Patent ID: 8686337

Claim:
A solid-state imaging device comprising: a plurality of photoelectric conversion units, which are disposed so as to be arrayed in each of a first direction and a second direction orthogonal to said first direction of an imaging face of a substrate, configured to receive incident light at a light-receiving surface to generate signal charge; a plurality of micro lenses, which are disposed in each of said first direction and said second direction above each light-receiving surface of said plurality of photoelectric conversion units, configured to focus said incident light onto said light-receiving surface; and a transfer unit, which is provided for each column of said plurality of photoelectric conversion units arrayed in said second direction of said plurality of photoelectric conversion units, where a transfer channel region configured to transfer signal charge generated at this photoelectric conversion unit in said second direction is formed on said imaging face; wherein said plurality of micro lenses of which a planar shape of said imaging face is a shape including a portion divided by a side extending in said first direction and a side extending in said second direction are disposed so as to be arrayed mutually adjacent to each of said first direction and said second direction; wherein said plurality of micro lenses are formed so that (i) the depth of a groove between micro lenses arrayed in a third direction inclined in said first direction and said second direction of said imaging face is deeper than the depth of a groove between micro lenses arrayed in said first direction, (ii) the depth of a groove between micro lenses arrayed in said second direction is deeper than the depth of a groove between micro lenses arrayed in said first direction, (iii) the curvature of the lens surface in said second direction is formed so as to be higher than the curvature of the lens surface in said first direction, and (iv) the curvature of the lens surface in said third direction is higher than the curvature of the lens surface in said first direction, wherein the depths of the grooves between micro lenses are measured as a distance between the lens center and the lens edge portion in a depth direction, a depth D 1 of a groove between micro lenses arrayed in said first direction and a depth D 3 of a groove between micro lenses arrayed adjacent to said third direction have a relation of D 1 :D 3 =1:3 to 5, and the depth D 1 of a groove between micro lenses arrayed in said first direction has a relation of D 1 â‰¦150 nm.