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公开(公告)号:US20240305895A1
公开(公告)日:2024-09-12
申请号:US18664980
申请日:2024-05-15
Inventor: HIROAKI IIJIMA , MASASHI MURAKAMI
IPC: H04N23/73 , H04N25/10 , H04N25/532 , H04N25/79
CPC classification number: H04N23/73 , H04N25/10 , H04N25/532 , H04N25/79
Abstract: An imaging device includes a first pixel and a second pixel. The first pixel includes a first photoelectric converter that generates first signal charge by photoelectric conversion and that has sensitivity to a first wavelength range that is invisible and a first signal detection circuit connected to the first photoelectric converter. The second pixel includes a second photoelectric converter that generates second signal charge by photoelectric conversion and that has sensitivity to a second wavelength range and a second signal detection circuit connected to the second photoelectric converter. An exposure period of the second photoelectric converter does not overlap a light-emitting period of light based on lighting, the light being incident on the first photoelectric converter and having a luminescence peak in the first wavelength range. A readout period during which the second signal detection circuit reads out the second signal charge does not overlap the light-emitting period.
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公开(公告)号:US20210185249A1
公开(公告)日:2021-06-17
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:US20180205896A1
公开(公告)日:2018-07-19
申请号:US15867986
申请日:2018-01-11
Inventor: KAZUKO NISHIMURA , SANSHIRO SHISHIDO , HIDENARI KANEHARA , TAKAYOSHI YAMADA , MASASHI MURAKAMI , YASUNORI INOUE
CPC classification number: H04N5/35518 , H01L27/14643 , H01L27/14665 , H01L29/42372 , H04N5/355 , H04N5/35563 , H04N5/363 , H04N5/378
Abstract: An imaging device includes: a first imaging cell including a first photoelectric converter that generates a first signal by photoelectric conversion, and a first signal processing circuit that is electrically connected to the first photoelectric converter and detects the first signal; and a second imaging cell including a second photoelectric converter that generates a second signal by photoelectric conversion, and a second signal processing circuit that is electrically connected to the second photoelectric converter and detects the second signal. Sensitivity of the first imaging cell is higher than sensitivity of the second imaging cell. The first signal processing circuit has a circuit configuration different from the second signal processing circuit. An operation frequency of the first signal processing circuit is different from an operation frequency of the second signal processing circuit.
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公开(公告)号:US20160190188A1
公开(公告)日:2016-06-30
申请号:US14972153
申请日:2015-12-17
Inventor: MASASHI MURAKAMI , KAZUKO NISHIMURA , YUTAKA ABE , YOSHIYUKI MATSUNAGA , YOSHIHIRO SATO , JUNJI HIRASE
IPC: H01L27/146
CPC classification number: H01L27/14609 , H01L27/14632 , H01L27/14636 , H01L27/14643 , H01L27/14665 , H01L51/42
Abstract: An imaging device includes: a unit pixel cell comprising: a photoelectric converter generating an electric signal and comprising a first and second electrodes and a photoelectric conversion film located therebetween, the first electrode being located on a light receiving side of the photoelectric conversion film, a signal detection circuit detecting the electric signal and comprising a first transistor and a second transistor that are connected to the second electrode, the first transistor amplifying the electric signal, and a capacitor circuit comprising a first capacitor and a second capacitor having a capacitance value larger than that of the first capacitor that are serially connected to each other, the capacitor circuit being provided between the second electrode and a reference voltage; and a feedback circuit comprising the first transistor and an inverting amplifier and negatively feeding back the electric signal to the second transistor via the first transistor and the inverting amplifier.
Abstract translation: 一种成像装置,包括:单位像素单元,包括:光电转换器,其生成电信号,并且包括位于其间的第一和第二电极和光电转换膜,所述第一电极位于所述光电转换膜的光接收侧, 信号检测电路检测电信号,并包括连接到第二电极的第一晶体管和第二晶体管,放大电信号的第一晶体管,以及电容电路,包括第一电容器和电容值大于的电容值的第二电容器 所述第一电容器彼此串联连接,所述电容器电路设置在所述第二电极和参考电压之间; 以及包括第一晶体管和反相放大器的反馈电路,并且经由第一晶体管和反相放大器将电信号负反馈给第二晶体管。
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公开(公告)号:US20180249101A1
公开(公告)日:2018-08-30
申请号:US15963410
申请日:2018-04-26
Inventor: YASUO MIYAKE , MASASHI MURAKAMI , TOKUHIKO TAMAKI , YOSHIAKI SATOU
IPC: H04N5/353 , H01L27/146 , H04N5/355 , H04N5/378 , H04N5/369
CPC classification number: H04N5/353 , H01L27/14609 , H01L27/14612 , H01L27/14636 , H01L27/14643 , H01L27/14669 , H01L27/307 , H01L51/0078 , H04N5/3532 , H04N5/35554 , H04N5/3698 , H04N5/378 , Y02E10/549
Abstract: An imaging device including: unit pixel cells each including a first electrode, a second electrode, a photoelectric conversion layer, a charge accumulation region connected to the first electrode, and a signal detection circuit connected to the charge accumulation region; and a voltage supply circuit connected to the second electrode, the voltage supply circuit supplying a first voltage to the second electrode in a first period, the voltage supply circuit supplying a second voltage that is different from the first voltage to the second electrode in a second period. Each unit pixel cells includes a reset transistor which switches between supply and cutoff of a reset voltage initializing the charge accumulation region, and a potential difference between the first electrode and the second electrode when the reset voltage is supplied is greater than a potential difference between the first electrode and the second electrode after the reset voltage is cut off.
