Patents by Inventor Douwe De Jong

Douwe 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).

  • Publication number: 20070241692
    Abstract: This invention relates to a driving arrangement for voltage driving of a passive matrix self-emitting display element (1), the driving arrangement comprising: voltage application circuitry (3) for applying a voltage across said self-emitting display element (1), switching devices (4) for switching said voltage between an on and an off state, a charge monitoring unit (5) for monitoring a total charge delivered to said self-emitting display element (1) due to said voltage application circuitry (3) during a drive cycle, and feedback circuitry (9) being arranged to switch said switching devices (4) to the off state, when a predetermined total charge has been delivered to said self-emitting display element (1) by said voltage application circuitry (3) during the drive cycle. The invention also relates to a method of driving such a display element (1), as well as a passive matrix self-emitting display device, comprising a plurality of such light emitting elements (1).
    Type: Application
    Filed: August 8, 2003
    Publication date: October 18, 2007
    Applicant: Koninklijke Philips Electronics N.V.
    Inventors: Douwe De Jong, Markus Klein
  • Publication number: 20060125744
    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: Application
    Filed: November 4, 2003
    Publication date: June 15, 2006
    Applicant: Koninklijke Philips Electronics N. V.
    Inventors: Markus Klein, Douwe De Jong, Serge Toussaint, Adrianus Sempel, Remco Los, Pieter Snijder, Olaf Gielkens