Patents by Inventor Dai Fukushima

Dai Fukushima 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: 8152598
    Abstract: A substrate treating method includes rotating a substrate in a circumferential direction and polishing a peripheral portion of the substrate by pressing a polishing member to it using a pressing mechanism having a pressing pad. An angle of at least a part of the pressing pad with respect to an axial direction, in which the pressing mechanism makes the pressing pad press the peripheral portion of the substrate, is changed by an angle displacement mechanism which actively displaces the angle so that the polishing is performed depending on a surface to be polished in the peripheral portion.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: April 10, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Dai Fukushima, Atsushi Shigeta
  • Publication number: 20110250756
    Abstract: A chemical mechanical polishing aqueous dispersion comprises (A) abrasive grains, (B) at least one of quinolinecarboxylic acid and pyridinecarboxylic acid, (C) an organic acid other than quinolinecarboxylic acid and pyridinecarboxylic acid, (D) an oxidizing agent, and (E) a nonionic surfactant having a triple bond, the mass ratio (WB/WC) of the amount (WB) of the component (B) to the amount (WC) of the component (C) being 0.01 or more and less than 2, and the component (E) being shown by the following general formula (1), wherein m and n individually represent integers equal to or larger than one, provided that m+n?50 is satisfied.
    Type: Application
    Filed: June 22, 2011
    Publication date: October 13, 2011
    Applicants: KABUSHIKI KAISHA TOSHIBA, JSR CORPORATION
    Inventors: Kazuhito UCHIKURA, Hirotaka Shida, Yuuichi Hashiguchi, Gaku Minamihaba, Dai Fukushima, Yoshikuni Tateyama, Hiroyuki Yano
  • Publication number: 20110062374
    Abstract: A CMP slurry for metallic film is provided, which includes water, 0.01 to 0.3 wt %, based on a total quantity of the slurry, of polyvinylpyrrolidone having a weight average molecular weight of not less than 20,000, an oxidizing agent, a protective film-forming agent containing a first complexing agent for forming a water-insoluble complex and a second complexing agent for forming a water-soluble complex, and colloidal silica having a primary particle diameter ranging from 5 to 50 nm.
    Type: Application
    Filed: November 12, 2010
    Publication date: March 17, 2011
    Inventors: Gaku Minamihaba, Dai Fukushima, Nobuyuki Kurashima, Susumu Yamamoto, Hiroyuki Yano
  • Publication number: 20110003537
    Abstract: A polishing apparatus according to the present invention includes a substrate holder (32) configured to hold and rotate a substrate (W), a press pad (50) configured to press a polishing tape (41) having a polishing surface against a bevel portion of the substrate held by the substrate holder, and a feeding mechanism (45) configured to cause the polishing tape to travel in its longitudinal direction. The press pad (50) includes a hard member (51) having a pressing surface (51a) for pressing the bevel portion of the substrate through the polishing tape, and at least one elastic member (53) for pressing the hard member against the bevel portion of the substrate through the belt-shaped polishing tool.
    Type: Application
    Filed: July 8, 2008
    Publication date: January 6, 2011
    Inventors: Dai Fukushima, Atsushi Shigeta, Tamami Takahashi, Kenya Ito, Masaya Seki, Hiroaki Kusa
  • Patent number: 7842191
    Abstract: A CMP slurry for metallic film is provided, which includes water, 0.01 to 0.3 wt %, based on a total quantity of the slurry, of polyvinylpyrrolidone having a weight average molecular weight of not less than 20,000, an oxidizing agent, a protective film-forming agent containing a first complexing agent for forming a water-insoluble complex and a second complexing agent for forming a water-soluble complex, and colloidal silica having a primary particle diameter ranging from 5 to 50 nm.
    Type: Grant
    Filed: January 27, 2006
    Date of Patent: November 30, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Gaku Minamihaba, Dai Fukushima, Nobuyuki Kurashima, Susumu Yamamoto, Hiroyuki Yano
  • Patent number: 7833431
    Abstract: An aqueous dispersion for chemical mechanical polishing is provided, which includes water and a resin particle. The resin particles accompany with a projection having a curvature radius ranging from 10 nm to 1.65 ?m on a surface. The maximum length of the resin particles is not more than 5 ?m and is 2.5 to 25 times as large as the curvature radius.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: November 16, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Gaku Minamihaba, Nobuyuki Kurashima, Dai Fukushima, Yukiteru Matsui, Susumu Yamamoto, Hiroyuki Yano
  • Publication number: 20100203806
    Abstract: A semiconductor manufacturing apparatus comprising a platen holding a polishing pad; a polishing head including a pressurizing mechanism which presses a surface of a processing target substrate onto the polishing pad; and a plurality of temperature adjusters being provided in the platen in a radial direction of the platen and being capable of adjusting temperatures thereof independently from one another, wherein, when the surface of the processing target substrate is polished by rotating the platen and the polishing head, the temperatures of the temperature adjusters are changed, so that temperature adjustment can be performed selectively on a region ranging on the surface of the processing target substrate in a radial direction thereof.
