Patent ID: 9726798
Date: 2017-08-08
CPC Classifications: C09K,G02B

Claim:
1. An optical film comprising: a positive A-plate A-0; and a positive C-plate, wherein Re(450) which is an in-plane retardation value measured at a wavelength of 450 nm, Re(550) which is an in-plane retardation value measured at a wavelength of 550 nm, and Re(650) which is an in-plane retardation value measured at a wavelength of 650 nm, of the positive A-plate A-0 satisfy a relationship of Re(450)≦Re(550)≦Re(650), the positive A-plate A-0 is formed of a cured product of a composition including a reverse wavelength dispersion liquid crystal compound A0, the positive C-plate is formed of a cured product of a composition including a liquid crystal compound C, the liquid crystal compound A0 is a polymerizable rod-shaped liquid crystal compound, and the liquid crystal compound A0 is fixed in a homogeneous alignment state in the positive A-plate A-0.