Patents by Inventor Hougong Wang

Hougong 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).

  • Patent number: 7884032
    Abstract: A system, method and apparatus is capable of producing layers of various materials stacked on one another on a substrate without exposing the substrate to the pressure and contaminants of ambient air until the stack is complete. In one aspect, the stack of layers can include both an insulative layer of one or more insulative films, and a conductive metal layer of one or more conductive metal layer films. In another aspect, a bias signal of positive and negative voltage pulses may be applied to a target of a deposition chamber to facilitate deposition of the target material in a suitable fashion. In yet another aspect, one or more of the deposition chambers may have associated therewith a pump which combines a turbomolecular pump and a cryogenic pump to generate an ultra high vacuum in that chamber. Other features are described and claimed.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: February 8, 2011
    Assignee: Applied Materials, Inc.
    Inventors: Mengqi Ye, Peijun Ding, Hougong Wang, Zhendong Liu
  • Publication number: 20080116067
    Abstract: The invention relates to physical vapor deposition (PVD) chambers having a rotatable substrate pedestal and at least one moveable tilted target. Embodiments of the invention facilitate deposition of highly uniform thin films.
    Type: Application
    Filed: December 5, 2007
    Publication date: May 22, 2008
    Inventors: Ilya Lavitsky, Michael Rosenstein, Goichi Yoshidome, Hougong Wang, Zhendong Liu, Mengqi Ye
  • Publication number: 20070099438
    Abstract: A system, method and apparatus is capable of producing layers of various materials stacked on one another on a substrate without exposing the substrate to the pressure and contaminants of ambient air until the stack is complete. In one aspect, the stack of layers can include both an insulative layer of one or more insulative films, and a conductive metal layer of one or more conductive metal layer films. In another aspect, a bias signal of positive and negative voltage pulses may be applied to a target of a deposition chamber to facilitate deposition of the target material in a suitable fashion. In yet another aspect, one or more of the deposition chambers may have associated therewith a pump which combines a turbomolecular pump and a cryogenic pump to generate an ultra high vacuum in that chamber. Other features are described and claimed.
    Type: Application
    Filed: October 28, 2005
    Publication date: May 3, 2007
    Inventors: Mengqi Ye, Peijun Ding, Hougong Wang, Zhendong Liu
  • Publication number: 20060096857
    Abstract: The invention relates to physical vapor deposition (PVD) chambers having a rotatable substrate pedestal. Embodiments of the invention facilitate deposition of highly uniform thin films. In further embodiments, one or more sputtering targets are movably disposed above the pedestal. The orientation of the targets relative to the pedestal may be adjusted laterally, vertically or angularly. In one embodiment, the target may be adjusted between angles of about 0 to 45 degreees relative to an axis of pedestal rotation.
    Type: Application
    Filed: November 8, 2004
    Publication date: May 11, 2006
    Inventors: Ilya Lavitsky, Michael Rosenstein, Goichi Yoshidome, Hougong Wang, Zhendong Liu, Mengqi Ye
  • Publication number: 20060096851
    Abstract: The invention relates to physical vapor deposition (PVD) chambers having a rotatable substrate pedestal and at least one moveable tilted target. Embodiments of the invention facilitate deposition of highly uniform thin films.
    Type: Application
    Filed: November 8, 2004
    Publication date: May 11, 2006
    Inventors: Ilya Lavitsky, Michael Rosenstein, Goichi Yoshidome, Hougong Wang, Zhendong Liu, Mengqi Ye
  • Patent number: 7006888
    Abstract: Embodiments of the present invention provide a method, article of manufacture, and apparatus for processing semiconductor wafers. The method includes preheating a semiconductor wafer in two types of chambers. In one embodiment, a first preheating chamber is a load lock and a second preheating chamber is a transition chamber. Semiconductor wafer processing systems which can perform embodiments of the method are presented.
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: February 28, 2006
    Assignee: Applied Materials, Inc.
    Inventors: Hougong Wang, Kenny King-Tai Ngan, Zheng Xu
  • Patent number: 6913680
    Abstract: A method and associated apparatus includes depositing metal on a plating surface of an object immersed in an electrolyte solution prior to bulk deposition on the plating surface. In one aspect, the method further includes applying a voltage between an anode and the plating surface to enhance the concentration of metal ions in the electrolyte solution that is contained in a feature on the plating surface prior to the bulk deposition on the plating surface.
