| abstract |
(57) [Summary] [Object] To provide a polarizing plate having good resistance to moisture and heat such as no deterioration under high temperature and high humidity and excellent dimensional stability, and having high productivity. A polarizing plate comprising a polarizing film and a protective film having a thickness of 50 μm or more on at least one surface of the polarizing film, wherein the protective film is a cellulose ester film containing a plasticizer, and the protective film Depth 1 from the surface of the membrane The plasticizer content of the surface layer in the range of 0 μm is 3 to A polarizing plate, characterized in that it is 9% by weight and the average concentration of the plasticizer in the entire protective film is in the range of 11 to 18% by weight. |