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Light emitting ceramic device and method for fabricating the same

United States Patent

November 30, 2004
View the Complete Patent at the US Patent & Trademark Office
A light-emitting ceramic based panel, hereafter termed "electroceramescent" panel, and alternative methods of fabrication for the same are claimed. The electroceramescent panel is formed on a substrate providing mechanical support as well as serving as the base electrode for the device. One or more semiconductive ceramic layers directly overlay the substrate, and electrical conductivity and ionic diffusion are controlled. Light emitting regions overlay the semiconductive ceramic layers, and said regions consist sequentially of a layer of a ceramic insulation layer and an electroluminescent layer, comprised of doped phosphors or the equivalent. One or more conductive top electrode layers having optically transmissive areas overlay the light emitting regions, and a multi-layered top barrier cover comprising one or more optically transmissive non-combustible insulation layers overlay said top electrode regions.
Valentine; Paul (Hornell, NY), Edwards; Doreen D. (Wellsville, NY), Walker, Jr.; William John (Alfred, NY), Slack; Lyle H. (Wellsville, NY), Brown; Wayne Douglas (Williamsburg, WV), Osborne; Cathy (Kieffer, WV), Norton; Michael (Huntington, WV), Begley; Richard (Huntington, WV)
10/ 301,341
November 21, 2002
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT The United States government has a paid-up license in this invention and the right in limited circumstances to require the patent owner to license others on reasonable terms as provided for by the terms of contract DE-FC26-99FT40631 awarded by the U.S. Department of Energy.