Patent ID: 7169482

Claim:
A device comprising: an anode; a cathode; and a luminescent region between the cathode and the anode, wherein the luminescent region comprises an anthracene derivative compound, a triazine derivative compound, and an additional anthracene or triazene derivative compound, wherein the anthracene derivative compounds are selected from the group consisting of formula I(A)(4) and of formula I(D): wherein substituents R 1 , R 2 , R 3 , and R 4 are each independently selected from the group consisting of: hydrogen; alkyl of from 1 to 24 carbon atoms; alkoxy of from 1 to 9 carbon atoms; triphenylsilyl; aryl of from 6 to 20 carbon atoms that is optionally substituted; heteroaryl of from 5 to 24 carbon atoms that is optionally substituted; halogen; and cyano group; wherein R 15 and R 16 are independently selected from the group consisting of hydrogen, an alkyl group with from 1 to about 6 carbon atoms, an aryl group with about 6 to about 30 carbon atoms; wherein X and Y are independently selected from the group consisting of hydrogen, an alkyl group with from 1 to about 6 carbon atoms, an aryl group with about 6 to about 30 carbon atoms, an alkoxy group with from 1 to about 6 carbon atoms, a halogen, a cyan group wherein the triazine derivative compounds are selected from the group consisting of formula II(A) and of formula II(B): wherein Ar 1 , Ar 2 , AR 3 , and Ar 4 are each independently aryl of from 6 to about 20 carbon atoms that is optionally substituted; wherein R 17 to R 18 are independently selected from the group consisting of hydrogen, an aliphatic with from 1 to about 6 carbon atoms, an alkoxy group with from 1 to about 6 carbon atoms, a halogen, a cyano group.