Patents by Inventor Kazumi Watase

Kazumi Watase 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: 7964475
    Abstract: A modified layer 5 and an altered layer 8 are formed outside a dicing point of a dicing area 3. Thus without forming another interface between different physical properties on the dicing point, it is possible to prevent chipping from progressing along a crystal orientation from an interface between a semiconductor element 2 and a semiconductor substrate 1 and from a surface of the semiconductor element during dicing, thereby suppressing the development of chipping to the semiconductor element.
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: June 21, 2011
    Assignee: Panasonic Corporation
    Inventors: Yukiko Haraguchi, Takahiro Kumakawa, Takashi Yui, Kazumi Watase
  • Patent number: 7622792
    Abstract: A conductive region electrically connected to a buffer coat film is formed on at least one corner of a semiconductor substrate, so that electricity charged on a package seal resin or a surface of the buffer coat film is allowed to flow toward the conductive region through a conductive path. Thus, density of the electricity charged on the package seal resin or the surface of the buffer coat film is lowered, and electric discharge can be suppressed. Since the electric discharge is suppressed, no high voltage is applied to an external input/output terminal. As a result, it is possible to prevent a circuit metal wire connected to an integrated circuit from being fused and an interlayer insulating film from being damaged.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: November 24, 2009
    Assignee: Panasonic Corporation
    Inventors: Kazumi Watase, Tsuyoshi Hamatani
  • Patent number: 7595557
    Abstract: A metal wire for inspection and an electrode for inspection are formed on a region of a semiconductor substrate where a metal wire and an electrode for external connection are not formed. The metal wire for inspection and the electrode for inspection electrically detect an open failure, a short-circuit failure and a leakage failure of the metal wire and a connection failure between an element electrode and the metal wire. A semiconductor wafer is subjected to an electrical test, so that it is possible to detect the aforementioned failures with good accuracy during a manufacturing process.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: September 29, 2009
    Assignee: Panasonic Corporation
    Inventors: Kazumi Watase, Akio Nakamura, Katsumi Ootani
  • Publication number: 20080135975
    Abstract: A modified layer 5 and an altered layer 8 are formed outside a dicing point of a dicing area 3. Thus without forming another interface between different physical properties on the dicing point, it is possible to prevent chipping from progressing along a crystal orientation from an interface between a semiconductor element 2 and a semiconductor substrate 1 and from a surface of the semiconductor element during dicing, thereby suppressing the development of chipping to the semiconductor element.
    Type: Application
    Filed: December 6, 2007
    Publication date: June 12, 2008
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yukiko Haraguchi, Takahiro Kumakawa, Takashi Yui, Kazumi Watase
  • Patent number: 7279357
    Abstract: A semiconductor device has a semiconductor chip, a first insulating film and an inductor. The semiconductor chip includes an integrated circuit formed on the main surface of the chip and a plurality of pad electrodes formed on the main surface of the chip and electrically connected to the integrated circuit. The first insulating film of an insulating resin material is formed on the main surface of the semiconductor chip, covers the integrated circuit, and includes a plurality of contact holes provided on the respective pad electrodes. The inductor is formed on the inductor formation region of the first insulating film, and both terminals of the inductor are connected to the pad electrodes through the contact holes, respectively. The inductor formation region of the first insulating film is formed thicker than a portion of the first insulating film around the contact hole.
    Type: Grant
    Filed: May 5, 2005
    Date of Patent: October 9, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Nozomi Shimoishizaka, Kazuyuki Kaino, Yoshifumi Nakamura, Keiji Miki, Kazumi Watase, Ryuichi Sahara
  • Publication number: 20070132096
    Abstract: A conductive region electrically connected to a buffer coat film is formed on at least one corner of a semiconductor substrate, so that electricity charged on a package seal resin or a surface of the buffer coat film is allowed to flow toward the conductive region through a conductive path. Thus, density of the electricity charged on the package seal resin or the surface of the buffer coat film is lowered, and electric discharge can be suppressed. Since the electric discharge is suppressed, no high voltage is applied to an external input/output terminal. As a result, it is possible to prevent a circuit metal wire connected to an integrated circuit from being fused and an interlayer insulating film from being damaged.
    Type: Application
    Filed: December 8, 2006
    Publication date: June 14, 2007
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazumi Watase, Tsuyoshi Hamatani
  • Publication number: 20070052106
    Abstract: A first mark formed simultaneously with the process step for forming a layer of metal interconnects is partly exposed at two parallel side surfaces of the separated semiconductor device or one side surface thereof to have a rectangular shape. This allows the identification of the orientation and product information of the semiconductor device in a small semiconductor device.
    Type: Application
    Filed: November 1, 2004
    Publication date: March 8, 2007
    Inventors: Kazumi Watase, Akio Nakamura, Minoru Fujisaku, Hiroki Naraoka, Takahiro Nakano
  • Publication number: 20060286689
    Abstract: A metal wire for inspection and an electrode for inspection are formed on a region of a semiconductor substrate where a metal wire and an electrode for external connection are not formed. The metal wire for inspection and the electrode for inspection electrically detect an open failure, a short-circuit failure and a leakage failure of the metal wire and a connection failure between an element electrode and the metal wire. A semiconductor wafer is subjected to an electrical test, so that it is possible to detect the aforementioned failures with good accuracy during a manufacturing process.
