Patent ID: 8772762

Claim:
An organic electroluminescent device comprising: a substrate; a first electrode formed on the substrate and comprising a pixel region; a partition wall formed on the substrate, partitioning the first electrode, and comprising a surface with a recessed and projected surface form; a luminescent medium layer formed on the pixel region and the partition wall, a film thickness of the partition wall being uneven according to the recessed and projected form, the luminescent medium layer being partially severed according to the recessed and projected form; and a second electrode formed on the luminescent medium layer, wherein the recessed and projected surface form is formed over substantially all surface portions of the partition wall at which the partition wall and the luminescent medium layer contact each other, a calculated average roughness Ra of the recessed and projected surface form is greater than or equal to 1 nm and less than or equal to 200 nm, an average interval between protected portions of a surface of the recessed and projected surface form is greater than or equal to 5 nm and less than or equal to 100 nm, and the recessed and projected surface form is configured to increase specific resistance of the luminescent medium layer in a film-surface direction and to restrain a leak current passing through the luminescent medium layer formed on the surface of the partition wall.