Patents by Inventor Toichi Nagahara

Toichi Nagahara 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).

  • Patent number: 10978379
    Abstract: A semiconductor part includes a resin package and an exposed portion exposed from a bottom surface of the resin package. The exposed portion has a first diagonal line perpendicular to both first and third sides of the package as viewed from the bottom surface. The exposed portion also has a second diagonal line perpendicular to both the second fourth side in the bottom view. A first lead terminal portion opposes the exposed portion and has a first shape in the bottom view. A second lead terminal portion, also opposing the exposed portion, has a second shape in the bottom view. A third lead terminal portion opposing the exposed portion, also has the second shape in the bottom view. A fourth lead terminal portion, similarly opposed to the exposed portion, likewise has the second shape in the bottom view.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: April 13, 2021
    Assignee: ROHM CO., LTD.
    Inventors: Akihiro Koga, Toichi Nagahara
  • Publication number: 20190385937
    Abstract: A semiconductor part includes a resin package and an exposed portion exposed from a bottom surface of the resin package. The exposed portion has a first diagonal line perpendicular to both first and third sides of the package as viewed from the bottom surface. The exposed portion also has a second diagonal line perpendicular to both the second fourth side in the bottom view. A first lead terminal portion opposes the exposed portion and has a first shape in the bottom view. A second lead terminal portion, also opposing the exposed portion, has a second shape in the bottom view. A third lead terminal portion opposing the exposed portion, also has the second shape in the bottom view. A fourth lead terminal portion, similarly opposed to the exposed portion, likewise has the second shape in the bottom view.
    Type: Application
    Filed: August 27, 2019
    Publication date: December 19, 2019
    Inventors: Akihiro KOGA, Toichi NAGAHARA
  • Patent number: 10431527
    Abstract: A semiconductor part includes a resin package and an exposed portion exposed from a bottom surface of the resin package. The exposed portion has a first diagonal line perpendicular to both first and third sides of the package as viewed from the bottom surface. The exposed portion also has a second diagonal line perpendicular to both the second fourth side in the bottom view. A first lead terminal portion opposes the exposed portion and has a first shape in the bottom view. A second lead terminal portion, also opposing the exposed portion, has a second shape in the bottom view. A third lead terminal portion opposing the exposed portion, also has the second shape in the bottom view. A fourth lead terminal portion, similarly opposed to the exposed portion, likewise has the second shape in the bottom view.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: October 1, 2019
    Assignee: ROHM CO., LTD.
    Inventors: Akihiro Koga, Toichi Nagahara
  • Patent number: 10163850
    Abstract: A semiconductor device according to the present invention includes a semiconductor chip, an electrode pad made of a metal material containing aluminum and formed on a top surface of the semiconductor chip, an electrode lead disposed at a periphery of the semiconductor chip, a bonding wire having a linearly-extending main body portion and having a pad bond portion and a lead bond portion formed at respective ends of the main body portion and respectively bonded to the electrode pad and the electrode lead, and a resin package sealing the semiconductor chip, the electrode lead, and the bonding wire, the bonding wire is made of copper, and the entire electrode pad and the entire pad bond portion are integrally covered by a water-impermeable film.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: December 25, 2018
    Assignee: ROHM CO., LTD.
    Inventors: Motoharu Haga, Shingo Yoshida, Yasumasa Kasuya, Toichi Nagahara, Akihiro Kimura, Kenji Fujii
  • Publication number: 20180138108
    Abstract: A semiconductor part includes a resin package and an exposed portion exposed from a bottom surface of the resin package. The exposed portion has a first diagonal line perpendicular to both first and third sides of the package as viewed from the bottom surface. The exposed portion also has a second diagonal line perpendicular to both the second fourth side in the bottom view. A first lead terminal portion opposes the exposed portion and has a first shape in the bottom view. A second lead terminal portion, also opposing the exposed portion, has a second shape in the bottom view. A third lead terminal portion opposing the exposed portion, also has the second shape in the bottom view. A fourth lead terminal portion, similarly opposed to the exposed portion, likewise has the second shape in the bottom view.
    Type: Application
    Filed: January 12, 2018
    Publication date: May 17, 2018
    Applicant: ROHM CO., LTD.
