Patents by Inventor Satoko Seta

Satoko Seta 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: 8114776
    Abstract: In a method of manufacturing a semiconductor device for planarizing a silicon oxide film with chemical mechanical polishing using a silicon film formed on a semiconductor substrate as a stopper film, a surface modification film for hydrophilizing the surface of the silicon film is formed on an upper layer of the polysilicon film, and slurry for the chemical mechanical polishing contains cerium oxide particles, a surface active agent, and resin particles having a cationic or anionic functional group.
    Type: Grant
    Filed: May 17, 2010
    Date of Patent: February 14, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hajime Eda, Yukiteru Matsui, Atsushi Shigeta, Takatoshi Ono, Satoko Seta
  • Publication number: 20110076833
    Abstract: In a method of manufacturing a semiconductor device for planarizing a silicon oxide film with chemical mechanical polishing using a silicon film formed on a semiconductor substrate as a stopper film, a surface modification film for hydrophilizing the surface of the silicon film is formed on an upper layer of the polysilicon film, and slurry for the chemical mechanical polishing contains cerium oxide particles, a surface active agent, and resin particles having a cationic or anionic functional group.
    Type: Application
    Filed: May 17, 2010
    Publication date: March 31, 2011
    Inventors: Hajime Eda, Yukiteru Matsui, Atsushi Shigeta, Takatoshi Ono, Satoko Seta
  • Publication number: 20110070745
    Abstract: A polishing method includes performing conditioning process of injecting a conditioning agent onto a surface of a non-foam polishing pad arranged on a polishing table at a predetermined pressure, and polishing a surface of a polishing target while supplying a polishing slurry containing oxide particles and a surfactant onto the polishing pad, wherein an average of a residual cerium amount is equal to or smaller than 0.35 at % when a plurality of measurement regions, each 200 ?m? in area including the surface of the polishing pad, in a cross section of the polishing pad are measured after the conditioning process.
    Type: Application
    Filed: May 6, 2010
    Publication date: March 24, 2011
    Inventors: Yukiteru MATSUI, Satoko Seta, Takatoshi Ono, Hajime Eda
  • Publication number: 20100240285
    Abstract: A polishing apparatus includes: a wafer polishing unit including a polishing surface plate, an abrasive supply part supplying an abrasive to a polishing pad placed on the polishing surface plate, and a wafer holding part holding a semiconductor wafer; and a dressing unit including a dresser. The dresser has a pellet-shaped grindstone with abrasive particles fixed to a surface thereof. The pellet-shaped grindstone is divided into a first region along an outer peripheral portion thereof and a second region located inside the first region. A chipping preventing portion for the abrasive particles is provided in the first region.
    Type: Application
    Filed: February 9, 2010
    Publication date: September 23, 2010
    Inventor: Satoko SETA
  • Publication number: 20090258493
    Abstract: A substance to be polished made of a silicon oxide film formed on a semiconductor substrate is chemically and mechanically polished and planarized by bringing the substance to be polished into contact with a polishing pad having a modulus of elasticity within a range of 400 to 600 megapascals and by relatively sliding the substance to be polished and the polishing pad, in a condition that a polishing pressure is within a range of 50 to 200 hectopascals and that a rotation number of the polishing pad is within a range of 10 to 80 rpm, and in a state that a polishing slurry containing cerium oxide particles and an anionic surfactant is supplied to the polishing pad.
    Type: Application
    Filed: March 13, 2009
    Publication date: October 15, 2009
    Inventors: Yukiteru MATSUI, Hajime EDA, Takatoshi ONO, Satoko Seta, Yoshikuni TATEYAMA
  • Patent number: 7435682
    Abstract: Disclosed is a method of manufacturing a semiconductor device comprising forming an insulating film above a substrate, forming a recess in the insulating film, successively forming an underlying layer, an immediate layer and a resist film above the insulating film having the recess formed thereon, the underlying layer being formed by a process comprising forming a first organic film above the insulating film, chemically mechanically polishing the first organic film to expose a surface of the insulating film and to remain the first organic film selectively in the recess, and forming a second organic film above the insulating film and above the first organic film, and subjecting the resist film to patterning exposure.
    Type: Grant
    Filed: May 2, 2005
    Date of Patent: October 14, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yukiteru Matsui, Gaku Minamihaba, Atsushi Shigeta, Hiroyuki Yano, Satoko Seta, Hirokazu Kato
  • Publication number: 20050266355
    Abstract: Disclosed is a method of manufacturing a semiconductor device comprising forming an insulating film above a substrate, forming a recess in the insulating film, successively forming an underlying layer, an immediate layer and a resist film above the insulating film having the recess formed thereon, the underlying layer being formed by a process comprising forming a first organic film above the insulating film, chemically mechanically polishing the first organic film to expose a surface of the insulating film and to remain the first organic film selectively in the recess, and forming a second organic film above the insulating film and above the first organic film, and subjecting the resist film to patterning exposure.
    Type: Application
    Filed: May 2, 2005
    Publication date: December 1, 2005
    Inventors: Yukiteru Matsui, Gaku Minamihaba, Atsushi Shigeta, Hiroyuki Yano, Satoko Seta, Hirokazu Kato
  • Publication number: 20050082002
    Abstract: A method of cleaning a film-forming apparatus to remove at least a part of a silicon-based material deposited on a constituent member of the film-forming apparatus after used to form thin films includes introducing a first-gas including fluorine gas and a second gas including nitrogen monoxide gas into the film-forming apparatus, and heating the constituent member. The constituent member includes quartz or silicon carbide, and the silicon-based material includes silicon nitride.
    Type: Application
    Filed: August 27, 2004
    Publication date: April 21, 2005
    Inventors: Yuusuke Sato, Naoki Tamaoki, Satoko Seta, Regis Zils, Jun Sonobe, Takako Kimura, Kayo Momoda