Patents by Inventor Naofumi Sakaguchi
Naofumi Sakaguchi 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: 10194110Abstract: This solid-state imaging device includes a first substrate and a second substrate which have circuit elements constituting pixels disposed therein are electrically connected to each other. The pixels includes: a photoelectric conversion element disposed in the first substrate; an amplifier circuit that amplifies a signal generated in the photoelectric conversion element to output the amplified signal; a signal accumulation circuit which is disposed in the second substrate and accumulates the amplified signal which is output from the amplifier circuit; and an output circuit that outputs the amplified signal accumulated in the signal accumulation circuit from the pixel.Type: GrantFiled: December 28, 2017Date of Patent: January 29, 2019Assignee: OLYMPUS CORPORATIONInventors: Yuichi Gomi, Hideki Kato, Naofumi Sakaguchi, Naoto Fukuoka
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Publication number: 20180124347Abstract: This solid-state imaging device includes a first substrate and a second substrate which have circuit elements constituting pixels disposed therein are electrically connected to each other. The pixels includes: a photoelectric conversion element disposed in the first substrate; an amplifier circuit that amplifies a signal generated in the photoelectric conversion element to output the amplified signal; a signal accumulation circuit which is disposed in the second substrate and accumulates the amplified signal which is output from the amplifier circuit; and an output circuit that outputs the amplified signal accumulated in the signal accumulation circuit from the pixel.Type: ApplicationFiled: December 28, 2017Publication date: May 3, 2018Applicant: OLYMPUS CORPORATIONInventors: Yuichi Gomi, Hideki Kato, Naofumi Sakaguchi, Naoto Fukuoka
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Patent number: 9961286Abstract: There are provided a first semiconductor substrate in which a plurality of photoelectric conversion circuits, which are some circuit elements of the pixel cells including the photoelectric conversion unit, are formed in a two-dimensional matrix, a second semiconductor substrate in which a plurality of memory circuits, which are some other circuit elements of the pixel cells, are formed in a two-dimensional matrix, wherein the some other circuit elements of the pixel cells include memory units that correspond to the photoelectric conversion circuits, store electric signals output by the photoelectric conversion units, and output pixel signals according to the electric signals, and a connection electrode electrically connected to a signal line of the photoelectric conversion circuits and a signal line of the memory circuits, wherein the pixel cells are divided into a plurality of pixel groups in which the pixel cells are combined so that adjacent pixel cells are not included if pixel cells corresponding to lighType: GrantFiled: February 24, 2017Date of Patent: May 1, 2018Assignee: OLYMPUS CORPORATIONInventors: Yoshiaki Takemoto, Naofumi Sakaguchi
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Patent number: 9888199Abstract: This solid-state imaging device includes a first substrate and a second substrate which have circuit elements constituting pixels disposed therein are electrically connected to each other. The pixels includes: a photoelectric conversion element disposed in the first substrate; an amplifier circuit that amplifies a signal generated in the photoelectric conversion element to output the amplified signal; a signal accumulation circuit which is disposed in the second substrate and accumulates the amplified signal which is output from the amplifier circuit; and an output circuit that outputs the amplified signal accumulated in the signal accumulation circuit from the pixel.Type: GrantFiled: January 15, 2016Date of Patent: February 6, 2018Assignee: OLYMPUS CORPORATIONInventors: Yuichi Gomi, Hideki Kato, Naofumi Sakaguchi, Naoto Fukuoka
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Publication number: 20170171484Abstract: There are provided a first semiconductor substrate in which a plurality of photoelectric conversion circuits, which are some circuit elements of the pixel cells including the photoelectric conversion unit, are formed in a two-dimensional matrix, a second semiconductor substrate in which a plurality of memory circuits, which are some other circuit elements of the pixel cells, are formed in a two-dimensional matrix, wherein the some other circuit elements of the pixel cells include memory units that correspond to the photoelectric conversion circuits, store electric signals output by the photoelectric conversion units, and output pixel signals according to the electric signals, and a connection electrode electrically connected to a signal line of the photoelectric conversion circuits and a signal line of the memory circuits, wherein the pixel cells are divided into a plurality of pixel groups in which the pixel cells are combined so that adjacent pixel cells are not included if pixel cells corresponding to lighType: ApplicationFiled: February 24, 2017Publication date: June 15, 2017Applicant: OLYMPUS CORPORATIONInventors: Yoshiaki Takemoto, Naofumi Sakaguchi
