A liquid crystal display device has good contact characteristics between an etched side end portion of a lower layer wiring line and an insulating film and the like, satisfactory step coverage, and satisfactory adhesion to a substrate so that disconnection of an upper layer wiring line and short-circuiting...http://www.google.com.au/patents/US6392721?utm_source=gb-gplus-sharePatent US6392721 - Liquid crystal display device having wiring line including first and second layers with second layer having a thickness not greater than 1/2 of a thickness of first layer
