Shift register with a transistor operating in a low duty cycle

Details Shift register with a transistor operating in a low duty cycle Shift register with a transistor operating in a low duty cycle

1995-03-06

1996-05-14

Heyman, John S.

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

Shift register

Particular transfer means

377 76, 377105, 377 79, 327212, G11C 1900

Patent

active

055175422

ABSTRACT:
A shift register for scanning a liquid crystal display includes cascaded stages. A given stage is formed with an input transistor switch that is responsive to an output pulse of a stage upstream in the chain of the cascaded stages. An output pulse of the given stage is produced in a pull-up transistor of a push-pull amplifier. A third transistor responsive to an output signal of a stage downstream of the given stage applies a control signal to a gate electrode of the pull-down transistor to render the pull-down transistor conductive.

REFERENCES:
patent: 3835302 (1974-09-01), Au
patent: 4741005 (1988-04-01), Tanigawa
patent: 5055709 (1991-10-01), Smith
patent: 5055720 (1991-10-01), Tiede
patent: 5136622 (1992-08-01), Plus
patent: 5170155 (1992-12-01), Plus et al.
patent: 5222082 (1993-06-01), Plus
patent: 5410583 (1995-04-01), Weisbrod et al.

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