Liquid crystal display having a bus line formed of two metal layers and method of manufacturing the same
First Claim
1. A liquid crystal display device comprising:
- a substrate;
a gate bus line;
a source bus line;
a thin film transistor having a gate electrode, a gate insulating layer, a source electrode and a drain electrode, wherein the gate electrode is connected with the gate bus line, and the source electrode is connected with the source bus line;
a protection layer on the thin film transistor;
a pixel electrode, wherein the drain electrode of the thin film transistor is connected with the pixel electrode;
a storage capacitor adjacent the thin film transistor, the storage capacitor including a storage capacitor electrode between the gate insulating layer and the protection layer;
a gate pad at an end of the gate bus line; and
a source pad at an end of the source bus line;
whereinthe gate bus line includes a first metal layer and a second metal layer, the second metal layer covering the first metal layer,the gate pad is connected with a first conductive layer through a gate pad contact hole formed on the gate pad through a gate insulating layer and the protection layer, the source pad is connected with a second conductive layer through a source pad contact hole formed on the gate insulating layer through the protection layer.
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Accused Products
Abstract
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.
43 Citations
9 Claims
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1. A liquid crystal display device comprising:
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a substrate; a gate bus line; a source bus line; a thin film transistor having a gate electrode, a gate insulating layer, a source electrode and a drain electrode, wherein the gate electrode is connected with the gate bus line, and the source electrode is connected with the source bus line; a protection layer on the thin film transistor; a pixel electrode, wherein the drain electrode of the thin film transistor is connected with the pixel electrode; a storage capacitor adjacent the thin film transistor, the storage capacitor including a storage capacitor electrode between the gate insulating layer and the protection layer; a gate pad at an end of the gate bus line; and a source pad at an end of the source bus line;
whereinthe gate bus line includes a first metal layer and a second metal layer, the second metal layer covering the first metal layer, the gate pad is connected with a first conductive layer through a gate pad contact hole formed on the gate pad through a gate insulating layer and the protection layer, the source pad is connected with a second conductive layer through a source pad contact hole formed on the gate insulating layer through the protection layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification