Method of driving a shift register, a shift register, a...

Details Method of driving a shift register, a shift register, a... Method of driving a shift register, a shift register, a...

2005-01-18

2005-01-18

Wambach, Margaret R. (Department: 2816)

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

Shift register

Particular transfer means

C377S079000, C377S068000, C345S099000, C345S100000

Reexamination Certificate

active

06845140

ABSTRACT:
In a shift register and LCD device having the shift register that may be employed in the liquid crystal display device having a large screen size and a large resolution, the shift register includes stages cascade-connected with each other and each of the stages have a carry buffer for generating a carry signal. The pull-down transistor of each of the stages of the shift register is divided into a first pull-down transistor and a second pull-down transistor. A power voltage Vona larger than the power voltage Von applied to a clock generator is applied to the shift register. A signal delay due to the RC delay of the gate lines may be minimized, the shift register is independent of the variation of the threshold voltage of the TFTs, and image display quality may not be deteriorated.

REFERENCES:
patent: 6778627 (2004-08-01), Yu

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