Patents by Inventor Noboru Morimoto

Noboru Morimoto 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: 10892363
    Abstract: A semiconductor device includes: a semiconductor substrate having a cell region in which a device is provided, and a termination region provided around the cell region; a first insulating film provided on the semiconductor substrate in the termination region and having a plurality of openings; a plurality of metal electrodes provided in the termination region and connected to the semiconductor substrate via the plurality of openings; and a second insulating film having lower coefficient of moisture absorption than that of the first insulating film and covering the first insulating film and the plurality of metal electrodes, wherein the second insulating film is in direct contact with the semiconductor substrate in a region from the outermost electrode of the plurality of metal electrodes to an end part of the semiconductor substrate.
    Type: Grant
    Filed: April 15, 2020
    Date of Patent: January 12, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventor: Noboru Morimoto
  • Publication number: 20200243680
    Abstract: A semiconductor device includes: a semiconductor substrate having a cell region in which a device is provided, and a termination region provided around the cell region; a first insulating film provided on the semiconductor substrate in the termination region and having a plurality of openings; a plurality of metal electrodes provided in the termination region and connected to the semiconductor substrate via the plurality of openings; and a second insulating film having lower coefficient of moisture absorption than that of the first insulating film and covering the first insulating film and the plurality of metal electrodes, wherein the second insulating film is in direct contact with the semiconductor substrate in a region from the outermost electrode of the plurality of metal electrodes to an end part of the semiconductor substrate.
    Type: Application
    Filed: April 15, 2020
    Publication date: July 30, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventor: Noboru MORIMOTO
  • Patent number: 10686068
    Abstract: A semiconductor device includes: a semiconductor substrate having a cell region in which a device is provided, and a termination region provided around the cell region; a first insulating film provided on the semiconductor substrate in the termination region and having a plurality of openings; a plurality of metal electrodes provided in the termination region and connected to the semiconductor substrate via the plurality of openings; and a second insulating film having lower coefficient of moisture absorption than that of the first insulating film and covering the first insulating film and the plurality of metal electrodes, wherein the second insulating film is in direct contact with the semiconductor substrate in a region from the outermost electrode of the plurality of metal electrodes to an end part of the semiconductor substrate.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: June 16, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventor: Noboru Morimoto
  • Publication number: 20190305140
    Abstract: A semiconductor device includes: a semiconductor substrate having a cell region in which a device is provided, and a termination region provided around the cell region; a first insulating film provided on the semiconductor substrate in the termination region and having a plurality of openings; a plurality of metal electrodes provided in the termination region and connected to the semiconductor substrate via the plurality of openings; and a second insulating film having lower coefficient of moisture absorption than that of the first insulating film and covering the first insulating film and the plurality of metal electrodes, wherein the second insulating film is in direct contact with the semiconductor substrate in a region from the outermost electrode of the plurality of metal electrodes to an end part of the semiconductor substrate.
    Type: Application
    Filed: October 17, 2018
    Publication date: October 3, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventor: Noboru MORIMOTO
  • Patent number: 8169080
    Abstract: A seal ring is provided between a region where a circuit is formed on a semiconductor substrate and a dicing region. The seal ring has a portion where sealing layers of which the cross sectional form is in T-shape are layered and a portion where sealing layers of which the cross sectional form is rectangular are layered.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: May 1, 2012
    Assignee: Renesas Electronics Corporation
    Inventors: Noboru Morimoto, Masahiko Fujisawa, Daisuke Kodama
  • Patent number: 8008730
    Abstract: To provide a manufacturing method of a semiconductor device which can improve the reliability of the semiconductor device. A first insulating film for covering a semiconductor element formed in a semiconductor substrate is formed by a thermal CVD method or the like which has a good embedding property. A second insulating film is formed to cover the first insulating film by a plasma CVD method which has excellent humidity resistance. A plug is formed to penetrate the first insulating film and the second insulating film. A third insulating film comprised of a low-k film having a relatively low dielectric constant is formed over the second insulating film. A wiring is formed in the third insulating film by a damascene technique to be electrically coupled to the plug.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: August 30, 2011
    Assignee: Renesas Electronics Corporation
    Inventors: Shoichi Fukui, Noboru Morimoto, Yasutaka Nishioka, Junko Izumitani, Atsushi Ishii
  • Publication number: 20110101530
    Abstract: A seal ring is provided between a region where a circuit is formed on a semiconductor substrate and a dicing region. The seal ring has a portion where sealing layers of which the cross sectional form is in T-shape are layered and a portion where sealing layers of which the cross sectional form is rectangular are layered.
    Type: Application
    Filed: November 5, 2010
    Publication date: May 5, 2011
    Applicant: Renesas Technology Corp.
