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Field period polarity reversal

Subclass of:

345 - Computer graphics processing and selective visual display systems

345204000 - DISPLAY DRIVING CONTROL CIRCUITRY

345208000 - Waveform generator coupled to display elements

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DocumentTitleDate
201201696883D DISPLAY AND DRIVING METHOD THEREOF - A three-dimensional (3D) display including a display panel and a micro lens array is provided. The display panel includes a plurality of scan lines, a plurality of data lines, and a sub-pixel array. The sub-pixel array includes a plurality of sub-pixels arranged in an array. The sub-pixels arranged in any row are electrically connected to the same scan line. Each two sub-pixels in any column are electrically connected to an adjacent data line on a different side alternately. Polarity distribution of the sub-pixels is cyclically repeated in a row direction by one sub-pixel, and polarity distribution of the sub-pixels is cyclically repeated in a column direction by two sub-pixels. The micro lens array includes a plurality of lens units. An image displayed by the display panel produces a left-eye image and a right-eye image after passing through the micro lens array. Furthermore, a driving method is also provided.07-05-2012
20100097362DISPLAY APPARATUS INCLUDING PASSIVE MATRIX DISPLAY ELEMENT - A display having a passive matrix display element and capable of supporting full-color display includes a passive matrix display element 04-22-2010
20130033473DISPLAY DEVICE FOR ACTIVE STORAGE PIXEL INVERSION AND METHOD OF DRIVING THE SAME - A pixel circuit is disclosed that includes a video mode, a memory mode and an inversion mode of operation. The pixel circuit includes a pixel storage node for storing data to be output by a liquid crystal cell, a pixel write circuit configured to receive display data and provide the display data to the pixel storage node for storage thereon. Further, the pixel circuit includes a hold circuit operatively coupled to the pixel write circuit and configured to minimize leakage of charge from the pixel storage node through the pixel write circuit, and an internal inversion circuit operatively coupled to the hold circuit and the pixel storage node and configured to invert a voltage of the data stored on the pixel storage node and a voltage applied to a liquid crystal cell that receives data stored on the pixel storage node.02-07-2013
20100328285LIQUID CRYSTAL DISPLAY APPARATUS AND METHOD OF DRIVING LIQUID CRYSTAL DISPLAY APPARATUS - A liquid crystal display apparatus includes a pixel array section having a plurality of scanning lines disposed in rows, a plurality of signal lines disposed in columns, a plurality of pixel circuits, a plurality of liquid crystal elements, and a plurality of common connection lines, and a drive circuit section having a scanning line drive circuit, a signal line drive circuit, and a common connection line drive circuit. The drive circuit section drives each of the pixel circuits so that a holding period in each frame period has a period during which a voltage of one liquid crystal element falls and a period during which the voltage rises.12-30-2010
20120182279DISPLAY DEVICE - A display device includes: plural pixel groups each including pixel circuits; plural scanning lines that are each connected to the pixel circuits included in any one of the pixel groups; a clock signal supply circuit that supplies a clock signal including a pulse signal; a shift register circuit that selectively transmits the pulse signal to the scanning lines in a predetermined order; and data signal lines that are connected to the pixel circuits and that supply a data signal to the pixel circuits included in the pixel group to be scanned. The period of the pulse signal supplied to some of the scanning lines is longer than the period of the pulse signal supplied to the other scanning lines, or the data signal is transmitted by the transistors included in the pixel circuits.07-19-2012
20120306835LIQUID CRYSTAL DISPLAY DEVICE, DISPLAY METHOD, DISPLAY PROGRAMME, AND COMPUTER READABLE RECORDING MEDIUM - The liquid crystal display device (12-06-2012
20120223926POWER-SUPPLY CIRCUIT AND LIQUID CRYSTAL DISPLAY DEVICE PROVIDED THEREWITH - An object is to provide at low cost a Power-supply circuit that can generate positive and negative analog power source voltages of which absolute values of voltage values are equal.09-06-2012
20110007050IMAGE DISPLAY APPARATUS AND IMAGE DISPLAY METHOD - When displaying moving images by using liquid crystal panels and others, a problem exists in that tail streaks occur, and image degradation is resultantly caused. To solve this problem, an echo suppression circuit divides a video signal into a pair composed of two successive frames for comparison between these two frames in signal level for the purpose of suppressing an echo phenomenon occurring when a liquid crystal panel displays video signals including moving images. If these two frames are not the same in signal level, the signal is accordingly corrected so as to equalize the signal level of these frames. Based on the video signals and others corrected by the echo suppression circuit, a controller operates the liquid crystal panel with AC drive through a source driver and a gate driver. As such, the drive voltage used to operate the liquid crystal panel with AC drive is adjusted so as to be balanced between positive and negative. In this manner, the tail streaks are prevented when displaying moving images.01-13-2011
20120113076ELECTRO-OPTICAL APPARATUS AND ELECTRONICS DEVICE - Pairs of a TFT and a pixel electrode, the number of which is (m×n), are provided. The TFT has a gate electrode connected to a scanning line, a source electrode connected to a data line, and a drain electrode connected to the pixel electrode. The pixel electrodes are arrayed in a matrix of m rows and n columns. Each of the pixel electrodes on any column is alternately electrically connected to either of two adjacent data lines via the TFT.05-10-2012
20110141082ELECTROPHORETIC DISPLAY DEVICE, DRIVING METHOD OF ELECTROPHORETIC DISPLAY DEVICE, AND ELECTRONIC DEVICE - An electrophoretic display device includes an electrophoretic element having an electrophoretic layer interposed between a plurality of pixel electrodes and a common electrode, a storage capacitor and a selection transistor provided corresponding to each of the pixel electrodes for each pixel, a capacity line connected to an electrode of the storage capacitor, and a control unit controlling potentials at the pixel electrodes, the common electrode, and the capacity lines, wherein the control unit performs a potential writing operation of writing a predetermined potential in the storage capacitor and the pixel electrode during an image display period when images are displayed on a display region where the pixels are arranged, and a potential changing operation of changing a potential at the capacity line from a first potential to a second potential after the selection transistor is turned off.06-16-2011
20110279427LIQUID CRYSTAL DISPLAY DEVICE AND ELECTRONIC APPLIANCE - An object of one embodiment of the present invention is to provide a liquid crystal display device using the common inversion driving that allows the amplitude voltage of a scan signal on a scan line to be low. The device including a first transistor having a gate, a first terminal, and a second terminal electrically connected to a scan line, a signal line, and a first electrode of a liquid crystal element, respectively; and a second transistor having a gate, a first terminal, and a second terminal electrically connected to the scan line, a common potential line, and a second electrode of the element, respectively. An image signal is supplied from the signal line to the first electrode to subject the element to inversion driving. A common potential is supplied from the common potential line to the second electrode in synchronization with supply of the image signal.11-17-2011
20110298769LIQUID CRYSTAL DISPLAY DRIVING CIRCUIT WITH LESS CURRENT CONSUMPTION - An LCD driving circuit includes a first buffer configured to have a terminal for a first voltage, a terminal for a second voltage and a terminal for an intermediate voltage between the first voltage and the second voltage, and be driven in a range from the first voltage to the intermediate voltage; and a second buffer configured to have a terminal for the first voltage, a terminal for the second voltage and a terminal for the intermediate voltage, and be driven in a range from the intermediate voltage to the second voltage. The terminal for the intermediate voltage of the first buffer and the terminal for the intermediate voltage of the second buffer are connected with each other, and the first voltage is a highest voltage, the second voltage is a lowest voltage, and the intermediate voltage is in a range from the first voltage to the second voltage.12-08-2011
20120098807ACTIVE LEVEL SHIFT DRIVER CIRCUIT AND LIQUID CRYSTAL DISPLAY APPARATUS INCLUDING THE SAME - An active level shift (ALS) driver circuit and a liquid crystal display apparatus including the ALS driver circuit are disclosed. The ALS driver circuit includes an input unit configured to apply a first polarity voltage to a first node and to apply a second polarity voltage to a second node, a level compensation unit configured to adjust the voltages of the first node and the second node, and an output unit configured to alternately output a first power voltage and a second power voltage according to the adjusted voltages of the first and second nodes.04-26-2012
