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Display substrate, manufacturing method thereof, and display device

A technology for display substrates and substrate substrates, which is used in the manufacture of semiconductor/solid-state devices, diodes, organic semiconductor devices, etc., can solve the problems of poor wettability, difficulty in meeting process design, and large differences in different regions in the filter layer, etc. To achieve the effect of meeting the needs of process design

Active Publication Date: 2021-04-20
BOE TECH GRP CO LTD
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Problems solved by technology

[0004] However, due to the poor wettability of the ink on the surface of the pixel defining layer, the filter layer formed after drying and curing of the ink presents a structure that is thick in the middle and thin around the periphery, resulting in large gaps in different regions of the filter layer. , unable to provide a relatively flat surface for subsequent processes, it is difficult to meet the needs of process design

Method used

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  • Display substrate, manufacturing method thereof, and display device
  • Display substrate, manufacturing method thereof, and display device
  • Display substrate, manufacturing method thereof, and display device

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0038] Hereinafter, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the embodiments of the present application, unless otherwise specified, "plurality" means two...

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Abstract

The invention provides a display substrate, a preparation method thereof, and a display device, and relates to the field of display technology. The display substrate formed by the preparation method has a relatively flat surface. The preparation method includes the following steps: S1: sequentially forming a pixel defining layer and an auxiliary defining layer on a base substrate; the pixel defining layer has a plurality of first openings arranged at intervals, and the auxiliary defining layer has a plurality of second openings arranged at intervals part; S2: print ink in the first opening, and perform the first heat treatment on the ink to remove the solvent in the ink; the sum of the thicknesses of the pixel defining layer and the auxiliary defining layer is greater than the ink that gathers in the first opening after removing the solvent S3: performing at least a second heat treatment on the auxiliary defining layer, so that the auxiliary defining layer is melted to form a cover layer covering the ink; S4: performing cooling treatment on the cover layer, so that the cover layer is solidified. It is used for the preparation of a display substrate and a display device including the display substrate.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display substrate, a preparation method thereof, and a display device. Background technique [0002] A display substrate (such as a color filter substrate) generally includes: a pixel defining layer and sub-pixel regions separated by a plurality of openings on the pixel defining layer, and a filter layer is formed in each sub-pixel region. [0003] In the prior art, a preparation method of the filter layer is: printing ink in each sub-pixel area by inkjet printing, and drying and curing the ink to form the above filter layer. [0004] However, due to the poor wettability of the ink on the surface of the pixel defining layer, the filter layer formed after drying and curing of the ink presents a structure that is thick in the middle and thin around the periphery, resulting in large gaps in different regions of the filter layer. , unable to provide a relatively flat surface for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/56H01L27/32
CPCH10K59/38H10K2102/331H10K71/40
Inventor 靳倩黄维田禹王小芬隋凯董超刘晓云
Owner BOE TECH GRP CO LTD
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