Patents by Inventor Michael J. Westphal

Michael J. Westphal 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).

  • Low and high voltage CMOS devices and process for fabricating same
    Patent number: 5880502
    Abstract: CMOS devices and process for fabricating low voltage, high voltage, or both low voltage and high voltage CMOS devices are disclosed. According to the process, p-channel stops and source/drain regions of PMOS devices are implanted into a substrate in a single step. Further, gates for both NMOS and PMOS devices are doped with n-type dopant and NMOS gates are self-aligned.
    Type: Grant
    Filed: September 6, 1996
    Date of Patent: March 9, 1999
    Assignee: Micron Display Technology, Inc.
    Inventors: John K. Lee, Behnam Moradi, Michael J. Westphal
  • Technique to improve uniformity of large area field emission displays
    Patent number: 5656886
    Abstract: Cold cathode passive matrix FEDs are fabricated by depositing a resistive layer on a substrate, and coated with a protective layer in which at least one hole is formed. Cathode material is deposited on the protective layer making direct contact with the resistive layer through the hole to form bases for the emitter tips which are subsequently etched from the cathode layer. The protective layer allows overetching of the cathode material to prevent tip-to-tip electrical shorts without attacking the underlying resistive layer.
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: August 12, 1997
    Assignee: Micron Display Technology, Inc.
    Inventors: Michael J. Westphal, Behnam Moradi