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Optical adhesive resin composition, optical adhesive sheet, image display device, method for producing optical adhesive sheet, and method for producing image display device

An image display device and resin composition technology, applied in the direction of bonding methods, chemical instruments and methods, non-polymer organic compound adhesives, etc., can solve the problems of PDP weight increase, etc., and achieve improved adhesion and retention , excellent height difference followability, low skin irritation effect

Inactive Publication Date: 2013-08-14
HITACHI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the size of the PDP increases, the area of ​​the front panel also increases, so the overall weight of the PDP tends to increase.

Method used

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  • Optical adhesive resin composition, optical adhesive sheet, image display device, method for producing optical adhesive sheet, and method for producing image display device
  • Optical adhesive resin composition, optical adhesive sheet, image display device, method for producing optical adhesive sheet, and method for producing image display device
  • Optical adhesive resin composition, optical adhesive sheet, image display device, method for producing optical adhesive sheet, and method for producing image display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0156] The present invention will be described in detail below through examples, but the scope of the present invention is not limited by these examples. In addition, the measurement of the weight average molecular weight was carried out using the gel permeation chromatography using tetrahydrofuran (THF) as a solvent, and it determined using the following apparatus and measurement conditions, and using the standard polystyrene calibration curve conversion. value.

[0157] Determination of weight average molecular weight

[0158] GPC device: Made by Tosoh (High-speed GPC device HCL-8320GPC)

[0159] Solvent used: THF

[0160] Column: manufactured by Tosoh (column TSKge Super Multipore HZ-H)

[0161] Column temperature: 40°C

[0162] Flow: 0.35ml / min

[0163]

[0164] Each adhesive material sheet for optics obtained in Examples 1-5 and Comparative Examples 1 and 2 was evaluated by the following test method.

[0165] 1. Height difference followability

[0166] Paste Kapu...

manufacture example 1（

[0177] Manufacturing example 1 (preparation of acrylate polymer)

[0178] In a reaction vessel equipped with a cooling tube, a thermometer, a stirring device, a dropping funnel, and a nitrogen injection tube, weigh 35.0 g of 2-ethylhexyl acrylate, 15.0 g of 2-hydroxyethyl acrylate and 2 - 50.0 g of butanone was heated from room temperature to 75° C. over 15 minutes while replacing nitrogen with an air volume of 100 ml / min. Thereafter, while maintaining the temperature at 75°C, 35.0 g of 2-ethylhexyl acrylate, 15.0 g of 2-hydroxyethyl acrylate, and 30.0 g of 2-butanone were weighed as additional monomers, and azobis 0.1 g of isobutyronitrile was used to prepare a solution, and this solution was added dropwise over 60 minutes. After the dropwise addition was completed, the reaction was further performed for 7 hours. The weight average molecular weight of the obtained copolymer was 510,000.

manufacture example 2（

[0179] Manufacturing example 2 (preparation of acrylate polymer)

[0180] An acrylate polymer was synthesized in the same manner as in Production Example 1 except that the quantity of azobisisobutyronitrile in Production Example 1 was 0.01 g. The weight average molecular weight of the obtained copolymer was 690,000.

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Abstract

The present invention is an optical adhesive resin composition containing (A) a (meth)acrylate polymer and (B) a side chain (meth)acrylic-modified (meth)acrylate polymer. The present invention can provide: the optical adhesive resin composition having excellent transparency, having sufficient step conformability, and being suitable for application in an image display device having superior handling characteristics and adhesion; an optical adhesive sheet that uses the optical adhesive resin composition; and an image display device that uses the optical adhesive sheet.

Description

technical field [0001] The present invention relates to an optical adhesive material resin composition suitable for use in image display devices, a method for producing an optical adhesive material sheet using the adhesive material resin composition, an optical adhesive material sheet, and its use. A method for manufacturing an image display device of the optical adhesive material resin composition or an optical adhesive material sheet, and an image display device are disclosed. Background technique [0002] A typical image display device includes a liquid crystal image display device (liquid crystal display (LCD)). The liquid crystal image display device has a liquid crystal display unit and a liquid crystal panel made of optical films such as polarizers pasted on its two outer surfaces. A pair of glass substrates with a thickness of 1000 mm is filled with liquid crystal and sealed with a gap of about several μm. The image display device represented by the liquid crystal ...

Claims

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Application Information

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IPC IPC(8): C09J133/04C08F8/00C08F20/26C08F299/00C08G59/17C09J5/00C09J7/02C09J11/06C09J133/14C09J175/14G02F1/1335
CPCC09J4/06C08G18/6229G06F2203/04103B29D11/0073B32B27/00G02F2202/28C09J7/0217G02F1/13338C08G18/8116G06F3/041C09J2203/318C09J133/066C08F8/30C08F299/00G02F2001/133331C08F2220/1858C09J175/14G06F3/0412C09J7/385C08L33/14C08F220/1808G02F1/133331C08F220/10C08F220/20C08F220/325
Inventor 高桥亨高根信明加茂和幸池内良典林克则新谷健一会津和郎
Owner HITACHI CHEM CO LTD
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