Patents by Inventor Akinori Okubo
Akinori Okubo 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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Publication number: 20240128102Abstract: An apparatus monitoring semiconductor manufacturing equipment includes; an optical detector, a light generator generating light along a first optical path towards a semiconductor substrate, wherein upon irradiating the semiconductor substrate, the light becomes reflected light along a second optical path away from the semiconductor substrate and towards the optical detector, a first grating reticle between the light generator and the semiconductor substrate and including first slits having a first pitch and second slits having a second pitch different from the first pitch, a second grating reticle between the semiconductor substrate and the optical detector and including third slits having a third pitch different from the first pitch and the second pitch, wherein the optical detector determines a positional attribute of the semiconductor substrate in relation to a first pattern and a second pattern, the first pattern corresponds to a first portion of light/reflected light sequentially passing through the firsType: ApplicationFiled: March 24, 2023Publication date: April 18, 2024Inventors: SUNGHO JANG, HYUNGJIN KIM, MINHWAN SEO, AKINORI OKUBO, SANGMIN LEE, SINYONG LEE, WONDON JOO, SANGJOON HONG
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Publication number: 20240118072Abstract: Provided are a level sensor configured to detect a height level of a substrate, and a substrate processing apparatus including the level sensor. The level sensor includes a measurement light source configured to radiate measurement light toward the substrate, a prism configured to split reflected light of the measurement light into first polarized light and second polarized light and generate a first optical path length difference between the first polarized light and the second polarized light, an optical path length modulator configured to keep constant an optical path length of the first polarized light and periodically change an optical path length of the second polarized light, and a detector configured to detect the first optical path length difference based on an interference signal between the first polarized light and the second polarized light.Type: ApplicationFiled: June 28, 2023Publication date: April 11, 2024Inventors: Sungho Jang, Sangwoo Bae, Minhwan Seo, Jangwoon Sung, Akinori Okubo, Seungwoo Lee, Jungchul Lee, Jaehwang Jung, Sangjoon Hong
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Patent number: 11946809Abstract: Provided is a polarization measuring device including a stage on which a measurement target is provided, a light source assembly configured to emit incident light, a first polarimeter configured to polarize the incident light, a second polarimeter configured to polarize reflected light reflected from the measurement target that is irradiated by the incident light, a filter assembly configured to remove noise from the reflected light, and a detector configured to receive the reflected light and measure an intensity of the reflected light and a phase of the reflected light.Type: GrantFiled: May 10, 2022Date of Patent: April 2, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Ingi Kim, Minhwan Seo, Sangwoo Bae, Akinori Okubo, Jungchul Lee, Eunhee Jeang
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Patent number: 11916469Abstract: A resonant power conversion device includes: a main circuit provided with a semiconductor switch, a capacitor and an inductor connected in series or parallel to the semiconductor switch; and a drive circuit configured to drive the switching element. The switching element enters an off-state or an on-state depending on a control voltage input to a gate terminal, and the drive circuit includes two or more types of control voltages, as a control voltage at which the switching element enters an off-state.Type: GrantFiled: November 6, 2020Date of Patent: February 27, 2024Assignees: Nissan Motor Co., Ltd., RENAULT S.A.S.Inventors: Taku Shimomura, Keiichiro Numakura, Akinori Okubo
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Publication number: 20230412062Abstract: A resonant power conversion device includes: a main circuit provided with a semiconductor switch, a capacitor and an inductor connected in series or parallel to the semiconductor switch; and a drive circuit configured to drive the switching element. The switching element enters an off-state or an on-state depending on a control voltage input to a gate terminal, and the drive circuit includes two or more types of control voltages, as a control voltage at which the switching element enters an off-state.Type: ApplicationFiled: November 6, 2020Publication date: December 21, 2023Applicants: Nissan Motor Co., Ltd., RENAULT S.A.S.Inventors: Taku Shimomura, Keiichiro Numakura, Akinori Okubo
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Publication number: 20230187235Abstract: A stealth dicing laser device including: a pulse laser generator configured to generate laser light; a condenser lens formed in an optical path of the laser light; a pupil filter configured to transform a phase of the laser light before the laser light passes through the condenser lens; and a controller configured to provide a phase control signal to the pupil filter, wherein the pupil filter transforms the phase of the laser light based on the phase control signal, wherein the phase control signal is a signal transforming a phase expression of the laser light based on a parameter.Type: ApplicationFiled: December 2, 2022Publication date: June 15, 2023Inventors: Akinori OKUBO, Youngchul KWON, Sungho JANG, Jungchul LEE, Deoksuk JANG
