Biphenyl derivative, material for organic electroluminescence device, and organic electroluminescence device using the same
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United States of America Patent
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Jul 14, 2009
Grant Date -
Jan 18, 2007
app pub date -
Jul 7, 2006
filing date -
Jul 14, 2005
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Abstract
A biphenyl derivative having a specific structure and an organic electroluminescent device having a long lifetime due to comprising at least one of organic thin film layers including a light emitting layer sandwiched between a pair of electrodes consisting of an anode and a cathode, wherein the organic thin film layer contains the biphenyl derivatives, singly or as a component of a mixture are provided, and also the biphenyl derivatives particularly suitable for a light emitting material of the organic EL device of the present invention is provided.
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