Abstract: An exemplary liquid crystal display (20) includes gate lines (21), a gate driver (25) configured for receiving input signals, a comparator (28), a reference voltage generator (29) configured for outputting a reference voltage to the comparator, and a timing control circuit (27). The gate driver is further configured for driving the gate lines. Falling edges of waveforms of the input pulse signals drop gradually from a first voltage to a second voltage. The comparator is configured for receiving the input pulse signals and the reference voltage, and outputting a control signal according to the input pulse signals and the reference voltage. The timing control circuit is configured for receiving the control signal from the comparator, and, according to the control signal, outputting output enable signals to the gate driver to adjust gate signals applied to the gate lines.

Abstract: A 2D-3D switchable display device includes a display panel and a polarization element. The display panel includes a plurality of left-eye image regions, a plurality of right-eye image regions alternating with the left-eye image regions, and a plurality of switchable regions each disposed between a corresponding right-eye image region and a left-eye image region adjacent to the corresponding right-eye image region. The polarization element is configured to adjust a left-eye image provided by the left-eye image regions and a right-eye image provided by the right-eye image regions to achieve different polarizations. When the 2D-3D switchable display device works in a 3D mode, each switchable region displays a black sub-image; and when the 2D-3D switchable display device works in a 2D mode, each switchable region displays a gray sub-image.

Abstract: An exemplary liquid crystal display includes parallel data lines, a data driver configured for driving the data lines, a coupling line crossing the data lines, a common electrode layer, and a common voltage generator configured for applying common voltages to the common electrode layer. The common voltage generator is connected to the coupling line. When data driver applies a plurality of data signals to the data lines, the data signals generate an influence signal at the coupling line. The common voltage generator adjusts common voltages applied to the common electrode layer according to the influence signal. A related method for driving the liquid crystal display is also provided.

Abstract: A liquid crystal display (1) includes a liquid crystal panel (12) including a number of thin film transistors (123), a timing control circuit (16), a common voltage generating circuit (14) and a gamma circuit (13). The timing control circuit is configured for generating timing signals. The common voltage generating circuit is configured for generating a common voltage. The gamma circuit is configured for generating gray-scale voltages. When the liquid crystal panel is powered on, the common voltage is applied to the liquid crystal panel and reaches a predetermined value before the gray-scale voltages are applied to the liquid crystal panel and comes to predetermined values. And when liquid crystal panel is powered off the common voltage and the gray-scale voltages drops to 0V simultaneously by control of the common voltage generating circuit and the gamma circuit with the thin film transistors switched on.

Abstract: An LCD includes a liquid crystal panel having pixel electrodes, a timing controller for receiving image signals, a data driving circuit for receiving the timing control signals, the data signals and a predetermined voltage, converting the data signals into corresponding data voltages, and providing the data voltages to the pixel electrodes under control of the timing control signals, and a power circuit for providing a power voltage to the data driving circuit and the timing controller. The absolute value of a voltage difference between the common voltage and the predetermined voltage is a constant value. When the liquid crystal display is in a working state, the data driving circuit provides the data voltages to the pixel electrodes. When the liquid crystal display is in a power-off process, the data driving circuit provides the predetermined voltage to the pixel electrodes in order to display images corresponding to an identical gray scale.

Abstract: A backlight control circuit includes a secondary winding, a control circuit, a first circuit including a first capacitor and a first switching element, and a second circuit including a second switching element and a reactance element. A method for driving the backlight control circuit includes the control circuit switching off the first switching element, and the secondary winding outputting a startup AC voltage to the lamp. A first resonant circuit which includes the lamp, the secondary winding and the first circuit is formed, with a first resonant frequency suitable to light up the lamp. The control circuit switches on the first switching element, and the secondary winding outputs an operation AC voltage to the lamp. A second resonant circuit which includes the lamp, the secondary winding, the first and second circuit is formed, with a second resonant frequency suitable to keep the lamp lighted.