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Publication number: 20230102791Abstract: A method for dicing a substrate includes setting a target height for forming a first reforming region inside a target substrate, the target height being a distance from an upper surface of the target substrate to the first reforming region; irradiating a laser beam to a first sample substrate including a first film and a second film being in contact with the first film, and setting a target condition on the basis of a sample condition that results in forming a condensing point of the laser beam on an upper surface of the first film being in contact with the second film; and irradiating the target substrate with the laser beam according to the target condition to form the first reforming region inside the target substrate, wherein a thickness of the second film is the target height.Type: ApplicationFiled: May 10, 2022Publication date: March 30, 2023Inventors: Sung Ho JANG, Min Hwan SEO, Jang Hwi LEE, Young Chul KWON, Sang Woo BAE, Akinori OKUBO, Jung Chul LEE, Won Don JOO
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Publication number: 20230068376Abstract: Provided is a polarization measuring device including a stage on which a measurement target is provided, a light source assembly configured to emit incident light, a first polarimeter configured to polarize the incident light, a second polarimeter configured to polarize reflected light reflected from the measurement target that is irradiated by the incident light, a filter assembly configured to remove noise from the reflected light, and a detector configured to receive the reflected light and measure an intensity of the reflected light and a phase of the reflected light.Type: ApplicationFiled: May 10, 2022Publication date: March 2, 2023Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Ingi KIM, Minhwan SEO, Sangwoo BAE, Akinori OKUBO, Jungchul LEE, Eunhee JEANG
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Patent number: 11312091Abstract: A molding apparatus reduces waviness or deformation of fibers. The molding apparatus includes a fiber feeder that feeds fibers, a resin feeder that feeds a resin, a curing accelerator that accelerates curing of the fed resin while the fed fibers are being tensioned, and a transporter that relatively changes a feeding position of the fibers, a feeding position of the resin, and an accelerating position of the curing.Type: GrantFiled: June 14, 2016Date of Patent: April 26, 2022Assignee: GH Craft Ltd.Inventors: Gaku Kimura, Takeshi Sukemune, Akinori Okubo, Yosuke Aragane
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Patent number: 11146163Abstract: The present disclosure includes a drive circuit (2-4) for switching a switching element, and a variable capacity circuit (6A), connected between a control terminal (G) of the switching element and the drive circuit (2-4), capable of switching at least between a first capacity value and a second capacity value different from the first capacity value, and controls a capacity value between the control terminal and the drive circuit via the variable capacity circuit.Type: GrantFiled: March 7, 2018Date of Patent: October 12, 2021Assignee: NISSAN MOTOR CO., LTD.Inventors: Taku Shimomura, Tetsuya Hayashi, Akinori Okubo, Daiki Sato, Yuichi Iwasaki
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Publication number: 20200395838Abstract: The present disclosure includes a drive circuit (2-4) for switching a switching element, and a variable capacity circuit (6A), connected between a control terminal (G) of the switching element and the drive circuit (2-4), capable of switching at least between a first capacity value and a second capacity value different from the first capacity value, and controls a capacity value between the control terminal and the drive circuit via the variable capacity circuit.Type: ApplicationFiled: March 7, 2018Publication date: December 17, 2020Applicant: NISSAN MOTOR CO., LTD.Inventors: Taku SHIMOMURA, Tetsuya HAYASHI, Akinori OKUBO, Daiki SATO, Yuichi IWASAKI
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Patent number: 10816480Abstract: In a method of detecting a defect on a substrate, an incident beam may be radiated to a surface of the substrate to generate reflected light beams. A second harmonic generation (SHG) beam among the reflected light beams may be detected. The SHG beam may be generated by a defect on the substrate. A nano size defect may be detected by examining the SHG beam.Type: GrantFiled: March 26, 2019Date of Patent: October 27, 2020Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Eun-Hee Jeang, Aleksandr Shorokhov, Anton Medvedev, Maksim Riabko, Sang-Woo Bae, Akinori Okubo, Sang-Min Lee, Seong-Keun Cho, Won-Don Joo
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Patent number: 10658940Abstract: A power converter including an inverter for converting electric power output from a power supply, a first power feeding bus connected to the inverter and to the positive side of the power supply, a second power feeding bus connected to the inverter and the negative side of the power supply, and a plurality of connection circuits including a resistant member and a capacitive member which are connected in series, connected between the first power feeding bus and the second power feeding bus, and having at least two or more different impedances.Type: GrantFiled: December 26, 2014Date of Patent: May 19, 2020Assignee: NISSAN MOTOR CO., LTD.Inventors: Kentaro Shin, Kraisorn Throngnumchai, Tetsuya Hayashi, Akinori Okubo
