Patents by Inventor Arthur Howald

Arthur Howald 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: 20080057221
    Abstract: A cluster architecture and methods for processing a substrate are disclosed. The cluster architecture includes a lab-ambient controlled transfer module that is coupled to one or more wet substrate processing modules. The lab-ambient controlled transfer module and the one or more wet substrate processing modules are configured to manage a first ambient environment. A vacuum transfer module that is coupled to the lab-ambient controlled transfer module and one or more plasma processing modules is also provided. The vacuum transfer module and the one or more plasma processing modules are configured to manage a second ambient environment. And, a controlled ambient transfer module that is coupled to the vacuum transfer module and one or more ambient processing modules is also included. The controlled ambient transfer module and the one or more ambient processing modules are configured to manage a third ambient environment.
    Type: Application
    Filed: December 15, 2006
    Publication date: March 6, 2008
    Applicant: Lam Research Corporation
    Inventors: John Boyd, Yezdi Dordi, Tiruchirapalli Arunagiri, Benjamin Mooring, John Parks, William Thie, Fritz Redeker, Arthur Howald, Alan Schoepp, David Hemker
  • Publication number: 20080057182
    Abstract: A method for filling a trench of a substrate in a controlled environment is provided. The method initiates with etching a trench in the substrate in a first chamber of a cluster tool. A barrier layer configured to prevent electromigration is deposited over an exposed surface of the trench in a second chamber of the cluster tool and the trench is filled with a gap fill material deposited directly onto the barrier layer in the cluster tool. A semiconductor device fabricated by the method is also provided.
    Type: Application
    Filed: December 15, 2006
    Publication date: March 6, 2008
    Inventors: John Boyd, Yezdi Dordi, Tiruchirapalli Arunagiri, Benjamin Mooring, John Parks, William Thie, Fritz Redeker, Arthur Howald, Alan Schoepp, David Hemker
  • Publication number: 20070285869
    Abstract: A method for removing a substrate that is attached to a bipolar electrostatic chuck (ESC) by application of a bipolar ESC voltage is provided which includes discontinuing the bipolar ESC voltage after processing a current substrate, and determining a monopolar component error of the processing. The method also includes correcting the monopolar component error for a subsequent substrate.
    Type: Application
    Filed: March 19, 2007
    Publication date: December 13, 2007
    Applicant: Lam Research Corp.
    Inventor: Arthur Howald
  • Patent number: 7196896
    Abstract: A glass workpiece being processed in a vacuum plasma processing chamber is dechucked from a monopolar electrostatic chuck by gradually reducing the chucking voltage during processing while maintaining the voltage high enough to clamp the workpiece. A reverse polarity voltage applied to the chuck at the end of processing assists in dechucking. The workpiece temperature is maintained at a high value at the end of processing to assisting in dechucking. Peak current flowing through the chuck during lifting of the workpiece from the chuck controls the amplitude and/or duration of the reverse polarity voltage during the next dechucking operation.
    Type: Grant
    Filed: August 30, 2004
    Date of Patent: March 27, 2007
    Assignee: Lam Research Corporation
    Inventors: Arthur Howald, John P. Holland
  • Publication number: 20060219267
    Abstract: A method for cleaning a processing chamber that includes heating an inner surface of the processing chamber to a first temperature. The first temperature can be sufficient to cause a first species to become volatile. The first species can be one of several species deposited on the inner surface. A cleaning chemistry is injected into the processing chamber. The cleaning chemistry can be reactive with a second one of the species to convert the second species to the first species. The volatilized first species can also be output from the processing chamber. A system for cleaning the process chamber is also described.
    Type: Application
    Filed: May 31, 2006
    Publication date: October 5, 2006
    Applicant: LAM RESEARCH CORPORATION
    Inventors: Andrew Bailey, Shrikant Lohokare, Arthur Howald, Yunsang Kim
  • Publication number: 20060137821
    Abstract: An inductively coupled plasma processing apparatus includes a chamber having a top opening. A window seals the top opening of the chamber, and the window has an inner surface that is exposed to an internal region of the chamber. A window protector for protecting the inner surface of the window is disposed within the chamber. The window protector is configured to prevent conductive etch byproducts from being deposited on the inner surface of the window in the form of a continuous loop. In one alternative embodiment, a plurality of window protectors is affixed to the inner surface of the window. In another embodiment, the window has a plurality of T-shaped or dovetail slots formed therein. In yet another embodiment, a plurality of rectangular slots is formed in the window and a window protector having corresponding slots is mounted against the inner surface of the window.
    Type: Application
    Filed: December 28, 2004
    Publication date: June 29, 2006
    Applicant: LAM RESEARCH COPORATION
    Inventors: Arthur Howald, Tuqiang Ni
  • Publication number: 20060128152
    Abstract: A method of etching a conductive layer includes converting at least a portion of the conductive layer and etching the conductive layer to substantially remove the converted portion of the conductive layer and thereby expose a remaining surface. The remaining surface has an average surface roughness of less than about 10 nm. A system for etching a conductive layer is also disclosed.
    Type: Application
    Filed: March 9, 2005
    Publication date: June 15, 2006
    Applicant: LAM RESEARCH CORPORATION
    Inventors: Yunsang Kim, Andrew Bailey, Hyungsuk Yoon, Arthur Howald
  • Publication number: 20060005928
    Abstract: Methods for improving the stability of RF power delivery to a plasma load are disclosed. The method includes adding an RF resistor and/or a power attenuator at one of many specific locations in the RF power system to lower the impedance derivatives while keeping the matching circuit substantially in tune with the RF transmission line.
    Type: Application
    Filed: October 15, 2004
    Publication date: January 12, 2006
    Inventors: Arthur Howald, Andras Kuthi, Andrew Bailey
  • Publication number: 20050225923
    Abstract: A method for removing a substrate that is attached to a bipolar electrostatic chuck (ESC) by application of a bipolar ESC voltage is provided which includes discontinuing the bipolar ESC voltage after processing a current substrate, and determining a monopolar component error of the processing. The method also includes correcting the monopolar component error for a subsequent substrate.
    Type: Application
    Filed: June 30, 2004
    Publication date: October 13, 2005
    Applicant: Lam Research Corp.
    Inventor: Arthur Howald
  • Publication number: 20050128160
    Abstract: An antenna includes excitation terminals responsive to an RF source to supply an RF electromagnetic field to a plasma that processes a workpiece in a vacuum chamber. The coil includes a transformer having a primary winding coupled to the excitation terminals and a multi-turn plasma excitation secondary winding connected in series with a capacitor.
    Type: Application
    Filed: January 28, 2005
    Publication date: June 16, 2005
    Applicant: LAM RESEARCH CORPORATION
    Inventors: Arthur Howald, Andras Kuthi
  • Publication number: 20050093012
    Abstract: A method for cleaning a processing chamber that includes heating an inner surface of the processing chamber to a first temperature. The first temperature can be sufficient to cause a first species to become volatile. The first species can be one of several species deposited on the inner surface. A cleaning chemistry is injected into the processing chamber. The cleaning chemistry can be reactive with a second one of the species to convert the second species to the first species. The volatilized first species can also be output from the processing chamber. A system for cleaning the process chamber is also described.
    Type: Application
    Filed: March 16, 2004
    Publication date: May 5, 2005
    Applicant: LAM RESEARCH CORPORATION
    Inventors: Andrew Bailey, Shrikant Lohokare, Arthur Howald, Yunsang Kim
  • Publication number: 20050036268
    Abstract: A glass workpiece being processed in a vacuum plasma processing chamber is dechucked from a monopolar electrostatic chuck by gradually reducing the chucking voltage during processing while maintaining the voltage high enough to clamp the workpiece. A reverse polarity voltage applied to the chuck at the end of processing assists in dechucking. The workpiece temperature is maintained at a high value at the end of processing to assisting in dechucking. Peak current flowing through the chuck during lifting of the workpiece from the chuck controls the amplitude and/or duration of the reverse polarity voltage during the next dechucking operation.
    Type: Application
    Filed: August 30, 2004
    Publication date: February 17, 2005
    Applicant: Lam Research Corporation
    Inventors: Arthur Howald, John Holland