Electroluminescent Element and Lighting Apparatus Including Same
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United States of America Patent
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Jul 14, 2016
app pub date -
Oct 23, 2013
filing date -
Nov 14, 2012
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Abstract
An organic EL element includes a transparent substrate, a first transparent electrode layer, an organic electroluminescent layer, a second transparent electrode layer, and a reflecting layer. The refractive index of the transparent substrate is lower than the refractive index of any film included in the organic electroluminescent layer. Both the refractive index of the first transparent electrode layer and the refractive index of the second transparent electrode layer are lower than the refractive index of any film included in the organic electroluminescent layer.
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