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US 2025/0160032 A1Published application
Image sensor pixels having reduced pitch
AssigneesSTMicroelectronics (Research & Development) Limited, STMicroelectronics (Crolles 2) SAS
InventorsJeff M. RAYNOR, Frederic LALANNE, Pierre MALINGE
Life of this patent
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Abstract
The present disclosure relates to an image sensor that includes first and second pixels. One or more transistors of the first pixel share an active region with one or more transistors of the second pixel.
Claims20
A device, comprising:
- a substrate;
- a first active region in the substrate;
- a first pixel including:
- a first photodiode;
- a first transistor in the first active region;
- a second transistor in the first active region;
- and
- a second pixel including a second photodiode;
- a first isolation trench having a first depth and entirely surrounding the first active region;
- a second isolation trench having a second depth greater than the first depth and surrounding the first pixel and the second pixel;
- a third isolation trench extending between the first photodiode and the first active region;
- and
- a fourth isolation trench extending between the second photodiode and the first active region.
10 more elements
A device, comprising:
- a substrate;
- a first pixel including a first photodiode and a first plurality of transistors each in an active region in the substrate;
- and
- a second pixel including a second photodiode and a second plurality of transistors in the active region, the second active region extending continuously from the first pixel to the second pixel along a first direction;
- a first isolation trench in the substrate adjacent to the first and second pixels;
- a second isolation trench delimiting the second active region on all sides, the first isolation trench surrounding the active region and the second isolation trench;
- and
- a third isolation trench extending along the first direction, the third isolation trench being between the first photodiode and the first plurality of transistors.
5 more elements
A device, comprising:
- a substrate;
- a pixel in the substrate, the pixel including:
- a photodiode;
- a first plurality of transistors in an active region of the substrate;
- a first isolation trench entirely surrounding the active region;
- and
- a second isolation trench entirely surrounding the photodiode, the first plurality of transistors, and the first isolation trench, the second isolation trench including:
- a first portion entirely surrounding the photodiode and the first plurality of transistors;
- and
- a second portion delimiting a capacitor region adjacent to the first portion.
7 more elements
Dependencies are inferred from the claim text.