Patent ID: 7547573

Claim:
A method of manufacturing an image sensor device, comprising: providing a semiconductor substrate comprising a pixel array region, a logic region, and an optical black region between the pixel array region and the logic region, the pixel array region and the optical black region each comprising a photo sensing unit array, and a plurality of isolation structures for isolating each of the photo-sensing units; forming a first planarized layer over the semiconductor substrate to cover the photo-sensing units; forming a patterned metal layer over the first planarized layer in the pixel array region and the logic region, and not above the first planarized layer in the optical black region; forming a second planarized layer over the semiconductor substrate to cover the patterned metal layer; forming an optical black layer above the second planarized layer above the photo-sensing units in the optical black region at a temperature less than 400° C.; forming a color filter array on the second planarized layer in the pixel array region; forming a third planarized layer on the optical black layer and the color filter array; forming a plurality of microlenses on the third planarized layer, wherein the microlenses are positioned correspondingly over the color filter array; and removing each layer over the patterned metal layer in the logic region to expose the patterned metal layer in the logic region to serve as a pad.