Image sensing device and camera
AssigneeCanon Kabushiki Kaisha
InventorTakehiko Soda
Life of this patent
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Abstract
An image sensing device includes a plurality of photoelectric conversion portions. The device further includes a semiconductor substrate having a first surface for receiving incident light and a second surface on an opposite side to the first surface, the photoelectric conversion portions being provided therein, a first non-metal region arranged on a second surface side and arranged at a position at least partially overlapping with the photoelectric conversion portions, a second non-metal region arranged to be in contact with a side surface of the first non-metal region, and a reflection layer arranged on an opposite side of the first non-metal region to the semiconductor substrate. A refractive index of the first non-metal region is higher than a refractive index of the second non-metal region.
Claims16
An image sensing device comprising:
- a plurality of photoelectric conversion portions;
- a semiconductor substrate having a first surface for receiving incident light and a second surface on an opposite side to the first surface, said plurality of photoelectric conversion portions being provided therein;
- a first non-metal region arranged on a second surface side of said semiconductor substrate and arranged at a position at least partially overlapping with said plurality of photoelectric conversion portions;
- a second non-metal region arranged to be in contact with a side surface of said first non-metal region;
- and
- a reflection layer arranged on an opposite side of said first non-metal region to said semiconductor substrate,
- wherein a refractive index of said first non-metal region is higher than a refractive index of said second non-metal region.
An image sensing device comprising:
- a plurality of photoelectric conversion portions;
- a semiconductor substrate having a first surface for receiving incident light and a second surface on an opposite side to the first surface, said plurality of photoelectric conversion portions being provided therein;
- a first insulating layer arranged on a second surface side of said semiconductor substrate and arranged at a position at least partially overlapping with said plurality of photoelectric conversion portions;
- a second insulating layer arranged to be in contact with a side surface of said first insulating layer;
- and
- a reflection layer arranged on an opposite side of said first insulating layer to said semiconductor substrate,
- wherein a refractive index of said first insulating layer is higher than a refractive index of said second insulating layer.
Dependencies are inferred from the claim text.