Patents by Inventor Atushi Ogishima

Atushi Ogishima 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: 6503803
    Abstract: Disclosed is a method of fabricating a semiconductor device including forming an insulating film on a silicon substrate; forming a contact hole in the insulating film; depositing a titanium film to be in contact with the silicon substrate in the contact hole; and causing a heat reaction between the titanium film and the silicon substrate such that the titanium film is subjected to silicide reaction with the thickness 4 nm to 48 nm or, more preferably, with the thickness of 8 nm to 34 nm. In the instance where the contact hole is filled with doped polycrystal silicon material, the titanium film is deposited to be in contact with the polycrystal silicon in the contact hole. The silicon substrate/silicon body may have at least a MISFET formed thereon in which case the contact hole is formed to expose an active region of the MISFET, as one example.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: January 7, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Hiromi Todorobaru, Hideo Miura, Masayuki Suzuki, Shinji Nishihara, Shuji Ikeda, Masashi Sahara, Shinichi Ishida, Hiromi Abe, Atushi Ogishima, Hiroyuki Uchiyama, Sonoko Abe
  • Publication number: 20010023958
    Abstract: A semiconductor device comprises a silicon substrate, an electrical wiring metal, an insulating film formed on the silicon substrate, a plurality of contact holes formed in the insulating film for connecting the silicon substrate and the electrical wiring metal to each other, and a titanium silicide film formed in the contact holes. The thickness of the titanium silicide film is 10 nm to 120 nm, or preferably, 20 nm to 84 nm. Semiconductor regions and the electrical wiring metal are connected to each other through the titanium silicide film.
    Type: Application
    Filed: January 23, 2001
    Publication date: September 27, 2001
    Inventors: Hiromi Todorobaru, Hideo Miura, Masayuki Suzuki, Shinji Nishihara, Shuji Ikeda, Masashi Sahara, Shinichi Ishida, Hiromi Abe, Atushi Ogishima, Hiroyuki Uchiyama, Sonoko Abe
  • Publication number: 20010019180
    Abstract: A semiconductor integrated circuit device comprises a plurality of holes in an interlayer insulating film beneath a bonding pad wherein a plug is buried in the respective holes and is made of the same conductive film (W/TiN/Ti) as a plug in a through-hole. Any wire as a second layer is not formed in a lower region of the bonding pad. The plug buried in the holes is connected only to the upper boding pad and is not connected to a lower wire.
    Type: Application
    Filed: March 20, 2001
    Publication date: September 6, 2001
    Inventors: Takashi Aoyagi, Atushi Ogishima, Hirotaka Kobayashi, Yuji Hara
  • Patent number: 6268658
    Abstract: A semiconductor device comprises a silicon substrate, an electrical wiring metal, an insulating film formed on the silicon substrate, a plurality of contact holes formed in the insulating film for connecting the silicon substrate and the electrical wiring metal to each other, and a titanium silicide film formed in the contact holes. The thickness of the titanium silicide film is 10 nm to 120 nm or, preferably, 20 nm to 84 nm. Semiconductor regions and the electrical wiring metal are connected to each other through the titanium silicide film.
    Type: Grant
    Filed: February 8, 2000
    Date of Patent: July 31, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Hiromi Todorobaru, Hideo Miura, Masayuki Suzuki, Shinji Nishihara, Shuji Ikeda, Masashi Sahara, Shinichi Ishida, Hiromi Abe, Atushi Ogishima, Hiroyuki Uchiyama, Sonoko Abe
  • Patent number: 6043118
    Abstract: In a semiconductor memory circuit device wherein each memory cell is constituted by a series circuit of a memory cell selecting MISFET and an information storing capacitor of a stacked structure, there are present in a first region as a memory cell array region a first MISFET having a gate electrode and source and drain regions; first and second capacity electrodes and a dielectric film extending onto a first insulating film on the gate electrode; a second insulating film positioned on the second capacity electrode; and a first wiring positioned on the second insulating film, while in a second region as a peripheral circuit region there are present a second MISFET having a gate electrode and source and drain regions; a first insulating film on the gate electrode; a third insulating film on the first insulating film; a second insulating film on the third insulating film; and a second wiring on the second insulating film.
