Organic light-emitting device with electron blocking layer and trapping layer and organic light-emitting display using the same
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United States of America Patent
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Nov 19, 2019
Grant Date -
Feb 1, 2018
app pub date -
Jul 27, 2017
filing date -
Jul 29, 2016
priority date (Note) -
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Abstract
An organic light-emitting device includes: an anode, a hole transport layer over the anode, an electron blocking layer over the hole transport layer, an organic emitting layer contacting the electron blocking layer, an electron transport layer contacting the organic emitting layer, a cathode over the electron transport layer, and a trapping layer between the hole transport layer and the electron blocking layer, wherein a LUMO energy level of the trapping layer: differs from a HOMO energy level of the electron blocking layer within a range of 1 eV, or is equal to the HOMO energy level of the electron blocking layer.
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