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Liquid crystal display device and manufacturing method thereof

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

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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Effect test

Embodiment approach 1

[0124] Embodiment 1 relates to the VA mode liquid crystal display device (or liquid crystal display element) according to the first embodiment of the present invention and relates to the liquid crystal display device (or liquid crystal display element) according to the first embodiment or the third embodiment of the present invention Production method. According to Embodiment 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 a crosslinked structure as a side chain (orientation treatment After the compound). In addition, the pretilt is imparted on the liquid crystal molecules by a cross-linked or polymerized compound. Here, before providing the liquid crystal layer 40, after forming the alignment films 22 and 32 containing one, two or more types of polymer compounds containing main chains and side chains (pre-alignment treatment compounds), While applying an ele...

Embodiment approach 2

[0253] Embodiment 2 relates to a liquid crystal display device according to the second embodiment of the present invention, and relates to methods of manufacturing liquid crystal display devices according to the second and third embodiments of the present invention.

[0254] In Embodiment 1, the post-alignment compound is obtained by crosslinking or polymerizing the crosslinkable functional group or polymerizable functional group in the pre-alignment compound containing a crosslinkable functional group or polymerizable functional group as a side chain. On the other hand, in Embodiment 2, the post-alignment compound is obtained by deforming the pre-alignment compound 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 (compounds after the first alignment treatment) having a cross-linked structure in the side chain...

Embodiment 1

[0265] Example 1 relates to a liquid crystal display device (liquid crystal display element) and a manufacturing method thereof according to the first embodiment of the present invention, and a liquid crystal display device (liquid crystal display element) and a manufacturing method thereof according to the third embodiment of the present invention. In Example 1, later on Figure 15 The shown liquid crystal display device (liquid crystal display element) is manufactured through the following process.

[0266] First, the TFT substrate 20 and the CF substrate 30 are prepared. A first electrode including a slit pattern (the width and pitch of the first slit portion 21 are 5 μm and 65 μm, respectively, and the first slit portion 21 is formed thereon is formed on one side of the glass substrate 20A having a thickness of 0.7 mm 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...

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Abstract

A liquid crystal display device including a liquid crystal display element including 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 at least the first alignment film includes a compound in which a polymer compound that includes a cross-linked functional group or a polymerized functional group as the side chain is cross-linked or polymerized, a pretilt is conferred on the liquid crystal molecules by the first alignment film, and the thickness of the second alignment film is thinner than the thickness of the first alignment film.

Description

Technical field [0001] The present invention relates to a liquid crystal display device and a method for manufacturing such a liquid crystal display device. In a liquid crystal display element contained in the liquid crystal display device, a liquid crystal layer is sealed between a pair of substrates having alignment films on opposite surfaces. Background technique [0002] Recently, liquid crystal display devices (LCD) 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 (provided between substrates). For example, a TN (Twisted Nematic) mode is generally used as a display mode in which liquid crystal molecules are twisted and aligned in a state where no voltage is applied. In the TN mode, the liquid crystal molecules have a ...

Claims

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Application Information

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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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