Organic electroluminescent light emitting device comprising an anode having a light transmittance of 30 to 70%
AssigneeTDK Corporation
InventorsMichio Arai, Hiroshi Tanabe
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Abstract
An organic EL light emitting device with some contrast improvement is provided at low cost yet with no provision of an antireflection coating film. The device comprises a transparent substrate, and an anode, a light emitting layer and a cathode formed thereon in the described order. The anode contains indium oxide doped with tin and/or zinc, and iron in such a way as to have a light transmittance of 30 to 70% in a light emitting wavelength range.
Claims3
An organic electroluminescent light emitting device comprising a transparent substrate, and an anode, a light emitting layer and a cathode formed thereon in the described order, wherein:
- said anode comprises indium oxide doped with an oxygen depletion type tin, zinc or tin and zinc, said anode having a light transmittance of 30 to 70% in a light emitting wavelength range.
Dependencies are inferred from the claim text.