Patents by Inventor Masahiro Ogasawara

Masahiro Ogasawara 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: 8642482
    Abstract: A plasma etching method, for plasma-etching a target substrate including at least a film to be etched, an organic film to become a mask of the to-be-etched film, and a Si-containing film which are stacked in order from bottom, includes the first organic film etching step, the treatment step and the second organic film etching step when the organic film is etched to form a mask pattern of the to-be-etched film. In the first organic film etching step, a portion of the organic film is etched. In the treatment step, the Si-containing film and the organic film are exposed to plasma of a rare gas after the first organic film etching step. In the second organic film etching step, the remaining portion of the organic film is etched after the treatment step.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: February 4, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Masahiro Ogasawara, Sungtae Lee
  • Patent number: 8609549
    Abstract: A plasma etching method is provided to perform a plasma etching on a silicon oxide film or a silicon nitride film formed below an amorphous carbon film by using a pattern of the amorphous carbon film as a final mask in a multilayer mask including a photoresist layer having a predetermined pattern, an organic bottom anti-reflection coating (BARC) film formed below the photoresist layer, an SiON film formed below the BARC film, and the amorphous carbon film formed below the SiON film. An initial mask used at the time when the plasma etching of the silicon oxide film or the silicon nitride film is started is under a state in which the SiON film remains on the amorphous carbon film and a ratio of a film thickness of the amorphous carbon film to a film thickness of the residual SiON film is smaller than or equal to about 14.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: December 17, 2013
    Assignee: Tokyo Electron Limited
    Inventors: Sungtae Lee, Masahiro Ogasawara, Junichi Sasaki, Naohito Yanagida
  • Patent number: 8512510
    Abstract: A plasma processing method is arranged to supply a predetermined process gas into a plasma generation space in which a target substrate is placed, and turn the process gas into plasma. The substrate is subjected to a predetermined plasma process by this plasma. The spatial distribution of density of the plasma and the spatial distribution of density of radicals in the plasma are controlled independently of each other relative to the substrate by a facing portion opposite the substrate to form a predetermined process state over the entire target surface of the substrate.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: August 20, 2013
    Assignee: Tokyo Electron Limited
    Inventors: Akira Koshiishi, Jun Hirose, Masahiro Ogasawara, Taichi Hirano, Hiromitsu Sasaki, Tetsuo Yoshida, Michishige Saito, Hiroyuki Ishihara, Jun Ooyabu, Kohji Numata
  • Publication number: 20130029493
    Abstract: A plasma etching method, for plasma-etching a target substrate including at least a film to be etched, an organic film to become a mask of the to-be-etched film, and a Si-containing film which are stacked in order from bottom, includes the first organic film etching step, the treatment step and the second organic film etching step when the organic film is etched to form a mask pattern of the to-be-etched film. In the first organic film etching step, a portion of the organic film is etched. In the treatment step, the Si-containing film and the organic film are exposed to plasma of a rare gas after the first organic film etching step. In the second organic film etching step, the remaining portion of the organic film is etched after the treatment step.
    Type: Application
    Filed: October 4, 2012
    Publication date: January 31, 2013
    Inventors: Masahiro OGASAWARA, Sungtae Lee
  • Publication number: 20120310038
    Abstract: Disclosed is a sleep induction device which exhibits excellent hypnotic effects using light rather than ultrasonic waves or electrical voltages to induce sleep. When the face of a patient is irradiated with diffused ultra narrow band light having a FWHM of 10 nm or less, the specified wavelength of light has excellent hypnotic effects. The sleep induction device is provided with: an ultra narrow band light irradiation means which generates a blue to green ultra narrow band light having a FWHM of 10 nm or less and a peak wavelength range of 430-550 nm; and a diffusion means for reducing the illumination intensity of the light irradiated from the ultra narrow band light irradiation means onto the skin surface of the face to 1-300 lux, and expanding the emission area to the entire face. The green ultra narrow band light has a sleep-inducing effect, and the blue one has a stronger sleep-inducing effect.
