Adhesive sheet, adhesive composition therefor, optical member comprising same, and optical display device comprising same
AssigneeSamsung SDI Co., Ltd.
InventorsDo Young Kim, Il Jin Kim
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Abstract
Provided are an adhesive sheet, an adhesive composition therefor, an optical member comprising same, and an optical display device comprising same, wherein the adhesive sheet comprises an adhesive layer formed of an adhesive composition containing a hydroxyl group-containing (meth)acrylic copolymer, a photo-initiator, a photo-curable crosslinking agent, and a heat-curable crosslinking agent; the heat-curable crosslinking agent contains an isocyanate-type crosslinking agent and carboxyl group-containing (meth)acrylate; the adhesive layer has a peeling strength of about 600 gf/in or more relative to a glass substrate at 25° C. and has a surface energy of about 70 mN/m or more at 25° C.
Claims19
An adhesive sheet comprising:
- an adhesive layer formed of an adhesive composition comprising a hydroxyl group-containing (meth)acrylic copolymer, a photoinitiator, a photocurable crosslinking agent, and a thermosetting crosslinking agent,
- wherein the thermosetting crosslinking agent comprises an isocyanate group-containing crosslinking agent and a carboxyl group-containing (meth)acrylate,
- wherein the thermosetting crosslinking agent is present in an amount of about 0.001 parts by weight to less than about 2 parts by weight relative to 100 parts by weight of all of the hydroxyl group-containing (meth)acrylic copolymer and the photocurable crosslinking agent, and
- the adhesive layer has a peel strength of about 600 gf/in or more with respect to a glass plate at 25° C. and a surface energy of about 70 mN/m or more at 25° C.
An adhesive composition comprising:
- a hydroxyl group-containing (meth)acrylic copolymer, a photoinitiator, a photocurable crosslinking agent, and a thermosetting crosslinking agent,
- wherein the thermosetting crosslinking agent comprises an isocyanate group-containing crosslinking agent and a carboxyl group-containing (meth)acrylate, and is present in an amount of about 0.001 parts by weight to less than about 2 parts by weight relative to 100 parts by weight of all of the hydroxyl group-containing (meth)acrylic copolymer and the photocurable crosslinking agent.
Dependencies are inferred from the claim text.