Patents by Inventor Chul Chang

Chul Chang 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).

  • Emitter structure with a protected gate electrode for an electron-emitting device
    Publication number: 20050236963
    Abstract: A cathode structure of a field emission device includes a gate electrode that is protected by a passivation layer. In one method for manufacturing such a field emission device, an emitter hole is formed through an insulating layer such that the passivation layer overhangs the gate layer, which overhangs an insulating layer. When used in a display system, the gate layer is exposed to an emitter electrode but shielded from an anode.
    Type: Application
    Filed: April 14, 2005
    Publication date: October 27, 2005
    Inventors: Sung Kang, Woo Bae, Jong Son, Chul Chang, Jung Kim