Driving circuit for liquid crystal display device

Details Driving circuit for liquid crystal display device Driving circuit for liquid crystal display device

2011-08-02

2011-08-02

Mengistu, Amare (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S098000

Reexamination Certificate

active

07990351

ABSTRACT:
A driving circuit for Liquid Crystal Display (LCD) device includes a unity-gain operation amplifier (OP amp), three switches, and two capacitors. The unity-gain OP amp buffers and carries a signal voltage on a transmission line. The first switch switches a connection between a noninverting terminal of the unity-gain OP amp and an input line of the signal voltage. One end of the second switch is connected to the input line of the signal voltage. One end of the third switch is connected to the noninverting terminal of the unity-gain OP amp. The first capacitor is connected between the other end of the third switch and the other end of the second switch. The second capacitor is connected between the other end of the first capacitor and the ground voltage terminal.

REFERENCES:
patent: 6724251 (2004-04-01), Ziazadeh et al.
patent: 03-167977 (1991-07-01), None
patent: 05-297830 (1993-11-01), None
patent: 2005-070627 (2005-03-01), None
patent: 2004-0048446 (2004-06-01), None

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