Source driving circuit for preventing gamma coupling

Details Source driving circuit for preventing gamma coupling Source driving circuit for preventing gamma coupling

Filed on

2008-09-02

Date issued

2010-02-16

Examiner

Le, Dinh T. (Department: 2816)

Patent Class

Miscellaneous active electrical nonlinear devices, circuits, and

SubClass

Signal converting, shaping, or generating

SubSubClass

Amplitude control

Other Related Categories

C326S062000, C326S081000

Type

Reexamination Certificate

Status

active

Patent number

07663422

Description

ABSTRACT:
During transition, level shifters in a source driver output logic high signals to PMOS DACs and output logic low signals to NMOS DACs for shutting down current paths in the PMOS DACs and in the NMOS DACs. Therefore, during transition, the PMOS DACs and the NMOS DACs are at high-impedance stage for preventing gamma coupling effect.

REFERENCES:
patent: 6373459 (2002-04-01), Jeong
patent: 7265697 (2007-09-01), Tsai et al.
patent: 7298196 (2007-11-01), Teraishi
patent: 7436219 (2008-10-01), Chen et al.

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