Abstract: An LCD device is disclosed, to minimize the signal distortion by decreasing the instability of voltage in a-Si:H TFT of a gate driving signal output unit, which includes a signal controller for outputting first and second control signals Q and /Q; a pull-up transistor between a clock signal terminal CLK and a gate driving signal output terminal for receiving the first control signal Q, the pull-up transistor having a first gate electrode, a first source electrode and a first drain electrode, wherein the pull-up transistor has an asymmetric structure in a first area of the first source electrode overlapped with the first gate electrode and a second area of the first drain electrode overlapped with the first gate electrode; and a pull-down transistor connected between the gate driving signal output terminal and a ground voltage terminal, wherein the pull-down transistor receives the second control signal.

Abstract: A display apparatus is disclosed. The display apparatus includes: a plurality of scan signal lines and a plurality of data signal lines that cross each other; a plurality of pixels formed at each crossing of the scan signal lines and the data signal lines, wherein each of the pixels includes sub-pixels that display red color, green color, blue color and white color in response to a scan signal from the scan signal lines and a data signal from the data signal lines, wherein the sub-pixels are arranged in a 2×2 matrix; a scan signal driving circuit including a plurality of stages that supplies the scan signal to the scan signal lines; and a data signal driving circuit that supplies the data signal to the data signal lines, wherein the scan signal driving circuit, the pixels, the scan signal lines and the data signal lines are formed on a same substrate.

Abstract: A liquid crystal display device is disclosed which includes first, second and third data lines arranged in one direction, a data driver for alternately supplying a data signal of a first polarity and a data signal of a second polarity to each of the first, second and third data lines during an interval of two horizontal periods, first and second gate lines arranged to cross the first to third data lines, a gate driver for sequentially driving the first and second gate lines, and first red, first green, first blue, second red, second green and second blue pixels located between the first gate line and the second gate line and arranged in order along the first and second gate lines. The first red pixel cell is connected to one side of the first data line and the second gate line. The first green pixel cell is connected to the other side of the first data line and the first gate line. The first blue pixel cell is connected to one side of the second data line and the first gate line.

Abstract: A liquid crystal display (LCD) device partially or substantially blocks light from a light source from exciting a semiconductor layer. The LCD device includes a substrate, a semiconductor layer, a light-shielding layer, and a light source. The light source directs light toward a lower surface of the substrate. The light-shielding layer is formed between the substrate and the semiconductor layer. Some or all of the light directed towards the semiconductor layer by the light source is blocked by the light-shielding layer.

Abstract: An LCD device is disclosed, to minimize the signal distortion by decreasing the instability of voltage in a—Si:H TFT of a gate driving signal output unit, which includes a signal controller for outputting first and second control signals Q and /Q; a pull-up transistor between a clock signal terminal CLK and a gate driving signal output terminal for receiving the first control signal Q, the pull-up transistor having a first gate electrode, a first source electrode and a first drain electrode, wherein the pull-up transistor has an asymmetric structure in a first area of the first source electrode overlapped with the first gate electrode and a second area of the first drain electrode overlapped with the first gate electrode; and a pull-down transistor connected between the gate driving signal output terminal and a ground voltage terminal, wherein the pull-down transistor receives the second control signal.

Abstract: A liquid crystal display device is disclosed which includes first, second and third data lines arranged in one direction, a data driver for alternately supplying a data signal of a first polarity and a data signal of a second polarity to each of the first, second and third data lines during an interval of two horizontal periods, first and second gate lines arranged to cross the first to third data lines, a gate driver for sequentially driving the first and second gate lines, and first red, first green, first blue, second red, second green and second blue pixels located between the first gate line and the second gate line and arranged in order along the first and second gate lines. The first red pixel cell is connected to one side of the first data line and the second gate line. The first green pixel cell is connected to the other side of the first data line and the first gate line. The first blue pixel cell is connected to one side of the second data line and the first gate line.

