Semiconductor device manufacturing: process – Making device or circuit responsive to nonelectrical signal
Reexamination Certificate
2009-02-13
2010-06-22
Vu, Hung (Department: 2811)
Semiconductor device manufacturing: process
Making device or circuit responsive to nonelectrical signal
C438S098000
Reexamination Certificate
active
07741141
ABSTRACT:
A photodiode having an increased proportion of light-sensitive area to light-insensitive area includes a semiconductor having a backside surface and a light-sensitive frontside surface. The semiconductor includes a first active layer having a first conductivity, a second active layer having a second conductivity opposite the first conductivity, and an intrinsic layer separating the first and second active layers. A plurality of isolation trenches are arranged to divide the photodiode into a plurality of cells. Each cell has a total frontside area including a cell active frontside area sensitive to light and a cell inactive frontside area not sensitive to light. The cell active frontside area forms at least 95 percent of the cell total frontside area. A method of forming the photodiode is also disclosed.
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Brogan Conor
Griffin Hugh J.
MacNamara Cormac
Wilson Robin
Icemos Technology Ltd.
Panitch Schwarze Belisario & Nadel LLP
Vu Hung
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