Patents by Inventor Hu Kang

Hu Kang 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: 8728956
    Abstract: Methods of depositing a film on a substrate surface include surface mediated reactions in which a film is grown over one or more cycles of reactant adsorption and reaction. In one aspect, the method is characterized by the following operations: (a) exposing the substrate surface to a first reactant in vapor phase under conditions allowing the first reactant to adsorb onto the substrate surface; (b) exposing the substrate surface to a second reactant in vapor phase while the first reactant is adsorbed on the substrate surface; and (c) exposing the substrate surface to plasma to drive a reaction between the first and second reactants adsorbed on the substrate surface to form the film.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: May 20, 2014
    Assignee: Novellus Systems, Inc.
    Inventors: Adrien LaVoie, Shankar Swaminathan, Hu Kang, Ramesh Chandrasekharan, Tom Dorsh, Dennis M. Hausmann, Jon Henri, Thomas Jewell, Ming Li, Bryan Schlief, Antonio Xavier, Thomas W. Mountsier, Bart J. van Schravendijk, Easwar Srinivasan, Mandyam Sriram
  • Publication number: 20140120737
    Abstract: Methods and apparatus for depositing continuous thin films using plasma-activated sub-saturated atomic layer deposition are provided herein. According to various embodiments, pin-hole free continuous films may be deposited at thicknesses thinner than achievable with conventional methods. The methods and apparatus also provide high degree of thickness control, with films a per-cycle thickness tunable to as low as 0.1 ? in some embodiments. Further, the methods and apparatus may be used to provide films having improved properties, such as lower wet etch rate, in some embodiments.
    Type: Application
    Filed: October 23, 2013
    Publication date: May 1, 2014
    Applicant: Lam Research Corporation
    Inventors: Shankar Swaminathan, Hu Kang, Adrien Lavoie
  • Publication number: 20140106574
    Abstract: Provided herein are methods and apparatus for filling one or more gaps on a semiconductor substrate. The disclosed embodiments are especially useful for forming seam-free, void-free fill in both narrow and wide features. The methods may be performed without any intervening etching operations to achieve a single step deposition. In various implementations, a first operation is performed using a novel PEALD fill mechanism to fill narrow gaps and line wide gaps. A second operation may be performed using PECVD methods to continue filling the wide gaps.
    Type: Application
    Filed: December 20, 2013
    Publication date: April 17, 2014
    Inventors: Hu Kang, Shankar Swaminathan, Jun Qian, Wanki Kim, Dennis Hausmann, Bart J. van Schravendijk, Adrien LaVoie
  • Publication number: 20130319329
    Abstract: Embodiments related to depositing thin conformal films using plasma-activated conformal film deposition (CFD) processes are described herein. In one example, a method of processing a substrate includes, applying photoresist to the substrate, exposing the photoresist to light via a stepper, patterning the resist with a pattern and transferring the pattern to the substrate, selectively removing photoresist from the substrate, placing the substrate into a process station, and, in the process station, in a first phase, generating radicals off of the substrate and adsorbing the radicals to the substrate to form active species, in a first purge phase, purging the process station, in a second phase, supplying a reactive plasma to the surface, the reactive plasma configured to react with the active species and generate the film, and in a second purge phase, purging the process station.
    Type: Application
    Filed: August 9, 2013
    Publication date: December 5, 2013
    Applicant: Novellus Systems, Inc.
    Inventors: Ming Li, Hu Kang, Mandyam Sriram, Adrien Lavoie
  • Publication number: 20130309415
    Abstract: Systems and methods for processing a substrate include a) arranging a substrate on a pedestal in a processing chamber; b) supplying precursor to the processing chamber; c) purging the processing chamber; d) performing radio frequency (RF) plasma activation; e) purging the processing chamber; and f) prior to purging the processing chamber in at least one of (c) or (e), setting a vacuum pressure of the processing chamber to a first predetermined pressure that is less than a vacuum pressure during at least one of (b) or (d) for a first predetermined period.
    Type: Application
    Filed: May 9, 2013
    Publication date: November 21, 2013
    Applicant: Novellus Systems, Inc.
    Inventors: Shankar Swaminathan, Hu Kang, Adrien LaVoie
  • Patent number: 8524612
    Abstract: Embodiments related to depositing thin conformal films using plasma-activated conformal film deposition (CFD) processes are described herein. In one example, a method of processing a substrate includes, applying photoresist to the substrate, exposing the photoresist to light via a stepper, patterning the resist with a pattern and transferring the pattern to the substrate, selectively removing photoresist from the substrate, placing the substrate into a process station, and, in the process station, in a first phase, generating radicals off of the substrate and adsorbing the radicals to the substrate to form active species, in a first purge phase, purging the process station, in a second phase, supplying a reactive plasma to the surface, the reactive plasma configured to react with the active species and generate the film, and in a second purge phase, purging the process station.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: September 3, 2013
    Assignee: Novellus Systems, Inc.
    Inventors: Ming Li, Hu Kang, Mandyam Sriram, Adrien LaVoie
  • Patent number: 8349222
    Abstract: Unconventional twisted ?-electron system electro-optic (EO) chromophores/compounds, compositions and related device structures. Crystallographic analysis of several non-limiting chromophores reveals, for instance, large ring-ring dihedral twist angles and a highly charge-separated zwitterionic structure in the ground state, in both solution phase and solid-state.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: January 8, 2013
    Assignee: Northwestern University
    Inventors: Tobin J. Marks, Hu Kang
  • Publication number: 20120077349
    Abstract: Embodiments related to depositing thin conformal films using plasma-activated conformal film deposition (CFD) processes are described herein. In one example, a method of processing a substrate includes, applying photoresist to the substrate, exposing the photoresist to light via a stepper, patterning the resist with a pattern and transferring the pattern to the substrate, selectively removing photoresist from the substrate, placing the substrate into a process station, and, in the process station, in a first phase, generating radicals off of the substrate and adsorbing the radicals to the substrate to form active species, in a first purge phase, purging the process station, in a second phase, supplying a reactive plasma to the surface, the reactive plasma configured to react with the active species and generate the film, and in a second purge phase, purging the process station.
    Type: Application
    Filed: January 21, 2011
    Publication date: March 29, 2012
    Inventors: Ming Li, Hu Kang, Mandyam Sriram, Adrien LaVoie
  • Patent number: 8101531
    Abstract: Methods and hardware for depositing thin conformal films using plasma-activated conformal film deposition (CFD) processes are described herein. In one example, a method for forming a thin conformal film comprises, in a first phase, generating precursor radicals off of a surface of the substrate and adsorbing the precursor radicals to the surface to form surface active species; in a first purge phase, purging residual precursor from the process station; in a second phase, supplying a reactive plasma to the surface, the reactive plasma configured to react with the surface active species and generate the thin conformal film; and in a second purge phase, purging residual reactant from the process station.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: January 24, 2012
    Assignee: Novellus Systems, Inc.
    Inventors: Ming Li, Hu Kang, Mandyam Sriram, Adrien LaVoie
  • Publication number: 20110278512
    Abstract: Unconventional twisted ?-electron system electro-optic (EO) chromophores/compounds, compositions and related device structures. Crystallographic analysis of several non-limiting chromophores reveals, for instance, large ring-ring dihedral twist angles and a highly charge-separated zwitterionic structure in the ground state, in both solution phase and solid-state.
    Type: Application
    Filed: June 27, 2011
    Publication date: November 17, 2011
    Applicant: Northwestem University
    Inventors: Tobin J. Marks, Hu Kang
  • Publication number: 20110256726
    Abstract: Methods of depositing a film on a substrate surface include surface mediated reactions in which a film is grown over one or more cycles of reactant adsorption and reaction. In one aspect, the method is characterized by the following operations: (a) exposing the substrate surface to a first reactant in vapor phase under conditions allowing the first reactant to adsorb onto the substrate surface; (b) exposing the substrate surface to a second reactant in vapor phase while the first reactant is adsorbed on the substrate surface; and (c) exposing the substrate surface to plasma to drive a reaction between the first and second reactants adsorbed on the substrate surface to form the film.
    Type: Application
    Filed: April 11, 2011
    Publication date: October 20, 2011
    Inventors: Adrien LaVoie, Shankar Swaminathan, Hu Kang, Ramesh Chandrasekharan, Tom Dorsh, Dennis M. Hausmann, Jon Henri, Thomas Jewell, Ming Li, Bryan Schlief, Antonio Xavier, Thomas W. Mountsier, Bart J. van Schravendijk, Easwar Srinivasan, Mandyam Sriram
  • Patent number: 7968016
    Abstract: Unconventional twisted ?-electron system electro-optic (EO) chromophores/compounds, compositions and related device structures. Crystallographic analysis of several non-limiting chromophores reveals, for instance, large ring-ring dihedral twist angles and a highly charge-separated zwitterionic structure in the ground state, in both solution phase and solid-state.
    Type: Grant
    Filed: June 14, 2010
    Date of Patent: June 28, 2011
    Assignee: Northwestern University
    Inventors: Tobin J. Marks, Hu Kang
  • Patent number: 7824582
    Abstract: Unconventional twisted ?-electron system electro-optic (EO) chromophores/compounds, compositions and related device structures. Crystallographic analysis of several non-limiting chromophores reveals, for instance, large ring-ring dihedral twist angles and a highly charge-separated zwitterionic structure in the ground state, in both solution phase and solid-state.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: November 2, 2010
    Assignee: Northwestern University
    Inventors: Tobin J. Marks, Hu Kang
  • Publication number: 20100273919
    Abstract: Unconventional twisted ?-electron system electro-optic (EO) chromophores/compounds, compositions and related device structures. Crystallographic analysis of several non-limiting chromophores reveals, for instance, large ring-ring dihedral twist angles and a highly charge-separated zwitterionic structure in the ground state, in both solution phase and solid-state.
    Type: Application
    Filed: June 14, 2010
    Publication date: October 28, 2010
    Inventors: Tobin J. Marks, Hu Kang
  • Publication number: 20060237368
    Abstract: Unconventional twisted ?-electron system electro-optic (EO) chromophores/compounds, compositions and related device structures. Crystallographic analysis of several non-limiting chromophores reveals, for instance, large ring-ring dihedral twist angles and a highly charge-separated zwitterionic structure in the ground state, in both solution phase and solid-state.
    Type: Application
    Filed: March 24, 2006
    Publication date: October 26, 2006
    Inventors: Tobin Marks, Hu Kang