Patents Represented by Attorney William E. Kock
  • Patent number: 6064151
    Abstract: An organic electroluminescent device with enhanced performance includes anode and cathode electrodes with organic material, single or multiple layers, positioned therebetween and in juxtaposition to each of the electrodes. The organic material is doped with an AMC dopant with a concentration in a range of approximately 0.1 Wt % to 15 Wt % in a region of the organic material adjacent to the cathode electrode. This doped region has a thickness in a range of approximately 20 .ANG. to 600 .ANG.. The dopant includes either a low work function alkaline metal compound, such as LiF, LiCl, KBr, MgF.sub.2, LiO.sub.2, MgO.sub.x, CaO.sub.x, and CsO.sub.x or a low work function alkaline metal alloy, such as Li--Al, Li--In, Sr--Al, Cs--Al.
    Type: Grant
    Filed: December 8, 1997
    Date of Patent: May 16, 2000
    Assignee: Motorola, Inc.
    Inventors: Vi-en Choong, Ji-Hai Xu, Franky So, Song Q. Shi
  • Patent number: 4500831
    Abstract: A current source circuit is provided wherein the chip area consumption of a Miller multiplication capacitor is substantially reduced. A zero is created in addition to the pole created by the Miller multiplication capacitor. A first transistor is biased by a biasing means and has a base coupled to the emitter of a second transistor by a capacitor. The base of the second transistor is connected to the collector of the first transistor. A resistor is coupled between the emitter of the second transistor and ground.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: February 19, 1985
    Assignee: Motorola, Inc.
    Inventor: M. Faheem Akram