    Type: Grant
    Filed: July 12, 2000
    Date of Patent: July 5, 2005
    Assignee: Applied Materials, Inc.
    Inventors: Bo Zheng, Hougong Wang, Girish Dixit, Fusen Chen
  • Publication number: 20040166697
    Abstract: A positive pressure gradient is maintained across an open access port of an interface chamber such as a load lock chamber which provides an interface between a low pressure chamber such as a transfer or buffer chamber, and a high pressure area such as a staging area or factory interface area. When the access port of the interface chamber is open to the high-pressure area, the positive pressure gradient may be used in some applications to inhibit the flow of gasses from the high-pressure area into the interior of the interface chamber.
    Type: Application
    Filed: December 24, 2003
    Publication date: August 26, 2004
    Inventors: Hougong Wang, Zheng Xu, Kenny King-Tai Ngan
  • Patent number: 6672864
    Abstract: A positive pressure gradient is maintained across an open access port of an interface chamber such as a load lock chamber which provides an interface between a low pressure chamber such as a transfer or buffer chamber, and a high pressure area such as a staging area or factory interface area. When the access port of the interface chamber is open to the high-pressure area, the positive pressure gradient may be used in some applications to inhibit the flow of gasses from the high-pressure area into the interior of the interface chamber.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: January 6, 2004
    Assignee: Applied Materials, Inc.
    Inventors: Hougong Wang, Zheng Xu, Kenny King-Tai Ngan
  • Patent number: 6610189
    Abstract: A method and associated apparatus of electroplating an object and filling small features. The method comprises immersing the plating surface into an electrolyte solution and mechanically enhancing the concentration of metal ions in the electrolyte solution in the features. In one embodiment, the mechanical enhancement comprises mechanically vibrating the plating surface. In another embodiment, the mechanical enhancement comprises mechanically vibrating the electrolyte solution. In a further embodiment, the mechanical enhancement comprises increasing the pressure applied to the electrolyte solution.
    Type: Grant
    Filed: January 3, 2001
    Date of Patent: August 26, 2003
    Assignee: Applied Materials, Inc.
    Inventors: Hougong Wang, Bo Zheng, Girish Dixit, Fusen Chen
  • Publication number: 20030131458
    Abstract: An apparatus and method for processing semiconductor wafers is provided. The apparatus comprises a first buffer chamber having a first robot and a second buffer chamber having a second robot. At least one load lock is coupled to the first buffer chamber and the second buffer chamber where the first and second robots can access at least one of said load locks. A plurality of process chambers are disposed about the first and second buffer chambers.
    Type: Application
    Filed: January 15, 2002
    Publication date: July 17, 2003
    Applicant: Applied Materials, Inc.
    Inventors: Hougong Wang, Gongda Yao, Zheng Xu
  • Publication number: 20030133773
    Abstract: Embodiments of the present invention provide a method, article of manufacture, and apparatus for processing semiconductor wafers. The method includes preheating a semiconductor wafer in two types of chambers. In one embodiment, a first preheating chamber is a load lock and a second preheating chamber is a transition chamber. Semiconductor wafer processing systems which can perform embodiments of the method are presented.
    Type: Application
    Filed: January 14, 2002
    Publication date: July 17, 2003
    Applicant: Applied Materials, Inc.
    Inventors: Hougong Wang, Kenny King-Tai Ngan, Zheng Xu
  • Publication number: 20030044742
    Abstract: A positive pressure gradient is maintained across an open access port of an interface chamber such as a load lock chamber which provides an interface between a low pressure chamber such as a transfer or buffer chamber, and a high pressure area such as a staging area or factory interface area. When the access port of the interface chamber is open to the high-pressure area, the positive pressure gradient may be used in some applications to inhibit the flow of gasses from the high-pressure area into the interior of the interface chamber.
    Type: Application
    Filed: August 27, 2002
    Publication date: March 6, 2003
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Hougong Wang, Zheng Xu, Kenny King-Tai Ngan
  • Publication number: 20030013312
    Abstract: The present invention relates to a method and apparatus for removing particles from substrates undergoing processing in a semiconductor processing system. In the method according to the present invention, semiconductor wafers are placed in a vacuum chamber and gas is injected over the semiconductor wafer to dislodge and remove contaminant particles. The gas is provided by a gas injector affixed to the side of the vacuum chamber opposite the entry point of a wafer. In a preferred embodiment, the gas injector is oriented in the same horizontal plane as the robot arm used to place and remove wafers from the chamber.
