Search International and National Patent Collections

1. (WO2018088479) LIGHT DETECTION DEVICE

Pub. No.:    WO/2018/088479    International Application No.:    PCT/JP2017/040439
Publication Date: Fri May 18 01:59:59 CEST 2018 International Filing Date: Fri Nov 10 00:59:59 CET 2017
IPC: G01J 1/42
G01J 1/02
H01L 27/146
H01L 31/10
H01L 31/107
G01T 1/20
Applicants: HAMAMATSU PHOTONICS K.K.
浜松ホトニクス株式会社
Inventors: BABA Takashi
馬場 隆
ADACHI Shunsuke
足立 俊介
NAKAMURA Shigeyuki
中村 重幸
NAGANO Terumasa
永野 輝昌
YAMAMOTO Koei
山本 晃永
Title: LIGHT DETECTION DEVICE
Abstract:
A light detection device according to the present invention is provided with a semiconductor substrate in which a plurality of pixels are arranged in one dimension. The light detection device has, for each pixel, a plurality of avalanche photodiodes for operating in a Geiger mode, a plurality of quenching resistors electrically connected in series to the corresponding avalanche photodiodes, and signal processing units for processing output signals from the plurality of avalanche photodiodes. Light reception regions of the plurality of avalanche photodiodes are arranged in two dimensions for each pixel. Each of the signal processing units has a gate ground circuit and a current mirror circuit electrically connected to the gate ground circuit. The plurality of avalanche photodiodes of corresponding pixels are electrically connected to the gate ground circuits through the plurality of quenching resistors. The current mirror circuits output signals corresponding to the output signals from the plurality of avalanche photodiodes.