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Optical adhesive composition and display panel including the same

A technology of optical adhesives and compositions, applied in the direction of adhesive types, polyurea/polyurethane adhesives, adhesives, etc., capable of solving problems such as adhesive overflow

Active Publication Date: 2012-07-04
CHEIL IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adhesive will spill during deposition
Liquid materials had overflow issues, but using liquid materials resolved bubbles

Method used

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  • Optical adhesive composition and display panel including the same
  • Optical adhesive composition and display panel including the same

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0064] Preparation Example 1: Preparation of Polyurethane Acrylate Resin

[0065] 933.01g (equivalent: 1) of polypropylene glycol (PPG 3000), 47.64g (equivalent: 0.69) of isophorone diisocyanate (IPDI) and 3.66g (equivalent: 0.03) of 1,3,6-hexaethylene Methyl triisocyanate was added to a 1L four-necked flask equipped with a stirrer and a thermometer connected to a reaction controller, a condenser, and a nitrogen inlet pipe, and polymerized at 70° C. for 3 hours. While nitrogen gas was supplied at 10 cc / min, 15.44 g (equivalent: 0.16) of 2-isocyanatoethyl methacrylate was added into the flask, and reacted at 45° C. for 3 hours. After confirming the absorption spectrum of isocyanate with FT-IR (2770cm -1 ) disappeared, the reaction was terminated. Thus, a urethane acrylate resin having hydroxyl and vinyl groups was obtained.

preparation example 2

[0066] Preparation Example 2: Preparation of Polyurethane Acrylate Resin

[0067]924.5g (equivalent: 1) of polypropylene glycol (PPG 3000), 47.2g (equivalent: 0.69) of isophorone diisocyanate (IPDI) and 3.6g (equivalent: 0.03) of 1,3,6-hexaethylene Methyl triisocyanate was charged into the same flask as in Preparation Example 1, and polymerized at 70° C. for 3 hours. While supplying nitrogen gas at 10 cc / min, 15.3 g (equivalent: 0.16) of 2-isocyanatoethyl methacrylate and 9.1 g (equivalent: 0.06) of 3-isocyanatopropyltriethoxysilane were added into the flask and react at 45°C for 3 hours. After confirming the absorption spectrum of isocyanate with FT-IR (2770cm -1 ) disappeared, the reaction was terminated. Thus, a urethane acrylate resin having hydroxyl, vinyl and silyl groups is obtained.

preparation example 3

[0068] Preparation Example 3: Preparation of Polyurethane Acrylate Resin

[0069] Prepare the urethane acrylate resin with hydroxyl group and vinyl group with the same method as Preparation Example 1, difference is to use the polypropylene glycol (PPG 3000) of 940.27g (equivalent: 1), the isophorone of 48.01g (equivalent: 0.69) Diisocyanate (IPDI), 3.69 g (equivalent: 0.03) of 1,3,6-hexamethylene triisocyanate and 7.78 g (equivalent: 0.08) of 2-isocyanatoethyl methacrylate.

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Abstract

The invention relates to an optical adhesive composition and a display panel including the same. Concretely, the invention relates to an optical adhesive composition and a display panel including the same, the optical adhesive composition includes a urethane(meth)acrylate resin having at least one hydroxyl group and at least one vinyl group so as to improve curing contraction ration, adhesion force, extension rate, and outdoor visibility, and no bubbles are generated when the optical adhesive composition is attached on a film or glass.

Description

technical field [0001] The present invention relates to an optical adhesive composition and a display panel including the optical adhesive composition. More specifically, the present invention relates to an optical adhesive composition comprising a polyurethane having at least one hydroxyl group and at least one vinyl group ( Meth)acrylate resins to improve cure shrinkage ratio, adhesion, elongation, and outdoor visibility without generating bubbles when attached to film or glass. Background technique [0002] Mobile displays are divided into portable displays including touch screen panels and stationary displays for TVs and monitors. In particular, a display panel for a portable display is susceptible to impact damage as the size of the panel increases, and its outdoor visibility needs to be improved. Therefore, optical adhesives are used to compensate for vulnerability to impact and to improve outdoor visibility. [0003] Optical adhesives can be classified into film ty...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C08G18/81
CPCC08G18/8116C09J175/16C08G18/0823C08G18/722C08G18/718C08G18/672C08G18/48C08G18/6692
Inventor 河京珍权智慧李吉成伊琳娜·南金伊俊
Owner CHEIL IND INC
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