Patent ID: 8471311
Filing Date: 2013-06-25
Classification: H01L

Abstract:
1. An anti-reflective image sensor comprising: a substrate; a plurality of first color sensing pixels disposed in the substrate; a plurality of second color sensing pixels disposed in the substrate; a plurality of third color sensing pixels disposed in the substrate; a first layer disposed directly on the pluralities of first, second and third color sensing pixels; a second layer disposed directly on the first layer overlying the pluralities of first, second and third color sensing pixels; and a third layer disposed directly on portions of the second layer overlying at least one of the pluralities of first or second color sensing pixels, wherein the first layer has a first refractive index, the second layer has a second refractive index greater than the first refractive index, and the third layer has a third refractive index greater than the second refractive index.