Organic light-emitting device, manufacturing method thereof, and image display system including same

Abstract

The invention discloses an organic light-emitting device, a manufacturing method thereof, and an image display system comprising the same. The organic light-emitting device includes a substrate, a first electrode and an auxiliary electrode are formed on the substrate, wherein the first electrode and the auxiliary electrode have a gap on the projection surface of the substrate and are electrically insulated from each other, and a pixel is defined A layer is located between the first electrode and the auxiliary electrode; an organic material layer is formed on the pixel definition layer, the first electrode and the auxiliary electrode; a second electrode is formed on the organic material layer; and, a conductive A pass element passes through the organic material layer to electrically connect the second electrode and the auxiliary electrode.

Description

technical field [0001] The present invention relates to organic light emitting devices, and more particularly to organic light emitting devices with auxiliary electrodes. Background technique [0002] The organic electroluminescent element is a photoelectric element that can convert electrical energy into light energy, and has high conversion efficiency. Its common application is as an illumination source, or as a display panel, and the like. Due to the characteristics of organic electroluminescent components, such as no viewing angle limitation, simple manufacturing process, low cost, high response speed, wide temperature range and full color, etc., which meet the requirements of display characteristics in the multimedia era, they have been used in recent years. Extensive research. [0003] In order to meet the requirements of flat panel displays, organic electroluminescent devices have been gradually developed towards large sizes in recent years, so as to provide suffici...

AI Technical Summary

Problems solved by technology

In the prior art, in order to ensure the smooth electrical connection between the auxiliary electrode and the transparent electrode on the light-emitting side, a high-precision metal mask (finemetal mask) must be used to form the organic material layer of the organic electroluminescent element in the manufacturing process, so as to avoid The organic material layer covers the auxiliary electrode, so that the electrode formed later cannot be successfully connected to the auxiliary electrode

However, as the pixel area becomes smaller and the display area becomes larger, the use of high-precision metal masks in the manufacturing process will cause the complexity and cost of the organic electroluminescent element evaporation manufacturing process to increase. The pixel size is getting smaller and smaller, and it is difficult to shrink the opening of the high-precision metal mask to a very small size, and because the opening is too small, it is also difficult to evaporate

In addition, as the size of the high-precision metal mask increases, the high-precision metal mask is easy to bend and deform due to the weight problem, resulting in the problem of alignment deviation

Images