Display panel driver

Details Display panel driver Display panel driver

2007-01-02

2007-01-02

Tung, Kee M. (Department: 2628)

Computer graphics processing and selective visual display system

Display driving control circuitry

Intensity or color driving control

C345S045000, C345S063000, C345S076000, C345S077000, C345S083000, C345S089000

Reexamination Certificate

active

10647756

ABSTRACT:
A display panel driver has a single resistor string for gamma correction and a signal power supply, which have heretofore been required for each of red, green, and blue, and is small in size and has its power consumption reduced. Voltage generator including a single resistor string having n reference voltage terminals generates n reference voltages. Voltage selector selects and outputs m red gradation voltages Vr(0) through Vr(15), m green gradation voltages Vg(0) through Vg(15), and m blue gradation voltages Vb(0) through Vb(15) from the n reference voltages. The display panel driver provides all of a gamma correction curve for red, gamma correction curve for green, and a gamma correction curve for blue with a single resistor string and a pair of power supplies including a ground potential.

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Japanese Office Action dated Nov. 30, 2004 with partial translation.
Japanese Office Action in patent application JP 2002-245483 dated May 17, 2005, with partial translation.

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