Light-emitting element, display module, lighting module, light-emitting device, display device, electronic device, and lighting device
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United States of America Patent
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May 8, 2018
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app pub date -
Sep 28, 2017
filing date -
Aug 9, 2013
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Abstract
A tandem light-emitting element in which generation of crosstalk can be suppressed even when the element is applied to a high-definition display is provided. In the tandem light-emitting element, a layer in contact the anode side of an intermediate layer contains 2,9-bis(naphthalen-2-yl)-4,7-diphenyl-1,10-phenanthroline (abbreviation: NBPhen).
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