Patents by Inventor Gerben J. Hekstra

Gerben J. Hekstra 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).

  • Method and device for driving an active matrix display panel
    Patent number: 8384631
    Abstract: An active matrix display panel comprises a substrate, an array of pixel circuits being arranged in a matrix of at least one column and a plurality of rows on the substrate, each pixel circuit comprising a light-emitting element, capable of emitting light of an intensity determined by the value of a current passed through it, and at least one column line, each column line arranged to conduct a reference current, provided by a current driving circuit, when connected to the panel. The pixel circuits in a column are divided into a plurality of groups of at least one pixel circuit. The active matrix display panel comprises at least one current mirror circuit associated with a first group, comprising a first current mirror, arranged to mirror a reference current flowing through a column line to a first current mirror output.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: February 26, 2013
    Assignee: Chimei Innolux Corporation
    Inventors: Adrianus Sempel, Gerben J. Hekstra, David A. Fish, Alan G. Kanpp, Andrea Giraldo, Mark T. Johnson
  • METHOD AND DEVICE FOR DRIVING AN ACTIVE MATRIX DISPLAY PANEL
    Publication number: 20110109670
    Abstract: An active matrix display panel comprises a substrate, an array of pixel circuits being arranged in a matrix of at least one column and a plurality of rows on the substrate, each pixel circuit comprising a light-emitting element, capable of emitting light of an intensity determined by the value of a current passed through it, and at least one column line, each column line arranged to conduct a reference current, provided by a current driving circuit, when connected to the panel. The pixel circuits in a column are divided into a plurality of groups of at least one pixel circuit. The active matrix display panel comprises at least one current mirror circuit associated with a first group, comprising a first current mirror, arranged to mirror a reference current flowing through a column line to a first current mirror output.
    Type: Application
    Filed: November 16, 2010
    Publication date: May 12, 2011
    Applicant: TPO Displays Corp.
    Inventors: Adrianus Sempel, Gerben J. Hekstra, David A. Fish, Alan G. Knapp, Andrea Giraldo, Mark T. Johnson
  • Method and device for driving an active matrix display panel
    Patent number: 7859493
    Abstract: An active matrix display panel comprises a substrate, array of pixel circuits being arranged in a matrix of at least one column and a plurality of rows on the substrate, each pixel circuit comprising a light-emitting element, capable of emitting light of an intensity determined by the value of a current passed through it, and at least one column line, each column line arranged to conduct a reference current, provided by a current driving circuit, when connected to the panel. The pixel circuits in a column are divided into a plurality of groups of at least one pixel circuit. The active matrix display panel comprises at least one current mirror circuit associated with a first group, comprising a first current mirror, arranged to mirror a reference current flowing through a column line to a first current mirror output.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: December 28, 2010
    Assignee: TPO Displays Corp.
    Inventors: Adrianus Sempel, Gerben J. Hekstra, David A. Fish, Alan G. Knapp, Andrea Giraldo, Mark T. Johnson