Patents by Inventor Alice Hollister

Alice Hollister 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: 10242848
    Abstract: A carrier ring for use in a chamber implemented for depositing films and chambers that use the carrier ring are provided. The carrier ring has an annular disk shape with an outer edge side and a wafer edge side. The carrier ring has a top carrier ring surface that extends between the outer edge side to the wafer edge side. The wafer edge side includes a lower carrier ring surface that is lower than the top carrier ring surface. The wafer edge side also includes a plurality of contact support structures. Each contact support structure is located at an edge of the lower carrier ring surface and has a height that is between the lower carrier ring surface and the top carrier ring surface, and the contact support structure has tapered edges and corners. A step is defined between the top carrier ring surface and the lower carrier ring surface, such that a top facing edge is disposed at a top of the step and a lower inner edge is disposed at the bottom of the step.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: March 26, 2019
    Assignee: Lam Research Corporation
    Inventors: Eli Jeon, Nick Ray Linebarger, Jr., Sirish Reddy, Alice Hollister, Rungthiwa Methaapanon
  • Patent number: 9520295
    Abstract: Systems and methods for depositing a metal-doped amorphous carbon hardmask film or a metal-doped amorphous silicon hardmask film includes arranging a substrate in a processing chamber; supplying a carrier gas to the processing chamber; supplying a hydrocarbon precursor gas or a silicon precursor gas to the processing chamber, respectively; supplying a metal-based precursor gas to the processing chamber; one of creating or supplying plasma in the processing chamber; and depositing a metal-doped amorphous carbon hardmask film or a metal-doped amorphous silicon hardmask film on the substrate, respectively.
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: December 13, 2016
    Assignee: LAM RESEARCH CORPORATION
    Inventors: Fayaz Shaikh, Sirish Reddy, Alice Hollister
  • Publication number: 20160225632
    Abstract: Systems and methods for depositing a metal-doped amorphous carbon hardmask film or a metal-doped amorphous silicon hardmask film includes arranging a substrate in a processing chamber; supplying a carrier gas to the processing chamber; supplying a hydrocarbon precursor gas or a silicon precursor gas to the processing chamber, respectively; supplying a metal-based precursor gas to the processing chamber; one of creating or supplying plasma in the processing chamber; and depositing a metal-doped amorphous carbon hardmask film or a metal-doped amorphous silicon hardmask film on the substrate, respectively.
    Type: Application
    Filed: February 3, 2015
    Publication date: August 4, 2016
    Inventors: Fayaz Shaikh, Sirish Reddy, Alice Hollister
  • Publication number: 20160172165
    Abstract: A carrier ring for use in a chamber implemented for depositing films and chambers that use the carrier ring are provided. The carrier ring has an annular disk shape with an outer edge side and a wafer edge side. The carrier ring has a top carrier ring surface that extends between the outer edge side to the wafer edge side. The wafer edge side includes a lower carrier ring surface that is lower than the top carrier ring surface. The wafer edge side also includes a plurality of contact support structures. Each contact support structure is located at an edge of the lower carrier ring surface and has a height that is between the lower carrier ring surface and the top carrier ring surface, and the contact support structure has tapered edges and corners. A step is defined between the top carrier ring surface and the lower carrier ring surface, such that a top facing edge is disposed at a top of the step and a lower inner edge is disposed at the bottom of the step.