    Inventors: Noboru MORIMOTO, Masahiko Fujisawa, Daisuke Kodama
  • Patent number: 7884011
    Abstract: A seal ring is provided between a region where a circuit is formed on a semiconductor substrate and a dicing region. The seal ring has a portion where sealing layers of which the cross sectional form is in T-shape are layered and a portion where sealing layers of which the cross sectional form is rectangular are layered.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: February 8, 2011
    Assignee: Renesas Electronics Corporation
    Inventors: Noboru Morimoto, Masahiko Fujisawa, Daisuke Kodama
  • Publication number: 20100167525
    Abstract: A seal ring is provided between a region where a circuit is formed on a semiconductor substrate and a dicing region. The seal ring has a portion where sealing layers of which the cross sectional form is in T-shape are layered and a portion where sealing layers of which the cross sectional form is rectangular are layered.
    Type: Application
    Filed: March 10, 2010
    Publication date: July 1, 2010
    Applicant: Renesas Technology Corp.
    Inventors: Noboru Morimoto, Masahiko Fujisawa, Daisuke Kodama
  • Patent number: 7714413
    Abstract: A seal ring is provided between a region where a circuit is formed on a semiconductor substrate and a dicing region. The seal ring has a portion where sealing layers of which the cross sectional form is in T-shape are layered and a portion where sealing layers of which the cross sectional form is rectangular are layered.
    Type: Grant
    Filed: October 19, 2006
    Date of Patent: May 11, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Noboru Morimoto, Masahiko Fujisawa, Daisuke Kodama
  • Publication number: 20100052062
    Abstract: To provide a manufacturing method of a semiconductor device which can improve the reliability of the semiconductor device. A first insulating film for covering a semiconductor element formed in a semiconductor substrate is formed by a thermal CVD method or the like which has a good embedding property. A second insulating film is formed to cover the first insulating film by a plasma CVD method which has excellent humidity resistance. A plug is formed to penetrate the first insulating film and the second insulating film. A third insulating film comprised of a low-k film having a relatively low dielectric constant is formed over the second insulating film. A wiring is formed in the third insulating film by a damascene technique to be electrically coupled to the plug.
    Type: Application
    Filed: July 13, 2009
    Publication date: March 4, 2010
    Inventors: Shoichi Fukui, Noboru Morimoto, Yasutaka Nishioka, Junko Izumitani, Atsushi Ishii
  • Publication number: 20070090447
    Abstract: A seal ring is provided between a region where a circuit is formed on a semiconductor substrate and a dicing region. The seal ring has a portion where sealing layers of which the cross sectional form is in T-shape are layered and a portion where sealing layers of which the cross sectional form is rectangular are layered.
    Type: Application
    Filed: October 19, 2006
    Publication date: April 26, 2007
    Applicant: Renesas Technology Corp.
    Inventors: Noboru MORIMOTO, Masahiko Fujisawa, Daisuke Kodama
  • Publication number: 20060103025
    Abstract: A semiconductor device includes a low dielectric constant film having a copper interconnection formed therein, a silicon oxide film arranged above the low dielectric constant film, a surface protection film arranged above the silicon oxide film, a sealing ring formed to surround a circuit forming region, and a groove portion formed outside the sealing ring when viewed two-dimensionally. The groove portion is formed such that its bottom portion is located above the low dielectric constant film and such that the bottom portion is located below an upper end of the copper interconnection.
    Type: Application
    Filed: November 14, 2005
    Publication date: May 18, 2006
    Applicant: Renesas Technology Corp.
    Inventors: Takeshi Furusawa, Masahiro Matsumoto, Noboru Morimoto, Masazumi Matsuura
  • Patent number: 6780769
    Abstract: A metal layer (7), a metallic compound layer (8) and a metal layer (9) are stacked in this order when viewed from the side of a first copper interconnect line (2) and an interlayer insulating film (5) to constitute a second conductive barrier layer (20). As the material for the metal layers (7) and (9), an element having an atomic weight higher than that of copper such as tungsten (W) or tantalum (Ta) is applicable. A second copper interconnect line (6) is conductively connected to the first copper interconnect line (2) at a contact hole (12) through the second conductive barrier layer (20). As the ratio of the volume of the second copper interconnect line (6) at the region for filling a trench (11) to the volume of the second copper interconnect line (6) at the region for filling the contact hole (12) increases, tensile stress to be concentrated at the contact hole (12) becomes greater. As a result, a void is likely to be generated in the contact hole (12).
    Type: Grant
    Filed: June 19, 2003
    Date of Patent: August 24, 2004
    Assignee: Renesas Technology Corp.
    Inventors: Masahiko Fujisawa, Akihiko Ohsaki, Noboru Morimoto
  • Patent number: 6737319
    Abstract: A method of manufacturing a semiconductor device is obtained which is capable of evading generation of a short circuit between wirings in an upper wiring layer even if a part of an upper surface of an FSG film is exposed by variations in a production step. After a USG film (4) is deposited to a thickness of 1 &mgr;m over an entire surface of an FSG film (3), the USG film (4) is polished and removed by a thickness of 900 nm from an upper surface thereof by the CMP method. At this time, a part of an upper surface of the FSG film (3) is exposed by variations in a production step. Next, the surface of the interlayer dielectric film (50) is cleaned with a cleaning liquid whose etching rate to the FSG film (3) and etching rate to the USG film (5) are substantially the same. Such a cleaning liquid may be, for example, an ammonia hydrogen peroxide mixture of NH4OH:H2O2:H2O=1:1:20. The structure shown in FIG.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: May 18, 2004
    Assignee: Renesas Technology Corp.
