Polarizing Plate, Polarizing Plate-Carrier Film Laminate, Method for Preparing Polarizing Plate-Carrier Film Laminate, Method for Preparing Polarizing Plate, and Active Energy Ray Curable Composition
AssigneeLG Chem, Ltd.
InventorsMi So Lee, Yoonkyung Kwon, Jin Woo Kim, Dong Uk Kim
Life of this patent
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Abstract
A polarizing plate and a polarizing plate-carrier film laminate are provided. A method for manufacturing a polarizing plate-carrier film laminate and a method for manufacturing a polarizing plate using the same polarizing plate-carrier film laminate are also provided. An active energy ray curable composition for a polarizing plate protective layer is also provided.
Claims17
A polarizing plate comprising:
- a polarizer;
- a bonding agent layer and a protective film sequentially provided on one surface of the polarizer;
- and
- a protective layer which is directly attached to the other surface of the polarizer,
- wherein the protective layer is a resin layer comprising an active energy ray curable composition comprising a bisphenol F-type epoxy compound, an oxetane compound, a polyol compound, and an epoxy compound which does not contain an aromatic ring, or a cured product thereof;
- and
- wherein the active energy ray curable composition includes 15 to 40 parts by weight of the bisphenol F-type epoxy compound, 30 to 80 parts by weight of the oxetane compound, and 1 to 20 parts by weight of the polyol compound based on 100 parts by weight of the epoxy compound which does not contain an aromatic ring.
A method for manufacturing a polarizing plate-carrier film laminate, comprising:
- supplying a carrier film to a first surface of a polarizer;
- supplying a protective film to a second surface of the polarizer;
- forming a protective layer by supplying an active energy ray curable composition between the polarizer and the carrier film;
- forming a bonding agent layer by supplying a photocurable bonding agent composition between the polarizer and the protective film;
- pressurizing a laminate in which the carrier film, the protective layer, the polarizer, the bonding agent layer, and the protective film are sequentially laminated by disposing a pair of pressurization means on each surface of the carrier film and the protective film;
- and
- curing the protective layer and the bonding agent layer by irradiating the protective layer and the bonding agent layer with an active energy ray.
An active energy ray curable composition for a polarizing plate protective layer, comprising, a bisphenol F-type epoxy compound, an oxetane compound, a polyol compound, and an epoxy compound which does not contain an aromatic ring, and
- wherein the active ray curable composition includes 15 to 40 parts by weight of the bisphenol F-type epoxy compound, 30 to 80 parts by weight of the oxetane compound, and 1 to 20 parts by weight of the polyol compound based on 100 parts by weight of the epoxy compound which does not contain an aromatic ring.
Dependencies are inferred from the claim text.