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Reflection type liquid crystal display device and method of manufacturing the same

a liquid crystal display and reflection type technology, applied in the direction of organic semiconductor devices, non-linear optics, instruments, etc., can solve the problems of high power dissipation, large volume, heavy weight,

Inactive Publication Date: 2007-08-30
LEE JEONG HO +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This configuration prevents battery effects and corrosion, maintaining the integrity of the pad electrodes and metal layers, thereby enhancing the reliability and manufacturing process of reflection type liquid crystal display devices.

Problems solved by technology

The CRT, however, has some disadvantages such as a heavy weight, a large volume and high power dissipation.
Thus, during a subsequent chip on glass (COG) bonding process by which integrated circuits are directly mounted on the substrate of the LCD panel, COG (chip on glass) block defects may be caused due to aluminum corrosion.

Method used

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  • Reflection type liquid crystal display device and method of manufacturing the same
  • Reflection type liquid crystal display device and method of manufacturing the same
  • Reflection type liquid crystal display device and method of manufacturing the same

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Embodiment Construction

[0043] Hereinafter, a reflection type liquid crystal display device and a method of manufacturing the reflection type liquid crystal display device according to the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0044]FIG. 3 is a plan view showing a reflection type liquid crystal display device according to the present invention. FIGS. 4A and 4B are cross-sectional views of the reflection type liquid crystal display device, taken along lines E-E′ and F-F′ in FIG. 3, respectively. The reflection type liquid crystal display device includes an amorphous silicon thin film transistor having a bottom-gate structure. Here, a reference symbol P shows a pad region; a reference symbol D indicated a display region; and a reference symbol B shows a boundary region located between the pad region and the display region. Here, the pad region P is formed outside the display region D so as to surround the display region D.

[004...

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PUM

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Abstract

Disclosed are a reflection type LCD and method of manufacturing the same. A wiring layer having a first and second metal layer (102, 104) is formed on a substrate (100) including a display region (D) and a pad region (P). Upon the substrate (100) and the wiring layer is formed a first passivation layer (155), and contacts with a wiring terminal (115) and the first metal layer (102). A second passivation layer (180) is formed on the substrate except the pad region (P). The pad contact hole (160) extends to a position under the second passivation layer (180). The second passivation layer (180) covers a region in the pad contact hold (160) where the step coverage of the pad electrode (170) is poor, thereby preventing a battery effect.

Description

TECHNICAL FIELD [0001] The present invention relates to a liquid crystal display device and a method of manufacturing the same, and more particularly to a reflection type liquid crystal display device and a method of manufacturing the same in which a battery effect can be prevented when a pad electrode consisting of a transparent conductive layer is used. BACKGROUND ART [0002] In the information society of these days, electronic display devices are more important as information transmission media and various electronic display devices are widely applied for industrial apparatus or home appliances. Such electronic display devices are being continuously improved to have new appropriate functions for various demands of the information society. [0003] In general, electronic display devices display and transmit various pieces of information to users who utilize such information. That is, the electronic display devices convert electric information signals outputted from electronic apparat...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G02F1/1335H05B33/04H01L51/50H01L51/52H05B33/10H05B33/12H05B33/14
CPCH01L2251/5315H01L51/5237H10K2102/3026H10K59/874H10K59/872H05B33/04H10K50/846H10K50/841
Inventor LEE, JEONG-HOCHOI, SANG-GUNSONG, YOUNG-GOO
Owner LEE JEONG HO
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