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Adhesive film for polarizing plate, adhesive composition for the same, polarizing plate comprising the same, and optical display apparatus comprising the same

An adhesive film, polarizing plate technology, applied in the direction of polymer adhesive additives, film/sheet adhesives, non-polymer adhesive additives, etc., can solve the problem of curling, damage, and difficulty in storage. Curing consistency and other issues

Active Publication Date: 2014-06-18
CHEIL IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, since the cationically polymerizable UV-curable adhesive undergoes a dark reaction (post-polymerization) after UV irradiation, when the cured product of the adhesive is prepared in the form of a roll, it often suffers from curling during storage.
In addition, cationically polymerizable UV-curable adhesives are susceptible to moisture damage during the curing process, making it difficult to maintain a consistent cure

Method used

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  • Adhesive film for polarizing plate, adhesive composition for the same, polarizing plate comprising the same, and optical display apparatus comprising the same
  • Adhesive film for polarizing plate, adhesive composition for the same, polarizing plate comprising the same, and optical display apparatus comprising the same
  • Adhesive film for polarizing plate, adhesive composition for the same, polarizing plate comprising the same, and optical display apparatus comprising the same

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Embodiment Construction

[0024] One aspect of the present invention provides an adhesive film for a polarizing plate, which can be used to attach an optical film to one or both sides of a polarizer. The optical film may include at least one of a protective film and a retardation film.

[0025] The adhesive film may include core-shell type particles including a core and a shell surrounding the core. Due to this structure, the adhesive film can absorb external impacts such as heat and the like, thereby preventing the polarizer or polarizing plate from undergoing cracking.

[0026] The core may comprise an elastomer composed of rubber material. Therefore, the adhesive film can protect the polarizer from external shocks in the external environment or by stress relaxation between the polarizer and the optical film in the case of a sudden increase or decrease in external temperature. Variety.

[0027] The core is composed of a soft elastomer, has a glass transition temperature (Tg) of less than about 25°...

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Abstract

An adhesive film for polarizing plates includes core-shell particles, each including a core and a shell surrounding the core. An adhesive composition for the adhesive film includes an epoxy compound, a (meth)acrylic compound, core-shell particles, each core-shell particle including a core and a shell surrounding the core, and a photo-initiator. A polarizing plate includes a polarizer, an optical film on one or both sides of the polarizer, and the adhesive film between the polarizer and the optical film. An optical display apparatus includes the polarizing plate.

Description

technical field [0001] The present invention relates to an adhesive film for a polarizing plate, an adhesive composition for the polarizing plate, a polarizing plate including the adhesive film, and an optical display including the polarizing plate. More specifically, the present invention relates to an adhesive film for a polarizing plate, an adhesive composition for the polarizing plate, a polarizing plate including the adhesive film, and an optical display including the polarizing plate, the adhesive The mixture film contains particles of core-shell type to protect the polarizer from thermal shock due to rapid rise or fall of external temperature, so as to prevent cracking of the polarizer or a polarizing plate including the polarizer, to control the polarizer. The storage modulus of the adhesive film at high temperature, thereby preventing the cracking of the polarizing plate at high temperature, and having improved properties in the adhesiveness, light transmittance, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/00C09J7/02C09J4/02C09J11/08G02B5/30G02B1/10C09J11/06C09J109/00C09J123/26C09J133/04C09J133/18C09J163/00C09J183/04C09J201/00
CPCC09J133/08C09J163/00C09J133/066C08L2312/06C08L33/06C08L63/00Y10T428/31515C09J7/22G02B5/3025G02B5/305G02F1/1309G02F1/1313C09J2203/318
Inventor 李泰贤俞美然李度宪韩仁天
Owner CHEIL IND INC
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