20110292012METHOD FOR DRIVING LIQUID CRSYTAL DISPLAY AND LIQUID CRSYTAL DISPLAY USING SAME - An exemplary liquid crystal display (LCD) provides data lines, gate lines, and pixel units arranged as a matrix array. A method for driving the LCD includes a step of analyzing and determining polarities of one column of the pixel units as determining pixels, thereby defining a first polarity group and a second polarity group, and a step of sequentially applying corresponding data signals to a part of the whole pixel units that are arranged at same rows with the first polarity group in a part of a period of a frame. Corresponding data signals are sequentially applied to the other part of the whole pixel units that are arranged at same rows with the second polarity group in another part of a period of a frame.12-01-2011
20110193842LIQUID CRYSTAL DISPLAY AND METHODS OF DRIVING SAME - A liquid crystal display (LCD) and methods of driving same. In one embodiment, the LCD) includes a plurality of gate lines, {G08-11-2011
20100079429Liquid crystal display - A liquid crystal display which may suppress image quality deterioration and enhance image contrast is provided. The liquid crystal display includes: a light source unit including a light source having divided lighting sections and a light source control section; a liquid crystal display panel including pixels and modulating light from the light source; and a display driving section performing a polarity inversion driving based on the inputted video signal. The display driving section corrects the inputted video signal, for each of divided display regions in the liquid crystal display panel corresponding to ON-state divided lighting sections, based on a light control signal from the light source control section, so that a amplitude center potential of the driving voltage with a waveform of alternately-inverting polarity substantially agrees with the common potential. The driving voltage based on a corrected video signal is then applied to the liquid crystal element.04-01-2010
20110169797LIQUID CRYSTAL DISPLAY AND DRIVING METHOD THEREOF - A liquid crystal display device includes a liquid crystal display panel including a plurality of data lines to which a data voltage is supplied, a plurality of gate lines to which a gate pulse is supplied, and a plurality of liquid crystal cells, a data drive circuit to invert a polarity of the data voltage in response to a polarity control signal and to output the data voltage to the data lines in response to a source output enable signal, a gate drive circuit to supply the gate pulse to the gate lines, and a POL/SOE logic circuit to invert the polarity control signal for every frame period except at Nth-multiple frame period (where N is a positive integer), wherein the POL/SOE logic circuit controls the polarity control signal at every Nth-multiple frame period such that the polarity of the data voltage is the same as the previous frame period and controls a pulse width of the source output enable signal at every Nth-multiple frame period to be longer than for the other frame periods.07-14-2011
20090262100LIQUID CRYSTAL DISPLAY AND DRIVING METHOD THEREOF - A liquid crystal display includes a gate driver, a data driver and a pixel matrix. The gate driver is for outputting a plurality of gate signals successively. The data driver is for providing a plurality of data signals. The pixel matrix includes a number of pixels. Each pixel includes a first sub-pixel, a second sub-pixel and a voltage coupling device. The voltage coupling device is coupled between the first sub-pixel and the second sub-pixel such that pixel voltages of the first sub-pixel and the second sub-pixel are different and have relevant variation.10-22-2009
20130100100METHOD AND DEVICE FOR REDUCING EFFECT OF POLARITY INVERSION IN DRIVING DISPLAY - This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for reducing artifacts in an image generated by a display device. In one aspect, data is written to a display and a position of display elements is maintained based on the application of a bias voltage pattern. The bias voltage pattern includes alternating polarities along one dimension in a pattern having a first frequency spectrum, and alternating polarities along a second dimension in a pattern having a second frequency spectrum that is different than the first frequency spectrum. At least one of the first and second frequency spectrums may include a plurality of frequency components.04-25-2013
20100103154DISPLAY APPARATUS INCLUDING PASSIVE MATRIX DISPLAY ELEMENT - A display apparatus includes a passive matrix display element and can support full-color display. The apparatus includes a passive matrix display element 04-29-2010
20100271359LIQUID CRYSTAL DISPLAY DEVICE, AND METHOD OF DRIVING LIQUID CRYSTAL DISPLAY DEVICE - The present invention provides a liquid crystal display device including: a pixel array including a plurality of scanning lines arranged in rows, a plurality of signal lines arranged in columns, a plurality of liquid crystal elements arranged in a matrix corresponding to an intersection of each scanning line and each signal line, and a plurality of common connection lines arranged one by one corresponding to the liquid crystal elements of each line; a scanning line drive circuit; a signal line drive circuit; and a common connection line drive circuit electrically separating, from each other, one or a plurality of common connection lines (first common connection lines), and a plurality of common connection lines (second common connection lines), and electrically connecting the plurality of second common connection lines to each other to independently drive the first common connection line and the second connection lines from each other.10-28-2010
20080278469Display Panels Driving Apparatus and Method - A device such as a smart card (11-13-2008
20080291189Liquid crystal display device and driving method thereof - A liquid crystal display (LCD) device includes a liquid crystal display panel having a matrix of liquid crystal cells defined by crossings of the data lines and the gate lines. The LCD device includes a data driving circuit for inverting a polarity of a data voltage in response to a polarity control signal, and supplying the polarity-inverted data voltage to an associated one of the data lines in response to a source output enable signal; a gate driving circuit for sequentially supplying a scan voltage to each of the gate lines in response to a gate output enable signal; and a controller for modulating the polarity control signal such that data voltages having the same polarity are respectively supplied to liquid crystal cells along one gate line in consecutive frame periods and generating the source output enable signal and the gate output enable signal.11-27-2008
20120293476METHOD OF DRIVING DISPLAY PANEL AND DISPLAY APPARATUS FOR PERFORMING THE SAME - A method of driving a display panel includes outputting a gate signal to a gate line of the display panel, outputting a data voltage having an offset value of a first polarity to a first pixel during a P-th frame, and outputting a data voltage having an offset value of a second polarity opposite to the first polarity to a second pixel during the P-th frame, where P is a natural number, the first pixel and the second pixel are connected to a same data line of the display panel, and the offset value of the first polarity and the offset value of the second polarity compensate for each other.11-22-2012
20080284769Method of driving image display,driving device for image display, and image display - An image display according to the present invention includes a driving device which performs pulse width modulation drive, restrains power consumption, and produces a good multi-tone display. The image display makes the difference between the scan line voltage and the signal line voltage equal in positive polarity writing and negative polarity writing by which pixels are AC driven, so as to make the on-resistances of transistors equal. This allows a maximum pulse width, the size of switching elements, etc. to be determined first so that they match positive polarity writing in which the resistances value of the switching elements rise. No high frequency clock is required to produce subtle differences of charge ratio in negative polarity writing in which the resistances of the switching elements fall. Power consumption which depends on the clock frequency drops too.11-20-2008
20090128533Active Matrix Substrate and Display Device Having the Same - In at least one embodiment of the present invention, deterioration of display quality is prevented 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 charge sharing control signal line is disposed so as to be arranged along each gate line and charge sharing TFTs are provided for each source line in numbers equal to the number of the gate lines. The gate terminal of the charge sharing TFT is connected to the charge sharing control signal line and the source and drain terminals are connected with neighboring source lines via connection electrode portions, respectively. Each of the charge sharing control signal lines is provided with a signal which turns on the charge sharing TFT for a predetermined period of every one horizontal period.05-21-2009
20090015575Method for Controlling a Display Panel by Capacitive Coupling - A method comprising emission periods during which a predetermined emission voltage which presents a first polarity, is applied and sustained at the control terminal of at least one driver of said panel, and depolarization periods during which a predetermined depolarization voltage which presents a second polarity, opposite to the first polarity, is applied and sustained at the control terminal of at least one driver of said panel, the address signals of the circuits of said panel being transmitted by capacitive coupling of the address electrodes to the control terminals of these circuits. The invention makes it possible to use conventional and inexpensive means of controlling the address electrodes.01-15-2009
