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公开(公告)号：US20240397209A1
公开(公告)日：2024-11-28
申请号：US18774868
申请日：2024-07-16
Inventor： Tsutomu KOBAYASHI , Kazuko NISHIMURA , Yasuo MIYAKE , Sanshiro SHISHIDO
Abstract: A camera system includes: a photoelectric converter including a first electrode, a second electrode, and a photoelectric conversion layer between the first electrode and the second electrode, the photoelectric conversion layer converting incident light into electric charge; voltage application circuitry that supplies a first voltage and a second voltage less than the first voltage between the first electrode and the second electrode in a frame; and a controller that derives a voltage value corresponding to an attenuation ratio set for the frame and that causes the voltage supply circuitry to supply the first voltage having the voltage value and the second voltage between the first electrode and the second electrode in the frame.
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公开(公告)号：US20230224600A1
公开(公告)日：2023-07-13
申请号：US18180708
申请日：2023-03-08
Inventor： Kazuko NISHIMURA , Tokuhiko TAMAKI , Masashi MURAKAMI
IPC: H04N5/335 , H01L27/146
CPC classification number: H04N25/585 , H04N25/62 , H04N25/65 , H04N25/75 , H01L27/14643 , H04N25/778 , H04N25/77 , H01L27/14636 , H01L27/14614
Abstract: An imaging device including: a first imaging cell including a first photoelectric converter that generates a first signal; and a second imaging cell including: a second photoelectric converter that generates a second signal; and a capacitor having a first and second terminal, the first terminal electrically coupled to second photoelectric converter. An area of the first photoelectric converter is greater than an area of the second photoelectric converter in a plan view, the first imaging cell has a first number of saturation charges, and the second imaging cell has a second number of saturation charges, the first number of saturation charges is greater than the second number of saturation charges, and the capacitor has capacitance that causes the second number of saturation charges of the second imaging cell to become greater than the first number of saturation charges of the first imaging cell.
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公开(公告)号：US20220320161A1
公开(公告)日：2022-10-06
申请号：US17712873
申请日：2022-04-04
Inventor： Masashi MURAKAMI , Kazuko NISHIMURA , Yutaka ABE , Yoshiyuki MATSUNAGA , Yoshihiro SATO , Junji HIRASE
IPC: H01L27/146
Abstract: An imaging device including: a photoelectric converter that converts incident light into a signal charge; a node to which the signal charge is input; a transistor having a source and a drain, one of the source and the drain being connected to the node; and a capacitive element. The capacitive element including a first electrode, a second electrode and a dielectric film sandwiched between the first electrode and the second electrode, the first electrode being connected to the other of the source and the drain of the transistor, the second electrode being connected to a voltage source or a ground. The transistor is configured to switch a first mode and a second mode, a sensitivity in the first mode being different from a sensitivity in the second mode.
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公开(公告)号：US20220224847A1
公开(公告)日：2022-07-14
申请号：US17708871
申请日：2022-03-30
Inventor： Masashi MURAKAMI , Kazuko NISHIMURA , Yasuo MIYAKE , Yasunori INOUE
IPC: H04N5/355
Abstract: An imaging device including a pixel that includes: a photoelectric converter that converts light into a charge; a charge accumulation region to which the charge is input; and an amplifier transistor that includes a gate electrically connected to the charge accumulation region. The amplifier transistor being configured to output a signal that corresponds to a potential of the charge accumulation region. The imaging device further including a detection circuit that is configured to detect a level of the signal from the amplifier transistor, wherein a sensitivity of the pixel is caused to be increased, in a case where the level detected by the detection circuit is greater than a first threshold value.
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公开(公告)号：US20220174223A1
公开(公告)日：2022-06-02
申请号：US17672287
申请日：2022-02-15
Inventor： Tsutomu KOBAYASHI , Kazuko NISHIMURA , Yasuo MIYAKE , Sanshiro SHISHIDO
Abstract: A camera system includes: a photoelectric converter including a first electrode, a second electrode, and a photoelectric conversion layer between the first electrode and the second electrode, the photoelectric conversion layer converting incident light into electric charge; voltage application circuitry; and a controller that derives a duty cycle corresponding to an attenuation ratio set for a first frame and that causes the voltage application circuitry to apply a pulse voltage having the duty cycle between the first electrode and the second electrode in the first frame.
