Organic el device and production method therefor

Abstract

This organic EL device (100) has a substrate (1), a drive circuit layer (2), a first inorganic protective layer (2Pa), an organic planarizing layer (2Pb), an organic EL element layer (3), and a TFE structure (10). The TFE structure has a first inorganic barrier layer (12), an organic barrier layer (14), and a second inorganic barrier layer (16). When viewed from a normal line of the substrate, theorganic 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 (32) and which is situated between an exterior edge of the organic planarizing layer and an exterior edge of thefirst 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 theta (12) of less than 90 degrees. Theorganic planarizing layer has a surface that is not more than 50 nm in arithmetic average roughness Ra.

Description

technical field [0001] The present invention relates to an organic EL device (such as an organic EL display device and an organic EL lighting device) and a manufacturing method thereof. Background technique [0002] Organic EL (Electro Luminescence: electroluminescent) display devices have begun to be put into practical use. One of the characteristics of an organic EL display device is that a flexible display device can be obtained. The organic EL display device includes at least one organic EL element (Organic Light Emitting Diode: OLED) and at least one TFT (Thin Film Transistor: thin film transistor) for controlling the current supplied to each OLED for each pixel. Hereinafter, the organic EL display device is referred to as an OLED display device. Thus, an OLED display device having a switching element such as a TFT for each OLED is called an active matrix OLED display device. In addition, a substrate on which TFTs and OLEDs are formed is called an element substrate. ...

AI Technical Summary

Problems solved by technology

Since the formation of the organic barrier layer using printing technology is carried out in the atmosphere or in a nitrogen atmosphere, the formation of the inorganic barrier layer is carried out in a vacuum. Therefore, in the process of forming the thin film sealing structure, the element substrate is taken out of the vacuum chamber and put in. Low mass production

Images