Patents Examined by B. R. R. Nolloway
  • Non-single crystal electroluminescent device
    Patent number: 4914490
    Abstract: A light emitting device has a luminescent layer having at least two layers of a non-single crystalline material containing silicon atoms, carbon atoms and hydrogen atoms laminated and having a homojunction, and at least a pair of electrodes connected electrically to said luminescent layer, the non-single crystalline silicon layer having an optical band gap of 2.0 eV or higher and a localized level density at mid-gap of 5.times.10.sup.16 cm.sup.-3 .multidot.eV.sup.-1 or less.
    Type: Grant
    Filed: January 30, 1989
    Date of Patent: April 3, 1990
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuji Takasu, Masafumi Sano, Hisanori Tsuda, Yutaka Hirai