    Type: Application
    Filed: February 9, 2010
    Publication date: August 12, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomonori KITAKURA, Dai FUKUSHIMA, Keiji FUJITA
  • Patent number: 7682975
    Abstract: A semiconductor device fabricating method includes forming a thin film at a top surface of a substrate; polishing a back surface of said substrate; and after the polishing of the back surface, polishing said thin film as formed at the top surface of said substrate.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: March 23, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Dai Fukushima, Gaku Minamihaba, Hiroyuki Yano
  • Publication number: 20090184415
    Abstract: A manufacturing method of a semiconductor device comprises: providing a first insulating film whose relative dielectric constant is at most a predetermined value above a substrate; providing a second insulating film whose relative dielectric constant is greater than the predetermined value on a surface of the first insulating film; forming a recess for a wire through the second insulating film and extending into the first insulating film, and also forming a recess for a dummy wire through the second insulating film and extending into the first insulating film spaced from a formed area of the recess for the wire; providing a conductive material inside the recess for the wire and the recess for the dummy wire; and providing a wire inside the recess for the wire and providing a dummy wire inside the recess for the dummy wire by polishing and removing the conductive material.
    Type: Application
    Filed: March 27, 2009
    Publication date: July 23, 2009
    Inventors: Nobuyuki Kurashima, Gaku Minamihaba, Dai Fukushima, Yoshikuni Tateyama, Hiroyuki Yano
  • Publication number: 20090124174
    Abstract: A substrate treating method includes rotating a substrate in a circumferential direction and polishing a peripheral portion of the substrate by pressing a polishing member to it using a pressing mechanism having a pressing pad. An angle of at least a part of the pressing pad with respect to an axial direction, in which the pressing mechanism makes the pressing pad press the peripheral portion of the substrate, is changed by an angle displacement mechanism which actively displaces the angle so that the polishing is performed depending on a surface to be polished in the peripheral portion.
    Type: Application
    Filed: November 6, 2008
    Publication date: May 14, 2009
    Inventors: Dai FUKUSHIMA, Atsushi Shigeta
  • Publication number: 20090124172
    Abstract: A chemical mechanical polishing aqueous dispersion comprises (A) abrasive grains, (B) at least one of quinolinecarboxylic acid and pyridinecarboxylic acid, (C) an organic acid other than quinolinecarboxylic acid and pyridinecarboxylic acid, (D) an oxidizing agent, and (E) a nonionic surfactant having a triple bond, the mass ratio (WB/WC) of the amount (WB) of the component (B) to the amount (WC) of the component (C) being 0.01 or more and less than 2, and the component (E) being shown by the following general formula (1), wherein m and n individually represent integers equal to or larger than one, provided that m+n?50 is satisfied.
    Type: Application
    Filed: March 27, 2007
    Publication date: May 14, 2009
    Applicants: JSR CORPORATION, KABUSHIKI KAISHA TOSHIBA
    Inventors: Kazuhito Uchikura, Hirotaka Shida, Yuuichi Hashiguchi, Gaku Minamihara, Dai Fukushima, Yoshikuni Tateyama, Hiroyuki Yano
  • Patent number: 7521350
    Abstract: A manufacturing method of a semiconductor device comprises: providing a first insulating film whose relative dielectric constant is at most a predetermined value above a substrate; providing a second insulating film whose relative dielectric constant is greater than the predetermined value on a surface of the first insulating film; forming a recess for a wire through the second insulating film and extending into the first insulating film, and also forming a recess for a dummy wire through the second insulating film and extending into the first insulating film spaced from a formed area of the recess for the wire; providing a conductive material inside the recess for the wire and the recess for the dummy wire; and providing a wire inside the recess for the wire and providing a dummy wire inside the recess for the dummy wire by polishing and removing the conductive material.
