Organic electroluminescence device and method for preparing same

Abstract

The invention provides an organic electroluminescence device and a method for preparing the same. The organic electroluminescence device comprises a baseplate, wherein the baseplate is provided with pixel separation walls, the pixel separation walls are composed of at least two organic material isolating layers in a stacking manner, and the wetting properties of the adjacent organic material isolating layers are different. The method for preparing the organic electroluminescence device provided by the invention comprises the following steps of: depositing a bottom electrode and a pattern, preparing two layers or multiple layers of the pixel separation walls; and depositing and preparing a functional layer, and sequentially depositing a cathode, a protective layer or a packaging layer. According to the organic electroluminescence device provided by the invention, the pixel separation walls are composed of at least two organic material isolating layers in a stacking manner, and the wetting properties of adjacent organic material isolating layers are different, the bonding force of the isolate layers in layer upon layer of organic materials is generally stronger, and the property of a device is good. The method for preparing the organic electroluminescence device provided by the invention has the advantages that the steps are simple, and therefore, the manufacturing cost is saved.

Description

technical field [0001] The invention relates to the field of electroluminescence, in particular to an organic electroluminescence device and a method for preparing the organic electroluminescence device. Background technique [0002] In recent years, as a new type of flat panel display, organic electroluminescence display has received more and more attention. Organic electroluminescent displays are characterized by thinness, wide viewing angle, low power consumption, fast response speed, and flexible display. Since it is an active light-emitting device, it is considered to have a great advantage in displaying high-definition high-speed video, and it is developing toward practicality in recent years. The core component of an organic electroluminescent display is an organic electroluminescent device. [0003] Forming the light-emitting layer of an organic electroluminescent device (OLED), etc., can generally be divided into small molecule materials and high molecule (polymer...

AI Technical Summary

Problems solved by technology

[0007] (1) For the mixed pixel partition wall system composed of inorganic and organic components in the first method, the preparation methods and processes of the two-layer films are usually quite different, and the corresponding hardware equipment is also completely different, so the input requirements for hardware equipment Larger, thus resulting in higher actual production costs

[0008] (2) In addition, the adhesion between the inorganic layer and the organic layer is generally weak, and it is easier to separate the inorganic layer and the organic layer when subjected to external force or bending, resulting in a decrease in device performance

[0009] (3) For thin films of inorganic materials, chemical vapor deposition, physical vapor deposition, atomic layer deposition or evaporation are often used to prepare them. The production process requires special reactive gases (usually toxic gases) and high energy consumption. etc. At the same time, these processes are generally carried out under a certain degree of vacuum, and the investment and performance requirements for equipment are relatively high.

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