Patents by Inventor Seiya Isozaki

Seiya Isozaki 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: 11387172
    Abstract: A pad is formed on an interlayer insulating film, art insulating film is formed on the interlayer insulating film to cover the pad, and an opening portion exposing a part of the pad is formed in the insulating film. A metal film electrically connected to the pad is formed on the pad exposed from the opening portion and on the insulating film. The metal film integrally includes a first portion on the pad exposed from the opening portion and a second portion on the insulating film. An upper surface of the metal film has a wire bonding region for bonding a wire to the metal film and a probe contact region for bringing the probe into contact with the metal film, the wire bonding region is located on the first portion of the metal film, and the probe contact region is located on the second portion of the metal film.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: July 12, 2022
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Yoshinori Deguchi, Iwao Natori, Seiya Isozaki
  • Patent number: 11211349
    Abstract: A semiconductor device comprising: bonding pads formed in the first wiring layer; and first wirings and a second wiring formed in a second wiring layer provided one layer below the first wiring layer. Here, a power supply potential and a reference potential are to be supplied to each first wiring and the second wiring, respectively. Also, in transparent plan view, each of the first wirings is arranged next to each other, and is arranged at a first position of the second wiring layer, that is overlapped with the bonding region of the first bonding pad. Also, in transparent plan view, the second wiring is arranged at a second position of the second wiring layer, that is overlapped with a first region located between the first bonding pad and the second bonding pad. Further, a width of each first wiring is less than a width of the second wiring.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: December 28, 2021
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Seiya Isozaki, Tatsuya Kobayashi, Kota Jinno
  • Publication number: 20210057361
    Abstract: A semiconductor device comprising: bonding pads formed in the first wiring layer; and first wirings and a second wiring formed in a second wiring layer provided one layer below the first wiring layer. Here, a power supply potential and a reference potential are to be supplied to each first wiring and the second wiring, respectively. Also, in transparent plan view, each of the first wirings is arranged next to each other, and is arranged at a first position of the second wiring layer, that is overlapped with the bonding region of the first bonding pad. Also, in transparent plan view, the second wiring is arranged at a second position of the second wiring layer, that is overlapped with a first region located between the first bonding pad and the second bonding pad. Further, a width of each first wiring is less than a width of the second wiring.
    Type: Application
    Filed: June 24, 2020
    Publication date: February 25, 2021
    Inventors: Seiya ISOZAKI, Tatsuya KOBAYASHI, Kota JINNO
  • Publication number: 20190295930
    Abstract: A pad is formed on an interlayer insulating film, art insulating film is formed on the interlayer insulating film to cover the pad, and an opening portion exposing a part of the pad is formed in the insulating film. A metal film electrically connected to the pad is formed on the pad exposed from the opening portion and on the insulating film. The metal film integrally includes a first portion on the pad exposed from the opening portion and a second portion on the insulating film. An upper surface of the metal film has a wire bonding region for bonding a wire to the metal film and a probe contact region for bringing the probe into contact with the metal film, the wire bonding region is located on the first portion of the metal film, and the probe contact region is located on the second portion of the metal film.
    Type: Application
    Filed: February 21, 2019
    Publication date: September 26, 2019
    Inventors: Yoshinori DEGUCHI, Iwao NATORI, Seiya ISOZAKI
  • Patent number: 10347604
    Abstract: To provide a semiconductor device having improved reliability. A method of manufacturing the semiconductor device includes connecting a wire comprised of copper with a conductive layer formed on the pad electrode of a semiconductor chip, heat treating the semiconductor chip, and then sealing the semiconductor chip and the wire with a resin.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: July 9, 2019
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Yuki Yagyu, Seiya Isozaki
  • Patent number: 10181450
    Abstract: A pad formed in a semiconductor chip is formed such that a thickness of an aluminum film in a wire bonding portion is smaller than that of an aluminum film in a peripheral portion covered with a protective film. On the other hand, a thickness of a wiring formed in the same step as the pad is larger than that of the pad in the wire bonding portion. The main conductive film of the pad in the wire bonding portion is comprised of only one layer of a first aluminum film, while the main conductive film of the wiring is comprised of at least two layers of aluminum films (the first aluminum film and a second aluminum film) in any region of the wiring.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: January 15, 2019
    Assignee: Renesas Electronics Corporation
    Inventors: Seiya Isozaki, Takashi Moriyama, Takehiko Maeda
  • Publication number: 20180277511
    Abstract: To provide a semiconductor device having improved reliability. A method of manufacturing the semiconductor device includes connecting a wire comprised of copper with a conductive layer formed on the pad electrode of a semiconductor chip, heat treating the semiconductor chip, and then sealing the semiconductor chip and the wire with a resin.
