TFT LCD device having multi-layered pixel electrodes

Details TFT LCD device having multi-layered pixel electrodes TFT LCD device having multi-layered pixel electrodes

2006-05-11

2010-11-16

Sefer, A. (Department: 2893)

Liquid crystal cells, elements and systems

Particular excitation of liquid crystal

Electrical excitation of liquid crystal

C349S147000, C257S072000, C257S059000, C257SE27155, C257SE29278, C257SE29282

Reissue Patent

active

RE041927

ABSTRACT:
In a TFT LCD device comprising a substrate, at least one thin film transistor formed on the substrate, having a source electrode and a drain electrode, an insulating layer formed over the whole surface of the substrate on which the thin film transistor is formed, having at least one contact hole exposing a portion of the drain electrode, and reflective layer pixel electrode corresponding to the thin film transistor, formed on the insulating layer to be connected with the drain electrode through the contact hole, the pixel electrode is formed of a multi-layered conductive layer. The drain electrode is composed of multiple layers, and the most upper layer of the multiple layers is one selected from a Cr layer and a MoW layer. Preferably, the multi-layered conductive layer is composed of two-layered conductive layer having a lower layer of the same material as that of the most upper layer and an upper layer of Al-containing metal.

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