TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Layer: The protective layer is mixed layer containing insulating material(s) (A) and electrical conducting material(s) (B), or composite layer having layers each containing separately materials (A,B). The protective layer is adjoined and provided at electron injection layer. The protective layer is patterned. The organic layer has one or more light emitting layers emitting light simultaneously. The protective layer is provided between the light emitting layers. Preferred Material: The insulating material is silicon compound. The material (B) is metal, inorganic semiconductor, pigment or charge transfer complex. The semiconductor is chosen from group 12-16 and group 18 of periodic table. The charge transfer complex is formed by two or more types of pigments, and compound(s) chosen from compound containing electron donor and/or electron accepting compound. Preferred Properties: The work function of metal and/or inorganic semiconductor is 4.2 eV or more. The pigment is capable of forming into a film by vacuum deposition. Preferred Method: The organic layer and/or electrode formed by wet forming method, using solvent free of hydroxyl group.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Layer: The protective layer is mixed layer containing insulating material(s) (A) and electrical conducting material(s) (B), or composite layer having layers each containing separately materials (A,B). The protective layer is adjoined and provided at electron injection layer. The protective layer is patterned. The organic layer has one or more light emitting layers emitting light simultaneously. The protective layer is provided between the light emitting layers. Preferred Material: The insulating material is silicon compound. The material (B) is metal, inorganic semiconductor, pigment or charge transfer complex. The semiconductor is chosen from group 12-16 and group 18 of periodic table. The charge transfer complex is formed by two or more types of pigments, and compound(s) chosen from compound containing electron donor and/or electron accepting compound. Preferred Properties: The work function of metal and/or inorganic semiconductor is 4.2 eV or more. The pigment is capable of forming into a film by vacuum deposition. Preferred Method: The organic layer and/or electrode formed by wet forming method, using solvent free of hydroxyl group.