Composite sheet, method for manufacturing same, and display device including same

Patent metadata

Field	Value
Publication number	US-2016114555-A1
Application number	US-201414893921-A
Country	US
Kind code	A1
Filing date	May 9, 2014
Priority date	Jul 26, 2013
Publication date	Apr 28, 2016
Grant date	—

Abstract

Provided are: a composite sheet comprising a silicone matrix and a first sheet including a reinforcement material impregnated into the silicone matrix, wherein the first sheet has a compression elongation of about 30% or more; a method for manufacturing the same; and a display device including the same.

First claim

1 . A composite sheet comprising:
a first sheet comprising a silicone matrix, and a reinforcing material impregnated in the silicone matrix, wherein the first sheet has a compressive elongation of about 30% or more.

2 . A composite sheet comprising:
a first sheet comprising a silicone matrix, and a reinforcing material impregnated in the silicone matrix, wherein the first sheet has a transmittance of about 80% or more on a thickness of 100 μm at 25° C. and at a wavelength of 550 nm after allowing it left at 250° C. for 1 hour.

3 . The composite sheet according to claim 1 , wherein the silicone matrix has a tensile elongation of about 15% or more.

4 . The composite sheet according to claim 1 , wherein the silicone matrix comprises a cured product of a matrix composition containing a linear silicone rubber.

5 . The composite sheet according to claim 4 , wherein the linear silicone rubber is prepared from a composition for preparing silicone rubbers comprising phenylmethyldimethoxysilane, dimethyldimethoxysilane and vinylmethyldimethoxysilane.

6 . The composite sheet according to claim 5 , wherein the vinylmethyldimethoxysilane is present in an amount of about 1.0 wt % or less in the composition for preparing silicone rubbers.

7 . The composite sheet according to claim 4 , wherein the linear silicone rubber comprises a repeat unit of Formula 4:

(wherein Formula 4, * is a linking site of an element, 0<x<1, 0<y<1, 0≦z≦1, and Me is a methyl group).

8 . The composite sheet according to claim 1 , wherein the first sheet has a modulus of about 5 to 20 MPa.

9 . The composite sheet according to claim 4 , wherein the matrix composition further comprises a non-rubber silicone compound.

10 . The composite sheet according to claim 9 , wherein the non-rubber silicone compound is a cyclic siloxane compound.

11 . The composite sheet according to claim 10 , wherein the cyclic siloxane compound is represented by Formula 16:

(wherein Formula 16, R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , and R 3 are each independently a C 1 -C 10 alkyl group, a C 6 -C 20 aryl group, a vinyl group, an allyl group, an allyloxy group, a vinyloxy group, or Formula 17,

(wherein Formula 17, * is a linking site of Si in Formula 16,
R 9 is a C 1 -C 10 alkylene group, or a C 6 -C 20 arylene group, R 10 , R 11 , and R 12 are each independently a C 1 -C 10 alkyl group, a C 6 -C 20 aryl group, a vinyl group, an allyl group, an allyloxy group, or a vinyloxy group, and X 1 and X 2 are each independently a single bond, O, S, or NR, wherein R is hydrogen or a C 1 -C 10 alkyl group),
at least one of R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , and R 8 are a vinyl group, an allyl group, an allyloxy group, a vinyloxy group, Formula 17 in which at least one of R 10 , R 11 , and R 12 are a vinyl group, Formula 17 in which at least one of R 10 , R 11 , and R 12 are an allyl group, Formula 17 in which at least one of R 10 , R 11 , and R 12 are an allyloxy group, or Formula 17 in which at least one of R 10 , R 11 , and R 12 are a vinyloxy group).

12 . The composite sheet according to claim 9 , wherein the linear silicone rubber is present in an amount of about 60 to 80 wt %, and the non-rubber silicone compound is present in an amount of about 1 to 30 wt %, on the solid contents in the matrix composition.

13 . The composite sheet according to claim 1 , wherein the reinforcing material has a refractive index of about 1.5 or less.

14 . The composite sheet according to claim 1 , wherein reinforcing material comprises at least one selected from the group consisting of glass fibers, glass fiber clothes, glass fabrics, glass non-woven clothes, and glass meshes.

15 . The composite sheet according to claim 1 , wherein the composite sheet further comprises a barrier layer formed on one or both sides of the first sheet.

16 . The composite sheet according to claim 1 , comprising a second sheet formed on at least one side of the first sheet, wherein the second sheet has a surface energy of about 55 dyne/cm or more, a modulus of about 20 MPa or more, and a cross cut of about 90% or more to the first sheet.

17 . The composite sheet according to claim 16 , wherein the second sheet has a surface roughness (Ra) of about 100 nm or less.

18 . The composite sheet according to claim 16 , wherein if a modulus of the first sheet is M 1 , and a modulus of the second sheet is M 2 , then M 1 ≦M 2 .

19 . The composite sheet according to claim 16 , wherein the first sheet and the second sheet are integral.

20 . The composite sheet according to claim 16 , wherein the second sheet is a cured product of an acryl resin containing composition.

21 . The composite sheet according to claim 16 , wherein the composite sheet further comprises a barrier layer formed on one or both sides of the second sheet.

22 . A process of preparing a composite sheet comprising:
laminating a base film applied with a second sheet composition on a matrix in which a reinforcing material is impregnated, and curing the second sheet composition and the matrix, wherein, prior to the curing, the matrix and the second sheet composition are in the state not fully cured.

23 . The process according to claim 22 , wherein the second sheet composition has a curing rate of about 10 to 50%.

24 . The process according to claim 22 , wherein the base film comprises a film with a primer layer formed.

25 . The process according to claim 22 , wherein the second sheet composition comprises an acryl resin.

26 . A display apparatus comprising:
a substrate, and an element for apparatuses formed on the substrate, wherein the substrate comprises the composite sheet according to claim 1 .

Assignees

• Samsung Sdi Co Ltd

Inventors

• Jeong Eun Hwan
• Lee Woo Jin
• Kim Sung Kook
• Cho Jae Cheol

Classifications

• B32B2457/202

  LCD, i.e. liquid crystal displays · CPC title

• B32B2383/00

  Polysiloxanes · CPC title

• B32B2307/306

  Resistant to heat · CPC title

• B32B2260/046

  Synthetic resin · CPC title

• B32B2307/54

  Yield strength; Tensile strength · CPC title