Active solid-state devices (e.g. – transistors – solid-state diode – Heterojunction device – Light responsive structure
Reexamination Certificate
2007-05-15
2007-05-15
Louie, Wai-Sing (Department: 2814)
Active solid-state devices (e.g., transistors, solid-state diode
Heterojunction device
Light responsive structure
C257S184000, C257S192000, C257S222000, C257S291000
Reexamination Certificate
active
11340180
ABSTRACT:
A solid-state image pickup device includes an element isolation insulating film electrically isolating pixels on the surface of a well region; a first isolation diffusion layer electrically isolating the pixels under the element isolation insulating film; and a second isolation diffusion layer electrically isolating the pixels under the first isolation diffusion layer, wherein a charge accumulation region is disposed in the well region surrounded by the first and second isolation diffusion layers, the inner peripheral part of the first isolation diffusion layer forms a projecting region, an impurity having a conductivity type of the first isolation diffusion layer and an impurity having a conductivity type of the charge accumulation region are mixed in the projecting region, and a part of the charge accumulation region between the charge accumulation region and the second isolation diffusion layer is abutted or close to the second isolation diffusion layer under the projecting region.
REFERENCES:
patent: 5252851 (1993-10-01), Mita et al.
patent: 6211509 (2001-04-01), Inoue et al.
Abe Hideshi
Furukawa Masakazu
Masagaki Atsushi
Ohashi Masanori
Tatani Keiji
Depke Robert J.
Louie Wai-Sing
Rockey, Depke, Lyons & Kitzinger LLC.
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