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: April 21, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Nobuyuki Kurashima, Gaku Minamihaba, Dai Fukushima, Yoshikuni Tateyama, Hiroyuki Yano
  • Patent number: 7494931
    Abstract: A method for fabricating a semiconductor device includes forming a copper film above a surface of a substrate, forming on a polishing pad a material which contains copper, wherein said copper does not derive from said copper film, and after having formed the copper-containing material on said polishing pad, polishing said copper film by use of said polishing pad.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: February 24, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Dai Fukushima, Gaku Minamihaba, Hiroyuki Yano, Nobuyuki Kurashima, Susumu Yamamoto
  • Patent number: 7465668
    Abstract: A method for manufacturing a semiconductor device is provided, which includes depositing a conductive film above an insulating film formed above a semiconductor substrate and having a recess, thereby forming a treating film, polishing the treating film while feeding a first chemical solution containing abrasive particles and a second chemical solution containing an oxidizing agent over a polishing pad, the treating film being contacted with the polishing pad at a first load, and subsequent to the polishing, subjecting a surface of the treating film to a chemical-polishing by continuing the feeding of the first chemical solution over the polishing pad while suspending the feeding of the second chemical solution, the treating film being contacted with the polishing pad at a second load which is smaller than the first load.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: December 16, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Dai Fukushima, Gaku Minamihaba, Hiroyuki Yano
  • Publication number: 20080254719
    Abstract: In a substrate processing method of polishing a periphery of a substrate, in a state where a first polishing surface to which abrasive grains that include particles having a chemical effect on an oxide-silicon-series or nitride-silicon-series film as a main component have been fixed is brought into contact with the periphery of a semiconductor substrate, polishing the periphery of the substrate by sliding the substrate and the first polishing surface. Moreover, in a state where a second polishing surface to which abrasive grains mainly having a mechanical effect have been fixed is brought into contact with the periphery of the substrate, polishing the periphery of the substrate by sliding the substrate and the second polishing surface.
    Type: Application
    Filed: April 10, 2008
    Publication date: October 16, 2008
    Inventors: Atsushi SHIGETA, Dai Fukushima, Hiroyuki Yano
  • Patent number: 7419910
    Abstract: Disclosed is a CMP slurry comprising a Cu oxidizing agent, a complexing agent for forming a Cu organic complex, a surfactant, an inorganic particle, and a resin particle containing polystyrene, having on the surface thereof a functional group of the same kind of polarity as that of the inorganic particle and having an average particle diameter of less than 100 nm, the resin particle being incorporated at a concentration of less than 1% by weight.
    Type: Grant
    Filed: September 2, 2004
    Date of Patent: September 2, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Gaku Minamihaba, Dai Fukushima, Susumu Yamamoto, Hiroyuki Yano
  • Publication number: 20080113590
    Abstract: A polishing method for a semiconductor wafer having a polishing target surface at a periphery portion thereof is disclosed. The method includes pressing a polishing member against the polishing target surface along a circumference of the semiconductor wafer by a plurality of pressing portions while rotating the semiconductor wafer in a circumferential direction, thereby polishing the polishing target surface of the semiconductor wafer.
    Type: Application
    Filed: November 13, 2007
    Publication date: May 15, 2008
    Inventors: Takeo Kubota, Atsushi Shigeta, Dai Fukushima
  • Publication number: 20070293047
    Abstract: A polishing method includes causing a polishing pad arranged on a turn table to rotate together with the turn table, and polishing a surface of a substrate by using the rotating polishing pad while supplying a chemical fluid to a surface of the polishing pad on a fore side of the substrate from an oblique direction with respect to the surface of the polishing pad.
    Type: Application
    Filed: May 23, 2007
    Publication date: December 20, 2007
    Inventors: Dai Fukushima, Gaku Minamihaba, Hiroyuki Yano
  • Publication number: 20070293049
    Abstract: A slurry for CMP of Cu film is provided, which includes water, peroxosulfuric acid or a salt thereof, basic amino acid, a complexing agent which forms a water-insoluble metal complex, a surfactant, and colloidal silica having a primary diameter ranging from 5 to 50 nm. The basic amino acid is included at a content of 0.05 to 0.5 wt %.
    Type: Application
    Filed: June 15, 2007
    Publication date: December 20, 2007
    Inventors: Gaku Minamihaba, Dai Fukushima, Hiroyuki Yano
  • Patent number: 7307023
    Abstract: A method for polishing a Cu film comprises contacting a Cu film formed above a semiconductor substrate with a polishing pad attached to a turntable, and supplying a first chemical liquid which promotes the polishing of the Cu film and a second chemical liquid which contains a surfactant, to the polishing pad while the turntable being rotated, thereby polishing the Cu film, while monitoring at least one of a table current of the turntable and a surface temperature of the polishing pad to detect a change in at least one of the table current of the turntable and the surface temperature of the polishing pad. The supply of the second chemical liquid is controlled in conformity with the change.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: December 11, 2007
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Dai Fukushima, Gaku Minamihaba, Hiroyuki Yano, Susumu Yamamoto