Patents by Inventor Ryohei Maeno

Ryohei Maeno 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: 9972500
    Abstract: The present invention is provided to improve quality or manufacturing throughput of a semiconductor device. A method includes supplying a source gas to a substrate in a process chamber; exhausting an inside of the process chamber; supplying a reaction gas to the substrate; and exhausting the inside of the process chamber, wherein the source gas and/or the reaction gas is supplied in temporally separated pulses in the supply of the source gas and/or in the supply of the reaction gas. Then, the source gas and/or the reaction gas is supplied in temporally separated pulses to form a film during a gas supply time determined by a concentration distribution of by-products formed on a surface of the substrate.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: May 15, 2018
    Assignee: Hitachi Kokusai Electric, Inc.
    Inventors: Yukinao Kaga, Arito Ogawa, Atsuro Seino, Atsuhiko Ashitani, Ryohei Maeno, Masanori Sakai
  • Publication number: 20170047227
    Abstract: The present invention is provided to improve quality or manufacturing throughput of a semiconductor device. A method includes supplying a source gas to a substrate in a process chamber; exhausting an inside of the process chamber; supplying a reaction gas to the substrate; and exhausting the inside of the process chamber, wherein the source gas and/or the reaction gas is supplied in temporally separated pulses in the supply of the source gas and/or in the supply of the reaction gas. Then, the source gas and/or the reaction gas is supplied in temporally separated pulses to form a film during a gas supply time determined by a concentration distribution of by-products formed on a surface of the substrate.
    Type: Application
    Filed: October 26, 2016
    Publication date: February 16, 2017
    Inventors: Yukinao KAGA, Arito OGAWA, Atsuro SEINO, Atsuhiko ASHITANI, Ryohei MAENO, Masanori SAKAI
  • Patent number: 9508555
    Abstract: To improve quality or manufacturing throughput of a semiconductor device, a method includes supplying a source gas to a substrate in a process chamber; exhausting an inside of the process chamber; supplying a reaction gas to the substrate; and exhausting the inside of the process chamber, wherein the source gas and/or the reaction gas is supplied in temporally separated pulses in the supply of the source gas and/or in the supply of the reaction gas. Then, the source gas and/or the reaction gas is supplied in temporally separated pulses to form a film during a gas supply time determined by a concentration distribution of by-products formed on a surface of the substrate.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: November 29, 2016
    Assignee: Hitachi Kokusai Electric, Inc.
    Inventors: Yukinao Kaga, Arito Ogawa, Atsuro Seino, Atsuhiko Ashitani, Ryohei Maeno, Masanori Sakai
  • Patent number: 8933514
    Abstract: The orientation polarization (positive and negative) of the Si—N bonds and the Si—O bonds is canceled, thereby enabling to minimize the polarization in a capacitive insulating film. As a result, a silicon oxynitride film with a small voltage secondary coefficient is formed, and is applied as a capacitive insulating film for use in a MIM capacitor. Specifically, the refractive index “n” of the silicon oxynitride film satisfies 1.47?n?1.53, for light with a wavelength of 633 nm.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: January 13, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Kiyohiko Sato, Ryohei Maeno, Tsuyoshi Fujiwara, Akira Otaguro, Yukino Ishii, Kiyomi Katsuyama, Hidenori Sato, Daichi Matsumoto
  • Publication number: 20140295667
    Abstract: To improve quality or manufacturing throughput of a semiconductor device, a method includes supplying a source gas to a substrate in a process chamber; exhausting an inside of the process chamber; supplying a reaction gas to the substrate; and exhausting the inside of the process chamber, wherein the source gas and/or the reaction gas is supplied in temporally separated pulses in the supply of the source gas and/or in the supply of the reaction gas. Then, the source gas and/or the reaction gas is supplied in temporally separated pulses to form a film during a gas supply time determined by a concentration distribution of by-products formed on a surface of the substrate.
    Type: Application
    Filed: March 26, 2014
    Publication date: October 2, 2014
    Applicant: Hitachi Kokusai Electric Inc.
    Inventors: Yukinao Kaga, Arito Ogawa, Atsuro Seino, Atsuhiko Ashitani, Ryohei Maeno, Masanori Sakai
  • Patent number: 6767782
    Abstract: Charge-up damages to a substrate are reduced in a manufacturing process using plasma, and the reliability of a semiconductor device is improved. By forming an insulating film on the back of a substrate before a step of forming a first wiring layer, even if a plasma CVD method, a sputtering method, or a dry-etching method is used in a wiring-forming step executed later, then it is possible to suppress electric charges which are generated on the substrate and which flow to the ground potential through the substrate, and to prevent damages to the substrate due to charge-up.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: July 27, 2004
    Assignees: Renesas Technology Corp., Hitachi Tokyo Electronics Co., Ltd.
    Inventors: Takeshi Saikawa, Ryohei Maeno, Sadayuki Okudaira, Tetsuo Saito, Tsuyoshi Tamaru, Kazutoshi Ohmori
  • Publication number: 20020168827
    Abstract: Charge-up damages to a substrate are reduced in a manufacturing process using plasma, and the reliability of a semiconductor device is improved.
    Type: Application
    Filed: February 26, 2002
    Publication date: November 14, 2002
    Applicant: Hitachi, Ltd.
    Inventors: Takeshi Saikawa, Ryohei Maeno, Sadayuki Okudaira, Tetsuo Saito, Tsuyoshi Tamaru, Kazutoshi Ohmori