Liquid crystal display device having a double layered structure and a single layered structure on the same layer
First Claim
1. A liquid crystal display device, comprising:
- a gate line having a double layered structure including a transparent first conductive layer and an opaque second conductive layer on the transparent first conductive layer;
a data line crossing the gate line to define a pixel area;
a thin film transistor connected to the gate line and the data line;
a common line having first and second conductive layers and substantially parallel to the gate line, wherein the common line is formed in the same layers as the gate line;
a common electrode extended from the first conductive layer as a lower layer of the common line in the pixel area, wherein the common electrode is formed of the first conductive layer as the same layer as the first conductive layer of the common line; and
a pixel electrode connected to the thin film transistor to form a horizontal electric field with the common electrode in the pixel area,wherein a width of the lower first conductive layer in each of the gate line and the common line is wider than a width of the upper second conductive layer, andwherein the gate line, the common line and the common electrode are formed on the same layer.
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Accused Products
Abstract
A horizontal electric field applying type thin film transistor substrate of a LCD device having an increased aperture ratio as well as a simplified manufacturing process. The device includes a gate line having a double layered structure including a transparent first conductive layer and an opaque second conductive layer, a data line crossing the gate line to define a pixel area; a thin film transistor connected to the gate line and the data line; a common line having first and second conductive layers and substantially parallel to the gate line; a common electrode extended from the first conductive layer of the common line in the pixel area; and a pixel electrode connected to the thin film transistor to form a horizontal electric field with the common electrode in the pixel area.
19 Citations
18 Claims
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1. A liquid crystal display device, comprising:
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a gate line having a double layered structure including a transparent first conductive layer and an opaque second conductive layer on the transparent first conductive layer; a data line crossing the gate line to define a pixel area; a thin film transistor connected to the gate line and the data line; a common line having first and second conductive layers and substantially parallel to the gate line, wherein the common line is formed in the same layers as the gate line; a common electrode extended from the first conductive layer as a lower layer of the common line in the pixel area, wherein the common electrode is formed of the first conductive layer as the same layer as the first conductive layer of the common line; and a pixel electrode connected to the thin film transistor to form a horizontal electric field with the common electrode in the pixel area, wherein a width of the lower first conductive layer in each of the gate line and the common line is wider than a width of the upper second conductive layer, and wherein the gate line, the common line and the common electrode are formed on the same layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification
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- Resources
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Current AssigneeLG Display Co., Ltd.
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Original AssigneeLG Display Co., Ltd.
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InventorsAhn, Byung Chul
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Primary Examiner(s)Louie; Wai-Sing
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Assistant Examiner(s)Jahan; Bilkis
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Application NumberUS11/984,990Publication NumberTime in Patent Office1,128 DaysField of Search257/72, 257/59US Class Current257/59CPC Class CodesH01L 27/124 with a particular compositi...H01L 27/1255 integrated with passive dev...H01L 27/1288 employing particular maskin...
