Display apparatus
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United States of America Patent
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Dec 23, 2014
Issued Date -
N/A
app pub date -
Oct 30, 2012
filing date -
Oct 31, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A display with organic electroluminescent elements each having an optical-interference structure includes; a blue-light emitting layer containing a host material and a light emitting material, where lowest unoccupied molecular orbital of a hole-transporting layer is smaller than that of the host material and highest occupied molecular orbital (HOMO) of the host material is larger than that of the hole-transporting layer by 0.5 eV or lower; and a film-thickness adjustment layer disposed between a light emitting layer and the hole-transporting layer of a red-light emitting electroluminescent element or a green-light emitting electroluminescent element, where the hole-mobility of the adjustment layer is higher than the carrier-mobility of the light emitting layer of the electroluminescent element having the adjustment layer, and HOMO of the adjustment layer is not higher than that of the hole-transporting layer and not lower than that of the light emitting material in the light emitting layer thereof.
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