    Inventors: Akihiro KOGA, Toichi NAGAHARA
  • Patent number: 9899299
    Abstract: A semiconductor part includes a resin package and an exposed portion exposed from a bottom surface of the resin package. The exposed portion has a first diagonal line perpendicular to both first and third sides of the package as viewed from the bottom surface. The exposed portion also has a second diagonal line perpendicular to both the second fourth side in the bottom view. A first lead terminal portion opposes the exposed portion and has a first shape in the bottom view. A second lead terminal portion, also opposing the exposed portion, has a second shape in the bottom view. A third lead terminal portion opposing the exposed portion, also has the second shape in the bottom view. A fourth lead terminal portion, similarly opposed to the exposed portion, likewise has the second shape in the bottom view.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: February 20, 2018
    Assignee: ROHM CO., LTD.
    Inventors: Akihiro Koga, Toichi Nagahara
  • Publication number: 20180005981
    Abstract: A semiconductor device according to the present invention includes a semiconductor chip, an electrode pad made of a metal material containing aluminum and formed on a top surface of the semiconductor chip, an electrode lead disposed at a periphery of the semiconductor chip, a bonding wire having a linearly-extending main body portion and having a pad bond portion and a lead bond portion formed at respective ends of the main body portion and respectively bonded to the electrode pad and the electrode lead, and a resin package sealing the semiconductor chip, the electrode lead, and the bonding wire, the bonding wire is made of copper, and the entire electrode pad and the entire pad bond portion are integrally covered by a water-impermeable film.
    Type: Application
    Filed: September 18, 2017
    Publication date: January 4, 2018
    Applicant: ROHM CO., LTD.
    Inventors: Motoharu HAGA, Shingo YOSHIDA, Yasumasa KASUYA, Toichi NAGAHARA, Akihiro KIMURA, Kenji FUJII
  • Patent number: 9847282
    Abstract: A semiconductor device includes a resin package, a semiconductor chip sealed in the package and having first and second pads on a front surface. An island of the device has a projecting terminal sealed in the package, to one surface of which a back surface of the chip is bonded, and the other surface of which is partially exposed from a bottom surface of the package as a first terminal. A lead separate from the island is sealed in the package and has one surface electrically connected with the second pad, and another surface exposed from the package bottom surface as a second terminal capable of electrical connection between the second pad and outside. A mass center of the chip is away from a center of the package, the projecting terminal is as large as the lead, and solder under the device spreads to the island projecting terminal.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: December 19, 2017
    Assignee: ROHM CO., LTD.
    Inventors: Akihiro Koga, Toichi Nagahara
  • Publication number: 20170294368
    Abstract: A semiconductor part includes a resin package and an exposed portion exposed from a bottom surface of the resin package. The exposed portion has a first diagonal line perpendicular to both first and third sides of the package as viewed from the bottom surface. The exposed portion also has a second diagonal line perpendicular to both the second fourth side in the bottom view. A first lead terminal portion opposes the exposed portion and has a first shape in the bottom view. A second lead terminal portion, also opposing the exposed portion, has a second shape in the bottom view. A third lead terminal portion opposing the exposed portion, also has the second shape in the bottom view. A fourth lead terminal portion, similarly opposed to the exposed portion, likewise has the second shape in the bottom view.
    Type: Application
    Filed: June 27, 2017
    Publication date: October 12, 2017
    Applicant: ROHM CO., LTD.
    Inventors: Akihiro KOGA, Toichi NAGAHARA
  • Patent number: 9780069
    Abstract: A semiconductor device according to the present invention includes a semiconductor chip, an electrode pad made of a metal material containing aluminum and formed on a top surface of the semiconductor chip, an electrode lead disposed at a periphery of the semiconductor chip, a bonding wire having a linearly-extending main body portion and having a pad bond portion and a lead bond portion formed at respective ends of the main body portion and respectively bonded to the electrode pad and the electrode lead, and a resin package sealing the semiconductor chip, the electrode lead, and the bonding wire, the bonding wire is made of copper, and the entire electrode pad and the entire pad bond portion are integrally covered by a water-impermeable film.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: October 3, 2017
    Assignee: ROHM CO., LTD.
