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: 8749675Abstract: 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: January 29, 2013Date of Patent: June 10, 2014Assignee: Canon Kabushiki KaishaInventors: Toru Koizumi, Akira Okita, Masanori Ogura, Shin Kikuchi, Tetsuya Itano
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Patent number: 8717475Abstract: There is provided an image pickup apparatus comprising a plurality of pixels each including a photoelectric conversion unit which converts incident light into an electrical signal and accumulates the electrical signal, an amplifier transistor which amplifies and outputs the signal from the photoelectric conversion unit, a transfer transistor which transfers the electrical signal accumulated in the photoelectric conversion unit to the amplifier transistor, and a processing transistor which performs predetermined processing, and a control circuit which sets the signal level supplied to the control electrode of the transfer transistor in order to turn off the transfer transistor to be lower than the signal level supplied to the control electrode of the processing transistor in order to turn off the processing transistor.Type: GrantFiled: December 1, 2011Date of Patent: May 6, 2014Assignee: Canon Kabushiki KaishaInventors: Hiroki Hiyama, Toru Koizumi, Katsuhito Sakurai, Fumihiro Inui, Masaru Fujimura, Tomoko Eguchi, Masanori Ogura
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Patent number: 8717473Abstract: A solid-state imaging apparatus of a dynamic range enlarged by reading out a carrier accumulated in a carrier accumulation unit at a plurality of times during a single carrier accumulation time period.Type: GrantFiled: April 13, 2012Date of Patent: May 6, 2014Assignee: Canon Kabushiki KaishaInventor: Toru Koizumi
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Publication number: 20140106496Abstract: A method of manufacturing an active pixel sensor having a plurality of pixels, each of the pixels having a photodiode formed by a part of a first semiconductor region of a first conductive type and a second semiconductor region of a second conductive type, and a transfer transistor for transferring a charge carrier from the photodiode, includes the steps of preparing a substrate on which the first semiconductor region of the first conductive type is formed, forming a mask to form the second semiconductor region on the substrate, forming the second semiconductor region using the mask, and forming a gate of the transferring transistor after forming the second semiconductor region. The gate of the transferring transistor overlaps the second semiconductor region in a planar view.Type: ApplicationFiled: December 23, 2013Publication date: April 17, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Toru Koizumi, Shigetoshi Sugawa, Isamu Ueno, Tetsunobu Kochi, Katsuhito Sakurai, Hiroki Hiyama
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Patent number: 8698935Abstract: 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: April 10, 2013Date of Patent: April 15, 2014Assignee: Canon Kabushiki KaishaInventors: Akira Okita, Toru Koizumi, Masanori Ogura, Shin Kikuchi, Tetsuya Itano
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Patent number: 8670049Abstract: A photoelectric conversion device includes a pixel unit including a photoelectric converter, an amplifier arranged on the output side of the pixel unit, an output unit arranged on the output side of the amplifier, a first restriction circuit, and a second restriction circuit. The first restriction circuit restricts, between the amplifier and the output unit, a noise level read out from the pixel unit via the amplifier in reading out the noise level from the pixel unit. The second restriction circuit restricts, between the photoelectric converter and the amplifier, a noise level to be provided to the amplifier in reading out the noise level from the pixel unit.Type: GrantFiled: December 15, 2011Date of Patent: March 11, 2014Assignee: Canon Kabushiki KaishaInventors: Toshiaki Ono, Toru Koizumi, Tetsuya Itano
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Patent number: 8670056Abstract: A solid-state imaging apparatus capable of suppressing blooming and color mixing includes a plurality of pixels, each including a photoelectric converting portion and a transferring portion for transferring signal electrons from the photoelectric converting portion, wherein a plurality of the photoelectric converting portions is formed in a first conductivity type well region formed on the semiconductor substrate; a second conductivity type first impurity region is arranged between the adjacent photoelectric converting portions; a first conductivity type second impurity region having an impurity concentration higher than that of the well region is arranged between the first impurity region and each of the photoelectric converting portions; and a first conductivity type third impurity region having an impurity concentration higher than that of the well region and decreasing from the semiconductor substrate toward the surface direction of the apparatus between the semiconductor substrate and the first impurityType: GrantFiled: March 25, 2009Date of Patent: March 11, 2014Assignee: Canon Kabushiki KaishaInventors: Shoji Kono, Toru Koizumi
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Publication number: 20140054663Abstract: 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: October 30, 2013Publication date: February 27, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Toru Koizumi, Akira Okita, Tetsuya Itano, Sakae Hashimoto, Ryuichi Mishima
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Patent number: 8624307Abstract: 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: GrantFiled: May 23, 2012Date of Patent: January 7, 2014Assignee: Canon Kabushiki KaishaInventors: Toru Koizumi, Seiichiro Sakai, Masanori Ogura
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Publication number: 20140001339Abstract: If separations between photoelectric conversion elements are different from each other, charge leaking into adjacent photoelectric conversion elements varies. A photoelectric conversion apparatus of the present invention includes a first semiconductor region that can be potential barriers against signal charge, between first and second photoelectric conversion elements. Further, the apparatus includes a second semiconductor region that has the same depth as the depth of the first semiconductor region and a width narrower than the width of the first semiconductor region and can be potential barriers against the signal charge, between the first and a third photoelectric conversion element. Moreover, the apparatus includes a third semiconductor region that can be potential barriers against the signal charge under the first semiconductor region and the second semiconductor region.Type: ApplicationFiled: September 3, 2013Publication date: January 2, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Yu Arishima, Takashi Matsuda, Toru Koizumi
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Publication number: 20140002689Abstract: There is provided an image pickup apparatus including a pixel including a photoelectric conversion element and an amplification element for amplifying and outputting a signal generated at the photoelectric conversion element, a load transistor for controlling an electric current flowing at the amplification element, and a potential control element for suppressing potential fluctuation in a first main electrode region of the load transistor which is an output side of the amplification element.Type: ApplicationFiled: September 3, 2013Publication date: January 2, 2014Applicant: KANON KABUSHIKI KAISHAInventors: Katsuhito Sakurai, Toru Koizumi, Hiroki Hiyama
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Solid state imaging using a correction parameter for correcting a cross talk between adjacent pixels
Patent number: 8619163Abstract: An image processing apparatus, for correcting a cross talk between adjacent pixels, includes: a memory unit for storing a correction parameter for reducing a cross talk signal leaked to an object pixel from an adjacent pixel, the correction parameter corresponding to a position of the object pixel; and a correcting unit for subtracting, based on the correction parameter stored in the memory unit, the cross talk signal from a pixel signal of the solid-state imaging apparatus correspondingly to a position of the pixel, wherein a number of the object pixel is at least two, and the at least two object pixels have different addresses in a horizontal direction, and different addresses in a vertical direction.Type: GrantFiled: September 1, 2010Date of Patent: December 31, 2013Assignee: Canon Kabushiki KaishaInventors: Masanori Ogura, Toru Koizumi, Satoshi Koizumi -
Patent number: 8553115Abstract: If separations between photoelectric conversion elements are different from each other, charge leaking into adjacent photoelectric conversion elements varies. A photoelectric conversion apparatus of the present invention includes a first semiconductor region that can be potential barriers against signal charge, between first and second photoelectric conversion elements. Further, the apparatus includes a second semiconductor region that has the same depth as the depth of the first semiconductor region and a width narrower than the width of the first semiconductor region and can be potential barriers against the signal charge, between the first and a third photoelectric conversion element. Moreover, the apparatus includes a third semiconductor region that can be potential barriers against the signal charge under the first semiconductor region and the second semiconductor region.Type: GrantFiled: December 1, 2010Date of Patent: October 8, 2013Assignee: Canon Kabushiki KaishaInventors: Yu Arishima, Takashi Matsuda, Toru Koizumi
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Patent number: 8553120Abstract: There is provided an image pickup apparatus including a pixel including a photoelectric conversion element and an amplification element for amplifying and outputting a signal generated at the photoelectric conversion element, a load transistor for controlling an electric current flowing at the amplification element, and a potential control element for suppressing potential fluctuation in a first main electrode region of the load transistor which is an output side of the amplification element.Type: GrantFiled: June 13, 2011Date of Patent: October 8, 2013Assignee: Canon Kabushiki KaishaInventors: Katsuhito Sakurai, Toru Koizumi, Hiroki Hiyama
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Publication number: 20130248940Abstract: A photoelectric conversion apparatus of the present invention includes: a plurality of photoelectric conversion elements arranged on a substrate; a transistor for transferring a signal charge; and a plurality of transistors for reading out the signal charge transferred. The plurality of photoelectric conversion elements include a first photoelectric conversion element and a second photoelectric conversion element adjacent to each other. The photoelectric conversion apparatus of the present invention includes: a first semiconductor region having a first conductivity type arranged between the first photoelectric conversion element and the second photoelectric conversion element; and a second semiconductor region having the first conductivity type that is arranged on a region where the plurality of transistors are arranged and that has a width larger than that of the first semiconductor region of the first conductivity type.Type: ApplicationFiled: May 15, 2013Publication date: September 26, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Yu Arishima, Yasuhiro Kawabata, Hideaki Takada, Seiichirou Sakai, Toru Koizumi
