An organic light emitting display device is disclosed. The device includes a substrate; a first electrode formed on the substrate; an organic layer including at least an emission layer and formed on the first electrode; and a second electrode formed on the organic layer. The emission layer includes a host and a dopant material. The dopant is one of materials having the structure of Formula 1, ##STR00001## where R may be one selected from the group consisting of ethylene, an ethylene derivative, stilbene, a stilbene derivative. Also, R1 to R6 may be different from or equal to each other, and each is selected from the group consisting of a hydrogen atom, a halogen atom, a substituted or unsubstituted C.sub.1 to C.sub.20 alkyl group, a substituted or unsubstituted C.sub.1 to C.sub.20 alkoxy group, a substituted or unsubstituted C.sub.5 to C.sub.20 aryl group, a C.sub.3 to C.sub.30 heterocyclic group, and an aliphatic C.sub.3 to C.sub.30 hydrocarbon group.