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Array substrate for liquid crystal display device and method of manufacturing the same

Inactive Publication Date: 2015-04-30
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides an array substrate for LCDs and a method of manufacturing it that can reduce production steps and increase efficiency.

Problems solved by technology

Thus, steps of production processes increase, thus production cost increases, and productivity decreases.

Method used

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  • Array substrate for liquid crystal display device and method of manufacturing the same
  • Array substrate for liquid crystal display device and method of manufacturing the same
  • Array substrate for liquid crystal display device and method of manufacturing the same

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Embodiment Construction

[0029]Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. The same reference numbers may be used throughout the drawings to refer to the same or like parts.

[0030]A thin film transistor (TFT) of the present invention may be a polycrystalline type TFT, an amorphous type TFT, or oxide type TFT. For the purpose of explanations, the oxide TFT is described in the embodiment below by way of example.

[0031]FIG. 2 is a cross-sectional view illustrating an array substrate for a liquid crystal display device (LCD) according to an embodiment of the present invention.

[0032]Referring to FIG. 2, in the array substrate for the LCD, a buffer layer 111 is formed on a substrate 110. Alternatively, the buffer layer 111 may be eliminated.

[0033]An active layer 124 as a semiconductor layer is formed on the buffer layer 111 and includes a channel region 124a and source and drain regions 124b and 124c at both sides, and a first insula...

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Abstract

An array substrate for a liquid crystal display device includes a substrate; a semiconductor layer on the substrate; a gate electrode on the semiconductor layer; source and drain electrodes on and in contact with the semiconductor layer; and an oxide layer on the gate electrode, the oxide layer including a plurality of metal atoms, wherein each of the source and drain electrodes includes a pattern of metal substantially made of the plurality of metal atoms.

Description

[0001]This application claims the benefit of Korean Patent Application No. 10-2013-0131396, filed on Oct. 31, 2013, which is hereby incorporated by reference for all purposes as if fully set forth herein.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present disclosure relates to an array substrate for a liquid crystal display device (LCD), and more particularly, to an array substrate for an LCD including a coplanar type thin film transistor (TFT) and a method of manufacturing the same.[0004]2. Discussion of the Related Art[0005]With the advancement of information society, demand for display device in various forms has increased. Recently, various flat panel display devices, such as a liquid crystal display device (LCD), a plasma display panel (PDP), and an organic light emitting diode display (OLED), have been used.[0006]Among these flat panel display devices, the LCD has advantages of low power consumption due to low driving voltage and portability, and thus i...

Claims

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Application Information

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IPC IPC(8): H01L27/12H01L29/417H01L21/477H01L21/465H01L21/4763H01L29/45H01L21/441
CPCH01L27/1225H01L27/1259H01L29/45H01L29/41733H01L21/477H01L21/441H01L21/465H01L21/47635H01L27/1288H01L21/02244H01L21/02252H01L21/02255H01L21/0273H01L21/32139H01L29/66969H01L29/78618H01L29/7869G02F1/1368H01L29/66757H01L29/78606H01L21/44
Inventor BEAK, JUNG-SUNBANG, JUNG-HO
Owner LG DISPLAY CO LTD