Patent ID: 7701130

Claim:
A luminous device comprising: an anode; a cathode; an organic compound layer provided between said anode and said cathode; and a conductive film comprising an inorganic compound provided between said organic compound layer and said cathode, wherein said conductive film comprises a material having a smaller work function than said cathode and an electric conductivity of 1×10 −10 S/m or more, wherein said cathode has a thickness of 1 to 20 nm, and wherein said conductive film has a thickness of 1 to 20 nm, wherein said conductive film comprises a material selected from the group consisting of yttrium boride, cerium boride, calcium sulfide, magnesium sulfide, strontium sulfide, magnesium boride, magnesium silicate, calcium silicate, strontium silicate and barium silicate, wherein said cathode is one selected from conductive materials having light-shading property and a high reflectivity, and wherein said conductive film is in contact with said cathode.