Liquid crystal display device with controlled positive and...

Details Liquid crystal display device with controlled positive and... Liquid crystal display device with controlled positive and...

2004-03-11

2008-10-21

Lefkowitz, Sumati (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S690000

Reexamination Certificate

active

07439946

ABSTRACT:
A liquid crystal display device includes a pixel electrode to which a video signal is supplied and a counter electrode to which a reference signal is supplied in each pixel. In the display device a positive-side gray scale voltage and a negative-side gray scale voltage are formed. The positive-side gray scale voltage and the negative-side gray scale voltage are formed with respect to the reference signal such that an average value of the positive-side gray scale voltage and the negative-side gray scale voltage is increased along with an increase of the signal amplitude of the video signal in the vicinity of the minimum thereof, the average value is decreased along with the further increase of the signal amplitude of the video signal, and the average value is increased along with an increase of the amplitude of the video signal in the vicinity of the maximum thereof.

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