Patents by Inventor Frank Greer

Frank Greer 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: 8163094
    Abstract: A process for removing indium oxide from indium bumps in a flip-chip structure to reduce contact resistance, by a multi-step plasma treatment. A first plasma treatment of the indium bumps with an argon, methane and hydrogen plasma reduces indium oxide, and a second plasma treatment with an argon and hydrogen plasma removes residual organics. The multi-step plasma process for removing indium oxide from the indium bumps is more effective in reducing the oxide, and yet does not require the use of halogens, does not change the bump morphology, does not attack the bond pad material or under-bump metallization layers, and creates no new mechanisms for open circuits.
    Type: Grant
    Filed: July 23, 2009
    Date of Patent: April 24, 2012
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: H. Frank Greer, Todd J. Jones, Richard P. Vasquez, Michael E. Hoenk, Matthew R. Dickie, Shouleh Nikzad
  • Publication number: 20110316110
    Abstract: A back-illuminated silicon photodetector has a layer of Al2O3 deposited on a silicon oxide surface that receives electromagnetic radiation to be detected. The Al2O3 layer has an antireflection coating deposited thereon. The Al2O3 layer provides a chemically resistant separation layer between the silicon oxide surface and the antireflection coating. The Al2O3 layer is thin enough that it is optically innocuous. Under deep ultraviolet radiation, the silicon oxide layer and the antireflection coating do not interact chemically. In one embodiment, the silicon photodetector has a delta-doped layer near (within a few nanometers of) the silicon oxide surface. The Al2O3 layer is expected to provide similar protection for doped layers fabricated using other methods, such as MBE, ion implantation and CVD deposition.
    Type: Application
    Filed: June 23, 2011
    Publication date: December 29, 2011
    Applicant: California Institute of Technology
    Inventors: Michael E. Hoenk, Frank Greer, Shouleh Nikzad
  • Publication number: 20110300716
    Abstract: Methods, apparatus, and systems for depositing materials with gaseous precursors are provided. In certain implementations, the methods involve providing a wafer substrate to a chamber of an apparatus. The apparatus includes a showerhead to deliver a gas to the chamber, a volume, and an isolation valve between the volume and the showerhead. A gas is delivered the volume when the isolation valve is closed, pressurizing the volume. The isolation valve is opened to allow the gas to flow to the showerhead when the gas is being delivered to the volume. A material is formed on the wafer substrate using the gas. In some implementations, releasing the pressurized gas from the volume reduces the duration of time to develop a spatially uniform gas flow across the showerhead.
    Type: Application
    Filed: June 3, 2011
    Publication date: December 8, 2011
    Inventors: Kie-Jin PARK, Karl LEESER, Frank GREER, David COHEN
  • Patent number: 8053372
    Abstract: The present invention relates to an enhanced cyclic deposition process suitable for deposition of barrier layers, adhesion layers, seed layers, low dielectric constant (low-k) films, high dielectric constant (high-k) films, and other conductive, semi-conductive, and non-conductive films. The deposition enhancement is derived from ions generated in a plasma. The techniques described reduce the time required for plasma stabilization, thereby reducing deposition time and improving efficiency.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: November 8, 2011
    Assignee: Novellus Systems, Inc.
    Inventors: Frank Greer, Karl Leeser
  • Publication number: 20110169160
    Abstract: A method, apparatus, system, and device provide the ability to form one or more solder bumps on one or more materials. The solder bumps are reflowed. During the reflowing, the solder bumps are monitored in real time. The reflow is controlled in real time, thereby controlling a morphology of each of the solder bumps. Further, the wetting of the solder bumps to a surface of the materials is controlled in real time.
    Type: Application
    Filed: January 13, 2011
    Publication date: July 14, 2011
    Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Frank Greer, Todd J. Jones, Shouleh Nikzad, Thomas J. Cunningham, Edward R. Blazejewski, Matthew R. Dickie, Michael E. Hoenk
  • Publication number: 20110169119
    Abstract: Embodiments of the invention provide for fabricating a filter, for electromagnetic radiation, in at least three ways, including (1) fabricating integrated thin film filters directly on a detector; (2) fabricating a free standing thin film filter that may be used with a detector; and (3) treating an existing filter to improve the filter's properties.
    Type: Application
    Filed: January 13, 2011
    Publication date: July 14, 2011
    Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Frank Greer, Shouleh Nikzad
  • Publication number: 20110140246
    Abstract: Systems and methods for producing high quantum efficiency silicon devices. A silicon MBE has a preparation chamber that provides for cleaning silicon surfaces using an oxygen plasma to remove impurities and a gaseous (dry) NH3+NF3 room temperature oxide removal process that leaves the silicon surface hydrogen terminated. Silicon wafers up to 8 inches in diameter have devices that can be fabricated using the cleaning procedures and MBE processing, including delta doping.
    Type: Application
    Filed: December 10, 2010
    Publication date: June 16, 2011
    Applicant: California Institute of Technology
    Inventors: Michael E. Hoenk, Shouleh Nikzad, Todd J. Jones, Frank Greer, Alexander G. Carver
  • Patent number: 7871678
    Abstract: The present invention relates to an enhanced cyclic deposition process suitable for deposition of barrier layers, adhesion layers, seed layers, low dielectric constant (low-k) films, high dielectric constant (high-k) films, and other conductive, semi-conductive, and non-conductive films. The technique increases the chemical reactivity of a precursor used in the process.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: January 18, 2011
    Assignee: Novellus Systems, Inc.
    Inventors: Frank Greer, Karl Leeser
  • Patent number: 7855147
    Abstract: Copper seed layers are formed on diffusion barrier layers (e.g., on Ta, and TaNx layers) without significant agglomeration of copper, with the use of an engineered barrier layer/seed layer interface. The engineered interface includes an adhesion layer, in which copper atoms are physically trapped and are prevented from migrating and agglomerating. The adhesion layer can include between about 20-80% atomic of copper. The copper atoms of the adhesion layer are exposed during deposition of a copper seed layer and serve as the nucleation sites for the deposited copper. Thin, continuous, and conformal seed layers can be deposited on top of the adhesion layer. The trapping of copper within the adhesion layer is achieved by intermixing diffusion barrier and seed layer materials using PVD and/or ALD.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: December 21, 2010
    Assignee: Novellus Systems, Inc.
    Inventors: Alexander Dulkin, Asit Rairkar, Frank Greer, Anshu A. Pradhan, Robert Rozbicki
  • Publication number: 20080248656
    Abstract: Methods are provided for cleaning metal regions overlying semiconductor substrates. A method for removing material from a metal region comprises heating the metal region, forming a plasma from a gas comprising hydrogen and carbon dioxide, and exposing the metal region to the plasma.
    Type: Application
    Filed: April 4, 2007
    Publication date: October 9, 2008
    Applicant: NOVELLUS SYSTEMS, INC.
    Inventors: David Chen, Haruhiro Harry Goto, Martina Martina, Frank Greer, Shamsuddin Alokozai
  • Publication number: 20060239650
    Abstract: Control of audio/video equipment is provided by an apparatus constructed like a computer, with audio and video subsystems. The audio subsystem includes a programmable analog mixer and several analog and digital multiplexers to route and mix multiple inputs to multiple outputs. Databases are stored in computer mass storage to record preferences for playback of digital versatile discs, compact discs and audio files stored in the mass storage device, such as MP3 files. The playback preferences may include video output format, language, surround sound mode, etc. for DVDs and surround sound effects for CDs and audio files.
    Type: Application
    Filed: June 19, 2006
    Publication date: October 26, 2006
    Applicant: Digital Networks North America, Inc.
    Inventors: Rafael Heredia, Frank Greer, Randolph Young, Sean Priddy, Michael Dean
  • Patent number: 6993722
    Abstract: A user interface system, method and computer program product permits selection of predetermined device application modes in a television set system and checking the activation status of other application modes. If active modes are identified which are incompatible with the selected active mode, then these other active modes are halted. If compatible active modes are identified, then these remain concurrently active, with particularized adaptations being made. The user interface is particularly adapted for use with a set-top box environment using a TV set as a user display.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: January 31, 2006
    Assignee: Cirrus Logic, Inc.
    Inventors: Frank Greer, Sean Priddy, Rafael Heredia
  • Publication number: 20050144237
    Abstract: An instant messaging terminal manages multiple conversation sessions across multiple instant messaging services. The terminal includes a display for conversation session windows, a data entry device, a communications module for wireless network communication, and a control module for coordinating network access and controlling conversation session management. The data entry device includes programmable keys for emoticons and the control module automates the generation of a key sequence for generation of a graphical symbol that is compatible with the service being used by a message recipient.
    Type: Application
    Filed: May 14, 2004
    Publication date: June 30, 2005
    Inventors: Rafael Heredia, Frank Greer, Michael Dean