Patent · US Active

Systems and methods for imaging using single photon avalanche diodes

US9831283B2 · kind B2 · utility

61Cited by

2References

22Claims

0Family size

Assignee

The Trustees of Columbia University in the City of New York · US

Inventors

Kenneth L. Shepard · Johnstown, US
Ryan Field · Culver City, US

Key dates

Filing date	Apr 8, 2014
Grant date	Nov 28, 2017
Priority date	—
Expiry date	Dec 25, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG01N2021/6441
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Single-photon avalanche diode includes a central junction having a central p+ area and a deep-n well in contact with the central p+ area, a p-type guard ring disposed between the central junction and the deep-n well, and a shallow trench isolation separated from the central p+ area. Imaging apparatus includes a plurality of pixels, each pixel comprising a complementary metal-oxide-semiconductor-implemented single photon avalanche device and one or more signal converters electrically coupled thereto and configured to detect changes in output therefrom.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.