Target is to provide an organic compound material having a bipolar character.A quinoxaline derivative represented by a general formula (1) is provided. In the formula, R.sup.1-R.sup.12 each independently represents a hydrogen atom, a halogen atom, a lower alkyl group, an alkoxy group, an acyl group, a nitro group, a cyano group, an amino group, a dialkylamino group, a diarylamino group, a vinyl group, an aryl group, or a heterocyclic residue group. R.sup.9 and R.sup.10, R.sup.10 and R.sup.11, and R.sup.11 and R.sup.12 are each independent or respectively mutually bonded to form an aromatic ring. Ar.sup.1-Ar.sup.4 each independently represents an aryl group or a heterocyclic residue group. Ar.sup.1, Ar.sup.2, Ar.sup.3 and Ar.sup.4 are each independent or Ar.sup.1 and Ar.sup.2, and Ar.sup.3 and Ar.sup.4 are respectively mutually bonded directly, or Ar.sup.1 and Ar.sup.3, and Ar.sup.3 and Ar.sup.4 are bonded via oxygen (O), sulfur (S) or a carbonyl group. ##STR00001##

 
Web www.patentalert.com

< Light-emitting diode, its manufacturing method, and display device using the same

> Carbene metal complexes as OLED materials

> Organometallic compounds and display device employing the same

~ 00549