Abstract: A polarizing plate of the present invention includes a polyvinyl alcohol-based polarizer and transparent protective films provided on both sides of the polarizer with an adhesive layer interposed between the polarizer and each transparent protective film, wherein the transparent protective films each comprise a lactone ring structure-containing (meth)acrylic resin, each one of the transparent protective films has a thickness T1 (?m) of 10 to 35 ?m, and the polarizer has a thickness T2 (?m) which satisfies that the ratio (T2/T1) of T2 to the thickness T1 of each one of the transparent protective films falls within the range of 0.8 to 1.8. The polarizing plate is designed to be thin and can satisfy durability.

Abstract: A polarizing plate of the present invention includes a polyvinyl alcohol-based polarizer; and transparent protective films provided on both sides of the polarizer with an adhesive layer interposed between the polarizer and each transparent protective film, wherein the transparent protective film on one side comprises a lactone ring structure-containing (meth)acrylic resin and has an in-plane retardation of less than 40 nm and a thickness direction retardation of less than 80 nm, and the transparent protective film on the other side is a retardation plate that comprises a cellulose ester and satisfies the relation: nx>ny>nz, wherein nx is a refractive index in an X-axis direction where the in-plane refractive index is maximum, ny is a refractive index in a Y-axis direction perpendicular to the X-axis, and nz is a refractive index in a Z-axis direction corresponding to the thickness direction. The polarizing plate can satisfy durability and display uniformity (unevenness).

Abstract: A polarizing plate of the present invention includes a polyvinyl alcohol-based polarizer; and transparent protective films provided on both sides of the polarizer with an adhesive layer interposed between the polarizer and each transparent protective film, wherein the transparent protective film on one side comprises a lactone ring structure-containing (meth)acrylic resin and has an in-plane retardation of less than 40 nm and a thickness direction retardation of less than 80 nm, and the transparent protective film on the other side is a retardation plate that comprises a cellulose ester and satisfies the relation: nx>ny>nz, wherein nx is a refractive index in an X-axis direction where the in-plane refractive index is maximum, ny is a refractive index in a Y-axis direction perpendicular to the X-axis, and nz is a refractive index in a Z-axis direction corresponding to the thickness direction. The polarizing plate can satisfy durability and display uniformity (unevenness).

Abstract: A polarizing plate of the present invention includes a polyvinyl alcohol-based polarizer and transparent protective films provided on both sides of the polarizer with an adhesive layer interposed between the polarizer and each transparent protective film, wherein the transparent protective films each comprise a lactone ring structure-containing (meth)acrylic resin, each one of the transparent protective films has a thickness T1 (?m) of 10 to 35 ?m, and the polarizer has a thickness T2 (?m) which satisfies that the ratio (T2/T1) of T2 to the thickness T1 of each one of the transparent protective films falls within the range of 0.8 to 1.8. The polarizing plate is designed to be thin and can satisfy durability.

Abstract: A method for producing a polarizing plate of the invention comprises bonding a transparent protective film (A) and another transparent protective film (B) to one side of a polarizer and to another side of the polarizer, respectively, with an adhesive, wherein the polarizer has a moisture content of 15 to 30% by weight, the transparent protective film (A) is made of the same quality material as the transparent protective film (B), the transparent protective film (A) is thicker than the transparent protective film (B), and the transparent protective film (A) has a moisture content higher than that of the transparent protective film (B). The polarizing plate obtained by the production method can suppress curling.

Abstract: A method for producing a polarizing plate of the invention comprises bonding a transparent protective film (A) and another transparent protective film (B) to one side of a polarizer and to another side of the polarizer, respectively, with an adhesive, wherein the polarizer has a moisture content of 15 to 30% by weight, the transparent protective film (A) is made of the same quality material as the transparent protective film (B), the transparent protective film (A) is thicker than the transparent protective film (B), and the transparent protective film (A) has a moisture content higher than that of the transparent protective film (B). The polarizing plate obtained by the production method can suppress curling.

Abstract: A polarizing plate of the invention comprises a polarizer; and a transparent protective film provided on at least one side of the polarizer with an adhesive layer interposed therebetween, wherein the adhesive layer is formed of an adhesive for polarizing plate comprising: a resin solution comprising a polyvinyl alcohol-based resin, a crosslinking agent and a colloidal metal compound with an average particle size of 1 nm to 100 nm, wherein 200 parts by weight or less of the colloidal metal compound is added to 100 parts by weight of the polyvinyl alcohol-based resin, and the transparent protective film provided on at least one side is a retardation plate having a front retardation of 40 nm or more and/or a thickness direction retardation of 80 nm or more. The polarizing plate can reduce the occurrence of knicks.