20110227889ORGANIC LIGHT EMITTING DISPLAY - An organic light emitting display includes a scan driver for driving scan lines and emission control lines, a data driver for driving data lines, a display unit including pixels at crossing regions of scan lines and data lines, first power source lines coupled to a first power source configured to supply a first voltage and coupled to pixels in columns, horizontal power source lines extending in a direction parallel with scan lines and coupled to pixels in rows, and a second power source line coupled to the horizontal power source lines and to a second power source configured to supply the same voltage as the first power source, each of the pixels being configured to store a voltage corresponding to voltages of the second power source and a data signal and to control an amount of current that flows from the first power source in accordance with the stored voltage.09-22-2011
20090201277Transmission Signal Generating Method and Related Apparatus for a Display Device - The present invention provides a transmission signal generating method for a display device to compensate channel effect. The transmission signal generating method includes using a plurality of signal amplitudes and a first signal direction to generate a plurality of positive levels, using the plurality of signal amplitudes and a second signal direction to generate a plurality of negative levels, and using a plurality of signaling lines for transmission of the pluralities of negative and positive levels. A first positive level and a first negative level both have a minimum signal amplitude of the plurality of signal amplitudes. The amplitude difference of the first positive and negative levels is greater than an amplitude difference of any two neighboring levels of the plurality of negative levels and also the plurality of positive levels.08-13-2009
20110221727METHOD OF DRIVING DISPLAY PANEL AND DISPLAY APPARATUS FOR PERFORMING THE SAME - A display panel includes first and second data lines and a first pixel column containing pixels that are alternately connected to the first and second data lines. In a method of driving the display panel, a second data voltage having a first polarity is outputted to the second data line during an N-th horizontal period. A first data voltage having a second polarity phase-inverted with respect to the first polarity and a first compensating voltage having the second polarity are respectively outputted to the first data line during first and second intervals of the N-th horizontal period. The first data voltage having the second polarity is outputted to the first data line during an (N+1)-th horizontal period. The second data voltage having the first polarity and a second compensating voltage having the first polarity are respectively outputted to the second data line during first and second intervals of the (N+1)-th horizontal period.09-15-2011
20120105407METHOD OF DRIVING A DISPLAY PANEL, AND DISPLAY DEVICE FOR PERFORMING THE METHOD - A method of driving a display panel includes sequentially applying a gate signal to a plurality of gate lines of the display panel during each frame period of a plurality of frame periods, applying data voltages to a plurality of data lines of the display panel, and applying a common voltage to the display panel, a polarity of the common voltage being inverted periodically and asynchronously with a frame period of the frame periods.05-03-2012
20120105406Driving Circuit for Liquid Crystal Pixel Array and Liquid Crystal Display Using the Same - A driving circuit and a liquid crystal display using the same. In the driving circuit, a first switch and a second switch are provided in a VCOM driver thereof. The first switch is designed to be turned on to a ground a VCOM terminal of a display capacitor, and the second switch is designed to be turned on to couple a constant voltage level DC VCOM to the VCOM terminal of the display capacitor. In addition, a timing controller of the driving circuit is designed for reducing power consumption, which controls the statuses of the first and second switches and determines when to allow a positive polarity voltage to be coupled to the display capacitor to charge the display capacitor for positive polarity display.05-03-2012
20090315872LIQUID CRYSTAL DISPLAY APPARATUS AND LIQUID CRYSTAL PANEL DRIVING MEHTOD - A liquid crystal display apparatus includes common voltage generator circuit (12-24-2009
20090289928Liquid crystal display device and driving method thereof - A liquid crystal display (LCD) device with a driving method includes an LCD panel, a data driving circuit, a common voltage generating circuit, and a gate driving circuit. The LCD panel includes multiple data lines and multiple scanning lines intersecting with the data lines, and a common electrode. The gate driving circuit provides multiple gate-scanning signals to scan the scanning lines. The common voltage generating circuit provides a common voltage to the common electrode. The data driving circuit provides a gray level voltage signal including multiple voltage levels to the data lines. The common voltage is serial square waves having at least two non-identical frame periods. The square waves in each non-identical frame period of the common voltage in one frame have a constant period.11-26-2009
20100238151Displaying device, its driving circuit and its driving method - The present invention relates to display devices. The present invention aims to provide a display device capable of eliminating display irregularities due to the difference in the charging rate between lines, while preventing increase in heat generation and power consumption by the device, and also to provide a circuit and method for driving the same. In a liquid crystal display device employing both a 2-line dot-inversion drive method and a charge-sharing method, a second charge-sharing period (TB), which is a charge-sharing period within a horizontal scanning period (2H period) in which the polarity of each data signal is the same as that in one horizontal scanning period previous thereto, is set to be longer than a first charge-sharing period (TA), which is a charge-sharing period within a horizontal scanning period (1H period) in which the polarity of each data signal is different from that in one horizontal scanning period previous thereto. Thus, a charge period within the 2H period can be shorter than that within the 1H period.09-23-2010
20100128011APPARATUS AND METHOD FOR DRIVING ELECTRO-OPTICAL DEVICE, THE ELECTRO-OPTICAL DEVICE, AND AN ELECTRONIC APPARATUS - An apparatus for driving an electro-optical device is disclosed. The apparatus includes a plurality of scanning lines, a plurality of data lines that intersect the plurality of scanning lines, and are divided so that the neighboring data lines form another group of data lines, a plurality of pixels provided to correspond to the intersection of the plurality of scanning lines and the plurality of data lines, a data line driving circuit that supplies a correction voltage being simultaneously supplied to the group of data lines and having a fixed polarity with respect to a predetermined potential, and a driving voltage being time-serially supplied to the group of data lines in response to an image signal and having a polarity that is inverted for each frame with respect to the predetermined potential, and a scanning line driving circuit that supplies a scanning signal through the plurality of scanning lines.05-27-2010
20110025663DISPLAY APPARATUS AND METHOD OF DRIVING THE SAME - A display apparatus includes: a display region including a plurality of pixels; a data driver for outputting data voltages corresponding to input data to the plurality of pixels; and a scan driver for outputting scan signals to the plurality of pixels, wherein the plurality of pixels includes a first pixel group and a second pixel group, and wherein the first pixel group and the second pixel group have offset voltages having different polarities in a first frame, and the polarities of the offset voltages are inverted for each frame after the first frame.02-03-2011
20110025664Method for Driving Liquid Crystal Display and Storage Medium Storing Program for Implementing the Method - The present invention discloses a method for driving thin film transistor liquid crystal display (TFT-LCD) and the storage medium for storing computer program representative of the method thereof. The method utilizes a timing controller to send polarity control signals to a plurality of source drivers in a TFT-LCD panel for changing the polarity distribution of the liquid crystal molecules in the panel. The method is characterized by dynamically changing the positions of polarity inversion for alleviating the problem of undercharging under high resolution and high frequency conditions; utilizing both polar and reverse polar driving signals for solving the problem of color shift in “checker board” checking signals; and providing a mechanism for mending the problem of undercharging of the first horizontal line.02-03-2011
20110242077DISPLAY DEVICE AND PORTABLE TERMINAL - The present invention relates to an active matrix display device including a plurality of pixels and a source driver (10-06-2011
