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Liquid crystal display device of thin film transistor

A technology of thin-film transistors and liquid crystal displays, applied in instruments, nonlinear optics, optics, etc., can solve problems such as sliding, light leakage, and misalignment, and achieve the effects of maintaining stability, enhancing flexibility, and wide density margin

Active Publication Date: 2008-11-12
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Figure 6a It is a cross-sectional view of a columnar spacer formed on a grid line after forming a cell (Cell). After forming a black matrix 17 and a color filter 18 on a color filter substrate, the bottom of the black matrix 17 corresponds to the grid line. The position of the columnar spacer 22 is formed. It can be seen from the figure that the columnar spacer 22 is supported on the insulating layer above the grid line, thereby maintaining the stability of the box thickness. However, when the pressure is applied, the columnar spacer 22 will produce Sliding causes misalignment between the black matrix 17 and the grid lines below, resulting in light leakage, that is, white mura; Figure 6b It is a cross-sectional view of a columnar spacer formed on a thin film transistor after forming a cell (Cell). After forming a black matrix 17 and a color filter 18 on a color filter substrate, the area below the black matrix 17 corresponding to the TFT The position forms a columnar spacer 22. It can be seen from the figure that the columnar spacer 22 is supported above the TFT, thereby maintaining the stability of the box thickness. However, when the pressure is applied, the columnar spacer 22 will slide, causing the black matrix 17 Misalignment with the grid line below, resulting in light leakage, that is, white Mura

Method used

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  • Liquid crystal display device of thin film transistor
  • Liquid crystal display device of thin film transistor
  • Liquid crystal display device of thin film transistor

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Figure 7 Shown is a schematic diagram of a pixel structure of a thin film transistor array substrate according to a specific embodiment of the present invention. Such as Figure 7 As shown, the array substrate pixel structure includes: an insulating substrate; a gate line 1 and a gate electrode 8 formed on the insulating substrate; a gate insulating layer (not shown) formed on the gate electrode 8; The silicon island 10 of the insulating layer, and part of the silicon island forms an active layer track along the gate line; the drain electrode 11 and the source electrode 12 formed above the silicon island 10; the data line 13 is integrated with the source electrode 12 of the source and drain electrodes structure; form the passivation layer on the source and drain electrodes, and cover the entire substrate (not shown in the figure); form the passivation layer via hole 5 on the drain electrode 11; the pixel electrode 15 is connected to the leakage through the passivation...

Embodiment 2

[0056] According to the content described in Embodiment 1 and the existing process conditions, the designs of the thin film transistor array substrate and the color filter substrate are respectively completed and assembled into a box. The difference is reflected in the position of the main spacer, the relative position of the assembled columnar spacer and the thin film transistor as shown in Figure 13 shown. The main spacers are not arranged in a staggered manner. The main spacers of adjacent pixels are all close to the sides of the thin film transistors. After assembly, the white mura of the product is significantly improved.

Embodiment 3

[0058] According to the process described in Embodiment 1 under the existing process conditions, the designs of the thin film transistor array substrate and the color filter substrate are respectively completed and assembled into a box. The difference reflected is the position of the main spacer, the relative position of the assembled spacer and the side of the TFT as shown in Figure 14 shown. The main spacers are not arranged in a staggered manner. The main spacers of adjacent pixels are all close to the overlapped portion of the gate line and the data line. After assembly, the white mura of the product is significantly improved.

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Abstract

A liquid crystal display of film transistor type consists of color filtering baseplate, film transistor array baseplate being opposite-set to color filtering baseplate and liquid crystal layer being packaged between two said base plates. It is featured as forming said color filtering baseplate by a top surface plate, color film on said top surface plate, block matrix and cylindrical isolation pad; forming film transistor array base plate by bottom surface plate, a set of gate line and data line both being formed on said bottom surface plate.

Description

technical field [0001] The present invention relates to a thin film transistor liquid crystal display (TFT LCD), in particular to a thin film transistor liquid crystal display which improves the phenomenon of white Mura (inhomogeneous white picture quality). Background technique [0002] In recent years, with the popularization of digital TV, the traditional CRT display has tended to be replaced by a new generation of display technology due to its difficulty in digitization, large size, heavy weight, and radiation. The representative new display technology is PDP, OLED, LCD, etc. Among them, due to the advantages of light weight, thin volume, no radiation, low power consumption, and high display resolution, LCD has begun to be widely used and has become a mainstream product. [0003] But the existing liquid crystal display (LCD) technology still needs to be improved. In order to control the thickness of the box, ball spacers (Ball Spacers) or columnar spacers (Post Spacers...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1362G02F1/1339
Inventor 张毅李钊韩海滨
Owner BOE TECH GRP CO LTD