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.

Abstract: An LCD display having at least one redundant data driving circuit on a substrate that can be substituted for a defective data driving circuit on the substrate. These redundant subcircuits are exact copies of a column driving subcircuit except that some of the connecting points to the control and driving signal lines are not hardwired. That is, the connecting points are left as potential welding points. If a column driving circuit that is coupled to a particular input data line is damaged, then a redundant data driving subcircuit can be hardwired by welding the corresponding crossing points to compensate the damaged circuit. The damaged circuit is also disconnected (by using a laser cut or compatible methods) from the corresponding input data line and the internal data line as necessary.

Abstract: Separate circuit sections of active driver circuits located adjacent at least one side of a liquid crystal display have a first encapsulating material covering each of the active driver circuits separately and a second encapsulating material covering all of the active driver circuits and their first encapsulating layer. The active driver circuits may also be sealed between two spaced bands forming an enclosure between the substrates and having an opening in the outer seal to allow a fluid to be inserted in the enclosure formed by the two seal bands to protect the active driver circuits therein. The opening may be sealed with an adhesive.