Patents by Inventor Takeshi Miyajima

Takeshi Miyajima 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: 11225217
    Abstract: An airbag apparatus includes an airbag housed deployably, and an instrument panel covering the airbag in a deploying direction and forming a design surface of a vehicle cabin. The instrument panel includes, on the design surface facing the vehicle cabin, a character line including continuous protrusions toward the deploying direction. The instrument panel includes, on a surface facing the airbag along the character line, a tear line that ruptures at the time of deployment of the airbag.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: January 18, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenji Kokubu, Masatoshi Otake, Takeshi Miyajima, Masayuki Tado
  • Publication number: 20200290550
    Abstract: An airbag apparatus includes an airbag housed deployably, and an instrument panel covering the airbag in a deploying direction and forming a design surface of a vehicle cabin. The instrument panel includes, on the design surface facing the vehicle cabin, a character line including continuous protrusions toward the deploying direction. The instrument panel includes, on a surface facing the airbag along the character line, a tear line that ruptures at the time of deployment of the airbag.
    Type: Application
    Filed: February 27, 2020
    Publication date: September 17, 2020
    Inventors: Kenji KOKUBU, Masatoshi OTAKE, Takeshi MIYAJIMA, Masayuki TADO
  • Patent number: 9368575
    Abstract: A semiconductor device having a super junction structure includes: multiple first columns extending in a current flowing direction; and multiple second columns extending in the current flowing direction. The first and second columns are alternately arranged in an alternating direction. Each first column provides a drift layer. The first and second columns have a boundary therebetween, from which a depletion layer expands in case of an off-state. At least one of the first columns and the second columns have an impurity dose, which is inhomogeneous by location with respect to the alternating direction.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: June 14, 2016
    Assignee: DENSO COPORATION
    Inventor: Takeshi Miyajima
  • Publication number: 20140077289
    Abstract: A semiconductor device having a super junction structure includes: multiple first columns extending in a current flowing direction; and multiple second columns extending in the current flowing direction. The first and second columns are alternately arranged in an alternating direction. Each first column provides a drift layer. The first and second columns have a boundary therebetween, from which a depletion layer expands in case of an off-state. At least one of the first columns and the second columns have an impurity dose, which is inhomogeneous by location with respect to the alternating direction.
    Type: Application
    Filed: November 27, 2013
    Publication date: March 20, 2014
    Applicant: DENSO CORPORATION
    Inventor: Takeshi MIYAJIMA
  • Patent number: 8659082
    Abstract: A semiconductor device having a super junction structure includes: multiple first columns extending in a current flowing direction; and multiple second columns extending in the current flowing direction. The first and second columns are alternately arranged in an alternating direction. Each first column provides a drift layer. The first and second columns have a boundary therebetween, from which a depletion layer expands in case of an off-state. At least one of the first columns and the second columns have an impurity dose, which is inhomogeneous by location with respect to the alternating direction.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: February 25, 2014
    Assignee: DENSO CORPORATION
    Inventor: Takeshi Miyajima
  • Patent number: 8421154
    Abstract: A semiconductor device having a super junction structure includes: multiple first columns extending in a current flowing direction; and multiple second columns extending in the current flowing direction. The first and second columns are alternately arranged in an alternating direction. Each first column provides a drift layer. The first and second columns have a boundary therebetween, from which a depletion layer expands in case of an off-state. At least one of the first columns and the second columns have an impurity dose, which is inhomogeneous by location with respect to the alternating direction.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: April 16, 2013
    Assignee: DENSO CORPORATION
    Inventor: Takeshi Miyajima
  • Publication number: 20120068298
    Abstract: A semiconductor device having a super junction structure includes: multiple first columns extending in a current flowing direction; and multiple second columns extending in the current flowing direction. The first and second columns are alternately arranged in an alternating direction. Each first column provides a drift layer. The first and second columns have a boundary therebetween, from which a depletion layer expands in case of an off-state. At least one of the first columns and the second columns have an impurity dose, which is inhomogeneous by location with respect to the alternating direction.