    Type: Application
    Filed: December 12, 2014
    Publication date: June 16, 2016
    Inventors: Eli Jeon, Nick Ray Linebarger, JR., Sirish Reddy, Alice Hollister, Rungthiwa Methaapanon
  • Patent number: 9337068
    Abstract: A method of forming an oxygen-containing ceramic hard mask film on a semiconductor substrate involves receiving a semiconductor substrate in a plasma-enhanced chemical vapor deposition (PECVD) process chamber and depositing forming by PEVCD on the substrate an oxygen-containing ceramic hard mask film, the film being etch selective to low-k dielectric and copper, resistant to plasma dry-etch and removable by wet-etch. The method may further involve removing the oxygen-containing ceramic hard mask film from the substrate with a wet etch. Corresponding films and apparatus are also provided.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: May 10, 2016
    Assignee: Lam Research Corporation
    Inventors: George Andrew Antonelli, Alice Hollister, Sirish Reddy
  • Patent number: 9117668
    Abstract: Smooth silicon films having low compressive stress and smooth tensile silicon films are deposited by plasma enhanced chemical vapor deposition (PECVD) using a process gas comprising a silicon-containing precursor (e.g., silane), argon, and a second gas, such as helium, hydrogen, or a combination of helium and hydrogen. Doped smooth silicon films and smooth silicon germanium films can be obtained by adding a source of dopant or a germanium-containing precursor to the process gas. In some embodiments dual frequency plasma comprising high frequency (HF) and low frequency (LF) components is used during deposition, resulting in improved film roughness. The films are characterized by roughness (Ra) of less than about 7 ?, such as less than about 5 ? as measured by atomic force microscopy (AFM), and a compressive stress of less than about 500 MPa in absolute value. In some embodiments smooth tensile silicon films are obtained.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: August 25, 2015
    Assignee: Novellus Systems, Inc.
    Inventors: Alice Hollister, Sirish Reddy, Keith Fox, Mandyam Sriram, Joe Womack
  • Publication number: 20140175617
    Abstract: A method of forming an oxygen-containing ceramic hard mask film on a semiconductor substrate involves receiving a semiconductor substrate in a plasma-enhanced chemical vapor deposition (PECVD) process chamber and depositing forming by PEVCD on the substrate an oxygen-containing ceramic hard mask film, the film being etch selective to low-k dielectric and copper, resistant to plasma dry-etch and removable by wet-etch. The method may further involve removing the oxygen-containing ceramic hard mask film from the substrate with a wet etch. Corresponding films and apparatus are also provided.
    Type: Application
    Filed: December 12, 2013
    Publication date: June 26, 2014
    Applicant: Lam Research Corporation
    Inventors: George Andrew Antonelli, Alice Hollister, Sirish Reddy
  • Publication number: 20130316518
    Abstract: Smooth silicon films having low compressive stress and smooth tensile silicon films are deposited by plasma enhanced chemical vapor deposition (PECVD) using a process gas comprising a silicon-containing precursor (e.g., silane), argon, and a second gas, such as helium, hydrogen, or a combination of helium and hydrogen. Doped smooth silicon films and smooth silicon germanium films can be obtained by adding a source of dopant or a germanium-containing precursor to the process gas. In some embodiments dual frequency plasma comprising high frequency (HF) and low frequency (LF) components is used during deposition, resulting in improved film roughness. The films are characterized by roughness (Ra) of less than about 7 ?, such as less than about 5 ? as measured by atomic force microscopy (AFM), and a compressive stress of less than about 500 MPa in absolute value. In some embodiments smooth tensile silicon films are obtained.
    Type: Application
    Filed: May 23, 2012
    Publication date: November 28, 2013
    Inventors: Alice HOLLISTER, Sirish REDDY, Keith FOX, Mandyam SRIRAM, Joe WOMACK
  • Publication number: 20120258261
    Abstract: A method for depositing a film includes arranging a substrate in a plasma enhanced chemical vapor deposition chamber. A first ashable hardmask (AHM) layer that is carbon-based is deposited on the substrate. During the depositing of the first AHM layer, doping is performed with at least one dopant selected from a group consisting of silicon, silane, boron, nitrogen, germanium, carbon, ammonia, and carbon dioxide. An atomic percentage of the at least one dopant is greater than or equal to 5% of the first AHM layer.
    Type: Application
    Filed: April 10, 2012
    Publication date: October 11, 2012
    Applicant: Novellus Systems, Inc.
    Inventors: Sirish Reddy, Alice Hollister, Pramod Subramonium, Jon Henri, Chunhai Ji, Zhi Yuan Fang