Patent ID: 9171894
Filing Date: 2015-10-27
Classification: H01L

Abstract:
1. An organic EL element including: a substrate; and a pixel region and an auxiliary region formed adjacent to each other on the substrate, comprising: a pixel electrode formed on a section of the substrate corresponding to the pixel region; an auxiliary connector formed on a section of the substrate corresponding to the auxiliary region; a first functional layer formed to cover the pixel electrode and the auxiliary connector; a light-emitting layer containing organic light-emitting material and formed on a section of the first functional layer corresponding to the pixel region; a second functional layer formed to cover the light-emitting layer and formed on a section of the first functional layer corresponding to the auxiliary region; and a common electrode formed to seamlessly cover a section of the second functional layer corresponding to the pixel region and a section of the second functional layer corresponding to the auxiliary region, wherein the first functional layer consists of an oxide compound of a transition metal, the second functional layer contains a fluoride compound of at least one of an alkali metal and an alkaline-earth metal, the common electrode contains a metal that causes reduction of the fluoride compound contained in the second functional layer, a maximum thickness of the section of the second functional layer corresponding to the auxiliary region is equal to or smaller than a maximum peak-to-valley height Rmax in a roughness profile of a surface of the section of the first functional layer corresponding to the auxiliary region, and the section of the second functional layer corresponding to the auxiliary region consists of portions of the second functional layer corresponding to the auxiliary region, wherein the portions of the second functional layer corresponding to the auxiliary region are in valleys of the surface of the section of the first functional layer corresponding to the auxiliary region with peaks of the surface of the section of the first functional layer corresponding to the auxiliary region being in direct contact with the common electrode.