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US 2010/0060762 A1Published application
Photoelectric conversion apparatus and imaging system
AssigneeCanon Kabushiki Kaisha
InventorsHideaki Takada, Masanori Ogura, Hiroki Hiyama
Life of this patent
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Abstract
In a photoelectric conversion apparatus having a plurality of unit cells, wherein each of the unit cells has a photoelectric conversion element, a transfer transistor and a floating diffusion region, a light shielding portion arranged on an upper portion of the floating diffusion region is included. The respective light shielding portions are separated from one another, and are in a floating state without being electrically connected to the floating diffusion region.
Claims11
A photoelectric conversion apparatus comprising:
- a plurality of unit cells arranged, wherein each of the unit cells includes
- a photoelectric conversion element,
- a transfer transistor for transferring an electric charge generated in the photoelectric conversion element, and
- a floating diffusion region including a semiconductor region into which the electric charge is transferred by the transfer transistor, wherein
- the unit cell has a light shielding portion above the floating diffusion region, and
- the light shielding portions of the plurality of unit cells are separated from one another, and are in a floating state without being electrically connected to the floating diffusion region.
3 more elements
A photoelectric conversion apparatus comprising:
- a plurality of unit cells arranged, wherein each of the unit cells includes
- a plurality of photoelectric conversion elements,
- a plurality of transfer transistors, arranged correspondingly to each of the plurality of photoelectric conversion elements, transferring electric charge generated in the plurality of photoelectric conversion elements,
- a plurality of semiconductor regions into each of which the electric charge is transferred by the transfer transistor, comprising a floating diffusion region, and
- an amplifying transistor having a gate electrode electrically connected to the plurality of semiconductor regions;
- each of color filters is arranged correspondingly to each of the plurality of the photoelectric conversion elements;
- and
- a plurality of wirings, wherein
- the unit cell has a light shielding portion above the floating diffusion region, and
- the light shielding portions of the plurality of unit cells are separated from one another, formed from the same material as that of the plurality of wirings, and in a floating state without being electrically connected to the floating diffusion region.
7 more elements
Dependencies are inferred from the claim text.