Patent ID: 9513421
Filing Date: 2016-12-06
CPC Classification: G02B

Claim Text:
1. An optical film comprising: a polarization layer; a first phase retardation layer; a second phase retardation layer; and a light blocking layer disposed between the first phase retardation layer and the second phase retardation layer and extending along a circumference of the second phase retardation layer to block light transmission at the circumference of the second phase retardation layer, wherein the polarization layer is disposed on the first phase retardation, the first phase retardation layer is disposed on the second phase retardation layer, an in-plane retardation value of the first phase retardation layer at a standard wavelength of about 550 nanometers is in a range from about 240 nanometers to about 300 nanometers, an in-plane retardation value of the second phase retardation layer at the standard wavelength is in a range from about 110 nanometers to about 160 nanometers, and an entire portion of an area surrounded by the light blocking layer allows light transmission between the first phase retardation layer and the second phase retardation layer.