Patents by Inventor Toru Koizumi
Toru Koizumi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8441558Abstract: An solid state image pickup device including a plurality of photoelectric conversion regions (PD1, PD2) for generating carriers by photoelectric conversions to accumulate the generated carriers, an amplifying unit for amplifying the carriers, being commonly provided to at least two photoelectric conversion regions, a first and a second transfer units (Tx-MOS1, Tx-MOS2) for transferring the carriers accumulated in the first and the second photoelectric conversion regions, respectively, a first and a second carrier accumulating units (Cs1, Cs2) for accumulating the carriers flowing out from the first and the second photoelectric conversion regions through a first and a second fixed potential barriers, respectively, and a third and a fourth transfer units (Cs-MOS1, Cs-MOS2) for transferring the carriers accumulated in the first and the second carrier accumulating units to the amplifying unit, respectively.Type: GrantFiled: March 10, 2011Date of Patent: May 14, 2013Assignee: Canon Kabushiki KaishaInventors: Akira Okita, Toru Koizumi, Masanori Ogura, Shin Kikuchi, Tetsuya Itano
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Patent number: 8421894Abstract: An object of the invention is to cause a part of charge spilling from a photoelectric conversion unit to flow into a charge holding unit and thereby extend dynamic range and at the same time improve image quality. There is provided a solid-state image pickup device having a pixel including: a photoelectric conversion unit generating and accumulating charge by means of photoelectric conversion; a first charge holding unit being shielded from light, and being adaptable to accumulate a part of charge spilling from the photoelectric conversion unit in a period during which the photoelectric conversion unit generates and accumulates charge; an amplifying unit (SF-MOS) amplifying charge; a first transfer unit (Tx-MOS) transferring the charge accumulated in the photoelectric conversion unit to the amplifying unit; and a second transfer unit (Ty-MOS) transferring the charge accumulated in the first charge holding unit to the amplifying unit.Type: GrantFiled: December 15, 2011Date of Patent: April 16, 2013Assignee: Canon Kabushiki KaishaInventors: Toru Koizumi, Akira Okita, Katsuhito Sakurai, Isamu Ueno
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Patent number: 8416473Abstract: To control the potential distribution generated in a well at the time of amplification and reduce a shading in a solid-state imaging device of amplification type, the amplification type solid-state imaging device of the present invention comprises a plurality of picture elements each including photoelectric conversion elements formed in a second conductivity type common well inside a first conductivity type substrate, wherein a plurality of well contacts are disposed inside a picture element array area.Type: GrantFiled: July 13, 2012Date of Patent: April 9, 2013Assignee: Canon Kabushiki KaishaInventors: Tomoya Yoneda, Shigetoshi Sugawa, Toru Koizumi, Tetsunobu Kochi
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Patent number: 8411178Abstract: A solid-state imaging apparatus, an imaging system and a driving method for the solid-state imaging apparatus that can reduce jaggy while increasing speed of operation for reading out signals are provided. The driving method includes a first step of storing one or more signals from the plurality of pixels in each of the plurality of first holding units; a second step of adding the signals from the plurality of pixels stored in the plurality of first holding units; and a third step of outputting the signal stored in the second holding unit, such that at least a part of a period of the first step is overlapped with a period of the third step.Type: GrantFiled: August 26, 2009Date of Patent: April 2, 2013Assignee: Canon Kabushiki KaishaInventors: Masanori Ogura, Toru Koizumi
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Patent number: 8395193Abstract: A MOS-type solid-state image pickup device is provided on a semiconductor substrate and includes a photoelectric conversion unit having a first semiconductor region, a second semiconductor region, and a third semiconductor region. A transfer gate electrode is disposed on an insulation film and transfers a carrier from the second semiconductor region to a fourth semiconductor region, and an amplifying MOS transistor has a gate electrode connected to the fourth semiconductor region. In addition, a fifth semiconductor region is continuously disposed to the second semiconductor region, under the gate electrode. An entire surface of the third semiconductor region is covered with the insulation film, and a side portion of the third semiconductor region that is laterally opposite to the transfer gate is in contact with the first semiconductor region.Type: GrantFiled: February 2, 2012Date of Patent: March 12, 2013Assignee: Canon Kabushiki KaishaInventors: Toru Koizumi, Shigetoshi Sugawa, Isamu Ueno, Tetsunobu Kochi, Katsuhito Sakurai, Hiroki Hiyama
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Patent number: 8390708Abstract: A solid state image pickup device which can prevent color mixture by using a layout of a capacitor region provided separately from a floating diffusion region and a camera using such a device are provided. A photodiode region is a rectangular region including a photodiode. A capacitor region includes a carrier holding unit and is arranged on one side of the rectangle of the photodiode region as a region having a side longer than the one side. In a MOS unit region, an output unit region including an output unit having a side longer than the other side which crosses the one side of the rectangle of the photodiode region is arranged on the other side. A gate region and the FD region are arranged between the photodiode region and the capacitor region.Type: GrantFiled: June 6, 2011Date of Patent: March 5, 2013Assignee: Canon Kabushiki KaishaInventors: Toru Koizumi, Akira Okita, Masanori Ogura, Shin Kikuchi, Tetsuya Itano
