Patents by Inventor Kazuo Tomita

Kazuo Tomita 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).

  • Publication number: 20110012224
    Abstract: In a semiconductor device having element isolation made of a trench-type isolating oxide film 13, large and small dummy patterns 11 of two types, being an active region of a dummy, are located in an isolating region 10, the large dummy patterns 11b are arranged at a position apart from actual patterns 9, and the small dummy patterns 11a are regularly arranged in a gap at around a periphery of the actual patterns 9, whereby uniformity of an abrading rate is improved at a time of abrading an isolating oxide film 13a is improved, and surface flatness of the semiconductor device becomes preferable.
    Type: Application
    Filed: September 27, 2010
    Publication date: January 20, 2011
    Applicant: RENESAS ELECTRONICS CORPORATION
    Inventor: Kazuo TOMITA
  • Publication number: 20110012225
    Abstract: In a semiconductor device having element isolation made of a trench-type isolating oxide film 13, large and small dummy patterns 11 of two types, being an active region of a dummy, are located in an isolating region 10, the large dummy patterns 11b are arranged at a position apart from actual patterns 9, and the small dummy patterns 11a are regularly arranged in a gap at around a periphery of the actual patterns 9, whereby uniformity of an abrading rate is improved at a time of abrading an isolating oxide film 13a is improved, and surface flatness of the semiconductor device becomes preferable.
    Type: Application
    Filed: September 27, 2010
    Publication date: January 20, 2011
    Applicant: RENESAS ELECTRONICS CORPORATION
    Inventor: Kazuo TOMITA
  • Publication number: 20110001242
    Abstract: The present invention provides a semiconductor device capable of preventing occurrence of cracking and the like, taking a large area, where wiring and the like that function as elemental devices can be arranged, within a plurality of interlayer insulation films, and reducing production cost. The semiconductor device according to the present invention has a low dielectric constant film having a dielectric constant of not less than 2.7. In the low dielectric constant film and the like, materials (e.g., a first dummy pattern, a second dummy pattern) with a larger hardness than that of the low dielectric constant film are formed at a part under a pad part.
    Type: Application
    Filed: September 17, 2010
    Publication date: January 6, 2011
    Applicant: Renesas Technology Corporation
    Inventor: Kazuo TOMITA
  • Patent number: 7843066
    Abstract: The present invention provides a semiconductor device capable of preventing occurrence of cracking and the like, taking a large area, where wiring and the like that function as elemental devices can be arranged, within a plurality of interlayer insulation films, and reducing production cost. The semiconductor device according to the present invention has a low dielectric constant film having a dielectric constant of not less than 2.7. In the low dielectric constant film and the like, materials (e.g., a first dummy pattern, a second dummy pattern) with a larger hardness than that of the low dielectric constant film are formed at a part under a pad part.
    Type: Grant
    Filed: August 3, 2009
    Date of Patent: November 30, 2010
    Assignee: Renesas Technologies Corporation
    Inventor: Kazuo Tomita
  • Patent number: 7825489
    Abstract: In a semiconductor device having element isolation made of a trench-type isolating oxide film 13, large and small dummy patterns 11 of two types, being an active region of a dummy, are located in an isolating region 10, the large dummy patterns 11b are arranged at a position apart from actual patterns 9, and the small dummy patterns 11a are regularly arranged in a gap at around a periphery of the actual patterns 9, whereby uniformity of an abrading rate is improved at a time of abrading an isolating oxide film 13a is improved, and surface flatness of the semiconductor device becomes preferable.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: November 2, 2010
    Assignee: Renesas Electronics Corporation
    Inventor: Kazuo Tomita
  • Patent number: 7719078
    Abstract: In a semiconductor device having element isolation made of a trench-type isolating oxide film 13, large and small dummy patterns 11 of two types, being an active region of a dummy, are located in an isolating region 10, the large dummy patterns 11b are arranged at a position apart from actual patterns 9, and the small dummy patterns 11a are regularly arranged in a gap at around a periphery of the actual patterns 9, whereby uniformity of an abrading rate is improved at a time of abrading an isolating oxide film 13a is improved, and surface flatness of the semiconductor device becomes preferable.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: May 18, 2010
    Assignee: Renesas Technology Corp.
    Inventor: Kazuo Tomita
  • Publication number: 20090289373
    Abstract: The present invention provides a semiconductor device capable of preventing occurrence of cracking and the like, taking a large area, where wiring and the like that function as elemental devices can be arranged, within a plurality of interlayer insulation films, and reducing production cost. The semiconductor device according to the present invention has a low dielectric constant film having a dielectric constant of not less than 2.7. In the low dielectric constant film and the like, materials (e.g., a first dummy pattern, a second dummy pattern) with a larger hardness than that of the low dielectric constant film are formed at a part under a pad part.
