Patents by Inventor Shumin Wang

Shumin Wang 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).

  • Publication number: 20030153184
    Abstract: The invention provides a system for polishing one or more layers of a multi-layer substrate that includes a first metal layer and a second layer comprising (i) a liquid carrier, (ii) at least one oxidizing agent, (iii) at least one polishing additive that increases the rate at which the system polishes at least one layer of the substrate, (iv) at least one stopping compound with a polishing selectivity of the first metal layer:second layer of at least about 30:1, wherein the stopping compound is a cationically charged nitrogen containing compound selected from compounds comprising amines, imines, amides, imides, and mixtures thereof, and (v) a polishing pad and/or an abrasive. The invention also provides a method of polishing a substrate comprising contacting a surface of a substrate with the system and polishing at least a portion of the substrate therewith.
    Type: Application
    Filed: January 29, 2003
    Publication date: August 14, 2003
    Applicant: Cabot Microelectronics Corporation
    Inventors: Shumin Wang, Vlasta Brusic Kaufman, Steven K. Grumbine, Isaac K. Cherian
  • Patent number: 6592776
    Abstract: Chemical mechanical polishing compositions and slurries comprising a film forming agent and at least one silane compound wherein the compositions are useful for polishing substrate features such as copper, tantalum, and tantalum nitride features.
    Type: Grant
    Filed: July 5, 2000
    Date of Patent: July 15, 2003
    Assignee: Cabot Microelectronics Corporation
    Inventors: Shumin Wang, Steven K. Grumbine, Christopher C. Streinz, Eric W. G. Hoglund
  • Patent number: 6582623
    Abstract: A polishing composition comprising a dispersion of silane modified abrasive particles formed by combining at least one metal oxide abrasive having at least one surface metal hydroxide with at least one silane compound and methods for polishing substrate features such as metal features and oxide features using the polishing compositions.
    Type: Grant
    Filed: July 5, 2000
    Date of Patent: June 24, 2003
    Assignee: Cabot Microelectronics Corporation
    Inventors: Steven K. Grumbine, Christopher C. Streinz, Shumin Wang
  • Patent number: 6569350
    Abstract: A chemical mechanical polishing slurry comprising a film forming agent, urea hydrogen peroxide, a complexing agent, an abrasive, and an optional surfactant, as well as a method for using the chemical mechanical polishing slurry to remove copper alloy, titanium, and titanium nitride containing layers from a substrate.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: May 27, 2003
    Assignee: Cabot Microelectronics Corporation
    Inventors: Vlasta Brusic Kaufman, Rodney C. Kistler, Shumin Wang
  • Patent number: 6541434
    Abstract: A composition and method are provided for cleaning contaminants from the surface of a semiconductor wafer after the wafer has been chemically-mechanically polished. The cleaning composition comprises a carboxylic acid, an amine-containing compound, a phosphonic acid, and water. The cleaning composition is useful in removing abrasive remnants as well as metal contaminants from the surface of a semiconductor wafer following chemical-mechanical polishing.
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: April 1, 2003
    Assignee: Cabot Microelectronics Corporation
    Inventor: Shumin Wang
  • Publication number: 20030027499
    Abstract: A method for polishing computer rigid disks comprising bringing at least one surface of the rigid disk into contact with a polishing pad and applying a composition to the rigid disk comprising at least one hydroxylamine additive and colloidal silica to give a polished rigid disk.
    Type: Application
    Filed: February 5, 2002
    Publication date: February 6, 2003
    Applicant: Cabot Microelectronics Corporation
    Inventors: Mingming Fang, Christopher C. Streinz, Shumin Wang
  • Publication number: 20020169088
    Abstract: A composition and method are provided for cleaning contaminants from the surface of a semiconductor wafer after the wafer has been chemically-mechanically polished. The cleaning composition comprises a carboxylic acid, an amine-containing compound, a phosphonic acid, and water. The cleaning composition is useful in removing abrasive remnants as well as metal contaminants from the surface of a semiconductor wafer following chemical-mechanical polishing.
    Type: Application
    Filed: May 23, 2002
    Publication date: November 14, 2002
    Inventor: Shumin Wang
  • Publication number: 20020168923
    Abstract: A chemical mechanical polishing slurry comprising an oxidizing agent, a complexing agent, an abrasive, and an optional surfactant, as well as a method for using the chemical mechanical polishing slurry to remove copper alloy, titanium, titanium nitride, tantalum and tantalum nitride containing layers from a substrate. The slurry does not include a separate film-forming agent.
    Type: Application
    Filed: May 14, 2002
    Publication date: November 14, 2002
    Applicant: Cabot Microelectronics Corp.
    Inventors: Vlasta Brusic Kaufman, Rodney C. Kistler, Shumin Wang
  • Patent number: 6471884
    Abstract: A method of planarizing or polishing the surface of a memory or rigid disk comprising abrading at least a portion of the surface with (i) a polishing composition comprising an oxidizing agent selected from the group consisting of persulfates and peroxides, an amino acid, and water, and (ii) an abrasive.
    Type: Grant
    Filed: April 4, 2000
    Date of Patent: October 29, 2002
    Assignee: Cabot Microelectronics Corporation
    Inventors: Mingming Fang, Shumin Wang
  • Patent number: 6468137
    Abstract: A method for planarizing or polishing a substrate, particularly a memory or rigid disk, is provided. The method comprises abrading at least a portion of a surface of a substrate with a polishing system comprising (i) a polishing composition comprising a liquid carrier, at least one oxidized halide, and at least one amino acid, and (ii) a polishing pad and/or an abrasive.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: October 22, 2002
    Assignee: Cabot Microelectronics Corporation
    Inventors: Mingming Fang, Shumin Wang
  • Publication number: 20020145127
    Abstract: A chemical mechanical polishing slurry comprising a film forming agent, urea hydrogen peroxide, a complexing agent, an abrasive, and an optional surfactant, as well as a method for using the chemical mechanical polishing slurry to remove copper alloy, titanium, and titanium nitride containing layers from a substrate.
