Patent ID: 6784014
Filing Date: 2004-08-31
Classification: H01L

Abstract:
An improved process for producing a solid-state imaging device comprising the steps of: forming a light-receiving portion of a pixel in a region of a substrate, forming a convex lens with an upwardly curved surface which is embedded in an inter-layer dielectric above said light-receiving portion, and forming an on-chip lens above said convex lens, wherein said improvement comprises forming sequentially said light-receiving portion, forming an inter-layer dielectric having a depression in its surface above said light-receiving portion, forming on said inter-layer dielectric a light transmitting film having in its surface a concave portion conforming to said depression, forming at a position that covers said concave portion on said light transmitting film a mask layer with a convexly curved surface without etching or planarizing the light transmitting film, and etching said mask layer and said light transmitting film all together, thereby making said light transmitting film into a lens.