Invention Grant
- Patent Title: Array of single-photon avalanche diode (SPAD) microcells and operating the same
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Application No.: US16868064Application Date: 2020-05-06
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Publication No.: US11340109B2Publication Date: 2022-05-24
- Inventor: Marcus Edward Hennecke , Boris Kirillov , Thomas Thurner
- Applicant: Infineon Technologies AG
- Applicant Address: DE Neubiberg
- Assignee: Infineon Technologies AG
- Current Assignee: Infineon Technologies AG
- Current Assignee Address: DE Neubiberg
- Agency: Design IP
- Main IPC: G01J1/46
- IPC: G01J1/46 ; G01S7/481 ; G01J1/44

Abstract:
A digital light detector includes a clock signal generator configured to generate a clock signal comprised of clock pulses generated at a predetermined frequency; a single-photon avalanche diode (SPAD) configured to turn on and generate an avalanche current in response to receiving a photon, the SPAD including an internal capacitor coupled internally between an anode terminal and an cathode terminal; and an active quenching-recharging circuit that is triggered by the clock signal. The active quenching-recharging circuit is configured to be activated and deactivated based on the clock signal, where the active quenching-recharging circuit is configured to recharge the internal capacitor on a condition the active quenching-recharging circuit is activated, and where the active quenching-recharging circuit is configured to discharge the internal capacitor on a condition the active quenching-recharging circuit is deactivated.
Public/Granted literature
- US20200370955A1 ARRAY OF SINGLE-PHOTON AVALANCHE DIODE (SPAD) MICROCELLS AND OPERATING THE SAME Public/Granted day:2020-11-26
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