Patent ID: 7321404

Claim:
A liquid crystal display device, with at least the following characteristics in a liquid crystal display device that is filled with liquid crystals between 1) a primary transparent insulating substrate that aligns, in a 2-dimensional matrix, unit pixels that have on a principal plane at least a) an insulating gate type transistor, b) scanning lines that also work as gate electrodes and signal lines that also work as source wires for the said insulated gate type transistor, and c) pixel electrodes that are connected to drain wires and 2) a secondary transparent insulating substrate or color filter that faces said primary transparent insulating substrate, comprising: I) a laminate of a transparent conductive layer and a primary metal layer as gate electrodes, scanning lines, and conductive pixel electrodes on the principal plane of a primary transparent insulating substrate; II) an island-like channel layer through a gate insulating layer above the gate electrodes; III) a protective insulating layer narrower than the gate electrodes on the said channel layer; IV) a plurality of openings self aligned with said island-like channel layer, in the gate insulating layer on said pixel electrodes within each opening; V) a pair of semiconductor layers as the source-drain of the insulating gate type transistor, on parts of said protective insulating layer and on the channel layer; VI) a plurality of source wires and drain wires consisting of one or more secondary metal layers and a heat resistant metal layer on said semiconductor layers, gate insulating layer and parts of the pixel electrodes within said openings; and VI) a passivation insulating layer on said source/drain wires.