Gamma voltage output circuit having the same DC current...

Details Gamma voltage output circuit having the same DC current... Gamma voltage output circuit having the same DC current...

2011-01-04

2011-01-04

Nguyen, Chanh (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

Reexamination Certificate

active

07864146

ABSTRACT:
An exemplary gamma voltage output circuit (2) for a liquid crystal display includes a plurality of operational amplifiers (221) and a plurality of resistors (Rn1˜Rn2). Each of the operational amplifiers includes a high voltage input port, a low voltage input port, a non-inverting input port, an inverting input port, and an output port. The high voltage input port of each operational amplifier connects to a same electrical source, and the low voltage input port of each operational amplifier is grounded. The non-inverting input port of each operational amplifier receives a same direct-current voltage, and the output port of each operational amplifier outputs a gamma voltage configured for driving the liquid crystal display and is grounded via two respective of the resistors connected in series. A node between the two respective resistors connects to the inverting input port of the operational amplifier.

REFERENCES:
patent: 6211866 (2001-04-01), Okutani
patent: 6836232 (2004-12-01), Bu
patent: 7388592 (2008-06-01), Chuang et al.
patent: 2001/0004255 (2001-06-01), Nishimura
patent: 2007/0040855 (2007-02-01), Kato

Affiliated with

Also associated with

Rating

Gamma voltage output circuit having the same DC current... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gamma voltage output circuit having the same DC current..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gamma voltage output circuit having the same DC current... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2713341