Apparatus for increasing the effective yield of displays with integregated row select driver circuit
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United States of America Patent
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-
Apr 8, 1997
Grant Date -
N/A
app pub date -
Apr 14, 1994
filing date -
Apr 14, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A redundant row select driver circuit system is provided for enhancing manufacturing yield and reducing manufacturing costs in the liquid crystal data displays. In particular, a row select driver circuit is provided with redundant subcircuits that can effectively replace any damaged subcircuit within the row select driver circuit. In addition, there is disclosed a capacitance compensating scheme to adjust the gray scale level in a damaged row select line with a break inside the display area. And finally, an enhanced diagnostic scheme is disclosed for testing of each row select driver subcircuits in a active matrix display having row select driver circuits connected to each end of row select lines.
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