    Type: Application
    Filed: August 3, 2009
    Publication date: November 26, 2009
    Applicant: Renesas Technology Corp.
    Inventor: Kazuo Tomita
  • Patent number: 7605085
    Abstract: First wirings and first dummy wirings are formed in a p-SiOC film formed on a substrate. A p-SiOC film is formed, and a cap film is formed on the p-SiOC film. A dual damascene wiring, including vias connected to the first wirings and the second wirings, is formed in the cap film and the p-SiOC film 22. Dummy vias are formed on the periphery of isolated vias.
    Type: Grant
    Filed: September 18, 2006
    Date of Patent: October 20, 2009
    Assignees: Renesas Technology Corp., Panasonic Corporation
    Inventors: Kazuo Tomita, Keiji Hashimoto, Yasutaka Nishioka, Susumu Matsumoto, Mitsuru Sekiguchi, Akihisa Iwasaki
  • Patent number: 7550815
    Abstract: In a semiconductor device having element isolation made of a trench-type isolating oxide film 13, large and small dummy patterns 11 of two types, being an active region of a dummy, are located in an isolating region 10, the large dummy patterns 11b are arranged at a position apart from actual patterns 9, and the small dummy patterns 11a are regularly arranged in a gap at around a periphery of the actual patterns 9, whereby uniformity of an abrading rate is improved at a time of abrading an isolating oxide film 13a is improved, and surface flatness of the semiconductor device becomes preferable.
    Type: Grant
    Filed: August 9, 2007
    Date of Patent: June 23, 2009
    Assignee: Renesas Technology Corp.
    Inventor: Kazuo Tomita
  • Publication number: 20090072345
    Abstract: In a semiconductor device having element isolation made of a trench-type isolating oxide film 13, large and small dummy patterns 11 of two types, being an active region of a dummy, are located in an isolating region 10, the large dummy patterns 11b are arranged at a position apart from actual patterns 9, and the small dummy patterns 11a are regularly arranged in a gap at around a periphery of the actual patterns 9, whereby uniformity of an abrading rate is improved at a time of abrading an isolating oxide film 13a is improved, and surface flatness of the semiconductor device becomes preferable.
    Type: Application
    Filed: November 5, 2008
    Publication date: March 19, 2009
    Applicant: RENESAS TECHNOLOGY CORP.
    Inventor: Kazuo TOMITA
  • Publication number: 20090072346
    Abstract: In a semiconductor device having element isolation made of a trench-type isolating oxide film 13, large and small dummy patterns 11 of two types, being an active region of a dummy, are located in an isolating region 10, the large dummy patterns 11b are arranged at a position apart from actual patterns 9, and the small dummy patterns 11a are regularly arranged in a gap at around a periphery of the actual patterns 9, whereby uniformity of an abrading rate is improved at a time of abrading an isolating oxide film 13a is improved, and surface flatness of the semiconductor device becomes preferable.
    Type: Application
    Filed: November 5, 2008
    Publication date: March 19, 2009
    Applicant: RENESAS TECHNOLOGY CORP.
    Inventor: Kazuo TOMITA
  • Publication number: 20090032847
    Abstract: A semiconductor wafer and a manufacturing method for a semiconductor device are provided, which prevent peeling-off of films and pattern skipping in a wafer edge portion. A silicone substrate has formed thereon gate structures in active regions isolated by a trench isolation film; a contact interlayer film; and a multilayer interconnection structure formed by alternate laminations of low-k via interlayer films, i.e., V layers, and low-k interconnect interlayer films, i.e., M layers. In a Fine layer ranging from first to fifth interlayer films, the M layers are removed from the wafer edge portion, but the V layers are not removed therefrom. Further, the contact interlayer film is not removed from the wafer edge portion.
    Type: Application
    Filed: July 31, 2008
    Publication date: February 5, 2009
    Inventor: Kazuo Tomita
  • Publication number: 20080315366
    Abstract: The present invention provides a technique for improving the reliability of a semiconductor device where spreading of cracking that occurs at the time of dicing to a seal ring can be restricted even in a semiconductor device with a low-k film used as an a interlayer insulating film. Dummy vias are formed in each layer on a dicing region side. The dummy vias are formed at the same intervals in a matrix as viewed in a top view. Even in the case where cracking occurs at the time of dicing, the cracking can be prevented from spreading to a seal ring by the dummy vias. As a result, resistance to moisture absorbed in a circuit formation region can be improved, and deterioration in reliability can be prevented.
    Type: Application
    Filed: April 22, 2008
    Publication date: December 25, 2008
    Applicant: Renesas Technology Corp.
