Patent ID: 7217910

Claim:
A solid-state image pickup device comprising: a semiconductor substrate; a plurality of photoelectric conversion regions arranged on the semiconductor substrate, comprising: a plurality of first photoelectric conversion regions arranged in a row direction and a column direction orthogonal thereto on the semiconductor substrate; and a plurality of second photoelectric conversion regions arranged in the row direction and the column direction on the semiconductor substrate; and micro-lenses each of which overlies each of said plurality of first photoelectric conversion regions, wherein each of said plurality of second photoelectric conversion regions is located below a location between adjacent ones of the micro-lenses, each of first ones of the second photoelectric conversion regions in a peripheral area of a region in which said plurality of photoelectric conversion regions are arranged comprises a first opening having a size larger than that of a second opening of each of second ones of the second photoelectric conversion regions in a central area of the region in which said plurality of photoelectric conversion regions are arranged, a first ratio of (a) a length of each of the first ones of the second photoelectric conversion regions in a first direction with respect to its opening center to (b) a length of each of the second ones of the second photoelectric conversion regions in the first direction with respect to its opening center is larger than a second ratio of (c) a length of each of the first ones of the second photoelectric conversion regions in a second direction other than the first direction with respect to its opening center to (d) a length of each of the second ones of the second photoelectric conversion regions in the second direction with respect to its opening center; and among incidence directions of light coming in the second photoelectric conversion regions in a plan view of the semiconductor substrate, the first direction is a direction in which the light is cut off in the highest degree.