Unlock instant, AI-driven research and patent intelligence for your innovation.

Optical multilayer body and producing method thereof

A technology of optical laminates and adhesive layers, applied in chemical instruments and methods, optics, nonlinear optics, etc., can solve the problems of polarizing plate peeling and polarizing film cracking, and achieve good adhesion and reduced thickness

Active Publication Date: 2010-12-22
SUMITOMO CHEM CO LTD
View PDF13 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the polarizing plate is bonded to the liquid crystal cell substrate by the adhesive disclosed in this document, in a heat resistance test or a thermal shock test, although no major problem was found in a small-sized liquid crystal cell, it was found in a small-sized liquid crystal cell. In liquid crystal cells of medium to large size, 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

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 multilayer body and producing method thereof
  • Optical multilayer body and producing method thereof
  • Optical multilayer body and producing method thereof

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0155] (Production Example 1: Production of Polarizing Film)

[0156] A polyvinyl alcohol film with a thickness of 75 μm having an average degree of polymerization of about 2400 and a degree of saponification of 99.9 mol% or more was immersed in pure water at 30°C, and then immersed in iodine / potassium iodide / water at a weight ratio of 0.02 / 2 / at 30°C. 100 in aqueous solution. Then, it immersed in the aqueous solution whose weight ratio of potassium iodide / boric acid / water is 12 / 5 / 100 at 56.5 degreeC. Next, after washing with pure water at 8° C., drying was performed at 65° C. to obtain a polarizing film having a thickness of about 30 μm in which iodine was adsorbed and oriented in polyvinyl alcohol. The stretching was mainly carried out in the steps of iodine dyeing and boric acid treatment, and the total stretching ratio was 5.3 times.

manufacture example 2

[0157] (Production Example 2: Production of Polarizing Plate)

[0158] On one side of a polyethylene terephthalate (PET) film (manufactured by Toyobo Co., Ltd., Toyobo Ester Film E7002), a coating machine (manufactured by Daiichi Rika Co., Ltd., bar coater) was used, The active energy ray-curable resin composition of the following composition which forms the transparent protective layer of a polarizing film is apply|coated.

[0159] [Active energy ray-curable resin composition for transparent protective layer]

[0160] 3,4-epoxycyclohexylmethyl 3,4-epoxycyclohexanecarboxylate (manufactured by Daicel Chemical Co., Ltd., Seirokisoid 2021P) 35 parts

[0161] 15 parts of bis(3-ethyl-3-oxetanyl methyl) ether (ARONOXETANE OXT-221, manufactured by Toagosei Co., Ltd.)

[0162] Diacrylate of acetal compound of hydroxytrimethylacetaldehyde and trimethylolpropane (manufactured by Shin-Nakamura Chemical Industry Co., Ltd., A-DOG) 50 parts

[0163] 2-Hydroxy-2-methyl-1-phenylpropan-1-on...

manufacture example 3

[0169] (Production Example 3: Preparation of Adhesive Composition)

[0170] The following components were mixed to obtain an ultraviolet curable adhesive composition.

[0171] [UV-curable adhesive composition]

[0172] 3,4-epoxycyclohexylmethyl 3,4-epoxycyclohexanecarboxylate (manufactured by Daicel Chemical Co., Ltd., Seirokisoid 2021P) 75 parts

[0173] 25 parts of bis(3-ethyl-3-oxetanyl methyl) ether (ARONOXETANE OXT-221, manufactured by Toagosei Co., Ltd.)

[0174] 4,4'-bis[diphenylsulfonium]diphenylthiobishexafluorophosphate-based photocationic polymerization initiator (UVACURE 1590 manufactured by Daicel-Saitech Co., Ltd.) 5 parts

[0175] Silicone-based leveling agent (made by Toray Dow Corning, SH710) 0.2 part

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 multilayer body and producing method thereof. The optical multilayer body comprises a liquid crystal unit substrate, a gluing layer which contacts with the surface of the liquid crystal unit substrate, and is a condensate formed by the active energy ray-curable resin composition whose molecule consists of at least one epoxy radical epoxy compound, and a polarizing plate which contacts with the surface of the gluing layer and consists of a polarizing film capable of adsorbing dichroic dye pigment in polyvinyl alcohol resin and is less than 100 Mum in thickness.

Description

technical field [0001] The present invention relates to an optical laminate for a liquid crystal display device, and more particularly, to an optical laminate in which a polarizing plate is laminated via an adhesive layer on a liquid crystal cell substrate including glass, plastic sheets, etc. constituting the liquid crystal display device body. Moreover, this invention relates to the manufacturing method of this optical laminated body. Background technique [0002] The polarizing plate can be effectively used as an optical member constituting a liquid crystal display device. As a polarizing plate, the polarizing plate of the structure which laminated|stacked the protective layer containing a transparent resin film on the single side|surface or both surfaces of a polarizing film, etc. is generally used currently. As such a transparent resin film, a triacetyl cellulose film (TAC film) is often used because it is excellent in optical transparency and moisture permeability. ...

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
IPC IPC(8): G02B5/30G02F1/1335B32B7/12
CPCB32B7/12B32B27/306B32B2329/04B32B2457/202G02B5/30
Inventor 藤长将司八寻智惠竹厚流
Owner SUMITOMO CHEM CO LTD