Patent ID: 8629385
Filing Date: 2014-01-14
Classification: H01L

Abstract:
1. A solid-state imaging element comprising: (A) a light reception/charge storage region in a semiconductor layer, the light reception/charge storage region including (i) M light reception/charge storage layers stacked one on top of the other, where M≧2, and (ii) m potential control electrodes to control the potentials of the light reception/charge storage layers, where 1≦m≦(M−I); (B) a charge output region in the semiconductor layer; (C) a conduction/non-conduction control region which includes a portion of the semiconductor layer located between the light reception/charge storage region and the charge output region; (D) a conduction/non-conduction control electrode adapted to control the conduction or non-conduction state of the conduction/non-conduction control region; (E) an insulating film between the conduction/non-conduction control region and the conduction/non-conduction control electrode; and (F) a coating layer between the insulating film and a surface of one of the M light reception/charge storage layers, the coating layer being connected to the conduction/nonconduction control region, the coating layer including a semiconductor material containing an impurity different in conductivity type from at least one of light reception/charge storage layers, wherein, mth potential control electrodes are provided between the mth and (m+1)th light reception/charge storage layer to control the potentials of the light reception/charge storage layers, mth being an ordinal number.