Patents by Inventor Hiroaki Katagiri

Hiroaki Katagiri 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: 20210348263
    Abstract: [Object] A film is deposited on a substrate with high productivity and more uniform film thickness distribution. [Solving Means] In a deposition apparatus, a substrate holder supports at least one substrate facing a first target, rotates around a first central axis, and is configured such that the substrate is rotatable around a second central axis deviated from the first central axis. A vacuum chamber houses the first target and the substrate holder. A power source supplies discharge power to the first target. A gas supply mechanism supplies a discharge gas to the vacuum chamber.
    Type: Application
    Filed: October 30, 2019
    Publication date: November 11, 2021
    Inventors: Shuji KODAIRA, Teppei TAKAHASHI, Takahiro TOBIISHI, Norifumi YAMAMURA, Hiroaki KATAGIRI, Junya KUBO, Masaaki SUZUKI
  • Publication number: 20210230741
    Abstract: A method of forming a film of this invention includes: rotating, inside a vacuum chamber, a to-be-processed substrate with a center of the to-be-processed substrate, while revolving the to-be-processed substrate on the same plane about a revolution shaft; and feeding a film-forming material from a film-forming source to form a predetermined thin film on a surface of the to-be-processed substrate.
    Type: Application
    Filed: December 11, 2019
    Publication date: July 29, 2021
    Applicant: ULVAC, INC.
    Inventors: Shuji Kodaira, Teppei Takahashi, Takahiro Tobiishi, Norifumi Yamamura, Hiroaki Katagiri, Junya Kubo, Masaaki Suzuki
  • Patent number: 8218122
    Abstract: A wiring film having excellent adhesion and barrier property and a low resistance value is formed. An oxygen gas is introduced into a vacuum chamber in which an object to be film formed is disposed; a sputtering target is sputtered in a vacuum ambience containing oxygen; and a first metallic film is formed on a surface of the object to be film formed. The first sputtering target includes copper as a major component and at least one kind of additive elements selected from an additive element group consisting of Mg, Al, Si, Be, Ca, Sr, Ba, Ra, Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb and Dy. Thereafter, a second metallic film is formed on a surface of the first metallic film by sputtering the sputtering target in a state in which the introduction of the oxygen gas into a vacuum ambience is stopped, and then a wiring film is formed by etching the first and second metallic films.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: July 10, 2012
    Assignee: Ulvac, Inc.
    Inventors: Satoru Takasawa, Masaki Takei, Hirohisa Takahashi, Hiroaki Katagiri, Sadayuki Ukishima, Noriaki Tani, Satoru Ishibashi, Tadashi Masuda
  • Patent number: 8119462
    Abstract: A conductive film having high adhesion and low specific resistance is formed. A target containing copper as a main component is sputtered in vacuum ambience while an oxygen gas introduced, and then, a conductive film containing copper as a main component and additive metals, such as Ti or Zr, is formed. Such a conductive film has high adhesion to a silicon layer and a glass substrate and is hardly peeled off from the substrate. Furthermore, the specific resistance is low and the contact resistance to a transparent conductive film is also low. Thus, no deterioration in the electric characteristics occurs even when the conductive film is used for an electrode film. Accordingly, the conductive film formed by the present invention suited for TFT, and electrode films and barrier films of semiconductor elements, in particular.
    Type: Grant
    Filed: February 3, 2009
    Date of Patent: February 21, 2012
    Assignee: Ulvac, Inc.
    Inventors: Satoru Takasawa, Masaki Takei, Hirohisa Takahashi, Hiroaki Katagiri, Sadayuki Ukishima, Noriaki Tani, Satoru Ishibashi, Tadashi Masuda
  • Patent number: 7999464
    Abstract: A display device which can be driven by a thin-film transistor and has a high brightness is provided. A low-voltage-driven inorganic luminescent layer and a control transistor are formed on a substrate. The voltage which is applied to the inorganic luminescent layer is controlled by the control transistor. The inorganic luminescent layer has such strength against heat and any damage such that the inorganic luminescent layer can be formed by sputtering method. A top-emission type display device and a bottom-emission type display device can be formed on the same substrate and the luminescent light can be emitted from the same position.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: August 16, 2011
    Assignee: Ulvac, Inc.
    Inventors: Takashi Komatsu, Kyuzo Nakamura, Hiroaki Katagiri, Noriaki Tani, Kazuya Saito
  • Publication number: 20090303406
    Abstract: A wiring film having excellent adhesion and barrier property and a low resistance value is formed. An oxygen gas is introduced into a vacuum chamber in which an object to be film formed is disposed; a sputtering target is sputtered in a vacuum ambience containing oxygen; and a first metallic film is formed on a surface of the object to be film formed. The first sputtering target includes copper as a major component and at least one kind of additive elements selected from an additive element group consisting of Mg, Al, Si, Be, Ca, Sr, Ba, Ra, Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb and Dy. Thereafter, a second metallic film is formed on a surface of the first metallic film by sputtering the sputtering target in a state in which the introduction of the oxygen gas into a vacuum ambience is stopped, and then a wiring film is formed by etching the first and second metallic films.
