Patent ID: 7889285
Filing Date: 2011-02-15
Classification: G02F,H01L

Abstract:
1. A liquid crystal display device having an etch-stop type insulating gate-type transistor, which has a protective insulating layer on a channel thereof, the liquid crystal display device comprising: 1) a first insulating substrate in which unit pixels are arranged in a 2-dimensional matrix on a principal plane, wherein the first insulating substrate comprises: a) the insulating gate-type transistor, b) a scan line doubling as a gate electrode and signal line doubling as a source wire of the insulating gate-type transistor, c) a pixel electrode connected to a drain of the insulating gate-type transistor, d) a counter electrode formed at a specified distance from the pixel electrode; 2) a second insulating substrate or a color filter that faces the first insulating substrate; and 3) liquid crystal filled between the first insulating substrate and the second insulating substrate or a color filter; wherein at least the signal line is insulated with an insulating layer; wherein an opening that self aligns with the protective insulating layer is defined on the scan line outside an image display area, at least in a gate insulating layer and, such that part of the scan line is exposed in the opening, and wherein the scan line exposed in the opening is a single-layered transparent conductive layer.