Organic electroluminescent display panel and manufacturing method thereof, and display device

Abstract

The invention discloses an organic electroluminescent display panel and a manufacturing method thereof, and a display device, so that the color mixing risk of the organic electroluminescent display panel is reduced and the display effect of the organic electroluminescent display panel is improved. The organic electroluminescent display panel comprises a substrate and a pixel defining barrier wallarranged on the substrate. The pixel defining barrier wall defines a plurality of pixel regions for accommodating organic electroluminescent devices; and an accommodation groove structure is arrangedat one side, far away from the substrate, of the pixel defining barrier wall. The side wall, facing the pixel regions, of the pixel defining barrier wall includes a hydrophilic side wall part approaching the substrate and a hydrophobic side wall part adjacent to the hydrophilic side wall part; the inner wall of the accommodation groove structure is a hydrophilic inner wall; and the top, except theaccommodation groove structure, of the pixel defining barrier wall is a hydrophobic top wall.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an organic electroluminescent display panel, a manufacturing method thereof, and a display device. Background technique [0002] Organic electroluminescence is a phenomenon in which organic materials are excited by electric energy to emit light. Organic electroluminescent display panels have low driving voltage, high luminous brightness, high luminous efficiency, wide luminous viewing angle, fast response speed, ultra-thin, light weight and compatible flexibility. Substrate and other advantages occupy an important position in the display field. [0003] Please refer to figure 1 and figure 2 , a partial structural schematic diagram of an organic electroluminescent display panel in the prior art. The organic electroluminescent display panel includes a substrate 0100 and a pixel-defining wall 01 disposed on the substrate 0100 and defining a plurality of pixel regions 02, each E...

AI Technical Summary

Problems solved by technology

In the inkjet printing process, the organic light-emitting layer is made of liquid organic light-emitting materials dissolved in a solvent through inkjet printing technology. If the alignment of the liquid material may be inaccurate or the amount of inkjet fluctuates, the liquid organic light-emitting material may enter the pixel area where the light-emitting layer of other colors is located or the pixel area where the light-emitting layer of another color is to be formed, resulting in different color organic light-emitting materials. Mixing, causing the light-emitting layer of the organic electroluminescent display panel to mix colors, seriously affecting the display effect

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