    Type: Application
    Filed: June 16, 2006
    Publication date: December 21, 2006
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazumi Watase, Akio Nakamura, Katsumi Ootani
  • Patent number: 6954001
    Abstract: The semiconductor device includes a semiconductor element having an electrode formed on a surface thereof, and a metal wiring formed on the surface of the semiconductor element and electrically connected to the electrode. The metal wiring has an external electrode portion functioning as an external electrode. A thickness of the external electrode portion is greater than that of a non-electrode portion of the metal wiring, i.e., a portion of the metal wiring other than the external electrode portion.
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: October 11, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoshifumi Nakamura, Ryuichi Sahara, Nozomi Shimoishizaka, Kazuyuki Kainou, Keiji Miki, Kazumi Watase, Yasutake Yaguchi
  • Publication number: 20050199979
    Abstract: A semiconductor device has a semiconductor chip, a first insulating film and an inductor. The semiconductor chip includes an integrated circuit formed on the main surface of the chip and a plurality of pad electrodes formed on the main surface of the chip and electrically connected to the integrated circuit. The first insulating film of an insulating resin material is formed on the main surface of the semiconductor chip, covers the integrated circuit, and includes a plurality of contact holes provided on the respective pad electrodes. The inductor is formed on the inductor formation region of the first insulating film, and both terminals of the inductor are connected to the pad electrodes through the contact holes, respectively. The inductor formation region of the first insulating film is formed thicker than a portion of the first insulating film around the contact hole.
    Type: Application
    Filed: May 5, 2005
    Publication date: September 15, 2005
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Nozomi Shimoishizaka, Kazuyuki Kaino, Yoshifumi Nakamura, Keiji Miki, Kazumi Watase, Ryuichi Sahara
  • Patent number: 6924173
    Abstract: Disclosed is a semiconductor device 10 comprising a first semiconductor element 11 with an arrangement of first element electrodes 12, a second semiconductor element 13 with an arrangement of second element electrodes 14, a connection member 15 electrically connecting together a portion 12b of the first element electrodes 12 and the second element electrodes 14, an insulation layer 17 covering a major surface 11a of the first semiconductor element 11 and a backside surface 13b of the second semiconductor element 13, a wiring layer 22 formed on the insulation layer 17 and electrically connected to the first element electrode portion 12b exposed in an opening portion 21, and an external electrode 23 formed, as a portion of the wiring layer 22, on the insulation layer 17.
    Type: Grant
    Filed: March 14, 2003
    Date of Patent: August 2, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazumi Watase, Hiroaki Fujimoto, Ryuichi Sahara, Nozomi Shimoishizaka, Takahiro Kumakawa, Kazuyuki Kaino, Yoshifumi Nakamura
  • Patent number: 6914331
    Abstract: A semiconductor device has a semiconductor chip, a first insulating film and an inductor. The semiconductor chip includes an integrated circuit formed on the main surface of the chip and a plurality of pad electrodes formed on the main surface of the chip and electrically connected to the integrated circuit. The first insulating film of an insulating resin material is formed on the main surface of the semiconductor chip, covers the integrated circuit, and includes a plurality of contact holes provided on the respective pad electrodes. The inductor is formed on the inductor formation region of the first insulating film, and both terminals of the inductor are connected to the pad electrodes through the contact holes, respectively. The inductor formation region of the first insulating film is formed thicker than a portion of the first insulating film around the contact hole.
    Type: Grant
    Filed: May 21, 2003
    Date of Patent: July 5, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Nozomi Shimoishizaka, Kazuyuki Kaino, Yoshifumi Nakamura, Keiji Miki, Kazumi Watase, Ryuichi Sahara
  • Patent number: 6852616
    Abstract: A first element electrode and a second element electrode connected electrically to a semiconductor element on a substrate are formed, and then an insulating film is formed on the substrate including the element electrodes. Thereafter, a first opening for exposing the first element electrode and a second opening for exposing the second element electrode are formed on the insulating film. Then, a first external electrode connected to the first element electrode via the first opening is formed immediately above the first element electrode. Furthermore, a second external electrode and a connecting wire having one end connected to the second element electrode via the second opening and the other end connected to the second external electrode are formed on the insulating film.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: February 8, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Ryuichi Sahara, Kazumi Watase, Takahiro Kumakawa, Kazuyuki Kainoh, Nozomi Shimoishizaka
  • Publication number: 20050012214
    Abstract: The semiconductor device includes a semiconductor element having an electrode formed on a surface thereof, and a metal wiring formed on the surface of the semiconductor element and electrically connected to the electrode. The metal wiring has an external electrode portion functioning as an external electrode. A thickness of the external electrode portion is greater than that of a non-electrode portion of the metal wiring, i.e., a portion of the metal wiring other than the external electrode portion.
