Patents by Inventor Nobuyuki Kurashima

Nobuyuki Kurashima 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: 6935928
    Abstract: A chemical mechanical polishing aqueous dispersion comprises a component (A) composed of abrasive grains, a component (B) composed of at least one of quinolinecarboxylic acid and pyridinecarboxylic acid, a component (C) composed of an organic acid other than quinolinecarboxylic acid and pyridinecarboxylic acid and a component (D) composed of an oxidizing agent, wherein a mass ratio (WB/WC) of the content (WB) of the component (B) to the content (WC) of the component (C) is not less than 0.01 and less than 2, and the concentration of an ammonia component composed of ammonia and ammonium ion is not more than 0.005 mol/litter. According to the chemical mechanical polishing aqueous dispersion, various layers to be processed can be polished with high efficiency, and a sufficiently planarized polished surface of high precision can be obtained.
    Type: Grant
    Filed: July 2, 2004
    Date of Patent: August 30, 2005
    Assignees: JSR Corporation, Kabushiki Kaisha Toshiba
    Inventors: Kazuhito Uchikura, Kazuo Nishimoto, Masayuki Hattori, Nobuo Kawahashi, Hiroyuki Yano, Yukiteru Matsui, Gaku Minamihaba, Dai Fukushima, Nobuyuki Kurashima
  • Patent number: 6924227
    Abstract: A method of manufacturing a semiconductor device uses a slurry for chemical polishing during the manufacturing process, the slurry containing polishing particles comprising colloidal particles whose primary particles have a diameter ranging from 5 to 30 nm, wherein the degree of association of the primary particles is 5 or less. This slurry for chemical mechanical polishing makes it possible to minimize erosion and scratching whenever a conductive material film is subjected to CMP treatment.
    Type: Grant
    Filed: August 21, 2001
    Date of Patent: August 2, 2005
    Assignees: Kabushiki Kaisha Toshiba, JSR Corporation
    Inventors: Gaku Minamihaba, Hiroyuki Yano, Nobuyuki Kurashima, Nobuo Kawahashi, Masayuki Hattori, Kazuo Nishimoto
  • Publication number: 20050118819
    Abstract: There is disclosed a post-CMP treating liquid comprising water, and resin particles dispersed in the water and having a functional group at a surface thereof, or comprising water, resin particles dispersed in the water, and an additive having a functional group and incorporated in the water. The post-CMP treating liquid exhibits a polishing rate both of an insulating film and a conductive film of 10 nm/min or less.
    Type: Application
    Filed: January 3, 2005
    Publication date: June 2, 2005
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Gaku Minamihaba, Yukiteru Matsui, Nobuyuki Kurashima, Hiroyuki Yano
  • Publication number: 20050113001
    Abstract: Provided is a semiconductor device fabrication apparatus comprising: a filter which contains a polar crystal, and filters pure water or a liquid containing pure water as a solvent; and a working section which has a pressing mechanism configured to apply a pressure to said filter, and supplies the filtered pure water or the filtered liquid containing pure water as a solvent to a surface of an object to be polished or cleaned, thereby performing a polishing process or cleaning process.
    Type: Application
    Filed: October 8, 2004
    Publication date: May 26, 2005
    Inventors: Nobuyuki Kurashima, Gaku Minamihaba
  • Patent number: 6858539
    Abstract: There is disclosed a post-CMP treating liquid comprising water, and resin particles dispersed in the water and having a functional group at a surface thereof, or comprising water, resin particles dispersed in the water, and an additive having a functional group and incorporated in the water. The post-CMP treating liquid exhibits a polishing rate both of an insulating film and a conductive film of 10 nm/min or less.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: February 22, 2005
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Gaku Minamihaba, Yukiteru Matsui, Nobuyuki Kurashima, Hiroyuki Yano
  • Publication number: 20050037693
    Abstract: A chemical mechanical polishing aqueous dispersion comprises a component (A) composed of abrasive grains, a component (B) composed of at least one of quinolinecarboxylic acid and pyridinecarboxylic acid, a component (C) composed of an organic acid other than quinolinecarboxylic acid and pyridinecarboxylic acid and a component (D) composed of an oxidizing agent, wherein a mass ratio (WB/WC) of the content (WB) of the component (B) to the content (WC) of the component (C) is not less than 0.01 and less than 2, and the concentration of an ammonia component composed of ammonia and ammonium ion is not more than 0.005 mol/litter. According to the chemical mechanical polishing aqueous dispersion, various layers to be processed can be polished with high efficiency, and a sufficiently planarized polished surface of high precision can be obtained.
    Type: Application
    Filed: July 2, 2004
    Publication date: February 17, 2005
    Applicants: JSR Corporation, KABUSHIKI KAISHA TOSHIBA
    Inventors: Kazuhito Uchikura, Kazuo Nishimoto, Masayuki Hattori, Nobuo Kawahashi, Hiroyuki Yano, Yukiteru Matsui, Gaku Minamihaba, Dai Fukushima, Nobuyuki Kurashima
  • Publication number: 20050003666
    Abstract: CMP slurry contains a polishing component to polish a region to be polished, which includes at least one of a sub-region made of insulative material and a sub-region made of conductive material, and a restoring component to restore a scratch caused on the region to be polished. The scratch can thus be restored during the polishing.
