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Waveform generator coupled to display elements

Subclass of:

345 - Computer graphics processing and selective visual display systems

345204000 - DISPLAY DRIVING CONTROL CIRCUITRY

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
345209000 Field period polarity reversal 104
345210000 Having three or more voltage levels 17
Entries
DocumentTitleDate
20100156867DIGITAL-TO-ANALOG CONVERTER, SOURCE DRIVING CIRCUIT AND DISPLAY DEVICE HAVING THE SAME - A digital-to-analog converter includes a voltage-to-current converter, a current-mode digital-to-analog converter and an operational amplifier. The voltage-to-current converter generates a first current signal, and the current-mode digital-to-analog converter generates a second current signal. The operational amplifier modulates a drain current in response to the second current signal and generates an output signal having an offset.06-24-2010
20100164924Bias control circuit, source driver, and liquid crystal display device - A bias control circuit includes a counter unit, a decoder, a level shifter, and a bias block. The bias control circuit provides plurality bits of first signal indicating information on a plurality of groups based on a number of scanning lines and a number of groups. The decoder decodes the first signal to provide plurality bits of second signal. The level shifter shifts a voltage level of the second signal to provide a bias resistor selection signal. The bias block provides respective bias voltages to the corresponding respective groups by respective resistances being selected in response to the bias resistor selection signal.07-01-2010
20120162170BIDIRECTIONAL SHIFT REGISTER AND IMAGE DISPLAY DEVICE USING THE SAME - A bidirectional shift register capable of performing a stable shift operation in both directions and an image display device using the same are provided. In forward shift operation, when reference point N06-28-2012
20090195525Signal Generator Producing Intersymbol Interference Effects on Serial Data - A device and method for generation of Intersymbol interference (ISI) effects on serial data by direct digital synthesis is described. The features of the present invention allow user to set parameters such as data rate, voltage amplitude, encoding scheme etc. as per requirements. An ISI parameter value is selected and applied to the serial data to produce ISI effects in the serial data. Alternatively according to another feature the patterns may be set as per industry standards.08-06-2009
20120169686TIMING CONTROLLER, DISPLAY APPARATUS INCLUDING THE SAME, AND METHOD OF DRIVING THE SAME - A timing controller includes a receiver, an internal clock generator, a first frequency converter, a first selector and a control signal generator. The receiver receives an image signal and a main clock signal having a first spread spectrum frequency from an external system, converts the main clock signal to a converted main clock signal and the image signal to a first converted image signal, and outputs the converted main clock signal as a first clock signal having a plurality of frequencies. The internal clock generator multiplies the frequencies of the first clock signal and generates a second clock signal having a frequency band within the multiplied frequencies of the first clock signal. The first frequency converter converts the second clock signal to a third clock signal having a second spread spectrum frequency. The first selector selects one of the second clock signal and the third clock signal in response to a first selection signal and outputs the selected one of the second clock signal and the third clock signal as a control clock signal. The control signal generator receives the control clock signal to generate a control signal synchronized with the control clock signal.07-05-2012
20110187688SEMICONDUCTOR DEVICE AND ELECTRONIC DEVICE INCLUDING THE SAME - A semiconductor device capable of inputting signals and power without the use of an FPC is provided. The semiconductor device includes a first substrate and a second substrate. A receiver antenna is provided on a surface side of the first substrate. The second substrate is provided with a transmitter antenna and an integrated circuit. The second substrate is attached on a back side of the first substrate. The receiver antenna and the transmitter antenna overlap with each other with the first substrate provided therebetween. Thus, the distance between the antennas can be kept constant, so that signals and power can be received highly efficiently.08-04-2011
20100141625DRIVING METHOD AND DRIVING CIRCUIT OF PLASMA DISPLAY PANEL HAVING A POTENTIAL BEING APPLIED TO AN ADDRESS ELECTRODE DURING A RESET PERIOD - In a driving method of a plasma display panel having a plurality of first electrodes provided so as to correspond to phosphors of a plurality of emitted light colors and having a plurality of second electrodes disposed so as to intersect with the first electrodes, the first electrodes for each of the emitted light colors that are provided so as to correspond to at least one of the phosphors of the emitted light colors among the first electrodes are brought into an electrically open state at the part of driving timings in a driving period. By doing so, gas discharge currents that flow through the first electrodes for each of the emitted light colors can be suppressed.06-10-2010
20110193841METHODS FOR DRIVING ELECTROPHORETIC DISPLAYS USING DIELECTROPHORETIC FORCES - A dielectrophoretic display has a substrate having walls defining a cavity, the cavity having a viewing surface and a side wall inclined to the viewing surface. A fluid is contained within the cavity; and a plurality of particles are present in the fluid. There is applied to the substrate an electric field effective to cause dielectrophoretic movement of the particles so that the particles occupy only a minor proportion of the viewing surface.08-11-2011
20110193839LEVEL SHIFTER FOR USE IN LCD DISPLAY APPLICATIONS - A level shifter for use in LCD display applications is provided which includes a group of separate channels each with a signal input and a signal output and with channel control circuitry supporting gate voltage shaping for improving image quality. The level shifter further has a number of flicker clock inputs. The channel control circuitry of each particular channel in the group comprises logic circuitry combining all of said flicker clock inputs with the signal input of the particular channel and signal inputs form other channels into a gate voltage shaping enable signal for the control circuitry of the particular channel. With this configuration it is possible to use the same level shifter IC with only one flicker clock signal for all phases, regardless of how many, without the need for an additional synchronization signal, or multiple flicker clock signals as is conventional. The level shifter automatically determines which input signal needs to be modified for the gate voltage shaping when the active portion of the flicker clock signal is detected.08-11-2011
20090122042PLASMA DISPLAY DEVICE AND METHOD FOR DRIVING PLASMA DISPLAY PANEL - One field period includes a plurality of subfields each having an initialization period in which a gradually descending sloping waveform voltage is applied to a scan electrode, a writing period in which a negative scan pulse voltage is applied to the scan electrode, and a sustain period. A sloping waveform voltage is generated by switching a minimum voltage in the sloping waveform voltage between a first voltage and a second voltage that has a lower voltage value than that of the first voltage. The ratio in one field period of a subfield in which an initialization is carried out by the sloping waveform voltage whose minimum voltage is the second voltage is increased when a temperature of the plasma display panel is determined to be low as compared with when the temperature is determined to be not low.05-14-2009
20090122040DRIVE DEVICE AND DRIVE METHOD - A first generation section (05-14-2009
20130076713DISPLAY APPARATUS AND METHOD OF DRIVING THE SAME - A display apparatus includes a micro-shutter including first and second electrodes, a latch circuit including first and second input nodes, and first and second output nodes to receive an operation voltage and a common voltage, a capacitor including a first electrode and a second electrode applied with a shutter voltage, a first switching device applying a data signal to the first electrode of the capacitor in response to a gate signal, and a second switching device applying the voltage of the first electrode of the capacitor to the first input node of the latch circuit in response to an update voltage.03-28-2013
20130076714METHOD FOR DRIVING DISPLAY PANEL AND DISPLAY APPARATUS APPLYING THE SAME - A method for driving a display panel and a display apparatus applying the same are provided. The method includes driving all lines of the display panel in a first scanning section of a section to display one frame, and driving one of an even line and an odd line of the display panel in a second scanning section of the section to display the one frame. Accordingly, a crosstalk phenomenon in the display apparatus is removed and image quality of a 3D stereoscopic image is improved.03-28-2013
20100118011DISPLAY SYSTEM - A display system includes a display device, a driving circuit, a flexible printed circuit (FPC), a charge pump circuit and a control circuit. The driving circuit is disposed on the display device, for driving the display device. The FPC is externally coupled to the display device. The charge pump circuit is disposed on the FPC, for generating at least an output voltage to the driving circuit. The control circuit is disposed on the display device and coupled to the driving circuit, for generating a plurality of control signals to control the charge pump circuit. The charge pump circuit has a plurality of control ports coupled to the control circuit for receiving the control signals generated from the control circuit, respectively.05-13-2010
20100073341ELECTRO-OPTICAL DEVICE, DRIVING METHOD THEREOF, AND ELECTRONIC APPARATUS - An electro-optical device includes a display panel having a switching transistor and a pixel electrode that are disposed in correspondence with an intersection of a scanning line and a data line, an opposing electrode that faces the pixel electrode, and an electro-optical layer that is pinched between the pixel electrode and the opposing electrode, a detection unit that detects a current flowing through the electro-optical layer, and a control unit wherein, when a voltage of a high electric potential is defined to have the positive-polarity and a voltage of a low electric potential is defined to have the negative polarity with reference to the opposing electrode electric potential applied to the opposing electrode as a reference, a data signal of the positive polarity and a data signal of the negative polarity are alternately supplied to the pixel electrode through the data line.03-25-2010
20130082995DISPLAY, SOURCE DRIVER OF DISPLAY AND DRIVING METHOD THEREOF - Disclosed herein are a display, a source driver of the display and a method for driving the same. The source driver includes a determining unit. The determining unit is configured to temporarily store data in response to a latch enable signal, to output a plurality of digital data values continuous in time sequence, and to sequentially convert a first digital data value and a second digital data value of the digital data values to a first analog signal and a second analog signal, respectively, and to compare the first digital data value with the second digital data value. When the first digital data value and the second digital data value are the same, the determining unit continuously outputs the first analog signal and the second analog signal.04-04-2013
20130082994DEVICES AND METHODS FOR KICKBACK-OFFSET DISPLAY TURN-OFF - Methods and devices employing circuitry for display turn-off that offsets the effect of kickback voltage are provided. In one example, a method may include determining an amount of kickback voltage that is expected to occur in pixels of the electronic display during shutdown of the display, supplying a common voltage output to a common electrode of a pixel of the electronic display, and supplying an activation signal to the pixel to activate the pixel. The method may also include supplying a data signal to a pixel electrode of the pixel. The data signal may be substantially equal to the sum of the common voltage output and the determined kickback voltage. The method may include removing the activation signal from the pixel to store the data signal in the pixel to reduce the effect of kickback voltage on the pixel electrode of the pixel during shutdown of the electronic display.04-04-2013
20130033472METHOD OF PROGRAMMING DRIVING WAVEFORM FOR ELECTROPHORETIC DISPLAY - A method of programming a driving waveform for an electrophoretic display (EPD) is provided, wherein the driving waveform includes several single pulses selected from K candidate pulse widths W02-07-2013
20130038586LIQUID CRYSTAL DISPLAY DEVICE AND METHOD FOR IMPROVING DISPLAY QUALITY OF THE SAME - A liquid crystal display device including a liquid crystal panel, a gate driver unit, a source driver unit and a clock generator and a method thereof are disclosed to improve display quality. The liquid crystal panel comprises a pixel array for displaying images. The gate driver unit for generating plural driving signals drives the pixel array. The source driver unit for generating plural driving signals drives the data of the image signals. The clock generator electrically coupled to the gate driver unit generates clock signals to control an operation of the gate driver unit. A bright line is likely to occur in an image area since the last two gate driver output lines of the last two stages are not coupled to the liquid crystal panel. A solution with the duty cycle of a clock signal generated by the clock generator is adjusted to solve the aforementioned problem.02-14-2013
20100045644METHOD OF DRIVING DISPLAY DEVICE, CIRCUIT OF DRIVING DISPLAY DEVICE USING THE SAME AND DISPLAY DEVICE HAVING THE SAME - In a method of driving a display device and a driving circuit using the driving method, when a current needed to display an image corresponding to one frame is calculated based on a data signal, a second vertical start signal delayed by a first time interval more than a first vertical start signal based on the calculated current. A first gate signal is sequentially output in response to the first vertical start signal, and a display data voltage obtained from the data signal is output during a high period of the first gate signal. A second gate signal is sequentially output in response to the second vertical start signal, and a black data voltage is output during a high period of a second gate signal. Thus, the current applied to a display part is controlled, thereby reducing power consumption and improving moving image.02-25-2010
20100045643METHOD AND APPARATUS FOR ANALYZING CIRCUIT OPERATIONS - A method and apparatus for viewing and/or analyzing the operations and logical states of an integrated circuit. The logical state of various flip-flops within the ASIC may be determined at a specified time. The embodiment may store these flip-flop states in a computer-readable data structure, such as a file or database. By repeating this process and incrementing or decrementing the time with each repetition, a more complete picture of the ASIC's operation may be captured. Additionally, the embodiment may graphically display the flip-flop states, for example as a graph or waveform.02-25-2010
20100045645BACKLIGHT ASSEMBLY HAVING EXTERNAL ELECTRODE FLUORESCENT LAMP, METHOD OF DRIVING THEREOF AND LIQUID CRYSTAL DISPLAY HAVING THE SAME - A backlight assembly has a lamp driving device for driving external electrode fluorescent lamps (EEFLs) parallel connected each other. The lamp driving device includes a power switch transistor, a diode, an inverter and a PWM controller. The transistor converts external DC power signal into pulse power signal based on switching signal, the diode prevents rush current from flowing into the transistor. The inverter converts the pulse power signal into AC power signal, raises voltage level of the AC power signal, and provides the lamps with the raised AC power signal. The PWM controller is activated by external on/off signal to provide the transistor with the switching signal so as to regulate voltage level of the AC power signal. The EEFLs can maintain a constant current level, and the backlight assembly can have characteristics of uniform luminance, high luminance and high heat efficiency.02-25-2010
20130135269TWO STATE THREE ELECTRODE DRIVE SCHEME - This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for driving electromechanical display devices that suffer from adhesion forces. In one aspect, a method for driving a display element is provided that includes applying a first series of voltages to a first electrode and applying a second series of voltages from a set of voltage levels to a second electrode to selectively place a movable layer into an actuated state or un-actuated state based on a voltage difference between the first and second electrodes. The method further includes applying a third series of voltages levels from the set of voltage levels to a third electrode. The third series of voltage levels are applied to the third electrode such that a non-zero voltage exists between the third and second electrodes during a release time period where a desired state is the un-actuated state.05-30-2013
20100103152SOURCE DRIVING CIRCUIT WITH OUTPUT BUFFER - A source driving circuit adapted to drive a display panel is provided herein. The source driving circuit includes a first output buffer and a second output buffer responsible for enhancing signals with different polarities respectively. As for the first output buffer, the first output buffer includes a first differential input stage, a first output stage and a second output stage. The first output stage includes a first level adjustment circuit and a first self-bias providing circuit. The first level adjustment circuit provides a first level voltage according to input signals received by the first differential input stage, such that the second output stage thereby provides a first charge current and a second charge current to output a first output signal based on the first level voltage. The first self-bias providing circuit provides a first biased voltage associated with one input signal to control the first level adjustment circuit to operate.04-29-2010
20130088470LIQUID CRYSTAL DISPLAY HAVING ADAPTIVE PULSE SHAPING CONTROL MECHANISM - A liquid crystal display having adaptive pulse shaping control mechanism includes a first gate driver for providing a first gate signal based on a first modulation voltage, a second gate driver for providing a second gate signal based on a second modulation voltage, a first pixel array unit for illustrating image according to the first gate signal, a second pixel array unit for illustrating image according to the second gate signal, a timing controller for performing a pulse compare operation over the first and second gate signals so as to generate a first shaping control signal and a second shaping control signal, a first gate pulse modulation unit for providing the first modulation voltage according to the first shaping control signal, and a second gate pulse modulation unit for providing the second modulation voltage according to the second shaping control signal.04-11-2013
20130088471LIGHT SOURCE DEVICE AND IMAGE DISPLAY DEVICE - The light source device includes a first light source component, a fluorescent component, a first illuminance homogenizer, and a relay optical system. The first light source component emits laser light. The fluorescent component has a phosphor. The phosphor is excited by laser light. The first illuminance homogenizer converts the laser light into laser light showing a spatially uniform light intensity distribution. The first illuminance homogenizer is disposed between the first light source component and the fluorescent component. The relay optical system guides laser light emitted from the first illuminance homogenizer to the fluorescent component. The relay optical system is disposed between the first illuminance homogenizer and the fluorescent component.04-11-2013
20100103153Image display apparatus - A plurality of scanning signal lines GLn divided into groups, and each group is made up of three scanning signal lines GLnR, GLnG and GLnB, and a plurality of pixels are divided into pixel blocks, and each pixel block is made up of three pixels PR (n, m), PG (n, m) and PB (n, m) respectively connected to the scanning signal lines GLnR, GLnG and GLnB. These pixels PR (n, m), PG (n, m) and PB (n, m) are connected to a common data signal line SLm. To the scanning signal lines GLnR, GLnG, GLnB, scanning pulses are sequentially outputted to the scanning signal lines GLnR, GLnG and GLnB from shift registers SRnR, SRnG and SRnB, and video signals for R, G and B are outputted to the data signal line SLm from a driver IC by time division.04-29-2010
20120218240PLASMA DISPLAY PANEL DRIVING METHOD AND PLASMA DISPLAY DEVICE - Stable address discharge is caused while securing a sufficient voltage setting margin, and an image of high quality is displayed on a plasma display panel. For this purpose, in the selective initializing operation, first discharge is caused by applying first voltage to the sustain electrode and applying up-ramp waveform voltage to the scan electrode. Next, second discharge is caused by applying down-ramp waveform voltage to the scan electrode. Next, third discharge is caused by applying positive rectangular waveform voltage to the scan electrode. Next, fourth discharge is caused by applying second voltage higher than the first voltage to the sustain electrodes and applying down-ramp waveform voltage to the scan electrode. The length of applying time of the positive rectangular waveform voltage to the scan electrode is changed based on the number of sustain pulses occurring in the sustain period of the immediately preceding subfield.08-30-2012
20090040206Plasma Display Device - A driving method of a plasma display panel which performs image display using a plurality of sub-fields. In a sustain discharge period, a first sustain discharge waveform and a second sustain discharge waveform are applied, the second sustain discharge waveform having a timing of voltage clamping at a rising edge of a pulse which is earlier than that of the first sustain discharge waveform. In a predetermined sub-field in one frame, the first sustain discharge waveform is repeatedly applied without applying the second sustain discharge waveform, and in other sub-fields, the first sustain discharge waveform and the second sustain discharge waveform are repeatedly applied.02-12-2009
20110057910DRIVING DISPLAYS - A method of driving a display, wherein the display comprises a layer of electroluminescent material (EL) and a layer of physically-stabilised liquid crystal (LC) wherein the layers of EL and LC are powered by a common set of electrodes. The method comprises driving the common electrodes with a voltage waveform which is substantially a truncated triangular waveform.03-10-2011
20120306834FIELD EFFECT TRANSISTOR, DISPLAY ELEMENT, IMAGE DISPLAY DEVICE, AND SYSTEM - A disclosed field effect transistor includes a gate electrode to which a gate voltage is applied, a source electrode and a drain electrode for acquiring a current in response to the gate voltage, an active layer provided adjacent to the source electrode and the drain electrode, the active layer being formed of an n-type oxide semiconductor, and a gate insulator layer provided between the gate electrode and the active layer. In the field effect transistor, the n-type oxide semiconductor is formed of an n-type doped compound having a chemical composition of a crystal phase obtained by introducing at least one of a trivalent cation, a tetravalent cation, a pentavalent cation and a hexavalent cation.12-06-2012
20090128532METHOD FOR DRIVING A PLASMA DISPLAY PANEL - A method for driving a plasma display panel is disclosed. The driving method alternately applies sustain pulses to a scanning electrode and a sustain electrode during a sustain period in a selective writing subfield followed by a selective erasing subfield. The driving method applies a first voltage to an address electrode in the selective writing subfield, the first voltage applied to the address electrode except a time when at least a last pair of sustain pulses is alternately applied to the scanning and sustain electrodes during the sustain period. The driving method applies a second voltage to the address electrode during the time when the last pair of sustain pulses is alternately applied to the scanning and sustain electrodes in the selective writing subfield. The driving method applies a second voltage to the address electrode during a sustain period in the selective erasing subfield.05-21-2009
20110063271APPARATUS AND METHOD FOR DRIVING LIQUID CRYSTAL DISPLAY DEVICE - An apparatus and method for driving a liquid crystal display (LCD) device is disclosed, to prevent error of a timing controller and to prevent the defective image on a frequency conversion, the apparatus comprising a liquid crystal display part to display images, a driver to drive the liquid crystal display part, a graphic system to output frequency-conversion prediction information in accordance with a frequency-conversion signal, and perform frequency conversion of a plurality of synchronizing signals, and a timing controller to control the driver to display video data according to a previous frame during the frequency conversion, in response to the frequency-conversion prediction information.03-17-2011
20130162614Universal 3D Shutter Glasses - A method of operating 3D glasses having left and right shutters including receiving a synchronization signal from a display device, determining a protocol of the display device based upon the received synchronization signal, and operating the left and right shutters of the 3D glasses using the determined protocol.06-27-2013
20090237383DRIVING CIRCUIT FOR ELECTROPHORETIC DISPLAY DEVICE, ELECTROPHORETIC DISPLAY DEVICE, METHOD FOR DRIVING THE SAME, AND ELECTRONIC APPARATUS - In an electrophoretic device including a display including pixels with electrophoretic particles between pixel and common electrodes, a pixel-switching element, a memory holding an image signal from the pixel-switching element, and a switch connecting one of first and second control lines to the pixel electrode according to a signal output according to the image signal from the memory, a driving circuit includes a holding voltage unit supplying a holding voltage holding the image signal in the memory, a pixel potential unit supplying a first pixel potential to the first control line and a different second pixel potential to the second control line, a common potential unit supplying a common potential to the common electrode, and a control unit controlling the holding potential unit, the common potential unit, and the pixel potential unit to stop the holding potential after the first and second pixel potentials and common potential are stopped.09-24-2009
20090046086Method 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.02-19-2009
20090046085Display apparatus, driving method for display apparatus and electronic apparatus - Disclosed herein is a display apparatus, including, a pixel section, a plurality of scanning lines, a plurality of signal lines, and a driving circuit.02-19-2009
20090295770LEVEL SHIFTER USING LATCH CIRCUIT AND DRIVING CIRCUIT INCLUDING THE SAME IN DISPLAY DEVICE - A level shifter includes a switching unit, a power supply circuit, and a latch circuit. The switching unit selectively outputs an input signal to a first output terminal in response to a first control signal. The power supply circuit generates a variable voltage, which changes when level shifting is performed, in response to a plurality of second control signals. The latch circuit performs the level shifting in response to the input signal selectively output by the switching unit and the variable voltage. Since the level shifter can perform level shifting using the latch circuit, it can be made in compact size and it operates with low power. Also, the level shifter sets the transition periods of the first control signal and the variable voltage not to overlap each other, thereby decreasing signal distortion.12-03-2009
20120113075DISPLAY DEVICE AND METHOD FOR DRIVING DISPLAY DEVICE - An embodiment of the present invention provides a display device which prevents effective voltages applied to liquid crystal from differing between positive and negative polarities, even when a generation timing of a timing signal is shifted. In at least one example embodiment, a driving signal has an electric potential waveform where one frame period is made up of first period, second period, third period, and fourth period. In first frame, each of a Low level in the first period and a Low level in the third period is lower in electric potential than a Low level in the second period. In second frame, each of a High level in the first period and a High level in the third period is higher in electric potential than a High level in the second period.05-10-2012
20130162612ELECTRONIC DEVICE AND METHOD FOR SWITCHING BETWEEN FIRST DISPLAY UNIT AND SECOND DISPLAY UNIT - An electronic device includes a first display unit for displaying static images, a second display unit for displaying dynamic images, a gate driver connected to the first display unit and the second display unit; a source driver connected to the first display unit and the second display unit; a storage unit for storing visual content; and a processor. The processor is operative to determine at least one feature of the visual content; and control the gate driver and the source driver to selectively enable at least one of the first display unit and the second display unit, based on the at least one determined feature, to display the visual content.06-27-2013
20130162613Signal Converter Circuit, Display Device, and Electronic Device - To suppress an adverse effect of change in held data in a sample-and-hold circuit as a result of increase in operation speed on a generated parallel data signal. A signal converter circuit includes a first sample-and-hold circuit and a second sample-and-hold circuit each of which has a function of extracting and holding part of a serial data signal as a data in accordance with a sampling control signal and has a function of generating a data signal which is one of data signals of a parallel data signal by using the held data and outputting the data signal. The second sample-and-hold circuit includes a switch which has a function of selecting whether the potential of the data of the second sample-and-hold circuit is set to a reference potential or not in accordance with the sampling control signal of the first sample-and-hold circuit.06-27-2013
20120081343Display Array of Display Panel - A display array organization used in a display panel is provided. The display array includes a data line, a first scan line, a second scan line, a first pixel electrode, a second pixel electrode, a front-end switch and an intermediary switch. The first pixel electrode is connected to the data line with the front-end switch, and the second pixel electrode is connected to the first pixel electrode with the intermediary switch. The operation of the front-end switch and intermediary switch are controlled by the first and second scan line respectively. When only the front-end switch is activated, the first pixel electrode can receive the data signal from the data line. When both the front-end and intermediary switches are activated, the second pixel electrode can receive a data signal from the data line.04-05-2012
20100171727Output Buffer Circuit with Enhanced Slew Rate - An output buffer circuit with enhanced slew rate is disclosed. A first and a second slew-rate enhancing transistor are configured to enhance the slew rate of the source transistor and the sink transistor of an output stage. A first control circuit and a second control circuit turn off the first and the second slew-rate enhancing transistors during the static state, and turn on the first and the second slew-rate enhancing transistors during the transition.07-08-2010
20090146984PLASMA DISPLAY APPARATUS - The present invention relates to a plasma display apparatus. The plasma display apparatus of the present invention includes a plasma display panel having a plurality of scan electrodes and a sustain electrode formed in a front substrate, and drivers supplying driving signals to the plurality of electrodes. The plurality of scan electrodes is divided into two or more groups, each comprising first and second groups. In a reset period of at least one of a plurality of subfields constituting one frame, during a set-up period, voltages supplied to scan electrodes of at least one of the first and second groups gradually rise from a first voltage to a second voltage, and a voltage supplied to the sustain electrode gradually rises from a third voltage to a fourth voltage. In accordance with the plasma display apparatus according to the present invention, in driving a high-resolution plasma display panel such as Full HD panels, reset signals that gradually rise and fall are supplied to the scan electrodes and the sustain electrodes at the same time. Accordingly, an erroneous discharge in an address period can be reduced, and the picture quality of a display image can be improved.06-11-2009
20110298767LIQUID CRYSTAL DISPLAYS - Electronic apparatus, systems, and methods to operate a liquid crystal display provide a mechanism that can be used to address image sticking on the display. The mechanism may be provided in the form of an arrangement of a liquid crystal and an insulating material, where the arrangement has a decay time constant that is comparable to or less than a maximum time visually acceptable for image sticking to persist. Additional apparatus, systems, and methods are disclosed.12-08-2011
20120086685THIN FILM TRANSTISTOR ARRAY PANEL AND LIQUID CRYSTAL DISPLAY - A liquid crystal display includes a first gate line; a common voltage line separated from the first gate line; a data line insulated from and crossing the first gate line and the common voltage line; a first switching element connected to the first gate line and the data line; a second switching element connected to the first gate line and the data line; a first liquid crystal capacitor connected to the first switching element; a second liquid crystal capacitor connected to the second switching element; a third switching element connected to the first switching element; an assistance capacitor connected to the third switching element and the common voltage line; and a shielding electrode extending in the same direction as the first gate line and connected to the first switching element.04-12-2012
20110285683SYSTEM AND METHOD FOR CHOOSING DISPLAY MODES - This disclosure provides apparatus, systems, and methods for updating display devices. In one aspect, a line time addressing mode may be used to update the display by changing the amount of time that a common line has to address a display element. A shorter line time results in a higher frame rate, but may result in increased display errors. Therefore, an appropriate line time addressing mode may be selected based on the update rate of images to be displayed.11-24-2011
20120062534COMPENSATION CIRCUITRY OF GATE DRIVING PULSE SIGNAL AND DISPLAY DEVICE - A compensation circuitry of gate driving pulse signal is adapted to receive a gate driving pulse signal and includes a pre-processing circuit, a peak detector, a discharge circuit, a voltage buffer and a charge pump circuit. The pre-preprocessing circuit performs a pre-processing operation to the gate driving pulse signal to adjust a voltage thereof. The pre-processed gate driving pulse signal then is transmitted to the peak detector for obtaining a peak voltage after a charging operation, and also is transmitted to the discharge circuit to determine whether to enable the discharge circuit so that providing the peak detector with a discharge loop when the discharge circuit is enabled. The charge pump circuit acquires the peak voltage through the voltage buffer and then modulates a waveform of the gate driving pulse signal according to the peak voltage. A display device using the above compensation circuitry also is provided.03-15-2012
20100123697Display Device and Driving Method Thereof - A display device and a method of driving the display device are provided. The threshold voltage of a driving transistor is compensated such that even when the threshold voltage of the driving transistor is varied, the emission of light with respect to a predetermined data voltage occurs with a predetermined luminance, based on a diode-connected compensation transistor and a plurality of switching transistors.05-20-2010
20110298768APPARATUS AND METHOD FOR DRIVING DISPLAY DEVICE - A driving apparatus of a display device, comprises a signal controller which receives an image signal and an input control signal from an outside, a signal error judgment unit which judges an error of the input control signal, and a data driver and a gate driver which receive a signal output from the signal controller, wherein the signal error judgment unit does not judge an error of the input control signal during a predetermined error judgment holding time after the error of the input control signal is generated and judges the error of the input control signal at the substantially a same time as when the error judgment holding time is terminated when the error of the input control signal is continued after the predetermined error judgment holding time.12-08-2011
20090201274Timing Signal Generating Circuit, Electronic Apparatus, Display Apparatus, Image-Reception Apparatus, and Driving Method - A timing signal generating device for a matrix-type display apparatus is disclosed, conducive to reduction of power consumption, the matrix-type display apparatus including the timing signal generating device, and a driving method thereof. In at least one embodiment, a timing signal generating apparatus provided in an active-matrix liquid crystal display apparatus includes a horizontal direction counter and a vertical direction counter for counting a clock number; and a horizontal counter cessation circuit and a vertical counter cessation circuit for stopping the horizontal direction counter and the vertical direction counter at a predetermined timing. With this structure, at least one embodiment of the present invention achieves reduction in power consumption in the liquid crystal display apparatus.08-13-2009
20110164014DISPLAY DRIVE SWITCH CONFIGURATION - An apparatus and method for driving a display a display. Two switches for each common line are used to couple the common line to a respective first and second hold voltage supply lines. A third switch for each common line is used to couple the common line to a drive line. A waveform generator is used to generate the driving waveform on the drive line.07-07-2011
20110292011PLL, DISPLAY USING THE SAME, AND METHOD FOR TIMING CONTROLLER TO GENERATE CLOCK USING THE SAME - Provided are a phase-locked loop (PLL) receiving an input clock and generating a clock, a display using the PLL, and a method for a timing controller to generate a clock using the PLL. The display includes a timing controller configured to generate a first clock using a PLL, insert the first clock into data, and transmit the data into which the first clock is inserted, transmission lines configured to transfer the data into which the first clock is inserted, and data-driver integrated circuits (ICs) configured to receive the data into which the first clock is inserted, separate the first clock from the data, and drive data lines of a liquid crystal panel on the basis of the first clock and the data. The PLL includes a phase detector configured to generate a DC error corresponding to a phase difference between an input clock and the first clock, a plurality of voltage-controlled oscillators (VCOs), a VCO selector configured to select a VCO having a frequency operating range, which is a range from the highest oscillation frequency of the VCO to the lowest oscillation frequency, including a frequency of the first clock from among the plurality of VCOs with reference to the DC error, and an inductor/capacitor (LC) resonant circuit connected with the selected VCO, including a plurality of fixed capacitors, and configured to perform coarse frequency tuning of the selected VCO.12-01-2011
20110169796DRIVE CIRCUIT AND LIQUID CRYSTAL DISPLAY USING THE SAME - A liquid crystal display includes a liquid crystal panel, a drive circuit, and a power circuit. The drive circuit includes a gate driver, a timing control circuit, and a wave signal generation circuit. The timing control circuit sends a timing control signal to the gate driver and the wave signal generation circuit. The wave signal generation circuit generates a control signal according to the timing control signal, and generates a wave signal according to the control signal. The gate driver generates scan signals according to the timing control signal and the wave signal. Before the voltage of the scan signal changes from a maximum voltage to a minimum voltage, the voltage of the scan signal decreases to an invariable middle voltage that is between the minimum voltage and the maximum voltage during a fall time of the scan signal.07-14-2011
20100091000LIQUID CRYSTAL DISPLAY - A liquid crystal display (LCD) device includes: a liquid crystal panel including gate lines and data lines crossing to define a plurality of pixels; a timing controller for generating a gate control signal and a data control signal for driving each pixel by using signals inputted from a system and realigning pixel data from the system to output the same; a gate driver for driving the gate lines by using the gate control signal; a data driver for supplying pixel data to a corresponding data line according to the gate control signal; and a reset signal generating unit for generating a reset signal upon receiving input power from the system, and supplying the reset signal to the timing controller, wherein the reset signal generating unit includes: a first resistor connected to an input power input terminal to which input power is applied from the system; a Zener diode having a cathode connected to the first resistor and forming a first node between the cathode and the first resistor; a second resistor connected between an anode of the Zener diode and a reset signal output terminal; a third resistor connected between the reset signal output terminal and a ground; and a capacitor connected between the first node and a ground.04-15-2010
20100134458LIQUID CRYSTAL DISPLAY DEVICE AND METHOD AND CIRCUIT FOR DRIVING THE SAME - In one embodiment of the present invention, a liquid crystal display device includes a plurality of data signal lines; a plurality of scanning signal lines intersecting orthogonally with the plurality of data signal lines; pixel electrodes each provided at each of intersections of the plurality of data signal lines and the plurality of scanning signal lines; and a counter electrode, the plurality of data signal lines divided into sets each including data signal lines that are provided next to one another so as to respectively correspond to primary colors (R, G, and B) constituting a display color, the data signal lines in each set being connected to one of output signal lines to which data signals corresponding to the primary colors are supplied during a single horizontal scanning period by time division, the data signals supplied to the output signal lines being switched, the counter electrode being subjected to application of a voltage being varied during at least one horizontal scanning period. This provides an active matrix liquid crystal display device that is driven by the SSD method and that is capable of independently adjusting respective luminances of R, G, and B.06-03-2010
20110261041IMAGE DISPLAY SYSTEMS AND METHODS FOR DRIVING PIXEL ARRAY - An image display system and a pixel array driving method thereof. The image display system has a source driver having a first and a second digital-to-analog converter and a first and a second switching circuit. The first digital-to-analog converter converts an N-bit digital code to a first analog signal, where N is a positive integer. The second digital-to-analog converter converts a K-bit digital code to a second analog signal, where K is a positive integer and is smaller than N. The first switching circuit controls coupling between a first display data, a second display data and the first and second digital-to-analog converters, and, the second switching circuit controls connections between the first and second analog signals and a first and a second operational amplifier. The first and second operational amplifiers are coupled to a first and a second data line of a pixel array, respectively.10-27-2011
20090315871IMAGE DISPLAY SYSTEM, IMAGE SIGNAL TRANSMITTER AND IMAGE DISPLAY UNIT - An object of the present invention is to realize a transmission distortion correction system for allowing an image signal including a plurality of picture signals to be corrected, and to realize an image signal transmitter and an image display unit. The image display unit of the present invention includes: a second reference signal generation means for generating a second reference signal similar to a first reference signal regarding the image signal in which the first reference signal is inserted into each of the plurality of picture signals by the image signal transmitter; a plurality of waveform equalizers provided that correspond to the plurality of picture signals and that include a filter circuit capable of setting a characteristic thereto; and a control portion for inputting the plurality of picture signals, analyzing a characteristic of a transmission path between the image signal transmitter and the image display unit upon detecting the first reference signal in the input picture signals by comparing the first reference signal with the second reference signal, and setting a characteristic inverse to the analyzed transmission path characteristic to a filter circuit of the waveform equalizers that correspond to the input picture signals.12-24-2009
20090153535PLASMA DISPLAY DEVICE AND PLASMA DISPLAY PANEL DRIVE METHOD - Provided is a technique of a PDP device capable of preventing error display arising from changes in discharge characteristics in a reset period particularly due to a long-period operation. In the PDP device, a slope of a slope waveform in the reset period is changed corresponding to operation time of the PDP device. And, the slope waveform is made to have a configuration having a stepwise plurality of slopes in a predetermined reset period. For example, when the operation time becomes long, rising and falling slope waveforms of a reset waveform are configured by two steps, and a first slope thereof is made steeper than a slope before the change, and a second slope is made gentle than the slope before the change. When the operation become longer, the first slope is made further steeper and the subsequent second slope is made further gentler.06-18-2009
20100007639METHOD OF DRIVING A DISPLAY PANEL AND DISPLAY APPARATUS FOR PERFORMING THE METHOD - In a method of driving a display panel and a display apparatus for performing the method, a first pixel equipped in the display panel is driven with a first data voltage to which a first gamma curve is applied and a second pixel adjacent to the first pixel is driven with a second data voltage to which a second gamma curve is applied during an (N)-th frame, wherein N is a natural number. The first pixel and the second pixel is driven with a third data voltage to which a third gamma curve having a luminance between the first gamma curve and the second gamma curve is applied during a (N+1)-th frame.01-14-2010
20100123698DISPLAY DEVICE INCLUDING IMAGE SIGNAL PROCESSOR AND IMAGE INTERPOLATION CHIP - A display device includes a display panel having pixels and divided into first and second display regions; first and second image interpolation chips which receive an original image signal and output interpolated ¼, ½, and/or ¾ frames inserted between a previous (n−1)-th frame and a current n-th frame of the original image signal; a first timing unit which receives the interpolated ¼, ½, and/or ¾ frames from the first image interpolation chip and outputs a first quadruple-speed image signal to pixels in the first display region; and a second timing unit which receives the interpolated ¼, ½, and/or ¾ frames from the second image interpolation chip and outputs a second quadruple-speed image signal to pixels in the second display region. The first timing unit transmits data to the second timing unit, and the second timing unit transmits data to the first timing unit.05-20-2010
20100007640LIQUID CRYSTAL DISPLAY DEVICE - A scanning electrode driving circuit (01-14-2010
20110063270SOURCE DRIVER OF DISPLAY DEVICE, AND METHOD OF CONTROLLING THE SAME - A source driver having a cascade connection configuration that drives signal lines of a display device according to a plurality of signals transmitted by a mini-LVDS interface from a controller during a predetermined period corresponding to a cascade signal received from a preceding stage, the source driver including a first reception circuit receiving a first signal of the plurality of signals; a second reception circuit receiving a second signal of the plurality of signals; and an enable control circuit that controls each of the first and second reception circuits to one of an active state and a standby state; in which the enable control circuit sets the second reception circuit to the active state according to the cascade signal received from the preceding stage, and sets the first and second reception circuits to the standby state according to a cascade signal output by the source driver to a subsequent stage.03-17-2011
20110193840METHODS FOR DRIVING ELECTROPHORETIC DISPLAYS USING DIELECTROPHORETIC FORCES - A dielectrophoretic display has a substrate having walls defining a cavity, the cavity having a viewing surface and a side wall inclined to the viewing surface. A fluid is contained within the cavity; and a plurality of particles are present in the fluid. There is applied to the substrate an electric field effective to cause dielectrophoretic movement of the particles so that the particles occupy only a minor proportion of the viewing surface.08-11-2011
20100085341Semiconductor integrated circuit, self-luminous display panel module, electronic apparatus, and method for driving power supply line - Disclosed herein is a semiconductor integrated circuit including a power supply line drive circuit configured to drive power supply lines connected to pixels that are arranged in a matrix on a self-luminous display panel.04-08-2010
20100118009PLASMA DISPLAY PANEL DISPLAY APPARATUS AND METHOD FOR DRIVING THE SAME - In the case of driving a plasma display panel for one field using a plurality of sub-fields each having a reset period in which reset discharge is generated in a discharge cell, an address period in which address discharge is generated in the discharge cell, and a sustain period in which sustain discharge is generated in the discharge cell, in a former period of the reset period, a rising ramp waveform voltage is applied to the scan electrodes, and a first voltage (Ve05-13-2010
20100118010LIQUID CRYSTAL DISPLAY DEVICE AND METHOD OF SUPPRESSING AFTERIMAGES - The invention relates to a liquid crystal display device including a first transistor, a plurality of sub-picture element electrodes formed in a picture element region, a control electrode formed in capacitance coupling with at least one of the plural sub-picture element electrodes, the control electrode being applied with a display voltage from the first transistor, and an auxiliary capacitance bus line held at a predetermined voltage level and constituting an auxiliary capacitance between the auxiliary capacitance bus line and the control electrode. A second transistor is provided between the sub-picture element electrode coupled with the control electrode by the capacitance coupling and the auxiliary capacitance bus line or between the sub-picture element electrode coupled with the control electrode by the capacitance coupling and the sub-picture element electrode connected to the first transistor.05-13-2010
20120032934METHOD AND DEVICE FOR DRIVING A BISTABLE NEMATIC DOT-MATRIX LIQUID CRYSTAL DISPLAY PANEL - Voltage consumption during flashing of a frame is suppressed. Under a state in which an image is written and held, when a waveform of low voltage at low frequency is applied to the whole surface of a bistable liquid crystal display panel, the liquid crystal molecules are inclined to some extent, if not to the state vertical to a substrate, and the frame displays gray close to white. After that, when the voltage application is stopped, the image displayed before the application appears because the orientation state of the bistable liquid crystal display panel is not broken. By utilizing this phenomenon, a state of applying the waveform of low voltage at low frequency and a non-application state are repeated at a given time interval, and hence the frame can be flashed with low power consumption.02-09-2012
20090201276DRIVING METHOD OF A PLASMA DISPLAY DEVICE AND A PLASMA DISPLAY DEVICE - At an on-cell reset, a positive ramp wave of an ultimate voltage, which is larger than a maximum voltage of a sustain pulse, and smaller than an ultimate voltage of a positive ramp wave applied to a Y electrode at an all-cell reset, is applied to the Y electrode to make a weak discharge occur at a cell where it is non-lighting at a previous sub-field and a wall charge thereof is decreased due to an influence from an adjacent cell, thereby, it makes it possible to return a wall charge state to a normal state, to be capable of lighting a cell to be lighted securely based on a display data.08-13-2009
20090284508TIME-DIVISION MULTIPLEXING SOURCE DRIVER FOR USE IN A LIQUID CRYSTAL DISPLAY DEVICE - A data driver for time-division multiplexing includes a first memory cell set having first memory cells, a second memory cell set having second memory cells, and a plurality of output lines. Each first memory cell is used for generating a first data signal in response to a first sampling control signal, and for outputting the first data signal in response to a first transmitting control signal. Each second memory cell is used for generating a second data signal in response to a second sampling control signal, and for outputting the second data signal in response to a second transmitting control signal. During a first line time period, the first sampling control signal is triggered while the second transmitting control signal is triggered. During a second line time period, the first transmitting control signal is triggered while the second sampling control signal is triggered.11-19-2009
20090278829ELECTRO-OPTIC DEVICE, DRIVING METHOD, AND ELECTRONIC APPARATUS - An electro-optic device includes pixels provided in correspondence with intersections between a number Rreal of plural scanning lines and plural data lines and turned on or off in accordance with data signals each supplied to the data lines when the scanning lines are selected. In the electro-optic device, one field is divided into a number Nsf of plural sub-fields and the number Nsf of sub-fields are classified into a first group having a period length formed by equally dividing one field into plural Ndiv and a second group having a period length corresponding to plural times of the sub-field of the first group. In the electro-optic device, gray scales are controlled in one field unit by turning on or off the pixels in each of the number Nsf of sub-fields. The electro-optic device includes: a scanning line driving circuit which, on the assumption of a number Rvir (where Rvir≧Rreal) of virtual scanning lines including the number Rreal of scanning lines, performs interlaced scanning on the number Rvir of virtual scanning lines by the number of lines according to a ratio of the period lengths of the sub-fields arranged in one field; and a data line driving circuit which supplies the data signals to the pixels located in selected scanning lines through the data lines. When two different values obtained as division number Ndiv of the one field are compared to each other, the division number Ndiv is selected such that a number Ys of reference interlaced scanning lines is smaller in the interlaced scanning and a selection period obtained by dividing the one field period by the product of the number Nsf of sub-fields and the number Rvir of virtual scanning lines is longer.11-12-2009
20130100098Micro-Projector, Control Signal for a Micro-Projector and Method for Generating the Same - A micro-projector, a control signal for a micro-projector and a method for generating the same are disclosed. The micro-projector includes a scanning module and a control module. The scanning module includes a micro reflection mirror and at least one scan axis connected to the micro reflection mirror. The control module connected to the scanning module outputs at least one scan axis control signal to the scanning module. The scan axis control signal is a periodic signal and has a waveform which includes a substantially linear portion and a non-linear portion. The proportion of the substantially linear portion to the waveform is larger than that of the non-linear portion to the waveform. In this manner, the unwanted vibration occurring in the micro reflection mirror of the micro-projector can be prevented.04-25-2013
20100201665Display Device Including a Liquid Crystal Screen with Secured Display - The general field of the invention is that of display devices comprising a liquid-crystal matrix screen composed of elementary pixels, said screen comprising at least a first electrode used as voltage reference and called the “backplane”, a second electrode in the form of a matrix electronic network delivering the drive voltages for controlling the pixels and control electronics for said electrodes, said screen being used in the so-called “normally black” mode, that is to say that in the absence of applied voltages, the optical transmission of the pixels is substantially zero. In the device according to the invention, the “backplane” drive voltage is a variable periodic voltage, the amplitude of variation of this voltage being sufficient so that in the absence of voltage on the second electrode, the optical transmission of the pixels is sufficient to be detected by an observer.08-12-2010
20100201666ELECTRO-OPTICAL DEVICE, SHIFT REGISTER CIRCUIT, AND SEMICONDUCTOR DEVICE - An electro-optical device is configured to be capable of using a region of a gate line drive circuit efficiently and preventing rising speed of a gate line selection signal from decreasing (rising delay), and a shift register circuit is composed of a single conductivity type transistor which is suitable for the device. The gate line drive circuit including an odd driver to drive odd rows of a plurality of gate lines, and an even driver to drive even rows thereof. Each unit shift register in the odd and even drivers receives a selection signal in the second previous row and activates its own selection signal two horizontal periods later. A start pulse of the even driver is delayed in phase by one horizontal period with respect to a start pulse of the odd driver.08-12-2010
20110199354SCANNING SIGNAL LINE DRIVE CIRCUIT, SHIFT REGISTER, AND DRIVE METHOD OF SHIFT REGISTER - There is realized a scanning signal line drive circuit (in a display device) capable of, even in a case where a circuit in a shift register is formed using a thin-film transistor which is relatively large in off leakage, suppressing unnecessary power consumption due to a leakage current in the thin-film transistor. In at least one embodiment, bistable circuit that forms the shift register includes a thin-film transistor for raising a potential of an output terminal based on a first dock, a region netA connected to a gate terminal of the thin-film transistor, another thin-film transistor for lowering a potential of the region netA, and a region netB connected to a gate terminal of the other thin-film transistor. With this configuration, the potential of the region netB is raised based on a third clock which is advanced in phase by 90 degrees with respect to the first clock and is lowered based on a fourth clock which is delayed in phase by 90 degrees with respect to the first clock.08-18-2011
20110199353SHIFT REGISTER CIRCUIT, SOURCE DRIVER INCLUDING THE SAME, AND METHOD - A shift register circuit and method includes: a plurality of shift registers configured to generate latch clock signals by sequentially shifting input signals according to first and second clock signals, the first and second clock signals including: periods longer than a shift register clock signal, and phases different from each other, wherein odd shift registers among the plurality of shift registers are configured to be driven by the first clock signal, and wherein even shift registers are configured to be driven by the second clock signal.08-18-2011
20080238906DISPLAY DRIVING CIRCUIT AND METHOD FOR CONTROLLING SIGNAL THEREOF - A display driving circuit capable of driving a display device with a selected polarity includes a plurality of selection units for selecting any one image data signal from a plurality of input image data signals in response to a first control signal, and a plurality of level converting units, each converting a level of the selected image data signal and outputting an output image data signal having the converted level in response to a second control signal. The second control signal has a level converted in a predetermined time from the point in time when a level of the first control signal is converted. The first control signal may be a polarity selection signal and the second control signal may be a vertical line start signal.10-02-2008
20090167740PLASMA DISPLAY DEVICE AND METHOD FOR DRIVING PLASMA DISPLAY PANEL - A method for driving a plasma display panel that includes a plurality of discharge cells including a display electrode pair composed of a scan electrode and a sustain electrode. One field period includes a plurality of subfields each including an initializing period, an address period and a sustain period. The method includes applying at least two kinds of sustain pulses to one electrode of the scan electrode and the sustain electrode in the sustain period, the two kinds of sustain pulses including a first sustain pulse as a reference and a second sustain pulse rising more steeply and falling more gently than the first sustain pulse. In the method, a drive waveform voltage applied to the one electrode includes a last drive waveform voltage in the sustain period and a predetermined number of the second sustain pulses continuously disposed immediately before the last drive waveform voltage.07-02-2009
20080291188DRIVING DEVICE AND DRIVING METHOD OF PLASMA DISPLAY PANEL - A method of driving a plasma display panel including: obtaining a temperature of the plasma display panel; and generating an electrode driving signal, wherein: if the temperature between first and second reference temperatures, generating a first waveform, if the temperature is less than the first reference temperature, generating a second waveform with an absolute value of a peak value being greater than a corresponding peak value of the first waveform, and if the temperature is greater than the second reference temperature, generating a third waveform with an absolute value of a peak value being less than a corresponding peak value of the first waveform; wherein an absolute value of a difference between the peak values of the second and first waveforms is larger than an absolute value of a difference between corresponding peak values of the third and first waveforms.11-27-2008
20080309651DRIVE CONTROL CIRCUIT DEVICE FOR FLAT PANEL DISPLAY APPARATUS - Provided is a technology related to a PDP apparatus and capable of realizing the efficiency improvement in the processing of a control circuit including the processing between a control circuit (waveform generating circuit unit) and a non-volatile memory (waveform ROM). In a control circuit of a PDP apparatus, an SFM (serial flash memory) is used as a non-volatile memory, and waveform decoding data and a waveform decoding address set are stored as a first waveform in the SFM. An LSI (waveform generating circuit LSI) stores the data from the waveform decoding data in a first SRAM in an internal SRAM unit and stores the data corresponding to one reading cycle (for example one SF) selected from the waveform decoding address set in a second SRAM in the internal SRAM unit.12-18-2008
20100265229LEVEL REGULATION CIRCUIT OF COMMON SIGNAL OF LCD - A level regulation circuit of a common signal of an LCD generates a first level voltage and a second level voltage according to a common voltage so as to generate a first common signal and a second common signal. Each pixel of the LCD includes two storage capacitors receiving the first common signal and the second common signal respectively. The level regulation circuit of the common signal uses an operational amplifier and one or two Zener diodes to generate the first level voltage and the second level voltage. The first level voltage and the second level voltage have the same voltage difference to the common voltage, so the flicker of the LCD can be reduced.10-21-2010
20080284768METHOD FOR DRIVING LIQUID CRYSTAL DISPLAY DEVICE - In a period T11-20-2008
20090160835SIGNAL PROCESSING CIRCUIT AND METHOD - A signal processing method is provided and includes the following steps. A first synchronizing signal having a synchronizing frequency and a next expected pulse with an expected rising edge is provided. A second synchronizing signal having a selected frequency being within a frequency range is produced when the synchronizing frequency of the first synchronizing signal is out of a frequency range. A third synchronizing signal having a first pulse with a first rising edge is produced when the synchronizing frequency is within the frequency range, wherein the first rising edge is produced at an expected time point. Whether the next expected pulse appears in a period from the expected time point to a certain time point is detected as a detecting result. And a first falling edge of the first pulse is produced based on the detecting result. A picture-field flicker phenomenon of an LCD is eliminated through the method.06-25-2009
20090160836LIQUID CRYSTAL DISPLAY DEVICE AND DRIVING METHOD THEREOF - A driving method of an LCD device adapted to improve the quality of pictures is disclosed. The driving method includes: deriving a frame detection signal from a data enable signal and a data clock signal; simultaneously deriving a start signal and a first gate clock signal from the frame detection signal and the data clock signal; and deriving a second gate clock signal from the first gate clock signal and the data clock signal. The first gate clock signal is identical with the start signal in a start time point of enable interval.06-25-2009