    Inventors: Motoharu Haga, Shingo Yoshida, Yasumasa Kasuya, Toichi Nagahara, Akihiro Kimura, Kenji Fujii
  • Publication number: 20170162480
    Abstract: A semiconductor device includes a resin package, a semiconductor chip sealed in the package and having first and second pads on a front surface. An island of the device has a projecting terminal sealed in the package, to one surface of which a back surface of the chip is bonded, and the other surface of which is partially exposed from a bottom surface of the package as a first terminal. A lead separate from the island is sealed in the package and has one surface electrically connected with the second pad, and another surface exposed from the package bottom surface as a second terminal capable of electrical connection between the second pad and outside. A mass center of the chip is away from a center of the package, the projecting terminal is as large as the lead, and solder under the device spreads to the island projecting terminal.
    Type: Application
    Filed: February 24, 2017
    Publication date: June 8, 2017
    Applicant: ROHM CO., LTD.
    Inventors: Akihiro KOGA, Toichi NAGAHARA
  • Patent number: 9613890
    Abstract: A semiconductor device includes a resin package, a semiconductor chip sealed in the package and having first and second pads on a front surface. An island of the device has a projecting terminal sealed in the package, to one surface of which a back surface of the chip is bonded, and the other surface of which is partially exposed from a bottom surface of the package as a first terminal. A lead separate from the island is sealed in the package and has one surface electrically connected with the second pad, and another surface exposed from the package bottom surface as a second terminal capable of electrical connection between the second pad and outside. A mass center of the chip is away from a center of the package, the projecting terminal is as large as the lead, and solder under the device spreads to the island projecting terminal.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: April 4, 2017
    Assignee: ROHM CO., LTD.
    Inventors: Akihiro Koga, Toichi Nagahara
  • Publication number: 20160307827
    Abstract: A semiconductor device includes a resin package, a semiconductor chip sealed in the package and having first and second pads on a front surface. An island of the device has a projecting terminal sealed in the package, to one surface of which a back surface of the chip is bonded, and the other surface of which is partially exposed from a bottom surface of the package as a first terminal. A lead separate from the island is sealed in the package and has one surface electrically connected with the second pad, and another surface exposed from the package bottom surface as a second terminal capable of electrical connection between the second pad and outside. A mass center of the chip is away from a center of the package, the projecting terminal is as large as the lead, and solder under the device spreads to the island projecting terminal.
    Type: Application
    Filed: June 24, 2016
    Publication date: October 20, 2016
    Applicant: ROHM CO., LTD.
    Inventors: Akihiro KOGA, Toichi NAGAHARA
  • Patent number: 9379047
    Abstract: A semiconductor device of the present invention includes a resin package, a semiconductor chip sealed in the resin package, and having first and second pads on a front surface, a lead integrated island sealed in the resin package, to one surface of which a back surface of the semiconductor chip is bonded, and the other surface of an opposite side to the one surface of which is partially exposed from a bottom surface of the resin package as a first pad connecting terminal for electrical connection between the first pad and outside and a back connecting terminal for electrical connection between the back surface of the semiconductor chip and outside separately from each other, and a lead formed separately from the lead integrated island, sealed in the resin package, one surface of which is connected with the second pad by a wire, and the other surface of an opposite side to the one surface of which is exposed from a bottom surface of the resin package as a second pad connecting terminal for electrical connectio
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: June 28, 2016
    Assignee: ROHM CO., LTD.
    Inventors: Akihiro Koga, Toichi Nagahara
  • Patent number: 9343394
    Abstract: A semiconductor device of the present invention includes a resin package, a semiconductor chip sealed in the resin package, and having first and second pads on a front surface, a lead integrated island sealed in the resin package, to one surface of which a back surface of the semiconductor chip is bonded, and the other surface of an opposite side to the one surface of which is partially exposed from a bottom surface of the resin package as a first pad connecting terminal for electrical connection between the first pad and outside and a back connecting terminal for electrical connection between the back surface of the semiconductor chip and outside separately from each other, and a lead formed separately from the lead integrated island, sealed in the resin package, one surface of which is connected with the second pad by a wire, and the other surface of an opposite side to the one surface of which is exposed from a bottom surface of the resin package as a second pad connecting terminal for electrical connectio
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: May 17, 2016
    Assignee: ROHM CO., LTD.
