| 摘要 |
The purpose of the present invention is to provide an optical film which is capable of suppressing panel bending, thereby decreasing display unevenness caused by panel bending. An optical film according to the present invention contains: a resin (A) that has a CHE/CTE of 0.6 or more, if CHE is the coefficient of moisture-absorption expansion thereof and CTE is the coefficient of thermal expansion thereof, and a tensile modulus of elasticity of 2GPa or more in an environment at 40°C at 20% RH; and a resin (B) that has a CHE/CTE of less than 0.6. The ratio of the coefficient of moisture-absorption expansion (CHE) of the optical film in an arbitrary in-plane direction (X) to the coefficient of thermal expansion (CTE) thereof in the direction (X), namely CHE/CTE is 0.6 or less, and the tensile modulus of elasticity in the direction (X) in an environment at 40°C at 20% RH is 2-6 GPa. |
