Organic electroluminescence element
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United States of America Patent
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Oct 25, 2011
Grant Date -
Jan 14, 2010
app pub date -
Jul 20, 2007
filing date -
Aug 4, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention provides an organic electroluminescence element which comprises a hole transporting layer which comprises a tris(p-terphenyl-4-yl)amine represented by the general formula (I)are each independently a hydrogen atom, an alkyl group, a cycloalkyl group which may have substituents or an aryl group which may have substituents as a hole transporting agent, and a hole injecting layer which comprises a hole injecting agent comprising an aromatic tertiary amine having an ionization potential in the range of 5.2-5.6 eV. This organic electroluminescence element can be driven at a low voltage with high efficiency and at high luminance.
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