Liquid crystal display device

Details Liquid crystal display device Liquid crystal display device

2011-07-26

2011-07-26

Connelly Cushwa, Michelle R (Department: 2874)

Liquid crystal cells, elements and systems

Particular excitation of liquid crystal

Electrical excitation of liquid crystal

C345S050000, C345S097000

Reexamination Certificate

active

07986376

ABSTRACT:
It is possible to realize a driver circuit which exhibits low power consumption and high image quality in a liquid crystal display device used in miniaturized portable equipment. In a liquid crystal display device which includes a liquid crystal display element and a liquid crystal driver circuit, the liquid crystal driver circuit is mounted on one side of a liquid crystal display panel. The liquid crystal driver circuit can output counter electrode voltages of two systems and hence, the liquid crystal driver circuit can select a first mode in which the first counter voltage and the second counter voltage have the opposite polarities from each other and a second mode in which the first counter voltage and the second counter voltage have the same polarity. Due to such constitution, while driving the liquid crystal display device in the first mode, the second mode is selected depending on a video signal thus realizing power saving.

REFERENCES:
patent: 2007/0063944 (2007-03-01), Sato et al.
patent: 2008/0297673 (2008-12-01), Takahashi
patent: 2009/0231257 (2009-09-01), Ooki et al.

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