    Type: Application
    Filed: February 21, 2018
    Publication date: September 27, 2018
    Applicant: Renesas Electronics Corporation
    Inventors: Yuki YAGYU, Seiya ISOZAKI
  • Publication number: 20170287868
    Abstract: A pad formed in a semiconductor chip is formed such that a thickness of an aluminum film in a wire bonding portion is smaller than that of an aluminum film in a peripheral portion covered with a protective film. On the other hand, a thickness of a wiring formed in the same step as the pad is larger than that of the pad in the wire bonding portion. The main conductive film of the pad in the wire bonding portion is comprised of only one layer of a first aluminum film, while the main conductive film of the wiring is comprised of at least two layers of aluminum films (the first aluminum film and a second aluminum film) in any region of the wiring.
    Type: Application
    Filed: February 1, 2017
    Publication date: October 5, 2017
    Inventors: Seiya ISOZAKI, Takashi MORIYAMA, Takehiko MAEDA
  • Patent number: 7994614
    Abstract: Provided is a semiconductor wafer with a scribe line region and a plurality of element forming regions partitioned by the scribe line region, the semiconductor wafer including: conductive patterns formed in the scribe line region; and an island-shaped passivation film formed above at least a conductive pattern, which is or may be exposed to a side surface of a semiconductor chip obtained by dicing the semiconductor wafer along the scribe line region, among the conductive patterns, so that the island-shaped passivation film is opposed to the conductive pattern.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: August 9, 2011
    Assignee: Renesas Electronics Corporation
    Inventors: Kouji Tanaka, Seiya Isozaki
  • Publication number: 20090243044
    Abstract: Provided is a semiconductor wafer with a scribe line region and a plurality of element forming regions partitioned by the scribe line region, the semiconductor wafer including: conductive patterns formed in the scribe line region; and an island-shaped passivation film formed above at least a conductive pattern, which is or may be exposed to a side surface of a semiconductor chip obtained by dicing the semiconductor wafer along the scribe line region, among the conductive patterns, so that the island-shaped passivation film is opposed to the conductive pattern.
    Type: Application
    Filed: March 18, 2009
    Publication date: October 1, 2009
    Applicant: NEC Electronics Corporation
    Inventors: Kouji Tanaka, Seiya Isozaki
  • Patent number: 6608384
    Abstract: A semiconductor device includes a bonding-structure for electrically and mechanically bonding a solder ball to the electrode pad. The bonding-structure includes flexible arms that are connected to a common supporting layer that allows a relative displacement of the solder ball in relation to the semiconductor chip. The arms extending in one direction are supported by one supporting layer and the arms extending in an opposite direction are supported by another supporting layer.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: August 19, 2003
    Assignee: Nec Corporation
    Inventor: Seiya Isozaki
  • Patent number: 6400034
    Abstract: A semiconductor device allowing a finer terminal pitch, a low profile, and easy product inspection is disclosed. A semiconductor device includes a semiconductor chip and a film substrate having the semiconductor chip connected thereon. The film substrate includes an insulating film having a plurality of openings formed in a desired pattern and a wiring layer formed in a chip-connecting surface of the insulating film. Solder balls are each directly bonded to the external connection pads through the openings. The wiring layer includes substrate pads each being connected to the chip pads of the semiconductor chip, and external connection pads each being electrically connected to these substrate pads. The external connection pads are each formed over the openings so that the openings are covered with the external connection pads on the chip-connecting surface of the insulating film, respectively.
    Type: Grant
    Filed: July 12, 2000
    Date of Patent: June 4, 2002
    Assignee: NEC Corporation
    Inventors: Takehiro Kimura, Seiya Isozaki
  • Publication number: 20020017725
    Abstract: The present invention provides a semiconductor device comprising: a semiconductor chip having at least an electrode pad; at least a solder material; and at least a bonding-structure for electrically and mechanically bonding the solder material to the electrode pad, wherein the bonding-structure has a flexibility and allows a relative displacement of the solder material in relation to the semiconductor chip.
    Type: Application
    Filed: August 3, 2001
    Publication date: February 14, 2002
    Applicant: NEC Corporation
    Inventor: Seiya Isozaki
  • Patent number: 5610440
    Abstract: In a semiconductor device comprising a semiconductor chip, a heat radiation plate mounting the semiconductor chip thereon and having a plurality of rounded corner portions of a first radius, a ceramic substrate for mounting the heat radiation plate, and a metallize pattern formed onto the ceramic substrate for soldering the heat radiation plate onto the ceramic substrate, the metallize pattern has a plurality of rounded corner portions of a second radius. The metallize pattern is larger than the heat radiation plate in area. The first radius is greater than the second radius.
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: March 11, 1997
    Assignee: NEC Corporation
    Inventor: Seiya Isozaki