Patent ID: 9455291
Filing Date: 2016-09-27
CPC Classification: H01L

Claim Text:
1. A back side illuminated image sensor comprising: a semiconductor material having a front side and a back side; image sensor circuitry and a light filter array, wherein the semiconductor material is disposed between the image sensor circuitry and the light filter array, and wherein the image sensor circuitry is disposed on the front side of the semiconductor material and the light filter array is disposed proximate to the back side of the semiconductor material; a first pixel including: a second pixel including a third doped region disposed in the semiconductor material, wherein the third doped region extends from the image sensor circuitry into the semiconductor material a second depth; a plurality of the first doped region, the second doped region, and the third doped region; a first light filter in the light filter array which permits the passage of blue light and red light and is optically aligned with at least one of the second doped regions in the plurality of second doped regions; a second light filter in the light filter array which permits the passage of blue light and green light and excludes red light and is optically aligned with at least another one of the second doped regions in the plurality of second doped regions; and a third light filter in the light filter array which permits the passage of blue light and is optically aligned with at least one of the third doped regions in the plurality of third doped regions.