Patent ID: 9536916
Date: 2017-01-03
CPC Classifications: H01L

Claim:
1. An image sensor comprising: a first light sensing layer comprising first pixels configured to absorb and detect light of a first wavelength band and transmit light of a second wavelength band and light of a third wavelength band; a second light sensing layer disposed to face the first light sensing layer, the second light sensing layer comprising second pixels configured to detect light of the second wavelength band and third pixels configured to detect light of the third wavelength band; and color separation elements disposed between the first light sensing layer and the second light sensing layer, the color separation elements being configured to direct the light of the second wavelength band toward the second pixels, and direct the light of the third wavelength band toward the third pixels, and each of the color separation elements being symmetric in at least four directions parallel to a surface of the second light sensing layer.