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公开(公告)号：US11637976B2
公开(公告)日：2023-04-25
申请号：US17124278
申请日：2020-12-16
Inventor： Kazuko Nishimura , Tokuhiko Tamaki , Masashi Murakami
IPC: H04N5/378 , H04N5/363 , H04N5/369 , H01L27/146 , H04N5/355 , H04N5/3745 , H04N5/359
Abstract: An imaging device including: a first photoelectric converter that generates a first signal by photoelectric conversion; a first transistor having a gate configured to be electrically coupled to the first photoelectric converter; a second photoelectric converter that generates a second signal by photoelectric conversion; a capacitor having a first terminal and a second terminal, the first terminal being configured to be electrically coupled to second photoelectric converter, a first potential being applied to the second terminal; and a switch element provided between the gate of the first transistor and the first terminal of the capacitor.
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公开(公告)号：US11329079B2
公开(公告)日：2022-05-10
申请号：US16945636
申请日：2020-07-31
Inventor： Masashi Murakami , Kazuko Nishimura , Yutaka Abe , Yoshiyuki Matsunaga , Yoshihiro Sato , Junji Hirase
IPC: H01L27/146 , H01L51/42
Abstract: An imaging device including a semiconductor substrate; a photoelectric converter stacked on the semiconductor substrate, the photoelectric converter being configured to generate a signal through photoelectric conversion of incident light; a multilayer wiring structure located between the semiconductor substrate and the photoelectric converter; and circuitry located in the multilayer wiring structure and the semiconductor substrate, the circuitry being configured to detect the signal. The circuitry includes a first capacitance element and a second capacitance element; and a first transistor including a first source and a first drain in the semiconductor substrate and a first gate. The first capacitance element includes a first electrode, a second electrode, and a dielectric film between the first electrode and the second electrode, the multilayer wiring structure includes an insulating layer adjacent to the first capacitance element, and a permittivity of the dielectric film is greater than a permittivity of the insulating layer.
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公开(公告)号：US11043527B2
公开(公告)日：2021-06-22
申请号：US16441144
申请日：2019-06-14
Inventor： Hidenari Kanehara , Yusuke Okada , Sanshiro Shishido , Kazuko Nishimura
IPC: H01L27/14 , H01L27/146
Abstract: An imaging device includes: a first pixel and a second pixel that are arranged along a first direction and each include a photoelectric converter, a charge accumulator, a first transistor one of a source and a drain of which is connected to the charge accumulator, and a second transistor a gate of which is connected to the charge accumulator; a first line and a second line that each extend along the first direction; a first voltage supply circuit configured to generate a voltage between a first voltage turning on the first transistor of the first pixel and a second voltage turning off the first transistor of the first pixel; and a second voltage supply circuit configured to generate a voltage between a fourth voltage turning on the first transistor of the second pixel and a fifth voltage turning off the first transistor of the second pixel.
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公开(公告)号：US20200295064A1
公开(公告)日：2020-09-17
申请号：US16886621
申请日：2020-05-28
Inventor： Sanshiro Shishido , Masashi Murakami , Kazuko Nishimura
IPC: H01L27/146 , H04N5/355 , H04N5/374 , H04N5/378
Abstract: An imaging device having a semiconductor substrate that includes a first photoelectric converter, and a second photoelectric converter adjacent to the first photoelectric converter. The imaging device further includes a capacitive element one end of which is coupled to the first photoelectric converter, where the first capacitive element at least partly overlaps, in a plan view, with the second photoelectric converter.
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公开(公告)号：US10778921B2
公开(公告)日：2020-09-15
申请号：US16491555
申请日：2018-02-27
Inventor： Yutaka Abe , Kazuko Nishimura , Hiroshi Fujinaka , Masahiro Higuchi , Dai Ichiryu
IPC: H04N5/374 , H04N5/3745 , H03M1/38 , H03M1/56 , H04N5/378
Abstract: A solid-state imaging device includes an A/D converter per column. The A/D converter performs a first A/D conversion that (i) refines, using a first comparator, a range including a potential of an analog signal to a range of a potential corresponding to a difference between a first potential and a second potential through a binary search, and further (ii) generates, based on a result of the binary search, a first digital signal being a high-order portion of a digital signal. The A/D converter also performs a second A/D conversion that generates, based on a ramp signal and the result of the binary search, a second digital signal being a low-order portion of a remainder of the digital signal, by measuring a time necessary for an output of a second comparator to be inverted.
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Patent Agency Ranking
16.发明授权公开(公告)号：US10534240B2
公开(公告)日：2020-01-14
申请号：US16334422
申请日：2017-07-24
Inventor： Hiroshi Iwai , Osamu Shibata , Kazuko Nishimura , Yasuo Miyake , Yoshiaki Satou
Abstract: An imaging control device includes a controller and an input section. The controller causes an image sensor to, during at least one first frame period, capture at least one first multiple exposure image by using a first exposure signal that contains a plurality of pulses having a plurality of pulse widths different from one another; the image sensor is configured to capture an image by making multiple exposure. The input section receives the at least one first multiple exposure image. The controller selects one pulse width from the plurality of pulse widths, based on the first multiple exposure image received by the input section and then causes the image sensor to, during a second frame period, capture the image by using a second exposure signal that contains a pulse having the selected pulse width; the second frame period follows the first frame period.
