Siloxane resin composition, adhesive using same, display device, semiconductor device, and illumination device

Patent metadata

Field	Value
Publication number	US-11319445-B2
Application number	US-201816634369-A
Country	US
Kind code	B2
Filing date	Jun 21, 2018
Priority date	Aug 2, 2017
Publication date	May 3, 2022
Grant date	May 3, 2022

Abstract

Provided is a siloxane resin composition having excellent adhesion and fine patterning properties. The siloxane resin composition contains: a siloxane resin (A) including a structure represented by general formula (1), a structure represented by general formula (2), and a structure represented by general formula (3); a compound (B) having an unsaturated double bond; a photopolymerization initiator (C); and a solvent (D).

First claim

The invention claimed is:

1. A siloxane resin composition comprising a siloxane resin (A) containing a structure as represented by the undermentioned general formula (1), a structure as represented by the undermentioned general formula (2), and a structure as represented by the undermentioned general formula (3), a compound (B) containing an unsaturated double bond, a photo-initiator (C), solvent (D), and a photoacid generator (E):

wherein in general formulae (1) to (3), R 1 , R 2 , and R 3 are each independently a hydrogen atom, a hydroxy group, a group having a siloxane bond, or a monovalent organic group having 1 to 30 carbon atoms; X is an alkenyl group, an alkynyl group, a monovalent organic group having a nitrogen atom and a carbon-oxygen unsaturated bond, or a monovalent organic group having a cyclic ether bond; Y is a monovalent organic group having a photoradical polymerizable group (other than alkenyl groups and alkynyl groups); Z is a monovalent organic group having an alkali soluble group; a, b, and c are each independently an integer of 1 or more; and if a to c are 2 or more, the plurality of R 1 's, R 2 's, R 3 's, X's, and Y's may be identical to or different from each other.

2. A siloxane resin composition as set forth in claim 1 , wherein hydrocarbon groups having 1 to 30 carbon atoms account for 10 to 80 mol % relative to the total number of moles of R 1 , R 2 , and R 3 .

3. A siloxane resin composition as set forth in claim 1 , wherein a, b, and c account for 10% to 60%, 20% to 60%, and 5% to 35%, respectively, relative to the total molar number of a, b, and c.

4. A siloxane resin composition as set forth in claim 1 , wherein in the aforementioned general formulae (1) to (3), X is a vinyl group and/or a monovalent organic group having a cyclic ether bond; Y is a monovalent organic group having a (meth)acryloyl group; and Z is a monovalent organic group having a carboxyl group.

5. A siloxane resin composition as set forth in claim 4 , wherein in the aforementioned general formula (1), X contains 8 or more carbon atoms.

6. An adhesive produced from a siloxane resin composition as set forth in claim 1 .

7. A cured product with a film thickness of 10 to 200 μm produced by curing a siloxane resin composition as set forth in claim 1 .

8. A display device comprising a cured product as set forth in claim 7 , a substrate, and at least one selected from the group consisting of liquid crystal cell, organic EL cell, mini-LED cell, and micro-LED cell.

9. A semiconductor device comprising a cured product as set forth in claim 7 .

10. A lighting device comprising a cured product as set forth in claim 7 .

Assignees

• Toray Industries

Inventors

• Iizuka Eisuke
• Yamaguchi Michiko
• Suwa Mitsuhito
• Kamogawa Masao

Classifications

• H10W72/071

  Connecting or disconnecting · CPC title

• C08L2203/20

  use in electrical or conductive gadgets · CPC title

• C08F299/08

  from polysiloxanes · CPC title

• C08G77/20

  containing silicon bound to unsaturated aliphatic groups · CPC title

• C08G77/14

  containing silicon bound to oxygen-containing groups · CPC title