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Patent number: 9473720Abstract: A solid-state image-capturing device has a plurality of pixels and first and second substrates in which circuit elements constituting the pixels are arranged and which are electrically connected through a connection unit. The solid-state image-capturing device includes: a photoelectric conversion element included in the pixel of the first substrate; a first current source; a first amplification transistor having a source or a drain connected to the first current source and a gate to which a signal generated by the photoelectric conversion element is input; a second current source; a switch configured to switch ON and OFF of a connection between a vertical signal line and the second current source and to be turned off when the gate of the first amplification transistor is reset; a voltage output circuit configured to output a power supply voltage to the vertical signal line when the gate of the first amplification transistor is reset.Type: GrantFiled: August 3, 2015Date of Patent: October 18, 2016Assignee: OLYMPUS CORPORATIONInventor: Naofumi Sakaguchi
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Patent number: 9349761Abstract: A solid-state image pickup device according to one embodiment of the present invention includes: a first substrate including first pixels arranged in a matrix; and a second substrate electrically coupled to the first substrate and including second pixels arranged in a matrix. The first pixel including a photoelectric conversion element configured to generate a color signal corresponding to an m-th color is the first pixel corresponding to the m-th color where m is an integer equal to one of 1 to n. The second pixel including the signal storing circuit configured to store the color signal corresponding to the m-th color is the second pixel corresponding to the m-th color. At least two second pixels of the second pixels corresponding to the same color are arranged in the same column on the second substrate.Type: GrantFiled: December 6, 2012Date of Patent: May 24, 2016Assignee: OLYMPUS CORPORATIONInventors: Naofumi Sakaguchi, Shinichi Nakajima
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Publication number: 20160134824Abstract: This solid-state imaging device includes a first substrate and a second substrate which have circuit elements constituting pixels disposed therein are electrically connected to each other. The pixels includes: a photoelectric conversion element disposed in the first substrate; an amplifier circuit that amplifies a signal generated in the photoelectric conversion element to output the amplified signal; a signal accumulation circuit which is disposed in the second substrate and accumulates the amplified signal which is output from the amplifier circuit; and an output circuit that outputs the amplified signal accumulated in the signal accumulation circuit from the pixel.Type: ApplicationFiled: January 15, 2016Publication date: May 12, 2016Applicant: OLYMPUS CORPORATIONInventors: Yuichi Gomi, Hideki Kato, Naofumi Sakaguchi, Naoto Fukuoka
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Patent number: 9257468Abstract: This solid-state imaging device includes a first substrate and a second substrate which have circuit elements constituting pixels disposed therein are electrically connected to each other. The pixels includes: a photoelectric conversion element disposed in the first substrate; an amplifier circuit that amplifies a signal generated in the photoelectric conversion element to output the amplified signal; a signal accumulation circuit which is disposed in the second substrate and accumulates the amplified signal which is output from the amplifier circuit; and an output circuit that outputs the amplified signal accumulated in the signal accumulation circuit from the pixel.Type: GrantFiled: November 21, 2012Date of Patent: February 9, 2016Assignee: OLYMPUS CORPORATIONInventors: Yuichi Gomi, Hideki Kato, Naofumi Sakaguchi, Naoto Fukuoka