20110050664APPARATUS AND METHOD FOR GENERATING CHOPPER-STABILIZED SIGNALS - A method for generating chopper-stabilized signals includes the following steps. First, a voltage polarity control signal is received. Next, the voltage polarity control signal is sampled to obtain a sampling signal, and a voltage transformation manner of the voltage polarity inversion of the voltage polarity control signal is judged according to the sampling signal. Then, a frame transformation signal template is obtained according to the voltage transformation manner of the voltage polarity inversion of the voltage polarity control signal and the sampling signal. Next, the frame transformation signal template is compared with the sampling signal and a frame transformation signal is generated. Then, a first chopper-stabilized signal is outputted according to the frame transformation signal and the voltage polarity control signal.03-03-2011
20100321359COMMON VOLTAGE GENERATING CIRCUIT OF AN LCD - A common voltage generating circuit of an LCD includes a first flip-flop, a capacitor, a resistor and a regulating circuit. The first flip-flop receives a data-loading signal from the LCD, for outputting a step signal. The step signal forms a waveform voltage through the capacitor and the resistor. The regulating circuit inverts the waveform voltage and adjusts the magnitude and the DC level of the waveform voltage, for generating a common voltage. Compare to the common voltage of the color filter base plate, the common voltage generated by the common voltage generating circuit have the same frequency and magnitude, but opposite direction. Therefore, by generating the common voltage of opposite direction, the present invention eliminates crosstalk and improves uneven brightness of the displayed image.12-23-2010
20100097361LIQUID CRYSTAL DRIVE DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME - A liquid crystal drive device (04-22-2010
20120169690DISPLAY DEVICE AND DRIVE METHOD FOR DISPLAY DEVICE - Provided are a display device capable of preventing image noise arising from changes in potential of a common electrode and auxiliary capacitor lines at the time of a switch between a normal mode and a memory mode and a method for driving such a display device. In a case where it is necessary to cause the common electrode and the auxiliary capacitor lines to change in potential along with a switch between the normal mode and the memory mode, the change in potential is made while electrically connecting a node of each memory circuit to a corresponding source line with the corresponding source line having its potential fixed and with the memory circuit having its a switch circuit in a conductive state.07-05-2012
20080252632GAMMA VOLTAGE GENERATING CIRCUIT AND DISPLAY DEVICE HAVING THE SAME - A gamma voltage generating circuit includes a resistor string part including a plurality of resistors electrically connected in series between a first power terminal and a second power terminal, the first power terminal receives a first power voltage and the second power terminal receives a second power voltage. The resistor string part outputs a plurality of gamma voltages. A first resistor part includes a first electronic device electrically connected in parallel with a first resistor. The first resistor part is electrically connected in series between the first power terminal and a first terminal of the resistor string part and a second resistor part includes a second electronic device electrically connected in parallel with a second resistor. The second resistor part is electrically connected in series between the second power terminal and a second terminal of the resistor string part.10-16-2008
20120200549Display Device And Drive Method For Display Device - Provided is a display device which can prevent screen noise caused such that a potential of a common electrode is reversed after a memory mode enters from a refresh period to an entire write-in period, and a method for driving the display device. The memory mode includes (i) an entire write-in period in which a potential of the common electrode (COM) is fixed and the display data is written into all the memory circuits (node (PIX)) in each row and (ii) a refresh period in which the display data which has been written during the entire write-in period is refreshed at least once while the common electrode (COM) is driven. In the memory mode, the potential of the common electrode during the entire write-in period being a potential which the common electrode having been driven had at the end of a refresh period preceding the entire write-in period.08-09-2012
20080204439Source driver, electro-optical device, projection-type display device, and electronic instrument - A source driver includes P grayscale signal lines, a corresponding grayscale voltage being supplied to each of the P grayscale signal lines, Q switch signal lines, a corresponding grayscale voltage being supplied to each of the Q switch signal lines, a first DAC that outputs a grayscale voltage among P grayscale voltages supplied to the P grayscale signal lines based on grayscale data, a second DAC that outputs a grayscale voltage among Q grayscale voltages supplied to the Q switch signal lines based on the grayscale data, and a source line driver section that drives a source line based on an output from the first DAC or the second DAC. The source line driver section generates a second drive signal of the source line based on the output from the second DAC, and then generates a first drive signal of the source line based on the output from the first DAC within one horizontal scan period.08-28-2008
20110134092LIQUID CRYSTAL DISPLAY - The present invention relates to a liquid crystal display, wherein the liquid crystal display includes a POL conversion control signal generating unit for generating a POL conversion control signal that is inverted at predetermined time intervals in a black data insertion mode and is fixed at a specific logic level in a normal drive mode, a timing controller for outputting a first polarity control signal that is inverted every a predetermined period, a POL conversion circuit that receives the POL conversion control signal and the first polarity control signal to output a second polarity control signal, a data driving circuit that supplies a data voltage to data lines and inverts a polarity of the data voltage in response to the second polarity control signal, and a gate driving circuit that sequentially supplies a gate pulse to gate lines.06-09-2011
20100182296POWER SUPPLY APPARATUS, LIQUID CRYSTAL DRIVING APPARATUS AND DISPLAY APPARATUS - A power supply apparatus of the present invention comprises: a constant voltage generation section (first DAC (07-22-2010
20110096050LIQUID CRYSTAL DISPLAY AND METHOD OF DRIVING THE SAME - A liquid crystal display including a liquid crystal panel having n gate lines and m data lines intersecting one another to form a frame to display an image; a gate driving unit supplying a scan signal to the n gate lines arranged in rows on the liquid crystal panel; a data driving unit supplying a data signal to the m data lines arranged in columns on the liquid crystal panel; and a common voltage driving unit applying a first common voltage to a plurality of odd common voltage lines arranged in rows on the liquid crystal panel, and applying a second common voltage to a plurality of even common voltage lines, wherein the odd common voltage lines and the even common voltage lines are alternately arranged in rows.04-28-2011
20130009928LIQUID CRYSTAL DISPLAY PANEL DRIVING METHOD, LIQUID CRYSTAL DISPLAY DEVICE, AND LCD DRIVER - A driving method of a liquid crystal display panel having a source line and a counter electrode, includes driving the counter electrode to a first potential, driving the, counter electrode to a second potential being different from the first potential, setting the counter electrode and the source line to a third potential by short-circuiting the counter electrode and the source line to an interconnection having a potential between the first potential and the second potential, and driving the source line to a potential corresponding to an image data. The setting of the counter electrode and the source line to the third potential occurs in a period of one frame.01-10-2013
20100194729DRIVING CIRCUIT OF PLASMA DISPLAY PANEL AND DRIVING METHOD THEREOF - Disclosed are a driving circuit of a plasma display panel (PDP) driving circuit and a driving method thereof, which can simplify the driving circuit and stably secure a sustain discharge waveform. The PDP includes a first electrode applying a ramp-up voltage, a ramp-down voltage, a scan pulse voltage and a sustain discharge voltage; a second electrode applying a ground voltage GND and a level voltage of a second electrode; and a third electrode applying a data voltage for selecting discharge cells in an address period. In the driving method using a driving waveform divided into a reset period, an address period and a sustain period, positive and negative sustain discharge voltages are alternately applied to the first electrode and the ground voltage GND is applied to the second electrode in the sustain period.08-05-2010
20100020055DISPLAY DEVICE DRIVING METHOD AND DISPLAY DEVICE - A display device includes a liquid crystal display panel having a first and second substrates with scanning electrodes and data electrodes and a liquid crystal layer; a scanning electrode driving circuit applying to the scanning electrodes scan pulse; a data electrode driving circuit applying to the data electrodes data pulses having combinations of different voltage levels according to write data; and a driving control circuit supplying to the scanning and data electrode driving circuits a pulse control signal controlling the phase of the scan pulses and data pulses. The scanning and data electrode driving circuits control the scan pulses and data pulses at voltage levels according to the pulse control signal, and the driving control circuit inverts or does not invert the phase of the pulse control signal, at each application interval of the scan pulses, according to the number of changed values and unchanged values of the write data.01-28-2010
