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Optical member and application of same

A technology for optical components and components, applied in optical components, optics, nonlinear optics, etc., can solve problems such as adhesive rejection, bubble generation in optical components and transparent protective components, and achieve the effect of suppressing poor appearance

Inactive Publication Date: 2015-03-11
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, depending on the optical part used, the adhesive may be repelled when the adhesive is dropped on the optical part, and as a result, air bubbles are generated between the optical part and the transparent protective part

Method used

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  • Optical member and application of same
  • Optical member and application of same
  • Optical member and application of same

Examples

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Effect test

Embodiment

[0075] The present invention is further described in detail with examples below, but the present invention is not limited to these examples.

[0076]

[0077] A binder for evaluation that was analyzed as follows by gas chromatography was used.

[0078] Main ingredient: Isoprene polymer

[0079] Dicyclopentenyloxyethyl methacrylate: 14% by weight

[0080] Benzyl methacrylate: 8% by weight

[0081] Methyl methacrylate: 2% by weight

[0082] Photopolymerization initiator (Yanjiagu 184): 0.2% by weight

[0083] Other additives: (meth)acrylate monomer 0.8% by weight, acetone, 2,4,6-trimethylbenzoic acid, 1-octyl mercaptan, diphenylphosphine Peak observed, but below limit of quantitation.)

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Abstract

An optical member for use in an image display device provided with the optical member, a transparent protective member, and an adhesive layer interposed therebetween, and further provided with an image display disposed on the side opposite from the adhesive layer on the optical member. The optical member satisfies condition (1); that is, an evaluative adhesive having an isoprene polymer as the principal component thereof and containing 14 wt% of dicyclopentenyloxyethyl methacrylate, 8 wt% of benzyl methacrylate, 2 wt% of methyl methacrylate, and 0.2 wt% of a photopolymerization initiator is dripped in an amount of 10 µL onto the surface of the optical member and then allowed to stand for 5 minutes, whereupon the contact angle between the optical member and the evaluative adhesive is 55° or less. The invention provides an optical member in which appearance defects due to bubbles forming between the optical member and the transparent protective member can be reduced, and further provides an image display device in which such appearance defects are reduced through the use of the optical member.

Description

technical field [0001] The present invention relates to an optical member for use in an optical member having an optical member, a transparent protective member, and an adhesive layer interposed between the two members, and further having an image display portion on the side of the optical member opposite to the adhesive layer image display device. Background technique [0002] It is known that in image display devices such as liquid crystal display (LCD), organic electroluminescence display (ELD), plasma display (PDP), surface conduction electron emission display (SED), field emission display (FED), etc., images such as liquid crystal cells Optical components such as polarizing plates, anti-glare films, and anti-reflection films are placed on the viewing side of the display unit. To protect these optical components, a transparent protective member made of glass or the like is placed with an adhesive layer in between. As a method for producing such an image display device, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/02C09J109/00G02B1/11G02B5/30G02F1/1335
CPCG02F1/133502G02B1/105C09J109/00G02F2202/28G02F2001/13332C09J133/14G02B1/14G02F1/13332G02B5/02G02B5/30
Inventor 福浦知浩井上登士哉
Owner SUMITOMO CHEM CO LTD
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