    Type: Application
    Filed: November 30, 2011
    Publication date: March 22, 2012
    Applicant: DENSO CORPORATION
    Inventor: Takeshi MIYAJIMA
  • Patent number: 8106453
    Abstract: A semiconductor device having a super junction structure includes: multiple first columns extending in a current flowing direction; and multiple second columns extending in the current flowing direction. The first and second columns are alternately arranged in an alternating direction. Each first column provides a drift layer. The first and second columns have a boundary therebetween, from which a depletion layer expands in case of an off-state. At least one of the first columns and the second columns have an impurity dose, which is inhomogeneous by location with respect to the alternating direction.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: January 31, 2012
    Assignee: DENSO CORPORATION
    Inventor: Takeshi Miyajima
  • Patent number: 8018028
    Abstract: A semiconductor device includes a semiconductor substrate, a cell region, an outer peripheral region, a field plate, an outermost peripheral ring, outer peripheral region layer, an insulator film, and a Zener diode. The semiconductor substrate has a superjunction structure. The outer peripheral region is disposed at an outer periphery of the cell region. The Zener diode is disposed on the insulator film for electrically connecting the field plate with the outermost peripheral ring. The Zener diode has a first conductivity type region and a second conductivity type region that are alternately arranged in a direction from the cell region to the outer peripheral region.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: September 13, 2011
    Assignee: DENSO CORPORATION
    Inventor: Takeshi Miyajima
  • Patent number: 8008768
    Abstract: A semiconductor device and a method of manufacturing the same are disclosed. The semiconductor device includes: a casing, a board and a semiconductor chip. The chip includes: an element part; a heat sink bonded to the element part; an insulting layer located on the heat sink so that the heat sink is located between the element part and the insulating layer; and a side wall insulating layer covering all of end faces of the heat sink. The semiconductor chip is located between the casing and the board, so that the insulating layer is directed to the casing to enable heat radiation from the heat sink toward the casing via the insulating layer.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: August 30, 2011
    Assignee: DENSO CORPORATION
    Inventor: Takeshi Miyajima
  • Publication number: 20110133328
    Abstract: A semiconductor device and a method of manufacturing the same are disclosed. The semiconductor device includes: a casing, a board and a semiconductor chip. The chip includes: an element part; a heat sink bonded to the element part; an insulting layer located on the heat sink so that the heat sink is located between the element part and the insulating layer; and a side wall insulating layer covering all of end faces of the heat sink. The semiconductor chip is located between the casing and the board, so that the insulating layer is directed to the casing to enable heat radiation from the heat sink toward the casing via the insulating layer.
    Type: Application
    Filed: February 10, 2011
    Publication date: June 9, 2011
    Applicant: DENSO CORPORATION
    Inventor: Takeshi MIYAJIMA
  • Publication number: 20110095303
    Abstract: A semiconductor device includes a semiconductor substrate, a cell region, an outer peripheral region, a field plate, an outermost peripheral ring, outer peripheral region layer, an insulator film, and a Zener diode. The semiconductor substrate has a superjunction structure. The outer peripheral region is disposed at an outer periphery of the cell region. The Zener diode is disposed on the insulator film for electrically connecting the field plate with the outermost peripheral ring. The Zener diode has a first conductivity type region and a second conductivity type region that are alternately arranged in a direction from the cell region to the outer peripheral region.
    Type: Application
    Filed: December 29, 2010
    Publication date: April 28, 2011
    Applicant: DENSO CORPORATION
    Inventor: Takeshi MIYAJIMA
  • Patent number: 7932132
    Abstract: A semiconductor device and a method of manufacturing the same are disclosed. The semiconductor device includes: a casing, a board and a semiconductor chip. The chip includes: an element part; a heat sink bonded to the element part; an insulating layer located on the heat sink so that the heat sink is located between the element part and the insulating layer; and a side wall insulating layer covering all of end faces of the heat sink. The semiconductor chip is located between the casing and the board, so that the insulating layer is directed to the casing to enable heat radiation from the heat sink toward the casing via the insulating layer.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: April 26, 2011
    Assignee: DENSO CORPORATION
    Inventor: Takeshi Miyajima
  • Patent number: 7910411
    Abstract: A semiconductor device includes a semiconductor substrate, a cell region, an outer peripheral region, a field plate, an outermost peripheral ring, outer peripheral region layer, an insulator film, and a Zener diode. The semiconductor substrate has a superjunction structure. The outer peripheral region is disposed at an outer periphery of the cell region. The Zener diode is disposed on the insulator film for electrically connecting the field plate with the outermost peripheral ring. The Zener diode has a first conductivity type region and a second conductivity type region that are alternately arranged in a direction from the cell region to the outer peripheral region.