20110304601IMAGE DISPLAY DEVICE, DRIVING METHOD OF IMAGE DISPLAY DEVICE AND TERMINAL DEVICE - An image display device includes a display element having a unit of display comprising sub pixels displaying images for first and second view points, respectively, and an optical unit that distributes lights emitted from respective sub pixels into different directions. When a region surrounded by a data line, a gate line and a storage capacitor electrode in the sub pixel is defined as an aperture, the sub pixels form a base unit that is an adjoining pixel pair including two sub pixels arranged via a data line therebetween. The two sub pixels have switching elements connected to the data line between the two sub pixels and controlled by different gate lines. When virtual lines each evenly dividing a width of the sub pixel in the first direction into K+1 pieces are presumed, K number of storage capacitor lines are each arranged across at least one virtual line in the aperture.12-15-2011
20120098808DISPLAY DEVICE AND DRIVING METHOD THEREOF - A display device and driving method are provided. A display device includes a display area that includes a plurality of pixel cells in respective pixel regions defined by a plurality of gate and data lines crossing each other. A data driver is operable to supply data signals to the pixel cells. The pixel cells are connected with the first data line and are divided into a plurality of pixel-cell groups. The data driver is operable to supply the data signal of first polarity to the pixel cells included in the odd-numbered pixel-cell groups, and to supply the data signal of second polarity to the pixel cells included in the even-numbered pixel-cell groups. The first polarity is opposite to the second polarity. A shift register that is operable to drive the gate lines to supply the scan pulses of different amplitudes to neighboring pixel cells included in the different pixel-cell groups.04-26-2012
20120044225Flat Display Device and Method of Driving the Same - A flat display device includes a flat panel including a plurality of gate lines; a first gate driving portion connected to odd gate lines among the plurality of gate lines; a second gate driving portion connected to even gate lines among the plurality of gate lines; a driving mode selection portion generating a driving mode signal corresponding to source output inputted thereto; and a timing control portion operating in a moving image mode or a still image mode in response to the driving mode signal, wherein the first and second gate driving portions alternately operate per a frame in the still image mode, or wherein the first and second gate driving portions alternately operate per a field in the moving image mode, in which the field is shorter than the frame.02-23-2012
20110157120DRIVE CIRCUIT AND DISPLAY DEVICE - A drive circuit for driving a display panel includes a first operation amplifier for operating using a first power source voltage and a second power source voltage; a second operation amplifier for operating using a third power source voltage and a fourth power source voltage; a control unit for supplying a first control voltage and a second control voltage; and a switch circuit for switching the first operation amplifier and the second operation amplifier. The switch circuit includes an n-channel type field effect transistor. The control unit applies the first control voltage to the n-channel type field effect transistor, so that the n-channel type field effect transistor transits from a non-conductive state to a conductive state.06-30-2011
20120001881DRIVING METHOD OF LIQUID CRYSTAL DISPLAY DEVICE - An object is to provide a driving method of a liquid crystal display device with a low power consumption and a high image quality. A pixel includes a liquid crystal element and a transistor which controls supply of an image signal to the liquid crystal element. The transistor includes, in a channel formation region, a semiconductor which has a wider band gap than a silicon semiconductor and has a lower intrinsic carrier density than silicon, and has an extremely low off-state current. In inversion driving of pixels, image signals having opposite polarities are input to a pair of signal lines between which a pixel electrode is disposed. By employing such a structure, the quality of the displayed image can be increased even in the absence of a capacitor in the pixel.01-05-2012
20120013586Method and device for driving bistable liquid crystal display panel - In a method of driving a dot matrix display panel using bistable nematic liquid crystal, a “blur” due to a parasitic signal is prevented from being caused. In a method of driving a dot matrix display panel using bistable nematic liquid crystal which may select white/black only by positive polarity driving or negative polarity driving, a direct current component due to a parasitic signal (01-19-2012
20120154358SOURCE-DRIVING CIRCUIT, DISPLAY APPARATUS AND OPERATION METHOD THEREOF - A source-driving circuit comprises a plurality of first and second data-outputting units, a first and a second charge-sharing units and a charge-sharing switch circuit. The first and second data-outputting units have corresponding first and second output terminals respectively for outputting data signals with a first polarity and a second polarity. The first and second charge-sharing units comprise a plurality of first and second switches respectively. Each first switch is electrically connected between each two first output terminals and each two second output terminals. Each second switch is electrically connected between one of the first outputting terminals and a corresponding one of the second outputting terminals. A charge-sharing switch circuit is electrically connected to the first and second charge-sharing units for outputting a switch signal to the first and second charge-sharing units according to a polarity signal, so as to determine the on/off statuses of the first and second switches.06-21-2012
20120154359STEREOSCOPIC DISPLAY DEVICE - The stereoscopic display device has a display panel, a barrier liquid crystal panel disposed on the display panel, and a driving circuit for driving the display panel and the barrier liquid crystal panel, in which the frame frequency of the display panel and the alternating frequency of the barrier liquid crystal panel are different, the barrier liquid crystal panel is driven by a driving voltage input from the driving circuit, the driving circuit has an inverter circuit for outputting the driving voltage, independently controls a p-type transistor and an n-type transistor in the inverter circuit, and has time periods in which both the p-type transistor and the n-type transistor are turned off when the driving voltage is switched from a high level to a low level or a low level to a high level.06-21-2012
20120062535DRIVING METHOD OF ELECTRO-OPTICAL DEVICE, ELECTRO-OPTICAL DEVICE, AND ELECTRONIC APPARATUS - In an electro-optical device, a liquid crystal element can be driven more appropriately.03-15-2012
20110090197PLASMA DISPLAY AND DRIVING APPARATUS THEREOF - A plasma display includes a panel capacitor formed by a first electrode and a second electrode for sustain discharging in a sustain period. A driving apparatus of such plasma display includes a switching circuit unit, and a transformer including a primary coil and a secondary coil. The switching circuit unit generates a square wave voltage using an input voltage of an input source so that a voltage of two terminals of the panel capacitor alternately has a positive voltage and a negative voltage. The primary coil is connected between two output terminals of the switching circuit unit, and the secondary coil is connected between two terminals of the panel capacitor.04-21-2011
20110090196LIQUID CRYSTAL DISPLAY HAVING PIXEL DATA SELF-RETAINING FUNCTIONALITY AND OPERATION METHOD THEREOF - A liquid crystal display having pixel data self-retaining functionality includes a gate line for delivering a gate signal, a data line for delivering a data signal, a control unit for providing a first control signal and a second control signal, a data switch, a voltage-control inverter, a liquid crystal capacitor, and a pass transistor. The data switch is utilized for inputting the data signal to become a first data signal according to the gate signal. The voltage-control inverter is utilized for inverting the first data signal to generate a second data signal furnished to the liquid crystal capacitor according to the enable operation of the first control signal. The pass transistor is used for passing the second data signal to become the first data signal or for passing the first data signal to become the second data signal according to the second control signal.04-21-2011
20110102398Emission control line drivers, organic light emitting display devices using the same and methods of controlling a width of an emission control signal - An emission control line driver includes even-numbered stages that are connected to even-numbered emission control lines, respectively, and are driven by a first clock signal, and odd-numbered stages that are connected to odd-numbered emission control lines, respectively, and are driven by a second clock signal, wherein each of the stages includes an input unit adapted to receive a control signal and an inverted control signal output from a previous one of the even and odd numbered stages or from an external source, the input unit being adapted to control voltages of a first node and a second node, a first output unit adapted to generate an emission control signal based on the voltages of the first node and the second node, and a second output unit adapted to generate an inverted emission control signal based on the voltages of the first node and the second node.05-05-2011
