Optical layered body, polarizer and image display device

A technology of optical laminates and polarizers, applied in the directions of optics, optical elements, polarizing elements, etc., can solve the problems of reduced contrast and white turbidity, and achieve the effect of excellent contrast and gentle tilt angle.

Active Publication Date: 2013-08-14
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such an anti-glare film, even if the generation of interference fringes can be prevented, there are still problems such as a cloudy feeling and a decrease in contrast.

Method used

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  • Optical layered body, polarizer and image display device
  • Optical layered body, polarizer and image display device
  • Optical layered body, polarizer and image display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0161] Prepare a light-transmitting substrate (thickness 60 μm triacetyl cellulose resin film, manufactured by Fujifilm Co., Ltd., TD60UL), and coat the composition for a hard coat of the composition shown below on one side of the light-transmitting substrate, Form a coating film. Next, the formed coating film was dried by flowing dry air at 70° C. at a flow rate of 0.2 m / s for 15 seconds, and then drying it at a flow rate of 10 m / s at 70° C. for 30 seconds. Evaporate the solvent in the coating film, and irradiate ultraviolet rays in a nitrogen atmosphere (oxygen concentration 200ppm or less) using an ultraviolet irradiation device (manufactured by Fusion UV Systems Japan, light source H tube) so that the cumulative light intensity becomes 100mJ / cm 2 , and the coating film was cured to form a hard coat layer with a thickness of 4 μm (at the time of curing), and the optical laminate of Example 1 was produced.

[0162] (composition for hard coat)

[0163] Fumed silica (octylsi...

Embodiment 2

[0181] Except that the compounding amount of fumed silica is set to 1.5 parts by mass, a composition for a hard coat is prepared in the same manner as in Example 1, and a composition for a hard coat is prepared in the same manner as in Example 1 except that the composition for a hard coat is used. Optical laminate of Example 2.

Embodiment 3

[0183] Except that the compounding amount of fumed silica is set to 0.5 parts by mass, a composition for a hard coat is prepared in the same manner as in Example 1, and a composition for a hard coat is prepared in the same manner as in Example 1 except that the composition for a hard coat is used. Optical laminate of Example 3.

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PUM

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Abstract

The present invention provides an optical layered body, a polarizer and an image display device. The optical layered body can fully restrain interference fringe and crimp, realize the thinning of an optical function layer, and prevent the manufacture cost to be increased. The optical layered body of the invention possesses the optical function layer on one surface of a transmission base material, and is characterized in that the surface of the above optical function layer has a convex-concave shape, for the convex-concave shape, when the average slant angle of the convex-concave shape is theta a, and the concave-convex skewness is Sk, the absolute value of the Sk and the theta a satisfy the following formula: 0.01 degree <= theta a<=0.10 degree (absolute value of Sk) <=0.5.

Description

technical field [0001] The present invention relates to an optical laminate, a polarizing plate, and an image display device. Background technique [0002] In image display devices such as cathode ray tube display device (CRT), liquid crystal display device (LCD), plasma display device (PDP), electroluminescent display device (ELD), field emission display device (FED), etc., there are anti-reflective properties Optical laminates composed of functional layers with various properties such as antistatic properties, hard coat properties, and antifouling properties. [0003] Such an optical laminate is formed by laminating various optical functional layers on a translucent substrate. Therefore, when forming, for example, a hard coat layer on a light-transmitting substrate, the reflected light at the interface between the light-transmitting substrate and the hard coat layer interferes with the reflected light on the surface of the hard coat layer, and a so-called phenomenon occur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/10G02B5/02G02B5/30G02F1/1335B32B7/02G02B1/11G02B1/111G02B1/14
CPCG02B1/14G02B5/3033B32B7/02C08J7/0427G02B1/04G02B5/305
Inventor 小久见尚一郎江口淳哉古井玄皆越清馨岩田行光
Owner DAI NIPPON PRINTING CO LTD
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