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Patent number: 8368785Abstract: An image sensing device characterized by including: a pixel array; a plurality of first holding capacitances; a plurality of second holding capacitances; a first reference power supply pattern; and a second reference power supply pattern, wherein at least part of the first reference power supply pattern is arranged in a first region where reference power supply electrodes of the plurality of first holding capacitances are arrayed, at least part of the second reference power supply pattern is arranged in a second region where reference power supply electrodes of the plurality of second holding capacitances are arrayed, and the first reference power supply pattern and the second reference power supply pattern are isolated in a region including the first region and the second region.Type: GrantFiled: March 9, 2009Date of Patent: February 5, 2013Assignee: Canon Kabushiki KaishaInventors: Tatsuya Ryoki, Toru Koizumi, Masanori Ogura
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Patent number: 8345133Abstract: A plurality of photoelectric conversion elements including a first photoelectric conversion element, a second photoelectric conversion element, and a third photoelectric conversion element, are arranged in a photoelectric conversion apparatus of the present invention. Provided, between the first photoelectric conversion element and the second photoelectric conversion element, is a first semiconductor region of a first conductivity type and of a first width in which a signal charge is a minor charier. And, provided, between the first photoelectric conversion element and the third photoelectric conversion element, is a second semiconductor region of the first conductivity type in a higher impurity concentration and of a second width narrower than the first width at a position deeper in a semiconductor substrate rather than a depth of the first semiconductor region.Type: GrantFiled: February 25, 2010Date of Patent: January 1, 2013Assignee: Canon Kabushiki KaishaInventors: Takashi Matsuda, Toru Koizumi
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Publication number: 20120319224Abstract: An object is to provide a solid state image pickup device and a camera which do not worsen a sensor performance in terms of an optical property, a saturated charge amount and the like. A solid state image sensor including a pixel region having a plurality of pixels includes at least a photodiode and an amplifying portion amplifying photocharges outputted from the photodiode in the pixel region, and further includes a well electrode for taking well potential of a well region in which the amplifying portion is arranged. Between the well electrode and the photodiode, no element isolation regions by an insulation film are arranged. Moreover, on the surface of a first semiconductor region in which the photodiode stores the charges, a second semiconductor layer of a conductivity type reverse to that of the first semiconductor region is arranged.Type: ApplicationFiled: August 24, 2012Publication date: December 20, 2012Applicant: CANON KABUSHIKI KAISHAInventor: TORU KOIZUMI
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Publication number: 20120312964Abstract: An image pickup apparatus includes a plurality of pixels each including a read-out node to which an electric charge generated in a photoelectric conversion unit is transferred, an output unit configured to convert the electric charge transferred to the read-out node into a voltage and output the resultant voltage to a signal line, and a switch including a first node electrically connected to the read-out node. Each switch includes a second node different from the first node, and a particular number of second nodes are electrically connected to a common bypass wiring.Type: ApplicationFiled: June 1, 2012Publication date: December 13, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Yuichiro Yamashita, Shinichiro Shimizu, Toru Koizumi, Takashi Matsuda
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Patent number: 8319872Abstract: The solid image pickup device of the present invention comprises a photoelectric conversion part, a charge-voltage conversion part for converting electric charges from the photoelectric conversion part to voltage signals, a signal amplifier for amplifying the voltage signals generated in the charge-voltage conversion part, charge transfer means for transferring photo-electric charges from the photoelectric conversion part to the charge-voltage conversion part, and means for applying a certain voltage to a charge-voltage conversion part, wherein at least two readout operations for reading out the photo-electric charges accumulated during a period of accumulating photo-electric charges in the photoelectric conversion part via a signal amplifier.Type: GrantFiled: May 24, 2011Date of Patent: November 27, 2012Assignee: Canon Kabushiki KaishaInventor: Toru Koizumi
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Patent number: 8319868Abstract: A solid-state imaging apparatus, an imaging system and a driving method for the solid-state imaging apparatus that can reduce jaggy while increasing speed of operation for reading out signals are provided. The driving method includes a first step of storing one or more signals from the plurality of pixels in each of the plurality of first holding units; a second step of adding the signals from the plurality of pixels stored in the plurality of first holding units; and a third step of outputting the signal stored in the second holding unit, such that at least a part of a period of the first step is overlapped with a period of the third step.Type: GrantFiled: August 26, 2009Date of Patent: November 27, 2012Assignee: Canon Kabushiki KaishaInventors: Masanori Ogura, Toru Koizumi
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Publication number: 20120288979Abstract: At least one exemplary embodiment is directed to a solid state image sensor including at least one antireflective layer and/or non rectangular shaped wiring layer cross section to reduce dark currents and 1/f noise.Type: ApplicationFiled: July 23, 2012Publication date: November 15, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Toru Koizumi, Akira Okita, Tetsuya Itano, Sakae Hashimoto, Ryuichi Mishima
