Apparatus for increasing the effective yield of displays with integregated row select driver circuit

摘要

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.