Patent ID: 9651794
Date: 2017-05-16
CPC Classifications: G02B,G02F,Y10T

Claim:
1. A color filter, comprising a first pixel region corresponding to light within a first waveband and a second pixel region corresponding to light within a second waveband different from the first waveband, wherein, the color filer comprises a first film and a second film which are vertically stacked, the first film comprises a first dielectric film for reflecting the light within the first waveband and transmitting light within wavebands except the first waveband and a polarization-separation film arranged in a same layer with the first dielectric film, and the second film comprises a second dielectric film for reflecting the light within the second waveband and transmitting light within wavebands except the second waveband and a polarization-separation film arranged in a same layer with the second dielectric film; the polarization-separation films in the first and second films reflect light in a first polarization direction and transmitting light in a second polarization direction; the polarization-separation film in the first film is disposed in the first pixel region, and the first dielectric film is disposed in all other regions than the first pixel region; the polarization-separation film in the second film is disposed in the second pixel region, and the second dielectric film is disposed in all other regions than the second pixel region; and each of the first dielectric film and the second dielectric film comprises a first dielectric layer and a second dielectric layer which are vertically alternated and stacked, the polarization-separation films in the first film and the second film comprise isotropic layers and anisotropic layers which are vertically alternated and stacked, and the isotropic layer is the second dielectric layer.