Patents by Inventor Jürgen Wenning

Jürgen Wenning 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).

  • DSTN display with electromagnetic shielding
    Patent number: 7180558
    Abstract: The invention relates to a DSTN display with electromagnetic protection, comprising an active cell (1) and a passive cell (2), whereby the active cell (1) comprises electrodes (12, 13) and the passive cell (2) faces an observer of the display. The passive cell (2) comprises a metallic transparent layer (18, 19). Said metallic layer (18, 19) is electrically connected to a ground potential (G).
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: February 20, 2007
    Assignee: Siemens Aktiengesellschaft
    Inventors: Peter Brandt, Georg Nehm, Werner Paulsen, Jürgen Wenning
  • Driver circuit and method for driving electroluminescent lamp to emit light at brightness set level
    Patent number: 7081720
    Abstract: A method for driving an electroluminescent lamp to emit light at a brightness set level includes providing a variable bias voltage to the electroluminescent lamp. The variable bias voltage is increased with the duration of the on-time of the electroluminescent lamp. To stabilize the electroluminescent lamp at the brightness set level against aging, a closed loop control of the brightness of the electroluminescent lamp is applied, which is subject to said duration of the on-time the electroluminescent lamp.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: July 25, 2006
    Assignee: Siemens Aktiengesellschaft
    Inventors: Alf Burau, Heinrich Noll, Peter Schilling, Jürgen Wenning