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Manufacturing method of organic electroluminescent substrate

A manufacturing method and electroluminescence technology, which are applied to circuits, electrical components, electrical solid devices, etc., can solve the problems of inconsistent film layer morphology and thickness, affecting the display effect of display devices, etc., and achieve the effect of improving uniformity.

Active Publication Date: 2019-11-05
BOE TECH GRP CO LTD
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Problems solved by technology

At present, when inkjet printing is performed, due to the inconsistent solvent atmosphere in the central area of ​​the display area and the edge area, it often occurs that the morphology and thickness of the film layer formed in the pixels in the central area of ​​​​the display area and the edge area are inconsistent, thus affecting The display effect of the display device

Method used

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  • Manufacturing method of organic electroluminescent substrate
  • Manufacturing method of organic electroluminescent substrate
  • Manufacturing method of organic electroluminescent substrate

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Embodiment Construction

[0041] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0042] When inkjet printing is performed, the solvent atmosphere at the edge of the printing area is thinner, and the solvent atmosphere in the middle of the printing area is thicker. However, in the prior art, when inkjet printing is performed, the inkjet printing area does not exceed the display area, or exceeds the display area. This will lead to a large difference between the solvent atmosphere at the edge of the display area and the solvent atmosphere in the middle of the display area, resulting in the film layer formed in the pixels in the middle of the display area and the film layer formed in the pixels at the edge of the display area The thickness and p...

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Abstract

The present invention provides a method for manufacturing an organic electroluminescent substrate, comprising: providing a substrate, the substrate comprising a display area and a non-display area; and printing ink on the substrate by means of inkjet printing, wherein the inkjet The printed area completely covers the substrate. The present invention can improve the uniformity of the film thickness formed in the display area.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescent display, in particular to a method for manufacturing an organic electroluminescent substrate. Background technique [0002] In organic electroluminescent substrates, the film-forming methods of luminescent film mainly include inkjet printing, nozzle coating, spin coating, screen printing, etc. Among them, inkjet printing technology can realize large-scale printing due to its high material utilization rate. , is considered an important way to achieve mass production. At present, when inkjet printing is performed, due to the inconsistent solvent atmosphere in the central area of ​​the display area and the edge area, it often occurs that the morphology and thickness of the film layer formed in the pixels in the central area of ​​​​the display area and the edge area are inconsistent, thus affecting The display effect of the display device. Contents of the invention [0003] The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/56H10K99/00
CPCH10K71/00H10K71/135H10K59/8723H10K59/122H10K59/173H10K71/40H10K50/11H10K50/8428
Inventor 宋莹莹
Owner BOE TECH GRP CO LTD
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