Gamma reference voltage generating circuit and a method of...

Details Gamma reference voltage generating circuit and a method of... Gamma reference voltage generating circuit and a method of...

2007-02-13

2007-02-13

Nguyen, Jimmy H. (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S088000, C345S089000

Reexamination Certificate

active

10091116

ABSTRACT:
A gamma reference voltage generating circuit in a liquid crystal display includes a first gamma power unit outputting a first gamma voltage for a reflective driving mode of the liquid crystal display, a second gamma power unit outputting a second gamma voltage for a transmissive driving mode of the liquid crystal display, and a switching unit selecting one of the first gamma voltage of the first gamma power unit and the second gamma voltage of the second gamma power unit, and outputting the selected gamma voltage to a source driving circuit.

REFERENCES:
patent: 5640174 (1997-06-01), Kamei et al.
patent: 5854627 (1998-12-01), Kurihara et al.
patent: 6462724 (2002-10-01), Ozawa et al.
patent: 2000-193936 (2000-07-01), None
patent: 1999-017665 (1999-03-01), None

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