Shift register and level controller

Details Shift register and level controller Shift register and level controller

2010-02-25

2010-10-12

Lam, Tuan (Department: 2816)

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

Shift register

C377S068000, C377S069000

Reexamination Certificate

active

07813467

ABSTRACT:
A shift register includes several stages of shift register units. Each shift register unit includes a first level lifting unit, first level lowering unit, first driving unit and level controller. The first level lifting unit and first level lowering unit control the scan signal to be equal to a first timing signal and first voltage, respectively. The level controller includes an input unit, a charge storage unit, a second level lifting unit and a second level lowering unit. The input unit controls the third control signal to be equal to the first voltage at a node. The charge storage unit stores a voltage of the timing signal at the node. The second level lifting unit and second level lowering unit respectively control the second control signal to be equal to the third control signal and the first voltage to turn on and turn off the first level lowering unit.

REFERENCES:
patent: 6970530 (2005-11-01), Wang et al.
patent: 7436923 (2008-10-01), Tobita
patent: 7532701 (2009-05-01), Moon
patent: 2006/0001637 (2006-01-01), Pak et al.
patent: 2006/0291610 (2006-12-01), Lo et al.
patent: 2008/0101529 (2008-05-01), Tobita
patent: 2010/0111245 (2010-05-01), Tobita

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