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Transmitting screen-use light diffusing member

A light-diffusing and transmissive technology, applied in the direction of diffusing elements, optical elements, optics, etc., can solve problems such as the disappearance of concave-convex shapes on the surface of light-diffusing plates, the inability to obtain surface protection effects, and inability to obtain anti-reflection effects, etc.

Inactive Publication Date: 2007-03-14
DAI NIPPON PRINTING CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] However, if a protective layer (also referred to as a hard coat layer) is provided on the surface of the above-mentioned light-diffusing plate in order to protect the surface of the screen, there is a problem that the uneven shape of the surface of the light-diffusing plate disappears, and the anti-corrosion effect cannot be obtained. reflection effect
[0004] On the other hand, when trying to set the protective layer to the extent that the anti-reflection effect is achieved, there is a problem that the thickness of the protective layer must be smaller than the degree of unevenness of the surface of the light-diffusing plate, that is, the particle diameter of the transparent particles. thinner, and therefore cannot obtain sufficient surface protection

Method used

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  • Transmitting screen-use light diffusing member
  • Transmitting screen-use light diffusing member
  • Transmitting screen-use light diffusing member

Examples

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Embodiment

[0041] Hereinafter, the present invention is further described in detail by using examples, but the present invention is not limited to these

[0042] Example.

[0043] As the resin used for the base material of the light-diffusing member, MS (methacrylic acid-styrene copolymer) resin (refractive index: 1.53) was used. MS beads (refractive index: 1.49, average particle diameter: 10 μm) were used as microparticles used in the base material, and the addition amount of the microparticles to the base material was 15% by weight. These mixtures were extruded with a melt extruder to prepare a base material for a light-diffusing member.

[0044] Then, on the surface of the base material, an ultraviolet curable resin composition mainly composed of urethane acrylate is coated by dip coating, and ultraviolet rays are irradiated to cure the resin composition to form a hard coat layer on the base material to obtain light diffusing parts. The thickness of the hard coat layer is adjusted ...

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Abstract

A light diffusing member which has an excellent surface protection effect while keeping an antireflection effect, and is used in a transmitting screen. The transmitting screen-use light diffusing member comprises a hard-coat layer provided on the surface of a base material consisting of at least one layer, wherein the base material includes fine particles, and the surface glossiness of the hard-coat layer is 60-80 under measuring conditions of an incident angle of 60 DEG / reflection angle of 60 DEG when the surface glossiness of a gloss standard sheet is 100.

Description

technical field [0001] The present invention relates to a light-diffusing member for a transmissive screen used in a transmissive projection television or the like, and an optical member and a transmissive screen using the light-diffusing member. Background technique [0002] Transmissive projection TV is a display device that magnifies and projects images from light sources such as CRT, LCD projector, and DLP on a transmissive screen. In such a display device, in order to reduce glare when viewing the screen, a light diffusion plate or the like for diffusing emitted light is provided on the surface of the screen. In addition, an anti-reflection film may be provided on the screen surface in order to reduce deterioration in visibility of a projected image caused by external light reflected on the screen surface. Such light-diffusing plates and anti-reflection films are disclosed in JP-A No. 11-295818 and JP-A-7-28169 by adding transparent materials such as organic fillers to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/02B32B7/02G02B1/10G03B21/62G02B1/111G02B1/14G03B21/625
CPCG02B5/0226G02B5/0242G03B21/625G02B5/0294G02B5/0278
Inventor 马场重树大高规彦鱼谷幸史中野公一桥本浩二
Owner DAI NIPPON PRINTING CO LTD
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