An organic electroluminescent device includes a substrate, a first anode formed on the substrate with a reflectivity of 60% or higher, a second anode formed on the first anode, wherein the second anode includes a conductive metal or an oxide thereof having a work function of 4. The N-type semiconductor layer is mounted on the substrate. By sharing one adapter for adapting the coefficients between two or more equalizers, the calculation load can be reduced.