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Patent number: 8520108Abstract: A photoelectric conversion device prevents a pseudo signal caused by the parasitic capacitance of a transfer switch from being input to an amplifier. A photoelectric conversion device (50) includes a pixel (10) which outputs a signal to a signal line (107), an amplifier which amplifies the signal supplied via the signal line (107), and an isolation switch (121) inserted between a signal line (108) and the input node of the amplifier. The pixel (10) includes a photodiode, a floating diffusion (FD), a transfer switch which transfers the charge of the photodiode to the FD, and an amplification transistor which outputs a signal to a signal line (109) in accordance with the potential of the FD. The isolation switch (121) is turned off at least in a period when a transfer pulse for controlling the transfer switch of the pixel (10) transits.Type: GrantFiled: April 13, 2011Date of Patent: August 27, 2013Assignee: Canon Kabushiki KaishaInventors: Masanori Ogura, Toru Koizumi, Masaru Fujimura
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Patent number: 8520102Abstract: A solid-state imaging apparatus is provided that including a plurality of amplifiers each one amplifying a signal from each one of a plurality of pixels. The amplifier including first and second field effect transistors, gate electrodes of which are connected to the same voltage node (VBL); and a first wiring connected between the voltage node and the gate electrodes of the first and second field effect transistors. The first and second field effect transistors are arranged in a direction perpendicular to a direction in which the plurality of amplifiers is arranged. Material of the first wiring has a resistivity smaller than that of the gate electrodes of the first and second field effect transistors.Type: GrantFiled: March 30, 2011Date of Patent: August 27, 2013Assignee: Canon Kabushiki KaishaInventors: Masanori Ogura, Yuichiro Yamashita, Toru Koizumi
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Patent number: 8477224Abstract: Provided is a solid-state imaging apparatus that is capable of preventing a harmful influence due to noise generated in a control line. The solid-state imaging apparatus includes: a plurality of pixels each including a photoelectric conversion unit for photoelectric converting to generate a signal; control lines for supplying control signals for driving the pixels; driving buffers for driving the control lines; and switching units for switching between a first path for supplying power source voltages from power source circuits to power source terminals of the driving buffers and a second path for supplying power source voltages from capacitors to the power source terminals of the driving buffers.Type: GrantFiled: January 25, 2010Date of Patent: July 2, 2013Assignee: Canon Kabushiki KaishaInventors: Masanori Ogura, Toru Koizumi
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Patent number: 8476102Abstract: A method for manufacturing a solid state image pickup device including a first active region provided with a first conversion unit, a second active region provided with a second conversion unit, and a third active region adjoining the first and the second active regions with a field region therebetween and being provided with a pixel transistor, the method including the steps of ion-implanting first conductivity type impurity ions to form a semiconductor region serving as a potential barrier against the signal carriers at a predetermined depth in the third active region and ion-implanting second conductivity type impurity ions into the third active region with energy lower than the above-described ion-implantation energy.Type: GrantFiled: February 16, 2011Date of Patent: July 2, 2013Assignee: Canon Kabushiki KaishaInventors: Hideaki Takada, Toru Koizumi, Yasuo Yamazaki, Tatsuya Ryoki
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Patent number: 8466401Abstract: A photoelectric conversion apparatus of the present invention includes: a plurality of photoelectric conversion elements arranged on a substrate; a transistor for transferring a signal charge; and a plurality of transistors for reading out the signal charge transferred. The plurality of photoelectric conversion elements include a first photoelectric conversion element and a second photoelectric conversion element adjacent to each other. The photoelectric conversion apparatus of the present invention includes: a first semiconductor region having a first conductivity type arranged between the first photoelectric conversion element and the second photoelectric conversion element; and a second semiconductor region having the first conductivity type that is arranged on a region where the plurality of transistors are arranged and that has a width larger than that of the first semiconductor region of the first conductivity type.Type: GrantFiled: September 20, 2010Date of Patent: June 18, 2013Assignee: Canon Kabushiki KaishaInventors: Yu Arishima, Yasuhiro Kawabata, Hideaki Takada, Seiichirou Sakai, Toru Koizumi