Organic electroluminescence device that includes compound having benzoazole structure
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United States of America Patent
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Sep 6, 2022
Grant Date -
Nov 26, 2020
app pub date -
Jul 25, 2018
filing date -
Aug 4, 2017
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Abstract
It is an object of the present invention to provide an organic EL device in which, as a highly efficient and highly durable organic EL material, various materials excelling in electron injection/transport performance, hole blocking performance, hole resistance performance, exciton confinement performance, stability in a film state, and durability, are combined so that properties of each material can be effectively demonstrated, thereby achieving (1) high light emission efficiency and power efficiency, (2) low luminescence starting voltage, (3) low practical driving voltage, and (4) particularly long lifetime.
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