Patent ID: 7413923
Filing Date: 2008-08-19
Classification: H01L

Abstract:
1. A method for manufacturing a CMOS (complementary metal oxide semiconductor) image sensor, comprising: forming an interlayer insulating layer on a surface of a semiconductor substrate having at least one photodiode and a transistor; forming a color filter layer above the interlayer insulating layer; forming a planarizing layer on the color filter layer; applying a first photoresist on the planarizing layer; patterning the first photoresist using a first mask to form a microlens pattern; reflowing the microlens pattern to form dome-shaped microlenses; applying a second photoresist on the resulting substrate including the microlenses; patterning the second photoresist using a second mask to form a second photoresist pattern on top portions of the microlenses; and selectively removing edge portions of the microlenses using the second photoresist pattern as a mask.