    Type: Application
    Filed: June 1, 2009
    Publication date: December 10, 2009
    Applicant: ULVAC, INC.
    Inventors: Satoru Takasawa, Masaki Takei, Hirohisa Takahashi, Hiroaki Katagiri, Sadayuki Ukishima, Noriaki Tani, Satoru Ishibashi, Tadashi Masuda
  • Publication number: 20090236603
    Abstract: A wiring film having excellent adhesion and a low resistance is formed. A barrier film having copper as a main component and containing oxygen is formed on an object to form a film thereon by introducing an oxygen gas into a vacuum chamber in which the object to form a film thereon and sputtering a pure copper target. Then, after the introduction of the oxygen gas is stopped, a low-resistance film made of pure copper is formed by sputtering the pure copper target. Since the barrier film and the low-resistance film have copper as the main component, they can be patterned at a time. Since the low-resistance film has a resistance lower than that of the barrier film, the resistance of the entire wiring film is reduced. Since the barrier layer has high adhesion to glass and silicon, the entire wiring film has high adhesion.
    Type: Application
    Filed: June 8, 2009
    Publication date: September 24, 2009
    Applicant: ULVAC, INC.
    Inventors: Satoru Takasawa, Masaki Takei, Hirohisa Takahashi, Hiroaki Katagiri, Sadayuki Ukishima, Noriaki Tani, Satoru Ishibashi, Tadashi Masuda
  • Publication number: 20090173945
    Abstract: A conductive film having high adhesion and low specific resistance is formed. A target containing copper as a main component is sputtered in vacuum ambience while an oxygen gas introduced, and then, a conductive film containing copper as a main component and additive metals, such as Ti or Zr, is formed. Such a conductive film has high adhesion to a silicon layer and a glass substrate and is hardly peeled off from the substrate. Furthermore, the specific resistance is low and the contact resistance to a transparent conductive film is also low. Thus, no deterioration in the electric characteristics occurs even when the conductive film is used for an electrode film. Accordingly, the conductive film formed by the present invention suited for TFT, and electrode films and barrier films of semiconductor elements, in particular.
    Type: Application
    Filed: February 3, 2009
    Publication date: July 9, 2009
    Applicants: ULVAC, INC., ULVAC MATERIALS, INC.
    Inventors: Satoru TAKASAWA, Masaki TAKEI, Hirohisa TAKAHASHI, Hiroaki KATAGIRI, Sadayuki UKISHIMA, Noriaki TANI, Satoru ISHIBASHI, Tadashi MASUDA
  • Publication number: 20090058265
    Abstract: A display device which can be driven by a thin-film transistor and has a high brightness is provided. A low-voltage-driven inorganic luminescent layer and a control transistor are formed on a substrate. The voltage which is applied to the inorganic luminescent layer is controlled by the control transistor. The inorganic luminescent layer has such strength against heat and any damage such that the inorganic luminescent layer can be formed by sputtering method. A top-emission type display device and a bottom-emission type display device can be formed on the same substrate and the luminescent light can be emitted from the same position.
    Type: Application
    Filed: October 3, 2008
    Publication date: March 5, 2009
    Applicant: ULVAC, INC.
    Inventors: Takashi KOMATSU, Kyuzo Nakamura, Hiroaki Katagiri, Noriaki Tani, Kazuya Saito
  • Publication number: 20080069724
    Abstract: A target is produced inexpensively by safely incorporating an additive which is inflammable in the atmosphere. A primary alloy in a molten state is formed by adding an additive into a principal material in a low-level oxygen atmosphere, and a secondary alloy is produced by increasing the volume of the primary alloy through adding the principal material to the molten primary alloy in the atmospheric atmosphere. Since the primary alloys in the molten or solid condition are stable, it does not ignite in the atmosphere. Since the volume of the primary alloy is smaller than that of the secondary alloy, a smaller size of a vacuum chamber 11 for the formation of the first atmosphere suffices.
    Type: Application
    Filed: August 29, 2007
    Publication date: March 20, 2008
    Applicants: ULVAC, INC., ULVAC MATERIALS, INC.
    Inventors: Atsushi Ota, Isao Sugiura, Noriaki Tani, Masahiro Matsumoto, Hiroaki Katagiri, Tadashi Masuda, Satorui Ishibashi, Takaharu Ito