Organic electroluminescent device
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United States of America Patent
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-
Dec 20, 1994
Grant Date -
N/A
app pub date -
Mar 26, 1993
filing date -
Mar 27, 1992
priority date (Note) -
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status (Latency Note)
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Abstract
An organic electroluminescent device having an organic emitting layer and a hole transport layer laminated with each other and arranged between a cathode and an anode, and the hole transport layer is made of tris-phenothiazinyl-triphenylamine or tris-phenoxazinyl-triphenylamine derivative. The hole transport layer has a high heat-resistant property and high conductivity to improve durability and emits light at a high luminance and a high efficiency upon application of a low voltage.
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