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Liquid crystal display device and manufacturing method thereof

A technology of a liquid crystal display device and a manufacturing method, which is applied in the fields of optics, instruments, nonlinear optics, etc., and can solve problems such as degradation and disturbance of voltage response characteristics

Active Publication Date: 2016-08-24
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

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Embodiment approach 1

[0124] 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. According to Embodiment Mode 1, the first alignment film and the second alignment film (alignment films 22 and 32) are configured to contain one, two or more types of polymer compounds containing crosslinked structures as side chains (alignment treatment post compound). In addition, the pretilt is imparted on the liquid crystal molecules by cross-linked or polymerized compounds. Here, before the liquid crystal layer 40 is provided, after forming the alignment films 22 and 32 containing one, two or more types of high molecular compounds (compounds before alignment treatment) containing main chains and side chains, The alignment...

Embodiment approach 2

[0253] 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.

[0254] In Embodiment 1, the compound after alignment treatment is obtained by crosslinking or polymerizing the crosslinkable functional group or polymerizable functional group in the compound before alignment treatment containing a crosslinkable functional group or polymerizable functional group as a side chain. On the other hand, in Embodiment 2, the compound after alignment treatment is obtained by deforming the compound before alignment treatment containing a photosensitive functional group as a side chain by irradiation with energy rays.

[0255]In Embodiment 2, the alignment films 22 and 32 are also configured to include one, two or more types of polymer compounds (first alignment-treate...

Embodiment 1

[0265] 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, later in Figure 15 The shown liquid crystal display device (liquid crystal display element) was manufactured by the following procedure.

[0266] 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 the pixe...

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Abstract

The present invention relates to a liquid crystal display device and a manufacturing method thereof. The liquid crystal display device includes a liquid crystal display element including: a first alignment film and a second alignment film provided on two opposing sides of a pair of substrates; and a first alignment film provided on the first alignment film. Between the second alignment film and a liquid crystal layer containing liquid crystal molecules having negative dielectric constant anisotropy, wherein at least the first alignment film contains a crosslinkable functional group or a polymerizable functional group as a side chain A compound obtained by cross-linking or polymerizing a polymer compound; a pretilt is imparted on the liquid crystal molecules by the first alignment film; and the thickness of the second alignment film is smaller than the thickness of the first 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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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1337G02F1/139
CPCG02F1/133707G02F1/133711G02F1/133742
Inventor 宫川干司诹访俊一仲村真彦矶崎忠昭
Owner SONY CORP
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