Method for driving simple matrix-type liquid crystal display
AssigneeSamsung Display Devices Co., Ltd.
InventorsTsuneo Yamazaki, Eui-yeul Park
Life of this patent
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Abstract
A simple matrix-type liquid crystal display is driven by a frame signal for indicating the starting point of each frame on a screen, a latch clock signal for latching an input data signal in a unit of a horizontal line of the liquid crystal display, and a modulation signal for controlling polarity of a voltage applied to each cell of the liquid crystal display. The phase difference between the modulation signal and the frame signal is controlled to lower and minimize flicker intensity. The reliability of the liquid crystal cell is preserved and flicker is prevented so that the picture quality is improved and life of the simple matrix-type liquid crystal display is extended.
Claims8
A method for driving a simple matrix-type liquid crystal display (LCD) having a plurality of cells using a frame signal, a latch clock signal, and a modulation signal, the method comprising:
- indicating the starting point of each frame on a screen using the frame signal,
- latching an input data signal in a unit of a horizontal line using the latch clock signal,
- controlling polarity of a driving voltage applied to respective cells of the LCD using the modulation signal, and
- reducing flicker intensity of the LCD by controlling phase difference between the modulation signal and the frame signal to approach 180.degree..
Dependencies are inferred from the claim text.