20100289786LIQUID CRYSTAL DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A liquid crystal display device includes a display portion having a first substrate, a second substrate opposing to the first substrate, a liquid crystal layer held between the first and second substrates, and a plurality of pixels arranged in a delta shape. A plurality of pixel electrodes are respectively connected to signal lines extending in a first direction via a switch. The switch is controlled by scanning lines extending in a second direction which orthogonally crosses the first direction. The signal lines extend in a space between the pixel electrodes in a meandering shape in the second direction, and two kinds of color pixels are connected with a common signal line in turn via the pixel switch.11-18-2010
20120127144LIQUID CRYSTAL DISPLAY AND SOURCE DRIVING APPARATUS AND DRIVING METHOD OF PANEL THEREOF - A liquid crystal display (LCD) and a source driving apparatus and a driving method of a panel thereof are provided. In the present invention, two data strings with matched driving polarities are selected to perform charge-sharing, before pixels are driven by output buffers of the source driving apparatus. Accordingly, the power consumed by the output buffers of the source driving apparatus would be lower during the process of driving pixels, and thus achieving the purpose of power saving.05-24-2012
20120162172METHOD OF DRIVING DISPLAY PANEL AND DISPLAY APPARATUS PERFORMING THE METHOD - A method of driving a display panel determines whether an image mode of an image signal is a 2D flat image mode or a 3D stereoscopic image mode. A first reverse signal and a second reverse signal different from the first reverse signal are generated according to the image mode. The image signal is converted to a first polarity data voltage or a second polarity data voltage with respect to a reference voltage based on the first reverse signal or the second reverse signal, and the first polarity data voltage or the second polarity data voltage is outputted to a display panel. During the 3D stereoscopic image mode, polarities of data voltages are reversed at a period of a plurality of frames, so that display quality of the 3D stereoscopic image may be enhanced.06-28-2012
20120162171Driving Method for Liquid Crystal Display Device and Related Device - A driving method for a liquid crystal display (LCD) device is disclosed. The LCD device includes a plurality of data lines and a plurality of thin film transistors (TFTs). The driving method includes restoring data of a plurality of sub-pixels of a first frame, wherein the sub-pixels corresponds to the plurality of TFTs; arranging a turn-on order of the plurality of TFTs on each of a plurality of data lines according to the data of the plurality of sub-pixels; and turning on the plurality of TFTs on each of the plurality of data lines according to the turn-on order.06-28-2012
20100207918LIQUID CRYSTAL DISPLAY DEVICE AND DRIVING METHOD THEREOF - An LCD device and a driving method thereof are disclosed.08-19-2010
20100207919DISPLAY DEVICE, AND ITS DRIVE CIRCUIT AND DRIVE METHOD - An objective of the present invention is to prevent the occurrence of horizontal streaks in a screen of a display device that implements pseudo impulse display by performing black insertion. In a display device that implements pseudo impulse display by performing black insertion, a gate driver applies to each gate bus line a scanning signal including a pixel data write pulse (Pw) for writing pixel data to a pixel formation portion and black voltage application pulses (Pb) for writing a black voltage, based on a gate output control signal (GOE). Here, when the polarity of a polarity control signal (REV) is the same for two consecutive horizontal scanning periods, the gate output control signal (GOE) is maintained at a high level. When the gate output control signal (GOE) is at a high level, the gate driver inhibits a black voltage application pulse (Pb) from being generated in all the scanning signals.08-19-2010
20120212469DISPLAY DRIVING CIRCUIT AND METHOD - A display driving circuit adapted to drive multiple display channels of a display panel is provided. The display channels include a first set channel, a second set channel, a third set channel, and a fourth set channel respectively having an alternate change between a first voltage polarity and a second voltage polarity. Adjacent two set channels are operated by the first voltage polarity and second voltage polarity. A switching unit has four switches respectively connected to adjacent two of the four set channels. A switch control circuit conducts the four switches in a sequence. In a first stage, anyone of the switches is conducted for a period. In a second stage, other two switches connected to two terminals of the conducted switch are conducted for a period. In a third stage, another switch serially connected between the two conducted switches in the second stage is conducted for a period.08-23-2012
20120299893IMAGE PROCESSING APPARATUS, METHOD OF CONTROLLING THE SAME, COMPUTER PROGRAM, AND STORAGE MEDIUM - One frame period of image data is divided into a plurality of subframes and driven. A first subframe included in one frame and a second subframe following the first subframe are output at opposite polarities. The image data is output while switching a phase mode between a first mode of driving the first subframe at positive polarity and the second subframe at negative polarity and a second mode of driving the first subframe at negative polarity and the second subframe at positive polarity.11-29-2012
20120299892CHANGING DISPLAY ARTIFACTS ACROSS FRAMES - Displaying an image on a display screen is provided by periodically changing the scanning order in which rows of sub-pixels of the display screen are scanned. One scanning order can be selected to scan the rows in the update of a first image frame of the display, and then a different scanning order can be selected to scan the rows in the update of a second image frame. Particular scanning orders can be selected in order to reduce or eliminate the appearance of visual artifacts by changing the location of the visual artifacts across multiple image frames. For example, different scanning orders that result in visual artifacts at different positions on the display screen can be used, and the selection of scanning order can periodically change among the different scanning orders such that the position of the visual artifacts changes periodically during the updating of multiple image frames.11-29-2012
20110181571DISPLAY DRIVING DEVICE AND DISPLAY APPARATUS COMPRISING THE SAME - A display driving device includes a gradation voltage generating section for generating a plurality of gradation voltages corresponding to the number of gradation levels in display data and reversing polarities of the gradation voltages at a time based on a horizontal synchronizing signal corresponding to the display data. A plurality of applying circuit sections are provided for every predetermined number of a plurality of signal lines, for generating a display signal voltage corresponding to the display data on the basis of the plurality of gradation voltages and for sequentially applying the display signal voltage to each of the predetermined number of signal lines. The time when the gradation voltage generating section reverses the polarities of the gradation voltages is set to occur before a timing for the next horizontal synchronizing signal and after completion of application of the display signal voltage to the signal lines.07-28-2011
20110181570DISPLAY APPARATUS, DISPLAY PANEL DRIVER AND DISPLAY PANEL DRIVING METHOD - A display apparatus is provided with: a display panel including a data electrode; a display panel driver driving the data electrode by supplying a data signal to the data electrode; and a controller supplying a polarity switching signal specifying a polarity of the data signal to the display panel driver. Control data are incorporated into the polarity switching signal, and the display panel driver operates in responsive to the control data.07-28-2011
20120133630Liquid crystal display apparatus and method of driving the same - Present embodiments may include a liquid crystal display apparatus, using a line reversal method, wherein at least one pulse is inserted between charging periods, and a method of driving the liquid crystal display apparatus. According to present embodiments, in a liquid crystal display apparatus employing a polarity reversal method, audible noise may be removed without increasing a frame frequency and reducing a charging time of a storage capacitor.05-31-2012
20120133629DRIVING APPARATUS AND DISPLAY PANEL - A driving apparatus and a display panel are provided. The display panel includes M*2N pixels, N data driving units, 2M scan lines and 2N data lines. The M*2N pixels are arranged as an M*2N matrix. M and N are positive integers. Each scan line is electrically coupled to N pixels in the same row. Each data driving unit is electrically coupled to two data lines that are not adjacent to each other.05-31-2012