    Inventors: Noboru Morimoto, Masazumi Matsuura, Kinya Goto
  • Patent number: 6734489
    Abstract: A second-level wire is formed by a dual damascene process in a insulating film. In an upper surface of the first insulating film a metal film is formed and serves as a first electrode of an MIM-type capacitor. A second insulating films has a structure in which a plurality of insulating films are layered on a second interconnection layer, in this order. In a first insulating film of the plurality of insulating films, a second electrode of the MIM-type capacitor is formed. The second electrode has a first metal film formed on a second insulating film of the plurality of the insulating films and a second metal film is formed on the first metal film. A portion of the second insulating film which is sandwiched between the first electrode and the second electrode of the MIM-type capacitor serves as a capacitor dielectric film of the MIM-type capacitor.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: May 11, 2004
    Assignee: Renesas Technology Corp.
    Inventors: Noboru Morimoto, Kinya Goto, Masahiro Matsumoto
  • Patent number: 6664641
    Abstract: A wire width and a wiring space of each of signal wires 1 and ground/power wires 2 are determined to be a wire width W1 (the minimum wire width) and a wiring space S1, respectively. A wire width and a wiring space of the via-hole neighboring region 1a or 2a are determined to be a wire width W2 (>W1) and a wiring space S2 (<S1), respectively. The wire widths W1 and W2 and the wiring spaces S1 and S2 are respectively determined so as to maintain the minimum wiring pitch P. The wiring space S1 is determined also so as to satisfy {S1/P≧0.6}. Further, the signal wires 1 and the ground/power wires 2 have the same wire thickness of a wire thickness T1 which allows an aspect ratio (T1/W1) to be equal to, or higher than, 2.
    Type: Grant
    Filed: October 2, 2002
    Date of Patent: December 16, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Akihiko Ohsaki, Masahiko Fujisawa, Noboru Morimoto
  • Publication number: 20030205825
    Abstract: A metal layer (7), a metallic compound layer (8) and a metal layer (9) are stacked in this order when viewed from the side of a first copper interconnect line (2) and an interlayer insulating film (5) to constitute a second conductive barrier layer (20). As the material for the metal layers (7) and (9), an element having an atomic weight higher than that of copper such as tungsten (W) or tantalum (Ta) is applicable. A second copper interconnect line (6) is conductively connected to the first copper interconnect line (2) at a contact hole (12) through the second conductive barrier layer (20). As the ratio of the volume of the second copper interconnect line (6) at the region for filling a trench (11) to the volume of the second copper interconnect line (6) at the region for filling the contact hole (12) increases, tensile stress to be concentrated at the contact hole (12) becomes greater. As a result, a void is likely to be generated in the contact hole (12).
    Type: Application
    Filed: June 19, 2003
    Publication date: November 6, 2003
    Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventors: Masahiko Fujisawa, Akihiko Ohsaki, Noboru Morimoto
  • Publication number: 20030189224
    Abstract: A wire width and a wiring space of each of signal wires 1 and ground/power wires 2 are determined to be a wire width W1 (the minimum wire width) and a wiring space S1, respectively. A wire width and a wiring space of the via-hole neighboring region 1a or 2a are determined to be a wire width W2 (>W1) and a wiring space S2 (<S1), respectively. The wire widths W1 and W2 and the wiring spaces S1 and S2 are respectively determined so as to maintain the minimum wiring pitch P. The wiring space S1 is determined also so as to satisfy {S1/P≧0.6}. Further, the signal wires 1 and the ground/power wires 2 have the same wire thickness of a wire thickness T1 which allows an aspect ratio (T1/W1) to be equal to, or higher than, 2.
    Type: Application
    Filed: October 2, 2002
    Publication date: October 9, 2003
    Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventors: Akihiko Ohsaki, Masahiko Fujisawa, Noboru Morimoto
  • Patent number: 6624516
    Abstract: A metal layer (7), a metallic compound layer (8) and a metal layer (9) are stacked in this order when viewed from the side of a first copper interconnect line (2) and an interlayer insulating film (5) to constitute a second conductive barrier layer (20). As the material for the metal layers (7) and (9), an element having an atomic weight higher than that of copper such as tungsten (W) or tantalum (Ta) is applicable. A second copper interconnect line (6) is conductively connected to the first copper interconnect line (2) at a contact hole (12) through the second conductive barrier layer (20). As the ratio of the volume of the second copper interconnect line (6) at the region for filling a trench (11) to the volume of the second copper interconnect line (6) at the region for filling the contact hole (12) increases, tensile stress to be concentrated at the contact hole (12) becomes greater. As a result, a void is likely to be generated in the contact hole (12).
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: September 23, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masahiko Fujisawa, Akihiko Ohsaki, Noboru Morimoto