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公开(公告)号:US20190306442A1
公开(公告)日:2019-10-03
申请号:US16352367
申请日:2019-03-13
Inventor: MASASHI MURAKAMI , KAZUKO NISHIMURA , YASUO MIYAKE , YASUNORI INOUE
IPC: H04N5/355
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:US20190081107A1
公开(公告)日:2019-03-14
申请号:US16190363
申请日:2018-11-14
Inventor: MANABU NAKATA , MASUMI IZUCHI , SHINICHI MACHIDA , YASUNORI INOUE
CPC classification number: H01L27/307 , H01L27/146 , H01L27/14667 , H01L27/14669 , H01L51/0046 , H01L51/0061 , H01L51/0068 , H01L51/0069 , H01L51/0072 , H01L51/0073 , H01L51/0078 , H01L51/0084 , H01L51/4246 , H04N5/33 , H04N5/374 , H04N9/045 , H04N9/07
Abstract: An imaging device includes at least one unit pixel cell including a photoelectric converter that converts incident light into electric charges. The photoelectric converter includes: a first electrode; a light-transmitting second electrode; a first photoelectric conversion layer disposed between the first electrode and the second electrode and containing a first material having an absorption peak at a first wavelength; and a second photoelectric conversion layer disposed between the first photoelectric conversion layer and the second electrode and containing a second material having an absorption peak at a second wavelength different from the first wavelength. The absolute value of the ionization potential of the first material is larger by at least 0.2 eV than the absolute value of the ionization potential of the second material.
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公开(公告)号:US20190081106A1
公开(公告)日:2019-03-14
申请号:US16188327
申请日:2018-11-13
Inventor: MANABU NAKATA , MASUMI IZUCHI , SHINICHI MACHIDA , YASUNORI INOUE
Abstract: An imaging device includes at least one unit pixel cell including a photoelectric converter and a voltage application circuit. The photoelectric converter includes a first electrode, a light-transmitting second electrode, a first photoelectric conversion layer containing a first material and a second photoelectric conversion layer containing a second material. The impedance of the first photoelectric conversion layer is larger than the impedance of the second photoelectric conversion layer. The voltage application circuit applies a first voltage or a second voltage having a larger absolute value than the first voltage selectively between the first electrode and the second electrode.
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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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公开(公告)号:US20170230563A1
公开(公告)日:2017-08-10
申请号:US15497193
申请日:2017-04-25
Inventor: YOSHIAKI SATOU , YASUO MIYAKE , YASUNORI INOUE , TOKUHIKO TAMAKI
Abstract: An imaging device includes a unit pixel cell. The unit pixel cell captures first data in a first exposure period and captures second data in a second exposure period different from the first exposure period, the first exposure period and the second exposure period being included in a frame period. A sensitivity per unit time of the unit pixel cell in the first exposure period is different from a sensitivity per unit time of the unit pixel cell in the second exposure period. The imaging device outputs multiple-exposure image data including at least the first data and the second data.
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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:US20190267560A1
公开(公告)日:2019-08-29
申请号:US16274154
申请日:2019-02-12
Inventor: MASAYA HIRADE , MANABU NAKATA , KATSUYA NOZAWA , YASUNORI INOUE
Abstract: A method for manufacturing a photoelectric conversion element includes providing a base structure including a semiconductor substrate having a principal surface, a first electrode located on or above the principal surface, second electrodes which are located on or above the principal surface and which are one- or two-dimensionally arranged, and a photoelectric conversion film covering at least the second electrodes; forming a mask layer on the photoelectric conversion film, the mask layer being conductive and including a covering section covering a portion of the photoelectric conversion film that overlaps the second electrodes in plan view; and partially removing the photoelectric conversion film by immersing the base structure and the mask layer in an etchant.
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公开(公告)号:US20190214427A1
公开(公告)日:2019-07-11
申请号:US16216203
申请日:2018-12-11
Inventor: KATSUYA NOZAWA , YASUNORI INOUE
IPC: H01L27/146 , H04N5/374
CPC classification number: H01L27/14643 , H01L27/14603 , H01L27/14612 , H01L27/14636 , H04N5/374
Abstract: An image sensor includes: a substrate; pixel electrodes disposed on the substrate; a control electrode disposed on the substrate; a photoelectric conversion film disposed on the pixel electrodes; a transparent electrode disposed on the photoelectric conversion film; and a connector that is made of a metal or a metal nitride and electrically connects the control electrode to the transparent electrode. The control electrode is configured to be connected to a circuit that applies a voltage to the photoelectric conversion film. The transparent electrode is made of a semiconductor, and the control electrode is made of a metal or a metal nitride. The connector includes a first region in contact with the transparent electrode and a second region in contact with the control electrode. The area of the first region is larger than the area of the second region.
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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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