    Type: Application
    Filed: December 13, 2010
    Publication date: December 6, 2012
    Inventor: Masahiro Ogasawara
  • Patent number: 8298960
    Abstract: A plasma etching method, for plasma-etching a target substrate including at least a film to be etched, an organic film to become a mask of the to-be-etched film, and a Si-containing film which are stacked in order from bottom, includes the first organic film etching step, the treatment step and the second organic film etching step when the organic film is etched to form a mask pattern of the to-be-etched film. In the first organic film etching step, a portion of the organic film is etched. In the treatment step, the Si-containing film and the organic film are exposed to plasma of a rare gas after the first organic film etching step. In the second organic film etching step, the remaining portion of the organic film is etched after the treatment step.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: October 30, 2012
    Assignee: Tokyo Electron Limited
    Inventors: Masahiro Ogasawara, Sungtae Lee
  • Publication number: 20120271383
    Abstract: Disclosed is a device that can heal skin wounds and grow hair by irradiating light from light emitting diodes (LED). The device is provided with: an ultra-narrowband light irradiation means which generates ultra-narrowband red light with peak wavelength range 620-660 nm and FWHM 10 nm or less; an ultra-narrowband light irradiation means which generates ultra-narrowband green light with peak wavelength range 500-540 nm and FWHM 10 nm or less; an ultra-narrowband light irradiation means which generates ultra-narrowband blue light with peak wavelength range 440-480 nm and FWHM 10 nm or less; and an ultra-narrowband light irradiation means which generates ultra-narrowband red to near infrared light with peak wavelength range 700-2500 nm and FWHM 10 nm or less. In this way, cell growth factors such as HGF and KGF are acted upon by irradiating the affected area with ultra-narrowband monochromatic light of FWHM 10 nm or less, which has excellent effects in healing skin wounds and growing hair.
    Type: Application
    Filed: December 3, 2010
    Publication date: October 25, 2012
    Inventor: Masahiro Ogasawara
  • Publication number: 20120037316
    Abstract: A method of supplying an etching gas includes: supplying a first etching gas used in an etching process into a processing container; and supplying a second etching gas used in the etching process into the processing container, in which, when the first etching gas and the second etching gas are switched therebetween, only a small amount of a gas, which is needed as an etching gas before the switching and is not needed as an etching gas after the switching, is continuously supplied into the processing container.
    Type: Application
    Filed: August 10, 2011
    Publication date: February 16, 2012
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Masahiro OGASAWARA, Yoshiyuki KATO, Hideki MIZUNO, Yoshinobu HAYAKAWA
  • Publication number: 20110250761
    Abstract: A plasma etching method is provided to perform a plasma etching on a silicon oxide film or a silicon nitride film formed below an amorphous carbon film by using a pattern of the amorphous carbon film as a final mask in a multilayer mask including a photoresist layer having a predetermined pattern, an organic bottom anti-reflection coating (BARC) film formed below the photoresist layer, an SiON film formed below the BARC film, and the amorphous carbon film formed below the SiON film. An initial mask used at the time when the plasma etching of the silicon oxide film or the silicon nitride film is started is under a state in which the SiON film remains on the amorphous carbon film and a ratio of a film thickness of the amorphous carbon film to a film thickness of the residual SiON film is smaller than or equal to about 14.
    Type: Application
    Filed: March 11, 2011
    Publication date: October 13, 2011
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Sungtae LEE, Masahiro Ogasawara, Junichi Sasaki, Naohito Yanagida
  • Publication number: 20110214813
    Abstract: A plasma processing method is arranged to supply a predetermined process gas into a plasma generation space in which a target substrate is placed, and turn the process gas into plasma. The substrate is subjected to a predetermined plasma process by this plasma. The spatial distribution of density of the plasma and the spatial distribution of density of radicals in the plasma are controlled independently of each other relative to the substrate by a facing portion opposite the substrate to form a predetermined process state over the entire target surface of the substrate.
    Type: Application
    Filed: May 16, 2011
    Publication date: September 8, 2011
    Inventors: Akira Koshiishi, Jun Hirose, Masahiro Ogasawara, Taichi Hirano, Hiromitsu Sasaki, Tetsuo Yoshida, Michishige Saito, Hiroyuki Ishihara, Jun Ooyabu, Kohji Numata
  • Publication number: 20100218786
    Abstract: Provided are a storage medium and a cleaning method of a plasma processing apparatus capable of more securely removing a deposit and preventing occurrence of any problems caused by a remaining deposit as compared to the conventional method. A cleaning gas which contains an oxygen gas and a nitrogen gas and has a ratio of “nitrogen gas flow rate/(nitrogen gas flow rate+oxygen gas flow rate)” in a range from about 0.05 to about 0.5 is introduced into a processing chamber when a substrate is not mounted on a mounting table, and, then, the inside of the processing chamber is cleaned by applying a high frequency power between the mounting table and an upper electrode and exciting the cleaning gas into plasma.
    Type: Application
    Filed: February 24, 2010
    Publication date: September 2, 2010
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Masahiro Ogasawara, Kenji Tago, Junichi Sasaki, Mafumi Sato
  • Publication number: 20100163525
    Abstract: Disclosed is a substrate processing method of etching a substrate including a target layer, and a mask layer and an intermediate layer that are stacked on the target layer, to form a pattern on the target layer via the intermediate layer and the mask layer. The intermediate layer is etched under a processing pressure of 100 mTorr (1.33×10 Pa) to 150 mTorr (2.0×10 Pa) by using as a processing gas a mixture gas of CF4, CHF3, and C4F8, and the mask layer is etched by using a COS-containing gas as a processing gas.
    Type: Application
    Filed: December 23, 2009
    Publication date: July 1, 2010
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Sungtae LEE, Masahiro Ogasawara, Masahiro Ito
  • Publication number: 20100152645
    Abstract: Compared to a conventional halogen lamp and optical filter, wavelength range of a light is narrowed, throughput of a desired wavelength range is increased, and irradiation of a light of a different wavelength range is enabled. The present apparatus for facial treatment and hair restoration is a combination of a light source means, which is a light source of a monochromatic light of an ultra narrow bandwidth having a half bandwidth of 10 nm or less emitted from a monochromatic LED light source, a monochromatic laser diode light source, or a laser light source, and a diffusion means. Specifically, in a case where the LED light source is used, the apparatus includes a bandpass filter for focusing the wavelength range of each light emitted from the light source and a diffusion lens for diffusing a light which passed through the filter and has an ultra narrow bandwidth with a half bandwidth of 10 nm or less.
    Type: Application
    Filed: January 4, 2008
    Publication date: June 17, 2010
    Inventor: Masahiro Ogasawara
  • Publication number: 20100043974
    Abstract: A plasma processing method is arranged to supply a predetermined process gas into a plasma generation space in which a target substrate is placed, and turn the process gas into plasma. The substrate is subjected to a predetermined plasma process by this plasma. The spatial distribution of density of the plasma and the spatial distribution of density of radicals in the plasma are controlled independently of each other relative to the substrate by a facing portion opposite the substrate to form a predetermined process state over the entire target surface of the substrate.
    Type: Application
    Filed: October 28, 2009
    Publication date: February 25, 2010
    Inventors: Akira Koshiishi, Jun Hirose, Masahiro Ogasawara, Taichi Hirano, Hiromitsu Sasaki, Tetsuo Yoshida, Michishige Saito, Hiroyuki Ishihara, Jun Ooyabu, Kohji Numata
  • Publication number: 20100003825
    Abstract: A plasma etching method, for plasma-etching a target substrate including at least a film to be etched, an organic film to become a mask of the to-be-etched film, and a Si-containing film which are stacked in order from bottom, includes the first organic film etching step, the treatment step and the second organic film etching step when the organic film is etched to form a mask pattern of the to-be-etched film. In the first organic film etching step, a portion of the organic film is etched. In the treatment step, the Si-containing film and the organic film are exposed to plasma of a rare gas after the first organic film etching step. In the second organic film etching step, the remaining portion of the organic film is etched after the treatment step.
