Patents by Inventor Junichi Itai
Junichi Itai 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: 20230411581Abstract: A semiconductor light emitting device includes a semiconductor light source, a resin package surrounding the semiconductor light source, and a lead fixed to the resin package. The lead is provided with a die bonding pad for bonding the semiconductor light source, and with an exposed surface opposite to the die bonding pad The exposed surface is surrounded by the resin package in the in-plane direction of the exposed surface.Type: ApplicationFiled: September 1, 2023Publication date: December 21, 2023Inventors: Masahiko KOBAYAKAWA, Kazuhiro MIREBA, Shintaro YASUDA, Junichi ITAI, Taisuke OKADA
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Patent number: 11777068Abstract: A semiconductor light emitting device includes a semiconductor light source, a resin package surrounding the semiconductor light source, and a lead fixed to the resin package. The lead is provided with a die bonding pad for bonding the semiconductor light source, and with an exposed surface opposite to the die bonding pad The exposed surface is surrounded by the resin package in the in-plane direction of the exposed surface.Type: GrantFiled: August 10, 2022Date of Patent: October 3, 2023Assignee: ROHM CO., LTD.Inventors: Masahiko Kobayakawa, Kazuhiro Mireba, Shintaro Yasuda, Junichi Itai, Taisuke Okada
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Publication number: 20220384699Abstract: A semiconductor light emitting device includes a semiconductor light source, a resin package surrounding the semiconductor light source, and a lead fixed to the resin package. The lead is provided with a die bonding pad for bonding the semiconductor light source, and with an exposed surface opposite to the die bonding pad The exposed surface is surrounded by the resin package in the in-plane direction of the exposed surface.Type: ApplicationFiled: August 10, 2022Publication date: December 1, 2022Inventors: Masahiko KOBAYAKAWA, Kazuhiro MIREBA, Shintaro YASUDA, Junichi ITAI, Taisuke OKADA
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Patent number: 11444008Abstract: A semiconductor light emitting device includes a semiconductor light source, a resin package surrounding the semiconductor light source, and a lead fixed to the resin package. The lead is provided with a die bonding pad for bonding the semiconductor light source, and with an exposed surface opposite to the die bonding pad The exposed surface is surrounded by the resin package in the in-plane direction of the exposed surface.Type: GrantFiled: November 6, 2020Date of Patent: September 13, 2022Assignee: ROHM CO., LTD.Inventors: Masahiko Kobayakawa, Kazuhiro Mireba, Shintaro Yasuda, Junichi Itai, Taisuke Okada
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Patent number: 10991864Abstract: An LED package includes a substrate with a front surface and a back surface spaced apart from each other in a thickness direction of the substrate. First and second wirings are formed on the substrate. An LED chip is mounted on the front surface of the substrate and electrically connected to the first and second wirings. A sealing resin, such as silicone, covers the LED chip. The substrate is made up of glass cloths laminated in the thickness direction and an impregnated resin, such as acrylic resin, impregnated in the glass cloths.Type: GrantFiled: August 1, 2019Date of Patent: April 27, 2021Assignee: ROHM CO., LTD.Inventors: Hirotaka Obuchi, Junichi Itai
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Patent number: 10964870Abstract: The present disclosure provides a light emitting diode (LED) package, which ensures the reliability during use while adopting an LED chip of higher output. The LED package includes an LED chip, which has a front and a back facing opposite sides in the thickness direction z, and a first back electrode provided at the back surface; a first terminal in conduction with the first back electrode; and a first bonding layer, configured to bond the first back electrode and the first terminal 201; wherein the composition of the first bonding layer includes a metal eutectic composition containing Au, and when the LED chip is viewed in the thickness direction z, a first bent portion which is recessed toward the inner side of the periphery of the first back electrode is formed in the first bonding layer.Type: GrantFiled: May 27, 2020Date of Patent: March 30, 2021Assignee: ROHM CO., LTD.Inventors: Yosuke Taka, Tomoichiro Toyama, Junichi Itai
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Publication number: 20210057312Abstract: A semiconductor light emitting device includes a semiconductor light source, a resin package surrounding the semiconductor light source, and a lead fixed to the resin package. The lead is provided with a die bonding pad for bonding the semiconductor light source, and with an exposed surface opposite to the die bonding pad The exposed surface is surrounded by the resin package in the in-plane direction of the exposed surface.Type: ApplicationFiled: November 6, 2020Publication date: February 25, 2021Inventors: Masahiko KOBAYAKAWA, Kazuhiro MIREBA, Shintaro YASUDA, Junichi ITAI, Taisuke OKADA
