Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
March 29, 2011
Patent Application Number
11403708
Date Filed
April 13, 2006
Patent Primary Examiner
Patent abstract
A novel laminate is provided to improve the operating stability of thioaluminate based phosphors used in ac thick film dielectric electroluminescent displays. The novel structure comprises a rare earth activated alkaline earth thioaluminate phosphor thin film layer and a magnesium oxide or magnesium oxide containing layer provided directly adjacent and in contact with the bottom of the phosphor thin film layer. The invention is particularly applicable to phosphors used in electroluminescent displays that employ thick dielectric layers subject to high processing temperatures to form and activate the phosphor films.
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