    Type: Grant
    Filed: January 3, 2008
    Date of Patent: March 22, 2011
    Assignee: DENSO CORPORATION
    Inventor: Takeshi Miyajima
  • Patent number: 7858475
    Abstract: A manufacturing method of a semiconductor device includes: forming multiple trenches on a semiconductor substrate; forming a second conductive type semiconductor film in each trench to provide a first column with the substrate between two trenches and a second column with the second conductive type semiconductor film in the trench, the first and second columns alternately repeated along with a predetermined direction; thinning a second side of the substrate; and increasing an impurity concentration in a thinned second side so that a first conductive type layer is provided. The impurity concentration of the first conductive type layer is higher than the first column. The first column provides a drift layer so that a vertical type first-conductive-type channel transistor is formed.
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: December 28, 2010
    Assignee: DENSO CORPORATION
    Inventors: Hitoshi Yamaguchi, Takeshi Miyajima, Nozomu Akagi
  • Publication number: 20100112765
    Abstract: A manufacturing method of a semiconductor device includes: forming multiple trenches on a semiconductor substrate; forming a second conductive type semiconductor film in each trench to provide a first column with the substrate between two trenches and a second column with the second conductive type semiconductor film in the trench, the first and second columns alternately repeated along with a predetermined direction; thinning a second side of the substrate; and increasing an impurity concentration in a thinned second side so that a first conductive type layer is provided. The impurity concentration of the first conductive type layer is higher than the first column. The first column provides a drift layer so that a vertical type first-conductive-type channel transistor is formed.
    Type: Application
    Filed: November 9, 2009
    Publication date: May 6, 2010
    Applicant: DENSO CORPORATION
    Inventors: Hitoshi Yamaguchi, Takeshi Miyajima, Nozomu Akagi
  • Patent number: 7635622
    Abstract: A manufacturing method of a semiconductor device includes: forming multiple trenches on a semiconductor substrate; forming a second conductive type semiconductor film in each trench to provide a first column with the substrate between two trenches and a second column with the second conductive type semiconductor film in the trench, the first and second columns alternately repeated along with a predetermined direction; thinning a second side of the substrate; and increasing an impurity concentration in a thinned second side so that a first conductive type layer is provided. The impurity concentration of the first conductive type layer is higher than the first column. The first column provides a drift layer so that a vertical type first-conductive-type channel transistor is formed.
    Type: Grant
    Filed: August 9, 2007
    Date of Patent: December 22, 2009
    Assignee: DENSO CORPORATION
    Inventors: Hitoshi Yamaguchi, Takeshi Miyajima
  • Publication number: 20090227070
    Abstract: A semiconductor device and a method of manufacturing the same are disclosed. The semiconductor device includes: a casing, a board and a semiconductor chip. The chip includes: an element part; a heat sink bonded to the element part; an insulting layer located on the heat sink so that the heat sink is located between the element part and the insulating layer; and a side wall insulating layer covering all of end faces of the heat sink. The semiconductor chip is located between the casing and the board, so that the insulating layer is directed to the casing to enable heat radiation from the heat sink toward the casing via the insulating layer.
    Type: Application
    Filed: February 24, 2009
    Publication date: September 10, 2009
    Applicant: DENSO CORPORATION
    Inventor: Takeshi Miyajima
  • Publication number: 20080173935
    Abstract: A semiconductor device includes a semiconductor substrate, a cell region, an outer peripheral region, a field plate, an outermost peripheral ring, outer peripheral region layer, an insulator film, and a Zener diode. The semiconductor substrate has a superjunction structure. The outer peripheral region is disposed at an outer periphery of the cell region. The Zener diode is disposed on the insulator film for electrically connecting the field plate with the outermost peripheral ring. The Zener diode has a first conductivity type region and a second conductivity type region that are alternately arranged in a direction from the cell region to the outer peripheral region.
    Type: Application
    Filed: January 3, 2008
    Publication date: July 24, 2008
    Applicant: DENSO CORPORATION
    Inventor: Takeshi Miyajima
  • Publication number: 20080038850
    Abstract: A manufacturing method of a semiconductor device includes: forming multiple trenches on a semiconductor substrate; forming a second conductive type semiconductor film in each trench to provide a first column with the substrate between two trenches and a second column with the second conductive type semiconductor film in the trench, the first and second columns alternately repeated along with a predetermined direction; thinning a second side of the substrate; and increasing an impurity concentration in a thinned second side so that a first conductive type layer is provided. The impurity concentration of the first conductive type layer is higher than the first column. The first column provides a drift layer so that a vertical type first-conductive-type channel transistor is formed.
    Type: Application
    Filed: August 9, 2007
    Publication date: February 14, 2008
    Applicant: DENSO CORPORATION
    Inventors: Hitoshi Yamaguchi, Takeshi Miyajima