Patent ID: 7317280

Claim:
An organic light-emitting device comprising: a transparent substrate; an anode layer; a cathode layer; organic functional layers sandwiched between the anode layer and the cathode layer; and an encapsulation layer formed directly on at least one of the anode layer, the cathode layer, or the transparent substrate; wherein, the encapsulation layer includes a thin multilayer structure which has a period number of 1 to 10 alternating layers formed of a polymer material layer and a ceramic material layer; the encapsulation layer also includes a thick organic insulation layer on top of the thin multilayer structure, which is made up of polymer materials; wherein: the polymer material layers in the thin film structure are in the range of 50 to 1000 nm in thickness; the ceramic material layers in the thin film structure are in the range of 10 to 1000 nm in thickness; and the thick organic insulation layer in the encapsulation layer is in the range of 10 to 1000 μm in thickness.