Patents by Inventor Susumu Tanake

Susumu Tanake 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: 20050156828
    Abstract: The invention provides an organic LED display device of the digital drive type which has a display panel comprising a plurality of pixels 51. Each of the pixels 51 comprises an organic EL element 50, a drive transistor TR2 for effecting or interrupting the passage of current through the EL element 50 in response to the input of an on/off control signal, a write transistor TR1 to be brought into conduction upon receiving scanning voltage applied thereto from a scanning driver, a capacitance element C to be supplied with data voltage from a data driver by the write transistor TR1 conducting, and a comparator 9 for comparing a predetermined ramp voltage with the output voltage of the capacitance element C and supplying the result of comparison to the drive transistor TR2 as the on/off control signal.
    Type: Application
    Filed: December 9, 2002
    Publication date: July 21, 2005
    Inventors: Atsuhiro Yamashita, Haruhiko Murata, Yukio Mori, Masutaka Inoue, Shigeo Kinoshita, Susumu Tanake