Adhesive film, optical member, and optical display apparatus
AssigneeSamsung SDI Co., Ltd.
InventorsJung Hyo LEE, Won KIM, Young Hoon KIM, Ji Hye LEE, Il Jin KIM
Life of this patent
Estimating the term…
Abstract
Provided are an adhesive film, an optical member comprising same, and an optical display apparatus comprising same, the adhesive film comprising a thermally cured product of an adhesive composition comprising a (meth)acrylic copolymer, a curing agent, an at least monofunctional compound containing an aromatic group, an at least monofunctional compound containing a long-chain alkyl group, and an initiator, wherein the adhesive film has a variation of peel strength of formula 1 of at most 1.0 before light radiation.
Claims18
An adhesive film comprising a thermally cured product of an adhesive composition including a (meth)acrylic based copolymer, a curing agent, an aromatic group-containing monofunctional or higher compound, a long-chain alkyl group-containing monofunctional or higher compound, and an initiator, wherein the adhesive film has a peel strength increase rate of 1.0 or less as measured by the following Equation 1 before light irradiation:
- Peel
-
- strength
-
- increase
-
- rate
- =
- (
- P
-
- 2
- -
- P
-
- 1
- )
- /
- P
-
- 1
- ,
- [
- Equation
-
- 1
- ]
- where, in Equation 1,
- P1 is the peel strength (units:
- gf/inch) of the adhesive film with respect to an adherend after a specimen prepared by adhering the adhesive film to the adherend is allowed to stand at 23° C. and a relative humidity of 50% for 30 minutes, and
- P2 is the peel strength (units:
- gf/inch) of the adhesive film with respect to an adherend after a specimen prepared by adhering the adhesive film to the adherend is allowed to stand at 23° C. and a relative humidity of 50% for 30 days.
Dependencies are inferred from the claim text.