Abstract: An exemplary liquid crystal display (20) includes a liquid crystal panel (27) having at least one pixel block, a source driver (26) configured to drive the at least one pixel block, a backlight module having at least one light source block, a backlight driver (23) configured to drive the light source blocks, and a data processor (21) configured to provide gray level values and provide backlight control signals. The data processor receives display signals, converts the display signals to a plurality of primary gray level values, and averages the primary gray level values to obtain an average gray level value. The source driver and the backlight driver respectively generate data voltages and driving voltages to drive the at least one pixel block and the at least one pixel block according to the average gray level value. A related method for driving the liquid crystal display is also provided.

Abstract: An LCD includes a liquid crystal panel having a plurality of pixel units each including a liquid crystal capacitor, a scanning circuit for providing scanning signals to the pixel units, a data circuit for providing gray-scale voltage signals to the pixel units; and a timing controller for receiving at least one timing signal and providing a timing control signal to control a driving timing of the scanning circuit and the data circuit according to at least one timing signal. The timing controller outputs a reset control signal to the scanning circuit upon detecting that the liquid crystal display enters a power-off state based on the at least one timing signal. The reset control signal directs the scanning signal to activate all the pixel units to discharge liquid crystal capacitors. A method for driving a liquid crystal display is also provided.

Abstract: An exemplary backlight control circuit includes a load (250), an inverter circuit (230), a pulse width modulation integrated circuit (PWM IC) (210), a protecting circuit (270), and a feedback circuit (240). The load (250) includes two backlight lamps (251, 252) with first terminals (241). The PWM IC with a protecting output (215) is connected to the load via the inverter circuit. The protecting circuit has a reference voltage. The first feedback circuit is capable of outputting a voltage to the protecting circuit corresponding to the voltage detected from the first terminals. The protecting circuit is configured to control the PWM IC to stop outputting a backlight adjusting signal to the inverter circuit such that the inverter circuit stops driving the load when the output voltage is higher than the reference voltage of the protecting circuit.

Abstract: An exemplary backlight control circuit includes a transformer, a control circuit, a lamp. The control circuit and the transformer form an inverter circuit to providing an alternating current (AC) voltage for driving the lamp. When the backlight control circuit works in a startup mode, the backlight control circuit defines a first current path including the lamp and the first current path forms a first resonant circuit. When the backlight control circuit works in an operation mode, the backlight control circuit defines a second current path including the lamp and the second current path forms a second resonant circuit. The first and second resonant circuits have different resonant frequencies from each other.

Abstract: A liquid crystal display includes a liquid crystal panel, a drive circuit, and a power circuit. The drive circuit includes a gate driver, a timing control circuit, and a wave signal generation circuit. The timing control circuit sends a timing control signal to the gate driver and the wave signal generation circuit. The wave signal generation circuit generates a control signal according to the timing control signal, and generates a wave signal according to the control signal. The gate driver generates scan signals according to the timing control signal and the wave signal. Before the voltage of the scan signal changes from a maximum voltage to a minimum voltage, the voltage of the scan signal decreases to an invariable middle voltage that is between the minimum voltage and the maximum voltage during a fall time of the scan signal.

Abstract: An exemplary backlight control circuit includes a lamp, a transformer, and a lamp driving circuit. The lamp driving circuit includes a duty ratio determining unit, a duty ratio adjusting unit, and an output unit. The output unit is configured for outputting two pulse signals having a same duty ratio and opposite phases to the transformer. The transformer is configured for generating an alternating voltage for driving the lamp. The duty ratio determining unit is configured for determining if the duty ratio of the pulse signals is in a predetermined duty ratio range. The duty ratio adjusting unit is configured for adjusting the duty ratio of the pulse signals in order to adjust a brightness of the lamp.