    Type: Application
    Filed: August 2, 2004
    Publication date: January 6, 2005
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Nobuyuki Kurashima, Gaku Minamihaba, Hiroyuki Yano
  • Patent number: 6790769
    Abstract: A method of manufacturing a semiconductor device includes forming an insulation film having a recess above a semiconductor substrate, depositing a conductive film on the insulation film and filming conductive film in the recess, and polishing the conductive film by a CMP process using CMP slurry in order to selectively leave the conductive film in the recess, the CMP slurry including a polishing component and a restoring component, thereby reducing a scratch formed on at least one of the insulation film and the conductive film by causing the scratch to be filled.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: September 14, 2004
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Nobuyuki Kurashima, Gaku Minamihaba, Hiroyuki Yano
  • Publication number: 20040119164
    Abstract: There is disclosed a semiconductor device comprising a substrate, a first insulating film which is provided above the substrate and has a relative dielectric constant which is at most a predetermined value, a second insulating film which is provided on a surface of the first insulating film and has a relative dielectric constant greater than the predetermined value, a wire which is provided in a recess for the wire, which is formed passing through the second insulating film and extending into the first insulating film, and a dummy wire provided in a recess for the dummy wire, which is formed passing through the second insulating film and extending into the first insulating film, and is located in a predetermined area spaced from an area where the wire is provided.
    Type: Application
    Filed: August 14, 2003
    Publication date: June 24, 2004
    Inventors: Nobuyuki Kurashima, Gaku Minamihaba, Dai Fukushima, Yoshikuni Tateyama, Hiroyuki Yano
  • Patent number: 6737363
    Abstract: A method of manufacturing a semiconductor device according to an aspect of the present invention comprises forming a low dielectric constant insulating film having a siloxane bond as main skeleton on a semiconductor substrate, causing a surfactant to permeate the low dielectric constant insulating film, and conducting a predetermined step on the low dielectric constant insulating film permeated with the surfactant in a state adapted to be exposed to water.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: May 18, 2004
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hideshi Miyajima, Nobuhide Yamada, Nobuo Hayasaka, Nobuyuki Kurashima
  • Publication number: 20040082180
    Abstract: There is disclosed a post-CMP treating liquid comprising water, and resin particles dispersed in the water and having a functional group at a surface thereof, or comprising water, resin particles dispersed in the water, and an additive having a functional group and incorporated in the water. The post-CMP treating liquid exhibits a polishing rate both of an insulating film and a conductive film of 10 nm/min or less.
    Type: Application
    Filed: December 30, 2002
    Publication date: April 29, 2004
    Inventors: Gaku Minamihaba, Yukiteru Matsui, Nobuyuki Kurashima, Hiroyuki Yano
  • Publication number: 20040002292
    Abstract: There is disclosed a polishing method which comprises positioning a treating substrate held by a substrate holder over a turntable so as to enable the treating substrate to press-contact with a polishing region of a polishing surface of the turntable, the polishing surface having the polishing region where the treating substrate moves relative thereto, and a non-polishing region surrounded by the polishing region, introducing a first liquid and a second liquid into a slurry mixing section disposed at the non-polishing region of the polishing surface, at least one of the first and second liquids containing an abrasive component, and applying a mixed slurry comprising the first and second liquids which have been mixed together in advance in the slurry mixing section to the polishing surface while rotating the turntable to enable the treating substrate to move relative to the polishing region, thereby polishing the treating substrate.
    Type: Application
    Filed: May 6, 2003
    Publication date: January 1, 2004
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Dai Fukushima, Hiroyuki Yano, Nobuyuki Kurashima, Gaku Minamihaba, Yoshikuni Tateyama
  • Publication number: 20030124850
    Abstract: A polishing slurry for CMP of an SiC series compound film, includes colloidal silica having a primary particle diameter ranging from 5 nm to 30 nm, and at least one acid selected from the group consisting of an amino acid having a benzene ring and an organic acid having a heterocycle.
    Type: Application
    Filed: December 23, 2002
    Publication date: July 3, 2003
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Gaku Minamihaba, Hiroyuki Yano, Nobuyuki Kurashima
  • Publication number: 20030100186
    Abstract: CMP slurry contains a polishing component to polish a region to be polished, which includes at least one of a sub-region made of insulative material and a sub-region made of conductive material, and a restoring component to restore a scratch caused on the region to be polished. The scratch can thus be restored during the polishing.
    Type: Application
    Filed: October 15, 2002
    Publication date: May 29, 2003
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Nobuyuki Kurashima, Gaku Minamihaba, Hiroyuki Yano
  • Publication number: 20020061657
    Abstract: A method of manufacturing a semiconductor device according to an aspect of the present invention comprises forming a low dielectric constant insulating film having a siloxane bond as main skeleton on a semiconductor substrate, causing a surfactant to permeate the low dielectric constant insulating film, and conducting a predetermined step on the low dielectric constant insulating film permeated with the surfactant in a state adapted to be exposed to water.
    Type: Application
    Filed: September 25, 2001
    Publication date: May 23, 2002
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Hideshi Miyajima, Nobuhide Yamada, Nobuo Hayasaka, Nobuyuki Kurashima
  • Publication number: 20020023389
    Abstract: A slurry for chemical mechanical polishing, which contains polishing particles comprising colloidal particles whose primary particles have a diameter ranging from 5 to 30 nm, wherein the degree of association of the primary particles is 5 or less. This slurry for chemical mechanical polishing makes it possible to minimize the erosion and scratching on the occasion when a conductive material film is subjected to a CMP treatment.
    Type: Application
    Filed: August 21, 2001
    Publication date: February 28, 2002
    Inventors: Gaku Minamihaba, Hiroyuki Yano, Nobuyuki Kurashima, Nobuo Kawahashi, Masayuki Hattori, Kazuo Nishimoto