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Liquid crystal display device and manufacturing method thereof

A technology of liquid crystal display device and liquid crystal display element, which is applied in the directions of instruments, optics, nonlinear optics, etc., and can solve the problems of poor voltage response characteristics and interference.

Active Publication Date: 2017-04-12
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the direction in which the liquid crystal molecules aligned in the direction perpendicular to the substrate collapses is arbitrary, the alignment of the liquid crystal molecules is disturbed by the applied voltage, which becomes a factor that makes the response characteristics to voltage worse

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

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0161] Embodiment 1 relates to a liquid crystal display device (or liquid crystal display element) in VA mode according to aspects (1-A) to (1-D) of the present invention, and a liquid crystal display device manufactured according to the first to fourth aspects of the present invention device (or liquid crystal display element) method. In Embodiment 1, the first alignment film and the second alignment film (alignment films 22 and 32) contain one or more polymer compounds (compounds after alignment treatment) containing first side chains with a cross-linked structure . In addition, the liquid crystal molecules are pretilted. Here, the liquid crystal layer 40 is provided by forming the alignment films 22 and 32 in a state where one or more polymer compounds (compounds before alignment treatment) having a main chain, a first side chain, and a second side chain are contained therein. , and then, more specifically, crosslinking or polymerizing the high molecular compound or apply...

Embodiment approach 2

[0316] Embodiment Mode 2 relates to liquid crystal display devices according to aspects (2-A) to (2-D) of the present invention and methods of manufacturing liquid crystal display devices according to the second and fourth aspects of the present invention.

[0317] In Embodiment 1, the compound after alignment treatment can be obtained by crosslinking or polymerizing the crosslinkable functional group or polymerizable functional group in the compound before alignment treatment having a crosslinkable functional group or a polymerizable functional group as the first side chain . On the other hand, in Embodiment 2, a compound after alignment treatment can be obtained based on a compound before alignment treatment having a photosensitive functional group having, as a first side chain, a photosensitive functional group having deformation caused by irradiation of energy rays.

[0318] Here, even in Embodiment Mode 2, the alignment films 22 and 32 may contain one or more kinds of fir...

Embodiment approach 3

[0330] Embodiment 3 relates to a liquid crystal display device according to aspects (3-A) to (3-D) of the present invention and a method of manufacturing a liquid crystal display device according to the third aspect of the present invention. In Embodiment 3, 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 having a crosslinkable functional group or polymerizable functional group as a side chain.

[0331] Here, even in Embodiment 3, the side chains in the polymer compounds constituting the alignment films 22 and 32 have crosslinkable functional groups or polymerizable functional groups, and also have structural formulas (13), (14), (15) or (16). In addition, the liquid crystal molecules are pretilted by the cross-linked or polymerized compound. Here, the alignment films 22 and 32 are formed by forming the alignment films 22 and 32 in...

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Abstract

The present invention provides 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 opposing surfaces of a pair of substrates, and a liquid crystal display element provided on the first alignment film and the second alignment film A liquid crystal layer containing liquid crystal molecules with negative dielectric constant anisotropy between the alignment films. At least the first alignment film includes a compound in which a polymer compound having a first side chain and a second side chain is cross-linked or polymerized. The first side chain has a crosslinkable functional group or a polymerizable functional group. The second side chain has a structure that induces dielectric anisotropy. The liquid crystal molecules are pretilted by 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 liquid crystal layers are sealed on their opposing surfaces with alignment films and a method of manufacturing the liquid crystal display device. between a pair of substrates. Background technique [0002] In recent years, liquid crystal displays (LCDs) have been widely used as monitors for liquid crystal television receivers, notebook personal computers, car navigation devices, and the like. Such liquid crystal displays are classified into various display modes (schemes) according to the molecular arrangement (alignment) of liquid crystal molecules contained in a liquid crystal layer sandwiched between substrates. For example, a TN (twisted nematic) mode in which liquid crystal molecules are aligned and twisted in a state where no voltage is applied is known as a display mode. In the TN mode, the liquid crystal molecules have positiv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1337G02F1/1333
CPCC08G73/10C08L79/08C09K2323/02G02F1/133711G02F1/133742G02F1/1337
Inventor 宫川干司诹访俊一矶崎忠昭
Owner SONY CORP