Method for producing organic el device and organic el device

Abstract

A method for producing an organic EL device and the organic EL device, capable of enhancing reliability of the organic EL device by suppressing peeling caused by stress concentration to each layer end through reduction in the stress concentration even in the case of using a roll-to-roll process. The method includes: supplying a substrate from a delivery roll to a wind-up roll; forming a first electrode layer over the substrate; forming an organic EL layer over the first electrode layer; and forming a second electrode layer over the organic EL layer. The first electrode layer s formed using a shadow mask. At least a part of a side surface of the first electrode layer is a tapered surface of inwardly sloping from a lower side toward an upper side. An angle formed between the tapered surface and the surface of the substrate on the side over which the first electrode layer is formed is 1° or less.

Dependencies are inferred from the claim text.