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Publication number: 20200088649Abstract: In a method of detecting a defect on a substrate, an incident beam may be radiated to a surface of the substrate to generate reflected light beams. A second harmonic generation (SHG) beam among the reflected light beams may be detected. The SHG beam may be generated by a defect on the substrate. A nano size defect may be detected by examining the SHG beam.Type: ApplicationFiled: March 26, 2019Publication date: March 19, 2020Inventors: Eun-Hee JEANG, Aleksandr SHOROKHOV, Anton MEDVEDEV, Maksim RIABKO, Sang-Woo BAE, Akinori OKUBO, Sang-Min LEE, Seong-Keun CHO, Won-Don JOO
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Patent number: 10490622Abstract: A semiconductor capacitor includes a semiconductor substrate, an electrode group formed on the semiconductor substrate, and a plurality of insulators sandwiched between the electrode groups to form a plurality of capacitors. At least one of the plurality of capacitors is set to be different from at least one of a tolerance, which is a capability of the capacitors to withstand a prescribed voltage, and a conductance, which is an ease with which a leakage current flows in the capacitors.Type: GrantFiled: August 5, 2016Date of Patent: November 26, 2019Assignee: Nissan Motor Co., Ltd.Inventors: Yasuaki Hayami, Tetsuya Hayashi, Yusuke Zushi, Wei Ni, Akinori Okubo
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Patent number: 10476495Abstract: A drive device wherein a main switching element is connected to a main current path, an input terminal of the switching element on the higher potential side and an output terminal of the switching element on the lower potential side are electrically connected to a control terminal of the main switching element, a first resistance is connected between an input terminal of the switching element on the lower potential side and a control terminal of the main switching element, a first capacitor is parallelly connected to the first resistance, and a second capacitor is connected between a connection point of the first resistance and a control terminal of the main switching element and a terminal on the higher potential side of the main switching element.Type: GrantFiled: June 17, 2016Date of Patent: November 12, 2019Assignee: NISSAN MOTOR CO., LTD.Inventors: Taku Shimomura, Tetsuya Hayashi, Akinori Okubo, Yuichi Iwasaki
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Publication number: 20190288058Abstract: A semiconductor capacitor includes a semiconductor substrate, an electrode group formed on the semiconductor substrate, and a plurality of insulators sandwiched between the electrode groups to form a plurality of capacitors. At least one of the plurality of capacitors is set to be different from at least one of a tolerance, which is a capability of the capacitors to withstand a prescribed voltage, and a conductance, which is an ease with which a leakage current flows in the capacitors.Type: ApplicationFiled: August 5, 2016Publication date: September 19, 2019Inventors: Yasuaki HAYAMI, Tetsuya HAYASHI, Yusuke ZUSHI, Wei NI, Akinori OKUBO
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Patent number: 10401301Abstract: An optical test system includes a stage region to accommodate an object to be tested, a first incident optical system which changes a first polarization state of a first light beam to a second polarization state and provide the first light beam in the second polarization state to the stage region in a first direction at a first incident angle which is not a right angle, a second incident optical system which changes a third polarization state of a second light beam to a fourth polarization state and inputs the second light beam in the fourth polarization state to the stage region in a second direction at a second incident angle which is not a right angle, and a main optical system to detect a first reflected light beam reflected from the stage region at a first reflection angle different from the first and second incident.Type: GrantFiled: March 29, 2018Date of Patent: September 3, 2019Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seongkeun Cho, Akinori Okubo, Tae Hyun Kim, Sangwoo Bae, Janghwi Lee
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Publication number: 20190181854Abstract: A drive device wherein a main switching element is connected to a main current path, an input terminal of the switching element on the higher potential side and an output terminal of the switching element on the lower potential side are electrically connected to a control terminal of the main switching element, a first resistance is connected between an input terminal of the switching element on the lower potential side and a control terminal of the main switching element, a first capacitor is parallelly connected to the first resistance, and a second capacitor is connected between a connection point of the first resistance and a control terminal of the main switching element and a terminal on the higher potential side of the main switching element.Type: ApplicationFiled: June 17, 2016Publication date: June 13, 2019Applicant: NISSAN MOTOR CO., LTD.Inventors: Taku SHIMOMURA, Tetsuya HAYASHI, Akinori OKUBO, Yuichi IWASAKI
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Patent number: 10312897Abstract: A switching device according to the present invention comprises: a main circuit including a switching element; a control circuit which generates a control signal for switching the switching element between an on state and an off state; and a first signal line and a second signal line which transfer the control signal outputted from the control circuit, to the main circuit. The value of the characteristic impedance (Zcd) of the first and second signal lines is set between the value of the output impedance (Zab) of the control circuit and the value of the input impedance (Zef) of the main circuit.Type: GrantFiled: November 6, 2014Date of Patent: June 4, 2019Assignee: NISSAN MOTOR CO., LTD.Inventors: Akinori Okubo, Throngnumchai Kraisorn, Kentaro Shin