20120169689SOURCE DRIVER UTILIZING MULTIPLEXING DEVICE AND SWITCHING DEVICE - In accordance with revealed embodiments of the present invention, a source driver is provided, which is capable of providing a variety of polarity inversion patterns of source driving signals. Additionally, due to properly utilizing a multiplexing device and a switching device, hardware architecture of the inventive source driver is no more complicated than that of the conventional source driver. As a result, the present invention provides a source driver having the greater performance than the conventional source driver without increasing hardware cost and circuitry complexity.07-05-2012
20120081346SHIFT REGISTER, DISPLAY-DRIVING CIRCUIT, DISPLAYING PANEL, AND DISPLAYING DEVICE - Provided is a shift register of a display-driving circuit which carries out simultaneous selection of a plurality of signal lines by using a simultaneous selection signal. A stage of the shift register includes (i) a set-reset type flip-flop and (ii) a signal generating circuit which generates an output signal of the stage by selectively outputting a signal in response to an output of the flip-flop. The output signal of the stage (i) becomes active due to an activation of the simultaneous selection signal and then (ii) remains active while the simultaneous selection is being performed, and the output from the flip-flop is inactive during a period in which a setting signal and a resetting signal are both being active. This makes it possible to quickly carry out the simultaneous selection of all the signal lines and the initialization of the shift register.04-05-2012
20120081345Pixel Circuit And Display Device - A liquid crystal display device is provided which is capable of sufficiently decreasing power consumption in permanent display of still images while keeping high quality display in transparent mode, in high resolution display panels. In each pixel circuit, a pixel electrode is connected to a source line via a third transistor. When a refreshing circuit performs a refreshing operation, a boosting signal line is supplied with a voltage pulse. If the pixel electrode is at a high voltage level at this time point, a voltage at a node is boosted and a first transistor turns ON to supply a reference voltage to the pixel electrode as a refreshing voltage. If the pixel electrode is at a low voltage level, there is no boost, and the first transistor stays in OFF state, so a node assumes a voltage which is given by an off-resistance ratio of the first and the third transistors, and this voltage is supplied to the pixel electrode.04-05-2012
20100321360Differential signal receiving circuit and display apparatus - A differential signal receiving circuit includes: a first differential circuit of a plurality of depletion type transistors of a first conductive type and having a first output node and a second output node; and a second differential circuit of a plurality of enhancement type transistors of a second conductive type opposite to the first conductive type, and having output nodes respectively connected with the first and second output nodes. An inverter circuit is connected between the first output node and the second output node.12-23-2010
20120320018LIQUID-CRYSTAL PANEL DRIVE METHOD AND LIQUID-CRYSTAL DISPLAY DEVICE - A liquid crystal display device (12-20-2012
20100231564LIQUID CRYSTAL DISPLAY AND METHOD OF DRIVING THE SAME - A liquid crystal display and a method of driving the same are provided. The liquid crystal display includes a liquid crystal display panel including data lines, gate lines crossing the data lines, and liquid crystal cells and having a quad type pixel structure in which red, green, blue, and white subpixels constitute one pixel, a logic circuit sequentially outputting polarity control signals, a data drive circuit that inverts a polarity of a data voltage in response to the polarity control signals to supply the data voltage with the inverted polarity to the data lines, and a gate drive circuit sequentially supplying gate pulses to the gate lines. A logic level of each of the polarity control signals is inverted every three horizontal periods, and phases of the polarity control signals are different from one another.09-16-2010
20120092317Display Driving Circuit, Display Device And Display Driving Method - A display driving circuit which carries out CC driving is configured such that a polarity of a data signal to be supplied to a source line is reversed every two horizontal scanning periods and a signal electric potential written from the source line to a pixel electrode changes in a different direction every two adjacent rows. In at least one example embodiment, this allows, in a display device which carries out CC driving, enhancement of a display quality by removing lateral stripes that are produced in a display video while n-line reversal driving is being carried out.04-19-2012
20120092316LIQUID CRYSTAL DISPLAY DEVICE AND DRIVING DISPLAY METHOD THEREOF - The present invention provides a liquid crystal display device and a driving display method thereof which firstly provides a first data signal; generates a driving control signal according to the first data signal that the driving control signal divides a first pixel to a N-th pixel of a pixel column into a first pixel group and a second pixel group according to the positive or negative polarity of each of pixel-voltages that are to be correspondingly received by the first pixel to the N-th pixel; orderly provides a scanning signal to the pixels of the first pixel group according to the driving control signal to activate the pixels of the first group one by one to input corresponding pixel-voltages thereto; and then orderly provides another scanning signal to the pixels of the second pixel group to activate the pixels of the second group one by one to input corresponding pixel-voltages thereto, so as to complete a frame of image display. The present invention not only uses polarity inversion to improve display quality, but also economizes power consumption.04-19-2012
20120287099DISPLAY DEVICE - A display device includes a plurality of pulse output circuits each of which outputs signals to one of the two kinds of scan lines and a plurality of inverted pulse output circuits each of which outputs, to the other of the two kinds of scan lines, inverted or substantially inverted signals of the signals output from the pulse output circuits. Each of the plurality of inverted pulse output circuits operates with at least two kinds of signals used for the operation of the plurality of pulse output circuits. Thus, through current generated in the inverted pulse output circuits can be reduced.11-15-2012
20120287100Liquid Crystal Display Device and Method for Driving the Same - Disclosed is a liquid crystal display device increasing transmittance to improve brightness while employing ferroelectric liquid crystals in a half-V mode. The liquid crystal display device includes a liquid crystal panel including ferroelectric liquid crystals of a half-V mode, and a driving circuit driving a liquid crystal panel so that a first frame period, which the positive data voltages are supplied to the liquid crystal panel, becomes longer than a second frame period, which the negative data voltages are supplied to the liquid crystal panel.11-15-2012
20100188380DISPLAY DEVICE INCLUDING A DISPLAY ELEMENT OF DOT MATRIX TYPE AND A DRIVE METHOD THEREOF - A display device includes a display element of a dot matrix-type having a display material with memory properties, a drive circuit that drives a pixel of the display element and a control circuit that controls the drive circuit, the control circuit includes an initialization step for applying a voltage pulse to initialize a pixel to be rewritten to bring about an initial gradation state and a gradation step for applying a voltage pulse to change the gradation state of a pixel, and the gradation step includes a plurality of sub-steps having a plurality of execution times and in the plurality of sub-steps, an alternating-current voltage pulse is formed in a pixel to be rewritten and the period of the alternating-current voltage pulse is varied in accordance to a gradation to be written within the range of the sub-step.07-29-2010
20120139886Display device and driving method thereof - A display device may have a plurality of pixels of a first group connected to a plurality of first gate lines and first common voltage lines and a plurality of pixels of a second group connected to a plurality of second gate lines and second common voltage lines. The display device drives the first common voltage lines and the second common voltage lines in synchronization with a first clock signal; and drives the plurality of first gate lines and the plurality of second gate lines in synchronization with a second clock signal. I-th first and second common voltage lines (i is a positive integer) are driven to one of a first common voltage and a common reference voltage, and (i+1)-th first and second common voltage lines are driven to one of a second common voltage and the common reference voltage.06-07-2012
20130169609Shift Register and Gate Driving Circuit Using the Same - Disclosed are a shift register, and a gate driving circuit including a plurality of shift registers connected in sequence to respectively supply scan signals to a plurality of gate lines of a display device. Each shift register includes: an input unit which outputs a directional input signal having a gate high or low voltage based on an output signal from a previous or subsequent shift register to a first node; an inverter unit which is connected to the first node, generates an inverting signal to a signal at the first node, and outputs the inverting signal to a second node; and an output unit which includes a pull-up unit connected to the first node and activating an output clock signal based on the signal at the first node, and a pull-down unit activating and outputting a pull-down output signal based on a signal at the second node.07-04-2013
