Multiple value voltage output circuit and liquid crystal display

Details Multiple value voltage output circuit and liquid crystal display Multiple value voltage output circuit and liquid crystal display

1996-07-11

1998-05-05

Wong, Peter S.

Electricity: power supply or regulation systems

External or operator controlled

Using a three or more terminal semiconductive device as the...

323351, 326 80, G05F 112

Patent

active

057479798

ABSTRACT:
A multiple value voltage output circuit in which the number of transistors configuring a high breakdown voltage circuit portion can be reduced so that the area for forming the circuit is reduced. In a signal electrode driving circuit 11, an inverted AC-converting signal FRR inputted to switching control circuits 12 and 13 is selectively inputted to transistors 41 to 44 of an output buffer 14, on the basis of a data signal DA, thereby make one of the transistors 41 to 44 conduct so that a voltage corresponding to the turned-ON of the transistors 41 to 44 is outputted through an output terminal 15.

REFERENCES:
patent: 4882534 (1989-11-01), Koshizuka
patent: 5265003 (1993-11-01), Kayser et al.
patent: 5506493 (1996-04-01), Stengel
patent: 5537059 (1996-07-01), Asahina
patent: 5543744 (1996-08-01), Okumura

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