Adhesive composition for controlling light leakage and optical film coated with the same for display device

A display device, composition technology, applied in optics, adhesive type, nonlinear optics, etc., can solve problems such as adhesive flow or contamination
CN101735751AInactive Publication Date: 2010-06-16TORAY SAEHAN
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TORAY SAEHAN
Publication Date
2010-06-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to an adhesive composition used for controlling light leakage and an optical film coated with the same for display device. The adhesive composition can reduce the contraction stress of adhesive for supplementing light leakage property and minimizing the residual stress caused by the dimension change of the substrate of the optical film and the adhesive. Therefore, the adhesive composition comprises the following components: (A) reactive high molecular weight acrylic acid copolymer with weight-average molecular weight of 2,000,000-2,500,000; (B) reactive middle molecular weight acrylic acid copolymer with weight-average molecular weight of 1,500,000-2,000,000; (C) reactive low molecular weight acrylic acid copolymer with weight-average molecular weight of 100,000-500,000; and (D) crosslinking agent. The invention is characterized in that the high modular weight, the middle modular weight and the low modular weight acrylic acid copolymers are the reactive copolymers polymerized by the following substances: (a) 90-99.9 parts by weight of alkyl acrylate with the alkyls with 4-12 carbon atoms; and (b) 0.1-10 parts by weight of vinyl monomer with the functional groups which can crosslink with the crosslinking agent.
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Description

technical field

[0001] The present invention relates to an adhesive composition for controlling light leakage and an optical film for a display device coated with the composition, and more particularly, the present invention relates to properties that can supplement light leakage by relieving shrinkage stress of an adhesive Adhesive composition for controlling light leakage which can minimize residual stress due to difference between dimensional changes of base of optical film and adhesive, and display coated with the composition Optical film of the device. Background technique

[0002] Recently, adhesives for optical films requiring various advanced functions and reliable durability have been used. In particular, adhesives for attaching polarizing films to substrates used in liquid crystal cells are subjected to even harsher conditions for their application. In such conditions, the polarizing film has dimensional changes that may cause blistering, peeling or light leakage...

Claims

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