Patent ID: 6143434
Filing Date: 2000-11-07
Classification: C09B,H01L,Y10S

Abstract:
An organic electroluminescent element comprising a pair of electrodes and, formed therebetween, either a luminescent layer or plural thin organic-compound layers containing a luminescent layer, at least one of said layers being a layer containing an organic electroluminescent element material which is a compound represented by formula (I): ##STR11## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, and R.sub.6 each represents a hydrogen atom or a substituent; Z represents a group of atoms necessary for forming a five- or six-membered ring; R.sub.0 represents an aliphatic hydrocarbon group, an aryl group, or a heterocyclic group; n represents 0 or 1; L.sub.1 and L.sub.2 each represents a methine group or a substituted methine group, provided that plural L.sub.1 's, plural L.sub.2 's, or L.sub.1 and L.sub.2 as a whole may form a four- to six-membered ring formed through substituents thereof; m represents 0, 1, 2, or 3; Q represents a hydrogen atom, an aliphatic hydrocarbon group, an aryl group, or a heterocyclic group, provided that Q may be bonded to R.sub.0 to form a ring; X.sup.- represents an anion; and r represents an integer of 0 or larger, provided that r is 0 when the compound forms an intramolecular salt.