Array substrate for liquid crystal display and manufacturing method thereof
First Claim
1. An array substrate for a liquid crystal display (LCD), comprising:
- a substrate, comprising;
a gate electrode;
a pixel electrode configured to receive a data signal; and
a common electrode configured to receive a common voltage, the gate electrode, the pixel electrode, and the common electrode being disposed on a pixel area defined on the substrate;
a gate pad on a gate pad area of the substrate, such that the gate pad is disposed in a same layer as the gate electrode, the gate pad being connected to the gate electrode;
a gate insulating layer covering the gate pad and the gate electrode;
a first protective layer on the gate insulating layer;
a second protective layer on the first protective layer;
a first metal layer on the second protective layer corresponding to the gate pad area, and connected to the gate pad through a first contact hole which exposes the gate pad;
a third protective layer covering the common electrode, the first metal layer, and the second protective layer; and
a second metal layer on the third protective layer corresponding to the gate pad area, and connected to the first metal layer through a second contact hole which exposes the first metal layer,wherein the common electrode is disposed;
on the second protective layer,on a same plane as the first metal layer, andwherein the pixel electrode is disposed;
on the third protective layer, andon a same plane as the second metal layer.
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Abstract
An array substrate for a liquid crystal display (LCD) and manufacturing method thereof are provided. The array substrate for a liquid crystal display (LCD) includes: a substrate, including: a gate electrode, a pixel electrode, and a common electrode, a gate pad formed on the substrate, and connected to the gate electrode, a gate insulating layer formed on the gate pad, a first protective layer formed on the gate insulating layer, a second protective layer formed on the first protective layer, a first metal layer formed on the second protective layer, and connected to the gate pad through a first contact hole which exposes the gate pad, a third protective layer formed on the first metal layer and the second protective layer, and a second metal layer formed on the third protective layer, and connected to the first metal layer through a second contact hole which exposes the first metal layer.
8 Citations
18 Claims
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1. An array substrate for a liquid crystal display (LCD), comprising:
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a substrate, comprising; a gate electrode; a pixel electrode configured to receive a data signal; and a common electrode configured to receive a common voltage, the gate electrode, the pixel electrode, and the common electrode being disposed on a pixel area defined on the substrate; a gate pad on a gate pad area of the substrate, such that the gate pad is disposed in a same layer as the gate electrode, the gate pad being connected to the gate electrode; a gate insulating layer covering the gate pad and the gate electrode; a first protective layer on the gate insulating layer; a second protective layer on the first protective layer; a first metal layer on the second protective layer corresponding to the gate pad area, and connected to the gate pad through a first contact hole which exposes the gate pad; a third protective layer covering the common electrode, the first metal layer, and the second protective layer; and a second metal layer on the third protective layer corresponding to the gate pad area, and connected to the first metal layer through a second contact hole which exposes the first metal layer, wherein the common electrode is disposed; on the second protective layer, on a same plane as the first metal layer, and wherein the pixel electrode is disposed; on the third protective layer, and on a same plane as the second metal layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An array substrate for a liquid crystal display (LCD), comprising:
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a substrate; a pixel area on the substrate, the pixel area comprising; a transistor, comprising; a gate electrode; a source electrode; a drain electrode; an active layer; and a gate insulating layer; a first protective layer on the transistor; a second protective layer on the first protective layer; a common electrode on the second protective layer; a third protective layer completely covering the common electrode and the second protective layer; and a pixel electrode connected to the drain electrode through a first contact hole that exposes the drain electrode; and a gate pad area on the substrate, the gate pad area comprising; a gate pad disposed in a same layer as the gate electrode; the gate insulating layer; the first protective layer; the second protective layer; a first metal layer; the third protective layer; and a second metal layer, wherein the first metal layer is disposed on the second protective layer, and is connected to the gate pad through a second contact hole that exposes the gate pad, wherein the first metal layer comprises a same material and is disposed in a same layer as the common electrode, wherein the third protective layer is disposed on the first metal layer and the second protective layer, wherein the second metal layer is disposed on the third protective layer, and is connected to the first metal layer through the second contact hole that exposes the first metal layer, wherein the second metal layer is electrically connected to the gate pad, and wherein the pixel electrode comprises a same material as the second metal layer, and wherein the pixel electrode is disposed; on the third protective layer, and in a same layer as the second metal layer. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification