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Photo-curing adhesive composition, polaroid and manufacturing method thereof, optical component and LED device

A photocurable, adhesive technology, used in non-polymer organic compound adhesives, optical components, polarizing components, etc., can solve the problem of polarizer discoloration and other problems, and achieve the effect of excellent reliability

Active Publication Date: 2012-07-04
TOAGOSEI CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0021] In order to solve the problem when bonding a polyvinyl alcohol-based polarizer and a protective film with low moisture permeability by wet lamination, it is considered to increase the length of the drying oven after lamination to obtain more drying time, but simply increasing When the drying oven is long, there is a problem that discoloration is likely to occur due to thermal deterioration of the polarizer

Method used

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  • Photo-curing adhesive composition, polaroid and manufacturing method thereof, optical component and LED device
  • Photo-curing adhesive composition, polaroid and manufacturing method thereof, optical component and LED device
  • Photo-curing adhesive composition, polaroid and manufacturing method thereof, optical component and LED device

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Embodiment Construction

[0053] Next, the present invention will be described in detail. In the present invention, when a protective film composed of a transparent resin film is adhered to a polarizer composed of a polyvinyl alcohol-based resin film that has been uniaxially stretched and adsorbed and oriented with a dichroic dye, a photocurable adhesive having a specific composition is used. Mixture composition. Thus, a polarizing plate is obtained by bonding a polarizer and a protective film together via a photocurable adhesive composition. The polarizer can be laminated with an optical layer having other optical functions to form an optical component. In addition, the optical component can be arranged on at least one side of the liquid crystal cell to form a liquid crystal display device. Hereinafter, it demonstrates in order of a photocurable adhesive composition, a polarizing plate, the manufacturing method of a polarizing plate, an optical member, and a liquid crystal display device.

[0054] ...

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Abstract

The invention provides a photo-curing adhesive composition which adheres a polarizer and a protective film to a polaroid, a polaroid which uses the adhesive composition to adhere the protective film to the polarizer, and method of manufacturing polaroids, an optical component using the Polaroid and an LED device. The photo-curing adhesive composition is characterized in that it contains: (A) two epoxy compounds pf alicyclic epoxy group expressed in the following formula (1); (B) poly-(meth) acrylate of polyhydric alcohol with 2-15 carbon atoms (wherein, the number of polyether glycol whose oxyalkylene repeat units is over 3 ); (C) light cationic polymerization initiator; (D) oxetane compound expressed in the following formula (2).

Description

technical field [0001] The present invention relates to a photocurable adhesive composition used for bonding a polarizer and a protective film in a polarizing plate, a polarizing plate for bonding a protective film and a polarizer using the adhesive composition, and the polarizing plate manufacturing method. In addition, the present invention also relates to an optical component and a liquid crystal display device using the polarizing plate. Background technique [0002] A polarizing plate is used as one of optical components constituting a liquid crystal display device. A polarizing plate is generally used by being incorporated into a liquid crystal display device in a state where protective films are laminated on both surfaces of a polarizer. It is known that a protective film is provided only on one side of a polarizer, but in many cases, a layer having other optical functions is bonded to the other side not as a simple protective film but also as a protective film. Mo...

Claims

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Application Information

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IPC IPC(8): C09J4/02C09J4/06C08G59/24C08G59/20G02B5/30G02F1/1335
CPCC09J7/22C09J133/04C09J163/00C09J2203/318C09J2301/40C09J2301/408G02B5/3025G02B5/305
Inventor 稻田和正佐内康之市原正宽藤田政大
Owner TOAGOSEI CO LTD
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