20110205203LIQUID CRYSTAL DISPLAY DRIVE CIRCUIT AND LIQUID CRYSTAL DISPLAY DEVICE - In order to carry out a display reset operation, a segment driver and a common driver are driven to operate as below during a display data reading period in which voltages to be applied to a liquid crystal display panel are nonuniform between lines. First, a shift register and a level shifter which are provided in the segment driver and a shift register and a level shifter which are provided in the common driver are driven to operate as usual, whereas a display control signal supplied from a controller causes output circuits to stop carrying out their respective output operations. In at least one embodiment, during a period in which a writing operation is carried out with respect to the liquid crystal display panel so as to carry out the display reset operation, the display control signal supplied from the controller allows the output circuits to carry out the respective output operations. This allows a memory (e.g., cholesteric) liquid crystal display device to carry out a display reset operation without causing display unevenness by simultaneously selecting a plurality of lines.08-25-2011
20090184948Column Driver Device, Driving Device, and Related Serial Transmission Device for a Liquid Crystal Display Device - The present invention discloses a serial transmission device for reducing instantaneous current including an input terminal for receiving serial data, a coding module coupled to the receiving terminal comprising a plurality of coding units in series for transforming the serial data to a plurality of coding results according to a plurality of coding schemes, and a plurality of output terminals respectively coupled to the plurality of coding units of the coding module for outputting the plurality of coding results.07-23-2009
20090128531Plasma display device and driving method thereof - A plasma display device and driving method generate a control signal based on an image signal from an external source and a mode signal from a mode input unit, and output a driving waveform based on the control signal, the driving waveform used to drive a plasma display panel of the plasma display device. The driving waveform may be changed from a parent waveform mode into a child waveform mode selected from a plurality of child waveform modes defining misdischarge prevention waveforms in accordance with the mode signal.05-21-2009
20120068982DISPLAY APPARATUS AND POWER CIRCUIT DEVICES THEREOF - A display apparatus and a power circuit device thereof are provided. The power circuit device includes: a transforming unit which outputs a first output current and a second output current in response to change of an input current; a first switching unit which switches to allow the input current to be selectively input; a first switch control unit which controls the first switching unit so that an operation voltage of the display apparatus reaches a first target value; a second switching unit which switches to allow the second output current to be selectively output; a backlight driving unit which drives the backlight based on the second output current; and a second switch control unit which controls the second switching unit so that a driving voltage of the backlight reaches a second target value.03-22-2012
20090015574Liquid crystal displays, timing controllers and data mapping methods - In a liquid crystal display (LCD), a liquid crystal panel includes a plurality of subpixels. Source drivers drive source lines of the liquid crystal panel and gate drivers drive gate lines of the liquid crystal panel. A timing controller generates combination pixel data using current pixel data and previous pixel data, and supplies the generated combination pixel data to the source drivers. The previous pixel data is generated by delaying the current pixel data by a first time period.01-15-2009
20100194726Display device and display method - In the display device and the display method of the present invention, a scanning signal line driving circuit controls falls of a scanning signal line, so as to make level shifts occurring to pixel potentials substantially uniform throughout display plane, the level shifts being caused by parasitic capacitances which parasitically exist in scanning signal lines. Fall waveforms of the scanning signal change at a change rate Sx which is a change quantity per unit time, and by desirably setting the change rate Sx, a change rate Sx08-05-2010
20090201275Gamma voltage generator, method of generating gamma voltage, and organic light emitting display using the same - A gamma voltage generator capable of displaying linear gray levels at low gray levels. The gamma voltage generator includes a ladder resistor positioned between an uppermost voltage and a lowermost voltage to output a plurality of voltages, a first gray level voltage selector for outputting one of some voltage values supplied from the ladder resistor to a first gray level voltage, a minimum voltage selector for outputting one of remaining voltage values excluding some voltage values supplied from the ladder resistor as a minimum voltage that displays a brightest gray level, an intermediate voltage selectors for outputting an intermediate gray level voltage using the first gray level voltage and the minimum voltage, and a gray level voltage output unit for generating gamma voltages required for generation of data signals using the first gray level voltage, the minimum voltage, and the intermediate gray level voltages.08-13-2009
20110141081DATA CONVERSION/OUTPUT APPARATUS FOR DIGITALIZING SENSOR DATA AND OUTPUTTING THROUGH A SENSOR ARRAY - A data conversion/output device includes a number of sensors, voltage-time conversion circuits that are arranged adjacent to respective sensors and change output levels upon the lapse of times corresponding to output voltage values from the sensors after a conversion operation start point in order to convert for voltage outputs of the sensors into times. The device also includes sensed data generation circuits outputting, as digital data, lapse times until the output levels of the voltage-time conversion circuits change after a conversion start point. The sensed data generation circuits include a counter for counting a clock signal. An operation start of the voltage-time conversion circuits and a start of count operation of the counter are staggered.06-16-2011
20110141080DISPLAY CONTROL APPARATUS AND METHOD OF CONTROLLING THE DISPLAY CONTROL DEVICE - A display control apparatus to drive a display panel to display an image and a control method of the display device. It is determined whether or not a number of different bits in a plurality of bits of display image signals that are to be continuously converted into analog signals are different from each other is equal to or more than a predetermined value. If it is determined that the number of different bits is equal to or more than the predetermined value, then the display image signal is modified so that the display panel is driven based on an analog signal converted from the modified display signal to display an image.06-16-2011
20090231315SHIFT REGISTER AND DISPLAY DRIVER THEREOF - A shift register and a display driver thereof are provided. The display driver submitted by the present invention can be directly disposed on a glass substrate of a liquid crystal display (LCD) panel to replace a scan driver commonly used in prior art, so that the cost of the liquid crystal display can be reduced. In addition, the stress taken by the output stage transistor of each shift register stage within the display driver submitted by the present invention can be reduced. Thus, each shift register stage has the highest reliability, and may consequently avoid the erroneous actions when each shift register stage is operated for a long time.09-17-2009
20090231314IMAGE DISPLAYING APPARATUS AND METHOD, AND IMAGE PROCESSING APPARATUS AND METHOD - In an image displaying apparatus including a motion compensated rate converting (FRC) portion, deterioration of image quality is prevented in an image having a high-speed region and a low-speed region mixed. The FRC portion includes a motion vector detecting portion 09-17-2009
20090244040PLASMA DISPLAY PANEL, DRIVING METHOD OF PLASMA DISPLAY PANEL, AND PLASMA DISPLAY APPARATUS - The present invention provides a technique relating to a PDP and capable of canceling or reducing luminance unevenness due to voltage drop or the like. In a structure of the PDP, for example, two types of cells different in discharge timing are arranged in a zigzag manner on a screen. For example, the two types of cells have different discharge gap lengths because of a difference in areas and lengths of projections of electrodes of the respective cells. By the dispersion of discharge timings of cells, the voltage drop or the like is reduced. The design characteristic obtained by the arrangement pattern is superimposed on panel manufacture characteristic, whereby luminance unevenness is cancelled or reduced in display characteristic.10-01-2009
20090251449ARRAY SUBSTRATE, METHOD OF MANUFACTURING THE SAME AND DISPLAY APPARATUS HAVING THE SAME - A first wiring is formed on an array substrate, such that the first wiring has a first protrusion. A second wiring is formed on a different layer from that of the first wiring, such that a portion of the second wiring overlaps with the first protrusion. A protection layer that covers the first and second wirings is formed, such that the protection layer has first and second contact holes that expose the first and second wirings, respectively. Then, a third wiring that electrically connects the first wiring to the second wiring through the first and second contact holes is formed. When electrical connection between the first and second wirings is abnormal, a laser beam is irradiated toward the first protrusion, so that the electrical connection may be repaired.10-08-2009
20120194495STEREOSCOPIC IMAGE DISPLAY DEVICE USING A BARRIER LIQUID CRYSTAL DEVICE - An LC barrier panel of a stereoscopic image display device has a substrate on which first barrier pixels and second barrier pixels are alternately arranged in a vertical direction and on which the first barrier pixels and third barrier pixels are alternately arranged in a horizontal direction. On a counter substrate, a counter electrode is formed to cover the entire surface of the display region. The third barrier pixels and the counter electrode are supplied with the same drive signal while an effective voltage is applied between the counter electrode and the first and second barrier pixels to perform vertical stripe display. Alternatively, the second barrier pixels and the counter electrode are supplied with the same drive signal while an effective voltage is applied between the counter electrode and the first and third barrier pixels to perform horizontal stripe display.08-02-2012
20120194494DISPLAY PANEL AND METHOD OF MANUFACTURING THE SAME - In a display panel and a method of manufacturing the same, the display panel includes a first display substrate, a second display substrate and a sealing member. The first display substrate includes a first alignment layer in a first display region and a first peripheral region of a first base substrate, and a first backflow-blocking pattern in the first peripheral region and having a curvature to surround a vertex portion of the first display region. The second display substrate includes a second alignment layer in a second display region which faces the first display region and a second peripheral region of a second base substrate. The sealing member includes a corner portion having substantially the same curvature as the first backflow-blocking pattern to surround an outline of the first and second peripheral regions.08-02-2012
20120105405DISPLAY CLIP SYSTEM AND TIMING CLIP CONTROL METHOD THEREOF - A display clip system and a timing clip control method thereof are provided. The clip system is connected to a gate driver circuit, and includes a timing controller and a clip module. According to a system input signal and it's frame rates, the timing controller generates an enable signal, a clip trigger signal, and a base working signal. The clip module adjusts the base working signal by using the enable signal and the clip trigger signal. Then, the base working signal carries a first clip voltage to output to the gate driver circuit. When the frame rate changes, the timing controller adjusts trigger points and trigger time lengths of the enable signal and the clip trigger signal, and the clip module adjusts the base working signal. Then, the base working signal carries a second clip voltage equal to the first clip voltage to output to the gate driver circuit.05-03-2012
20090315870DISPLAY DEVICE AND DRIVING METHOD THEREOF - The present invention relates to a display device and a driving method thereof. A display device in the present invention comprises: a capacitor connected between a first node and a second node; a switching transistor controlled by a first scanning signal and transmitting a data voltage to the first node; an emission control transistor controlled by a second scanning signal and transmitting a reference voltage to the second node; a driving transistor comprising a control terminal connected to the first node, an output terminal connected to the second node, and an input terminal; a driving control transistor controlled by a third scanning signal and transmitting a driving voltage to the input terminal of the driving transistor; and a light-emitting device connected to the second node. Accordingly, display contrast of a display device may be improved.12-24-2009
20100149148DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A method of driving a display device includes: sub-sampling an original image signal; generating a sub-image signal; generating a sub-interpolated image signal from the sub-image signal; generating an interpolated frame by realigning the sub-interpolated image signal; and displaying an image having the interpolated frame.06-17-2010
20090122041PLASMA DISPLAY DEVICE AND METHOD OF DRIVING PLASMA DISPLAY PANEL - In displaying a predetermined image on a plasma display panel, occurrence of an initializing bright point can be suppressed to reduce the maximum voltage in an all-cell initializing operation, light emission in the all-cell initializing operation is suppressed to reduce the black luminance, and the contrast is sharpened. In driving the plasma display panel, one field period includes a plurality of subfields having a setup period for causing initializing discharge in discharge cells, an address period, and a sustain period. One field period includes at least one subfield for applying ramp waveform voltage increasing in the setup period to the scan electrodes. The maximum voltage of the ramp waveform voltage can be varied. When a predetermined image establishing a previously determined condition is displayed, the ramp waveform voltage is generated whose maximum voltage is smaller than when an image other than the predetermined image is displayed, and a positive voltage is applied to the data electrodes at least while the ramp waveform voltage having the smaller maximum voltage is applied to the scan electrodes.05-14-2009
20100156870Display apparatus and method - Provided are a display device and method. The display device includes a plurality of data driving integrated circuits (ICs) configured to receive reception signals, each of which includes data and load signal information indicating an application starting time point of the data, and apply parallel data signals corresponding to the data at the application starting time points according to the load signal information included in the reception signals, and a display panel configured to display an image according to the parallel data signals, wherein at least two of the data driving ICs apply parallel data signals at different application starting time points.06-24-2010
20100156868LIQUID CRYSTAL DISPLAY APPARATUS - A liquid crystal display apparatus includes a first group of pixel electrodes having a first parasitic capacitance, a second group of pixel electrodes having a second parasitic capacitance, a common electrode, liquid crystal interposed between the common electrode and the first and second groups of pixel electrodes, respectively, and a driver circuit determining a first common voltage in accordance with the first parasitic capacitance and supplying the first common voltage to the common electrode during a writing period of the first group of pixel electrodes so as to substantially offset a voltage drop in the second group of pixel electrodes due to the first parasitic capacitance, the driver circuit determining a second common voltage in accordance with the second parasitic capacitance and supplying the second common voltage to the common electrode during a writing period of the second group of pixel electrodes so as to substantially offset a voltage drop in the second group of pixel electrodes due to the second parasitic capacitance.06-24-2010
20090115759METHOD AND APPARATUS FOR DRIVING PLASMA DISPLAY PANEL - The present invention relates to a plasma display panel, and more specifically, a method and an apparatus for driving a plasma display panel. According to the present invention, a method for driving a plasma display panel in which pluralities of first electrodes and second electrodes are arranged parallel and to each other adjacently on an upper substrate, a plurality of third electrodes is arranged to cross the pairs of first and second electrodes at electrode crossing areas and define corresponding discharge cells at the electrode crossing areas on an lower substrate, wherein said method for driving a plasma display panel comprises steps of: forming wall charges on the upper and lower substrate by applying first rising ramp waveform to said first electrodes during a first period of a reset period; erasing partly the wall charges which are formed on the upper substrate by applying second rising ramp waveform to said second electrodes during a second period of a reset period; erasing partly the wall charges which are formed on the upper and lower substrates by applying falling ramp waveform to said first and second electrodes during a third period of a reset period; selecting the discharge cells by applying data voltage to said third electrodes and applying scan voltage to said first electrodes during a address period; and displaying an image on screen by applying sustain voltage to said first and second electrodes alternatively during a sustain period.05-07-2009
20100013814 LCD Circuit and A Method For Triggering At Least One Pixel Of A Liquid Crystal Display - The invention relates to an LCD circuit and a method for triggering at least one pixel (01-21-2010
20110175875DRIVING METHODS WITH VARIABLE FRAME TIME - The present invention is directed to driving waveforms and a driving method for an electrophoretic display. The method and waveforms have the advantage that the changes in the driving voltages due to the shift are minimized. In addition, the overall driving time for the waveforms is also shortened due to the shortened driving frames. There are no additional data points required as the number of the driving frames remains the same. Therefore, the power consumption is nearly identical with the waveform having driving frames of a fixed frame time.07-21-2011
20100259522DRIVER CIRCUIT OF DISPLAY DEVICE - A driver circuit includes a mode control unit and a plurality of source drivers to drive a display panel including N pixel cells on each scan line. Each source driver has M driving channels, and a first subset of the driving channels and a second subset of the driving channels are respectively in a first mode and a second mode according to a preset mode sequence, wherein M≧N. The 110-14-2010
20100188379Display and Method for Driving the Same - A display comprises a panel, a gate driver and a plurality of source drivers. The panel comprises a plurality of pixels arranged in an array. The gate driver is provided for selectively activating a gate line of the panel. The source drivers, during a line period, receive a plurality of transfer pulses, each of which corresponds to one of the source drivers. The source drivers drive one row of the pixels corresponding to the activated gate line, while triggered by the corresponding transfer pulse, wherein the transfer pulses are not all identical. A method for driving a display is also disclosed herein.07-29-2010
20100182295LCD DRIVING CIRCUIT AND DRIVING METHOD THEREOF - A LCD driving circuit is provided herein. The LCD driving circuit includes a data processor for processing a plurality of data signals to generate a plurality of processed data signals to respectively drive a line of subpixels arranged on a LCD panel, a driving control module having a data sequence unit for receiving and arranging the processed data signal, and a switching control unit to generate a control signal and a plurality of driving signals corresponding with the control signal to drive a plurality of transistors, a source line driving circuit having a plurality of latching units to respectively store the processed data signal.07-22-2010
20100156866DISPLAY APPARATUS AND CONTROL METHOD THEREOF - The present invention relates to a display apparatus to synchronize a synchronous signal and an inverter driving signal in response to a display mode, and a control method thereof. A back light unit of the display apparatus makes a back light to dim based on an inverter driving signal, and a dimming frequency of the back light varies in response to a synchronous signal frequency of the image. When a synchronous signal having an abnormal frequency is inputted to the back light unit for several seconds, the back light unit holds the frequency of the inverter driving signal and the frequency of the inverter driving signal varies smoothly in response to the display mode.06-24-2010
20110102397ELECTROPHORETIC DISPLAY DEVICE, DRIVING METHOD THEREOF, AND ELECTRONIC APPARATUS - Disclosed is an electrophoretic display device including an electrophoretic element, a scanning line and a data line, a pixel formed corresponding to an intersection parts of the scanning line and the data line, and a power line connected to the pixel. The pixel is provided with a pixel electrode, a select transistor having a gate connected to the scanning line, a first driving transistor having a gate connected to the data line, and a second driving transistor having a gate connected to a drain of the first driving transistor, and a source connected to the power line. A ramp waveform is input to the gate of the second driving transistor through the first driving transistor, and a current flows between the power line and the pixel electrode through the second driving transistor.05-05-2011