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公开(公告)号：US10062718B2
公开(公告)日：2018-08-28
申请号：US15408593
申请日：2017-01-18
Inventor： Sanshiro Shishido , Masashi Murakami , Kazuko Nishimura
IPC: H01L27/148 , H01L27/146 , H04N5/355 , H04N5/374 , H04N5/378
CPC classification number: H01L27/14612 , H01L27/14609 , H01L27/14627 , H01L27/14643 , H04N5/355 , H04N5/35563 , H04N5/374 , H04N5/378
Abstract: In one general aspect, the techniques disclosed here feature an imaging device that includes: a semiconductor substrate; a first pixel cell including a first photoelectric converter in the semiconductor substrate, and a first capacitive element one end of which is electrically connected to the first photoelectric converter; and a second pixel cell including a second photoelectric converter in the semiconductor substrate. An area of the second photoelectric converter is larger than an area of the first photoelectric converter in a plan view.
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公开(公告)号：US09894297B2
公开(公告)日：2018-02-13
申请号：US15406824
申请日：2017-01-16
Inventor： Hidenari Kanehara , Masashi Murakami , Takayoshi Yamada , Kazuko Nishimura , Yasuo Miyake
IPC: H04N5/355 , H04N5/369 , H04N5/3745 , H04N5/376
CPC classification number: H04N5/35563 , H04N5/3559 , H04N5/3696 , H04N5/374 , H04N5/37452 , H04N5/376
Abstract: An imaging device includes a pixel cell including: a first photoelectric converter that generates a first electrical signal; and a first signal detection circuit that detects the first electrical signal. The first signal detection circuit includes: a first transistor one of a source and a drain of which is electrically connected to the first photoelectric converter; a first capacitor having first and second ends, the first end being electrically connected to the other of the source and the drain of the first transistor, a reference voltage being applied to the second end; and a second transistor having a gate electrically connected to the first photoelectric converter. The pixel cell outputs, in one frame period, a first image signal and a second image signal in sequence, the first image signal being output when the first transistor is off, the second image signal being output when the first transistor is on.
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公开(公告)号：US09876971B2
公开(公告)日：2018-01-23
申请号：US15196039
申请日：2016-06-29
Inventor： Yutaka Abe , Kazuko Nishimura
IPC: H01L27/146 , H04N5/357 , H04N5/374 , H04N5/378 , H04N5/363
CPC classification number: H04N5/357 , H01L27/14636 , H01L27/14641 , H01L27/14643 , H04N5/363 , H04N5/3658 , H04N5/374 , H04N5/378
Abstract: The solid-state imaging device includes unit cells each of which and generates a pixel signal corresponding to a light reception amount, vertical signal lines each of which is provided for a corresponding column of the unit cells and transfers the corresponding pixel signal, comparators each of which is provided for corresponding one of the vertical signal lines, and a ramp signal generation circuit that supplies a common ramp signal to the comparators. Each of the comparators includes a differential amplifier circuit that includes a transistor to which the ramp signal or the pixel signal is input, a transistor to which the other of the ramp signal and the pixel signal is input, an output terminal for outputting a signal corresponding to a difference between the ramp signal and the pixel signal, and a voltage generation circuit for reducing fluctuations of charge accumulated in a capacitance component of the transistor.
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公开(公告)号：US12021109B2
公开(公告)日：2024-06-25
申请号：US18300928
申请日：2023-04-14
Inventor： Masashi Murakami , Kazuko Nishimura , Yasuo Miyake , Yasunori Inoue
IPC: H01L27/146 , H01L27/142 , H01L31/14 , H10K39/32 , H04N25/571 , H04N25/76 , H04N25/77 , H10K30/80 , H10K50/80
CPC classification number: H01L27/14665 , H01L27/142 , H01L27/14601 , H01L27/14609 , H01L27/1461 , H01L31/143 , H10K39/32 , H04N25/571 , H04N25/76 , H04N25/77 , H10K30/80 , H10K50/80
Abstract: A camera system including a photoelectric convertor including a first and second electrode, and a photoelectric conversion layer; and a correction circuit correcting a signal corresponding to a potential change of the second electrode. The photoelectric convertor has a photoelectric conversion characteristic in which rate of change of the photoelectric conversion efficiency with respect to a first bias voltage between the first electrode and the second electrode when the first bias voltage is in a first voltage range, is greater than the rate of change with respect to a second bias voltage when the second bias voltage is in a second voltage range that is higher than the first voltage range, and a bias voltage between the first electrode and the second electrode exists in the first voltage range, and the correction circuit corrects the signal so that variation of an output regarding an amount of incident light becomes linear.
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