    Type: Application
    Filed: March 15, 2002
    Publication date: October 10, 2002
    Applicant: Cabot Microelectronics Corp.
    Inventors: Vlasta Brusic Kaufman, Rodney C. Kistler, Shumin Wang
  • Patent number: 6447371
    Abstract: The present invention is a first CMP slurry including an abrasive, an oxidizing agent, a complexing agent, a film forming agent and an organic amino compound, a second polishing slurry including an abrasive, an oxidizing agent, and acetic acid wherein the weight ratio of the oxidizing agent to acetic acid is at least 10 and a method for using the first and second polishing slurries sequentially to polish a substrate containing copper and containing tantalum or tantalum nitride or both tantalum and tantalum nitride.
    Type: Grant
    Filed: March 6, 2001
    Date of Patent: September 10, 2002
    Assignee: Cabot Microelectronics Corporation
    Inventors: Vlasta Brusic Kaufman, Rodney C. Kistler, Shumin Wang
  • Patent number: 6435947
    Abstract: A polishing pad comprising a polishing pad substrate and at least one solid catalyst, the polishing pad being useful to remove metal layers from a substrate.
    Type: Grant
    Filed: January 22, 2001
    Date of Patent: August 20, 2002
    Assignee: Cabot Microelectronics Corporation
    Inventors: Brian L. Mueller, Shumin Wang
  • Patent number: 6432828
    Abstract: A chemical mechanical polishing slurry comprising an oxidizing agent, a complexing agent, an abrasive, and an optional surfactant, as well as a method for using the chemical mechanical polishing slurry to remove copper alloy, titanium, titanium nitride, tantalum and tantalum nitride containing layers from a substrate. The slurry does not include a separate film-forming agent.
    Type: Grant
    Filed: March 18, 1998
    Date of Patent: August 13, 2002
    Assignee: Cabot Microelectronics Corporation
    Inventors: Vlasta Brusic Kaufman, Rodney C. Kistler, Shumin Wang
  • Patent number: 6395693
    Abstract: A composition and method are provided for cleaning contaminants from the surface of a semiconductor wafer after the wafer has been chemically-mechanically polished. The cleaning composition comprises a carboxylic acid, an amine-containing compound, a phosphonic acid, and water. The cleaning composition is useful in removing abrasive remnants as well as metal contaminants from the surface of a semiconductor wafer following chemical-mechanical polishing.
    Type: Grant
    Filed: September 27, 1999
    Date of Patent: May 28, 2002
    Assignee: Cabot Microelectronics Corporation
    Inventor: Shumin Wang
  • Patent number: 6362106
    Abstract: A chemical mechanical polishing slurry comprising a film forming agent, urea hydrogen peroxide, a complexing agent, an abrasive, and an optional surfactant, as well as a method for using the chemical mechanical polishing slurry to remove copper alloy, titanium, and titanium nitride containing layers from a substrate.
    Type: Grant
    Filed: September 13, 2000
    Date of Patent: March 26, 2002
    Assignee: Cabot Microelectronics Corporation
    Inventors: Vlasta Brusic Kaufman, Rodney C. Kistler, Shumin Wang
  • Patent number: 6362104
    Abstract: A chemical mechanical polishing composition comprising an oxidizing agent and at least one solid catalyst, the composition being useful when combined with an abrasive or with an abrasive pad to remove multiple metal layers from a substrate.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: March 26, 2002
    Assignee: Cabot Microelectronics Corporation
    Inventors: Shumin Wang, Brian L. Mueller
  • Patent number: 6347978
    Abstract: A method for polishing computer rigid disks comprising bringing at least one surface of the rigid disk into contact with a polishing pad and applying a composition to the rigid disk comprising at least one hydroxylamine additive and colloidal silica to give a polished rigid disk.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: February 19, 2002
    Assignee: Cabot Microelectronics Corporation
    Inventors: Mingming Fang, Christopher C. Streinz, Shumin Wang
  • Publication number: 20010049910
    Abstract: A chemical mechanical polishing slurry comprising an oxidizing agent, a complexing agent, an abrasive, and an optional surfactant, as well as a method for using the chemical mechanical polishing slurry to remove copper alloy, titanium, titanium nitride, tantalum and tantalum nitride containing layers from a substrate. The slurry does not include a separate film-forming agent.
    Type: Application
    Filed: March 18, 1998
    Publication date: December 13, 2001
    Inventors: VLASTA BRUSIC KAUFMAN, RODNEY C. KISTLER, SHUMIN WANG
  • Publication number: 20010041507
    Abstract: The present invention is a first CMP slurry including an abrasive, an oxidizing agent, a complexing agent, a film forming agent and an organic amino compound, a second polishing slurry including an abrasive, an oxidizing agent, and acetic acid wherein the weight ratio of the oxidizing agent to acetic acid is at least 10 and a method for using the first and second polishing slurries sequentially to polish a substrate containing copper and containing tantalum or tantalum nitride or both tantalum and tantalum nitride.
    Type: Application
    Filed: March 6, 2001
    Publication date: November 15, 2001
    Inventors: Vlasta Brusic Kaufman, Rodney C. Kistler, Shumin Wang