Patent ID: 8389303

Claim:
A method of manufacturing an organic EL element having a corrugated structure, the organic EL element comprising a transparent supporting substrate, a transparent electrode, an organic layer, and a metal electrode, the method comprising the steps of: laminating on the transparent supporting substrate a curable-resin layer having concavity and convexity formed thereon in a periodic arrangement in a way that a curable resin is applied onto the transparent supporting substrate, the curable resin is then cured with a master block being pressed thereto, and thereafter the master block is detached; and obtaining the organic EL element by laminating on the curable-resin layer, the transparent electrode, the organic layer, and the metal electrode individually so that a shape of the concavity and convexity formed on a surface of the curable-resin layer can be maintained; wherein a cross sectional shape of the curable-resin layer is a sinusoidal waveform, the pitch of concavity and convexity formed on the surface of the curable-resin layer is in a range from 10 nm to 1000 nm, and a height of the concavity and convexity is in a range from 10 nm to 200 nm, the organic layer is a laminated body composed of an anode buffer layer, a hole transport layer, and an electron transport layer, and a thickness of the transparent electrode is in a range from 20 nm to 500 nm, a thickness of the anode buffer layer is in a range from 1 nm to 50 nm, a thickness of the hole transport layer is in a range from 5 nm to 200 nm, a thickness of the electron transport layer is in a range from 5 nm to 200 nm, and a thickness of the metal electrode is in a range from 50 nm to 500 nm.