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公开(公告)号:US20170214873A1
公开(公告)日:2017-07-27
申请号:US15406822
申请日:2017-01-16
Inventor: KAZUKO NISHIMURA , TOKUHIKO TAMAKI , MASASHI MURAKAMI
IPC: H04N5/369 , H01L27/146 , H04N5/3745 , H04N5/378 , H04N5/363 , H04N5/359
CPC classification number: H04N5/3696 , H01L27/14614 , H01L27/14636 , H01L27/14643 , H04N5/35563 , H04N5/359 , H04N5/363 , H04N5/3745 , H04N5/37457 , H04N5/378
Abstract: An imaging device includes: a first pixel cell including a first photoelectric converter that generates a first signal by photoelectric conversion, and a first signal detection circuit that is electrically connected to the first photoelectric converter and detects the first signal; and a second pixel cell including a second photoelectric converter that generates a second signal by photoelectric conversion, and a second signal detection circuit that is electrically connected to the second photoelectric converter and detects the second signal. A sensitivity of the first pixel cell is higher than a sensitivity of the second pixel cell. A circuit configuration of the first signal detection circuit is different from a circuit configuration of the second signal detection circuit.
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公开(公告)号:US20170214871A1
公开(公告)日:2017-07-27
申请号:US15406824
申请日:2017-01-16
Inventor: HIDENARI KANEHARA , MASASHI MURAKAMI , TAKAYOSHI YAMADA , KAZUKO NISHIMURA , YASUO MIYAKE
IPC: H04N5/355 , H04N5/3745 , H04N5/376 , H04N5/369
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:US20160119563A1
公开(公告)日:2016-04-28
申请号:US14878180
申请日:2015-10-08
Inventor: TAKAYOSHI YAMADA , MASAYUKI TAKASE , TOKUHIKO TAMAKI , MASASHI MURAKAMI
IPC: H04N5/372 , H04N5/359 , H01L27/146 , H04N5/378
CPC classification number: H04N5/359 , H01L27/14603 , H01L27/14609 , H01L27/1461 , H01L27/14612 , H01L27/14623 , H01L27/14636 , H01L27/14645 , H01L27/14667 , H04N5/23232 , H04N5/265 , H04N5/357 , H04N5/361 , H04N5/374 , H04N5/378
Abstract: An imaging device comprises at least one unit pixel cell. Each of them comprises: a photoelectric conversion layer having a first and second surfaces; a pixel electrode and a shield electrode located on the first surface and separated from each other, a shield voltage being applied to the shield electrode; an upper electrode located on the second surface and opposing to the pixel electrode and the shield electrode, a counter voltage being applied to the upper electrode; a charge accumulation node electrically connected to the pixel electrode; and a charge detection circuit electrically connected to the charge accumulation node. The charge detection circuit includes a reset transistor that sets the pixel electrode at an initialization voltage at predetermined timing. An absolute value of a difference between the shield voltage and the counter voltage is larger than an absolute value of a difference between the initialization voltage and the counter voltage.
Abstract translation: 成像装置包括至少一个单位像素单元。 它们各自包括:具有第一和第二表面的光电转换层; 位于第一表面上并分离的像素电极和屏蔽电极,屏蔽电压施加到屏蔽电极; 位于所述第二表面上并与所述像素电极和所述屏蔽电极相对的上电极,对电压施加到所述上电极; 电连接到像素电极的电荷累积节点; 以及与电荷累积结点电连接的电荷检测电路。 电荷检测电路包括将像素电极设置在预定定时的初始化电压的复位晶体管。 屏蔽电压和对置电压之间的差的绝对值大于初始化电压和反电压之差的绝对值。
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公开(公告)号:US20230336886A1
公开(公告)日:2023-10-19
申请号:US18340886
申请日:2023-06-26
Inventor: MASASHI MURAKAMI , MAKOTO SHOUHO , YOSHIHIRO SATO , KAZUKO NISHIMURA , JUNJI HIRASE
IPC: H04N25/59 , H01L27/146
CPC classification number: H04N25/59 , H01L27/14643 , H01L27/14612
Abstract: An imaging device includes a charge accumulator, a first transistor, and a first capacitive element. The first transistor has a first source, a first drain, and a first gate electrode electrically connected to one of the first source and the first drain. The first capacitive element holds the charges and has a first terminal. A fixed potential is supplied to the other of the first source and the first drain. One of the first source and the first drain is always electrically connected to the first terminal of the first capacitive element from start to end of an exposure period.
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公开(公告)号:US20190244987A1
公开(公告)日:2019-08-08
申请号:US16257607
申请日:2019-01-25
Inventor: MASASHI MURAKAMI , KAZUKO NISHIMURA , YASUO MIYAKE , YASUNORI INOUE
IPC: H01L27/146 , H01L31/14 , H01L27/142 , H04N5/3745
Abstract: An imaging device including: a photoelectric converter including first and second electrodes and a photoelectric conversion layer therebetween; a voltage supplier; an output circuit for outputting a signal corresponding to the potential of the second electrode; and a detector for detecting the signal level. 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 that when the bias voltage is in a second range higher than the first range. The voltage supplier, when the detected level is a first threshold or higher, causes the potential difference between the electrodes to be a first difference, and, when the detected level is lower than a second threshold that is the first threshold or lower, causes the potential difference to be a second difference greater than the first difference.
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