Gate line drivers for active matrix displays

Details Gate line drivers for active matrix displays Gate line drivers for active matrix displays

2007-12-18

2007-12-18

Lam, Tuan T (Department: 2816)

Electrical pulse counters, pulse dividers, or shift registers: c

Shift register

C377S068000, C377S079000

Reexamination Certificate

active

11302853

ABSTRACT:
A shift register in an amorphous-silicon gate driver comprises a pull-up transistor and two pull-down modules. The pull-up transistor produces a positive pulse when the clock signal is high and the gate of the pull-up transistor is also high. The gate of the pull-up transistor is pulled down to a negative voltage level Vss by two pull-down transistors in the pull-down modules. Each pull-down module also has a further pull-down transistor to keep the output terminal at Vss after the output pulse is produced. The two pull-down modules are operated in a cooperative manner so that each pull-down transistor is conducting approximately 50% of the time. The gates of the pull-down transistors are kept at a positive voltage level approximately 50% of the time and at Vss′ approximately 50% of the time with Vss′ being more negative than Vss.

REFERENCES:
patent: 5517542 (1996-05-01), Huq
patent: 5859630 (1999-01-01), Huq
patent: 5949398 (1999-09-01), Kim
patent: 6747627 (2004-06-01), Koyama et al.
patent: 2004/0046729 (2004-03-01), Moon
patent: 2004/0165692 (2004-08-01), Moon et al.

Affiliated with

Also associated with

Rating

Gate line drivers for active matrix displays does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gate line drivers for active matrix displays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gate line drivers for active matrix displays will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3830367