Abstract: A method for producing a polarizing film includes (1) preparing a laminate (a) which includes a carrier film and a polarizer with a thickness of 10 ?m or less formed on one surface of the carrier film and contains a polyvinyl alcohol-based resin; (2) peeling off the carrier film from the laminate (a); and (3) applying a liquid material to a side of the laminate (a) from which the carrier film has been peeled off and then solidifying or curing the liquid material to form a transparent resin layer with a thickness of 0.2 ?m or more, wherein the liquid material contains a resin component or a curable component capable of forming a resin layer. This production method enables the achievement of a polarizing film which is able to have satisfactory durability in a heated environment even in cases where a thin polarizer is used therefor.

Abstract: A method for producing a polarizing film includes (1) preparing a laminate (a) which includes a carrier film and a polarizer with a thickness of 10 ?m or less formed on one surface of the carrier film and contains a polyvinyl alcohol-based resin; (2) peeling off the carrier film from the laminate (a); and (3) applying a liquid material to a side of the laminate (a) from which the carrier film has been peeled off and then solidifying or curing the liquid material to form a transparent resin layer with a thickness of 0.2 ?m or more, wherein the liquid material contains a resin component or a curable component capable of forming a resin layer. This production method enables the achievement of a polarizing film which is able to have satisfactory durability in a heated environment even in cases where a thin polarizer is used therefor.

Abstract: It is an object of the present invention to provide a polarizing plate which can suppress display unevenness and yellow discoloration even when being applied to a liquid crystal panel and prevent a change in oblique hue, and a liquid crystal display device including the polarizing plate. A polarizing plate includes: a polyvinyl alcohol-based polarizer; a transparent protective film provided on one surface of the polyvinyl alcohol-based polarizer with an adhesive layer interposed therebetween; and a retardation film provided on the other surface of the polarizer with an adhesive layer interposed therebetween. The transparent protective film contains a (meth)acrylic resin and an ultraviolet absorber. The retardation film contains a cellulose resin and has an in-plane retardation of 5 nm or less and a thickness-direction retardation of 10 nm or less.

Abstract: An optical film that includes an optical compensation layer having a refractive index anisotropy satisfying nx>ny>nz. The optical compensation layer contains a polyvinyl alcohol resin subjected to ultraviolet cross-linking with a cross-linking agent having at least two double bonds, where nx: a refractive index in a direction (a slow axis direction) in which an in-plane refractive index of the optical compensation layer reaches its maximum ny: a refractive index in a direction (a fast axis direction) that is orthogonal to the nx direction within a plane of the optical compensation layer nz: a refractive index in a thickness direction of the optical compensation layer that is orthogonal to each of the nx and ny directions. The optical film has a high retardation developability and high retardation reliability, uses a material that is inexpensive as compared to polyimide and has a wide choice of solvents.