Abstract: An exemplary liquid crystal display (20) includes a plurality of pixel units (240) each including a pixel electrode (26) and a common electrode (22), a data driving circuit (33) providing a plurality of data voltages to each pixel electrode, a common voltage generating circuit (34) providing a common voltage to each common electrode, and a gamma voltage generating circuit (35) providing gamma voltages to the data driving circuit. The plurality of pixel units are arranged in a matrix. The voltage difference between the data voltage and the common voltage in each pixel unit is a sum of a main voltage and an auxiliary voltage with periodical change. An absolute value of the main voltage is constant. An absolute value of the auxiliary voltage is less than the absolute value of the main voltage. A sum of the auxiliary voltage is zero in a minimum period.

Abstract: An organic light emitting diode display and an aging method thereof are presented. The method provides the organic light emitting diode display with improved reliability as a progressive dark defect is removed, and the lifetime and the white balance of the organic light emitting diode display is secured by executing an aging treatment of high luminance using a pixel circuit including an aging circuit for supplying the organic light emitting diode with an aging pulse.

Abstract: Processing of images for displaying on a display for displaying images on a liquid crystal display.

Abstract: The present invention provides a method for driving a backlight module of a liquid crystal display. The backlight module includes three light sources, a first light source, a second light source, and a third light source, that illuminate different color light respectively. The method includes sequentially turning on the three light sources, wherein the first light source and the second light source are turned on twice and the third light source is turned on once.

Abstract: An output enable signal transformation device for a gate driver in an LCD device includes a reception terminal coupled to a timing generator of the LCD device for receiving an enable synchronization signal, an enable clock signal and a plurality of enable control signals generated by the timing generator, a shift register module coupled to the reception terminal for shifting the enable synchronization signal according to the enable clock signal, a multiplexer module coupled to the shift register module and the timing generator for generating a plurality of output enable signals according to the enable synchronization signal and the plurality of enable control signals, and an output terminal coupled to the multiplexer module and a logic circuit of the gate driver for outputting the plurality of output enable signals to the logic circuit.

Abstract: A method for driving a liquid crystal device to record an image on the liquid crystal device is provided. The liquid crystal device has: a pair of electrodes; and a liquid crystal layer of cholestric liquid crystal sandwiched between the pair of electrodes. The method includes: applying a voltage V1 higher than a threshold value of a phase change to the homeotropic phase to make the liquid crystal layer to be in a homeotoropic phase; applying selectively two voltages V2H and V2L higher than the voltage V1 to each portion of the liquid crystal layer; and applying a voltage V3 under a condition of such a magnification and application time that a portion to which the voltage V2H has been applied changes to a planar phase and a portion to which the voltage V2L has been applied changes to a focal conic phase.

Abstract: Improving image sticking of a liquid crystal display (LCD) including a plurality of pixels, each of which includes a first subpixel and a second subpixel, includes driving the first subpixels of the pixels with a first optimized common voltage, driving the second subpixels of the pixels with a second optimized common voltage, and driving the LCD with a panel voltage. The panel voltage is between the first and the second optimized common voltages.

Abstract: A display panel is scanned every two lines during a period of binary writing area in the first half of one frame period in partial display (or in small gradation display) and a steady-state current of an output amplifier for buffering gradation signals supplied to the display panel in a non-scanning period in the second half of one frame period is reduced.

Abstract: A pixel includes a light emitting diode, and a switching circuit that is coupled to a data line and a compensation power source line, and includes a transistor including a control terminal, a first main terminal coupled to a power source line, and a second main terminal coupled to the light emitting diode. The switching circuit generates a control signal based on at least a voltage of a data signal transmitted through the data.

Abstract: On a panel, a plurality of PVDD lines, each of which corresponds to a horizontal line of pixels and supplies power to the pixels of the horizontal line, are provided. A voltage drop correction unit that obtains a voltage drop before reaching the pixel, based on resistance in the plurality of power supply lines and currents flowing therein, and corrects display data so as to cancel the obtained voltage drop of the pixel. A display unevenness correction unit that corrects uneven brightness caused by a variation in a TFT characteristic of the pixel by performing a calculation using display data of the pixel and obtained correction data of the pixel.

