Array substrate for liquid crystal display device and method of fabricating the same
First Claim
1. An array Substrate for a liquid crystal display device, comprising:
- a gate line and a data line crossing each other on a Substrate to define a pixel region;
an insulating layer between the gate line and the data line;
a gate electrode extending from the gate line;
a transistor in the pixel region having an active layer on the insulating layer, an ohmic contact layer on the active layer, a source electrode and a drain electrode on the ohmic contact layer; and
a pixel electrode connected to the transistor,a passivation layer covering the source and drain electrodes and exposing the pixel electrode, wherein the passivation layer has an edge that substantially coincides with an edge of the drain electrode,wherein the active layer is in an island shape over the gate electrode and within a boundary defined by a perimeter of the gate electrode,wherein each of the source and drain electrodes includes a transparent conductive layer and a metallic material layer on the transparent conductive layer,wherein the transparent conductive metallic layer is formed on the insulating layer, and the metallic material layer is formed on the transparent conductive layer, andwherein the pixel electrode extends from and has the same layer as the transparent conductive layer of the drain electrode.
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Accused Products
Abstract
An array substrate for a liquid crystal display device includes a gate line and a data line crossing each other on a substrate to define a pixel region, an insulating layer between the gate line and the data line, a gate electrode extending from the gate line, and a transistor in the pixel region having an active layer on the insulating layer, ohmic contact layers of a first material that are adjacent to ends of the active layer, buffer layers of a second material, which is different from the first material, on the ohmic contact layers, a source electrode contacting one of the buffer layers and a drain electrode contacting another one of the buffer layers, wherein the active layer is in an island shape over the gate electrode and within a boundary defined by a perimeter of the gate electrode.
20 Citations
18 Claims
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1. An array Substrate for a liquid crystal display device, comprising:
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a gate line and a data line crossing each other on a Substrate to define a pixel region; an insulating layer between the gate line and the data line; a gate electrode extending from the gate line; a transistor in the pixel region having an active layer on the insulating layer, an ohmic contact layer on the active layer, a source electrode and a drain electrode on the ohmic contact layer; and a pixel electrode connected to the transistor, a passivation layer covering the source and drain electrodes and exposing the pixel electrode, wherein the passivation layer has an edge that substantially coincides with an edge of the drain electrode, wherein the active layer is in an island shape over the gate electrode and within a boundary defined by a perimeter of the gate electrode, wherein each of the source and drain electrodes includes a transparent conductive layer and a metallic material layer on the transparent conductive layer, wherein the transparent conductive metallic layer is formed on the insulating layer, and the metallic material layer is formed on the transparent conductive layer, and wherein the pixel electrode extends from and has the same layer as the transparent conductive layer of the drain electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 17, 18)
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8. An array substrate for a liquid crystal display device, comprising:
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a gate line and a data line crossing each other on a substrate to define a pixel region; an insulating layer between the gate line and the data line; a transistor in the pixel region having an active layer on the insulating layer and ohmic contact layers of a first material that are adjacent to ends of the active layer; a pixel electrode connected to the transistor; and source and drain electrodes each having a transparent conductive layer and an opaque layer on the transparent conductive layer for connecting to the ohmic contact layers, a passivation layer covering the source and drain electrodes and exposing the pixel electrode, wherein the passivation layer has an edge that substantially coincides with an edge of the drain electrode, wherein the transparent layer is formed on the insulating layer, and the opaque layer is formed on the transparent conductive layer, wherein the active layer is in an island shape over the gate electrode and within a boundary defined by a perimeter of the gate electrode, and wherein the pixel electrode extends from and has the same layer as the transparent conductive layer of the drain electrode. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification