Organic light emitting display device having layer to control charge transfer

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United States of America Patent

PATENT NO 11700735
APP PUB NO 20210202875A1
SERIAL NO

17200547

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Abstract

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An organic light emitting display device is discussed, which includes an anode on a substrate, a first hole transfer layer on the anode, a first emission layer on the first hole transfer layer, a first electron transfer layer on the first emission layer, an N-type charge generation layer on the first electron transfer layer, a second hole transfer layer on the N-type charge generation layer, a first emission control layer on the second hole transfer layer, an absolute value of a highest occupied molecular orbital (HOMO) energy level of the first emission control layer being greater than an absolute value of a HOMO energy level of the second hole transfer layer, a second emission layer on the first emission control layer, a second electron transfer layer on the second emission layer and a cathode on the second electron transfer layer.

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Patent Owner(s)

  • LG DISPLAY CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Park, EunJung Goyang-si, KR 19 72

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