Patent ID: 8334195
Filing Date: 2012-12-18
Classification: H01L

Abstract:
1. A method comprising: forming a plurality of imager sensors in a same substrate; forming a resist over the plurality of imager sensors; aligning a mask comprising a transparent region and a semi-transparent region over the resist such that the transparent region is aligned with at least one of the plurality of imager sensors that has a smaller pixel size and the semi-transparent region is aligned with at least one of the plurality of image sensors that has a larger pixel size; exposing the resist through the mask such that at least a first portion of the resist over the at least one of the plurality of imager sensors that has the smaller pixel size is completely dissolved and at least a second portion of the resist over the at least one of the plurality of image sensors that has the larger pixel size is partially dissolved; and providing a single dosage implant to the plurality of imager sensors, wherein the at least one of the plurality of imager sensors that has the smaller pixel size receives a higher dosage than the at least one of the plurality of imager sensors that has the larger pixel size.