Patents by Inventor Mami Miyasaka

Mami Miyasaka 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: 8497997
    Abstract: A semiconductor device includes an alignment mark. A probe beam is scanned on the alignment mark so as to detect a position coordinate of the alignment mark, and the alignment mark comprises a plurality of bar marks which are arranged in a first predetermined interval along a first direction of scanning the detection beam. Each of the plurality of bar marks comprises a plurality of interconnection marks which are arranged along a second direction orthogonal to the first direction, and a first space between adjacent two of the plurality of interconnection marks is shorter than a wavelength of the detection beam within a range of a design constraint.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: July 30, 2013
    Assignee: Renesas Electronics Corporation
    Inventor: Mami Miyasaka
  • Patent number: 8487305
    Abstract: A semiconductor device includes a semiconductor substrate, and an insulating layer that is provided on the semiconductor substrate, wherein, in an internal circuit formation region of the insulating layer, a via hole and an interconnect trench, that is formed on the via hole and communicates with the via hole, are provided, in the via hole and the interconnect trench, a conductor is provided so as to integrally fill the via hole and said interconnect trench, in a dicing region of the insulating layer, a groove portion and an opening, that communicates with the groove portion and is formed to cover the groove portion when the semiconductor substrate is seen in plane view, are formed, and in the groove portion and the opening, a conductor is provided so as to integrally fill the groove portion and the opening.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: July 16, 2013
    Assignee: Renesas Electronics Corporation
    Inventors: Manabu Iguchi, Mami Miyasaka
  • Publication number: 20120161335
    Abstract: A semiconductor device includes a semiconductor substrate, and an insulating layer that is provided on the semiconductor substrate, wherein, in an internal circuit formation region of the insulating layer, a via hole and an interconnect trench that is formed on the via hole and communicates with the via hole are provided, in the via hole and the interconnect trench, a conductor is provided so as to integrally bury the via hole and said interconnect trench, in a dicing region of the insulating layer, a groove portion and an opening that communicates with the groove portion and is formed to cover the groove portion when the semiconductor substrate is seen in plane view from the side of the substrate surface are formed, and in the groove portion and the opening, a conductor is provided so as to integrally bury the groove portion and the opening.
    Type: Application
    Filed: March 7, 2012
    Publication date: June 28, 2012
    Applicant: Renesas Electronics Corporation
    Inventors: Manabu Iguchi, Mami Miyasaka
  • Patent number: 8158446
    Abstract: A method of manufacturing a semiconductor device includes: forming a groove portion in a dicing region of an insulating layer and forming a via hole in an internal circuit formation region; providing a first resist film on the insulating layer; providing a second resist film to cover the first resist film; forming an interconnect opening in a region covering an internal circuit formation region of the second resist film and forming a position aligning opening in a region covering the dicing region of the second resist film; and detecting a positional relationship between the groove portion and the position aligning opening so as to detect whether the interconnect opening of the second resist film exists at a predetermined position with respect to the via hole of the insulating layer. In selective removing of the second resist film, the position aligning opening is formed such that a region of the position aligning opening covers the groove portion of the insulating layer.
    Type: Grant
    Filed: July 6, 2009
    Date of Patent: April 17, 2012
    Assignee: Renesas Electronics Corporation
    Inventors: Manabu Iguchi, Mami Miyasaka
  • Publication number: 20100321705
    Abstract: A semiconductor device includes an alignment mark. A probe beam is scanned on the alignment mark so as to detect a position coordinate of the alignment mark, and the alignment mark comprises a plurality of bar marks which are arranged in a first predetermined interval along a first direction of scanning the detection beam. Each of the plurality of bar marks comprises a plurality of interconnection marks which are arranged along a second direction orthogonal to the first direction, and a first space between adjacent two of the plurality of interconnection marks is shorter than a wavelength of the detection beam within a range of a design constraint.
    Type: Application
    Filed: May 28, 2010
    Publication date: December 23, 2010
    Applicant: Renesas Electronics Corpora
    Inventor: Mami Miyasaka
  • Publication number: 20100001380
    Abstract: A method of manufacturing a semiconductor device includes: forming a groove portion in a dicing region of an insulating layer and forming a via hole in an internal circuit formation region; providing a first resist film on the insulating layer; providing a second resist film to cover the first resist film; forming an interconnect opening in a region covering an internal circuit formation region of the second resist film and forming a position aligning opening in a region covering the dicing region of the second resist film; and detecting a positional relationship between the groove portion and the position aligning opening so as to detect whether the interconnect opening of the second resist film exists at a predetermined position with respect to the via hole of the insulating layer. In selective removing of the second resist film, the position aligning opening is formed such that a region of the position aligning opening covers the groove portion of the insulating layer.
