Polarizing plate and image display including polarizing plate

Abstract

The invention relates to an extremely thin polarizing plate in which the appearance of irregularly shaped cracks in the treated area is prevented. The polarizing plate according to the invention consists of: a polarizing layer; and a protective layer arranged on at least one side of the polarizing layer, and having an irregular shape other than rectangular. The protective layer consists of a plastic film. The polar layer consists of a PVA-based plastic film containing amphoteric substances. According to one scheme, the polar layer satisfies expression (1) below when the single-layer transmission coefficient is represented by "x"% and the birefringence of the PVA-based plastic is represented by "y". According to another scheme, the polar layer satisfies expression (2) below when the single-layer transmission coefficient is represented by "x"%, and the slowing down in the plane of the PVA-based plastic film is represented by "z" nm. According to another option, the polar layer satisfies the following expression (3) when the single layer transmission coefficient is expressed by "xir%", and the orientation function of the PVA base resin is expressed by "Γ", According to another option, the polar layer has a puncture resistance of 30 gf / pm or greater. y<-0.01 lx+0.525 (1) z<' 60x+2.875 (2) f<-0.018x+1.11 (3)