Lg Display Co., Ltd.

Seung Cheol O

Jin Cheol Hong

Jong Woo Kim

Su Hyuk Jang

Sin Ho Kang

Soon Dong Cho

Man Gyu Park

Tae Hun Kim

The liquid crystal display device includes a liquid crystal panel including a common voltage correction unit that obtains predominant-polarity data based on polarities of image data to be supplied to pixel cells arranged in an nth one of pixel rows, obtains predominant-polarity data based on polarities of image data to be supplied to pixel cells arranged in an (n+1)th one of the pixel rows adjacent to the nth pixel row, obtains a sum of the two predominant-polarity data, and selects and outputting any one of a plurality of predetermined correction values based on the sum, and a common voltage output unit that corrects a common voltage based on the correction value from the common voltage correction unit and supplies the corrected common voltage to a common electrode.

Liquid crystal display device and method for driving the same

A liquid crystal display for changing a supply sequence of a scanning pulse with which a plurality of gate lines are supplied to realize a one dot inversion, and a driving method thereof are disclosed. In the liquid crystal display, a liquid crystal display panel has a plurality of data lines and a plurality of gate lines, which are crossed each other, and pixels, which are defined by the lines. A gate driver supplies scanning pulses to the gate lines, and changes a supply sequence of the scanning pulses for each frame. A data driver converts digital video data into data voltages and periodically inverts a polarity of the data voltages to supply the data voltages in accordance with a supply sequence of the scanning pulses. And a timing controller supplies the digital video data to the data driver, and controls the data driver and the gate driver, and wherein a polarity of data voltages, which are supplied to the liquid crystal display panel, is inverted for each liquid crystal cell and a polarity of a data voltage which is outputted from the data driver, is inverted for every two to four horizontal periods.

Liquid crystal display and driving method thereof

A gate driving apparatus and image display device using the same and driving method thereof comprises a start pulse generator which generates a second gate start pulse by a logic operation of a first gate start pulse and a gate output enable signal, a shift register which generates a shift signal by sequentially shifting the second gate start pulse in accordance with a gate shift clock, and an output unit which outputs the shift signal in accordance with the gate output enable signal.

Gate driving apparatus for preventing distortion of gate start pulse and image display device using the same and driving method thereof

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Seoul, South Korea

Seung Cheol O