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Publication number: 20120280295Abstract: An image pickup device includes pixels, each including a photoelectric conversion unit and a transfer unit. The photoelectric conversion unit includes a first-conductivity-type first semiconductor region and a second-conductivity-type second semiconductor region. A second-conductivity-type third semiconductor region is formed on at least a part of a gap between a photoelectric conversion unit of a first pixel and a photoelectric conversion unit of a second pixel adjacent to the first pixel. A first-conductivity-type fourth semiconductor region having an impurity concentration higher than an impurity concentration of the first semiconductor region is formed between the photoelectric conversion unit and the third semiconductor region. A first-conductivity-type fifth semiconductor region having an impurity concentration higher than the first semiconductor region is arranged between the photoelectric conversion unit and the third semiconductor region and is arranged deeper than fourth semiconductor region.Type: ApplicationFiled: May 23, 2012Publication date: November 8, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Toru Koizumi, Seiichiro Sakai, Masanori Ogura
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Publication number: 20120281262Abstract: To control the potential distribution generated in a well at the time of amplification and reduce a shading in a solid-state imaging device of amplification type, the amplification type solid-state imaging device of the present invention comprises a plurality of picture elements each including photoelectric conversion elements formed in a second conductivity type common well inside a first conductivity type substrate, wherein a plurality of well contacts are disposed inside a picture element array area.Type: ApplicationFiled: July 13, 2012Publication date: November 8, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Tomoya Yoneda, Shigetoshi Sugawa, Toru Koizumi, Tetsunobu Kochi
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Patent number: 8305472Abstract: An image capturing system includes an image sensor and a mechanical shutter. A charge accumulation operation of the pixels of each row of the image sensor starts at the end of a reset operation, and ends when the mechanical shutter sets the pixels of each row to a light shield state. The reset operation of the pixels of each row of the image sensor is performed to select rows sequentially in a first direction from an upper surface to a lower surface of a housing. The mechanical shutter ends exposure of the image sensor while causing a shutter curtain to run in the first direction, and a readout operation of the pixels of each row of the image sensor is performed to select rows sequentially in a second direction that is the reverse of the first direction.Type: GrantFiled: February 28, 2008Date of Patent: November 6, 2012Assignee: Canon Kabushiki KaishaInventors: Satoshi Suzuki, Toru Koizumi
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Patent number: 8274105Abstract: An object is to provide a solid state image pickup device and a camera which do not worsen a sensor performance in terms of an optical property, a saturated charge amount and the like. A solid state image sensor including a pixel region having a plurality of pixels includes at least a photodiode and an amplifying portion amplifying photocharges outputted from the photodiode in the pixel region, and further includes a well electrode for taking well potential of a well region in which the amplifying portion is arranged. Between the well electrode and the photodiode, no element isolation regions by an insulation film are arranged. Moreover, on the surface of a first semiconductor region in which the photodiode stores the charges, a second semiconductor layer of a conductivity type reverse to that of the first semiconductor region is arranged.Type: GrantFiled: March 9, 2011Date of Patent: September 25, 2012Assignee: Canon Kabushiki KaishaInventor: Toru Koizumi
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Publication number: 20120217603Abstract: A solid state image pickup device which can prevent color mixture by using a layout of a capacitor region provided separately from a floating diffusion region and a camera using such a device are provided. A photodiode region is a rectangular region including a photodiode. A capacitor region includes a carrier holding unit and is arranged on one side of the rectangle of the photodiode region as a region having a side longer than the one side. In a MOS unit region, an output unit region including an output unit having a side longer than the other side which crosses the one side of the rectangle of the photodiode region is arranged on the other side. A gate region and the FD region are arranged between the photodiode region and the capacitor region.Type: ApplicationFiled: June 6, 2011Publication date: August 30, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Toru Koizumi, Akira Okita, Masanori Ogura, Shin Kikuchi, Tetsuya Itano
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Patent number: 8252614Abstract: At least one exemplary embodiment is directed to a solid state image sensor including at least one antireflective layer and/or non rectangular shaped wiring layer cross section to reduce dark currents and 1/f noise.Type: GrantFiled: May 14, 2010Date of Patent: August 28, 2012Assignee: Canon Kabushiki KaishaInventors: Toru Koizumi, Akira Okita, Tetsuya Itano, Sakae Hashimoto, Ryuichi Mishima
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Patent number: 8248677Abstract: To control the potential distribution generated in a well at the time of amplification and reduce a shading in a solid-state imaging device of amplification type, the amplification type solid-state imaging device of the present invention comprises a plurality of picture elements each including photoelectric conversion elements formed in a second conductivity type common well inside a first conductivity type substrate, wherein a plurality of well contacts are disposed inside a picture element array area.Type: GrantFiled: March 11, 2011Date of Patent: August 21, 2012Assignee: Canon Kabushiki KaishaInventors: Tomoya Yoneda, Shigetoshi Sugawa, Toru Koizumi, Tetsunobu Kochi