Organic light emitting diode devices using aromatic amine compounds with high and tunable glass transition temperatures
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United States of America Patent
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Issued Date -
May 16, 2002
app pub date -
Jun 28, 2001
filing date -
Jun 28, 2000
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Abandoned
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Abstract
The present invention relates to a novel class of thermostable hole-injection and hole-transport compounds having tunable glass transition temperatures and ionization potentials for use in organic light emitting diode ('OLED') devices. In particular, the compounds of the present invention comprise a trityl aniline core structure with various substituents attached to the nitrogen group, the structures of which allow for the adjustment of the glass transition temperatures and ionization potentials of the compounds. The present invention also relates to microdisplay devices comprising the compounds of the present invention in the hole-injection/hole-transport layers.
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