Data driver circuit and associated method for use with scanned L

Details Data driver circuit and associated method for use with scanned L Data driver circuit and associated method for use with scanned L

1993-01-05

1996-04-23

Hjerpe, Richard

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345208, 345 94, G09G 336

Patent

active

055108075

ABSTRACT:
A data driver circuit and system driving scheme that can be integrated directly onto an LCD display substrate to reduce the cost of the peripheral integrated circuits and the hybrid assembly needed by unscanned active matrix liquid crystal displays to connect them to the array. A demultiplexer circuit is deposited on the display for demultiplexing a group of Y columns of multiplexed video data input signals to X groups of Y pixel capacitors that are also deposited on the substrate in Z rows. In addition, a data driver circuit provides voltage signals to precharge the pixel capacitors to a first voltage level in a first time period such that video data input signals coupled thereto in a multiplexed fashion during a second time period causes the pixel capacitors to store to a second predetermined voltage level to provide a video display as the rows of pixels are sequentially scanned.

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