A double-sided organic electro-luminescent device. The device comprises a substrate having a first pixel region and a second pixel region adjacent thereto. First and second organic light-emitting diodes are disposed in the first and second pixel regions, respectively, in which the light-emitting direction of the first organic light-emitting diode is opposite that of the second organic light-emitting diode. First and second thin film transistors are disposed in the second pixel region, in which the first thin film transistor is electrically connected to the first organic light-emitting diode and the second thin film transistor is electrically connected to the second organic light-emitting diode.