20110102395METHOD AND SYSTEM OF CONTROLLING HALT AND RESUME OF SCANNING AN LCD - A system and method of controlling scanning actions of an LCD is disclosed. A timing controller (Tcon) output enable (OE) generator generates an original OE signal, and a noise detection unit generates a noise-detected signal upon detecting noise. An OE mask generator generates a mask signal according to the noise-detected signal and the original OE signal. A masking unit generates a resultant OE signal according to the mask signal and the original OE signal.05-05-2011
20100253663COUNTER ELECTRODE DRIVE CIRCUIT AND COUNTER ELECTRODE DRIVING METHOD - A counter electrode drive circuit of at least one embodiment of the present invention includes: an amplifier for generating a voltage to be applied to a counter electrode; a voltage detecting section for detecting whether the voltage to be applied to the counter electrode at a rise and at a fall of a voltage waveform that is to be applied to the counter electrode is higher or lower as compared to two threshold voltages; and a clock generating section for (i) reducing a power capacity of the amplifier in a case where the voltage to be applied to the counter electrode is higher than a higher first threshold voltage, and (ii) reducing the power capacity of the amplifier in a case where the voltage to be applied to the counter electrode is lower than a lower second threshold voltage. This allows providing a counter electrode drive circuit which can eliminate sounds from being heard from a liquid crystal display device, while holding down the amount of power consumption.10-07-2010
20100253662METHOD AND APPARATUS FOR GENERATING CONTROL SIGNAL - A method and an apparatus for generating a control signal are provided. This method includes following steps. First, a reset parameter is generated according to a data enable signal and a clock signal, wherein the reset parameter indicates a cycle of the data enable signal. Next, a counting value is generated according to a positive rising edge of the data enable signal and the reset parameter. Finally, a control signal is generated according to the counting value. As a result, the control signal can be continually generated to apply various techniques when variation the data enable signal is ceased.10-07-2010
20110210953LIQUID CRYSTAL DISPLAY DEVICE AND LIQUID CRYSTAL DRIVING METHOD - A liquid crystal display device includes a segment driver, a common driver, and a voltage setting unit. The voltage setting unit derives a voltage at which a previous drive line becomes a focal conic state regardless of image data by applying a synthesized voltage of a voltage that is applied from the segment driver and a voltage that is applied from the common driver to the previous drive line. Then, the voltage setting unit sets the voltages that are applied from the segment driver and the common driver on the basis of the derived result.09-01-2011
20090284509DISPLAY DEVICE AND CLOCK EMBEDDING METHOD - An image display device employs an interface protocol wherein integrated image plus control data is transmitted from a signal controller circuit to each of a plurality of master data driving circuits. The integrated image plus control data includes display control data as well as image-defining data. The signal controller circuit determines which of a plurality of data driving circuits is to function as a master data driving chip and which as a slave data driving chip. The signal controller circuit directly transmits respective integrated image plus control data signals to corresponding ones of the master data driving chips. Each master data driving chip then forwards part of the received integrated image plus control signal to its corresponding slave data driving chip.11-19-2009
20090322720IMAGE DISPLAY DEVICE - A simple double-speed process circuit 12-31-2009
20090115758Drive Circuit of Display Apparatus, Pulse Generation Method, Display Apparatus - The subject invention provides a drive circuit for a display apparatus, comprising: a shift register; and a pulse generation circuit for generating a drive pulse signal using an output pulse signal generated in the shift register, wherein: the pulse generation circuit forms a pulse-starting edge and a pulse-termination edge of the drive pulse signal using a rise or a fall of pulse resulting from activation of the output pulse signal. On this account, pulse generation can be performed with high accuracy in a pulse generation circuit used for a drive circuit for a display apparatus or the like.05-07-2009
20110032231DISPLAY DEVICE - A display device includes a frame frequency conversion circuit configured to convert a frame frequency of an input display data and a timing control circuit configured to control a first drive circuit and a second drive circuit based on a frame frequency after the conversion. The display device generates at least two display areas on the display panel. The at least two display areas display images at different frame frequencies. The display device further includes a switch unit configured to display an image at the frame frequency before the conversion at one of the at least two display areas and configured to display an image at the frame frequency after the conversion at another one of the at least two display areas. At least one of a boundary position and a size of the at least two display areas varies with time.02-10-2011
20090109203Liquid Crystal Display Device and Method for Driving the Same - A data signal line drive circuit is provided with first sampling portions, and second sampling portions operated at a lower speed. By the action of selection circuits, the first sampling portions are operated during a normal display mode, and the second sampling portions are operated during a partial display mode. To ensure a correct sampling operation, one line time and a sampling interval are rendered longer during a display period of the partial display mode than during the normal display mode. During the normal display mode, both the first sampling portions and the second sampling portions may be operated. Thus, power consumption of a liquid crystal display device during the partial display is reduced.04-30-2009
20110001739DISPLAY APPARATUS AND METHOD OF TESTING THE SAME - A display apparatus includes a delay generation circuit that generates a reference signal and a competing signal, the competing signal being generated based on a delay set signal, an input order judgment circuit that judges an input order of the reference signal and the competing signal, a delay set circuit that generates the delay set signal based on a judgment result in the input order judgment circuit, and an internal synchronous control circuit that controls transfer of display data between a CPU and a display panel. An operation test of the internal synchronous control circuit is performed using the reference signal and the competing signal. Hence, fault coverage can be enhanced.01-06-2011
20110001738DISPLAY DEVICE AND DRIVING METHOD THEREOF - A display device includes a gate line, a data line, a switching transistor connected to the data line, a variable resistance unit, a first capacitor connected to the variable resistance unit and a micro-shutter connected to the resistance unit and the first capacitor. The switching transistor is controlled by a gate-on voltage supplied by the gate line, and a resistance of the variable resistance unit is changed based on a data voltage supplied to the variable resistance unit from the data line via the switching transistor. The micro-shutter electrode executes a shutoff operation based on a voltage at a connection node between the variable resistance unit and the first capacitor.01-06-2011
20110025662TIMING CONTROLLER AND LIQUID DISPLAY DEVICE - An embodiment of the invention provides a timing controller. The timing controller comprises a frequency detector, a signal generator and a multiplexer. The frequency detector receives a reference clock signal and an input clock signal to generate a decision signal. The signal generator generates a first signal and a second signal. The multiplexer receives and outputs one of the first signal and the second signal according to the decision signal.02-03-2011
20100156869GATE DRIVING DEVICE AND LIQUID CRYSTAL DISPLAY HAVING THE SAME - A gate driving device includes a plurality of stages, a first dummy stage connected to the plurality of stages and a second dummy stage connected to the first dummy stage. Stages of the plurality of stages are cascaded. The first dummy stage includes a first charge unit which receives a first input signal from a previous stage of the plurality of stages and is thereby charged, and a first pull-up transistor which outputs a clock signal when the first charge unit reaches a first charge level. The second dummy stage includes a second charge unit which receives a second input signal from the first dummy stage and is thereby charged, and a second pull-up transistor which outputs the clock signal when the second charge unit reaches a second charge level higher than the first charge level.06-24-2010
20110115768METHOD OF DRIVING ELECTRO-OPTICAL DEVICE, ELECTRO-OPTICAL DEVICE, AND ELECTRONIC APPARATUS - An electro-optical device includes: a data line driver applying the signal potential in such a manner that a writing polarity is reversed more than once in the field time period, and the writing polarity of each of sub field time periods making up a certain field time period is the opposite of the writing polarity of the corresponding one of sub field time periods making up the next field time period; a scanning line driver applying the scanning signal in such a manner that a total length of the sub field time periods in which writing in one polarity is performed in each cycle of two consecutive fields one of which is an odd field and the other of which is an even field is different from a total length of the sub field time periods in which writing in the other polarity is performed in the each cycle of two consecutive fields.05-19-2011
20110080393Driver and organic light emitting diode display using the same - A driver comprises odd-numbered stages configured to be driven by first and second clock signals and even-numbered stages configured to be driven by the second and third clock signals. Each stage is coupled to a corresponding emission control line, and includes a first driver, a second driver, and a third driver. In a first stage, the first and second drivers receive first and second start pulses and output first and second output signals, respectively. In each stage except the first stage, the first and second driver receives first and second output signals of a previous stage and outputs first and second output signals of each stage, respectively. In each stage, a third driver receives the first and second output signals of each stage and outputs an emission control signal to be transmitted to an emission control line coupled to each stage.04-07-2011
20090219269DRIVER CIRCUIT, METHOD FOR DRIVING, ELECTRO-OPTICAL DEVICE AND ELECTRONIC APPARATUS - A driver circuit includes a plurality of data signal output units each configured to provide the electro-optical device with the data signal, a timing signal output unit configured to provide the electro-optical device with the timing signals, a detection unit configured to detect signal levels of the data signals provided by the data signal output units, an adjustment unit configured to adjust the signal levels of the data signals provided by the data signal output units so as to approach one another on the basis of the detected signal levels, and a signal control unit configured to control the timing signal output unit so as to stop at least one of the timing signals before the detection unit detects the signal level.09-03-2009
20090219268IMAGE DISPLAY APPARATUS, CORRECTION CIRCUIT THEREOF AND METHOD FOR DRIVING IMAGE DISPLAY APPARATUS - A correction circuit includes a timing control circuit for dividing a drive period assigned for drive of display devices into plural calculation slots, a luminance calculation circuit for calculating luminance including an effect of a voltage drop for each calculation slot, an accumulation circuit for temporally accumulating the luminance for each calculation slot, a corrected data determination circuit for outputting, as a corrected data, the value determined in accordance with the calculation slot at the time point when the accumulated luminance reaches a target luminance value, and a conversion circuit for converting the corrected data into modulation data to be applied to a modulation circuit. The width of the calculation slot is shorter than the width of the slot for pulse width modulation in at least a part of the drive period. The conversion circuit reduces the bit width of the corrected data by pseudo-gradation processing.09-03-2009
20100177079Active Device Array Substrates and Liquid Crystal Display Panels and Liquid Crystal Displays Thereof - Active device array substrates and liquid crystal display (LCD) panels and LCDs thereof are provided. In a representative device, a set of bias lines used for providing bias signals to storage capacitor of pixel units with a bright zone and a dark zone is provided on the active device array substrate.07-15-2010
20090322721METHODS FOR REDUCING EDGE EFFECTS IN ELECTRO-OPTIC DISPLAYS - Edge effects in electro-optic displays are reduced by (a) ensuring that during rewriting of the display, the last period of non-zero voltage applied all pixels terminates at substantially the same time; and (b) scanning the display at a scan rate of at least 50 Hz.12-31-2009
20100039415PLASMA DISPLAY DEVICE AND METHOD FOR DRIVING PLASMA DISPLAY PANEL - A plasma display panel; a scan electrode drive circuit for generating a gently decreasing downward inclined waveform voltage in an initializing period, a gently increasing first inclined waveform voltage in an initializing period of at least one subfield in one field period, and a second inclined waveform voltage having a steeper gradient than the first inclined waveform voltage and decreasing immediately after the increasing waveform voltage reaches a predetermined potential in the last part of the sustain period; and a panel temperature detecting circuit are provided. The lowest voltage in the downward inclined waveform voltage is switched at a first voltage, a second voltage higher than the first voltage and a third voltage higher than the second voltage to generate a downward inclined waveform voltage. The lowest voltage is switched according to the temperature detected by the panel temperature detecting circuit to generate the downward inclined waveform voltage.02-18-2010
20100039418DUAL-IMAGE FLAT DISPLAY DEVICE - A dual-image flat display device includes a first and a second substrates parallel with each other, a liquid crystal layer having liquid crystal molecules, and at least a pixel disposed on the second substrate. The pixel includes pluralities of sub-pixels arranged side by side along a first direction. Each sub-pixel has a first azimuthal angle domain and a second azimuthal angle domain, wherein the first and second azimuthal angle domains are arranged side by side along a second direction in the sub-pixel, and the second direction is not parallel with the first direction. The azimuthal angles of liquid crystal molecules in the first and second azimuthal angle domains have an included angle less than 180°.02-18-2010
20100053134PLASMA DISPLAY DEVICE AND PLASMA DISPLAY PANEL DRIVING METHOD - A sustain pulse generation circuit of a plasma display device generates and switches a first sustain pulse for causing light emission having double peaks, a second sustain pulse having a falling edge steeper than that of the first sustain pulse, and a third sustain pulse having a rising edge and a falling edge steeper than those of the first sustain pulse and causing light emission having a single peak. The second sustain pulse or the third sustain pulse is generated immediately before the third sustain pulse. The first sustain pulse is generated immediately before the second sustain pulse. Provided between the second sustain pulse and the third sustain pulse and between the third sustain pulses is a first overlap period in which a time period for causing the corresponding sustain pulse to rise is overlapped with a time period for causing the corresponding sustain pulse to fall.03-04-2010
20100053135ELECTRONIC DEVICE USING MOVEMENT OF PARTICLES - A method is provided of driving an electronic device comprising an array of device elements, each device element comprising particles which are moved to control a device element state, and each device element comprising a collector electrode, and an output electrode. The method comprises: in a reset phase, applying a first set of control signals to control the device to move the particles to the a reset electrode; and in an addressing phase, applying a second set of control signals to control the device to move the particles from the reset electrode such that a desired number of particles are at the output electrode. The second set of control signals comprises a pulse waveform oscillating between first and second voltages in which the first voltage is for attracting the particles to the reset electrode and the second voltage is for attracting the particles from the reset electrode to the output electrode, and wherein the duty cycle of the pulse waveform determines the proportion of particles transferred to the output electrode in the addressing phase. This control method provides well-controlled packets of particles which are collected in a vortex at the reset electrode before being passed on, in part, towards the output electrode (for example via the gate electrode).03-04-2010
20120242637Liquid Crystal Display Apparatus - A liquid crystal display apparatus comprises a liquid crystal panel in which plural sub-pixels of red, green, blue, and a fourth color, which has a higher brightness than the other three colors, are arranged in a column direction and a row direction, and a signal control unit which generates drive signals for the respective sub-pixels. The signal control unit generates the drive signals for the respective sub-pixels not only so that each pixel of the liquid crystal panel is made up of four sub-pixels which are adjacent to one another in two consecutive columns and two consecutive rows, but also so that there is one column and one row overlap between every four pixels which are adjacent to one another in two consecutive columns and two consecutive rows.09-27-2012
20100245311LOW VOLTAGE DRIVER SCHEME FOR INTERFEROMETRIC MODULATORS - A method of driving electromechanical devices such as interferometric modulators includes applying a voltage along a common line to release the electromechanical devices along the common line, followed by applying an address voltage along the common line to actuate selected electromechanical devices along the common line based on voltages applied along segment lines. Hold voltages may be applied along common lines between applications of release and address voltages, and the segment voltages may be selected to be sufficiently small that the segment voltages will not affect the state of the electromechanical devices along other common lines not being written to.09-30-2010
20120120039Driving System for Display and Method of the Same - The present invention discloses a driving system and the method thereof for a display system, and particularly for the display system with a bi-stable display. The driving system of the present invention has the advantage of requiring less memory capacity than that of traditional driving systems. The driving system of the present invention reads one frame data at one time and will clear the current frame before displaying a new frame. Owing to the current frame being cleared before a new frame being updated, the driving system needs not to record the difference of gray level between the two frames and thereby reduces the requirement of memory capacity.05-17-2012
20110069052INTEGRATED CIRCUIT DEVICE AND ELECTRONIC APPARATUS - An integrated circuit device includes: a driving voltage output unit that outputs a driving voltage supplied to a segment electrode of an electro-optical panel; a display data storage unit that stores display data; and a driving waveform information output unit that outputs driving waveform information when a display state of the segment electrode is changed from a first display state corresponding to first display data to a second display state corresponding to second display data, wherein the driving voltage output unit outputs the driving voltage specified by the first display data and the second display data from the display data storage unit, and the driving waveform information from the driving waveform information output unit.03-24-2011
20100039416METHOD OF DRIVING DISPLAY APPARATUS AND DRIVING CIRCUIT FOR DISPLAY APPARATUS USING THE SAME - In a driving method of a display apparatus using a driving circuit, when an image signal is a film image signal, first, second, and third original image signals are extracted based on the film image signal. Then, a first compensation image signal is generated based on first and second original image signals, and a second compensation image signal is generated based on second and third original image signals. The first original image signal, the first compensation image signal, the second original image signal, and the second compensation image signal are sequentially output to have a driving frequency higher than an input frequency. In addition, the first original image signal, the first compensation image signal, the second original image signal, and the second compensation image signal are output i, k, j, and k times, respectively. Thus, a trembling phenomenon perceived by a viewer of a film image may be prevented.02-18-2010
