Display panel, manufacturing method thereof and display device

Abstract

The invention provides a display panel, a manufacturing method thereof and a display device, and relates to the technical field of display. The display panel comprises a substrate, a water and oxygen barrier layer and a light-emitting device, wherein the substrate comprises a display area and a non-display area enclosing the display area, the water and oxygen barrier layer comprises a display area and a non-display area enclosing the display area and is opposite to the substrate, and the light-emitting device is arranged between the display area of the substrate and the display area of the water and oxygen barrier layer. The non-display area of the substrate is provided with at least one retaining wall projecting towards the water and oxygen barrier layer, the non-display area of the water and oxygen barrier layer is provided with a second retaining wall projecting towards the substrate, and the first retaining wall and the second retaining wall respectively enclose the light-emitting device. By adjusting the mutually matching structure of lateral retaining walls, the length of a lateral water and oxygen infiltration path is increased, water and oxygen permeation rate is slowed down, and accordingly, stability of an OLED (organic light emitting diode) device is improved.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a display panel, a manufacturing method thereof, and a display device. Background technique [0002] figure 1 It is a sectional view of a display panel in the prior art. figure 2 for figure 1 Z-direction bottom view of the water-oxygen barrier layer. image 3 for figure 1 Z-direction top view of the middle substrate. Such as Figures 1 to 3 As shown, it is a packaging technology that adopts lateral barriers around the light-emitting device, wherein the packaging glue 105 is passed between the substrate 101 and the water-oxygen barrier layer 102, and the light-emitting device 103 is packaged between the display area of ​​the substrate 101 and the water. Between the display areas between the oxygen barrier layers 102, and in order to prevent water and oxygen from entering the light-emitting device 103 from the side, several ring-shaped retaining walls 104 protrude f...

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Problems solved by technology

[0003] However, since the first retaining wall 1041, the second retaining wall 1042, and the third retaining wall 1043 all extend from the water-oxygen barrier layer 102 toward the substrate 101, the first retaining wall 1041, the second retaining wall 1042, the third retaining wall The three retaining walls 1043 and the substrate 101 (there is no retaining wall structure on the substrate 101) are usually not sealed. The linear path D between them enters and directly contacts the thin film encapsulation layer (not shown in the figure) on the upper surface of the light-emitting device 103, so the above-mentioned retaining wall structure needs to be further improved and improved.

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