    Inventors: Akihiro Koga, Toichi Nagahara
  • Publication number: 20150228565
    Abstract: A semiconductor device of the present invention includes a resin package, a semiconductor chip sealed in the resin package, and having first and second pads on a front surface, a lead integrated island sealed in the resin package, to one surface of which a back surface of the semiconductor chip is bonded, and the other surface of an opposite side to the one surface of which is partially exposed from a bottom surface of the resin package as a first pad connecting terminal for electrical connection between the first pad and outside and a back connecting terminal for electrical connection between the back surface of the semiconductor chip and outside separately from each other, and a lead formed separately from the lead integrated island, sealed in the resin package, one surface of which is connected with the second pad by a wire, and the other surface of an opposite side to the one surface of which is exposed from a bottom surface of the resin package as a second pad connecting terminal for electrical connectio
    Type: Application
    Filed: April 22, 2015
    Publication date: August 13, 2015
    Applicant: ROHM CO., LTD.
    Inventors: Akihiro KOGA, Toichi NAGAHARA
  • Publication number: 20150228564
    Abstract: A semiconductor device of the present invention includes a resin package, a semiconductor chip sealed in the resin package, and having first and second pads on a front surface, a lead integrated island sealed in the resin package, to one surface of which a back surface of the semiconductor chip is bonded, and the other surface of an opposite side to the one surface of which is partially exposed from a bottom surface of the resin package as a first pad connecting terminal for electrical connection between the first pad and outside and a back connecting terminal for electrical connection between the back surface of the semiconductor chip and outside separately from each other, and a lead formed separately from the lead integrated island, sealed in the resin package, one surface of which is connected with the second pad by a wire, and the other surface of an opposite side to the one surface of which is exposed from a bottom surface of the resin package as a second pad connecting terminal for electrical connectio
    Type: Application
    Filed: April 22, 2015
    Publication date: August 13, 2015
    Applicant: ROHM CO., LTD.
    Inventors: Akihiro KOGA, Toichi NAGAHARA
  • Publication number: 20150200181
    Abstract: A semiconductor device according to the present invention includes a semiconductor chip, an electrode pad made of a metal material containing aluminum and formed on a top surface of the semiconductor chip, an electrode lead disposed at a periphery of the semiconductor chip, a bonding wire having a linearly-extending main body portion and having a pad bond portion and a lead bond portion formed at respective ends of the main body portion and respectively bonded to the electrode pad and the electrode lead, and a resin package sealing the semiconductor chip, the electrode lead, and the bonding wire, the bonding wire is made of copper, and the entire electrode pad and the entire pad bond portion are integrally covered by a water-impermeable film.
    Type: Application
    Filed: March 20, 2015
    Publication date: July 16, 2015
    Applicant: ROHM CO., LTD.
    Inventors: Motoharu HAGA, Shingo YOSHIDA, Yasumasa KASUYA, Toichi NAGAHARA, Akihiro KIMURA, Kenji FUJII
  • Patent number: 9035441
    Abstract: A semiconductor device of the present invention includes a resin package, a semiconductor chip sealed in the resin package, and having first and second pads on a front surface, a lead integrated island sealed in the resin package, to one surface of which a back surface of the semiconductor chip is bonded, and the other surface of an opposite side to the one surface of which is partially exposed from a bottom surface of the resin package as a first pad connecting terminal for electrical connection between the first pad and outside and a back connecting terminal for electrical connection between the back surface of the semiconductor chip and outside separately from each other, and a lead formed separately from the lead integrated island, sealed in the resin package, one surface of which is connected with the second pad by a wire, and the other surface of an opposite side to the one surface of which is exposed from a bottom surface of the resin package as a second pad connecting terminal for electrical connectio
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: May 19, 2015
    Assignee: ROHM CO., LTD.
    Inventors: Akihiro Koga, Toichi Nagahara
  • Publication number: 20140138810
    Abstract: A semiconductor device of the present invention includes a resin package, a semiconductor chip sealed in the resin package, and having first and second pads on a front surface, a lead integrated island sealed in the resin package, to one surface of which a back surface of the semiconductor chip is bonded, and the other surface of an opposite side to the one surface of which is partially exposed from a bottom surface of the resin package as a first pad connecting terminal for electrical connection between the first pad and outside and a back connecting terminal for electrical connection between the back surface of the semiconductor chip and outside separately from each other, and a lead formed separately from the lead integrated island, sealed in the resin package, one surface of which is connected with the second pad by a wire, and the other surface of an opposite side to the one surface of which is exposed from a bottom surface of the resin package as a second pad connecting terminal for electrical connectio
    Type: Application
    Filed: January 21, 2014
    Publication date: May 22, 2014
    Applicant: ROHM CO., LTD.
    Inventors: Akihiro KOGA, Toichi NAGAHARA