data voltage applied to the pixel electrode has a polarity inverted every at least one frame with reference to a predetermined reference voltage, and a common voltage applied to the common electrode has a polarity inverted every at least two frames with reference to the reference voltage.11-01-2012
20110234578DISPLAY DRIVING APPARATUS, DISPLAY MODULE PACKAGE, DISPLAY PANEL MODULE, AND TELEVISION SET - A display driving apparatus according to an implementation of the present invention includes: a first delay circuit that generates latch control signals changing with different timings; a second delay circuit that generates falling delay signals and rising delay signals by delaying the latch control signals; a delay selection circuit that (i) selects the falling delay signals or the rising delay signals when pixel data for adjacent display output terminals have changed in different directions and (ii) selects the latch control signals when pixel data for adjacent display output terminals have changed in the same direction; and a step control circuit that drives the display output terminals with timings of the signals selected by the delay signal circuit.09-29-2011
20110310084Light Emitting Device and Method for Driving Thereof - An object of the present invention is to provide a display device consuming lower amounts of power. The display device determines whether or not video signals corresponding to all of pixels in one row of a plurality of pixels are equal to one another. In a case where the video signals corresponding to at least two pixels among the video signals corresponding to all of the pixels in one row of the plurality of pixels, are different from each other, video signals input to an image signal input line are sequentially output to a plurality of source signal lines in synchronization with a sampling pulse output from a shift register. On the other hand, when the video signals corresponding to all of the pixels in one row of the plurality of pixels are equal to one another, input of a start pulse to the source driver is stopped, and the video signals input to the image signal input line are simultaneously output to the plurality of source signal line.12-22-2011
20120019509ELECTROPHORETIC DISPLAY AND PICTURE UPDATE METHOD THEREOF - For picture updating, an electrophoretic display erases the ghost image and then continuously turns on a plurality of frames, each for changing only one gray level, so as to gradually adjust each of the pixels to a respective desired gray level, which can simplify and accelerate the picture updating, and reduce the content size of a lookup table. By incorporating with adjusting the time length of the frames, the lightness adjustment of the electrophoretic display can be simplified.01-26-2012
20120019508ELECTROPHORETIC DISPLAY AND PICTURE UPDATE METHOD THEREOF - An electrophoretic display includes a row driver connected to an electrophoretic display panel via a plurality of gate scanlines, and the row driver has a decoder. When the electrophoretic display is to update a picture that includes only a block to be changed, the decoder decodes a start position and an end position of the block to determine a portion of gate scanlines that are occupied by the block, and the row driver drives only the portion of gate scanlines. Therefore, the update time is shorter and the power consumption is less than that for a full update case.01-26-2012
20130194251PANEL DRIVING DEVICE HAVING A SOURCE DRIVING CIRCUIT, AND LIQUID CRYSTAL DISPLAY APPARATUS HAVING THE SAME - A liquid crystal display (LCD) apparatus includes: multiple differential amplifier stages each of which is operable to generate, according to a bias current and an input voltage, an output voltage having a magnitude and a slew rate that correspond respectively to the input voltage and a magnitude of the bias current, and serving as a data voltage of a corresponding pixel unit of an LCD panel; multiple current sources controllable to generate and provide a plurality of the bias currents to the differential amplifier stages, respectively; and a bias voltage generating unit connected electrically to the current sources in a current mirror configuration for generating an input bias current and controlling the current sources to generate the bias currents according to a latch pulse signal. The slew rate of the output voltage corresponds to a logic state of the input bias current.08-01-2013
20130201174LIQUID CRYSTAL DISPLAY - A display apparatus including a plurality of pixels arranged in association with a plurality of gate lines and a plurality of data lines crossing the gate lines, a data driver configured to drive the data lines, a gate driving unit configured to drive the gate lines in synchronization with a gate control signal, and a timing controller configured to control the data driver and the gate driving unit in response to an image signal and a control signal from an exterior. The timing controller outputs the gate control signal including a plurality of pulses respectively corresponding to the gate lines and an enable time of each pulse of the gate control signal is set according to a position of a corresponding gate line of the gate lines.08-08-2013

Patent applications in class Synchronizing means