Patent ID: 6903391
Filing Date: 2005-06-07
Classification: H01L

Abstract:
1. A solid state image pickup device comprising: a semiconductor substrate defining light receiving areas; a number of pixels formed in said light receiving areas of said semiconductor substrate, each pixel including a high sensitivity photoelectric conversion element and a low sensitivity photoelectric conversion element; a light shielding film formed above said light receiving areas and having an opening above each pixel, said opening exposing at least a partial area of said high sensitivity photoelectric conversion element and at least a partial area of said low sensitivity photoelectric conversion element; an on-chip micro lens formed above each opening of said light shielding film, said on-chip micro lens converging incidence light; and an inner lens formed between said light shielding film and said on-chip micro lens and above said opening, said inner lens being disposed so that said inner lens receives light converged by said on-chip micro lens, excluding a portion of said light, and further converges the received light to make said portion of said light propagate toward said opening without passing through said inner lens.