Patents by Inventor Douwe Thomas De Jong

Douwe Thomas De Jong 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).

  • Display device with pre-charging arrangement
    Patent number: 7446744
    Abstract: The invention relates to a display device comprising a plurality of light emitting elements (1), wherein at least one of the elements has an associated capacitor (C1). The display device comprises pre-charging means (7;8) for generating a pre-charge signal for charging the associated capacitor (C1) at least partly. The pre-charging means (7;8) are adapted for generating a pre-charge signal comprising at least a first pre-charge signal in a first pre-charge stage and a second pre-charge signal in a second pre-charge stage. The pre-charge signal preferably comprises a current pre-charge signal followed by a voltage pre-charge signal. The combined pre-charge signal has the advantage of fast, but accurate pre-charging.
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: November 4, 2008
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Markus Heinrich Klein, Douwe Thomas De Jong, Serge Leon Gerard Toussaint, Adrianus Sempel, Remco Los, Pieter Jacob Snijder, Olaf Gielkens