Apparatus and method for driving signal electrodes for liquid crystal display devices
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United States of America Patent
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-
Aug 22, 1989
Issued Date -
N/A
app pub date -
Jun 14, 1988
filing date -
Sep 27, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A signal electrode drive circuit for driving a liquid crystal display panel includes a latch circuit for latching a digitized video signal, a buffer, a graduation signal-forming circuit, an intensity modulation pulse-generating circuit, and an analog multiplexer. The latch circuit holds the video data only once during one horizontal scanning period until a next latch pulse M is generated, thus considerably reducing current dissipation.
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