Abstract: A display apparatus is disclosed. The display apparatus includes: a plurality of scan signal lines and a plurality of data signal lines that cross each other; a plurality of pixels formed at each crossing of the scan signal lines and the data signal lines, wherein each of the pixels includes a sub-pixels that display red color, green color, blue color and white color in response to a scan signal from the scan signal lines and a data signal from the data signal lines, wherein the sub-pixels are arranged in a 2×2 matrix; a scan signal driving circuit including a plurality of stages that supplies the scan signal to the scan signal lines; and a data signal driving circuit that supplies the data signal to the data signal lines, wherein the scan signal driving circuit, the pixels, the scan signal lines and the data signal lines are formed on a same substrate.

Abstract: A shift register and an LCD device to prevent the deterioration of a transistor by controlling a bias stress are disclosed. The shift register includes a plurality of stages for sequential shift signals, wherein each of the plurality of stages is connected with first and second supplying voltage input lines having opposite phases inversed by at least every frame, a start pulse input line, and at least one clock signal input line in which a phase of a first logic state is shifted in sequence, and a clock signal inputted to the clock signal input line is maintained in a second logic state different from the first logic state during a blanking time between frames.

Abstract: A liquid crystal display device is disclosed which includes first, second and third data lines arranged in one direction, a data driver for alternately supplying a data signal of a first polarity and a data signal of a second polarity to each of the first, second and third data lines during an interval of two horizontal periods, first and second gate lines arranged to cross the first to third data lines, a gate driver for sequentially driving the first and second gate lines, and first red, first green, first blue, second red, second green and second blue pixels located between the first gate line and the second gate line and arranged in order along the first and second gate lines. The first red pixel cell is connected to one side of the first data line and the second gate line. The first green pixel cell is connected to the other side of the first data line and the first gate line. The first blue pixel cell is connected to one side of the second data line and the first gate line.

Abstract: In a gate driver including a plurality of stages sequentially outputting shifted signals, each of the stages includes a first controller for controlling a first node in response to a first scan signal and a second scan signal; a second controller for controlling second and third nodes in response to the first scan signal and a voltage at the first node; and an output unit for selectively outputting one of a plurality of clock signals and a first power supply voltage in response to voltages at the first, second and third nodes, wherein second and third power supply voltages different from each other are switched to be supplied to the second and third nodes.

Abstract: Device and method for driving a liquid crystal display device where a driving voltage level is varied with the temperature of an operating environment of the liquid crystal display device to improve display quality. The device includes a liquid crystal display panel, gate and data drivers for driving gate and data lines of the liquid crystal display panel, a timing controller for controlling the data and gate drivers, a power source unit for transforming an external power into a rated voltage level required for driving the liquid crystal display device and forwarding the power, and a driving voltage generating unit for adjusting a voltage level of the power transformed thus in conformity with an environmental temperature to generate a positive polarity driving voltage and using the driving, voltage for generating a plurality of driving voltages required for driving units, including the liquid crystal panel, the gate driver and data driver.

Abstract: A shift register for use with a liquid crystal display device includes a plurality of stages. A stage of the shift register includes a first controller, a second controller and an output buffer. The first controller charges and discharges a first node. The second controller charges and discharges a second node and a third node. The output buffer outputs a first output signal in response to the state of the first node and a second output signal in response to the state of the second and third nodes. The shift register may be adaptive to avoid a malfunction caused by a gate bias stress.

Abstract: A liquid crystal display device includes: a liquid crystal display panel including an upper substrate, a lower substrate on which a plurality of gate lines and data lines cross each other, and a liquid crystal layer formed between the upper substrate and the lower substrate; a gate driving circuit for driving the plurality of gate lines; and a MUX circuit disposed at a surplus space portion of the lower substrate, having a plurality of inverters, an input terminal thereof connected to the gate driving circuit and an output terminal thereof connected to the plurality of gate lines corresponding to the gate driving circuit, and sequentially transmitting a gate signal into a plurality of input signals.

