Long Aldridge & Norman LLP
Liquid crystal display having a bus line formed of two metal layers and method of manufacturing the same
 A method for manufacturing a liquid crystal display includes the steps of forming a gate bus line on a substrate by using a first metal, forming a gate electrode, a second gate bus line and a gate pad on the substrate, by using a second metal, forming a gate insulating layer on the substrate including the gate bus line, the gate electrode, the gate pad and the second gate bus line, by using a first insulating material, selectively forming a semiconductor layer and an impure semiconductor layer on the gate insulating layer, forming a source electrode, a drain electrode, a source bus line and a source pad on the substrate including the impure semiconductor layer, by using a third metal, removing a portion of the impure semiconductor layer exposed between the source electrode and the drain electrode by etching, using the source electrode and the drain electrode as masks, forming a protection layer on the substrate including the source electrode and the drain electrode, by using a second insulating material, forming a drain contact hole on the drain electrode, a source pad contact hole on the source pad and a gate pad contact hole on the gate pad, and forming a pixel electrode on the substrate having the protection layer, using a conductive material. 
LG. Philips LCD Co., Ltd.
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Seong Su
Lee