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Publication number: 20150341582Abstract: A solid-state image-capturing device has a plurality of pixels and first and second substrates in which circuit elements constituting the pixels are arranged and which are electrically connected through a connection unit. The solid-state image-capturing device includes: a photoelectric conversion element included in the pixel of the first substrate; a first current source; a first amplification transistor having a source or a drain connected to the first current source and a gate to which a signal generated by the photoelectric conversion element is input; a second current source; a switch configured to switch ON and OFF of a connection between a vertical signal line and the second current source and to be turned off when the gate of the first amplification transistor is reset; a voltage output circuit configured to output a power supply voltage to the vertical signal line when the gate of the first amplification transistor is reset.Type: ApplicationFiled: August 3, 2015Publication date: November 26, 2015Applicant: OLYMPUS CORPORATIONInventor: Naofumi Sakaguchi
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Patent number: 9070796Abstract: A solid-state imaging device generates signals by photoelectric conversion elements included in a first substrate in which circuit elements of a plurality of pixels are arranged. The solid-state imaging device outputs, from the plurality of pixels via output circuits, the signals that are generated by the photoelectric conversion elements and are via connection parts that electrically connect the first substrate with a second substrate, the output circuits being included in the second substrate.Type: GrantFiled: December 4, 2012Date of Patent: June 30, 2015Assignee: OLYMPUS CORPORATIONInventor: Naofumi Sakaguchi
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Publication number: 20140139713Abstract: This solid-state imaging device includes a first substrate and a second substrate which have circuit elements constituting pixels disposed therein are electrically connected to each other. The pixels includes: a photoelectric conversion element disposed in the first substrate; an amplifier circuit that amplifies a signal generated in the photoelectric conversion element to output the amplified signal; a signal accumulation circuit which is disposed in the second substrate and accumulates the amplified signal which is output from the amplifier circuit; and an output circuit that outputs the amplified signal accumulated in the signal accumulation circuit from the pixel.Type: ApplicationFiled: November 21, 2012Publication date: May 22, 2014Applicant: OLYMPUS CORPORATIONInventors: Yuichi Gomi, Hideki Kato, Naofumi Sakaguchi, Naoto Fukuoka
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Patent number: 8294799Abstract: A solid-state imaging apparatus including: a pixel section having two-dimensionally arranged pixels each containing a photoelectric conversion device for converting a light signal into a signal electric charge and accumulating the signal electric charge, an amplification means for amplifying and outputting as a pixel signal the signal electric charges accumulated at the photoelectric conversion device, a transfer means for transferring the accumulated signal electric charges to the amplification means, and a reset means for resetting the signal electric charges; a vertical scanning section for outputting a vertical scanning signal to drive/control the pixel section row by row; and a vertical selecting section for generating a row transfer signal in accordance with the vertical scanning signal to drive the transfer means and for generating a row reset signal having a falling edge delayed by a predetermined amount from the row transfer signal to drive the reset means.Type: GrantFiled: June 5, 2009Date of Patent: October 23, 2012Assignee: Olympus CorporationInventor: Naofumi Sakaguchi
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Publication number: 20090303367Abstract: A solid-state imaging apparatus including: a pixel section having two-dimensionally arranged pixels each containing a photoelectric conversion device for converting a light signal into a signal electric charge and accumulating the signal electric charge, an amplification means for amplifying and outputting as a pixel signal the signal electric charges accumulated at the photoelectric conversion device, a transfer means for transferring the accumulated signal electric charges to the amplification means, and a reset means for resetting the signal electric charges; a vertical scanning section for outputting a vertical scanning signal to drive/control the pixel section row by row; and a vertical selecting section for generating a row transfer signal in accordance with the vertical scanning signal to drive the transfer means and for generating a row reset signal having a falling edge delayed by a predetermined amount from the row transfer signal to drive the reset means.Type: ApplicationFiled: June 5, 2009Publication date: December 10, 2009Applicant: OLYMPUS CORPORATIONInventor: Naofumi Sakaguchi