Liquid crystal display device and electronic device

Details Liquid crystal display device and electronic device Liquid crystal display device and electronic device

2006-07-10

2009-12-15

Rojas, Omar (Department: 2874)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S139000, C345S090000, C345S094000

Reexamination Certificate

active

07633592

ABSTRACT:
A relaxation time in a common inversion drive of a liquid crystal display device is minimized. The liquid crystal display device includes a plurality of scan lines, a plurality of data lines that intersects the plurality of scan lines, a plurality of pixel switching devices dispose corresponding to intersections of the data lines and the scan lines, a plurality pixel electrodes connected with the plurality of pixel switching devices, a common electrode facing the pixel electrodes to form capacitors, a common power supply circuit connected with the common electrode and outputting a square wave alternating between a higher electric potential and a lower electric potential at a regular intervals and a first reference electric potential power supply circuit outputting a first reference electric potential to the scan lines through a low impedance at a common electric potential inversion timing that is a timing of alternation of the square wave, wherein an impedance from the common power supply circuit to the common electrode is approximately equal to an impedance from the first reference electric potential power supply circuit to the scan lines.

REFERENCES:
patent: 4795239 (1989-01-01), Yamashita et al.
patent: 7312638 (2007-12-01), Kobashi
patent: 7414602 (2008-08-01), Kobashi
patent: 62-49399 (1987-03-01), None

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