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Patent Agency Ranking
公开(公告)号：US20210385366A1
公开(公告)日：2021-12-09
申请号：US17405501
申请日：2021-08-18
Inventor： Yoshiaki SATOU , Sanshiro SHISHIDO , Yasuo MIYAKE , Kazuko NISHIMURA , Hiroshi IWAI , Osamu SHIBATA
Abstract: A camera system including an imaging device that captures a first image by a normal exposure including only one exposure and that captures a second image by a multiple exposure including a plurality of exposures; and a control circuit. The the imaging device captures the second image in a first frame period, and the control circuit determines, based on the second image captured in the first frame period, whether to capture an image by the normal exposure or capture an image by the multiple exposure in a second frame period following the first frame period.
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公开(公告)号：US20210167101A1
公开(公告)日：2021-06-03
申请号：US17173885
申请日：2021-02-11
Inventor： Masashi MURAKAMI , Kazuko NISHIMURA , Yasuo MIYAKE , Yasunori INOUE
IPC: H01L27/146 , H01L27/142 , H01L31/14
Abstract: An imaging device includes: a photoelectric converter including first and second electrodes, and a photoelectric conversion layer located between the first electrode and the second electrode; a voltage supply circuit applying a bias voltage between the first electrode and the second electrode; an amplifier transistor including a gate electrically connected to the second electrode, the amplifier transistor configured to output a signal corresponding to a potential of the second electrode; and a detection circuit configured to detect a level of the signal from the amplifier transistor. The voltage supply circuit applies the bias voltage in a first voltage range when the level detected by the detection circuit is greater than or equal to a first threshold value, and applies the bias voltage in a second voltage range that is greater than the first voltage range when the level detected by the detection circuit is less than a second threshold value.
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公开(公告)号：US20200321365A1
公开(公告)日：2020-10-08
申请号：US16907742
申请日：2020-06-22
Inventor： Masashi MURAKAMI , Kazuko NISHIMURA , Yasuo MIYAKE , Yasunori INOUE
IPC: H01L27/146 , H04N5/3745 , H01L27/142 , H01L31/14 , H04N5/374 , H04N5/355
Abstract: An imaging device includes: a photoelectric converter including first and second electrodes, and a photoelectric conversion layer located between the first electrode and the second electrode; a voltage supply circuit applying a bias voltage between the first electrode and the second electrode: an amplifier transistor including a gate electrically connected to the second electrode, the amplifier transistor configured to output a signal corresponding to a potential of the second electrode; and a detection circuit configured to detect a level of the signal from the amplifier transistor. The voltage supply circuit applies the bias voltage in a first voltage range when the level detected by the detection circuit is greater than or equal to a first threshold value, and applies the bias voltage in a second voltage range that is greater than the first voltage range when the level detected by the detection circuit is less than a second threshold value.
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公开(公告)号：US20200258933A1
公开(公告)日：2020-08-13
申请号：US16859623
申请日：2020-04-27
Inventor： Kazuko NISHIMURA , Yutaka ABE , Masashi MURAKAMI , Yoshiyuki MATSUNAGA
IPC: H01L27/146 , H04N5/378 , H04N5/363 , H04N5/357
Abstract: An imaging device having a pixel including: a photoelectric converter that generates an electric signal through photoelectric conversion of incident light; a first transistor that has a gate coupled to the photoelectric converter and that amplifies the electric signal; and a second transistor that has a gate coupled to the photoelectric converter, one of a source and a drain of the second transistor being coupled to the photoelectric converter. The imaging device further includes a voltage supply circuit configured to supply two or more different voltages to the other of the source and the drain of the second transistor.
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公开(公告)号：US20200036931A1
公开(公告)日：2020-01-30
申请号：US16491555
申请日：2018-02-27
Inventor： Yutaka ABE , Kazuko NISHIMURA , Hiroshi FUJINAKA , Masahiro HIGUCHI , Dai ICHIRYU
IPC: H04N5/3745 , H03M1/56 , H03M1/38 , 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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