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Liquid crystal display device and manufacturing method thereof

A technology of a liquid crystal display device and a manufacturing method, applied in nonlinear optics, instruments, optics, etc., can solve the problems of disturbing voltage response characteristics, deterioration and the like

Active Publication Date: 2012-08-29
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the liquid crystal molecules aligned in the vertical direction are random to the direction in which the substrate falls, the disturbance of the orientation of the liquid crystal molecules due to the application of the voltage is a cause of deterioration of the response characteristics with respect to the voltage.

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

Experimental program
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Embodiment approach 1

[0110] Embodiment 1 relates to a VA-mode liquid crystal display device (or liquid crystal display element) according to the first embodiment of the present invention and relates to a liquid crystal display device (or liquid crystal display element) according to the first embodiment or the third embodiment of the present invention. Manufacturing method. In Embodiment Mode 1, the first alignment film 22 is configured to contain one, two or more types of polymer compounds (first alignment-treated compounds) having crosslinked structures as side chains. Then, a pretilt is imparted on the liquid crystal molecules by a cross-linked or polymerized compound. Here, after forming the alignment film 22 containing one, two or more types of first polymer compounds (compounds before the first alignment treatment) containing main chains and side chains, after applying an electric field or a magnetic field, At the same time, the first alignment is generated by crosslinking or polymerizing th...

Embodiment approach 2

[0241] Embodiment 2 relates to the liquid crystal display device according to the second embodiment of the present invention, and relates to the manufacturing method of the liquid crystal display device according to the second embodiment and the third embodiment of the present invention.

[0242] In Embodiment 1, the compound after the first alignment treatment is obtained by crosslinking or polymerizing the crosslinkable functional group or the polymerizable functional group in the compound before the first alignment treatment containing a crosslinkable functional group or a polymerizable functional group as a side chain . On the other hand, in Embodiment 2, the compound after the first alignment treatment is obtained by deforming the compound before the first alignment treatment containing a photosensitive functional group as a side chain by irradiation with energy rays.

[0243] In addition, in Embodiment 2, the first alignment film 22 is also configured to contain one, two...

Embodiment 1

[0256] Example 1 relates to a liquid crystal display device (liquid crystal display element) and a manufacturing method thereof according to a first embodiment of the present invention and a liquid crystal display device (liquid crystal display element) and a manufacturing method thereof according to a third embodiment of the present invention. In Example 1, figure 1 The shown Embodiment 1 liquid crystal display device (liquid crystal display element) is manufactured through the following procedure.

[0257] First, the TFT substrate 20 and the CF substrate 30 are prepared. On one side of a glass substrate 20A having a thickness of 0.7 mm, a first electrode having a slit pattern (the width and pitch of the first slit portions 21 are 5 μm and 65 μm, respectively, on which the first slit portions 21 are formed) is formed. The width of each part of 20B is 60 μm, and the interval between the first electrode 20B and the other first electrode 20B is 5 μm) and the base material of th...

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Abstract

A liquid crystal display device including a liquid crystal display device that includes a first alignment film and a second alignment film that are provided on opposing face sides of a pair of substrates and a liquid crystal layer provided between the first alignment film and the second alignment film and that includes liquid crystal molecules with negative dielectric constant anisotropy, wherein the first alignment film includes a compound in which a first polymer compound that includes a cross-linked functional group or a polymerized functional group as a side chain is cross-linked or polymerized, the second alignment film includes a compound in which a second polymer compound is cross-linked or polymerized, and a pretilt is conferred on the liquid crystal molecules by cross-linking or polymerizing the first polymer compound by the first alignment film and vertically aligning the liquid crystal molecules by the second alignment film.

Description

technical field [0001] The present invention relates to a liquid crystal display device comprising a liquid crystal display element in which a liquid crystal layer is sealed between a pair of substrates having alignment films on opposite surfaces thereof, and a method of manufacturing such a liquid crystal display device. Background technique [0002] Recently, liquid crystal display devices (LCDs) have been used as display monitors for liquid crystal televisions, notebook computers, and car navigation devices. Such liquid crystal display devices are classified into various display modes according to the molecular arrangement (orientation) of liquid crystal molecules contained in a liquid crystal layer (disposed between substrates). As a display mode, for example, a TN (Twisted Nematic) mode in which liquid crystal molecules are twisted and aligned in a state where no voltage is applied is generally used. In the TN mode, the liquid crystal molecules have the property of pos...

Claims

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Application Information

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IPC IPC(8): G02F1/1337G02F1/1333G02F1/139
CPCG02F1/133707G02F1/133788G02F1/133715G02F1/133742G02F1/133757G02F1/133773
Inventor 宫川干司诹访俊一仲村真彦磯崎忠昭
Owner SONY CORP
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