Adhesive film, optical member comprising the same, and optical display apparatus comprising the same
AssigneeSamsung SDI Co., Ltd.
InventorsJung Hyo Lee, Won Kim, Tae Ji Kim, Oh Hyeon Hwang, Il Jin Kim, Dong Heon Yun, Ji Hye Lee
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Abstract
An adhesive film, an optical member including the same, and an optical display apparatus including the same are provided. An adhesive film is formed of an adhesive composition including a (meth)acrylic copolymer, a curing agent, an aromatic group-containing mono- or higher functional monomer, and an initiator, and has a peel strength increase rate of 5.0 or more, as calculated according to Equation 1 herein.
Claims19
An adhesive film formed of an adhesive composition comprising a (meth)acrylic copolymer, a curing agent, an aromatic group-containing mono- or higher functional monomer, an initiator, and a curing accelerator,
- the adhesive film having a peel strength increase rate of 5.0 or more, as calculated by the following Equation 1:
- Peel strength increase rate=P2/P1,
- where P1 is an initial peel strength (unit:
- gf/inch) of the adhesive film with respect to an adherend, as measured on a specimen of the adhesive film and the adherend, and
- P2 is a peel strength of the adhesive film (unit:
- gf/inch) with respect to the adherend, as measured on the specimen of the adhesive film and the adherend after irradiation of the specimen with light,
- wherein the aromatic group-containing mono- or higher functional monomer comprises a compound of the following Formula 1:
- where R1 is hydrogen or a methyl group;
- s is an integer of 0 to 10;
- R2 is a substituted or unsubstituted C6 to C50 aryl group or an unsubstituted phenoxy group;
- and T is a substituted or unsubstituted C1 to C6 alkylene group or a substituted or unsubstituted C4 to C6 alkyleneoxy group, and
- wherein the adhesive film has a storage modulus of 50 kPa or less at 25° C. prior to being irradiated with light.
An adhesive film formed of an adhesive composition comprising a (meth)acrylic copolymer, a curing agent, an aromatic group-containing mono- or higher functional monomer, and an initiator,
- the adhesive film having an initial peel strength of greater than 0 gf/inch to about 100 gf/inch with respect to an adherend, as measured on a specimen of the adhesive film and the adherend, and a peel strength of 300 gf/inch or more with respect to the adherend, as measured on the specimen of the adhesive film and the adherend after irradiation of the specimen with light,
- wherein the aromatic group-containing mono- or higher functional monomer comprises a compound of the following Formula 1:
- where R1 is hydrogen or a methyl group;
- s is an integer of 0 to 10;
- R2 is a substituted or unsubstituted C6 to C50 aryl group;
- and T is a substituted or unsubstituted C1 to C6 alkylene group or a substituted or unsubstituted C4 to C6 alkyleneoxy group, and
- wherein the adhesive film has a storage modulus of 50 kPa or less at 25° C. prior to being irradiated with light.
Dependencies are inferred from the claim text.