| 摘要 |
PROBLEM TO BE SOLVED: To provide a large area ceramic insulation type thin film element by enhancing mechanical strength of a ceramic sheet without increasing the thickness of the ferroelectric ceramic sheet of an electroluminescent functional part, by pasting the electroluminescent functional part having the same structure as a ceramic insulation type thin film EL element onto optional substrates such as various ceramic sheets, metallic sheets and the like. SOLUTION: Various phosphor thin films 2 are formed as a luminescent layer on the surface of the feroelectric ceramic sheet 3 serving as a material for a substrate and an insulating layer by well-known film depositing technology, and an electroluminescent element part manufactured by forming an electrode is then pasted on the substrate 5 made of any optional material such as a metal, various kinds of plastic, and the like. Thereby, a large area thin film EL element having a low driving voltage and high luminance can be achieved. COPYRIGHT: (C)2005,JPO&NCIPI
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