Process for the production of electroluminescence element, electroluminescence element
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United States of America Patent
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Aug 10, 1999
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N/A
app pub date -
Feb 19, 1998
filing date -
Sep 9, 1993
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Expired
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Abstract
An electroluminescence element provided with a luminescent layer sandwiched between two electrodes on an insulating substrate. The luminescent layer is composed of zinc sulfide with a fluoride or a luminescent center element added, wherein the X-ray diffraction spectrum thereof has only a single peak at an X-ray diffraction angle from the luminescent layer, ranging from 25.degree. to 30.degree. according to a thin film X-ray diffraction measurement method using Cu-Kd radiation, and no other peaks of the X-ray diffraction spectrum exist at an X-ray diffraction angle of 27.degree..
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