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Organic electroluminescence display panel, manufacturing method thereof and display device

A technology of electroluminescent display and manufacturing method, which is applied in the direction of circuits, electrical components, and electrical solid devices, and can solve problems such as poor uniformity of film formation, reduce leakage, reduce unevenness of light and shade, and suppress pixel edges light to dark effect

Pending Publication Date: 2021-01-05
BOE TECH GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide an organic electroluminescence display panel, a manufacturing method thereof, and a display device, so as to solve the problem in the prior art that the film formation uniformity of the film layer formed by inkjet printing is poor

Method used

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  • Organic electroluminescence display panel, manufacturing method thereof and display device
  • Organic electroluminescence display panel, manufacturing method thereof and display device
  • Organic electroluminescence display panel, manufacturing method thereof and display device

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Embodiment Construction

[0054] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0055] A method for manufacturing an organic electroluminescence display panel provided by an embodiment of the present invention includes:

[0056] On the base substrate formed with a pixel defining layer containing a plurality of pixel openings, a light-emitting functional layer is formed in the pixel openings by inkjet printing; wherein, as figure 1 As shown, at least one luminescent functional layer is made in the following manner: ...

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Abstract

The invention discloses an organic electroluminescent display panel, a manufacturing method thereof and a display device, and the method comprises the steps of enabling an ink solution to be printed to a pixel opening through a nozzle in a mode of introducing a stimuli-responsive gelator into the printed ink solution; applying certain external stimulus to drive the gelator, so that the ink solution in the pixel opening is in a gelatinized state, the ink solvent is prevented from volatilizing in advance, and the uniformity of ink drops in the pixel opening before the underlayer substrate is dried to form a film is kept. In the drying treatment process after printing is completed, due to the fixing effect of the gelator on the solute and the solvent, the Marangoni effect can be effectively inhibited, coffee rings and climbing phenomena formed in the solute drying process are prevented, the solute can be uniformly spread in the pixel openings to form a film, and the overall film forming uniformity of the whole panel in the light-emitting functional layers in the pixel openings is effectively improved, the printing defects are reduced, the pixels emit light uniformly after being lightened, the electric leakage phenomenon is reduced, and then the device performance is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an organic electroluminescence display panel, a manufacturing method thereof and a display device. Background technique [0002] At present, the efficiency and lifespan of organic electroluminescent display panels such as quantum dot light-emitting diodes produced by solution spin coating have been greatly developed. The inkjet printing technology can well realize the patterning process requirements of quantum dot light-emitting diodes used in the display field, and is expected to be applied to the manufacture of large-size full-color display panels. [0003] Inkjet printing of large-size display panels often takes a long time from the beginning to the end. This time is enough to cause the volatilization of the ink droplet solvent in the previous printing. At the same time, Marangoni effect and solute drying creep will appear during the drying process. The slope effect causes t...

Claims

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Application Information

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IPC IPC(8): H01L51/54H01L51/50H01L51/56H01L27/32
CPCH10K59/10H10K71/135H10K85/622H10K85/615H10K85/624H10K50/115
Inventor 王铁石
Owner BOE TECH GRP CO LTD
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