    Type: Grant
    Filed: February 13, 1997
    Date of Patent: March 28, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Naokatsu Suwanai, Hiroyuki Miyazawa, Atushi Ogishima, Masaki Nagao, Kyoichiro Asayama, Hiroyuki Uchiyama, Yoshiyuki Kaneko, Takashi Yoneoka, Kozo Watanabe, Kazuya Endo, Hiroki Soeda
  • Patent number: 6031288
    Abstract: A semiconductor device comprises a silicon substrate, an electrical wiring metal, an insulating film formed on the silicon substrate, a plurality of contact holes formed in the insulating film for connecting the silicon substrate and the electrical wiring metal to each other, and a titanium silicide film formed in the contact holes. The thickness of the titanium silicide film is 10 nm to 120 nm or, preferably, 20 nm to 84 nm. Semiconductor regions and the electrical wiring metal are connected to each other through the titanium silicide film.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: February 29, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Hiromi Todorobaru, Hideo Miura, Masayuki Suzuki, Shinji Nishihara, Shuji Ikeda, Masashi Sahara, Shinichi Ishida, Hiromi Abe, Atushi Ogishima, Hiroyuki Uchiyama, Sonoko Abe
  • Patent number: 5631182
    Abstract: In a semiconductor memory circuit device wherein each memory cell is constituted by a series circuit of a memory cell selecting MISFET and an information storing capacitor of a stacked structure, there are present in a first region as a memory cell array region a first MISFET having a gate electrode and source and drain regions; first and second capacity electrodes and a dielectric film extending onto a first insulating film on the gate electrode; a second insulating film positioned on the second capacity electrode; and a first wiring positioned on the second insulating film, while in a second region as a peripheral circuit region there are present a second MISFET having a gate electrode and source and drain regions; a first insulating film on the gate electrode; a third insulating film on the first insulating film; a second insulating film on the third insulating film; and a second wiring on the second insulating film.
    Type: Grant
    Filed: October 18, 1994
    Date of Patent: May 20, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Naokatsu Suwanai, Hiroyuki Miyazawa, Atushi Ogishima, Masaki Nagao, Kyoichiro Asayama, Hiroyuki Uchiyama, Yoshiyuki Kaneko, Takashi Yoneoka, Kozo Watanabe, Kazuya Endo, Hiroki Soeda
  • Patent number: 5389558
    Abstract: In a semiconductor memory circuit device wherein each memory cell is constituted by a series circuit of a memory cell selecting MISFET and an information storing capacitor of a stacked structure, there are present in a first region as a memory cell array region a first MISFET having a gate electrode and source and drain regions; first and second capacity electrodes and a dielectric film extending onto a first insulating film on the gate electrode; a second insulating film positioned on the second capacity electrode; and a first wiring positioned on the second insulating film, while in a second region as a peripheral circuit region there are present a second MISFET having a gate electrode and source and drain regions; a first insulating film on the gate electrode; a third insulating film on the first insulating film; a second insulating film on the third insulating film; and a second wiring on the second insulating film.
    Type: Grant
    Filed: August 10, 1993
    Date of Patent: February 14, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Naokatsu Suwanai, Hiroyuki Miyazawa, Atushi Ogishima, Masaki Nagao, Kyoichiro Asayama, Hiroyuki Uchiyama, Yoshiyuki Kaneko, Takashi Yoneoka, Kozo Watanabe, Kazuya Endo, Hiroki Soeda
  • Patent number: 5237187
    Abstract: In a semiconductor memory circuit device wherein each memory cell is constituted by a series circuit of a memory cell selecting MISFET and an information storing capacitor of a stacked structure, there are present in a first region, which is a memory cell array region, a first MISFET having a gate electrode and source and drain regions; first and second capacitor electrodes and a dielectric film extended over a first insulating film and over the gate electrode; a second insulating film disposed on the second capacitor electrode; a third insulating film interposed between the first insulating film and first capacitor electrode; and a first wiring positioned on the second insulating film.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: August 17, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Naokatsu Suwanai, Hiroyuki Miyazawa, Atushi Ogishima, Masaki Nagao, Kyoichiro Asayama, Hiroyuki Uchiyama, Yoshiyuki Kaneko, Takashi Yoneoka, Kozo Watanabe, Kazuya Endo, Hiroki Soeda