Abstract: A data driving apparatus and method for a liquid crystal display (LCD) device is provided, the apparatus including: a liquid crystal panel; a timing controller configured to output control signals for controlling the driving of a gate driving unit and a data driving unit; a gate driving unit configured to output a gate on signal to gate lines of the liquid crystal panel; a data driving unit configured to drive data lines of the liquid crystal panel, the data driving unit providing an overdriving signal to at least one of a pair of pixel signals of the same polarity applied to adjacent data lines for supply to longitudinally adjacent pixels of the liquid crystal panel, and wherein the data driving unit drives the liquid crystal panel according to a longitudinal two-dot inversion polarity pattern.

Abstract: A driving circuit for a flat panel display device includes first and second generation units generating m-phase circulation enable control clocks and n-phase circulation form generation clocks; and a plurality of shift register stages generating output signals by using the m-phase circulation enable control clocks and the n-phase circulation form generation clocks. Each shift register stage includes an input terminal receiving the m-phase circulation enable control clocks; first and second nodes outputting first and second signals, respectively, using the m-phase circulation enable control clocks; a first transistor connected to the first node and receiving the n-phase circulation form generation clocks; a second transistor connected to the second node and the first transistor; and an output terminal between the first and second transistors and outputting one of the output signals.

Abstract: An active matrix display device includes: a display panel; a gate driver; and a data driver, wherein the gate driver includes a plurality of shift registers to output signals that are sequentially shifted, each of the shift registers including: a first control part for controlling a first node in response to a first clock signal; a second control part for controlling second and third nodes in response to the start signal and a second clock signal; and an output part to selectively output one of a third clock signal and a first supply voltage in response to voltages of the first, second, and third nodes, whereby second and third supply voltages, which are different from each other, are switched for application at the second and third nodes.

Abstract: An apparatus and method of driving an LCD device is disclosed, which has a simplified structure by decreasing the number of signal transmission lines included in a shift register, the apparatus comprising a display panel to display images; a gate driver to drive gate lines of the display panel; a timing controller to control the gate driver by generating at least three clock pulses having the different phases from one another; and a start pulse generator to generate a start pulse using at least two clock pulses among at least three clock pulses, and to supply the generated start pulse to the gate driver.

Abstract: A liquid crystal display device is disclosed which includes first, second and third data lines arranged in one direction, a data driver for alternately supplying a data signal of a first polarity and a data signal of a second polarity to each of the first, second and third data lines during an interval of two horizontal periods, first and second gate lines arranged to cross the first to third data lines, a gate driver for sequentially driving the first and second gate lines, and first red, first green, first blue, second red, second green and second blue pixels located between the first gate line and the second gate line and arranged in order along the first and second gate lines. The first red pixel cell is connected to one side of the first data line and the second gate line. The first green pixel cell is connected to the other side of the first data line and the first gate line. The first blue pixel cell is connected to one side of the second data line and the first gate line.

Abstract: A liquid crystal display (LCD) device includes a data drive circuit that inverts polarities of data every 2k horizontal periods (k is an integer not less than 2); and an LCD panel including a plurality of data lines and a plurality of gate lines crossing each other to define a plurality of pixels, each pixel including a switching device, wherein source electrodes of the switching devices in the pixels arranged in a vertical direction are connected to two different data lines.

Abstract: An LCD device includes at least one data line, a plurality of first pixel cells connected in common to one side of the data line, a timing controller for alternately outputting first and second-polarity data signals at intervals of at least two successive periods, a data modulator for outputting the first and second-polarity data signals supplied from the timing controller, the data modulator modulating a grayscale value of one of the first and second-polarity data signals respectively supplied in two successive periods from the timing controller, and outputting the modulated data signal, and a data driver for receiving the first and second-polarity data signals from the data modulator, and alternately outputting the first and second-polarity data signals at intervals of at least two successive periods, to supply the first and second-polarity data signals to the data line.