    Type: Application
    Filed: July 2, 2009
    Publication date: January 7, 2010
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Masahiro OGASAWARA, Sungtae Lee
  • Publication number: 20090229759
    Abstract: An annular assembly for plasma processing which can prevent poor attraction of a substrate. The annular assembly is comprised of a focus ring that is mounted on a mounting stage and disposed such as to surround an outer periphery of a substrate subjected to the plasma processing, and an outer annular member that is disposed such as to surround an outer periphery of the focus ring. The outer annular member has an exposed surface that is exposed into a processing space in which plasma is produced, and the exposed surface is covered with yttria.
    Type: Application
    Filed: March 6, 2009
    Publication date: September 17, 2009
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Masahiro OGASAWARA, Akihito Toda, Hiroshi Tsuchiya, Shigeki Doba
  • Patent number: 7506610
    Abstract: A plasma processing apparatus includes a process container configured to have a vacuum atmosphere therein. An upper electrode is disposed to face a target substrate placed within the process container. An electric feeder includes a first cylindrical conductive member continuously connected to the upper electrode in an annular direction. The electric feeder is configured to supply a first RF output from a first RF power supply to the upper electrode.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: March 24, 2009
    Assignee: Tokyo Electron Limited
    Inventors: Akira Koshiishi, Jun Hirose, Masahiro Ogasawara, Taichi Hirano, Hiromitsu Sasaki, Tetsuo Yoshida, Michishige Saito, Hiroyuki Ishihara, Jun Ooyabu, Kohji Numata
  • Patent number: 7494561
    Abstract: A plasma processing apparatus includes a process container configured to have a vacuum atmosphere therein. A first upper electrode is disposed to have a ring shape and to face a target substrate placed within the process container. A second upper electrode is disposed radially inside the first upper electrode and electrically insulated therefrom. A first electric feeder is configured to supply a first RF output from a first RF power supply to the first upper electrode at a first power value. A second electric feeder branches from the first electric feeder and is configured to supply the first RF output from the first RF power supply to the second upper electrode at a second power value smaller than the first power value.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: February 24, 2009
    Assignee: Tokyo Electron Limited
    Inventors: Akira Koshiishi, Jun Hirose, Masahiro Ogasawara, Taichi Hirano, Hiromitsu Sasaki, Tetsuo Yoshida, Michishige Saito, Hiroyuki Ishihara, Jun Ooyabu, Kohji Numata
  • Publication number: 20080156441
    Abstract: In a plasma apparatus 1 for performing plasma processing on a substrate W to be processed, an upper electrode 21, which faces opposite a susceptor 5 which is a lower electrode, has an electrode supporting body 22 and an electrode plate 23. In the center on the side of the electrode supporting body at the boundary between the two, a hollow 62, the dimensions of which are determined such that a resonance is generated at a frequency of supplied high-frequency electric power and an electric field orthogonal to the electrode plate 23 is generated inside, is provided. Furthermore, a shield ring which surrounds the electrode plate 23 has a shape in which the lower surface is in the same level as the electrode plate 23, and it is made of a material that is not easily eroded by the plasma. By this, processing small features becomes possible with uniform distribution of plasma and in less degradation due to change over time.
    Type: Application
    Filed: February 29, 2008
    Publication date: July 3, 2008
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Masahiro Ogasawara, Kazuya Kato, Toshifumi Nagaiwa, Kosuke Imafuku, Koichi Kazama
  • Patent number: 7351665
    Abstract: In a first step and a thirst step, etching gases are used which contain fluorocarbon gases having C/F atom number ratios higher than that in a second step. A hole is formed to a midpoint in a silicon oxide film in the first step, the hole is formed until a base SiN film begins to be exposed or immediately before it is exposed in the second step, and overetching is performed in the third step. This enables even a hole having a fine diameter and a high aspect ratio to be formed in an excellent shape.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: April 1, 2008
    Assignee: Tokyo Electron Limited
    Inventor: Masahiro Ogasawara