Patent ID: 7135750

Claim:
A photodiode array comprising: a first photodiode comprising: a first active area; a first anti-reflective coating area; and a first residual polysilicon ring area, wherein the first anti-reflective coating area and the first residual polysilicon ring area are formed asymmetrically over the first active area; and at least a second photodiode adjacent to the first photodiode comprising: a second active area; a second anti-reflective coating area; and a second residual polysilicon ring area, wherein the second anti-reflective coating area and the second residual polysilicon ring area are formed asymmetrically over the second active area; wherein the first anti-reflective coating area is formed over a region of the first active region adjacent to the second photodiode, and the second anti-reflective coating area is formed over a region of the second active region adjacent to the first photodiode.