Shift register circuit

Details Shift register circuit Shift register circuit

2009-10-27

2011-10-18

Lam, Tuan T (Department: 2816)

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

Shift register

C377S068000, C377S078000, C377S079000

Reexamination Certificate

active

08040999

ABSTRACT:
A shift register circuit is provided that can suppress a decrease in a drive capability when a frequency of a clock signal increases. A unit shift register includes a first transistor for supplying a clock signal to an output terminal, a pull-up driving circuit for driving the first transistor, a second transistor for discharging the output terminal, and a pull-down driving circuit for driving the second transistor. In the pull-up driving circuit, the gate of a third transistor charging the gate of the first transistor is charged in accordance with activation of an output signal of preceding stage, and the potential at the gate of the third transistor is increased with a capacitive element. As a result, the third transistor operates in the non-saturated region.

REFERENCES:
patent: 3480796 (1969-11-01), Polkinghorn et al.
patent: 3506851 (1970-04-01), Polkinghorn et al.
patent: 3564290 (1971-02-01), Sonoda
patent: 3710271 (1973-01-01), Putnam
patent: 3774055 (1973-11-01), Bapat
patent: 3898479 (1975-08-01), Proebsting
patent: 3937983 (1976-02-01), Reed
patent: 4061933 (1977-12-01), Schroeder et al.
patent: 4122361 (1978-10-01), Clemen et al.
patent: 4239990 (1980-12-01), Hong et al.
patent: 4239991 (1980-12-01), Hong et al.
patent: 4276487 (1981-06-01), Arzubi et al.
patent: 4379974 (1983-04-01), Plachno
patent: 4443714 (1984-04-01), Nakano et al.
patent: 4447745 (1984-05-01), Takemae et al.
patent: 4633105 (1986-12-01), Tsujimoto
patent: 5859630 (1999-01-01), Huq
patent: 6064713 (2000-05-01), Lebrun et al.
patent: 7116748 (2006-10-01), Nagao et al.
patent: 7372300 (2008-05-01), Tobita
patent: 7436923 (2008-10-01), Tobita
patent: 7443944 (2008-10-01), Tobita et al.
patent: 7492853 (2009-02-01), Tobita
patent: 7627076 (2009-12-01), Tobita
patent: 7672419 (2010-03-01), Chen
patent: 2003/0231735 (2003-12-01), Moon et al.
patent: 2007/0195053 (2007-08-01), Tobita et al.
patent: 2007/0195920 (2007-08-01), Tobita
patent: 2008/0101529 (2008-05-01), Tobita
patent: 2004-78172 (2004-03-01), None
patent: WO 2006/013542 (2006-02-01), None
patent: WO 2006/013542 (2006-02-01), None
patent: WO 2006/100636 (2006-09-01), None
patent: WO 2006/100636 (2006-09-01), None
patent: WO 2006/100637 (2006-09-01), None
patent: WO 2006/100637 (2006-09-01), None
patent: WO 2007/013010 (2007-02-01), None
patent: WO 2007/013010 (2007-02-01), None
U.S. Appl. No. 12/647,108, filed Dec. 24, 2009, Tobita.
U.S. Appl. No. 12/705,235, filed Feb. 12, 2010, Tobita.
U.S. Appl. No. 13/082,128, filed Apr. 7, 2011, Tobita.

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