    Inventor: Kazuo TOMITA
  • Publication number: 20080296777
    Abstract: The present invention provides a semiconductor device capable of preventing occurrence of cracking and the like, taking a large area, where wiring and the like that function as elemental devices can be arranged, within a plurality of interlayer insulation films, and reducing production cost. The semiconductor device according to the present invention has a low dielectric constant film having a dielectric constant of not less than 2.7. In the low dielectric constant film and the like, materials (e.g., a first dummy pattern, a second dummy pattern) with a larger hardness than that of the low dielectric constant film are formed at a part under a pad part.
    Type: Application
    Filed: August 6, 2008
    Publication date: December 4, 2008
    Applicant: Renesas Technology Corp.
    Inventor: Kazuo TOMITA
  • Publication number: 20080283961
    Abstract: In a semiconductor device having element isolation made of a trench-type isolating oxide film 13, large and small dummy patterns 11 of two types, being an active region of a dummy, are located in an isolating region 10, the large dummy patterns 11b are arranged at a position apart from actual patterns 9, and the small dummy patterns 11a are regularly arranged in a gap at around a periphery of the actual patterns 9, whereby uniformity of an abrading rate is improved at a time of abrading an isolating oxide film 13a is improved, and surface flatness of the semiconductor device becomes preferable.
    Type: Application
    Filed: August 9, 2007
    Publication date: November 20, 2008
    Applicant: RENESAS TECHNOLOGY CORP.
    Inventor: Kazuo Tomita
  • Patent number: 7420278
    Abstract: The present invention provides a semiconductor device capable of preventing occurrence of cracking and the like, taking a large area, where wiring and the like that function as elemental devices can be arranged, within a plurality of interlayer insulation films, and reducing production cost. The semiconductor device according to the present invention has a low dielectric constant film having a dielectric constant of not less than 2.7. In the low dielectric constant film and the like, materials (e.g., a first dummy pattern, a second dummy pattern) with a larger hardness than that of the low dielectric constant film are formed at a part under a pad part.
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: September 2, 2008
    Assignee: Renesas Technology Corp.
    Inventor: Kazuo Tomita
  • Patent number: 7400028
    Abstract: The present invention provides a technique for improving the reliability of a semiconductor device where spreading of cracking that occurs at the time of dicing to a seal ring can be restricted even in a semiconductor device with a low-k film used as an interlayer insulating film. Dummy vias are formed in each layer on a dicing region side. The dummy vias are formed at the same intervals in a matrix as viewed in a top view. Even in the case where cracking occurs at the time of dicing, the cracking can be prevented from spreading to a seal ring by the dummy vias. As a result, resistance to moisture absorbed in a circuit formation region can be improved, and deterioration in reliability can be prevented.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: July 15, 2008
    Assignee: Renesas Technology Corp.
    Inventor: Kazuo Tomita
  • Patent number: 7304365
    Abstract: In a semiconductor device having element isolation made of a trench-type isolating oxide film 13, large and small dummy patterns 11 of two types, being an active region of a dummy, are located in an isolating region 10, the large dummy patterns 11b are arranged at a position apart from actual patterns 9, and the small dummy patterns 11a are regularly arranged in a gap at around a periphery of the actual patterns 9, whereby uniformity of an abrading rate is improved at a time of abrading an isolating oxide film 13a is improved, and surface flatness of the semiconductor device becomes preferable.
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: December 4, 2007
    Assignee: Renesas Technology Corp.
    Inventor: Kazuo Tomita
  • Patent number: 7225659
    Abstract: A punch press tool includes a cylindrical punch guide in which a punch body provided with a punch tip for press forming is fit slidably. The punch tip consists of an appropriate number of long forming punch tips each including a press forming portion in the leading end thereof. The punch tip also consists of an appropriate number of clamping punch tips each with a shorter length compared with the forming punch tips. Both of the tips are attached to the punch body detachably and exchangeably.
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: June 5, 2007
    Assignee: Amada Company, Limited
    Inventor: Kazuo Tomita
  • Publication number: 20070007658
    Abstract: First wirings and first dummy wirings are formed in a p-SiOC film formed on a substrate. A p-SiOC film is formed, and a cap film is formed on the p-SiOC film. A dual damascene wiring, including vias connected to the first wirings and the second wirings, is formed in the cap film and the p-SiOC film 22. Dummy vias are formed on the periphery of isolated vias.
    Type: Application
    Filed: September 18, 2006
    Publication date: January 11, 2007
    Applicants: RENESAS TECHNOLOGY CORP., MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Kazuo TOMITA, Keiji HASHIMOTO, Yasutaka NISHIOKA, Susumu MATSUMOTO, Mitsuru SEKIGUCHI, Akihisa IWASAKI