Organic electroluminescent device including thin film encapsulation structure and method for producing same

Abstract

This organic EL device () has a substrate (), a drive circuit layer (), a first inorganic protective layer (Pa), an organic planarizing layer (Pb), an organic EL element layer (), a second inorganic protective layer (Pa), and a TFE structure (). The TFE structure has a first inorganic barrier layer (), an organic barrier layer (), and a second inorganic barrier layer (). When viewed from a normal line of the substrate, the organic planarizing layer is formed within a region where the first inorganic protective layer is formed, while an organic EL element is disposed within a region where the organic planarizing layer is formed. The TFE structure has an exterior edge which intersects with a lead-out line () and which is situated between an exterior edge of the organic planarizing layer and an exterior edge of the first inorganic protective layer. In a portion where the first inorganic protective layer and the first inorganic barrier layer are in direct contact with each other on the lead-out line, the first inorganic barrier layer has, in a cross-section parallel to the line width direction of the lead-out line, a lateral face that is configured to have a taper angle θ () of less than 90°. The organic planarizing layer has a surface which exceeds 50 nm in arithmetic average roughness Ra, while the second inorganic protective layer has a surface that is not more than 50 nm in arithmetic average roughness Ra.