Patents by Inventor Frank R. Jeffrey, III

Frank R. Jeffrey, III 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).

  • Flexible panel display having thin film transistors driving polymer light-emitting diodes
    Patent number: 5821688
    Abstract: A non-planar electronic light-emitting display has a display area divided into a matrix of pixels. Each pixel includes two primary elements, an electronic driver and a light-emitting diode based on a light-emitting polymer. The electronic driver is a thin film transistor device of amorphous silicon formed on the insulating substrate. The diode has a first electrode connected to and driven by the electronic transistor, a layer of light-emitting polymer deposited on the electrode, and an overlying electrode normally biased on. Energization of the driver biases the diode to cause the polymer to emit light. Each pixel is configured with the two-component structure described above, and row and column lines to the matrix of pixels are decoded by the drivers to cause selective illumination of the pixels.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: October 13, 1998
    Assignee: Iowa State University Research Foundation
    Inventors: Howard R. Shanks, Stanley G. Burns, Frank R. Jeffrey, III
  • Flexible panel display having thin film transistors driving polymer light-emitting diodes
    Patent number: 5747928
    Abstract: A non-planar electronic light-emitting display has a display area divided into a matrix of pixels. Each pixel includes two primary elements, an electronic driver and a light-emitting diode based on a light-emitting polymer. The electronic driver is a thin film transistor device of amorphous silicon formed on the insulating substrate. The diode has a first electrode connected to and driven by the electronic transistor, a layer of light-emitting polymer deposited on the electrode, and an overlying electrode normally biased on. Energization of the driver biases the diode to cause the polymer to emit light. Each pixel is configured with the two-component structure described above, and row and column lines to the matrix of pixels are decoded by the drivers to cause selective illumination of the pixels.
    Type: Grant
    Filed: October 7, 1994
    Date of Patent: May 5, 1998
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Howard R. Shanks, Stanley G. Burns, Frank R. Jeffrey, III
  • Layered photoconductive element
    Patent number: 4513073
    Abstract: The present invention relates to a photoconductive element comprising a photoconductive layer and one or more blocking layers adjacent thereto and having space charge layers interposed between the photoconductive layer and the blocking layers to increase the voltage acceptance potential of the photoconductive element.
    Type: Grant
    Filed: August 18, 1983
    Date of Patent: April 23, 1985
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Frank R. Jeffrey, III, James R. Shirck