Adhesive film, adhesive composition for the same, and display member including the same
AssigneeSamsung SDI Co., Ltd.
InventorsKi Yong Kim, Ik Hwan Cho, Lee June Kim, Chan Woo Kim, In Cheon Han
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Abstract
An adhesive film includes a cured product of a (meth)acrylic copolymer and has a refractive index from about 1.5 to about 1.6. An adhesive composition for preparing the adhesive film includes a (meth)acrylic copolymer of a monomer mixture. A display member includes the adhesive film coated on one or more surfaces of an optical film.
Claims14
An adhesive film, comprising a cured reaction product of an adhesive composition, the adhesive composition comprising a (meth)acrylic copolymer of a monomer mixture, and the adhesive film having a refractive index of about 1.5 to about 1.6,
- wherein the (meth)acrylic copolymer has a glass transition temperature (Tg) of about −50° C. to about −5° C.,
- wherein the adhesive film has an average dielectric constant of less than 3,
- wherein the monomer mixture comprises one or more monomers having at least two aromatic groups, one or more (meth)acrylate monomers having a C1 to C20 alkyl group, one or more (meth)acrylate monomers having an alicyclic group, and one or more monomers having a hydroxy group,
- wherein the one or more monomers having at least two aromatic groups comprises at least one of phenoxybenzyl (meth)acrylate and phenylphenoxyethyl (meth)acrylate
- and
- wherein the monomer mixture comprises a total amount of about 10 wt % to about 50 wt % of the one or more (meth)acrylate monomers having a C1 to C20 alkyl group, a total amount of about 1 wt % to about 8 wt % of the one or more (meth)acrylate monomers having an alicyclic group, a total amount of about 15 wt % to about 30 wt % of the one or more monomers having a hydroxy group, and a total amount of about 20 wt % to about 50 wt % of the one or more monomers having at least two aromatic groups, each based on a total weight of the monomer mixture.
An adhesive composition comprising a (meth)acrylic copolymer of a monomer mixture, the monomer mixture comprising a total amount of about 10 wt % to about 50 wt % of one or more (meth)acrylate monomers having a C1 to C20 alkyl group, a total amount of about 15 wt % to about 30 wt % of one or more monomers having a hydroxy group, a total amount of about 20 wt % to about 50 wt % of one or more monomers having at least two aromatic groups, and a total amount of about 1 wt % to about 8 wt % of one or more (meth)acrylate monomers having an alicyclic group, each based on a total weight of the monomer mixture,
- wherein the (meth)acrylic copolymer has a glass transition temperature (Tg) of about −50° C. to about −5° C.,
- wherein an adhesive film formed from the adhesive composition has an average dielectric constant of less than 3,
- wherein the one or more monomers having at least two aromatic groups comprises at least one of phenoxybenzyl (meth)acrylate and phenylphenoxyethyl (meth)acrylate
Dependencies are inferred from the claim text.