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Anisotropic scattering adhesive member

An anisotropic component technology, applied in the field of anisotropic scattering and adhesion components, can solve problems such as no adhesion

Inactive Publication Date: 2008-08-20
TOMOEGAWA PAPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the above-mentioned light control board and the above-mentioned light-scattering film are used in building materials and various displays centering on LCDs, they have no adhesiveness by themselves.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Partition walls with a height of 0.3 mm were formed with a curable resin using a dispenser on the entire periphery of a PET film having a thickness of 75 μm and a size of 76×26 mm (manufactured by Toyobo Co., Ltd., trade name: A4300). The following photocurable resin composition was dripped there, and it covered with another PET film.

[0058] ・100 parts by weight of UV-curable adhesive containing the first resin component

[0059] (Jujo Chemical Co., Ltd., product name: RAYTACK-10)

[0060] ・11 parts by weight of phenoxyethyl acrylate as the second resin component

[0061] (manufactured by Kyoei Chemical Co., Ltd., trade name: PO-A)

[0062] The liquid film with a thickness of 0.3 mm on both sides sandwiched by PET films was irradiated vertically with an irradiation intensity of 8 mW / cm from a reflection irradiation unit of a UV point light source (manufactured by Hamamatsu Photonics Co., Ltd., trade name: L2859-01). 2 UV light for 15 minutes. Then remove the PET f...

Embodiment 2

[0064] From a linear UV light source (manufactured by Nippon UV Equipment Co., Ltd., trade name: Portable UV Device HUV-100) with an emission length of 125 mm set in a direction perpendicular to the long side of the PET film, to the same PET film as in Example 1, The light-curable resin composition in the sandwiched state is vertically irradiated with ultraviolet rays with the same irradiation intensity as in Example 1, and the TG value measured by the DSC method is -27°C, and the 180-degree peel adhesion is 19N / 25mm, and has the following properties as shown in Figure 2A The anisotropic scattering adhesive member of Example 2 showing plate-shaped regions with different refractive indices.

Embodiment 3

[0066] The same photocurable resin composition sandwiched by PET films as in Example 1 was vertically irradiated with an irradiation intensity of 30 mW / cm from a UV point light source (manufactured by Hamamatsu Photonics Co., Ltd., trade name: L2859-01) for reflection. 2 UV light for 5 minutes. Then remove the PET film on both sides to obtain an embodiment with a TG value of -27°C measured by DSC, a 180-degree peel adhesion force of 19N / 25mm, and multiple columnar micro-regions as shown in Figure 1. 3 Anisotropic scattering adhesion members.

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Abstract

An anisotropic scattering adhesive member in which the amount of linear transmitted light corresponding to the incident light entering into a resin layer has an incident angle dependence property, and the resin layer has an adhesion property, is provided. The anisotropic scattering adhesive member of the present invention has a resin layer having an adhesion property formed by curing a photo-curable resin composition, the glass transition temperature after the curing of the resin layer is in a range of -85 to 0 DEG C., and the amount of linear transmitted light corresponding to an incident light transmitted through the resin layer varies depending on the incident angle-of the incident light against the resin layer. In addition, refractive indexes of mutually adjacent cured areas formed in the resin layer are different.

Description

technical field [0001] The present invention relates to an anisotropic scattering adhesive member whose amount of linearly transmitted light varies greatly depending on the incident angle of incident light and has adhesive properties. Background technique [0002] Light-scattering members have been used not only in lighting equipment and building materials, but also in recent displays, especially LCDs. The mechanism of light scattering of these members includes scattering due to unevenness formed on the surface (surface scattering), scattering due to the difference in refractive index between the matrix resin and the filler dispersed therein (internal scattering), and Scattering due to both surface scattering and internal scattering. However, these light-scattering members generally have isotropic scattering performance, and cannot selectively scatter only incident light having a specific angle. [0003] However, recently, a light control panel capable of selectively scatt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/04G02B5/00
CPCG02B5/0236G02B5/0257Y10T428/28G02F1/133504G02B5/02G02B1/04
Inventor 元田泰彦东健策
Owner TOMOEGAWA PAPER CO LTD