Transparent adhesive composition, transparent adhesive layer and display device including the same

Patent metadata

Field	Value
Publication number	US-10604687-B2
Application number	US-201615383111-A
Country	US
Kind code	B2
Filing date	Dec 19, 2016
Priority date	Dec 30, 2015
Publication date	Mar 31, 2020
Grant date	Mar 31, 2020

Abstract

There is further provided a transparent adhesive composition including a silicon acrylate monomer; a silanol compound; an alkoxy silane compound; and an optical initiator.

First claim

What is claimed is:

1. A transparent adhesive layer consisting of:
a polymer matrix of silicone acrylate;
a silanol compound of Formula (I) dispersed in the polymer matrix:

wherein R 1 and R 2 are a C1 to C10 alkyl;
an optical initiator; and

an alkoxy silane moiety of Formula (III) chemically bonded to the polymer matrix:

wherein R 3 is a C1 to C20 alkyl,

wherein the transparent adhesive layer is formed by curing a composition consisting of a silicon-based compound, the optical initiator, the silanol compound and an alkoxy silane compound, wherein the silicon-based compound is a vinyl terminated polydimethylsiloxane or a thiol terminated polydimethylsiloxane,
wherein the silanol compound and the alkoxy silane compound are present in the composition in the same percentage by weight, and wherein the alkoxy silane compound is represented by formula V:

wherein R 4 is an acrylate group and R 3 is a C1 to C20 alkyl.

2. The transparent adhesive layer of claim 1 , wherein the silanol compound and the alkoxysilane compound are each present in the composition in an amount from 1 to 5 wt. % with respect to the silicone-based compound.

3. A display device comprising:
a display panel;
a cover glass over the display panel; and
the transparent adhesive layer of claim 1 between the display device and the cover glass.

4. The display device according to claim 3 , further comprising a touch panel between the transparent adhesive layer and the display panel.

5. The display device according to claim 3 , wherein the silanol compound and the alkoxysilane compound are each present in the composition in an amount from 1 to 5 wt. % with respect to the silicone-based compound.

6. The transparent adhesive layer of claim 1 , wherein the silanol compound and the alkoxysilane compound are each present in the composition in an amount from 5 to 10 wt. % with respect to the silicone-based compound.

7. The transparent adhesive layer of claim 1 , wherein the silanol compound is a compound of Formula (II):

8. The transparent adhesive layer of claim 1 , wherein R 3 of the alkoxy silane moiety of Formula (III) is a C2 to C10 alkyl.

9. The transparent adhesive layer of claim 1 , wherein the alkoxy silane moiety is a compound of Formula (IV):

Assignees

• Lg Display Co Ltd

Inventors

• Kim Jae-Yeong
• Park Eun-Ju
• Jang Won-Bong
• Hwang Jun-Ha
• JO Tae-Soo

Classifications

• B32B9/045

  of synthetic resin · CPC title

• C09J183/04 Primary

  Polysiloxanes · CPC title

• C09D143/04

  Homopolymers or copolymers of monomers containing silicon · CPC title

• B32B2307/42

  Polarizing, birefringent, filtering · CPC title

• B32B17/00

  Layered products essentially comprising sheet glass, or glass, slag, or like fibres · CPC title