光学フィルム及び画像表示装置

Japanese Patent JP6756112

B2

PROBLEM TO BE SOLVED: To simplify the structure and manufacturing process of an optical film including a phase difference layer functioning as an A plate while ensuring sufficient viewing angle characteristics, so as to improve its quality.SOLUTION: There is provided an optical film 10 having a phase difference layer 7 provided on a transparent base material 11, where the phase difference layer 7 is a single-layer phase difference layer formed of a polymerizable rod-like liquid crystal material, and when values at wavelengths of 450 nm and 550 nm of the NZ coefficient represented by using a front phase difference Re and a thickness phase difference Rth as NZ=Rth/Re+0.5 are NZ(450) and NZ(550), NZ(450)