Title:
SOLID-STATE IMAGING ELEMENT AND IMAGING DEVICE
Document Type and Number:
Japanese Patent JP2021016069
Kind Code:
A
Abstract:
To provide a high-sensitivity solid-state imaging element and imaging device that can reduce photon counting in single photon counting.SOLUTION: A solid-state imaging element includes, for each pixel, a photoelectric conversion portion 2 for avalanche charge, and a signal readout circuit including an analog/digital conversion circuit that compares a voltage value corresponding to the amount of charge generated by the photoelectric conversion portion with a threshold voltage value, generates pulses, counts the pulses, and outputs the pulses. The signal readout circuit includes a first analog-to-digital converter that includes a comparator 41 and a counter 61 and has a threshold voltage VTH1 corresponding to the amount of charge generated by one photon, and a second analog-to-digital converter that includes a comparator 42 and a counter 62, and has a threshold voltage VTH2 corresponding to the amount of charge generated by the two photons.SELECTED DRAWING: Figure 1
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Inventors:
GOTO MASAHIDE
TAMEMURA SHIGEAKI
TAMEMURA SHIGEAKI
Application Number:
JP2019129482A
Publication Date:
February 12, 2021
Filing Date:
July 11, 2019
Export Citation:
Assignee:
JAPAN BROADCASTING CORP
International Classes:
H04N5/378; G01J1/02; G01J1/04; G01J1/42; H01L27/146; H04N5/374; H04N9/09
Domestic Patent References:
| JP2000253320A | 2000-09-14 | |||
| JP2013019678A | 2013-01-31 | |||
| JP2016213823A | 2016-12-15 | |||
| JPH0468876A | 1992-03-04 | |||
| JP2004518979A | 2004-06-24 | |||
| JPH0799868B2 | 1995-10-25 | |||
| JP2002168958A | 2002-06-14 |
Foreign References:
| WO2017098725A1 | 2017-06-15 |
Attorney, Agent or Firm:
Kenji Sugimura
Mitsutsugu Sugimura
Makoto Fukuo
Kyoichi Saito
Mitsutsugu Sugimura
Makoto Fukuo
Kyoichi Saito