Adhesive agent layer for flexible image display device, laminate body for flexible image display device, and flexible image display device

A technology for image display devices and adhesive layers, applied in the direction of adhesive types, ester copolymer adhesives, adhesives, etc., can solve problems such as hindering the flexibility of organic EL display devices

Pending Publication Date: 2021-01-29
NITTO DENKO CORP
View PDF21 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional optical films including polarizing films and the like laminated on organic EL display panels have the problem of hindering the flexibility of organic EL display devices.

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
  • Adhesive agent layer for flexible image display device, laminate body for flexible image display device, and flexible image display device
  • Adhesive agent layer for flexible image display device, laminate body for flexible image display device, and flexible image display device
  • Adhesive agent layer for flexible image display device, laminate body for flexible image display device, and flexible image display device

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0150] The preparation method of the above-mentioned adhesive composition is not particularly limited, and a known method can be used. For example, as described above, the solvent-type acrylic adhesive composition is prepared by adding a (meth)acrylic polymer, if necessary, The components (such as the above-mentioned (meth)acrylic oligomer, crosslinking agent, silane coupling agent, solvent, additives, etc.) are mixed to produce. In addition, as described above, the active energy ray-curable acrylic pressure-sensitive adhesive composition is obtained by mixing a monomer mixture or a partial polymer thereof, and optionally added components (such as the above-mentioned photopolymerization initiator, polyfunctional monomer, base) acrylic oligomer, crosslinking agent, silane coupling agent, solvent, additives, etc.)

[0151] The adhesive composition described above preferably has a viscosity suitable for handling and coating. Therefore, the active energy ray-curable acrylic press...

Embodiment 1

[0231]

[0232] A monomer mixture containing 59 parts by weight of lauryl acrylate (LA), 40 parts by weight of 2-ethylhexyl acrylate (2EHA), and 1 part by weight of 4-hydroxybutyl acrylate (4HBA), 2 , 2-dimethoxy-1,2-diphenylethan-1-one (trade name "IRGACURE 651", manufactured by BASF Japan Co., Ltd.) and 1-hydroxycyclohexyl phenyl ketone (trade name "IRGACURE 184 ", manufactured by BASF Japan Co., Ltd.) were put into a four-neck flask in an amount of 0.05 parts by weight, and photopolymerized by irradiating ultraviolet rays in a nitrogen atmosphere until the viscosity (BH viscometer No. 5 rotor, 10 rpm, temperature 30°C) reached about 15 Pa s, thereby obtaining a partially polymerized monomer slime (partial polymer of monomer components).

[0233]

[0234] In 100 parts by weight of the partially polymerized monomer viscous obtained, 5 parts by weight of N-vinylpyrrolidone and 1,6-hexanediol diacrylate (trade name "A-HD-N ", manufactured by Shin-Nakamura Chemical Co., Ltd...

Embodiment 2～3、 comparative example 1～5

[0238] In the preparation of the prepolymer of Example 1, the monomer mixture (type, composition) of the prepolymer was changed as shown in Table 2, and in the preparation of the acrylic adhesive composition, additional The monomer (type, compounding amount) was changed as shown in Table 2, except that, the preparation of the prepolymer and the preparation of the acrylic adhesive composition were carried out in the same manner as in Example 1, and then, the Adhesive layer.

[0239] It should be noted that, in Comparative Examples 2 and 3, as shown in Table 2, the compounding amount of 1,6-hexanediol diacrylate was changed to 0.3 parts by weight, and 2, The amount of 2-dimethoxy-1,2-diphenylethan-1-one (trade name "IRGACURE 651", manufactured by BASF Japan Co., Ltd., additional initiator) was changed to 0.6 parts by weight.

[0240] After producing an optical layered body using each member produced by the following method, an optical layered body with an adhesive layer was pro...

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

This adhesive agent layer for a flexible image display device according to the present invention is characterized by having a storage elastic modulus G' of 3.5*10<4>-1.7*10<5> Pa at -20 DEG C, a storage elastic modulus G' of 1.0*10<4>-5.0*10<4> Pa at 23 DEG C, and a difference of 5.2*10<3> Pa or more between the storage elastic modulus G' at 23 DEG C and a storage elastic modulus G' at 85 DEG C. This adhesive agent layer for the flexible image display device can satisfy bending resistance from low temperatures to high temperatures.

Description

technical field [0001] The present invention relates to an adhesive layer for a flexible image display device. Moreover, this invention relates to the laminated body for flexible image display devices which used the said adhesive layer for flexible image display devices, and used the optical film containing at least a polarizing film, for example. Moreover, this invention relates to the flexible image display apparatus which arrange|positioned the said laminated body for flexible image display apparatuses. Background technique [0002] As a touch sensor integrated organic EL display device, such as figure 1 As shown, an optical laminate 20 is provided on the visible side of the organic EL display panel 10 , and a touch panel 30 is provided on the visible side of the optical laminate 20 . The optical laminated body 20 includes the polarizing film 1 and the retardation film 3 to which the protective films 2-1 and 2-2 were joined on both surfaces, and the polarizing film 1 is...

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): C09J7/38B32B7/02B32B27/00C09J133/06G02B5/30H01L27/32H01L51/50
CPCB32B7/023B32B27/00C09J133/06C09J7/38G02B5/30B32B7/02H10K59/8791C09J133/04B32B7/12C08F220/10G09F9/301C09J2301/312C09J2203/318
Inventor 下栗大器野中崇弘藤田昌邦外山雄祐
Owner NITTO DENKO CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap