Display panel, manufacturing method thereof and display device

Abstract

Provided is a display panel, comprising: a substrate, and a planarization layer, an anode layer, a pixel definition layer, a cathode layer and an encapsulation layer sequentially stacked on the substrate; wherein in an edge area of the display panel, the pixel definition layer comprises a retaining wall group on the anode layer, comprising sub-retaining walls which are spaced apart, and the retaining wall group comprises a first side close to a display area and a second side away therefrom, wherein spaces of the sub-retaining walls form a path with a length greater than a straight line distance from the first side to the second side. The diffusion rate and diffusion range of the organic layer are controlled by performing anode hole optimization to form staggered sub-retaining walls, thereby reducing a number of edge retaining walls and reducing the edge area to increase a screen occupation ratio.

What is claimed is: 
     
         1 . A manufacturing method of a display panel, comprising:
 forming a planarization layer on a substrate;   forming an anode layer on the substrate and the planarization layer;   forming a pixel definition layer on the anode layer and the planarization layer, wherein the pixel definition layer outside a display area of the display panel comprises a retaining wall group, and the retaining wall group comprises a plurality of sub-retaining walls which are spaced apart, and the retaining wall group comprises a first side close to the display area of the display panel and a second side away from the display area, wherein spaces of the plurality of the sub-retaining walls, which are spaced apart, form a path, and a length of the path is greater than a straight line distance from the first side to the second side;   forming a cathode layer on the pixel definition layer and the retaining wall group;   forming an encapsulation layer on the cathode layer.   
     
     
         2 . The manufacturing method of the display panel according to  claim 1 , wherein forming the anode layer on the substrate and the planarization layer comprises:
 coating a metal layer on the substrate and the planarization layer, and patterning the metal layer to form the anode layer, and forming anode holes penetrating through the anode layer and being spaced apart outside the display area of the display panel;   forming the pixel definition layer on the anode layer and the planarization layer, wherein the pixel definition layer outside a display area of the display panel comprises a retaining wall group, and the retaining wall group comprises a plurality of sub-retaining walls which are spaced apart, comprises:   coating a pixel material layer on the anode layer and the planarization layer, and patterning the pixel material layer to form a pixel definition layer, wherein the pixel material layer outside the display area of the display panel is patterned to form the retaining wall group, and the sub-retaining walls of the retaining wall group are correspondingly disposed in the anode holes and protrude from the anode layer.