Substrate with pixel structure, optoelectronic device containing same and printing method

Abstract

The application provides a substrate with a pixel structure, an optoelectronic device containing the same and a printing method. The pixel structure in the substrate with the pixel structure includes a pixel unit with sub-pixels, each sub-pixel includes a pixel isolation area and a light-emitting area, the light-emitting area is the area where the pixel isolation structure in the pixel isolation area and the depression surrounded by the substrate are located, and the depression It is used to contain the liquid material ejected by the inkjet printing device. The shape of the bottom surface of the depression is the first plane figure S1, the area of ​​1≤S2 / the area of ​​S1≤1.5, and S2 and S1 have an intersection, the intersection is S1, and S2 is The inkjet printing device prints the ejected liquid material once at a specific height from the test substrate, and forms a second plane figure after drying on the flat surface of the test substrate. The test substrate is a conductive substrate without a pixel isolation layer structure . The present application achieves the effect of improving the uniformity of the film layer in the light-emitting region and the uniformity of light emission of the light-emitting device.

Description

technical field [0001] The present application relates to the technical field of pixel design, in particular, to a substrate with a pixel structure, an optoelectronic device containing it, and a printing method. Background technique [0002] In recent years, the solution method has gradually replaced the traditional evaporation method and has become a research hotspot in the manufacture of electroluminescent devices. The process of manufacturing electroluminescent devices mainly includes setting corresponding functional inks into corresponding pixels. Generally, pixels include pixel defining layers and The light-emitting area, the light-emitting area is a pit surrounded by the pixel defining layer and the substrate. The pit is used to hold ink. After the ink is dried, each film layer (each functional layer and light-emitting layer) is formed. Each film layer and the upper and lower electrodes form a light-emitting area. device. [0003] Among the solution methods, inkjet pr...

AI Technical Summary

Problems solved by technology

[0006] The main purpose of this application is to provide a substrate with a pixel structure, an optoelectronic device containing it, and a printing method to solve the problem that the light-emitting device prepared by the existing inkjet printing method is prone to uneven film layers

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