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Liquid crystal display element and manufacturing method therefor

A technology of liquid crystal display element and manufacturing method, applied in the direction of instruments, optics, nonlinear optics, etc., to achieve the effect of suppressing the decline of display quality

Inactive Publication Date: 2015-02-04
NISSAN CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a process using light irradiation can improve the problems of the existing manufacturing processes such as vacuum injection method or rubbing treatment, and is effective in improving production efficiency and manufacturing yield.

Method used

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  • Liquid crystal display element and manufacturing method therefor
  • Liquid crystal display element and manufacturing method therefor
  • Liquid crystal display element and manufacturing method therefor

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0073] The liquid crystal display element of Embodiment 1 of this invention is demonstrated using drawing.

[0074] As an example, the liquid crystal display element of the present embodiment may be a TN (Twisted Nematic) type color liquid crystal display element.

[0075] In this case, the liquid crystal display element of this embodiment has, for example, a TFT substrate on which thin film transistors (Thin Film Transistor: TFT) are disposed and a CF substrate having a color filter layer (hereinafter, sometimes referred to as a CF layer). A liquid crystal layer is held, and a sealing material is placed around the pixel formation area where image formation is performed, and these substrates are fixed together.

[0076] Hereinafter, the structure of the liquid crystal display element of this embodiment is demonstrated in more detail.

[0077] figure 1 It is a cross-sectional view schematically showing the structure of the liquid crystal display element of this embodiment.

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Embodiment approach 2

[0253] Like the liquid crystal display element of Embodiment 1 mentioned above, the liquid crystal display element of Embodiment 2 of this invention is comprised using the liquid crystal aligning film which can reduce performance deterioration effectively even if it receives ultraviolet-ray irradiation. Moreover, in the case of the liquid crystal display element of Embodiment 2, this liquid crystal aligning film is a photo-aligning film which exhibits liquid-crystal orientation control ability by performing photo-alignment process by ultraviolet-ray irradiation. Therefore, the liquid crystal display element according to Embodiment 2 of the present invention is a liquid crystal display element in which reduction in performance degradation is suppressed through a process of irradiating ultraviolet rays in the pixel formation region of the liquid crystal aligning film for photo-alignment treatment.

[0254] The liquid crystal display element of the present embodiment is the same a...

Embodiment approach 3

[0271] The liquid crystal display element according to Embodiment 3 of the present invention is a PSA (Polymer Sustained Alignment) type liquid crystal display element. When constituting a PSA system liquid crystal display element, a vertical alignment type liquid crystal aligning film is used as a liquid crystal aligning film.

[0272] Therefore, it is preferable to form the liquid crystal aligning film of the liquid crystal display element of Embodiment 3 similarly to the liquid crystal aligning film of the liquid crystal display element of Embodiment 1 using a liquid crystal aligning agent. Therefore, the liquid crystal aligning film of the present embodiment preferably uses the liquid crystal aligning agent of the above-mentioned Embodiment 1 in order to provide the liquid crystal display element of the present embodiment in which performance degradation is suppressed through the step of irradiating ultraviolet rays in the pixel forming region. to form. And, in particular...

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Abstract

A liquid crystal display element (1) is configured so that a TFT substrate (2) and a CF substrate (3) provided with a CF layer (7) sandwich a liquid crystal layer (4). The TFT substrate (2) and the CF substrate (3) are provided with a liquid crystal alignment film (12). In the liquid crystal display element (1), a sealing material (16) uses a UV ray curable resin, and even in the regions where pixels are formed, UV rays for curing the sealing material (16) are radiated and provided. The liquid crystal display element (1) is configured using the liquid crystal alignment film (12) which contains a polyimide film synthesized from a diamine compound of a specific structure. When the sealing material (16) is cured, even if the regions where pixels are formed are irradiated with UV rays, the degradation of functionality is suppressed.

Description

technical field [0001] The present invention relates to a liquid crystal display element and a manufacturing method thereof. Background technique [0002] A liquid crystal display element is configured by sandwiching and enclosing a liquid crystal layer between a pair of substrates, and aligning liquid crystals in the liquid crystal layer in a certain direction. The alignment of liquid crystals is realized by a liquid crystal alignment film provided on the surface of the substrate with the ability to control the alignment of liquid crystals. In a liquid crystal display element, a liquid crystal responds by applying a voltage to an electrode arranged between a substrate and a liquid crystal alignment film, and a desired image can be displayed in an image forming range by utilizing the alignment change of the liquid crystal. Therefore, the liquid crystal display element can provide a thin and light high-quality display device. [0003] In the manufacture of a liquid crystal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1337C08G73/12G02F1/1339
CPCG02F2001/133715G02F1/133788G02F1/1339C08G73/12G02F1/133723C08G73/1007C08G73/1078G02F1/133715
Inventor 名木达哉樱井宏之筒井皇晶
Owner NISSAN CHEM IND LTD
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