Patent ID: 6840635

Claim:
A method of producing a polarizer comprising: sticking two protective films to opposite surfaces of a polyvinyl alcohol polarizing element so that the polyvinyl alcohol polarizing element is held between said two protective films, wherein said two protective films are stuck under the condition that a moisture content of said polyvinyl alcohol polarizing element is adjusted to be not higher than 15% by weight, wherein moisture permeability of each of said protective films is in a range of from 5 to 300 (g/m 2 ·24 h) at 40° C.×90% R.H, wherein each of said protective films is a single layer film and is made of a resin selected from the group consisting of a polyester resin, a polyimide resin, a norbornene resin, and a polyolefin resin, and wherein a moisture content of said polarizer is not higher than 3% by weight.