Abstract: A liquid crystal display (LCD) device includes a display control circuit to receive data of each frame of an external image signal and a liquid crystal panel. When the data of an n+1 frame currently received is the same as that of an n frame previously received, the display control circuit outputs first gray scale voltages corresponding to the data of the n+1 frame to drive the liquid crystal panel. When the data of the n+1 frame is different from that of the n frame, the display control circuit generates data of at least one inserted frame between the data of the n and the n+1 frames, and outputs second gray scale voltages respectively corresponding to the data of the at least one inserted frame and the n+1 frame to drive the liquid crystal panel to display first an image of the least one inserted frame and then that of the n+1 frame. An absolute value of a second gray scale voltage exceeds that of a first gray scale voltage for a same gray scale.

Abstract: A liquid crystal display (LCD) device includes a common voltage generating circuit, a common voltage compensating circuit, and a liquid crystal panel. The liquid crystal panel includes gate lines parallel to each other, data lines isolated from and intersecting with the gate lines, common voltage lines parallel to the gate lines, and a coupling line isolated from and intersecting with the data lines. A method for driving the LCD device includes the common voltage compensating circuit generating and providing an original common voltage and the coupling line generating a feedback signal when data signals on the plurality of data lines change. The common voltage compensating circuit generates a compensating signal according to the feedback signal and compensates the original common voltage, and outputs a compensated common voltage to the common voltage lines.

Abstract: A display device includes a display panel having an adjustable refresh frequency, a data driver for receiving display data, generating driving voltages based on the display data, and driving the display panel to display images using the driving voltages, and a timing controller providing a timing control signal to the data driver. The timing control signal is generated according to the refresh frequency of the display panel. The data driver dynamically adjusts a setup time and a hold time of the data driver according to the timing control signal.

Abstract: An exemplary method for driving a liquid crystal display (200) includes: (a) providing a liquid crystal panel (20) including a plurality of pixels (205) arranged in a matrix to define sub-matrices of pixels, each sub-matrix including a plurality of pixel blocks; (b) providing a predetermined polarity pattern for each pixel block for a first frame period, such that each pixel has a predetermined polarity; (c) reversing the polarity of one of the pixels of each pixel block of each sub-matrix in each successive frame period, wherein a different pixel of each pixel block has its polarity reversed with each succeeding frame period, such that in one cycle of frame periods the polarities of all the pixels in each pixel block are reversed once only, and after each pixel block has its polarity reversed, the polarity of the pixel block is maintained for at least four successive frames periods.

Abstract: An exemplary external electrode fluorescent lamp includes a fluorescent tube having two electrodes fixed at two ends thereof, and two inner caps respectively holding the electrodes. Each inner cap includes an electrode receiving portion configured for receiving the electrode, a conductive layer provided at inner surfaces of the electrode receiving portion, a lead receiving portion integrally formed with the electrode receiving portion, and a conductive lead received in the lead receiving portion. The conductive layer contacts the conductive layer. A backlight module employing the external electrode fluorescent lamp is also provided.

Abstract: An exemplary backlight module includes lamps (21), a power supply circuit (20), a detecting circuit (22), and a direct current voltage compensation circuit (23). The power supply circuit is configured for supplying a driving voltage to the lamps. The first detecting circuit is configured for detecting a direct current voltage component of the driving voltage at one end of one of the lamps. The first direct current voltage compensation circuit is configured for providing a compensation direct current voltage to an opposite end of all the lamps according to the detected direct current voltage component.

Abstract: A driving circuit for a liquid crystal display includes a gate driver configured for generating scanning signals, a power circuit configured for providing an operating voltage to the gate driver, a timing controller configured for providing a clock signal having a variable frequency, and a voltage adjusting circuit located between the power circuit and the gate driver, for adjusting the operating voltage applied to the gate driver under control of the timing controller. Waveforms of the scanning signals include cutting angles corresponding to the variable frequency of the clock signal.

Abstract: A liquid crystal display (LCD) device includes data lines, pixel units, a first repair line intersecting and disposed on a first side of the data line, a second repair line intersecting and disposed on a second side of the data line, a delay circuit connected between the first repair line and the second repair line, and a control circuit. The control circuit controls a delay time of the delay circuit according to a position of each pixel unit corresponding to a broken data line.