Optical film and method of manufacturing the same
First Claim
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1. An optical film comprising:
- a first acrylic resin including one or more copolymers selected from the group consisting of a copolymer of an acrylic monomer, an aromatic vinyl monomer and an acid anhydride represented by Formula 2; and
a copolymer of an acrylic monomer, an aromatic vinyl monomer, an acrylonitrile monomer and an acid anhydride represented by Formula 2; and
20 to 65 parts by weight of a graft copolymer comprising a conjugated diene rubber based on 100 parts by weight of the first acrylic resin,wherein the graft copolymer is a graft copolymer of a conjugated diene rubber and a second acrylic resin for the graft copolymer,wherein the graft copolymer has a core-shell structure in which the conjugated diene rubber constitutes a core and the second acrylic resin for the graft copolymer constitutes a shell,wherein a weight ratio of the conjugated diene rubber and the second acrylic resin for the graft copolymer is in the range of 10 to 50;
90 to 50,wherein the optical film has an in-plane retardation value and a thickness retardation value of 0 to 10 nm before stretching, andwherein the optical film has an in-plane retardation value and a thickness retardation value of 80 to 200 nm after stretching,
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Abstract
The present invention provides an optical film and a retardation film that each include an acryl resin, and 20 to 65 parts by weight of a graft copolymer including a conjugated diene rubber based on 100 parts by weight of the acryl resin, and an electronic device including the same.
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Citations
9 Claims
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1. An optical film comprising:
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a first acrylic resin including one or more copolymers selected from the group consisting of a copolymer of an acrylic monomer, an aromatic vinyl monomer and an acid anhydride represented by Formula 2; and
a copolymer of an acrylic monomer, an aromatic vinyl monomer, an acrylonitrile monomer and an acid anhydride represented by Formula 2; and20 to 65 parts by weight of a graft copolymer comprising a conjugated diene rubber based on 100 parts by weight of the first acrylic resin, wherein the graft copolymer is a graft copolymer of a conjugated diene rubber and a second acrylic resin for the graft copolymer, wherein the graft copolymer has a core-shell structure in which the conjugated diene rubber constitutes a core and the second acrylic resin for the graft copolymer constitutes a shell, wherein a weight ratio of the conjugated diene rubber and the second acrylic resin for the graft copolymer is in the range of 10 to 50;
90 to 50,wherein the optical film has an in-plane retardation value and a thickness retardation value of 0 to 10 nm before stretching, and wherein the optical film has an in-plane retardation value and a thickness retardation value of 80 to 200 nm after stretching, - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification