Patents by Inventor Takefumi FUKAGAWA
Takefumi FUKAGAWA 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: 11883130Abstract: A detecting device includes a semiconductor substrate, a first light-emitting section provided in a layered manner at the semiconductor substrate and configured to emit first light having a first wavelength band toward a living body, a second light-emitting section provided at the semiconductor substrate in a layered manner and configured to emit second light having a second wavelength band toward the living body, a first light-receiving section provided at the semiconductor substrate and configured to receive light from the living body based on the first light, a second light-receiving section provided at the semiconductor substrate and configured to receive light from the living body based on the second light, and an optical filter provided at the first light-receiving section and configured to transmit light having the first wavelength band and to attenuate light having the second wavelength band. The second wavelength band is longer than the first wavelength band.Type: GrantFiled: February 23, 2023Date of Patent: January 30, 2024Assignee: SEIKO EPSON CORPORATIONInventors: Tetsuya Yamamoto, Takefumi Fukagawa
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Patent number: 11872017Abstract: A detecting device includes a flexible substrate, a first light-emitting unit provided at the flexible substrate and configured to emit light toward a living body, and a first light-receiving unit provided at the flexible substrate and configured to receive light, based on the light exiting from the first light-emitting unit, from the living body. The first light-emitting unit is constituted by a flexible organic light-emitting diode, and the first light-receiving unit is constituted by a flexible organic photodetector.Type: GrantFiled: February 23, 2023Date of Patent: January 16, 2024Assignee: SEIKO EPSON CORPORATIONInventors: Takashi Tajiri, Takefumi Fukagawa
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Patent number: 11832470Abstract: An organic electroluminescence device includes an organic electroluminescence element, and a protective layer that protects the organic electroluminescence element, wherein the protective layer includes a first insulating film, a second insulating film, a third insulating film, a fourth insulating film, and a fifth insulating film, a density of the second insulating film is higher than a density of each of the first insulating film, the third insulating film, and the fifth insulating film, a density of the fourth insulating film is higher than the density of each of the first insulating film, the third insulating film, and the fifth insulating film, and each of the first insulating film, the second insulating film, the third insulating film, the fourth insulating film, and the fifth insulating film includes an inorganic material including silicon and nitrogen.Type: GrantFiled: January 4, 2021Date of Patent: November 28, 2023Assignee: SEIKO EPSON CORPORATIONInventors: Takefumi Fukagawa, Jun Irobe, Tetsuya Yamamoto
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Publication number: 20230301594Abstract: A detecting device includes a substrate and a plurality of detecting elements arranged in a matrix at the substrate. Each of the plurality of detecting elements includes a light emitting portion that emits light toward a living body, a light receiving portion that can receive light incident from the living body based on the light emitted from the light emitting portion, and a contact detecting portion that detects contact with the living body. The light emitting portion in each of the plurality of detecting elements emits light when the contact detecting portion in the same detecting element has detected contact with the living body.Type: ApplicationFiled: March 13, 2023Publication date: September 28, 2023Applicant: Seiko Epson CorporationInventors: Takefumi FUKAGAWA, Hiromu TAKAYAMA, Tetsuya YAMAMOTO, Takehiko KUBOTA
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Publication number: 20230270339Abstract: A detecting device includes a semiconductor substrate, a first light-emitting section provided in a layered manner at the semiconductor substrate and configured to emit first light having a first wavelength band toward a living body, a second light-emitting section provided at the semiconductor substrate in a layered manner and configured to emit second light having a second wavelength band toward the living body, a first light-receiving section provided at the semiconductor substrate and configured to receive light from the living body based on the first light, a second light-receiving section provided at the semiconductor substrate and configured to receive light from the living body based on the second light, and an optical filter provided at the first light-receiving section and configured to transmit light having the first wavelength band and to attenuate light having the second wavelength band. The second wavelength band is longer than the first wavelength band.Type: ApplicationFiled: February 23, 2023Publication date: August 31, 2023Applicant: SEIKO EPSON CORPORATIONInventors: Tetsuya YAMAMOTO, Takefumi FUKAGAWA
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Publication number: 20230270331Abstract: A detection apparatus includes a semiconductor substrate, a first photoelectric conversion unit formed at the semiconductor substrate, a first light emitting layer formed by being stacked at the semiconductor substrate, and a first filter layer formed by being stacked at the first photoelectric conversion unit.Type: ApplicationFiled: February 24, 2023Publication date: August 31, 2023Applicant: SEIKO EPSON CORPORATIONInventors: Tetsuya YAMAMOTO, Takefumi FUKAGAWA
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Publication number: 20230270338Abstract: A detecting device includes a flexible substrate, a first light-emitting unit provided at the flexible substrate and configured to emit light toward a living body, and a first light-receiving unit provided at the flexible substrate and configured to receive light, based on the light exiting from the first light-emitting unit, from the living body. The first light-emitting unit is constituted by a flexible organic light-emitting diode, and the first light-receiving unit is constituted by a flexible organic photodetector.Type: ApplicationFiled: February 23, 2023Publication date: August 31, 2023Applicant: SEIKO ESPON CORPORATIONInventors: Takashi TAJIRI, Takefumi FUKAGAWA
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Publication number: 20230270332Abstract: A detecting device includes a substrate and a plurality of detecting elements arranged in a matrix at the substrate. Each of the plurality of detecting elements includes a light emitting portion and a light receiving portion that receives light of a wavelength emitted from the light emitting portion at a position adjacent to the light emitting portion. The light receiving portion includes a photoelectric conversion portion formed at the substrate. The light emitting portion includes an organic EL light emitting element formed at the substrate. The area of the light receiving portion is larger than the area of the light emitting portion.Type: ApplicationFiled: February 24, 2023Publication date: August 31, 2023Applicant: SEIKO EPSON CORPORATIONInventor: Takefumi FUKAGAWA
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Publication number: 20230133711Abstract: A detecting device of the present disclosure includes a light emitting portion that emits light and a light receiving portion including an angle limiting member that limits an angle of incidence of light from the light emitting portion, wherein the light receiving portion has a first light receiving region and a second light receiving region that is spaced further from the light emitting portion than the first light receiving region is, the angle limiting member includes a first limiting region corresponding to the first light receiving region and a second limiting region corresponding to the second light receiving region, and the degree of angle limitation of the second limiting region is smaller than the degree of angle limitation of the first limiting region.Type: ApplicationFiled: October 28, 2022Publication date: May 4, 2023Applicant: SEIKO EPSON CORPORATIONInventors: Takefumi FUKAGAWA, Takashi TAJIRI
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Patent number: 11539028Abstract: An organic electroluminescence device includes an organic electroluminescence element, and a protective layer configured to protect the organic electroluminescence element, wherein the protective layer includes a first insulating film, a second insulating film, a third insulating film, a fourth insulating film, and a fifth insulating film, each of the first insulating film, the second insulating film, the third insulating film, the fourth insulating film, and the fifth insulating film is formed of an inorganic material, and a density of the first insulating film is lower than a density of each of the third insulating film and the fifth insulating film.Type: GrantFiled: January 4, 2021Date of Patent: December 27, 2022Assignee: SEIKO EPSON CORPORATIONInventor: Takefumi Fukagawa
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Patent number: 11502281Abstract: A method for manufacturing an electro-optical device according to the present disclosure includes bonding a counter substrate to a substrate, cutting a first portion by irradiation of a laser beam, and removing the first portion, wherein during cutting of the first portion, a first surface and a second surface sandwiching the first portion in plan view are formed by the irradiation of the laser beam, one or both of the first surface and the second surface is inclined with respect to a first plate surface, and a first distance between the first surface and the second surface in the first plate surface is greater than a second distance between the first surface and the second surface in a second plate surface, on the substrate side, of the counter substrate.Type: GrantFiled: April 16, 2020Date of Patent: November 15, 2022Assignee: SEIKO EPSON CORPORATIONInventor: Takefumi Fukagawa
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Patent number: 11424430Abstract: An organic electroluminescence device according to the present disclosure includes a light-emitting layer containing a light-emitting material, a first reflective layer configured to reflect light generated in the light-emitting layer, a second reflective layer disposed on an opposite side of the light-emitting layer from the first reflective layer, having light reflectivity and light transmissivity, to cause light generated in the light-emitting layer to resonate between the second reflective layer and the first reflective layer, and a dielectric multilayer film disposed on an opposite side of the second reflective layer from the light-emitting layer to cause light emitted from the second reflective layer to resonate.Type: GrantFiled: January 8, 2020Date of Patent: August 23, 2022Assignee: SEIKO EPSON CORPORATIONInventors: Jun Irobe, Takefumi Fukagawa
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Publication number: 20220240822Abstract: A detecting device includes: a first light-emitting unit configured to emit first light having a green wavelength band; a second light-emitting unit configured to emit second light having a wavelength band higher than that of the green wavelength band; and a light-receiving unit configured to receive the first light emitted from the first light-emitting unit and emitted from a living body and the second light emitted from the second light-emitting unit and emitted from the living body. The light-receiving unit includes a first light-receiving region configured to receive the first light, a second light-receiving region provided at a position farther away from the first light-emitting unit than the first light-receiving region and configured to receive the second light, and a first filter provided in one of the first light-receiving region and the second light-receiving region and configured to selectively transmit light in a corresponding wavelength band.Type: ApplicationFiled: January 27, 2022Publication date: August 4, 2022Applicant: SEIKO EPSON CORPORATIONInventors: Hiromu TAKAYAMA, Takefumi FUKAGAWA
