Patent ID: 9690025
Date: 2017-06-27
CPC Classifications: G02B

Claim:
1. A polarizer, wherein the polarizer is configured as being used in combination with a reflection layer, the polarizer comprises a polarizing layer and a compensation layer, the compensation layer is disposed between the polarizing layer and the reflection layer, wherein the compensation layer comprises a quarter-wave plate and an optical compensation film, the optical compensation film is disposed between the polarizing layer and the quarter-wave plate, the optical compensation film is made of a wave plate; a refractive index factor of the optical compensation film is in a range from 0.3 to 0.4, phase retardation is in a range from 240 nm to 300 nm, and an angle between a slow axis of the optical compensation film and a transmission axis of the polarizing layer is in a range from −5° to +5°; or a refractive index factor of the optical compensation film is in a range from 0.7 to 0.8, phase retardation is in a range from 240 nm to 300 nm, and an angle between a slow axis of the optical compensation film and a transmission axis of the polarizing layer is in a range from +85° to +95° or in a range from −95° to −85°.