Patents by Inventor Yufei Chen

Yufei Chen 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: 20060172664
    Abstract: Method and apparatus are provided for polishing substrates comprising conductive and low k dielectric materials with reduced or minimum substrate surface damage and delamination. In one aspect, a method is provided for processing a substrate including positioning a substrate having a conductive material form thereon in a polishing apparatus having a rotational carrier head and a rotatable platen, wherein the substrate is disposed in the rotational carrier head and the platen has a polishing article disposed thereon, rotating the first carrier head at a first carrier head rotational rate and rotating a platen at a first platen rotational rate, contacting the substrate and the polishing article, accelerating the first carrier head rotational rate to a second carrier head rotational rate and accelerating the first platen rotational rate to a second platen rotational rate, and polishing the substrate at the second carrier head rotational rate and at the second platen rotational rate.
    Type: Application
    Filed: March 30, 2006
    Publication date: August 3, 2006
    Inventors: Yufei Chen, Lizhong Sun, Doohan Lee, Wei-Yung Hsu
  • Patent number: 7037174
    Abstract: Method and apparatus are provided for polishing substrates comprising conductive and low k dielectric materials with reduced or minimum substrate surface damage and delamination. In one aspect, a method is provided for processing a substrate including positioning a substrate having a conductive material form thereon in a polishing apparatus having a rotational carrier head and a rotatable platen, wherein the substrate is disposed in the rotational carrier head and the platen has a polishing article disposed thereon, rotating the first carrier head at a first carrier head rotational rate and rotating a platen at a first platen rotational rate, contacting the substrate and the polishing article, accelerating the first carrier head rotational rate to a second carrier head rotational rate and accelerating the first platen rotational rate to a second platen rotational rate, and polishing the substrate at the second carrier head rotational rate and at the second platen rotational rate.
    Type: Grant
    Filed: October 3, 2003
    Date of Patent: May 2, 2006
    Assignee: Applied Materials, Inc.
    Inventors: Yufei Chen, Lizhong Sun, Doohan Lee, Wei-Yung Hsu
  • Publication number: 20040116052
    Abstract: Method and apparatus are provided for polishing substrates comprising conductive and low k dielectric materials with reduced or minimum substrate surface damage and delamination. In one aspect, a method is provided for processing a substrate including positioning a substrate having a conductive material form thereon in a polishing apparatus having a rotational carrier head and a rotatable platen, wherein the substrate is disposed in the rotational carrier head and the platen has a polishing article disposed thereon, rotating the first carrier head at a first carrier head rotational rate and rotating a platen at a first platen rotational rate, contacting the substrate and the polishing article, accelerating the first carrier head rotational rate to a second carrier head rotational rate and accelerating the first platen rotational rate to a second platen rotational rate, and polishing the substrate at the second carrier head rotational rate and at the second platen rotational rate.
    Type: Application
    Filed: October 3, 2003
    Publication date: June 17, 2004
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Yufei Chen, Lizhong Sun, Doohan Lee, Wei-Yung Hsu
  • Patent number: 6558471
    Abstract: Methods and apparatuses are provided that remove a scrubber brush from contact with a wafer surface prior to slowing down the scrubber brush's rotational rate. The scrubbing method may include rotating a scrubber brush at a non-reduced rate, while the scrubber brush is in contact with the wafer and removing the scrubber brush from contact with the wafer while rotating the scrubber brush at the non-reduced rate. The scrubbing apparatus has a controller programmed to perform the scrubbing method.
    Type: Grant
    Filed: January 26, 2001
    Date of Patent: May 6, 2003
    Assignee: Applied Materials, Inc.
    Inventors: Brian J. Brown, Yufei Chen, David G. Andeen, Madhavi Chandrachood
  • Publication number: 20020189643
    Abstract: A method and an apparatus that uses a surfactant to clean a hydrophobic wafer is provided. In a first aspect, the method may clean and dry a wafer without applying pure DI water to the wafer. In a second aspect, the method may clean a wafer by applying pure DI water to the wafer only for a short duration of time such that the DI water application ceases prior to or as soon as a surfactant solution is rinsed from the wafer thereafter the wafer is dried. In a further aspect a hydrophobic wafer is maintained wetted with surfactant as it is transferred between cleaning apparatuses and is rinsed via diluted surfactant or via a brief DI water spray and is thereafter dried.
    Type: Application
    Filed: August 21, 2002
    Publication date: December 19, 2002
    Inventors: Yufei Chen, Brian J. Brown, Boris Fishkin, Fred C. Redeker
  • Publication number: 20020121290
    Abstract: A hydrophobic wafer is cleaned, rinsed with a low concentration surfactant (e.g., a solution containing approximately 1 to 400 parts per million of surfactant) and then dried (e.g., a via spin drier or an IPA drier). The cleaning rinsing and drying steps may be performed in one or more apparatuses.
    Type: Application
    Filed: April 16, 2002
    Publication date: September 5, 2002
    Applicant: Applied Materials, Inc.
    Inventors: Jianshe Tang, Yufei Chen, Brian J. Brown, Wei-Yung Hsu
  • Publication number: 20010035197
    Abstract: Methods and apparatuses are provided that remove a scrubber brush from contact with a wafer surface prior to slowing down the scrubber brush's rotational rate. The scrubbing method may comprise rotating a scrubber brush at a non-reduced rate, while the scrubber brush is in contact with the wafer and removing the scrubber brush from contact with the wafer while rotating the scrubber brush at the non-reduced rate. The scrubbing apparatus has a controller programmed to perform the scrubbing method.
    Type: Application
    Filed: January 26, 2001
    Publication date: November 1, 2001
    Applicant: Applied Materials, Inc.
    Inventors: Brian J. Brown, Yufei Chen, David G. Andeen, Madhavi Chandrachood