Pixel defining layer and its preparation method, display substrate and its preparation method, display device

Abstract

Embodiments of the present invention provide a pixel defining layer and its preparation method, a display substrate and its preparation method, and a display device, which relate to the field of display technology and can maintain the lyophobic property of the pixel defining layer for a long time. The preparation method of the pixel defining layer includes: forming a basic pattern of the pixel defining layer on a substrate; the basic pattern of the pixel defining layer includes a first pattern of an inorganic material, and the first pattern is located at the base of the basic pattern of the pixel defining layer Topmost: performing self-assembled monomolecular layer surface treatment on the first pattern to form a fluorinated monomolecular layer on the surface of the first pattern to form the pixel defining layer. For any display device that can be manufactured using inkjet printing.

Description

technical field [0001] The present invention relates to the field of display technology, and in particular, to a pixel defining layer and a preparation method, a display substrate and a preparation method, and a display device. Background technique [0002] In recent years, researchers have begun to try to apply inkjet printing technology to the preparation of planar functional materials, such as the preparation of organic material functional layers for organic electroluminescent diode displays, and color filter layers for liquid crystal displays. [0003] Take organic electroluminescent diode displays (OLEDs) as an example, such as figure 1 and figure 2 As shown, the organic electroluminescent diode includes a pixel area 01 and a non-pixel area 02, and the pixel area 01 is composed of a plurality of pixels 10, wherein each pixel 10 includes an anode, an organic material functional layer and a cathode( figure 1 and figure 2 are not identified). Wherein, when the organ...

AI Technical Summary

Problems solved by technology

In order to realize the liquid repellency of the pixel defining layer 20, the most conventional liquid repelling treatment method is to perform fluorine-containing plasma treatment on the basic pattern of the above pixel defining layer. However, due to the characteristics of plasma, its performance is generally not maintained for too long , so that in the face of a longer process process or a higher temperature annealing process, failure problems may occur

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