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Polarizing plate and liquid crystal display apparatus

A liquid crystal display device and polarizer technology, applied in polarizing elements, optics, instruments, etc., can solve problems such as light unevenness, and achieve the effects of improving deformation failure, suppressing light unevenness, and reducing deformation failure

Active Publication Date: 2018-08-31
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Specifically, it is considered that when the polarizing plate expands and contracts, the liquid crystal panel bonded to the polarizing plate is warped, and the backlight member, etc. are also deformed, and the liquid crystal panel is brought into contact with the backlight member, thereby causing light unevenness.

Method used

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  • Polarizing plate and liquid crystal display apparatus
  • Polarizing plate and liquid crystal display apparatus
  • Polarizing plate and liquid crystal display apparatus

Examples

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Embodiment

[0200] The following examples are given to further describe the present invention in detail. The materials, usage amounts, ratios, processing contents, processing procedures, etc. shown in the following examples can be appropriately changed within the scope not departing from the gist of the present invention. Therefore, the scope of the present invention is not limited to the specific examples shown below.

[0201] 《1》Manufacture and evaluation of transparent layer

[0202] The following raw materials were used.

[0203] 1) Resin

[0204] Resin 1:

[0205] Commercially available polystyrene (manufactured by PS Japan Corporation, SGP-10, Tg 100°C) was heated at 110°C and returned to normal temperature (23°C) for use.

[0206] Resin 2:

[0207] Commercially available ARTON (manufactured by JSR Corporation, G7810, Tg 168° C.) was heated at 110° C. and returned to normal temperature for use.

[0208] Resin 3:

[0209] A commercially available acrylic resin (manufactured by...

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Abstract

The invention provides: a polarizing plate that includes a polarizing layer and a transparent layer, wherein the transparent layer and the polarizing layer are adhered to each other via an adhesive layer, the film thickness of the adhesive layer is 1-1000 nm, the film thickness of the transparent layer is 0.1-10 [mu]m, the sign of the photoelastic coefficient and the orientational birefringence ofthe transparent layer are reverse to each other, and the absolute value of the photoelastic coefficient of the transparent layer is at least 2x10-12 Pa-1; and a liquid crystal display apparatus thathas the polarizing plate.

Description

technical field [0001] The invention relates to a polarizer and a liquid crystal display device. Background technique [0002] Polarizers are an essential part of liquid crystal display devices. A typical polarizer has a structure in which an optical film is bonded to one or both surfaces of a polarizing layer in which a dichroic dye such as an iodine complex is adsorbed to a polyvinyl alcohol (PVA) resin and oriented. [0003] In recent years, liquid crystal display devices have been rapidly reduced in thickness and size, and the problem of light unevenness occurring on the display surface of the liquid crystal display device due to environmental changes has become apparent. [0004] In the polarizing plate which is an essential part of a liquid crystal display device, thickness reduction and enlargement are progressing, and deformation|transformation of a polarizing plate tends to cause the display failure of a liquid crystal panel easily. Specifically, when the polarizi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30G02F1/1335G02F1/13363
CPCG02B1/08G02B5/3033G02B5/3083G02F1/133528B32B2307/42G02B5/30G02F1/134363G02F2202/28
Inventor 奥田周平佐佐田泰行
Owner FUJIFILM CORP
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