Patent ID: 9229142
Filing Date: 2016-01-05
CPC Classification: G02B,G02F

Claim Text:
1. An optical film comprising: a first optically anisotropic layer; and a second optically anisotropic layer on the surface of the first optically anisotropic layer, wherein the first optically anisotropic layer is a layer of liquid crystal compounds which are aligned and fixed by polymerization, wherein the surface tilt angle of the liquid crystal compounds is in a range of 5° to 80° at a site in contact with the second optically anisotropic layer, and wherein the sum of an Re value of the first optically anisotropic layer and an Re value of the second optically anisotropic layer is in a range of −75 nm to 25 nm, each Re value indicating an in-plane retardation at a wavelength of 550 nm and being measured with reference to a slow axis of the first optically anisotropic layer.