    Type: Application
    Filed: July 6, 2009
    Publication date: January 7, 2010
    Applicant: NEC Electronics Corporation
    Inventors: Manabu Iguchi, Mami Miyasaka
  • Patent number: 6958201
    Abstract: An electron beam exposure mask comprises a main mask and one or more compensation masks. The main mask has a plurality of first defined masks. The compensation mask includes one or more non-defective second defined masks each having a pattern configuration to be formed in a defective among said first defined masks. In performing exposures by using this electron beam exposure mask, first defined masks are used as long as the first defined masks are non-defective, and the second defined mask corresponding to a first defined mask is used when the first defined mask is defective.
    Type: Grant
    Filed: September 8, 2003
    Date of Patent: October 25, 2005
    Assignee: NEC Electronics Corporation
    Inventor: Mami Miyasaka
  • Patent number: 6861657
    Abstract: An electron beam exposure mask comprises a main mask and one or more compensation masks. The main mask has a plurality of first defined masks. The compensation mask includes one or more non-defective second defined masks each having a pattern configuration to be formed in a defective among said first defined masks. In performing exposures by using this electron beam exposure mask, first defined masks are used as long as the first defined masks are non-defective, and the second defined mask corresponding to a first defined mask is used when the first defined mask is defective.
    Type: Grant
    Filed: September 8, 2003
    Date of Patent: March 1, 2005
    Assignee: NEC Electronics Corporation
    Inventor: Mami Miyasaka
  • Publication number: 20040056215
    Abstract: An electron beam exposure mask comprises a main mask and one or more compensation masks. The main mask has a plurality of first defined masks. The compensation mask includes one or more non-defective second defined masks each having a pattern configuration to be formed in a defective among said first defined masks. In performing exposures by using this electron beam exposure mask, first defined masks are used as long as the first defined masks are non-defective, and the second defined mask corresponding to a first defined mask is used when the first defined mask is defective.
    Type: Application
    Filed: September 8, 2003
    Publication date: March 25, 2004
    Inventor: Mami Miyasaka
  • Publication number: 20040048169
    Abstract: An electron beam exposure mask comprises a main mask and one or more compensation masks. The main mask has a plurality of first defined masks. The compensation mask includes one or more non-defective second defined masks each having a pattern configuration to be formed in a defective among said first defined masks. In performing exposures by using this electron beam exposure mask, first defined masks are used as long as the first defined masks are non-defective, and the second defined mask corresponding to a first defined mask is used when the first defined mask is defective.
    Type: Application
    Filed: September 8, 2003
    Publication date: March 11, 2004
    Inventor: Mami Miyasaka
  • Patent number: 6645676
    Abstract: An electron beam exposure mask comprises a main mask and one or more compensation masks. The main mask has a plurality of first defined masks. The compensation mask includes one or more non-defective second defined masks each having a pattern configuration to be formed in a defective among said first defined masks. In performing exposures by using this electron beam exposure mask, first defined masks are used as long as the first defined masks are non-defective, and the second defined mask corresponding to a first defined mask is used when the first defined mask is defective.
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: November 11, 2003
    Assignee: NEC Electronics Corporation
    Inventor: Mami Miyasaka
  • Patent number: 6352802
    Abstract: A mask for electron beam exposure used in a process for exposing a wafer with predetermined patterns for a chip by an EB projection lithography system. The mask comprises: a grillage area; a plurality of thin film areas surrounded by the grillage area and having a thickness thinner than that of the grillage area; and a plurality of mask pattern areas each of which is formed within respective one of the thin film areas. Each of the mask pattern areas has mask patterns corresponding to patterns of a subfield obtained by dividing the patterns for a chip into a plurality of areas having substantially the same shape and size. The wafer is exposed with predetermined patterns for a chip by performing, for each of the mask pattern areas, a step of irradiating an electron beam onto the mask for electron beam exposure such that the center of an area irradiated by the electron beam coincides with the center of each of the mask pattern areas.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: March 5, 2002
    Assignee: NEC Corporation
    Inventor: Mami Miyasaka