Patent ID: RE41927

Claim:
A thin film transistor liquid crystal device (TFT LCD), comprising: a substrate; a thin film transistor TFT formed on said substrate and having a source electrode and a drain electrode, wherein the drain electrode is formed of multiple layers comprising an uppermost layer formed of Cr or MoW; an insulating layer formed over said thin film transistor TFT formed of a photosensitive insulating material and having a contact hole exposing a portion of the drain electrode; and a pixel electrode formed on said insulating layer, and connected to the drain electrode through the contact hole, wherein the pixel electrode is formed of multiple layers comprising a lower layer formed of the same material as the uppermost layer of the drain electrode and an upper layer formed of metal containing Al , wherein the pixel electrode further comprises a intermediate layer formed between the lower layer and the upper layer and formed of a material having an electro - negativity ranging between that of the lower layer and that of the upper layer .