Shift register and liquid crystal display device using the same

Details Shift register and liquid crystal display device using the same Shift register and liquid crystal display device using the same

Filed on

2011-01-18

Date issued

2011-01-18

Examiner

Eisen, Alexander (Department: 2629)

Patent Class

Computer graphics processing and selective visual display system

SubClass

Plural physical display element control system

SubSubClass

Display elements arranged in matrix

Other Related Categories

C345S094000, C345S098000, C345S099000, C345S204000, C345S211000, C345S212000, C345S213000

Type

Reexamination Certificate

Status

active

Patent number

07872628

Description

ABSTRACT:
A shift register and an LCD device to prevent the deterioration of a transistor by controlling a bias stress are disclosed. The shift register includes a plurality of stages for sequential shift signals, wherein each of the plurality of stages is connected with first and second supplying voltage input lines having opposite phases inversed by at least every frame, a start pulse input line, and at least one clock signal input line in which a phase of a first logic state is shifted in sequence, and a clock signal inputted to the clock signal input line is maintained in a second logic state different from the first logic state during a blanking time between frames.

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patent: 2004/0125069 (2004-07-01), Park et al.
patent: 2004/0181723 (2004-09-01), Nakao et al.
patent: 2004/0239608 (2004-12-01), Chung

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