Sample and hold circuit for drivers of an active matrix display

Details Sample and hold circuit for drivers of an active matrix display Sample and hold circuit for drivers of an active matrix display

1996-10-17

1999-05-11

Lao, Lun-Yi

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 99, 345103, 345204, G09G3/36

Patent

active

059032502

ABSTRACT:
The number of external column driver chip can be reduced to one in an active matrix liquid crystal display with column input multiplexing driving scheme. At least two sample and hold circuits are used for each column with alternate sampling and holding periods. Video signals are sampled and held at least twice during one line scanning time. These sample and hold circuits are all integrated in the driver chip.

REFERENCES:
patent: Re33882 (1992-04-01), Morogumi
patent: 4825203 (1989-04-01), Takeda et al.
patent: 4908609 (1990-03-01), Stroomer
patent: 5412397 (1995-05-01), Kanatani et al.
patent: 5657040 (1997-08-01), Kanbara

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