    Type: Application
    Filed: July 10, 2001
    Publication date: January 16, 2003
    Inventors: Hougong Wang, Ken Kaung K. Lai, Anzhong Chang, Xiaoxiong Yuan, Be V. Vo
  • Publication number: 20020084189
    Abstract: A method and associated apparatus of electroplating an object and filling small features. The method comprises immersing the plating surface into an electrolyte solution and mechanically enhancing the concentration of metal ions in the electrolyte solution in the features. In one embodiment, the mechanical enhancement comprises mechanically vibrating the plating surface. In another embodiment, the mechanical enhancement comprises mechanically vibrating the electrolyte solution. In a further embodiment, the mechanical enhancement comprises increasing the pressure applied to the electrolyte solution.
    Type: Application
    Filed: January 3, 2001
    Publication date: July 4, 2002
    Applicant: Applied Materials, Inc.
    Inventors: Hougong Wang, Bo Zheng, Girish Dixit, Fusen Chen
  • Patent number: 6303994
    Abstract: A method and apparatus are provided for reducing and eliminating the First Wafer Effect. Specifically, in a method, or system that employs a separate hot chamber for hot deposition of material that may result in the First Wafer Effect (FWE material), a cold layer of the FWE material is deposited within the hot deposition chamber prior to deposition of the hot FWE material layer.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: October 16, 2001
    Assignee: Applied Materials, Inc.
    Inventors: Hougong Wang, Gongda Yao
  • Patent number: 6299689
    Abstract: A method and apparatus for reflowing a material layer is provided. The inventive method introduces into a reflow chamber a material which is at least as reactive or more reactive than a material to be reflowed (i.e., a gettering material). Preferably the gettering material is sputter deposited within the reflow chamber while a shield prevents the gettering material from reaching the material layer to be reflowed. The shield may be coupled to, or integral with a clamp for clamping a wafer (containing the material layer to be reflowed) to a wafer support provided sufficient venting exists so that contaminants degassed from the wafer may flow to the region between the sputtering target and the shield where the contaminants can react with gettering material.
    Type: Grant
    Filed: March 13, 2000
    Date of Patent: October 9, 2001
    Assignee: Applied Materials, Inc.
    Inventors: Hougong Wang, Steve Lai, Gongda Yao, Peijun Ding
  • Patent number: 6139698
    Abstract: A method and apparatus are provided for reducing and eliminating the First Wafer Effect. Specifically, in a method, or system that employs a separate hot chamber for hot deposition of material that may result in the First Wafer Effect (FWE material), a cold layer of the FWE material is deposited within the hot deposition chamber prior to deposition of the hot FWE material layer.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: October 31, 2000
    Assignee: Applied Materials, Inc.
    Inventors: Hougong Wang, Gongda Yao
  • Patent number: 6077404
    Abstract: A method and apparatus for reflowing a material layer is provided. The inventive method introduces into a reflow chamber a material which is at least as reactive or more reactive than a material to be reflowed (i.e., a gettering material). Preferably the gettering material is sputter deposited within the reflow chamber while a shield prevents the gettering material from reaching the material layer to be reflowed. The shield may be coupled to, or integral with a clamp for clamping a wafer (containing the material layer to be reflowed) to a wafer support provided sufficient venting exists so that contaminants degassed from the wafer may flow to the region between the sputtering target and the shield where the contaminants can react with gettering material.
    Type: Grant
    Filed: February 17, 1998
    Date of Patent: June 20, 2000
    Assignee: Applied Material, Inc.
    Inventors: Hougong Wang, Steve Lai, Gongda Yao, Peijun Ding
  • Patent number: 6077402
    Abstract: In a plasma generating apparatus, a coil is positioned between a target and a workpiece to inductively couple RF energy into a plasma so that the paths of a portion of the ionized deposition material are deflected from the center of the workpiece and toward the edges of the workpiece. As a consequence, it has been found that the uniformity of deposition may be improved. In the illustrated embodiment, the coil is a multi-turn coil formed in a generally planar spiral centered in the stream of deposition material.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: June 20, 2000
    Assignee: Applied Materials, Inc.
    Inventors: Liubo Hong, Hougong Wang, Gongda Yao, Zheng Xu