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

Abstract

The embodiment of the invention provides a pixel defining layer and a preparation method, a display substrate and a preparation method and a display device, relates to the technical field of display, and aims to maintain the lyophobic property of a pixel defining layer for a long time. The preparation method of the pixel defining layer comprises the following steps: forming a basic pattern of the pixel defining layer on a substrate, wherein the basic pattern of the pixel defining layer comprises a first pattern of an inorganic material, and the first pattern is positioned most above the basic pattern of the pixel defining layer; performing self-assembled monomolecular layer surface treatment on the first pattern, namely, forming a fluoro-monomolecular layer on the surface of the first pattern, and thus forming the pixel defining layer. The pixel defining layer can be used in any display device manufactured in an ink jet printing mode.

Description

technical field [0001] The invention relates to the field of display technology, 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] Taking organic light-emitting diode display (OLED) as an example, such as figure 1 with figure 2 As shown, the organic electroluminescence 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 cathode( figure 1 with figure 2 are not identified). Wherein, when inkjet printing is used to...

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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