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Optical laminate and method for producing optical laminate

A manufacturing method and optical layer technology, which are applied in the field of optical laminates and can solve problems such as generation of ripples and reduction of contrast.

Active Publication Date: 2012-08-15
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, especially when these optical layered bodies are used in high-definition image panels developed in recent years, although anti-glare and anti-glare properties can be appropriately imparted, the irregularities formed by the phase separation structure tend to be regularized. pattern, there may be problems such as moiré between the pixels of the display and the checkered pattern, or a decrease in contrast due to whitishness

Method used

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  • Optical laminate and method for producing optical laminate
  • Optical laminate and method for producing optical laminate
  • Optical laminate and method for producing optical laminate

Examples

Experimental program
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Effect test

Embodiment 1

[0169]

[0170] A composition is prepared by adding the above-mentioned materials appropriately and mixing them well. The obtained composition was filtered through a polyacrylic acid filter having a pore diameter of 30 μm to obtain a coating liquid. Using a Meyer wire bar, this coating solution was applied on a triacetyl cellulose base film (manufactured by TD80U Fujifilm Co., Ltd.) with a thickness of 80 μm to a dry film thickness of 4 μm, followed by nitrogen purging. Under low temperature (oxygen concentration below 200ppm) to irradiate ultraviolet rays, the irradiation dose reaches 100mj, so that the coating film is cured, an anti-glare layer is formed, and an optical layered body is obtained.

Embodiment 2

[0172]

[0173] A composition is prepared by adding the above-mentioned materials appropriately and mixing them well. The obtained composition was filtered through a polyacrylic acid filter having a pore diameter of 30 μm to obtain a coating liquid. Using a Meyer wire-wound bar, apply this coating liquid on a triacetyl cellulose substrate film (TD80U Fujifilm Co., Ltd.) with a thickness of 80 μm to a dry film thickness of 4 μm. 200ppm or less) is irradiated with ultraviolet rays, and the irradiation dose reaches 100mj, so that the coating film is cured, an anti-glare layer is formed, and an optical layered body is obtained.

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Abstract

Provided is an optical laminate wherein background reflection, glare and reduction in contrast are prevented so as to give excellent visibility and excellent color reproducibility. The optical laminate comprises, on a light-transmitting substrate, at least a glare-proofing layer, wherein said glare-proofing layer has an uneven pattern on the surface in the opposite side to the light-transmitting substrate, said uneven pattern consisting of an uneven pattern (A), which is formed by the phase separation of a binder resin constituting said glare-proofing layer, and an uneven pattern (B), which is formed by internal particles contained in said glare-proofing layer, and having a 10-point average surface roughness (Rz) of less than 3 [mu]m.

Description

technical field [0001] The present invention relates to an optical layered body and a method for producing the optical layered body. Background technique [0002] As a protective film for image display screens such as display screens, monitors, and touch screens, it has hard coating properties (scratch resistance), antistatic properties (preventing dust adhesion, and preventing orientation disorder caused by static electricity of liquid crystals), anti-reflective properties ( An optical layered body composed of functional layers having properties such as improved visibility), anti-glare properties, and anti-fouling properties (fingerprint adhesion prevention) is well known. [0003] It is known to equip the above-mentioned optical layered body with an anti-glare layer having a concave-convex shape on the surface, particularly in order to improve the degradation of visibility caused by reflection of external light on the image display screen or reflection of external scenes. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/02B32B7/02B32B27/32F21S2/00F21V3/04G02F1/13357F21Y101/02F21Y103/00
CPCG02B1/105G02B1/10G02B1/118G02B5/021G02B5/0221
Inventor 古井玄臼杵秀树堂森志洋成川隆史
Owner DAI NIPPON PRINTING CO LTD
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