Patents by Inventor Sadayoshi Horii

Sadayoshi Horii 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: 6825126
    Abstract: It is an object of the present invention to effectively and efficiently inhibit the influence of an eliminated gas from a built-up film deposited in a reaction chamber and reduce an incubation time to improve flatness of a thin film. A manufacturing method of a semiconductor device includes a preprocess step and a film-forming step. In the preprocess step, an RPH (Remote Plasma Hydrogenation) process of supplying a hydrogen radical onto a substrate (202), thereafter, an RPN (Remote Plasma Nitridation) process of supplying a nitrogen radical onto the substrate (203), and thereafter, an RPO (Remote Plasma Oxidation) process of supplying an oxygen radical onto the substrate (204) are performed during a substrate temperature increase for raising a substrate temperature up to a film-forming temperature.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: November 30, 2004
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Masayuki Asai, Sadayoshi Horii, Kanako Kitayama, Masayuki Tsuneda
  • Patent number: 6787481
    Abstract: A method for manufacturing a semiconductor device can efficiently form on a substrate an amorphous thin film containing small amounts of impurities without needs for a rapid annealing treatment and a frequent cleaning process. A method for manufacturing a semiconductor device comprises a film-forming step and a film-modifying step. In the film-forming step, a film formation gas from a film formation raw material supply unit 9 is supplied into a reaction chamber 1 through a shower head 6 to form an amorphous thin film including a hafnium oxide film (HfO2 film) on a substrate 4 which is rotating. In the film-modifying step, a radical generated in a reactant activation unit 11 is supplied through the same shower head 6 as used for supplying the film formation gas, so as to remove a specific element which is an impurity in the film formed in the film-forming step.
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: September 7, 2004
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Masayuki Asai, Hisashi Nomura, Sadayoshi Horii
  • Publication number: 20040043544
    Abstract: It is an object of the present invention to effectively and efficiently inhibit the influence of an eliminated gas from a built-up film deposited in a reaction chamber and reduce an incubation time to improve flatness of a thin film. A manufacturing method of a semiconductor device includes a preprocess step and a film-forming step. In the preprocess step, an RPH (Remote Plasma Hydrogenation) process of supplying a hydrogen radical onto a substrate (202), thereafter, an RPN (Remote Plasma Nitridation) process of supplying a nitrogen radical onto the substrate (203), and thereafter, an RPO (Remote Plasma Oxidation) process of supplying an oxygen radical onto the substrate (204) are performed during a substrate temperature increase for raising a substrate temperature up to a film-forming temperature.
    Type: Application
    Filed: April 25, 2003
    Publication date: March 4, 2004
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Masayuki Asai, Sadayoshi Horii, Kanako Kitayama, Masayuki Tsuneda
  • Publication number: 20040009678
    Abstract: A method for manufacturing a semiconductor device can efficiently form on a substrate an amorphous thin film containing small amounts of impurities without needs for a rapid annealing treatment and a frequent cleaning process. A method for manufacturing a semiconductor device comprises a film-forming step and a film-modifying step. In the film-forming step, a film formation gas from a film formation raw material supply unit 9 is supplied into a reaction chamber 1 through a shower head 6 to form an amorphous thin film including a hafnium oxide film (HfO2 film) on a substrate 4 which is rotating. In the film-modifying step, a radical generated in a reactant activation unit 11 is supplied through the same shower head 6 as used for supplying the film formation gas, so as to remove a specific element which is an impurity in the film formed in the film-forming step.
    Type: Application
    Filed: February 28, 2003
    Publication date: January 15, 2004
    Applicant: Hitachi Kokusai Electric Inc.
    Inventors: Masayuki Asai, Hisashi Nomura, Sadayoshi Horii