20120200548LIQUID CRYSTAL DISPLAY DEVICE - Since a first and a second source-follower PMOS transistor in a pixel have gates connected to a first and a second capacitor and are used always in on state, respectively, only respective threshold voltages in the first and second source-follower PMOS transistors are set to be +0.5 V and put in normally-on state. A current value in each of the first and second source-follower PMOS transistors is controlled by a constant current load transistor, and on/off thereof is controlled by the constant current load transistor and each of first and second switching NMOS transistors. Further, each of the first and second switching NMOS transistors intermediates to limit an outputtable voltage range and thereby optimization is performed so as to maximize a range where linearity is secured by shifting the respective threshold voltages of the first and second source-follower PMOS transistors.08-09-2012
20080266278COLOR CHOLESTERIC LIQUID CRYSTAL DISPLAY DEVICES AND DRIVING METHODS THEREOF - Color cholesteric liquid crystal display devices and driving methods thereof are provided. A color cholesteric liquid crystal display device includes a color cholesteric liquid crystal display panel with a plurality of sub-pixels. A driving module exerts a first voltage on a portion of sub-pixels of the color cholesteric liquid crystal display panel to hold displaying states of the biased sub-pixels. An input element exerts pressure on the color cholesteric liquid crystal display panel to change displaying states of the unbiased sub-pixels.10-30-2008
20100315397DISPLAY APPARATUS AND METHOD - A display apparatus includes: a video processor which performs calibration; a signal generator which generates a signal; and a controller which controls the signal generator to generate an analog signal corresponding to a predetermined direct current voltage when performing the calibration, and controls the video processor to convert the analog signal into the digital signal and to adjust the digital signal to have a same value as a reference value. The signal input for calibration is achieved in a board controllable by a microcomputer, so that the board itself can automatically perform the calibration with regard to various kinds of signals without connection of an external device.12-16-2010
20080252630Display device and method for driving the same - Provided are a display device and a method for driving the same. The display device includes: a plurality of display modules; a plurality of display module drivers for respectively driving the display modules; a data divider receiving data signals for displaying an image on the display device and separating the received data signals into output data signals corresponding to each respective display module driver; and a timing control signal generator for generating a timing control signal to be supplied commonly to the display module drivers.10-16-2008
20120200547Gate Driver with Multiple Slopes for Plasma Display Panels - According to an exemplary embodiment, a driver circuit for generating a reset pulse of an output waveform includes a plurality of ramp paths, each ramp path being configured to control the slope of the reset pulse. The driver circuit also includes a falling switch configured to selectively hold the output waveform low. The driver circuit further includes a switch controller for selectively enabling the plurality of ramp paths and the falling switch to generate the reset pulse. The switch controller can selectively enable the plurality of ramp paths responsive to a reference setting signal to select the slope of the reset pulse. The driver circuit can also generate a sustain pulse. The driver circuit is can generate the reset pulse and the sustain pulse by driving a transistor.08-09-2012
20100039417PLASMA DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A scan electrode driving circuit applies a rising ramp waveform voltage to scan electrodes (SCN02-18-2010
20110080392SYSTEM AND METHOD FOR REINITIALIZING A SCREEN CONTROLLER OF AN ELECTRONIC DISPLAY DEVICE - A system for and method of reinitializing a screen controller of an electronic display device, such as an electrophoretic display, are disclosed. The system may comprise at least one computer processor associated with a screen controller of an electrophoretic display device, where the at least one computer processor may be configured to initialize screen controller registers, loading a waveform into the screen controller of the electrophoretic display device, copying previously stored screen image data stored in direct memory access to current storage of the screen controller; and executing an update process to efficiently reinitialize the screen controller of the electrophoretic display after panel power to the electrophoretic display is provided by at least one power source of the electrophoretic display.04-07-2011
20100079427PIXEL ARRAY, METHOD FOR DRIVING THE SAME AND DISPLAY PANEL - A pixel array, a method for driving the same, and a display panel are provided. The pixel array includes a number of pixel sets, each of which includes a first scan line, a second scan line, a data line, a first active device electrically connected to the first scan line and the data line, a second active device electrically connected to the second scan line and the first active device, a first pixel electrode, a second pixel electrode, a first common electrode line, and a second common electrode line. The first pixel electrode and the second pixel electrode are electrically connected to the first active device and the second active device, respectively. The first common electrode line is disposed under the first pixel electrode and electrically connected to a direct current. The second common electrode line is disposed under the second pixel electrode and electrically connected to an alternating current.04-01-2010
20100079428ELECTROPHORETIC DISPLAY DEVICE, ELECTRONIC APPARATUS, AND METHOD FOR DRIVING ELECTROPHORETIC DISPLAY DEVICE - An electrophoretic display device is provided. The electrophoretic display device includes: a pixel electrode; a counter electrode that is provided opposite to the pixel electrode; an electrophoretic element being sandwiched between the pixel electrode and the counter electrode; a pixel switching element; a capacitor that is connected to the pixel switching element; a switching circuit that is provided between the capacitor and the pixel electrodes; a first control line that is connected to the switching circuit; and a second control line that is connected to the switching circuit. The switching circuit performs switching operation on the basis of a signal outputted from the capacitor for a connection state switchover so as to connect either the first control line or the second control line to the pixel electrode.04-01-2010
20080218502DISPLAY APPARATUS AND METHOD OF DRIVING THE SAME - A display apparatus includes a gate driver which sequentially outputs a gate signal at a high state in response to a gate control signal and a data driver which converts image data into a data signal in response to a data control signal. The display apparatus further includes a display panel which includes a plurality of gate lines which sequentially receive the gate signal, a plurality of data lines which receive the data signal and a plurality of pixels connected to the gate and data lines and which receive the data signal in response to the gate signal to display an image. The polarity of the data signal is inverted after the gate signal transitions to a low state.09-11-2008
20100194728CHOLESTERIC LIQUID CRYSTAL DISPLAY DEVICE - A cholesteric liquid crystal display device in which a first step for applying a high voltage pulse to initialize a pixel and a second step for applying a low voltage pulse to increase a coexistence ratio of a focal conic state to the planar state in the initialized pixel are performed and a gradation value is determined by a cumulative time during which the low voltage pulse is applied, the device includes: a voltage generation circuit; and a driver circuit, wherein: the voltage generation circuit includes: a step-up part that generates a step-up voltage from a power source voltage; a voltage switching part; and a voltage stabilization part that generates the predetermined voltage in accordance with the voltage control signal from the step-up voltage, wherein the voltage stabilization part suppresses variations in output voltage; and the step-up part switches step-up ratios between the first step and the second step.08-05-2010
20100194727PLASMA DISPLAY DEVICE - In a plasma display device, a temperature-monitoring electrode for monitoring a panel temperature is parallely arranged with at least either one of a display electrode and a scan electrode, or an address electrode in a PDP. And, a resistance-value monitoring circuit for monitoring a resistance value of the temperature-monitoring electrode is connected to the temperature-monitoring electrode, and further, a temperature-converting circuit for converting the resistance value monitored by the resistance-value monitoring circuit into a temperature is connected to the resistance-value monitoring circuit. And, respective driver drives respective electrode with applying a driving waveform and/or a driving voltage suitable for the temperature converted by the temperature-converting circuit, so that a useless margin design is unnecessary, and as a result, a performance in a normal-use situation can be improved.08-05-2010
20110148837CHARGE CONTROL TECHNIQUES FOR SELECTIVELY ACTIVATING AN ARRAY OF DEVICES - Methods and apparatus are described by which charge may be delivered to an array of electromechanical devices (e.g., MEMS or NEMS) driven in parallel such that only a desired number of the devices are actuated. Specific embodiments relate to visual displays implemented using interferometric modulators (IMODs). In particular, spatial half-toning techniques for achieving grayscale in such displays are described that are not characterized by the power penalty associated with conventional spatial half-toning techniques.06-23-2011
20110187690Liquid Crystal Display and Gate Modulation Method Thereof - A gate modulation circuit is provided. A comparator compares a triangular wave voltage of a capacitor with a second reference voltage. If the triangular wave voltage of the capacitor exceeds the second reference voltage, a conduction path is turned off. A comparator controls desired discharge to a capacitor through a discharge resistor. Based on the discharge, power voltage (high level power voltage of the scanning driver) provided to the scanning driver is modulated, and outputted from the gate modulation circuit to the scanning driver as high level power voltage of the scanning driver.08-04-2011
20110187689METHOD FOR DRIVING ELECTRO-OPTIC DISPLAYS - A large area display comprises multiple sub-units arranged in rows and columns. Each sub-unit has associated row and column drivers, with the column driver driving the column electrodes of all the sub-units a column. A chip select means provides a separate chip select signal to each row of sub-units, so that only one row of sub-units are scanned at a time, and all the sub-units in the selected row are scanned simultaneously. Column data are supplied to the column drivers as a linear series of column data values; and delayed Gate Start Pulse signals are fed to the column drivers in each column of sub-units after the first so that these column drivers receive the delayed Gate Start Pulse signals and apply the appropriate column data values to their associated column electrodes.08-04-2011
20100020054TRIPLE MODE LIQUID CRYSTAL DISPLAY - In an embodiment, a system comprises an LCD comprising a plurality of pixels each comprising a transmissive part; a reflective part; and a latched driving circuit. The driving circuit comprises a transmissive section comprising a transmissive data input coupled to the transmissive part of the pixel, and is configured to drive a transmissive data value from the transmissive data input and to set the transmissive part to a transmissive display state based on the transmissive data value; a reflective section comprising a reflective data input (independent of the transmissive data input) coupled to the reflective part of the pixel, and is configured to drive a reflective data value from the reflective data input and to set the reflective part to a reflective display state based on the reflective data value.01-28-2010
20100020053DISPLAY MODULE AND DRIVING METHOD THEREOF - A display module includes a scan line, a data line, a driving circuit and a level converting circuit. The driving circuit has at least one first driving unit and at least one second driving unit electrically connected to the first driving unit. A non-DC signal is transmitted between the first driving unit and the second driving unit for controlling the first driving unit and/or the second driving unit. The first driving unit outputs a first driving signal to the scan line. The second driving unit outputs a second driving signal to the level converting circuit. The level converting circuit is electrically connected with the driving circuit and the data line, and outputs a display signal to the data line according to the second driving signal. A driving method of the display module is also disclosed.01-28-2010
20090256829System and Method for Detecting a Sampling Frequency of an Analog Video Signal - A system and method for detecting sampling frequency in a video signal. A method comprises applying a first test to determine the sampling frequency of the image signal, applying a second test to determine the sampling frequency of the image signal, and verifying the sampling frequency of the image signal. The first test compares detected timing characteristics of the image signal with known timing characteristics of a set of known standard image signals and the second test measures data characteristics of image data in the multiple image frames of the image signal. Combining both detected image characteristics and measured image characteristics based techniques to determine sampling frequency improves the possibility of correctly detecting an image signal's sampling frequency.10-15-2009
20110007049TFT, SHIFT REGISTER, SCAN SIGNAL LINE DRIVING CIRCUIT, AND DISPLAY DEVICE - A TFT includes, in at least one embodiment, a capacitor formed: so as to have a region where a first capacitor electrode connected to a source electrode and a second capacitor electrode connected to a gate electrode are arranged to be stacked in a thickness direction and mutually opposed across a first dielectric layer therebetween; and so as to have a region where the first capacitor electrode and a third capacitor electrode connected to the gate electrode are arranged to be stacked in the thickness direction and mutually opposed across a second dielectric layer therebetween with a coupling between the first capacitor electrode and the third capacitor electrode and a coupling between the first capacitor electrode and the second capacitor electrode formed over mutually opposite faces of the first capacitor electrode. This realizes a TFT which can save a footprint of a capacitor connected to a TFT body section.01-13-2011
20120146974PLASMA DISPLAY PANEL - A plasma display panel has a first substrate, plural pairs of display electrodes, a second substrate, and plural data electrodes. Each pair of the display electrodes is made up of a scanning electrode and a sustain electrode which are arranged parallel to each other on the first substrate. The second substrate is disposed opposite to the first substrate. A discharge space is formed between the first substrate and second substrate. The data electrodes are arranged in a direction perpendicular to the display electrodes on the second substrate. The data electrode is wider in peripheral portion of the second substrate than in a central portion of the second substrate.06-14-2012
20120306833DISPLAY DEVICE AND DRIVING METHOD THEREOF - A method for driving a display panel includes in a first time slot of a polarity inversion period turning on a plurality of first pixels in a first row via a first scan line, and providing a common voltage with a first potential; in a second time slot of the polarity inversion period turning on a plurality of second pixels in the first row via a second scan line, and providing the common voltage with a second potential; in a third time slot of the polarity inversion period turning on a plurality of first pixels in a second row via a third scan line, and providing the common voltage with the second potential; and in a fourth time slot of the polarity inversion period turning on a plurality of second pixels in the second row via a fourth scan line, and providing the common voltage with the first potential.12-06-2012
20120038603SHIFT REGISTER CIRCUIT - A shift register circuit includes plural stages of shift registers. Each stage of shift register includes a pull-up circuit, a control signal generator and a voltage-stabilizing circuit. The pull-up circuit is used for charging a first node. The control signal generator is electrically connected with the first node. According to a voltage level of the first node, a corresponding control signal is outputted from an output terminal of the control signal generator. The voltage-stabilizing circuit is electrically connected with the output terminal of the control signal generator for stabilizing the control signal from the control signal generator. Some circuits of some other shift registers are controlled according to the control signal.02-16-2012
20110316831BIDIRECTIONAL SHIFT REGISTER AND IMAGE DISPLAY DEVICE USING THE SAME - A plurality of cascaded unit register circuits which comprises a bidirectional shift register include main stages and dummy stages at the top before the main stages and dummy stages at the bottom after the main stages. A k-th stage outputs a pulse P12-29-2011
20110057911PLASMA DISPLAY PANEL DRIVING METHOD AND PLASMA DISPLAY APPARATUS - A plurality of display electrode pairs are divided into two display electrode pair groups I and II. One field is divided into M (M is an integer of 2 or more) sub-fields SFL (L=1 to M) each including a wall voltage adjusting period, an address period, and a sustain period. Based on a sustain period T1 of a K-th sub-field SFK and a wall voltage adjusting period T2 positioned between the sustain period T1 and the address period of a (K+1)-th sub-field, if T1>T2, a first driving method in which the sustain period T1 and the wall voltage adjusting period T2 are set for each of the display electrode pair groups I and II is used in the sub-field SFK, and if T103-10-2011
20110157118DRIVE CIRCUIT AND DISPLAY DEVICE - A drive circuit includes an input-side inverter circuit and an output-side inverter circuit connected to each other in series and inserted between a high voltage line and a low voltage line. The output-side inverter circuit includes a first transistor of a dual-gate first electro-conductive type having a drain connected to the high voltage line side and a source connected to an output side of the output-side inverter circuit. The output-side inverter circuit further includes a second transistor of a dual-gate second electro-conductive type having a drain connected to the high voltage line side and a source connected to the output side of the output-side inverter circuit. The output-side inverter circuit further includes a third transistor having a drain connected to the low voltage line side and a source connected to the output side of the output-side inverter circuit.06-30-2011
20110157117DRIVE CIRCUIT AND DISPLAY DEVICE - A drive circuit includes: an input-side inverter circuit and an output-side inverter circuit connected to each other in series and inserted between a high voltage line and a low voltage line. The output-side inverter circuit includes a CMOS transistor having a first gate and a second gate, in which a drain is connected to the high voltage line side and a source is connected to an output side of the output-side inverter circuit. The output-side inverter circuit further includes a MOS transistor in which a drain is connected to the low voltage line side and a source is connected to the output side of the output-side inverter circuit. The output-side inverter circuit further includes a correction circuit correcting a voltage of one or both of the two gates of the CMOS transistor.06-30-2011
20110090195DRIVING DEVICE AND DRIVING METHOD OF PLASMA DISPLAY PANEL, AND PLASMA DISPLAY APPARATUS - A driving device drives a plasma display panel having a plurality of discharge cells at intersections of a plurality of scan electrodes and a plurality of sustain electrodes with a plurality of data electrodes by a sub-field method. A scan electrode drive circuit applies a first ramp waveform that drops from a first potential to a second potential to the plurality of scan electrodes in a first period in a setup period of a sub-field. A sustain electrode drive circuit applies a second ramp waveform that drops from a fourth potential to a fifth potential to the plurality of sustain electrodes when a potential detection circuit detects that the plurality of scan electrodes attain a third potential that is lower than the first potential and higher than the second potential in the first period.04-21-2011
20090167739Active Matrix Substrate and Display Device Having the Same - One embodiment of the present invention is to prevent deterioration of display quality from occurring in a display device provided with an active matrix substrate even when a larger size or a higher resolution is employed and a drive frequency is increased. In an active matrix substrate of a liquid crystal display device, a discharge control signal line is disposed so as to be arranged along each gate line and discharge TFTs are provided for each source line in numbers equal to the number of the gate lines. The gate terminal, source terminal, and drain terminal of the discharge TFT are connected to the discharge control signal line, the storage capacitance line, and its adjacent source line, respectively. Each storage capacitance line is provided with the common potential Vcom. Each discharge control signal line is provided with a signal which turns on the discharge TFT for a predetermined period of every one horizontal period.07-02-2009
20120013585SHIFT REGISTER AND DISPLAY DEVICE USING THE SAME AND DRIVING METHOD THEREOF - A shift register includes a plurality of first to n-numbered stages, where n is a positive integer. Each stage includes a node controller controlling respective voltages of a first node and a second node in accordance with an output signal from the (i−j01-19-2012
