Red color emitting compounds for organic electroluminescent...

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Reexamination Certificate

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C428S917000, C313S504000, C313S506000, C257S102000, C257S103000, C564S305000, C544S035000, C544S102000

Reexamination Certificate

active

10745679

ABSTRACT:
The present invention relates to red color emitting compounds for an organic electroluminescent device (OELD), particularly to red color emitting compounds represented by the following formula (1) having high luminescence efficiency and enhanced thermal-stability:in-line-formulae description="In-line Formulae" end="lead"?R1—CH═CH—X—CH═CH—R2in-line-formulae description="In-line Formulae" end="tail"?wherein, R1, R2and X each are as defined below.

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