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    IMAGING APPARATUS AND IMAGING SYSTEM
    4.
    发明申请
    IMAGING APPARATUS AND IMAGING SYSTEM 有权

    公开(公告)号：US20220272297A1

    公开(公告)日：2022-08-25

    申请号：US17740682

    申请日：2022-05-10

    申请人： Sony Semiconductor Solutions Corporation

    发明人： Tatsuki Nishino

    IPC分类号： H04N5/3745 ,  H04N5/369 ,  G01S17/931 ,  G01S17/89 ,  H01L27/146 ,  H01L31/107 ,  H01L31/02

    摘要： This technology relates to an imaging apparatus and an imaging system for improving the accuracy of distance measurement performed by use of SPADs.
    The imaging apparatus includes a pixel array section having pixel sections arrayed therein. Each pixel section includes: an SPAD (single photon avalanche photodiode); a resistance component configured to be connected serially with the SPAD; an output section configured to output a light reception signal indicating photon incidence on the SPAD; and a pulse generation section configured to output a pulse signal in synchronism with the output of the light reception signal. Each pixel sections further includes at least one of: a switch configured to be connected interposingly between the SPAD and the resistance component and turned off in synchronism with the pulse signal; or a pull-in section configured to pull in an input current flowing through the SPAD via the resistance component in synchronism with the pulse signal, thereby suppressing the input current flowing through the SPAD. This technology may be applied to cameras that capture range images, for example.

    Light receiving element and ranging system
    5.
    发明授权
    Light receiving element and ranging system 有权

    公开(公告)号：US11965970B2

    公开(公告)日：2024-04-23

    申请号：US17250672

    申请日：2019-08-16

    申请人： SONY SEMICONDUCTOR SOLUTIONS CORPORATION

    发明人： Tatsuki Nishino

    IPC分类号： G01S7/4863 ,  G01J1/44 ,  G01S17/931 ,  H01L31/107

    CPC分类号： G01S17/931 ,  G01J1/44 ,  G01S7/4863 ,  H01L31/107 ,  G01J2001/442 ,  G01J2001/4466 ,  G01J2001/4473

    摘要： A light receiving element and a ranging system is provided which achieve improvement of pixel characteristics while allowing variation in a breakdown voltage of an SPAD. The light receiving element includes a pixel array in which a plurality of pixels is arranged in a matrix, and a pixel driving unit configured to control respective pixels of the pixel array to be active pixels or non-active pixels. The pixel includes an SPAD, a transistor connected to the SPAD in series, an inverter configured to output a detection signal indicating incidence of a photon on the SPAD, a first transistor which is switched on or off in accordance with control of the pixels to be the active pixels or the non-active pixels, and a second transistor connected to the first transistor in series.

    Light receiving element and ranging system
    6.
    发明授权
    Light receiving element and ranging system 有权

    公开(公告)号：US11947049B2

    公开(公告)日：2024-04-02

    申请号：US17274509

    申请日：2019-09-04

    申请人： Sony Semiconductor Solutions Corporation

    发明人： Tatsuki Nishino

    IPC分类号： G01S7/497 ,  G01S7/4863 ,  H04N25/60 ,  H04N25/77 ,  G01S17/931

    CPC分类号： G01S7/497 ,  G01S7/4863 ,  H04N25/60 ,  H04N25/77 ,  G01S17/931

    摘要： The present technology relates to a light receiving element and a ranging system capable of improving a pixel characteristic by responding to a change in a breakdown voltage due to a temperature change.
    The light receiving element includes: a pixel array in which a plurality of pixels each including an SPAD is arranged in a matrix; a pixel drive unit that controls each pixel is the pixel array to be an active pixel or an inactive pixel; a leakage current detection unit that detects a leakage current of the inactive pixel; and a voltage control unit that controls a voltage supplied to a side of an anode or a side of a cathode of the SPAD such that the leakage current has a current value within a predetermined range. The present technology can be applied to, for example, a ranging system or the like that detects a distance to a subject in a depth direction.

    Imaging apparatus and imaging system
    8.
    发明授权
    Imaging apparatus and imaging system 有权

    公开(公告)号：US11950010B2

    公开(公告)日：2024-04-02

    申请号：US17740682

    申请日：2022-05-10

    申请人： Sony Semiconductor Solutions Corporation

    发明人： Tatsuki Nishino

    IPC分类号： H04N5/3745 ,  G01S17/89 ,  G01S17/931 ,  H01L27/146 ,  H01L31/02 ,  H01L31/107 ,  H04N25/77 ,  H04N25/79

    CPC分类号： H04N25/77 ,  G01S17/89 ,  G01S17/931 ,  H01L27/14643 ,  H01L31/02027 ,  H01L31/107 ,  H04N25/79

    摘要： This technology relates to an imaging apparatus and an imaging system for improving the accuracy of distance measurement performed by use of SPADs.
    The imaging apparatus includes a pixel array section having pixel sections arrayed therein. Each pixel section includes: an SPAD (single photon avalanche photodiode); a resistance component configured to be connected serially with the SPAD; an output section configured to output a light reception signal indicating photon incidence on the SPAD; and a pulse generation section configured to output a pulse signal in synchronism with the output of the light reception signal. Each pixel sections further includes at least one of: a switch configured to be connected interposingly between the SPAD and the resistance component and turned off in synchronism with the pulse signal; or a pull-in section configured to pull in an input current flowing through the SPAD via the resistance component in synchronism with the pulse signal, thereby suppressing the input current flowing through the SPAD. This technology may be applied to cameras that capture range images, for example.

    LIGHT RECEIVING ELEMENT AND RANGING SYSTEM
    10.
    发明申请
    LIGHT RECEIVING ELEMENT AND RANGING SYSTEM 有权

    公开(公告)号：US20210341591A1

    公开(公告)日：2021-11-04

    申请号：US17274509

    申请日：2019-09-04

    申请人： Sony Semiconductor Solutions Corporation

    发明人： Tatsuki Nishino

    IPC分类号： G01S7/497 ,  G01S7/4863 ,  H04N5/357 ,  H04N5/3745

    摘要： The present technology relates to a light receiving element and a ranging system capable of improving a pixel characteristic by responding to a change in a breakdown voltage due to a temperature change.
    The light receiving element includes: a pixel array in which a plurality of pixels each including an SPAD is arranged in a matrix; a pixel drive unit that controls each pixel is the pixel array to be an active pixel or an inactive pixel; a leakage current detection unit that detects a leakage current of the inactive pixel; and a voltage control unit that controls a voltage supplied to a side of an anode or a side of a cathode of the SPAD such that the leakage current has a current value within a predetermined range. The present technology can be applied to, for example, a ranging system or the like that detects a distance to a subject in a depth direction.