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Liquid crystal display device and manufacturing method thereof

一种液晶显示装置、制造方法的技术，应用在非线性光学、仪器、光学等方向，能够解决不能获得光导电性、残留图像特性下降、电阻值高等问题，达到改善残留图像特性、画质优良的效果

Active Publication Date: 2013-06-05
JAPAN DISPLAY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the liquid crystal display panel, there are wirings, etc., and there is an area where the backlight cannot be illuminated, and the resistance value of this area is still high.
Therefore, since there is a region where photoconductivity cannot be obtained, there arises a problem that the residual image characteristic decreases as a whole.

Method used

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  • Liquid crystal display device and manufacturing method thereof
  • Liquid crystal display device and manufacturing method thereof
  • Liquid crystal display device and manufacturing method thereof

Examples

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Effect test

Embodiment 1）

[0060] figure 1 It is a sectional view showing the structure of Embodiment 1 of the present invention, figure 2 It is a plan view showing Example 1. in the right figure 1 and figure 2 Before proceeding, use the Figure 3 ~ Figure 6 The mechanism by which the afterimage persists for a long time will be described. The residual image includes a so-called DC residual image in which the pattern burns and gradually disappears when the same screen appears, and a so-called AC residual image in which the residual image is generated due to a reduction in the alignment performance of the alignment film. The present invention is a device for countermeasures against so-called DC afterimages.

[0061] image 3 It shows the state in which charges are accumulated on the surface of the alignment film 130 after a predetermined pattern is displayed. exist image 3 In, scanning lines 10 are formed on the TFT substrate 100, and scanning lines 10 are formed on the scanning lines 10 Figu...

Embodiment 2）

[0080] Figure 11 It is a sectional view showing the structure of Embodiment 2 of the present invention in the display area, Figure 12 is its floor plan. exist Figure 6 In the conventional example shown, since the alignment film 113 of the light-shielding portion has no photoconductive effect, the electrical resistance is high, and there is a problem that charges accumulated in the light-shielding portion cannot quickly move to the opening. This embodiment has a feature that the resistance of the alignment film 113 of the light-shielding portion is reduced even if the photoconductive effect is not obtained.

[0081] Figure 11 In Example 2 shown, after the alignment film 113 is formed, the opening 55 is shielded with the photomask 80, and only the shielded portion is irradiated with ultraviolet rays. The TFT substrate 100 on which the alignment film 113 was formed was placed on the hot plate 70, and the substrate was heated at 200° C. to 210° C. while irradiating ultravi...

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Abstract

Provided is a liquid crystal display device and a manufacturing method thereof. The liquid crystal display device has an alignment film which performs alignment processing through light alignment and eliminates a residual image in an early stage, so as to obtain high definition. The alignment film has a photoconductive characteristic. Since a region having gate lines situated therebelow does not undergo irradiation of a backlight, no photoconductive effect can be obtained. A photoresist is disposed below the alignment film situated over the gate lines in order to transfer the charges in the region to an opening portion of the alignment film in an early stage. Since the photoresist has a thickness of about 1.5 [mu]m, which is 20 times or more the 70 nm thickness of the alignment film, the resistance in the lateral direction is low in a portion where the photoresist is present. Accordingly, since the charges on the alignment film present over the gate line transfer to the opening portion of the alignment film and are eliminated in an early stage, the residual image is eliminated in the early stage.

Description

technical field [0001] The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device including a liquid crystal display panel in which an alignment control ability is imparted to an alignment film by light irradiation. Background technique [0002] A liquid crystal display device is provided with a TFT substrate on which pixel electrodes and thin-film transistors (TFTs) are formed in a matrix, and an opposing substrate that faces the TFT substrate and forms color filters and the like at positions corresponding to the pixel electrodes of the TFT substrate. , liquid crystal is sandwiched between the TFT substrate and the counter substrate. Then, an image is formed by controlling the light transmittance of the liquid crystal molecules for each pixel. [0003] Since liquid crystal display devices are flat and lightweight, they are widely used in various fields ranging from large display devices such as TVs to mobile ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1337G02F1/1333
CPCG02F2001/133397G02F2001/133388G02F1/133788G02F1/133602G02F1/1303G02F1/133388G02F1/133397G02F1/1337
Inventor 松井庆枝国松登园田英博
Owner JAPAN DISPLAY INC