Patent ID: 9507202
Filing Date: 2016-11-29
CPC Classification: B32B,C08B,C09K,G02B,G02F

Claim Text:
1. A polarization plate comprising: a first protective film; a polarizer; and a second protective film in this order, wherein the first protective film is a film including a (meth)acryl-based resin, a thickness of the first protective film is in a range of 20 μm to 30 μm, an elastic modulus of the first protective film in a direction orthogonal to an absorption axis of the polarizer is in a range of 3.0 GPa to 3.5 GPa, a thickness of the second protective film is in a range of 1.5 times to 1.8 times of the thickness of the first protective film, and a humidity dimensional change ratio of the second protective film in the direction orthogonal to the absorption axis of the polarizer, which is expressed by the following expression (1), is in a range of 0.45% to 0.8%, wherein a humidity dimensional change ratio of the first protective film in the direction orthogonal to the absorption axis of the polarizer, which is expressed by the above-described expression (1) is in a range of 0.20% to 0.30%, the transverse direction (TD) of the first protective film is the direction orthogonal to the absorption axis of the polarizer, and the TD direction of the second protective film is the direction orthogonal to the absorption axis of the polarizer.