Production method of light scattering film, light scattering film, polarizing plate, image display device, and transmissive/semi-transmissive liquid crystal display device

A light-scattering film and solution technology, applied in the identification device, polarizing element, optics, etc., can solve the problems of narrowing the distance between the light source and the diffusing sheet, and difficult to diffuse light by conventional diffusing films.

Active Publication Date: 2010-10-06
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As the thickness of the LCD decreases, the distance between the light source of the backlight and the diffusion sheet narrows, so it is difficult to achieve uniform light diffusion with conventional diffusion films

Method used

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  • Production method of light scattering film, light scattering film, polarizing plate, image display device, and transmissive/semi-transmissive liquid crystal display device
  • Production method of light scattering film, light scattering film, polarizing plate, image display device, and transmissive/semi-transmissive liquid crystal display device
  • Production method of light scattering film, light scattering film, polarizing plate, image display device, and transmissive/semi-transmissive liquid crystal display device

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Embodiment Construction

[0085] The light-scattering film according to an exemplary embodiment of the present invention causes neither reduction in brightness of forward white light nor moire fringes, especially when it is used as a protective film of a polarizing plate on the backlight side of a liquid crystal display device, Capable of providing image display with highly uniform brightness.

[0086] Next, exemplary embodiments of the present invention will be described, but the present invention is not limited to them. In the specification, when a numerical value represents a physical property value, characteristic value, etc., the term "from (numerical value 1) to (numerical value 2)" means "(numerical value 1) or greater but not greater than (numerical value 2) ". The term "(meth)acrylate" as used herein means at least one of acrylate and methacrylate. This also applies to "(meth)acrylic" or "(meth)acryloyl".

[0087] The present invention relates to a light-scattering film having light-scatter...

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Abstract

A method for producing a light scattering film is provided and includes: casting onto a support a dope containing at least a thermoplastic resin and light transmitting particles to provide a casted film, and peeling and drying the casted film to prepare a light transmitting base material; applying an coating solution containing at least a curable compound, a polymerization initiator, and a solvent onto the light transmitting base material and drying the solvent; and curing the curable compound to form a cured layer. At least one surface of the light transmitting base material has an asperity shape, the light transmitting particles have an average primary particle size greater than 2.5 [mu]m but not greater than 12 [mu]m, the cured layer has an average thickness of 0.1 [mu]m or greater but not greater than 10.0 [mu]m, and the cured layer satisfies the specific formulae.

Description

[0001] This application is based on and claims priority under 35 U.S.C. §119 of Japanese Patent Application No. 2009-083792 filed on March 30, 2009, the entire disclosure of which is hereby incorporated by reference. technical field [0002] The invention relates to a production method of a light-scattering film, a light-scattering film, a polarizing plate, an image display device and a transmissive / semi-transmissive liquid crystal display device. Background technique [0003] In recent years, liquid crystal displays (LCDs) have been widely used because they are thin, lightweight, and consume little power. Liquid crystal displays include liquid crystal cells and polarizing plates. A polarizing plate is generally formed of a protective film and a polarizing film, and a polarizing plate can be obtained by dyeing a polarizing film made of polyvinyl alcohol with iodine, stretching the resulting film, and then stacking protective films on both sides thereof . In a transmissive ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/10G02B5/02G02B5/30G02F1/1335G02F1/13357G09F9/00
CPCG02B5/02G02F2001/133607G02F1/133607
Inventor 渡部淳米山博之阿比留大作
Owner FUJIFILM CORP
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