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Patent number: 10861778Abstract: A semiconductor light emitting device includes semiconductor light source, a resin package surrounding the semiconductor light source, and a lead fixed to the resin package. The lead is provided with a die bonding pad for bonding the semiconductor light source, and with an exposed surface opposite to the die bonding pad The exposed surface is surrounded by the resin package in the in-plane direction of the exposed surface.Type: GrantFiled: September 5, 2019Date of Patent: December 8, 2020Assignee: ROHM CO., LTD.Inventors: Masahiko Kobayakawa, Kazuhiro Mireba, Shintaro Yasuda, Junichi Itai, Taisuke Okada
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Patent number: 10820385Abstract: An LED drive circuit drives an LED module. The LED module has a light-emitting diode, and an identification unit having characteristic information relating to light-emitting characteristics of the light-emitting diode. The LED drive circuit includes a detection unit and a drive circuit. The detection unit is provided for detecting characteristic information, and generates a detection signal that corresponds to the characteristic information. The drive circuit generates drive current by a drive signal supplied according to the characteristic information based on the detection signal, and supplies the drive current to drive the light-emitting diode.Type: GrantFiled: January 31, 2018Date of Patent: October 27, 2020Assignee: Rohm Co., Ltd.Inventors: Kenichi Fukumoto, Koji Katsura, Ryosuke Kanemitsu, Junichi Itai, Nobuaki Matsui, Seiji Nakashima, Kouji Miyamoto
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Patent number: 10784420Abstract: A semiconductor light emitting device includes a substrate made of resin, a first wiring and a second wiring formed on the substrate, a light emitting element disposed on the substrate and electrically connected to the first wiring and the second wiring, and a transparent sealing resin configured to seal the light emitting element. The substrate contains an acrylic resin, and the sealing resin contains silicone.Type: GrantFiled: January 29, 2019Date of Patent: September 22, 2020Assignee: ROHM CO., LTD.Inventors: Hirotaka Obuchi, Junichi Itai
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Publication number: 20200287114Abstract: The present disclosure provides a light emitting diode (LED) package, which ensures the reliability during use while adopting an LED chip of higher output. The LED package includes an LED chip, which has a front and a back facing opposite sides in the thickness direction z, and a first back electrode provided at the back surface; a first terminal in conduction with the first back electrode; and a first bonding layer, configured to bond the first back electrode and the first terminal 201; wherein the composition of the first bonding layer includes a metal eutectic composition containing Au, and when the LED chip is viewed in the thickness direction z, a first bent portion which is recessed toward the inner side of the periphery of the first back electrode is formed in the first bonding layer.Type: ApplicationFiled: May 27, 2020Publication date: September 10, 2020Inventors: Yosuke TAKA, Tomoichiro TOYAMA, Junichi ITAI
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Patent number: 10700250Abstract: The present disclosure provides a light emitting diode (LED) package, which ensures the reliability during use while adopting an LED chip of higher output. The LED package includes an LED chip, which has a front and a back facing opposite sides in the thickness direction z, and a first back electrode provided at the back surface; a first terminal in conduction with the first back electrode; and a first bonding layer, configured to bond the first back electrode and the first terminal 201; wherein the composition of the first bonding layer includes a metal eutectic composition containing Au, and when the LED chip is viewed in the thickness direction z, a first bent portion which is recessed toward the inner side of the periphery of the first back electrode is formed in the first bonding layer.Type: GrantFiled: October 19, 2018Date of Patent: June 30, 2020Assignee: ROHM CO., LTD.Inventors: Yosuke Taka, Tomoichiro Toyama, Junichi Itai
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Publication number: 20200052173Abstract: An LED package includes a substrate with a front surface and a back surface spaced apart from each other in a thickness direction of the substrate. First and second wirings are formed on the substrate. An LED chip is mounted on the front surface of the substrate and electrically connected to the first and second wirings. A sealing resin, such as silicone, covers the LED chip. The substrate is made up of glass cloths laminated in the thickness direction and an impregnated resin, such as acrylic resin, impregnated in the glass cloths.Type: ApplicationFiled: August 1, 2019Publication date: February 13, 2020Inventors: Hirotaka Obuchi, Junichi Itai
