The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 15, 1989
Filed:
May. 21, 1986
Scott Anderson, Sr, Champaign, IL (US);
Advanced Lighting International, Oak Wood Village, OH (US);
Abstract
A method of producing electroluminescence without a chemical reaction by providing a metal oxide containing electron traps, (i.e., holes or distortion of the lattice of the oxide by impurities or surface states), providing free electrons at an energy level in the conduction band and trapping the electrons to release photons. Alternatively, electroluminescence may be produced without a chemical reaction by the decay of the energy level of electrons from an excited state which results from collision of accelerated free electrons with ions in the oxide, the free electrons being provided externally of the oxide (e.g., by an electron gun or the application of a high field to an insulator contiguous to the oxide) or by space charges within the oxide or adjacent to the boundary thereof. Electroluminescing lamps are also disclosed.