20130113770DISPLAY DEVICE AND DRIVING METHOD THEREOF - A display device includes: a display area including a plurality of pixels, where each of the pixels includes m subpixels; and a plurality of data lines connected to the pixels, where 2n pixels of the pixels define an inversion reference group, where 2mn subpixels in the inversion reference group are applied with data voltages of a same polarity, and where each of n and m is a natural number.05-09-2013
20130113769DISPLAY CAPABLE OF IMPROVING FRAME QUALITY AND METHOD THEREOF - A display capable of improving frame quality includes a display panel, a timing controller, and a source driver. The timing controller is used for generating a scan start signal, and generating at least one control signal in a blanking time of the display panel according to polarity of a last datum before the blanking time and polarity of a first datum after the blanking time. The source driver is used for generating at least one datum synchronized with the at least one control signal according to the polarity of the last datum before the blanking time, a voltage of the first datum after the blanking time and the at least one control signal. The source driver does not change a last datum of the at least one datum after the at least one control signal in the blanking time.05-09-2013
20110216052SIGNAL LINE DRIVING METHOD FOR DISPLAY APPARATUS, DISPLAY APPARATUS AND SIGNAL LINE DRIVING METHOD - There is provided a driver circuit includes a polarity control unit that decides a polarity preceding by one line from an input polarity signal to generate a data polarity control signal, a data control unit that performs data interchange, at the time of latching the input data, based on the data polarity control signal, and a selector unit that controls the data interchange in an output circuit based on the data polarity control signal.09-08-2011
20080198152Display apparatus - For the purpose of providing a display apparatus capable of improving display quality by expanding the light-emission area of pixels by improving the layout of pixels and common power-feed lines formed on a substrate, pixels (08-21-2008
20110221726Driving Method And System For Electrofluidic Chromatophore Pixel Display - An electronic display is disclosed comprising a plurality of electrofluidic chromatophore (EFC) pixel cells. The display comprises a controller executing the steps of: storing the present cell display properties of the pixel cells displaying the present image content, comparing the present cell display properties with next cell display properties of the pixel cells, determining still-image pixels displaying still-image content wherein the present cell display properties of the pixels are substantially identical to the next cell display properties of the pixels, and providing a still-image drive scheme. The still-image drive scheme involves addressing a voltage to another one pixel cell terminal of the still-image pixels, the still image voltage being derived from the stable supply voltage that stabilizes the cell display properties of the still-image pixels so as to display still-image content in an energy efficient manner.09-15-2011
20100309184SEMICONDUCTOR DEVICE AND DISPLAY DEVICE - A circuit which is constituted by a plurality of n-channel transistors includes, in at least one embodiment, a transistor (T12-09-2010
20120274619ELECTRONIC PAPER DISPLAY DEVICE AND DRIVING METHOD THEREOF - Disclosed herein are an electronic paper display device and a driving method thereof. The electronic paper display device includes: rotating balls each having at least two display areas colored in different colors and including a portion charged with a positive charge and a portion charged with a negative charge; a driving controller generating a driving voltage for rotating the rotating balls; and an upper electrode and a lower electrode provided above and below the rotating balls, respectively, and receiving a driving voltage from the driving controller, wherein the driving controller may apply a first driving voltage for rotating the rotating balls between the upper electrode and the lower electrode for time duration T11-01-2012
20110242076DEVICE FOR DRIVING DATA AND METHOD THEREOF USED FOR LIQUID CRYSTAL DISPLAY - A device for driving data used for a liquid crystal display includes: a first latch circuit and a second latch circuit for forming first latched data and second latched data; a first regulating circuit and a second regulating circuit for regulating the first latched data or the second latched data; a first switch, a second switch, a third switch and a fourth switch respectively coupled between the first latch circuit or the second circuit and the first regulating circuit or the second regulating circuit. The first and the second latched data become a first pair of differential signals when the first switch and the fourth switch are turned on. The first and the second latched data become a second pair of differential signals which are opposite to the first pair of differential signals when the second switch and the third switch are turned on.10-06-2011
20110234561DISPLAY CONTROLLER AND METHOD FOR DRIVING LIQUID CRYSTAL DISPLAY PANEL - A display controller and a method for driving a liquid crystal display (LCD) panel are disclosed. The display controller is electrically connected to the LCD panel and comprises a data processor and a control signal generator. The method comprises the following steps: determining whether an image data signal is a first image data signal or a second image data signal; providing a first polarity signal to the panel when the image data signal is the first image data signal; and providing a second polarity signal to the panel when the image data signal is the second image data signal.09-29-2011
20100315398METHOD AND SYSTEM FOR WRITING DATA TO ELECTROMECHANICAL DISPLAY ELEMENTS - Methods and devices for applying bias potentials of opposite polarities to columns of electromechanical display elements are described herein. The bias potentials may be applied such that a column and an adjacent column receive bias potentials of opposite polarity. The bias potentials may be applied such that a polarity of bias voltages received by columns of a first set of the display elements is opposite a polarity of bias voltages received by columns of a second set of the display elements.12-16-2010
20120075277LIQUID CRYSTAL DISPLAY APPARATUS AND METHOD OF DRIVING THE SAME - A liquid crystal display apparatus includes an active-matrix type display panel and a signal drive circuit. The active-matrix type display panel includes a pair of substrates, a liquid crystal layer interposed between the substrates, pixel electrodes arranged on one of the substrates in rows and columns, switching elements connected to the pixel electrodes, scan lines connected to the switching elements, and signal lines connected to the switching elements. Each signal line extends between two columns of the pixel electrodes, and any two pixel electrodes adjacent in the row direction use one signal line in common. One of two pixel electrodes is connected to an odd-numbered scan line, and the other of two pixel electrodes is connected to an even-numbered scan line. The signal drive circuit supplies display signals to the pixel electrodes through the signal lines, and to invert the display signal in polarity at every two other scan lines.03-29-2012
20120086689Display Driving Circuit, Display Device And Display Driving Method - An embodiment of the present invention switches, in a display driving circuit of a liquid crystal display device which carries out CC driving, between a two-line reversal driving mode in which a polarity of a data signal supplied to a source line is reversed every two horizontal scanning periods and a one-line reversal driving mode in which a polarity of a data signal supplied to a source line is reversed every one horizontal scanning period. In at least one example embodiment, a polarity signal reverses its polarity every two horizontal scanning periods in the two-line reversal driving mode, and reverses its polarity every one horizontal scanning period in the one-line reversal driving mode.04-12-2012
20120086688Display Apparatus And Display Apparatus Driving Method - During the first frame, a first common electric potential is used, all picture elements of an identical line have an identical write polarity, there is another line of picture elements having a write polarity different from the identical write polarity, a data signal having a first electric potential lower than the first common electric potential is supplied to a line for a negative write polarity, a picture element electrode electric potential is changed to a second electric potential greater than a second common electric potential and lower than the first common electric potential by changing a storage capacitor electric potential from Low to High after a selection period ends, a data signal having a third electric potential greater than the first common electric potential is supplied to a line for a positive write polarity, and the storage capacitor electric potential is still kept Low after the selection period ends.04-12-2012
20120086687ACTIVE MATRIX SUBSTRATE, LIQUID CRYSTAL PANEL, LIQUID CRYSTAL DISPLAY DEVICE, LIQUID CRYSTAL DISPLAY UNIT, AND TELEVISION RECEIVER - Pixel electrodes (04-12-2012

Patent applications in class Field period polarity reversal