ORGANIC ELECTROLUMINESCENT DEVICE
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United States of America Patent
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Dec 1, 2022
app pub date -
Jun 18, 2020
filing date -
Jun 18, 2020
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Abstract
An organic electroluminescent device includes an organic functional layer which is provided between a light emitting layer and an electron transport region, and has a refractive index equal to or greater than the refractive index of the corresponding light emitting layer. The organic electroluminescent device simultaneously exhibits high luminous efficiency, low driving voltage, long service life, and the like.
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