Patent ID: 7264891

Claim:
An organic electroluminescent device, comprising: a transparent substrate; an anode, disposed on the transparent substrate; an organic electroluminescent layer, disposed on the anode; and a cathode, disposed on the organic electroluminescent layer, wherein a material of the organic electroluminescent layer is a compound represented by a following chemical structure (1): wherein R 1 ˜R 4 are hydrogen, substituted or unsubstituted alkyl group, substituted or unsubstituted cycloalkyl group, substituted or unsubstituted alkyloxy group, substituted or unsubstituted alkenyl group, substituted or unsubstituted amino group, substituted or unsubstituted polycyclic aromatic group or a combination thereof; Z is a electron-donating group and is —NR 5 R 6 , wherein R 5 and R 6 are respectively a hydrogen, substituted alkyl having 1 to 10 carbons, unsubstituted alkyl having 1 to 10 carbons, substituted cycloalkyl having 1 to 10 carbons, unsubstituted cycloalkyl having 1 to 10 carbons, substituted alkyloxy having 1 to 10 carbons, unsubstituted alkyloxy having 1 to 10 carbons, substituted alkenyl having 1 to 10 carbons, unsubstituted alkenyl having 1 to 10 carbons, substituted amino, unsubstituted amino, substituted polycyclic aromatic having 6 to 10 carbons or unsubstituted polycyclic aromatic having 6 to 10 carbons; A is substituted or unsubstituted cyclohexene or naphthalene group; and B and C are electron withdrawing groups and attached to A as separate groups.