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OwnerChang Yun, Moon Park +2inventors
InventorsChang Yun, Moon Park, In Han, Hyun Cho
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An acrylic adhesive composition, an optical film and a liquid crystal display using the same, wherein the acrylic adhesive composition has excellent impact resistance, which improves resistance to external impact of an optical film, increases the wide viewing angle and brightness of an image display, such as a liquid crystal display, and increases durability of the optical film under heat and moist heat conditions. The acrylic adhesive composition having excellent impact resistance includes (a) 100 parts by weight of an acrylic copolymer, (b) 0.01˜10 parts by weight of a crosslinking agent, and (c) 0.5˜20 parts by weight of a polymer having an amino group, the acrylic copolymer being obtained by copolymerizing (1) 0.5˜10 wt % of a vinylic monomer having no carboxyl group, (2) 0.5˜20 wt % of a vinylic monomer having a carboxyl group, and (3) a balance of a (meth)acrylic acid ester monomer having a C1˜C12 alkyl group.
An acrylic adhesive composition, comprising (a) 100 parts by weight of an acrylic copolymer, (b) 0.01˜10 parts by weight of a crosslinking agent, and (c) 0.5˜20 parts by weight of a polymer having an amino group, the acrylic copolymer being obtained by copolymerizing (1) 0.5˜10 wt % of a vinylic monomer having no carboxyl group, (2) 0.5˜20 wt % of a vinylic monomer having a carboxyl group, and (3) a balance of a (meth)acrylic acid ester monomer having a C1˜C12 alkyl group.
An optical film, comprising a liquid crystal polymer film layer and a polarizing plate layer laminated on either or both of upper and lower surfaces of the liquid crystal polymer film layer, wherein an adhesive layer is applied on either or both of upper and lower surfaces of at least one layer of layers constituting the optical film using the acrylic adhesive composition, comprising (a) 100 parts by weight of an acrylic copolymer, (b) 0.01˜10 parts by weight of a crosslinking agent, and (c) 0.5˜20 parts by weight of a polymer having an amino group, and the acrylic copolymer being obtained by polymerizing (1) 0.5˜10 wt % of a vinylic monomer having no carboxyl group, (2) 0.5˜20 wt % of a vinylic monomer having a carboxyl group, and (3) a balance of a (meth)acrylic acid ester monomer having a C1˜C12 alkyl group.
A liquid crystal display, comprising an optical film which includes a liquid crystal polymer film layer and a polarizing plate layer laminated on either or both of upper and lower surfaces of the liquid crystal polymer film layer, wherein an adhesive layer is applied on either or both of upper and lower surfaces of at least one layer of layers constituting the optical film using the acrylic adhesive composition, comprising (a) 100 parts by weight of an acrylic copolymer, (b) 0.01˜10 parts by weight of a crosslinking agent, and (c) 0.5˜20 parts by weight of a polymer having an amino group, and the acrylic copolymer being obtained by copolymerizing (1) 0.5˜10 wt % of a vinylic monomer having no carboxyl group, (2) 0.5˜20 wt % of a vinylic monomer having a carboxyl group, and (3) a balance of a (meth)acrylic acid ester monomer having a C1˜C12 alkyl group.
Dependencies are inferred from the claim text.