Patent ID: 7223625

Claim:
A method of fabricating a complementary metal-oxide semiconductor image sensor, comprising: forming interlayer dielectrics on a plurality of photosensitive devices formed on a semiconductor substrate; forming a plurality of color filter layers on the interlayer dielectrics, each of the color filter layers facing into each photosensitive device; forming a planarization layer on the color filter layers; depositing a lens-forming material layer on the planarization layer; and injecting and dispersing ions onto the lens-forming material layer to form a micro-lens layer having a refractive index distribution, in which light is focused onto the photosensitive device facing thereto, wherein the ions are injected by using a mask layer, the mask layer having an opening corresponding to a center portion of the lens-forming material layer, and wherein the lens-forming material is patterned to have a rectangular shape.