20090135169Driver for displaying display data and display device using the driver - A driver includes a plurality of output portions; and an output switching control portion. The plurality of output portions is synchronized with a shift pulse signal. The shift pulse signal indicates one specification shift pulse signal among a plurality of specification shift pulse signals. The plurality of specification shift pulse signals indicates a plurality of output numbers which are different from each other based on respective specifications of the plurality of specification shift pulse signals. The one specification shift pulse signal indicates a setting output number as one output number among the plurality of output numbers. The output switching control portion selects a group of output portions corresponding to the setting output number among the plurality of output portions based on the one specification shift pulse signal. The group of output portions loads display data in synchronization with the shift pulse signal, and outputs output grayscale voltages corresponding to the display data to a display portion.05-28-2009
20090135168CIRCUIT FOR DRIVING LIGHT-EMITTING ELEMENT, AND CELLULAR PHONE - A light-emitting element driving circuit is installed on a second substrate, which is connected via a signal line to a first substrate, on which is mounted a CPU configured to generate an LED drive control signal. The light-emitting element driving circuit includes a pulse generation unit configured to start and stop an operation based on the LED drive control signal and output an LED drive signal when the pulse generation unit is in an active state, an LED oscillator configured to supply a reference pulse signal to the pulse generation unit, and an LED driver unit configured to cause a light-emitting element to perform a flickering operation based on the LED drive signal.05-28-2009
20120026142PLASMA DISPLAY PANEL DRIVE METHOD AND PLASMA DISPLAY DEVICE - The luminance of black level in an image displayed on a plasma display panel is reduced to enhance the contrast and image display quality. For this purpose, in an initializing period, one of a forced initializing waveform, a selective initializing waveform, and a non-initializing waveform is applied to scan electrodes. Further, one field is formed of a special initializing subfield where the forced initializing waveform and the non-initializing waveform are selectively generated, and a plurality of selective initializing subfields where only the selective initializing waveform is generated. The number of forced initializing waveforms applied to one scan electrode is one in one field group. The non-initializing waveform is applied to the scan electrodes on both sides of the scan electrode applied with the forced initializing waveform in a special initializing subfield, in at least two special initializing subfields, i.e. the special initializing subfield and a special initializing subfield immediately succeeding the special initializing subfield.02-02-2012
20120026141Bistable display apparatus and driving method - A bistable display with dot-matrix pixels is disclosed. The bistable display includes a front substrate, a plurality of first conductive electrodes, an electrophoretic medium layer, a plurality of second conductive electrodes, and a back substrate. The plurality of first conductive electrodes is disposed below the front substrate and parallel to each other along a first direction. The electrophoretic medium layer is disposed below the front substrate and the plurality of first conductive electrodes. The plurality of second conductive electrodes is disposed on the back substrate and parallel to each other along a second direction different from the first direction. A pixel is formed at each intersection of each first conductive electrode and each second conductive electrode.02-02-2012
20120154356Timing Controller, Source Driving Device, Panel Driving Device, Display Device and Driving Method - A source driving device, capable of reducing stand-by period and saving power consumption, includes a plurality of source drivers connected in series, which include one or more cascade source drivers. The one or more cascade source drivers include one or more first-type cascade source drivers, each of which, at different times to other first-type cascade source drivers, is respectively activated by a pulse signal generated by a previous source driver, and after the activation, is triggered by a frame signal to receive corresponding frame data in the frame signal. Each of the source drivers generates a pulse signal after receiving the corresponding frame data to activate the next source driver.06-21-2012
20120154357METHOD FOR DRIVING A GAS ELECTRIC DISCHARGE DEVICE - A method for driving a plasma display panel having at least three electrodes. The method includes applying a first pulse having a voltage changing with time in a positive direction and a second pulse having a voltage changing with time in a negative direction to a second main electrode in an address preparation period. The method also includes applying a scan pulse to the second main electrode in an address period. The method also includes at least one of the first and second pulses in the address preparation period has a stepwise waveform whose voltage rise or fall stepwise.06-21-2012
20120256893IMAGE DISPLAY DEVICE HAVING MEMORY PROPERTY - An image display device is provided which suppresses discomfort “flickering” in a process of renewing a screen to realize multiple gray level displaying including an intermediate color. Electrophoretic particles are made up of n-kinds of charged particles C10-11-2012
20110102394METHOD AND SYSTEM OF CONTROLLING HALT AND RESUME OF SCANNING AN LCD - A method and system of controlling halt and resumption of scanning actions of an LCD is disclosed. An incoming video source is monitored, and current scan line position and corresponding polarity are recorded. When an abnormal video source is detected, the LCD scanning is stopped at a halt scan line of a halt frame with a halt polarity. After a normal video source has been detected again, determination is made of a proper resumptive scan line and/or a resumptive polarity. The panel scanning is resumed at the resumptive scan line equal to the halt scan line and/or with the resumptive polarity matching the halt polarity.05-05-2011
20110102396ELECTROPHORETIC DISPLAY APPARATUS AND DRIVING METHOD THEREOF, AND ELECTRONIC DEVICE - An electrophoretic display apparatus is configured with an electrophoretic element sandwiched between a pair of substrates, and includes a scanning line and a data line extending in mutually intersecting directions and a pixel formed corresponding to the area where the scanning line and data line intersect. The pixel includes a pixel electrode, a select transistor whose gate is connected to the scanning line, and a driving transistor whose gate is connected to the data line directly or via another element; and a ramp waveform is inputted into the pixel electrode via the driving transistor.05-05-2011
20120120040Drive Device For Display Circuit, Display Device, And Electronic Apparatus - A drive device includes a plurality of latch circuits provided correspondingly to a plurality of signal lines respectively. A plurality of latch circuits each obtain a plurality of bit data at a time that constitute pixel data and output the plurality of bit data sequentially. A plurality of latch circuits each include a plurality of latch unit circuits arranged in series along the direction in which a plurality of signal lines extend and each configured to obtain one-bit data and transfer the one-bit data.05-17-2012
20120235968METHOD AND APPARATUS FOR LINE TIME REDUCTION - This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for reducing common line write time in a display. In one aspect, a common line write waveform shape is based at least in part on the distance a given common line is from a segment driver circuit.09-20-2012
20100245312ELECTRO-OPTICAL APPARATUS DRIVING CIRCUIT, ELECTRO-OPTICAL APPARATUS, AND ELECTRONIC DEVICE - An electro-optical apparatus driving circuit that drives an electro-optical apparatus including multiple rows of scanning lines, multiple columns of data lines, and multiple pixels provided corresponding to the locations at which the scanning lines and the data lines intersect. The driving circuit includes: a scanning line main driving circuit, provided on at least one end of the multiple rows of scanning lines, that selects the multiple rows of scanning lines in a predetermined order and applies scanning signals thereto; and a scanning line supplementary driving circuit, provided on at least one end of the both ends of the multiple scanning lines, that operates in response to a scanning signal being applied by the scanning line main driving circuit to a scanning line selected before or after the selection of a certain scanning line, the scanning line supplementary driving circuit applying a supplementary signal for shaping the waveform of the scanning signal to the certain scanning line during an interval in which the certain scanning line is selected and the scanning signal is applied thereto by the scanning line main driving circuit.09-30-2010
20120127143DRIVING DEVICE FOR LIQUID CRYSTAL DISPLAY PANEL - A driving device drives a liquid crystal display panel in which the number of source lines is by one larger than the number of columns of pixel electrodes and in which the columns of pixel electrodes are arranged between the source lines. The driving device has a configuration in which potential output terminals, in a central region, are not connected to any source line. A voltage follower is connected to an output switching section. Additionally, potential output terminals are connected through switches to input terminals, respectively. The switch connects a first terminal to a second terminal with control signal at a high level and connects the first terminal to a third terminal with at a low level.05-24-2012
20120127142LIQUID CRYSTAL DISPLAY AND INVERSION DRIVING METHOD - A liquid crystal display (LCD) ensuring excellent display quality and reducing power consumption is disclosed. The liquid crystal display (LCD) includes first and second polarity image display pixels, such that a polarity inversion of data is executed by line, column, and dot, and the polarity inversion of a common voltage is executed by frame. An inversion driving method using the liquid crystal display (LCD) is also disclosed.05-24-2012
20100207917DRIVING DEVICE, DRIVING METHOD AND PLASMA DISPLAY APPARATUS - In a plasma display panel apparatus, luminance when a display state of a panel is all-black (all pixels display black throughout one field period) is reduced.08-19-2010
20110181569Electro-optic display and related driving method thereof - The present invention discloses an electro-phoretic display comprising an electro-phoretic panel, a column driver, a row driver, for selecting a row to be driven; and a controller, for determining whether to update a pixel of a current frame according to a compared result between a pixel value of the pixel and a pixel value of a corresponding pixel of a previous frame; wherein, the column driver provides a data signal to the pixel and the row driver provides a selecting signal according to the pixel if the pixel needs to be updated.07-28-2011
20120212468METHOD AND APPARATUS FOR SENSING, MEASUREMENT OR CHARACTERIZATION OF DISPLAY ELEMENTS INTEGRATED WITH THE DISPLAY DRIVE SCHEME, AND SYSTEM AND APPLICATIONS USING THE SAME - Methods and systems for electrical sensing, measurement and characterization of display elements are described. An embodiment includes integrating the electrical sensing, measurement and characterization with the display drive scheme. This embodiment allows for measurement of DC or operational hysteresis voltages and/or response times of interferometric modulator MEMS devices, for example, to be fully integrated with the display driver IC and/or the display drive scheme. Another embodiment allows these measurements to be performed and used without resulting in display artifacts visible to a human user. Another embodiment allows the measurement circuitry to be integrated with the display driver IC and/or the display drive scheme re-using several existing circuitry components and features, thus allowing for integration of the measurement method and its use relatively easily.08-23-2012
20120133628Liquid Crystal Display Device and Driving Method Thereof - The present invention provides a LCD device including: a timing control unit; an oscillator which is included in the timing control unit and generates a clock frequency; a frequency divider which is included in the timing control unit and reduces the clock frequency supplied from the oscillator by dividing the clock frequency by at least 2; and a mode selection part which is included in the timing control unit and changes at least one driving mode of internal logic circuits by using the divided clock frequency supplied from the frequency divider.05-31-2012
20120133626Scan driver and method of driving the same - A scan driver of a display device may include a plurality of scan lines. The scan driver may include a plurality of stages configured to transmit scan signals to the scan lines. Each stage may include an input terminal for receiving a scan signal from a previous stage, an output terminal, an output unit, a sequential switching unit, and a simultaneous switching unit. The output unit may be coupled to the output terminal, and outputs a corresponding scan signal to the output terminal. The sequential switching unit may be coupled to the input terminal, and controls the output unit such that the output unit of each stage sequentially outputs the scan signals having a first voltage in a first period. The simultaneous switching unit may control the output unit such that the output unit of each stage simultaneously output the scan signals having a predetermined voltage in a second period.05-31-2012
20120133625METHOD FOR DRIVING CHOLESTERIC LIQUID CRYSTAL DISPLAY DEVICE - A method for driving a cholesteric liquid crystal display device is disclosed. The cholesteric liquid crystal display device includes a plurality of pixels. The method includes steps below. In a first duration, a first square wave is provided for the pixels. The first square wave has an amplitude of a first value. In a second duration, a second square wave is provided for each one of the pixels according to a required gray level of each one of the pixels. The second square wave has an amplitude of a second value. The second value is different from the first value. The first square wave and the second square wave are continuously provided. The method for driving the cholesteric liquid crystal display device according to the present invention is capable of displaying a motion picture and decreasing driving voltages.05-31-2012
20120169687Liquid Crystal Display Apparatus and Pixel Driving Method - A liquid crystal display apparatus and a pixel driving method are provided. The liquid crystal display apparatus comprises a pixel array, a scan driving circuit and a data driving circuit. The pixel array comprises a plurality of first pixels, a plurality of second pixels, a plurality of third pixels and a plurality of fourth pixels. The scan driving circuit is configured to activate the first pixels and the fourth pixels sequentially and then activate the second pixels and the third pixels sequentially. The data driving circuit is configured to supply a first polarity data signal when the first pixels and the fourth pixels are activated and supply a second polarity data signal when the second pixels and the third pixels are activated.07-05-2012
20120075276Plasma display apparatus and method of driving the plasma display apparatus - A plasma display apparatus and method are provided. The plasma display apparatus includes a plasma display panel in which first electrodes and second electrodes are arranged adjacently and third electrodes are arranged to cross the first and second electrodes. The method for driving a plasma display apparatus in which first electrodes and second electrodes are arranged adjacently and third electrodes are arranged to cross the first and second electrodes and in which one field comprises subfields having a reset period followed by an address period and a sustain period includes in a reset period, applying to second electrodes a voltage of a first waveform in which an applied voltage value increases according to a lapse of time and applying to second electrodes a voltage of a second waveform in which an applied voltage value decreases according to a lapse of time.03-29-2012
20120075275DISPLAY DEVICE WITH BI-DIRECTIONAL SHIFT REGISTERS - A display device having bi-directional shift registers is disclosed. The display device includes a display panel, a first dummy shift register set, a second dummy shift register set, a third dummy shift register sets, a fourth dummy shift register sets, a first valid shift register set coupled between the first dummy shift register set and the second dummy shift register set, a second valid shift register set coupled between the third dummy shift register set and the fourth dummy shift register set, and a first directional circuit coupled to a first valid register in the first valid register set and the third dummy shift register set.03-29-2012
20100271357PLASMA DISPLAY DEVICE - A scan-pulse generating circuit has a shift resister section that has 2N (i.e. twice the number of the driving-voltage waveforms) resisters and shifts the data of the resisters; an N-bit latching section that retains output from every other resister of 2N resisters of the shift resister section and generates N control pulses for generating scan pulses; and switching section that generates scan pulses according to N control pulses.10-28-2010
20100271358LCD BACKLIGHT DRIVING DEVICE WITH AN ISOLATING TRANSFORMER - An LCD backlight driving device with an isolating transformer comprises a DC power supply, a square wave generator, a square wave controller, said isolating transformer and a driver transformer; wherein said isolating transformer has a primary side connected to said square wave generator and a secondary side connected to said driver transformer, since said isolating transformer is placed between said square wave generator and said driver transformer, it helps to effectively shorten a safety distance required for setting up said driver transformer; the present invention uses said isolating transformer to shorten the safety distance required than that of using said driver transformer directly and to decrease an area in implementing a circuit board and to cut cost of said device.10-28-2010
20120249505METHOD AND APPARATUS FOR DRIVING AN ELECTROLUMINESCENT DISPLAY - Method, apparatus and systems for driving electroluminescent segments in electroluminescent displays are disclosed. Each segment in the display receives a series of first pulses alternating in polarity at a first electrode and a series of second pulses at a second electrode. Each of the second pulses corresponds to one of the first pulses and is opposite in polarity. The width of the second pulses corresponds to the parasitic resistance of the segment.10-04-2012
20120188213LIQUID CRYSTAL DISPLAY AND METHOD OF DRIVING THE LIQUID CRYSTAL DISPLAY - A liquid crystal display device (LCD), and a method of driving the LCD. The LCD includes: a display panel including a plurality of pixels defined as a plurality of gate lines and a plurality of data lines cross each other, wherein a storage capacitor of each of the plurality of pixels is connected to a front or rear gate line; a gate driver for generating a gate-on voltage by boosting a first input voltage in multi-stages, the gate-on voltage turns on a switching device of each of the plurality of pixels, and a gate-off voltage that turns off the switching device, and sequentially applying the gate-on voltage and the gate-off voltage to the plurality of gate lines; and a source driver for applying a data voltage to a data line connected to a pixel whose switching device is turned on.07-26-2012
20120188214TRANSMITTER CIRCUIT, TRANSMISSION CIRCUIT AND DRIVER UNIT - A transmitter circuit includes a driver circuit including a non-inverting output terminal and an inverting output terminal for outputting a signal current, which has a loop direction that changes based upon an input signal, to the non-inverting output terminal and the inverting output terminal and an output-waveform control circuit for detecting a waveform edge of the input signal and responding by increasing the signal current temporarily. The output-waveform control circuit includes a first inverter circuit receiving a non-inverted input signal, a first capacitor including one end connected to an output terminal of the first inverter circuit and another end connected to the inverting output terminal, a second inverter circuit receiving an inverted input signal, and a second capacitor including one end connected to an output terminal of the second inverter circuit and another end connected to the non-inverting output terminal.07-26-2012
20120081344ELECTRONIC DEVICE - An electronic device of the present invention includes a shift register SR provided integrally with a substrate, a first line 04-05-2012
20100321358LIQUID CRYSTAL DISPLAY - A liquid crystal display replaces the common electrodes of a conventional LCD with a plurality of switch electrodes. The plurality of switch electrodes is grouped into several switch electrode sets. Each of the switch electrode sets' potential is modulated by a different driving circuit. The driving circuits can also separately modulate the potentials of the switch electrode sets according to the scanning sequence of the LCD.12-23-2010
20110122113GATE DRIVING METHOD AND CIRCUIT FOR LIQUID CRYSTAL DISPLAY - A gate driving method for a liquid crystal display (LCD) and a gate driver thereof are provided. The LCD has a plurality of scan lines. The method starts by generating a gate driving signal. A correction signal is superposed to the gate driving signal to generate a corrected gate driving signal and to reduce a high voltage level of the gate driving signal, wherein a polarity of the correction signal is opposite to a polarity of the gate driving signal. The corrected gate driving signal is then outputted to drive one of the corresponding scan lines.05-26-2011