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Publication number: 20220246806Abstract: A detecting device includes: a first light-emitting section configured to emit first light having a green wavelength band; a second light-emitting section configured to emit second light having a wavelength band longer than the green wavelength band; a first light-receiving section configured to receive the first light emitted from the first light-emitting section and passed through a living body; and a second light-receiving section configured to receive the second light emitted from the second light-emitting section and passed through the living body. In the direction intersecting the direction in which the first light-emitting section and the second light-emitting section are aligned, in the second direction, at least a portion of the first light-receiving section is disposed closer to the first light-emitting section than the second light-receiving section. An area of the first light-receiving section is smaller than an area of the second light-receiving section.Type: ApplicationFiled: January 27, 2022Publication date: August 4, 2022Applicant: SEIKO EPSON CORPORATIONInventors: Tetsuya YAMAMOTO, Takefumi FUKAGAWA
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Patent number: 11394008Abstract: An organic electroluminescence device includes a substrate, an organic electroluminescence element disposed on the substrate, a protecting portion configured to protect the organic electroluminescence element, and a resin portion mainly composed of a resin material. The protecting portion includes a first layer mainly composed of a silicon-based inorganic material containing nitrogen, a second layer mainly composed of silicon oxide or aluminum oxide, and a third layer mainly composed of a silicon-based inorganic material containing nitrogen, and the resin portion is disposed at a side surface of the second layer.Type: GrantFiled: January 14, 2020Date of Patent: July 19, 2022Assignee: SEIKO EPSON CORPORATIONInventors: Suguru Akagawa, Ryoichi Nozawa, Takefumi Fukagawa
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Publication number: 20220170852Abstract: A detecting device of the present disclosure includes a first light-emitting unit that emits first light having a green wavelength band, a second light-emitting unit that emits second light having a wavelength band higher than the green wavelength band, a first light-receiving unit that receives the first light emitted from the first light-emitting unit and emitted from a biological body, and a second light-receiving unit that receives the second light emitted from the second light-emitting unit and emitted from the biological body, in which the first light-receiving unit includes a bandpass filter that selectively transmits the first light, and a distance from the first light-emitting unit to the first light-receiving unit is shorter than a distance from the second light-emitting unit to the second light-receiving unit.Type: ApplicationFiled: November 29, 2021Publication date: June 2, 2022Applicant: SEIKO EPSON CORPORATIONInventors: Tetsuya YAMAMOTO, Takefumi FUKAGAWA
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Publication number: 20220140008Abstract: An electro-optical device includes a light-emitting element, a colored layer corresponding to the light-emitting element, a first inorganic insulating film disposed between the light-emitting element and the colored layer, the first inorganic insulating film including a lens surface having a curved shape, and a second inorganic insulating film disposed, between the light-emitting element and the first inorganic insulating film, so as to be in contact with the first inorganic insulating film, in which an etching rate of the second inorganic insulating film is lower than an etching rate of the first inorganic insulating film.Type: ApplicationFiled: October 29, 2021Publication date: May 5, 2022Applicant: SEIKO EPSON CORPORATIONInventors: Takefumi FUKAGAWA, Jun IROBE
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Publication number: 20210210726Abstract: An organic electroluminescence device includes an organic electroluminescence element, and a protective layer configured to protect the organic electroluminescence element, wherein the protective layer includes a first insulating film, a second insulating film, a third insulating film, a fourth insulating film, and a fifth insulating film, each of the first insulating film, the second insulating film, the third insulating film, the fourth insulating film, and the fifth insulating film is formed of an inorganic material, and a density of the first insulating film is lower than a density of each of the third insulating film and the fifth insulating film.Type: ApplicationFiled: January 4, 2021Publication date: July 8, 2021Applicant: SEIKO EPSON CORPORATIONInventor: Takefumi FUKAGAWA
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Publication number: 20210210727Abstract: An organic electroluminescence device includes an organic electroluminescence element, and a protective layer that protects the organic electroluminescence element, wherein the protective layer includes a first insulating film, a second insulating film, a third insulating film, a fourth insulating film, and a fifth insulating film, a density of the second insulating film is higher than a density of each of the first insulating film, the third insulating film, and the fifth insulating film, a density of the fourth insulating film is higher than the density of each of the first insulating film, the third insulating film, and the fifth insulating film, and each of the first insulating film, the second insulating film, the third insulating film, the fourth insulating film, and the fifth insulating film includes an inorganic material including silicon and nitrogen.Type: ApplicationFiled: January 4, 2021Publication date: July 8, 2021Applicant: SEIKO EPSON CORPORATIONInventors: Takefumi FUKAGAWA, Jun IROBE, Tetsuya YAMAMOTO
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Publication number: 20200335731Abstract: A method for manufacturing an electro-optical device according to the present disclosure includes bonding a counter substrate to a substrate, cutting a first portion by irradiation of a laser beam, and removing the first portion, wherein during cutting of the first portion, a first surface and a second surface sandwiching the first portion in plan view are formed by the irradiation of the laser beam, one or both of the first surface and the second surface is inclined with respect to a first plate surface, and a first distance between the first surface and the second surface in the first plate surface is greater than a second distance between the first surface and the second surface in a second plate surface, on the substrate side, of the counter substrate.Type: ApplicationFiled: April 16, 2020Publication date: October 22, 2020Applicant: SEIKO EPSON CORPORATIONInventor: Takefumi FUKAGAWA