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Publication number: 20190393139Abstract: A semiconductor light emitting device includes semiconductor light source, a resin package surrounding the semiconductor light source, and a lead fixed to the resin package. The lead is provided with a die bonding pad for bonding the semiconductor light source, and with an exposed surface opposite to the die bonding pad The exposed surface is surrounded by the resin package in the in-plane direction of the exposed surface.Type: ApplicationFiled: September 5, 2019Publication date: December 26, 2019Inventors: Masahiko KOBAYAKAWA, Kazuhiro MIREBA, Shintaro YASUDA, Junichi ITAI, Taisuke OKADA
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Publication number: 20190387591Abstract: An LED drive circuit drives an LED module. The LED module has a light-emitting diode, and an identification unit having characteristic information relating to light-emitting characteristics of the light-emitting diode. The LED drive circuit includes a detection unit and a drive circuit. The detection unit is provided for detecting characteristic information, and generates a detection signal that corresponds to the characteristic information. The drive circuit generates drive current by a drive signal supplied according to the characteristic information based on the detection signal, and supplies the drive current to drive the light-emitting diode.Type: ApplicationFiled: January 31, 2018Publication date: December 19, 2019Applicant: ROHM CO., LTD.Inventors: Kenichi FUKUMOTO, Koji Katsura, Ryosuke Kanemitsu, Junichi ITAI, Nobuaki MATSUI, Seiji NAKASHIMA, Kouji Miyamoto
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Patent number: 10446475Abstract: A semiconductor light emitting device includes a semiconductor light source, a resin package surrounding the semiconductor light source, and a lead fixed to the resin package. The lead is provided with a die bonding pad for bonding the semiconductor light source, and with an exposed surface opposite to the die bonding pad. The exposed surface is surrounded by the resin package in the in-plane direction of the exposed surface.Type: GrantFiled: November 20, 2017Date of Patent: October 15, 2019Assignee: ROHM CO., LTD.Inventors: Masahiko Kobayakawa, Kazuhiro Mireba, Shintaro Yasuda, Junichi Itai, Taisuke Okada
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Publication number: 20190229247Abstract: The present disclosure provides a light emitting diode (LED) package, which ensures the reliability during use while adopting an LED chip of higher output. The LED package includes an LED chip (30), which has a front (30A) and a back (30B) facing opposite sides in the thickness direction z, and a first back electrode (302A) provided at the back surface (30B); a first terminal (201) in conduction with the first back electrode (302A); and a first bonding layer (311), configured to bond the first back electrode (302A) and the first terminal 201; wherein the composition of the first bonding layer (311) includes a metal eutectic composition containing Au, and when the LED chip (30) is viewed in the thickness direction z, a first bent portion (311A) which is recessed toward the inner side of the periphery of the first back electrode (302A) is formed in the first bonding layer (311).Type: ApplicationFiled: October 19, 2018Publication date: July 25, 2019Inventors: Yosuke TAKA, Tomoichiro TOYAMA, Junichi ITAI
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Patent number: 10305009Abstract: A semiconductor light emitting device includes semiconductor light source, a resin package surrounding the semiconductor light source, and a lead fixed to the resin package. The lead is provided with a die bonding pad for bonding the semiconductor light source, and with an exposed surface opposite to the die bonding pad The exposed surface is surrounded by the resin package in the in-plane direction of the exposed surface.Type: GrantFiled: March 28, 2018Date of Patent: May 28, 2019Assignee: ROHM CO., LTD.Inventors: Masahiko Kobayakawa, Kazuhiro Mireba, Shintaro Yasuda, Junichi Itai, Taisuke Okada
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Publication number: 20190157526Abstract: A semiconductor light emitting device includes a substrate made of resin, a first wiring and a second wiring formed on the substrate, a light emitting element disposed on the substrate and electrically connected to the first wiring and the second wiring, and a transparent sealing resin configured to seal the light emitting element. The substrate contains an acrylic resin, and the sealing resin contains silicone.Type: ApplicationFiled: January 29, 2019Publication date: May 23, 2019Inventors: Hirotaka OBUCHI, Junichi ITAI
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Patent number: 10230028Abstract: A semiconductor light emitting device includes a substrate made of resin, a first wiring and a second wiring formed on the substrate, a light emitting element disposed on the substrate and electrically connected to the first wiring and the second wiring, and a transparent sealing resin configured to seal the light emitting element. The substrate contains an acrylic resin, and the sealing resin contains silicon.Type: GrantFiled: January 2, 2018Date of Patent: March 12, 2019Assignee: Rohm Co., Ltd.Inventors: Hirotaka Obuchi, Junichi Itai