Array substrate for liquid crystal display device and method of fabricating the same
AssigneeLG Display Co., Ltd.
InventorsJi-Hyun Jung, Dong-Young Kim
Life of this patent
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Abstract
An array substrate for a liquid crystal display device comprises a substrate having a pixel region, a gate line on the substrate, and a data line crossing the gate line to define the pixel region. A thin film transistor (TFT) includes a gate electrode connected to the gate line, an insulating layer on the gate electrode, an active layer on the insulating layer, an ohmic contact layer on the active layer, a source electrode connected to the data line and a drain electrode spaced apart from the source electrode. A pixel electrode connects to the drain electrode and is disposed in the pixel region. An opaque metal pattern is provided on end portions of the pixel electrode.
Claims11
A method of fabricating an array substrate for a liquid crystal display device, comprising:
- forming a gate electrode on a substrate having a pixel region and a gate line connected to the gate electrode;
- forming an insulating layer on the gate electrode and the gate line, an active layer and an ohmic contact pattern on the insulating layer and corresponding to the gate electrode;
- forming source and drain electrodes on the ohmic contact pattern, the source electrode comprising a first source layer of a transparent conductive metallic material and a second source layer of an opaque conductive metallic material, the drain electrode comprising a first drain layer of the transparent conductive metallic material and a second drain layer of the opaque conductive metallic material;
- forming a pixel region from a data line connected to the source electrode and that crosses the gate line, wherein the pixel region is connected to the drain electrode and comprises a first pixel layer of the transparent conductive metallic material and a second pixel layer of the opaque conductive metallic material;
- and
- partially removing the second pixel layer to form a pixel electrode of the first pixel layer and an opaque metal pattern of the second pixel layer on end portions of the pixel electrode.
A method of fabricating an array substrate for a liquid crystal display device, comprising:
- forming a gate electrode on a substrate having a pixel region and a gate line connected to the gate electrode;
- forming an insulating layer on the gate electrode and the gate line;
- forming an active layer and an ohmic contact pattern on the insulating layer and corresponding to the gate electrode;
- forming source and drain electrodes on the ohmic contact pattern, the source electrode comprising a first source layer of a transparent conductive metallic material and a second source layer of an opaque conductive metallic material, the drain electrode comprising a first drain layer of the transparent conductive metallic material and a second drain layer of the opaque conductive metallic material;
- forming a pixel region from a data line connected to the source electrode and that crosses the gate line, wherein the pixel region is connected to the drain electrode and comprises a first pixel layer of the transparent conductive metallic material and a second pixel layer of the opaque conductive metallic material;
- forming a pixel electrode of the first pixel layer;
- and
- forming an opaque metal pattern of the second pixel layer on end portions of the pixel electrode.
Dependencies are inferred from the claim text.