Abstract: A horizontal scanning period correction value setting circuit compares a video signal representing a display image of pixel formation portions of polarity-inverted lines and a video signal representing a display image of pixel formation portions of the next row, and generates a signal width correction value for correcting the length of the horizontal scanning period. For this, the signal width correction value is set such that the charge ratios of the pixel formation portions are constant, regardless of a difference between a target voltage of the driving video signals when the polarity is inverted and a target voltage of the driving video signals when the polarity is sustained. Then, a source output control signal and a gate output control signal are generated based on the signal width correction value, and the scanning signals and the driving video signals are generated based on the source output control signal and the gate output control signal.

Abstract: A liquid crystal display includes a first substrate. A plurality of scan lines and a plurality of data lines are disposed on the first substrate to define a plurality of pixel regions. A plurality of common line groups is disposed on the first substrate, and each of the common line groups includes a plurality of common lines parallel to the scan lines. And, at least, a voltage regulator is electrically connected to one of the common line groups, wherein the voltage regulator can stabilize the pixel voltage to decrease the flicker of the liquid crystal display.

Abstract: An electronic display device having viewing-angle adjusting and stereoscopic-image displaying functions. The display device includes a display unit for displaying an image and a liquid crystal barrier disposed in front of the display unit. The barrier includes: first and second substrates facing each other; a liquid crystal layer disposed between the first and second substrates; and a first controller for controlling light transmission, the first controller being disposed at the first substrate facing the liquid crystal layer and including first electrodes spaced apart from each other by an interval along a first direction of the liquid crystal barrier, second electrodes arranged between the first electrodes along the first direction, and a third electrode insulated from the first and second electrodes; and a second controller for adjusting a viewing angle, the second controller being disposed at the second substrate facing the liquid crystal layer and including one or more electrodes.

Abstract: The invention relates to a liquid crystal display element displaying an image using a liquid crystal layer having memory characteristics and a method of driving the element. A liquid crystal display element capable of suppressing the generation of an afterimage attributable to image sticking is provided along with a method of driving the same.

Abstract: A selection section (105) selects a step voltage, among a plurality of step voltages (SV1, SV2, SV3, . . . ) each having a voltage value changing stepwise, corresponding to the digital value of digital data (D-DATA). For each of the plurality of step voltages (SV1, SV2, SV3, . . . ), different digital values are allocated to different steps of the step voltage. An amplifier section (106) amplifies the step voltage selected by the selection section (105). An output section (107) outputs the step voltage amplified by the amplifier section (106) as an output voltage (Vout) for a time period corresponding to the digital value of the digital data (D-DATA).

Abstract: Disclosed is a data receiver circuit including a differential pair having first and second transistors of a first conductivity type, which receives at first and second inputs thereof a binary signal by which data transfer is performed in a differential form, a load circuit composed of first and second diode-connected transistors of a second conductivity type, connected to the first and second inputs of the differential pair, respectively, an output circuit that charges and discharges an output terminal using currents corresponding to currents that flow through the first and second diode-connected transistors of the second conductivity type, respectively, and a current supply circuit with an output current thereof input to at least one of the first and second diode-connected transistors of the second conductivity type.

Abstract: A multi-reference voltage generator includes an interface controller, a first bank of N m-bit registers and a second bank of N m-bit registers. A first multiplexer has inputs connected to outputs of the first and second bank of registers. An m-bit digital-to-analog (DAC) has an m-bit parallel input connected to an output of the first multiplexer. An analog demultiplexer has an input connected to an analog output of the m-bit DAC. Each voltage storage device in a first group of N voltage storage devices is connected to a corresponding output of the analog demultiplexer. Similarly, each voltage storage device in a second group of N voltage storage devices is connected to a corresponding output of the analog demultiplexer. N further multiplexers each have a first input connected to an output of a corresponding one of the voltage storage devices in the first group and a second input connected to an output of a corresponding one of the voltage storage devices in the second group.

Abstract: The present invention provides a liquid crystal display including a plurality of pixel units defined by scanning lines and data lines. Each pixel unit includes two sub-pixels. Each sub-pixel includes a storage capacitor. The two storage capacitors in a pixel unit are connected to different voltage sources to modify the electric potential of the pixel electrodes.

Abstract: An the driving method and apparatus including a liquid crystal display panel provided with a plurality of data lines; a brightness detector to detect a black brightness component and a white brightness component of data supplied to the plurality of data lines; a controller to compare magnitudes of a black brightness amount and a white brightness amount in the white and black brightness components detected by the brightness detector to generate a compared result and to control an application of a common voltage on a basis of a black brightness data level or a white brightness data level of data supplied to the plurality of data lines in accordance with the compared result; and a common voltage generator to generate a common voltage having an application level instructed by the controller and to supply the common voltage to the liquid crystal display panel.

Abstract: A method of extracting an optimized digital variable resistor (“DVR”) value of a display panel, the method including varying a DVR value, corresponding to a common voltage, and applying the varied DVR values to the display panel, measuring brightness values of the display panel for at least two frames, extracting flicker values corresponding to the varied DVR values using the brightness values, and extracting an optimized DVR value by generating first to third coordinate values in which coordinate values have x-coordinate values and y-coordinate values representing DVR values and flicker values, respectively, calculating a first linear function of a first straight line connecting two of the coordinate values, and a second linear function of a second straight line using the first linear function and the other of the coordinate values, and extracting an x-coordinate value at an intersection point of the first and second lines, as the optimized DVR value.

Abstract: The present invention realizes proper driving circuits in a driving-circuit integral type liquid crystal display device which has an increased screen size. The liquid crystal display device includes a liquid crystal display panel and a driving circuit which supplies video signals to video signal lines formed on the liquid crystal display panel. The driving circuit is comprised of a first driving circuit which is formed in a step similar to a step for forming pixels provided to the liquid crystal display panel and a second driving circuit which is connected to the liquid crystal display panel after formation of the liquid crystal display panel. The first driving circuit is constituted of a switching circuit which is capable of distributing an output of the second driving circuit to a plurality of video signal lines.

Abstract: A pixel unit in the present invention is divided into two sub-pixels. Each sub-pixel includes a thin film transistor, a liquid crystal capacitor and a storage capacitor. The two transistors respectively located in different sub-pixels are connected to different scan lines. One of the two transistors is connected to the data line through another transistor. Therefore, two different pixel voltages are formed in a pixel.

Abstract: An electro-optical device includes pixels that are provided to correspond to intersections of a plurality of rows of scanning lines and a plurality of columns of first data lines, each pixel having an pixel electrode, a common electrode that faces the pixel electrode, a first transistor that is turned on when a corresponding scanning line is selected to supply a data signal from a first data line to the pixel electrode, and a second transistor that is turned on when another scanning line than the corresponding scanning line is selected prior to the corresponding scanning line to supply a data signal from the first data line or a data line different from the first data line to the pixel electrode, a scanning line driving circuit that selects the plurality of rows of scanning lines according to a predetermined sequence, when one scanning line is selected, applies a first voltage so as to turn on the first or second transistor, when the selection ends, applies a second voltage so as to turn off the first and sec

Abstract: A pixel unit in the present invention is divided into two sub-pixels. Each sub-pixel includes a thin film transistor, a liquid crystal capacitor and a storage capacitor. The two thin film transistors respectively located in different sub-pixels are connected to different scan lines. One of the two thin film transistors is connected to a data line through another transistor. Therefore, two different pixel voltages are formed in a pixel.

Abstract: The present invention provides a transflective LCD including a plurality of pixel units defined by scan lines and data lines. Each pixel unit includes two sub-pixels. Each sub-pixel includes a storage capacitor. The two storage capacitors are connected to different voltage sources and correspond to a reflection region and a transmission region in a pixel unit respectively to modify the pixel voltage.

Abstract: A display panel for driving a display panel in response to data and gate signals, includes first and second switching sections, a timing control section, a driving voltage generating section, a gate driving section and data driving section. The first switching section switches a source voltage in response to a first switching signal. The timing control section outputs a gate control signal and a data control signal in response to the source voltage. The driving voltage generating section receives the source voltage to output first, second and third driving voltages. The second switching section switches the first, second and third driving voltages. The gate driving section outputs the gate signals in response to the first and second driving voltages. The data driving section outputs the data signals in response to the third driving voltage. The display panel eliminates a noise generated when an electric power is off.

Abstract: A charge transfer circuit of a liquid crystal display includes at least one inductive element connectable between first and second common terminals, to a first and to a second groups of lines of the display, respectively.

Abstract: A liquid crystal display system reduces a consumed current and reduces generation of heat in a data integrated circuit, the liquid crystal display device includes a liquid crystal cell array, a first charge sharing circuit arranged on one side of the liquid crystal cell array to pre-charge the data lines before the data lines are charged with a data voltage, and a second charge sharing circuit arranged outside the other side of the liquid crystal cell array to pre-charge the data lines before the data lines are charged with a data voltage.

Abstract: A drive circuit that is an example of the present invention is a drive circuit of a display device for outputting in parallel the analog picture signals generated based on the digital picture signals inputted in serial. This circuit comprises a level shift circuit for converting the voltage level of the digital picture signals that were inputted in serial, a D/A conversion circuit for generating analog picture signals based on the digital picture signals that were subjected to level conversion with the level shift circuit, and an expansion circuit connected to the output side of the D/A conversion circuit or between the level shift circuit and the D/A conversion circuit and serving to expand and hold the inputted serial picture signals in parallel and output the picture signals in parallel. The level shift circuit is thus formed in the front stage of the picture signal register circuit.

Abstract: A display driving circuit includes a first interface unit, a signal discriminating circuit, a signal distributing circuit, a driver logic circuit and a synchronization processing unit. The first interface unit receives a first signal through a first interface from a host. The signal discriminating circuit discriminates whether the first signal corresponds to a first video signal or a second video signal. The signal distributing circuit divides the first signal into the first and second video signals based on a discrimination result of the signal discriminating circuit. The driver logic circuit drives a first display panel based on the first video signal. The second interface unit converts the second video signal into a second signal and provides the second signal through a second interface to an external display device. The synchronization processing unit receives a synchronization signal from the external display device and provides the synchronization signal to the host.

Abstract: A liquid crystal display includes a gate driver, a source driver, a plurality of scan lines, a plurality of data lines, and a plurality of pixel units arranged in an array. The gate driver is used for generating scan signals. The scan signals include a first voltage level, a second voltage level greater than the first voltage level, and a third voltage level less than the first voltage level. The source driver is used for generating data signals. The plurality of scan lines includes a first scan line, a second scan line, and a third scan line, for delivering the scan signals. The plurality of data lines includes a first data line for delivering the data signals. Each pixel unit includes a first pixel electrode, a first transistor, a second pixel electrode, a second transistor, and a level adjustment unit.

Abstract: In a first display mode, only the information in a first sub-area (W1) of the display screen of a bi-stable matrix display (100) has to be updated. In a second display mode, the information in a second sub-area (W2) of the display screen has to be updated. The information in the first sub-area (W1) is displayed using optical states which require first drive voltage waveforms (DV1) having a maximum duration equal to a first image update period (IUP1). The information in the second area (W2) is displayed using optical states which require second drive voltage waveforms (DV2) having a maximum duration equal to a second image update period (IUP2). The optical states allowed to be used during the first mode are selected to obtain a first image update period (IUP1) which is shorter than the second image update period (IUP2). In this manner, the refresh rate of the information in the first area (W1) is higher than the refresh rate in the second area (W2).

Abstract: An exemplary thin film transistor liquid crystal display (TFT-LCD) (100) includes an LCD panel having a number n (where n is a natural number) of gate lines G1-Gn that are parallel to each other, a data driving circuit (120), and a gate driving circuit (110). The gate driving circuit sequentially providing 3-level scanning signals to scan the gate lines G1-Gn. Each 3-level scanning signal sequentially includes a gate-on voltage, a feed-through compensation voltage, and a gate-off voltage wherein the gate-on voltage starts to be provided to a (Gi+1)th (1?i?n?1) of the gate lines G1-Gn at the time when the feed-through compensation voltage starts to be provided to a (Gi)th of the gate lines G1-Gn.

Abstract: A light-emitting element capable of emitting light having a preferred gradation level depending on display data. During a precharge period, a data driver applies a precharge voltage to a capacitor via a data line. After the application of the precharge voltage, a voltage converter reads a first reference voltage Vref(t1) and a second reference voltage Vref(t2) to generate a compensation voltage based on a difference between the respective reference voltages. Based on the compensation voltage, a voltage calculator compensates an original gradation level voltage Vorg having a value in accordance with display data generated by a gradation level voltage generator. The voltage calculator generates a compensated gradation level voltage Vpix corresponding to a variation amount of an element characteristic for a transistor Tr13 for driving light emission to apply the compensated gradation level voltage Vpix to a data line Ld.

Abstract: A voltage conversion device has a non-linear gain, for converting analog voltage provided by an analog voltage source. The voltage conversion device comprises a gain decision module, a voltage selection module, and a voltage output module. The gain decision module comprises an analog to digital (A/D) converter and a gain selector. The A/D converter is used for converting analog voltage provided by the analog voltage source into digital signals. The gain selector is used for determining a gain. The voltage selection module is used for outputting a direct-current (DC) voltage. The voltage output module has a first input end coupled to the gain selector, an output end coupled to the gain selector, and a second input end coupled to the voltage selection module, for outputting an amplified result of the DC voltage outputted from the voltage selection module.

Abstract: In a display panel, a dummy pulse of a predetermined voltage signal is superimposed on a data signal and the dummy pulse has an amplitude much larger than the amplitude of the data signal, and thus a signal waveform applied to a light modulation layer such as LC layer is changed to a high frequency wave. The applying position of the dummy pulse is varied according to each color of R, G and B, or varied according to frame or field. By performing a MLS drive with the dummy pulse superimposed on the data signal, the amplitude difference between the selection signal and the data signal can be reduced. Thus, a common driver IC and a segment driver IC can be formed as one semiconductor chip to be placed on one side, constructing a three side free type.

Abstract: A liquid crystal display includes a source driver, a gate driver, a plurality of pixel units, a plurality of detecting circuits, and a decision unit. Each pixel unit includes a switch transistor and a liquid crystal capacitor. When turned on by a scan signal generated by the gate driver, the switch transistor conducts a data signal voltage generated by the source driver to the liquid crystal capacitor, to adjust alignment of liquid crystal molecules. Each detecting circuit is electrically connected to one pixel unit, and includes a first transistor, a second transistor, a third transistor and a sensor unit. The first transistor conducts a constant voltage to the sensor unit when turned on, and generates a dynamic voltage when turned off. Based on the dynamic voltage, the second transistor generates a dynamic current. The third transistor conducts the dynamic current to the decision unit when turned on.

Abstract: A liquid crystal display (“LCD”) having a plurality of gray voltages with varying magnitudes and a driving method thereof. An LCD includes a reference voltage generator changing level of a supply voltage based on a first signal to generate a reference voltage. The first signal varies depending on the surrounding brightness of the LCD, the brightness of the on-screen images of the LCD, and user's manipulation. The LCD also includes a gray voltage generator generating a plurality of gray voltages with magnitudes varying dependent on the magnitude of the reference voltage and a predetermined voltage such as a ground voltage. The LCD further includes a plurality of gate lines transmitting a plurality of gate signals, a plurality of data lines transmitting the gray voltages, and a plurality of pixels. Each pixel has a switching element connected to one of the gate lines and one of the data lines and transmitting the gray voltages to the pixels under the control of the gate signal.

Abstract: A liquid crystal display device includes first and second substrates facing each other, a layer of liquid crystal molecules interposed between the first and second substrates, a plurality of color displaying sub-pixels including first, second and third sub-pixels defined on the first and second substrates, first common electrodes in the first, second and third sub-pixels on the first substrate, first pixel electrodes in the first, second and third sub-pixels on the first substrate and alternately arranged with the first common electrodes, color filter layers in the first, second and third sub-pixels on the second substrate, a plurality of viewing angle restricting sub-pixels including fourth, fifth and sixth sub-pixels defined on the first and second substrates, the fourth, fifth and sixth sub-pixels corresponding one-to-one with the first, second and third sub-pixels, second pixel electrodes in the fourth, fifth and sixth sub-pixels on the first substrate, and second common electrodes in the fourth, fifth an

Abstract: A gray scale bistable electro-optic display is driven by storing a look-up table containing data representing the impulses necessary for transitions, storing data representing at least an initial state of each pixel of the display, storing data representing temporal and gray level prior states of each pixel, receiving an input signal representing a desired final state of at least one pixel of the display; and generating an output signal representing the impulse necessary for a transition, as determined from the look-up table, dependent upon the temporal and gray level prior states. Other similar methods for driving such displays are also disclosed.

Abstract: A display device including a liquid crystal display (LCD) device with an improved image quality is provided. The LCD includes a liquid crystal (LC) panel having horizontal lines and vertical lines arranged in a matrix configuration; a gate driver for supplying a scan signal to the horizontal lines; and a data driver inverting a polarity of interlace pixel data by a unit of at least two fields, converting the interlace pixel data every field according to a gamma voltage, and supplying the converted pixel data to the vertical lines.

Abstract: A flat panel display includes a plurality of pixel circuits, each pixel circuit including a switch and a storage capacitor, in which the storage capacitor receives pixel data from a data line when the switch is turned on. A scan driver controls the switches of the pixel circuits, in which the scan driver turns on a first switch of a first pixel circuit for a first length of time within a frame period, and turns on a second switch of a second pixel circuit for a second length of time within the frame period, the first length of time being different from the second length of time.

Abstract: A liquid crystal display and a driving method thereof. A gate driver drives a first pixel of the display via a first scanning line within a frame period including first and second data writing intervals. A first data voltage and a second data voltage are transmitted to the first pixel in the first and second data writing intervals, respectively. After the first data writing interval, a first color light source illuminates the first pixel. After the second data writing interval, a second color light source illuminates the first pixel. In a reset interval between the first and second data writing intervals, a voltage of a common line coupled to a storage capacitor of the first pixel is changed from a first common voltage to a second common voltage so that a voltage of a first liquid crystal capacitor of the first pixel is changed.

Abstract: A liquid crystal display (LCD) device includes an LCD panel having a plurality of data lines and a plurality of gate lines crossing the data lines, a data driving circuit to generate a data voltage, a demultiplexer to apply the data voltage from the data driving circuit to the data lines using a plurality of switching devices, and a control signal generator to generate a plurality of control signals having a first polarity of voltage in order to turn on the switching devices and in order to add a second polarity of voltage to the control signals.

Abstract: A light-emitting element (OLED) is caused to emit light with preferred brightness and gradation level depending on display data. During a precharge period, a data driver applies a precharge voltage (Vpre) to a capacitor (Cs) via a data line (Ld). After the application of the precharge voltage, a voltage converter reads, after a transient response period (Ttrs), a reference voltage Vref to generate a compensation voltage (a·Vref). A voltage calculator compensates, based on the compensation voltage (a·Vref), an original gradation level voltage Vorg having a value in accordance with display data generated by a gradation level voltage generator. As a result, the voltage calculator generates a compensated gradation level voltage Vpix corresponding to a variation amount of an element characteristic for a transistor Tr13 for driving light emission to apply the compensated gradation level voltage Vpix to a data line Ld.

Abstract: The invention provides a method for controlling the grey-scale modulation of a reflective bistable cholesteric display by applying selected sequences of high and low pulses to modulate the cholesteric domain size and helical axis orientation. Non-mesogenic dopants may also be added to reduce the drive voltage.

Abstract: Gate-driving circuitry of a thin film transistor array panel is formed on the same plane as a display area of the transistor array panel. The gate-driving circuitry includes driving circuitry and signal lines having apertures. Thus, a sufficient amount of light, even though illuminated from the thin film transistor array panel side, can reach a photosetting sealant overlapping at least in part the gate-driving circuitry. The thin film transistor array panel and the counter panel are put together air-tight and moisture-tight. Consequently, the gate-driving circuitry can avoid corrosion by moisture introduced from outside. Gate-driving circuitry malfunctions can also be reduced.

Abstract: A LCD device, in which a multi-grayscale level state is produced in a liquid crystal layer by applying a different voltage thereto, includes a liquid crystal display panel having the liquid crystal layer between first and second electrodes, an electrode drive circuit applying drive voltage pulses generated from multi-voltage power sources to the first and the second electrodes, and a multi-voltage power generator circuit. The LCD device further includes a multi-voltage power switch circuit supplying the first or the second multi-voltage power sources from the first or the second multi-voltage power units to the electrode drive circuit, and a control circuit, in a first drive step, setting the first multi-voltage power unit to an active state, and, in a second drive step, setting the second multi-voltage power unit to the active state.

Abstract: An LCD device operated by a remote controller comprises: an LCD unit having a display electrode supplied with voltage based on a video signal and a counter-electrode supplied with counter-electrode voltage; a remote control receiver for receiving a flicker adjustment control signal from the remote controller; a microcomputer for outputting a flicker voltage control signal based on the flicker adjustment control signal; a counter-electrode voltage control unit for generating a flicker adjustment voltage whose value varies according to the flicker voltage control signal, and outputting a DC counter-electrode voltage based on the flicker adjustment voltage; and a DC-AC converter for converting the DC counter-electrode voltage to AC voltage to be applied to the counter-electrode. An operator (human) can make flicker adjustment at a position on the front side of, and if necessary distanced from, the LCD device where the operator can directly and easily view an image on the LCD.

Abstract: A display device which has a liquid crystal display which has a plurality liquid crystal pixels arranged in a matrix and which writes an image thereon after resetting the liquid crystal. The method of writing on the liquid crystal display can be selected from driving methods according to interlace scanning in which a frame is divided into a plurality of fields and writing by interlace scanning is performed and driving methods according to sequential scanning in which scanning lines are subjected to writing serially. When high-speed writing is required, for example, when display of a motion picture, display of inputted letters or scroll display is desired, one of the driving methods according to interlace scanning is selected. In interlace scanning, based on the end of a blackout state of a scanning line in a field, selection of a scanning line in the next field for writing is started.