20110122112PLASMA DISPLAY AND DRIVING METHOD FOR PLASMA DISPLAY PANEL - Even in a plasma display panel of large screen size and high definition, address discharge is caused stably. A plasma display device has a plasma display panel and a scan electrode driving circuit. The plasma display panel includes a discharge cell having a display electrode pair that is formed of a scan electrode and a sustain electrode. A plurality of subfields having an initializing period, an address period, and a sustain period are disposed in one field period. The scan electrode driving circuit generates an increasing first ramp voltage in the initializing period of at least one subfield in one field period, generates sustain pulse voltage that varies from a base potential to a potential for causing sustain discharge in the sustain period, and generates second ramp voltage that is increased and is dropped immediately after reaching a predetermined potential at the end of the sustain period.05-26-2011
20080297498LIGHT-SOURCE DRIVING DEVICE AND ITS SIGNAL TRANSFORMING CIRCUIT AND PULSE GENERATING CIRCUIT - A light-source driving device includes a pulse controlling circuit, a signal adjusting circuit and a driving circuit. The pulse controlling circuit generates a first controlling signal and a second controlling signal. The signal adjusting circuit is coupled to the pulse controlling circuit and outputs a first switching signal, a second switching signal, a third switching signal and a fourth switching signal according to the first controlling signal and the second controlling signal, respectively. The driving circuit is coupled to the signal adjusting circuit and at least one light-emitting unit, and generates a driving signal to drive the light-emitting unit according to the first switching signal, the second switching signal, the third switching signal and the fourth switching signal.12-04-2008
20080297497CONTROL CIRCUIT AND METHOD OF LIQUID CRYSTAL DISPLAY PANEL - A control circuit of a liquid crystal display (LCD) panel and a method thereof are provided. The circuit includes a frame memory, a look-up table (LUT) module, and a signal processor. The frame memory provides a previous value of a pixel, and the previous value includes at least one bit of a previous frame data of the pixel. The LUT module provides a plurality of basic values according to the previous value and a current value of the pixel, and the current value includes at least one bit of a current frame data of the pixel. The signal processor produces a driving value according to the basic values and replaces the current frame data with the driving value.12-04-2008
20120320017DRIVING METHODS AND CIRCUIT FOR BI-STABLE DISPLAYS - The disclosure is directed toward driving methods and a driving circuit which are particularly suitable for bi-stable displays. In certain embodiments, methods provide the fastest and most pleasing appearance to the desired image while maintaining the optimal image quality over the life expectancy of an electrophoretic display device.12-20-2012
20110248976DISPLAY APPARATUS - A display apparatus which achieves high definition and has excellent resolution that the human eye feels is provided. In the display apparatus which comprises a display region on which a plurality of display devices are arranged in a matrix, the plurality of display devices include a first display device, a second display device and a third display device, and are arranged in order of the first display device, the second display device, the third display device, the third display device, the second display device and the first display device in a first direction, luminescent colors of the first display device, the second display device and the third display device are different from others, and the display apparatus comprises a low-pass filter circuit configured to modulate an image signal to be input to the display region.10-13-2011
20110157119DRIVE CIRCUIT AND DISPLAY DEVICE - The present invention provides a drive circuit and a display device realizing reduced variations in both a trailing timing and a rising timing of output voltage. The drive circuit includes an input-side inverter circuit and an output-side inverter circuit connected to each other in series and inserted between a high-voltage line and a low-voltage line. The output-side inverter circuit includes: a first transistor having a drain connected to the high-voltage line side and a source connected to an output side of the output-side inverter circuit; a second transistor having a drain connected to the low-voltage line side and a source connected to an output side of the output-side inverter circuit; and a correction circuit correcting gate voltage of the first and second transistors.06-30-2011
20120320016THREE-DIMENSIONAL IMAGE DISPLAY DEVICE, THREE-DIMENSIONAL IMAGE DISPLAY SYSTEM, AND METHOD FOR DRIVING THREE-DIMENSIONAL IMAGE DISPLAY DEVICE - Disclosed is a liquid crystal display device (12-20-2012
20120327053PLASMA DISPLAY DEVICE, PLASMA DISPLAY SYSTEM, DRIVE METHOD FOR PLASMA DISPLAY PANEL, AND CONTROL METHOD FOR SHUTTER GLASSES FOR PLASMA DISPLAY DEVICE - Sharp contrast is achieved while the driving time in displaying a 3D image on a plasma display panel is shorted. For this purpose, an all-cell initializing subfield for applying up-ramp waveform voltage and down-ramp waveform voltage to a scan electrode in the initializing period is set as the first subfield of one field. The plasma display panel is driven by one of 3D drive and 2D drive. A gradient of at least one of the up-ramp waveform voltage and the down-ramp waveform voltage in the all-cell initializing period during the 3D drive is set to be steeper than a gradient of the one waveform voltage in the all-cell initializing period during the 2D drive. A shutter opening/closing timing signal is generated so that both of a right-eye timing signal and a left-eye timing signal are in the OFF state in the all-cell initializing period during the 3D drive.12-27-2012
20120287098ELECTRO-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.11-15-2012
20120133627LIQUID CRYSTAL DISPLAY DEVICE - An LCD device is discussed in which a level shifter generates two switching signals, and transmits the generated signals to a gate driver of a liquid crystal display panel by the use of one voltage signal transmitted from a timing controller. The LCD device according to an embodiment includes a liquid crystal display panel in which a gate driver for alternately driving two transistors is formed; a data driver which drives data lines of the liquid crystal display panel; a timing controller which generates one voltage signal for switching the two transistors, and outputs the one voltage signal; and a level shifter which generates two of first and second switching signals to switch the two transistors by using the one voltage signal, and outputs the generated switching signals to the gate driver.05-31-2012
20080252631Driver of display unit - According to one aspect of the present invention, there is provided a driver of a display unit including a latch circuit holding gradation information, a D/A converter outputting analog signal based on the gradation information held by the latch circuit, a test circuit provided between the latch circuit and the D/A converter, the test circuit inputting or outputting test signal regarding the latch circuit, a switch connecting voltage output of the D/A converter and a driver output terminal in normal operation, and a test switch connecting the test circuit and the driver output terminal in test operation and disconnecting the test circuit and the driver output terminal in normal operation.10-16-2008
20080231620Active Matrix Display Device - A display device comprising an array of pixels, with gates of thin film transistors of the pixels in a row connected to a row conductor. Row driver circuitry provides row address signals for controlling the switching of the transistors of the pixels of the row including an ON gate voltage and an OFF gate voltage. Control circuitry shifts the ON gate voltage and the OFF gate voltage in dependence on drive and/or environmental conditions such as temperature and/or refresh rate. The control circuitry maintains a constant difference between the ON gate voltage and the OFF gate voltage. This allows the gap between the on and off voltages to be reduced, which results in power savings. The kickback voltage is kept constant so that kickback compensation is kept simple.09-25-2008
20130169608DISPLAY APPARATUS AND CONTROLLING METHOD THEREOF - An image processing apparatus and a method of controlling the same are provided. The image processing apparatus includes: one or more receiving units which receive a plurality of contents; a signal processing unit which outputs a first image frame by processing first content of the plurality of contents and outputs a second image frame by processing second content of the plurality of contents; an output unit which outputs a plurality of contents views by combining the first image frame and the second image frame; and a control unit which, if a sharing restriction command regarding a first contents view from among the plurality of contents views is obtained, restricts matching of a glasses apparatus with the first contents view.07-04-2013
20080225030Display with multiplexed pixels and driving methods - A multiplexed pixel display includes a plurality of pixel electrodes, a plurality of storage elements, a first voltage supply terminal, a second voltage supply terminal, a common electrode, and a plurality of multiplexers each selectively coupling an associated one of the pixel electrodes with one of the first voltage supply terminal and the second voltage supply terminal responsive to a value of a data bit stored in an associated one of said storage elements. A controller is configured to sequentially write each bit of multi-bit data words to the storage elements, and assert, while each bit is stored in the storage elements, a first predetermined voltage on the first voltage supply terminal, a second predetermined voltage on the second voltage supply terminal, and a third predetermined voltage on the common electrode, for a time dependent on the significance of the stored bit. Various alternate controllers facilitate the use of additional driving schemes.09-18-2008
20080225029Driver for reducing a noise, display device having the driver, and method thereof - A driver may include a plurality of data output units and/or a multi-phase clock generator. The plurality of data output units may be configured to output data based on a plurality of clock signals. The multi-phase clock generator may be configured to receive a master clock signal to generate the plurality of clock signals having different phases in a period of the master clock signal and/or to provide the clock signals to the data output units. A number of the clock signals may correspond to a number of the data output units.09-18-2008
20130135270METHOD FOR UPDATING IMAGE FRAMES AND DISPLAY DEVICE - A method for updating image frames displayed on a display device including charged particles is provided and includes steps as below. A first image frame is displayed according to a first image data value. A second image frame is displayed according to a second image data value. Whether an image frame switching period between the first image frame and the second image frame is less than or equal to a predetermined period is determined to decide an updating manner for the second image frame displayed on the display device. When the image frame switching period is greater than the predetermined period, a reset pulse and a second data pulse are sequentially generated such that the display device operates in a second updating mode. A display device is also disclosed herein.05-30-2013
20130181963DRIVING APPARATUS - A driving apparatus applied in a liquid crystal display are disclosed. Its first channel includes a first latching module, a first level-shifting module, a P-type digital/analog converting module, a first R07-18-2013
20100289785DISPLAY APPARATUS - In one embodiment of the present invention, a display apparatus includes a liquid crystal display panel including: video signal lines to supply a data signal; scanning signal lines provided so as to intersect the video signal lines; and pixel electrodes provided at intersections of the video signal lines and the scanning signal lines via switching elements, respectively; and a scanning signal line drive circuit for supplying a scanning signal to each of the scanning signal lines. The display apparatus further includes a slope generating circuit which generates a falling slope signal in accordance with the signal delay transfer characteristic of the scanning signal lines, determined by the length of the display panel. The falling slope signal controls a scanning signal so that the scanning signal has a substantially equal slope at its fall regardless of its position on each scanning signal line. The falling slope signal is supplied to the scanning signal line drive circuit. The slope generating circuit includes an EEPROM which variably sets the timing of the rising edge of the scanning signal and the timing of the slope falling edge of the scanning signal.11-18-2010
20100309183LIQUID CRYSTAL DISPLAY, CONTROL METHOD THEREOF AND ELECTRONIC DEVICE - A liquid crystal display includes liquid crystal elements in which a liquid crystal layer is sandwiched by a first electrode and a second electrode, a driving circuit configured to alternately apply higher and lower voltages than a predetermined voltage to the first electrode, and, at the same time, to apply the predetermined voltage to the second electrode, and a control circuit configured to compare a first current with a second current, the first current being obtained by excluding an instantaneous current due to a related higher voltage from currents flowing through the second electrode after the higher voltage is applied to the first electrode, and the second current being obtained by excluding an instantaneous current due to a related lower voltage from currents flowing through the second electrode after the lower voltage is applied to the first electrode, and to control the predetermined voltage based on the comparison result.12-09-2010
20100309182DISPLAY APPARATUS AND METHOD OF DRIVING THE SAME - A display apparatus includes a display part, a signal control part, data driving parts, and first and second wiring pairs. The display part includes pixels. The signal control part includes a transmission part that converts an image signal into a multi-level signal. The data driving parts receive the multi-level signal from the transmission part, convert the multi-level signal into a reproduced image signal and provide the pixels with the reproduced image signal. The first and second wiring pairs connect the transmission part and at least one data driving part of the data driving parts. The multi-level signal includes serial data of the image signal and an embedding clock embedded in the serial data. A voltage level of the serial data in the multi-level signal is different from a voltage level of the embedding clock in the multi-level signal.12-09-2010
20100309181Integrated and Simplified Source Driver System for Displays - An integrated and simplified source driver system includes a scan driver and a data driver. The data driver has a signal controller and a plurality of data driver units each of which has a converter. The converter can convert a first control signal into display data, a driver-unit control signal and a second control signal. The data driver unit can correspondingly send a data drive signal to one of thin film transistors according to the display data and the driver-unit control signal. The second control signal is sent to the scan driver for generating a scan drive signal which is correspondingly sent to one of the thin film transistors. In a preferred embodiment, the first control signal includes an integrated drive-unit control command.12-09-2010
20100309180DISPLAY DEVICE AND CIRCUITRY FOR AND METHOD OF DRIVING THE SAME - In a multi layer display device, at least two display material layers are concurrently driven while cross talk prevention and/or image quality adjustment is achievable by adjusting at least one of voltage, pulse width or repetition rate of the driving waveforms.12-09-2010
20120274618Pixel Structure and a Driving Method Thereof - A pixel structure and its related driving method are proposed. The pixel structure comprises a first transistor, a second transistor, a liquid crystal capacitor, a first storage capacitor, and a second storage capacitor. The first transistor comprises a gate coupled to a first scan line, a source coupled to a data line, and a drain coupled to the first storage capacitor. The first transistor is used for conducting the data line and the first storage capacitor. The second transistor comprises a gate coupled to a second scan line, a source coupled to the first storage capacitor, and a drain coupled to the second storage capacitor. A first polarity voltage applied on the data line is stored into the first storage capacitor during a first time period which the first transistor is turned on. The first storage capacitor discharges due to a connection between the first capacitor and the second capacitor during a second time period which the second transistor is turned on. By using such driving method, the difference in voltage between the liquid crystal capacitor and a common voltage is reduced from charge sharing for improving a color washout effect of the LCD panel.11-01-2012
20110234560Display Device and Driving Method Thereof - A display device includes a signal controller processing an input image signal and an input control signal and outputting an image signal and a control signal. A gray voltage generator generates reference gray voltages. The control signal includes a selection signal. A data driver generates gray voltages based on the reference gray voltage, selects a gray voltage corresponding to the image signal among the generated gray voltages, and applies the selected gray voltage to a pixel as a first data voltage. The data driver applies a black data voltage corresponding to a black image to the pixel according to the selection signal.09-29-2011
20100315396TIMING CONTROLLER, DISPLAY AND CHARGE SHARING FUNCTION CONTROLLING METHOD THEREOF - A display, which includes a display panel, a timing controller, and a source driver is provided. The timing controller analyzes gray level distribution of a video data to obtain an analysis result. The source driver is coupled between the display panel and the timing controller for driving the display panel to display a corresponding frame according to a video signal provided by the timing controller, and further the timing controller enables or disables a charge sharing function of the source driver in the display according to the analysis result. As a result, the charge sharing function is enabled optionally during different charge sharing periods, and thus the power consumption and the operation temperature of the source driver could be reduced as compared with the prior art.12-16-2010
20130120333METHOD OF ESTABLISHING LOOK-UP TABLE FOR ELECTROPHORETIC DISPLAY AND DEVICE THEREOF - A method of establishing a look-up table for an electrophoretic display is disclosed. The method is for establishing a plurality of driving waveforms of the electrophoretic display to the look-up table. The method includes dividing the plurality of driving waveforms to a plurality of time intervals according to a plurality of voltage values of the plurality of driving waveforms. The method also includes preparing a plurality of voltage waveform records according to the plurality of the voltage values and numbers of a unit times of the corresponding time intervals, and storing the plurality of voltage waveform records into the look-up table. Therefore, the storing capacity occupied by the look-up table of the electrophoretic display may be saved.05-16-2013
20130120334DISPLAY DRIVING DEVICE AND DISPLAY SYSTEM WITH IMPROVED PROTECTION AGAINST ELECTROSTATIC DISCHARGE - A display driving device a driving unit, an output unit, and an output control unit. The driving unit includes a first buffer and a second buffer generating a first driving voltage and a second driving voltage, respectively. The output unit includes a first output pad and a second output pad to which voltages are respectively applied via first second data driving paths, respectively, and which output the voltages to outside. The output control unit includes a charge share path that connects the first output pad and the second output pad. Each of the first data driving path and the second data driving path includes a first electro-static discharge (ESD) protection element, and the charge share path includes a second ESD protection element that is disposed separately from the first data driving path and the second data driving path.05-16-2013
20110310074BIDIRECTIONAL SHIFT REGISTER AND IMAGE DISPLAY DEVICE USING THE SAME - A bidirectional shift register outputs pulses from a plurality of cascaded unit register circuits in a shift order which is one of a forward direction and a reverse direction. A λth stage of unit register circuit (12-22-2011
20130100099ADAPTIVE LINE TIME TO INCREASE FRAME RATE - This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for determining a line time for writing data to display elements on one or more common lines of an array of display elements. In one aspect, the line time is determined for writing data to a line of display elements based on the received image data to be written to the line of display elements.04-25-2013
20120086686DISPLAY DRIVING CIRCUIT, DISPLAY DEVICE AND DISPLAY DRIVING METHOD - A display driving circuit that carries out CC driving is configured such that retaining circuits are provided in such a way as to correspond one-by-one to their respective stages of a shift register, that a polarity signal CMI is inputted to each of the latch circuits, that when an internal signal Mn generated by a shift register at the nth stage becomes active, a latch circuit corresponding to the nth stage loads and retains the polarity signal CMI, that an output signal SRBOn from the shift register at the nth stage is supplied as a scanning signal to a gate line connected to pixels corresponding to the (n+1)th stage, and that an output from latch circuit corresponding to the nth stage is supplied as CSOUTn to a CS bus line forming capacitors with pixel electrodes of pixels corresponding to the nth stage.04-12-2012

Patent applications in class Waveform generator coupled to display elements

Patent applications in all subclasses Waveform generator coupled to display elements