    Type: Application
    Filed: August 17, 2004
    Publication date: January 20, 2005
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Yoshifumi Nakamura, Ryuichi Sahara, Nozomi Shimoishizaka, Kazuyuki Kainou, Keiji Miki, Kazumi Watase, Yasutake Yaguchi
  • Patent number: 6784557
    Abstract: The semiconductor device includes a semiconductor element having an electrode formed on a surface thereof, and a metal wiring formed on the surface of the semiconductor element and electrically connected to the electrode. The metal wiring has an external electrode portion functioning as an external electrode. A thickness of the external electrode portion is greater than that of a non-electrode portion of the metal wiring, i.e., a portion of the metal wiring other than the external electrode portion.
    Type: Grant
    Filed: December 2, 2002
    Date of Patent: August 31, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoshifumi Nakamura, Ryuichi Sahara, Nozomi Shimoishizaka, Kazuyuki Kainou, Keiji Miki, Kazumi Watase, Yasutake Yaguchi
  • Publication number: 20030218247
    Abstract: A semiconductor device has a semiconductor chip, a first insulating film and an inductor. The semiconductor chip includes an integrated circuit formed on the main surface of the chip and a plurality of pad electrodes formed on the main surface of the chip and electrically connected to the integrated circuit. The first insulating film of an insulating resin material is formed on the main surface of the semiconductor chip, covers the integrated circuit, and includes a plurality of contact holes provided on the respective pad electrodes. The inductor is formed on the inductor formation region of the first insulating film, and both terminals of the inductor are connected to the pad electrodes through the contact holes, respectively. The inductor formation region of the first insulating film is formed thicker than a portion of the first insulating film around the contact hole.
    Type: Application
    Filed: May 21, 2003
    Publication date: November 27, 2003
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Nozomi Shimoishizaka, Kazuyuki Kaino, Yoshifumi Nakamura, Keiji Miki, Kazumi Watase, Ryuichi Sahara
  • Publication number: 20030194834
    Abstract: Disclosed is a semiconductor device 10 comprising a first semiconductor element 11 with an arrangement of first element electrodes 12, a second semiconductor element 13 with an arrangement of second element electrodes 14, a connection member 15 electrically connecting together a portion 12b of the first element electrodes 12 and the second element electrodes 14, an insulation layer 17 covering a major surface 11a of the first semiconductor element 11 and a backside surface 13b of the second semiconductor element 13, a wiring layer 22 formed on the insulation layer 17 and electrically connected to the first element electrode portion 12b exposed in an opening portion 21, and an external electrode 23 formed, as a portion of the wiring layer 22, on the insulation layer 17.
    Type: Application
    Filed: March 14, 2003
    Publication date: October 16, 2003
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Kazumi Watase, Hiroaki Fujimoto, Ryuichi Sahara, Nozomi Shimoishizaka, Takahiro Kumakawa, Kazuyuki Kaino, Yoshifumi Nakamura
  • Publication number: 20030116867
    Abstract: The semiconductor device includes a semiconductor element having an electrode formed on a surface thereof, and a metal wiring formed on the surface of the semiconductor element and electrically connected to the electrode. The metal wiring has an external electrode portion functioning as an external electrode. A thickness of the external electrode portion is greater than that of a non-electrode portion of the metal wiring, i.e., a portion of the metal wiring other than the external electrode portion.
    Type: Application
    Filed: December 2, 2002
    Publication date: June 26, 2003
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoshifumi Nakamura, Ryuichi Sahara, Nozomi Shimoishizaka, Kazuyuki Kainou, Keiji Miki, Kazumi Watase, Yasutake Yaguchi
  • Patent number: 6559528
    Abstract: Disclosed is a semiconductor device 10 comprising a first semiconductor element 11 with an arrangement of first element electrodes 12, a second semiconductor element 13 with an arrangement of second element electrodes 14, a connection member 15 electrically connecting together a portion 12b of the first element electrodes 12 and the second element electrodes 14, an insulation layer 17 covering a major surface 11a of the first semiconductor element 11 and a backside surface 13b of the second semiconductor element 13, a wiring layer 22 formed on the insulation layer 17 and electrically connected to the first element electrode portion 12b exposed in an opening portion 21, and an external electrode 23 formed, as a portion of the wiring layer 22, on the insulation layer 17.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: May 6, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazumi Watase, Hiroaki Fujimoto, Ryuichi Sahara, Nozomi Shimoishizaka, Takahiro Kumakawa, Kazuyuki Kaino, Yoshifumi Nakamura
  • Patent number: 6512298
    Abstract: A first element electrode and a second element electrode connected electrically to a semiconductor element on a substrate are formed, and then an insulating film is formed on the substrate including the element electrodes. Thereafter, a first opening for exposing the first element electrode and a second opening for exposing the second element electrode are formed on the insulating film. Then, a first external electrode connected to the first element electrode via the first opening is formed immediately above the first element electrode. Furthermore, a second external electrode and a connecting wire having one end connected to the second element electrode via the second opening and the other end connected to the second external electrode are formed on the insulating film.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: January 28, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Ryuichi Sahara, Kazumi Watase, Takahiro Kumakawa, Kazuyuki Kainoh, Nozomi Shimoishizaka