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公开(公告)号：US20230223410A1
公开(公告)日：2023-07-13
申请号：US18107834
申请日：2023-02-09
Inventor： Tokuhiko TAMAKI , Hirohisa OHTSUKI , Ryohei MIYAGAWA , Motonori ISHII
IPC: H01L27/146 , H04N25/77
CPC classification number: H01L27/14603 , H01L27/14609 , H04N25/77 , H01L27/14643 , H01L27/14612 , H01L27/14636 , H04N25/709
Abstract: A solid-state imaging device includes: pixels arranged in a matrix; a vertical signal line provided for each column, conveying a pixel signal; a power line provided for each column, proving a power supply voltage; and a feedback signal line provided for each column, conveying a signal from a peripheral circuit to a pixel, in which each of the pixels includes: an N-type diffusion layer; a photoelectric conversion element above the N-type diffusion layer; and a charge accumulation node between the N-type diffusion layer and the photoelectric conversion element, accumulating signal charge generated in the photoelectric conversion element, the feedback signal line, a metal line which is a part of the charge accumulation node, the vertical signal line, and the power line are disposed in a second interconnect layer, and the vertical signal line and the power line are disposed between the feedback signal line and the metal line.
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公开(公告)号：US20230204415A1
公开(公告)日：2023-06-29
申请号：US18111131
申请日：2023-02-17
Inventor： Akito INOUE , Mitsuyoshi MORI , Yusuke SAKATA , Motonori ISHII
IPC: G01J1/44 , H03K17/687
CPC classification number: G01J1/44 , H03K17/6872 , G01J2001/4466
Abstract: A photodetector includes: at least one avalanche photodiode including a first semiconductor layer of a first conductivity type and a second semiconductor layer of a second conductivity type; a first transistor connected to the first semiconductor layer and including a channel of the second conductivity type that has polarity opposite to polarity of the first conductivity type; and a second transistor connected to the first semiconductor layer and including a channel of the first conductivity type.
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公开(公告)号：US20220285420A1
公开(公告)日：2022-09-08
申请号：US17752408
申请日：2022-05-24
Inventor： Motonori ISHII
IPC: H01L27/146
Abstract: A photodetector includes a plurality of pixels and a common reset line connected to the pixels, and each of the pixels includes: an avalanche photodiode; a quenching transistor that includes a gate and a source which are connected to the cathode of the avalanche photodiode; and a photodiode reset transistor that includes a source and a drain one of which is connected to the drain of the quenching transistor and the other of which is connected to the common reset line.
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公开(公告)号：US20220191424A1
公开(公告)日：2022-06-16
申请号：US17683465
申请日：2022-03-01
Inventor： Shota YAMADA , Motonori ISHII , Shigetaka KASUGA , Masato TAKEMOTO , Yutaka HIROSE
IPC: H04N5/3745 , H04N5/357
Abstract: An imaging device includes: a solid-state imaging element having a plurality of pixel cells arranged in a matrix; and a signal processing part configured to process a detection signal outputted from each of the pixel cells. The pixel cells each include an avalanche photodiode and output a voltage corresponding to a count number of photons received by the avalanche photodiode as the detection signal. The signal processing part includes a variation calculation part configured to calculate a variation between the pixel cells in the detection signal outputted from each of the pixel cells, and a correction calculation part configured to correct the detection signal outputted from each of the pixel cells, on the basis of the variation calculated by the variation calculation part.
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公开(公告)号：US20220182572A1
公开(公告)日：2022-06-09
申请号：US17679942
申请日：2022-02-24
Inventor： Shota YAMADA , Shigetaka KASUGA , Motonori ISHII , Akito INOUE , Yutaka HIROSE
IPC: H04N5/3745 , G01S17/894 , G01S7/4865 , G01S7/481
Abstract: An imaging device includes: a solid-state imaging element having a plurality of pixel cells arranged in a matrix; and a control part configured to control the solid-state imaging element. The pixel cells each include an avalanche photodiode, a floating diffusion part configured to accumulate electric charges, a transfer transistor connecting a cathode of the avalanche photodiode and the floating diffusion part, and a reset transistor for resetting electric charges accumulated in the floating diffusion part. The control part controls the reset transistor to discharge electric charges exceeding a predetermined electric charge amount, of electric charges accumulated in the floating diffusion part from the cathode of the avalanche photodiode via the transfer transistor.
