Title:
LIGHT-RECEIVING DEVICE AND RANGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/004378
Kind Code:
A1
Abstract:
The present invention ensures an amount of current necessary for electrostatic discharge (ESD) surge protection without relying on a pixel circuit. A light-receiving device of the present technology comprises: an effective pixel that includes a light-receiving element, which is for detecting the presence or absence of photons, and a pixel readout circuit, which is for processing a signal output by the light-receiving element; a first terminal that applies a prescribed voltage to the light-receiving element; a second terminal that applies a first power supply voltage to the readout circuit; a dummy pixel that does not contribute to detecting the presence or absence of photons; and a protection circuit that protects the light-receiving element and circuit elements of the readout circuit from overvoltage. The protection circuit comprises: a dummy pixel light-receiving element that is connected to the first terminal; and a diode element that is connected between the dummy pixel light-receiving element and the second terminal so as to have a polarity opposite that of the dummy pixel light-receiving element.
Inventors:
MAWATARI KOUZO (JP)
HORIGUCHI ATSUSHI (JP)
HORIGUCHI ATSUSHI (JP)
Application Number:
PCT/JP2023/017274
Publication Date:
January 04, 2024
Filing Date:
May 08, 2023
Export Citation:
Assignee:
SONY SEMICONDUCTOR SOLUTIONS CORP (JP)
International Classes:
H04N25/773; G01J1/42; G01S7/4863; G01S17/931; H01L27/146; H01L31/10; H01L31/107
Domestic Patent References:
| WO2020045125A1 | 2020-03-05 | |||
| WO2022123985A1 | 2022-06-16 | |||
| WO2022054501A1 | 2022-03-17 |
Foreign References:
| JP2009260305A | 2009-11-05 | |||
| US20160223397A1 | 2016-08-04 |
Attorney, Agent or Firm:
MARUSHIMA, Toshikazu (JP)
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