Semiconductor device

Details Semiconductor device Semiconductor device

2005-04-29

2008-09-23

Tra, Quan (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Particular stable state circuit

C327S211000

Reexamination Certificate

active

07427884

ABSTRACT:
A shift register capable of supplying only a necessary clock signal to a necessary unit register with simple constitution. A semiconductor device is provided with a shift register in which a plurality of stages of unit registers is connected, in which the unit register comprises a flip-flop circuit, a first switch and a second switch, a first clock signal line is electrically connected to the flip-flop circuit through the first switch, a second clock signal line is electrically connected to the flip-flop circuit through the second switch, the first switch is controlled to be on/off by an output signal from the flip-flop circuit, and the second switch is controlled to be on/off by an input signal to the flip-flop circuit.

REFERENCES:
patent: 5377248 (1994-12-01), Brooks
patent: 5781171 (1998-07-01), Kihara et al.
patent: 6996203 (2006-02-01), Onda et al.
patent: 2003/0234761 (2003-12-01), Washio et al.
patent: 2004/0108989 (2004-06-01), Gyouten et al.
patent: 2001-075543 (2001-03-01), None

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