Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Optical laminated body and manufacture method thereof

An optical laminate and adhesive layer technology, applied in chemical instruments and methods, optics, bonding methods, etc., can solve the problems of polarizing film rupture, polarizing plate peeling, lack of economy, etc. Good performance and thin-walled effect

Inactive Publication Date: 2011-09-14
SUMITOMO CHEM CO LTD
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the case where the polarizing plate disclosed in this document is bonded to the liquid crystal cell substrate via an adhesive, in a heat resistance test or a thermal shock test, although no major problem is found in a small-sized liquid crystal cell, However, when made into medium to large size liquid crystal cells, there are problems such as peeling of the polarizing plate from the surface of the liquid crystal cell substrate or cracking of the polarizing film
In addition, although the thickness of the optical laminate obtained by bonding a polarizing plate to a liquid crystal cell substrate with this adhesive can be reduced, it cannot be achieved with a polarizing plate temporarily bonded to a liquid crystal cell. peel it off easily
For this reason, if some unsuitability is found in the inspection after bonding, the liquid crystal cell cannot be reused unless it is treated with a special organic solvent, which is uneconomical.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Optical laminated body and manufacture method thereof
  • Optical laminated body and manufacture method thereof
  • Optical laminated body and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0145] 380 parts of water and 100 parts of acrylic acid were added to a reaction vessel equipped with a cooling pipe, a nitrogen introduction pipe, a thermometer, and a stirrer, and the air in the device was replaced with nitrogen to make it free of oxygen, and the inner temperature was raised to 80°C. Then, 0.2 parts of potassium persulfate (polymerization initiator) was dissolved in 20 parts of water, and all of this solution was added to the reaction vessel. Furthermore, the internal temperature was kept at 79-81° C. for 6 hours, and finally water was added to adjust the concentration of polyacrylic acid to 5%. The viscosity of the obtained 5% polyacrylic acid aqueous solution was 52 mPa·sec.

manufacture example 2

[0147] 870 parts of water and 100 parts of acrylic acid were added to a reaction vessel equipped with a cooling pipe, a nitrogen gas introduction pipe, a thermometer, and a stirrer, and the air in the device was replaced with nitrogen to make it free of oxygen, and the inner temperature was raised to 80°C. Then, 0.3 parts of potassium persulfate (polymerization initiator) was dissolved in 30 parts of water, and the whole of the solution was added to the reaction vessel. Furthermore, the internal temperature was kept at 79-81° C. for 6 hours, and finally water was added to adjust the concentration of polyacrylic acid to 5%. The viscosity of the obtained 5% polyacrylic acid aqueous solution was 41 mPa·sec.

manufacture example 3

[0149] In the reaction vessel equipped with cooling pipe, nitrogen inlet pipe, thermometer and stirrer, add 415 parts of water, 100 parts of acrylic acid and 9.5 parts of itaconic acid, replace the air in the device with nitrogen to make it free of oxygen, and make the inner temperature Warm up to 80°C. Then, 0.2 parts of potassium persulfate (polymerization initiator) was dissolved in 23 parts of water and the whole of the solution was added to the reaction vessel. Furthermore, the internal temperature was kept at 79-81° C. for 6 hours, and finally water was added to adjust the concentration of the acrylic acid / itaconic acid copolymer to 5%. The viscosity of a 5% aqueous solution of the obtained acrylic acid / itaconic acid copolymer was 27 mPa·sec.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides an optical laminated body and a manufacture method thereof, wherein the optical laminated body is thin-shaped, light in weight and excellent in endurance. A polymer (such as polyacrylic acid) with a compound having alkene double bonds and carboxyls as the main monomer is adopted to form an adhesive layer (2) of a water system adhesive of the main component of the optical laminated body. A glass plate (1) is attached to a plastic sheet (3) by the adhesive layer (2) so as to form the optical laminated body (10). The optical laminated body (10) is manufactured by the following processes: (a) the attaching surface of the glass plate (1) and / or the plastic sheet (3) is provided with an adhesive composition containing the polymer aqueous solution; (b) the glass plate (1) is attached to the plastic sheet (3) by the adhesive layer; (c) the attached product is inspected. If there is a defect, the product is taken out off the production line; (d) If there is no defect, the adhesive layer of the attached product is solidified.

Description

technical field [0001] The present invention relates to an optical laminate suitable for a liquid crystal display device. More specifically, the present invention relates to a method for bonding a glass plate, typically a liquid crystal cell substrate, which is a central part of a liquid crystal display device, via an adhesive (Japanese original text) : An optical laminate in which a plastic sheet, typically a polarizing plate, is laminated as a subsequent layer. In addition, the present invention also relates to a method of advantageously producing the optical laminate. Background technique [0002] A polarizing plate is useful as an optical component constituting a liquid crystal display device. As a polarizing plate, a polarizing plate having a structure in which a protective layer including a transparent resin film is laminated on one or both sides of a polarizing film made of a polyvinyl alcohol-based resin via an aqueous adhesive or the like is currently used. As suc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B32B17/10B32B27/30B32B7/12B32B37/12C09J7/02C09J133/02
CPCG02F1/1335G02B5/30C09J4/00C09J5/04C09J7/20C09J11/06C09J133/02C09J157/10B32B7/12B32B15/08B32B17/10B32B27/00B32B27/20B32B27/30B32B37/12B32B27/306B32B2329/04B32B2457/202
Inventor 竹厚流藤长将司阪上智惠
Owner SUMITOMO CHEM CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com