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公开(公告)号：US11482558B2
公开(公告)日：2022-10-25
申请号：US16859623
申请日：2020-04-27
Inventor： Kazuko Nishimura , Yutaka Abe , Masashi Murakami , Yoshiyuki Matsunaga
IPC: H01L27/146 , H04N5/357 , H04N5/363 , H04N5/378
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：US11336842B2
公开(公告)日：2022-05-17
申请号：US17185845
申请日：2021-02-25
Inventor： Masashi Murakami , Yasunori Inoue , Yoshihiro Sato , Kazuko Nishimura
IPC: H04N5/343 , H04N5/374 , H01L27/146
Abstract: An imaging device includes a first pixel. The first pixel has a photoelectric converting portion, a first capacitance element, and a first transistor. The photoelectric converting portion converts incident light into signal charge. The first capacitance element includes a first terminal and a second terminal, the first terminal being electrically connected to the photoelectric converting portion in at least a period of exposure. The first transistor includes a first source and a first drain, one of the first source and the first drain is electrically connected to the second terminal, and a direct-current potential is applied to the other of the first source and the first drain.
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公开(公告)号：US11323642B2
公开(公告)日：2022-05-03
申请号：US17116121
申请日：2020-12-09
Inventor： Masashi Murakami , Kazuko Nishimura , Yasuo Miyake , Yasunori Inoue
IPC: H04N5/355 , H01L27/146
Abstract: An imaging device including a photoelectric converter including a first electrode, a second electrode, and a photoelectric conversion layer; a voltage supply circuit that applies 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 being configured to output a signal that corresponds to a potential of the gate; and a detection circuit that is 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, in a case where the level detected by the detection circuit is less than a first threshold value, and applies the bias voltage in a second voltage range that is greater than the first voltage range, in a case where the level detected by the detection circuit is greater than a second threshold value.
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公开(公告)号：US11184563B2
公开(公告)日：2021-11-23
申请号：US17026851
申请日：2020-09-21
Inventor： Yasuo Miyake , Masashi Murakami , Tokuhiko Tamaki , Yoshiaki Satou
IPC: H04N5/335 , H04N5/353 , H01L27/30 , H01L27/146
Abstract: An imaging device including pixels having a photoelectric converter including a first and second electrode, a photoelectric conversion layer; a charge accumulation region electrically connected to the first electrode; and a signal detection circuit. The photoelectric converter is applied with a voltage between the first electrode and the second electrode, and the photoelectric converter has a characteristic, responsive to the voltage within a range from a first voltage to a second voltage, showing that a density of current passing between the first electrode and the second electrode when light is incident on the photoelectric conversion layer becomes substantially equal to that when no light is incident on the photoelectric conversion layer. A difference between the first voltage and the second voltage is 0.5 V or more, and the voltage supply circuit supplies a voltage between the first voltage and the second voltage to the second electrode in a non-exposure period.
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公开(公告)号：US20210105424A1
公开(公告)日：2021-04-08
申请号：US17124278
申请日：2020-12-16
Inventor： Kazuko Nishimura , Tokuhiko Tamaki , Masashi Murakami
IPC: H04N5/355 , H04N5/3745 , H01L27/146 , H04N5/359 , H04N5/363 , H04N5/369 , H04N5/378
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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Patent Agency Ranking
公开(公告)号：US10951839B2
公开(公告)日：2021-03-16
申请号：US16595292
申请日：2019-10-07
Inventor： Shinichi Machida , Masashi Murakami , Takeyoshi Tokuhara , Masaaki Yanagida , Sanshiro Shishido , Manabu Nakata , Masumi Izuchi
Abstract: An imaging apparatus includes a unit pixel including a pixel electrode; a counter electrode facing the pixel electrode; a photoelectric conversion layer disposed between the pixel electrode and the counter electrode; and a computing circuit that acquires a first signal upon a first voltage being applied between the pixel electrode and the counter electrode, the first signal corresponding to an image captured with visible light and infrared light and a second signal upon a second voltage being applied between the pixel electrode and the counter electrode, the second signal corresponding to an image captured with visible light, and generates a third signal by performing a computation using the first signal and the second signal, the third signal corresponding to an image captured with infrared light.
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公开(公告)号：US10893222B2
公开(公告)日：2021-01-12
申请号：US16352367
申请日：2019-03-13
Inventor： Masashi Murakami , Kazuko Nishimura , Yasuo Miyake , Yasunori Inoue
IPC: H04N5/355 , H01L27/146
Abstract: An imaging device including: a photoelectric converter including first and second electrodes and a conversion layer therebetween; a voltage supplier; an outputter outputting a signal indicating the potential of the second electrode; and a detector detecting the signal level, in which the change rate of the conversion efficiency of the photoelectric converter with respect to a bias voltage, applied between the electrodes, when the bias voltage is in a first range is greater than when the bias voltage is in a second range greater than the first range, and the voltage supplier, when the detected level is less than a first threshold, causes the potential difference between the electrodes to become a first difference, and, when the detected level is greater than or equal to a second threshold greater than or equal to the first threshold, causes the potential difference to become a second difference greater than the first difference.
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公开(公告)号：US10672827B2
公开(公告)日：2020-06-02
申请号：US16161903
申请日：2018-10-16
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 electric signal; first transistor having a gate coupled to the photoelectric converter; second transistor one of a source and a drain of which is coupled to one of a source and a drain of the first transistor; third transistor one of a source and a drain of which is coupled to the other of the source and the drain of the second transistor, the other of the source and the drain of the third transistor coupled to the photoelectric converter; first capacitor having a first and second ends, the first end coupled to the other of the source and the drain of the second transistor, first reference voltage applied to the second end; and second capacitor having a third and fourth ends, the third end coupled to the first end, the fourth end coupled to the photoelectric converter.
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公开(公告)号：US10325945B2
公开(公告)日：2019-06-18
申请号：US15878902
申请日：2018-01-24
Inventor： Masashi Murakami , Kazuko Nishimura , Yutaka Abe , Yoshiyuki Matsunaga , Yoshihiro Sato , Junji Hirase
IPC: H01L27/146 , H01L51/42
Abstract: An imaging device includes a unit pixel cell including: a photoelectric converter that generates a signal charge through photoelectric conversion of incident light, and a signal detection circuit that detects an electric signal according to an amount of the signal charge, wherein the signal detection circuit includes: a first transistor that amplifies the electric signal, a gate of the first transistor being connected to the photoelectric converter, a second transistor having a source and a drain, one of the source and the drain being connected to the photoelectric converter, and a first capacitor having a first end and a second end, the first end being connected to the other of the source and the drain of the second transistor, the second end being connected to a first voltage source.
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公开(公告)号：US10306167B2
公开(公告)日：2019-05-28
申请号：US15164910
申请日：2016-05-26
Inventor： Naoki Shimasaki , Masashi Murakami
IPC: H04N5/363 , H04N5/378 , H04N5/3745
Abstract: An imaging device includes: a photoelectric converter generating a signal; a signal detection circuit detecting the signal and including a first transistor having a first control terminal connected to the photoelectric converter, a first input terminal, and a first output terminal, a second transistor having a second control terminal connected to the photoelectric converter, a second input terminal, and a second output terminal, a third transistor having a third control terminal, a third input terminal, and a third output terminal, one of the third input and output terminal connected to one of the second input and output terminal; an output signal line connected to one of the first input and output terminal, and to the other of the third input and output terminal; and a voltage supply circuit connected to the third control terminal, selectively supplying a first voltage or a second voltage to the third control terminal.
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