Patent ID: 7939825
Filing Date: 2011-05-10
Classification: H01L

Abstract:
1. A solid-state image pickup device photoelectrically converting light incident on a back surface of a semiconductor substrate into signal charges to image an object, the solid-state image pickup device comprising: a light receiving unit provided on side of a front surface of said semiconductor substrate in said semiconductor substrate, said light receiving unit forming a PN junction diode with said semiconductor substrate and receiving said signal charges produced by the photoelectric conversion, said front surface being opposite to said back surface, said semiconductor substrate having a first conductivity type, and a region between said light receiving unit and said back surface is free of a second conductivity type; a light shielding film provided over said front surface of the semiconductor substrate so as to cover the light receiving unit, said light shielding film being provided to prevent light incident on said front surface from the outside of the solid-state image pickup device; and a MOS transistor formed adjacently to said light receiving unit, wherein said light shielding film covers whole area where said light receiving unit is provided, and said light shielding unit runs parallel to said back surface and is equidistant from said back surface along said light shielding unit's entire length.