Patents by Inventor Jose Ignacio Arreola

Jose Ignacio Arreola 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).

  • USING STANDARD CURRENT CURVES TO CORRECT NON-UNIFORMITY IN ACTIVE MATRIX EMISSIVE DISPLAYS
    Publication number: 20090195483
    Abstract: A plurality of gray level versus OLED current curves are generated by measuring many OLED panels from a stable manufacturing process, and those curves are stored as standard gray level versus OLED current curves. When a new OLED display is manufactured from the process, each of its sub-pixels is characterized as having the characteristics of one of the pre-generated standard gray level versus OLED current curves, based on a gray level versus OLED current measurement at a single gray level. This drastically reduces the time it takes to determine the TFT gate voltage versus OLED current characteristics of the sub-pixels in the OLED display. The OLED display can use the selected one of the pre-generated standard gray level versus OLED current curves to correct non-uniformities of the sub-pixels in the OLED display caused by non-uniform TFTs in the active matrix.
    Type: Application
    Filed: February 6, 2008
    Publication date: August 6, 2009
    Applicant: LEADIS TECHNOLOGY, INC.
    Inventors: Walter Edward Naugler, JR., Keunmyung Lee, Jose Ignacio Arreola