COMPOUND AND ORGANIC ELECTRICAL ELEMENT USING SAME, AND ELECTRONIC DEVICE AND HEAT-RESISTANCE MEASURING METHOD THEREWITH
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United States of America Patent
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Dec 19, 2013
app pub date -
Feb 2, 2012
filing date -
Feb 16, 2011
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Abstract
The present invention provides a diphenyl diamine derivative which is a combination of a nitrogen-containing diphenyl fluorenyl group and a spiro fluorenyl group; an organic electroluminescent device using the same; and a display apparatus which uses the organic electroluminescent device.
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