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Patent Agency Ranking
公开(公告)号：US20210092316A1
公开(公告)日：2021-03-25
申请号：US17111219
申请日：2020-12-03
Inventor： Motonori ISHII , Yoshiyuki MATSUNAGA , Yutaka HIROSE
IPC: H04N5/363 , H04N5/3745 , H04N5/374 , H04N5/378
Abstract: An imaging device including: a photoelectric converter that generates signal charge; a charge storage region that stores the signal charge; a first transistor that has a gate coupled to the charge storage region and reads out the signal charge; a second transistor that, has a source and a drain, an output of the first transistor being fed back to one of the source and the drain and being supplied to the charge storage region from the other of the source and the drain; and voltage supply circuitry that supplies voltages varying with time. In a reset operation for discharging the signal charge stored in the charge storage region, the voltage supply circuitry supplies the voltages to a gate of the second. transistor so that the second transistor gradually changes from an OFF state to an ON state.
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27.发明申请公开(公告)号：US20210072380A1
公开(公告)日：2021-03-11
申请号：US16982405
申请日：2019-03-14
Inventor： Hiroshi KOSHIDA , Shinzo KOYAMA , Motonori ISHII , Shigetaka KASUGA
IPC: G01S17/10 , G01S7/481 , G01S7/4865
Abstract: A distance measuring device is to be connected to a wave transmission module to transmit a measuring wave and a wave reception module including a first wave receiver and a second wave receiver, both of which receive the measuring wave reflected from a target. In this distance measuring device, a first wave reception period in which the first wave receiver receives the measuring wave and a second wave reception period in which the second wave receiver receives the measuring wave overlap with each other on a time axis. In addition, in this distance measuring device, a time lag is provided between respective beginning times of the first and second wave reception periods. The time lag is shorter than either the first wave reception period or the second wave reception period.
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公开(公告)号：US20200271783A1
公开(公告)日：2020-08-27
申请号：US16494960
申请日：2018-03-12
Inventor： Shinzo KOYAMA , Masato TAKEMOTO , Motonori ISHII , Yusuke FUKUSHIMA , Susumu FUKUSHIMA
Abstract: A distance measuring device includes a light emitter; a light receiver; a protection cover that is located on an optical path between the light emitter and the light receiver; a mode switch that switches between a first mode and a second mode; a distance calculator that calculates a distance from a target object based on a difference between a time when light is emitted from the light emitter and a time when reflected light is received by the light receiver in the first mode; and an LD light emission intensity adjuster that adjusts a light emission intensity of the light emitter. The adjustment is performed such that a light emission intensity of the light emitter in the second mode is lower than a light emission intensity of the light emitter in the first mode.
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公开(公告)号：US20200025932A1
公开(公告)日：2020-01-23
申请号：US16497754
申请日：2018-03-12
Inventor： Shigeru SAITOU , Shinzo KOYAMA , Masato TAKEMOTO , Motonori ISHII
Abstract: An image recognition device includes a light source that emits lighting pulses to a measurement space, a image generator that generates a distance image based on reflected light acquired by a light receiving element, a reflectivity calculator that calculates a correction coefficient corresponding to a reflectivity for each measurement section, and a lighting pulse controller that controls a number of lighting pulses emitted from the light source according to the correction coefficient for each measurement section.
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30.发明申请公开(公告)号：US20180246214A1
公开(公告)日：2018-08-30
申请号：US15968918
申请日：2018-05-02
Inventor： Motonori ISHII , Shinzo KOYAMA , Masato TAKEMOTO , Shigeru SAITOU
CPC classification number: G01S17/89 , G01S7/481 , G01S7/4861 , G01S7/4863 , G01S7/487 , G01S17/10 , H04N5/332 , H04N5/3575 , H04N5/37452 , H04N5/37457 , H04N9/04553
Abstract: A plurality of pixels in a solid-state imaging device each include: a light receiving circuit that includes a light receiving element performing photoelectric conversion, sets, by an exposure signal, a photoelectric time for performing the photoelectric conversion, and outputs a light reception signal depending on whether or not incident light has reached the pixel within the photoelectric time; a counter circuit that counts, as a count value, the number of times the incident light has reached the pixel, based on the light reception signal; a comparison circuit that sets a value corresponding to the count value as a threshold, and sets a comparison signal to an on state in the case where the count value is greater than the threshold; and a storage circuit that stores, as a distance signal, a time signal when the comparison signal is in the on state.
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