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公开(公告)号：US20230171522A1
公开(公告)日：2023-06-01
申请号：US17922806
申请日：2021-03-17
发明人： Mitsuhito MASE , Masaru NAKANO , Jun HIRAMITSU , Akihiro SHIMADA , Hiroaki ISHII , Toshinori ITO , Yuma TANAKA
IPC分类号： H04N25/771 , H01L27/146
CPC分类号： H04N25/771 , H01L27/14643
摘要： A light detection device includes a controller that controls electric potentials of a charge collection electrode and a transfer gate electrode so that potential energy in a region immediately below the charge collection electrode is a first level, and potential energy in a region immediately below the transfer gate electrode is higher than the potential energy in the region immediately below the charge collection electrode in a first period, and so that the potential energy in the region immediately below the charge collection electrode is a second level higher than the first level, and the potential energy in the region immediately below the transfer gate electrode is lower than the potential energy in the region immediately below the charge collection electrode in a second period after the first period.
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公开(公告)号：US20230387149A1
公开(公告)日：2023-11-30
申请号：US18027730
申请日：2021-10-08
IPC分类号： H01L27/146 , H01L31/107 , H01L31/0224
CPC分类号： H01L27/14609 , H01L27/14643 , H01L31/107 , H01L31/022408
摘要： Provided is an optical sensor including: a charge generation region that generates charges in response to incident light; a charge collection region to which charges generated in the charge generation region are transferred; and at least one transfer gate electrode disposed on a transfer region between the charge generation region and the charge collection region. The charge generation region includes an avalanche multiplication region that causes avalanche multiplication, and a gradient potential energy formation region that forms gradient potential energy that is gradient so that potential energy becomes lower as approaching the transfer region in the charge generation region.
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