Display substrate and manufacturing method thereof

Abstract

The invention discloses a display substrate and a manufacturing method thereof and aims to solve the problem that during an existing OLED substrate manufacturing process, an organic light-emitting function layer bends due to an infiltration effect, light-emitting unevenness of internal edge areas of pixels is caused, and the light-emitting performance of a whole device is affected. The method includes: forming a pixel definition layer in the non-display area of a substrate, wherein the pixel definition layer comprises an upper hydrophobic layer and a lower hydrophilic layer; forming the organic light-emitting function layer in the display area of the substrate; forming a blocking film layer only covering the non-display area on the pixel definition layer. The manufacturing method has the advantages that during display substrate manufacturing, the edge areas, causing the light-emitting unevenness, of the organic light-emitting function layer in the non-display area can be blocked by the blocking film layer, the light-emitting unevenness in the pixels is improved, and the light-emitting performance of the whole display substrate is increased.

Description

technical field [0001] The invention relates to the technical field of display substrates, in particular to a method for manufacturing a display substrate and a display substrate. Background technique [0002] At present, in the process flow of making OLED (Organic Light-Emitting Diode, organic light-emitting diode) substrates, after the pixel definition layer is made, the acrylic or polyimide material in the pixel definition layer material is deposited below to form the pixel definition layer. The lower layer of the pixel definition layer; and the fluorine-containing resin material in the material of the pixel definition layer floats to the surface to form the upper layer of the pixel definition layer. [0003] Since the material of the lower layer of the pixel definition layer is a hydrophilic material, and the material of the upper layer of the pixel definition layer is a hydrophobic material, after the pixel definition layer is fabricated, during the deposition process o...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a method for manufacturing a display substrate and a display substrate, which are used to solve the problem that the organic light-emitting functional layer will bend its shape due to wetting during the manufacturing process of the existing OLED substrate. In turn, it leads to uneven luminescence in the edge area inside the pixel, which affects the luminescence performance of the entire device.

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