Display panel, display device and preparation method of display panel

CN119744576APending Publication Date: 2025-04-01HEFEI VISIONOX TECH CO LTD
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Patent Information

Application Number
CN202480001395.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-07-31
Filing Date
2024-06-11
Publication Date
2025-04-01

AI Technical Summary

Technical Problem

The existing display panel has low reliability and is prone to display failure. It is mainly due to the segment difference between the packaging structure of the light emitting structure and the isolation structure, which causes the cathode region to be completely covered, thereby damaging the packaging structure.

Method used

A display panel is designed, including a substrate, an isolation structure, a light emitting functional layer and a packaging layer. The isolation structure encloses a plurality of openings, and the light emitting structure is arranged in these openings, and the packaging part overlaps with the isolation structure and extends to the side where the isolation structure is facing away from the substrate, forming a gap to protect the light emitting structure.

Benefits of technology

Through this design, each light emitting structure can be formed in a sequence from thin to thick when molding the display panel, so as to avoid the luminous structure required for the next thickness damage to the packaging part of the previous thickness during patterning, reduce the probability of display failure, and improve the The reliability of the display panel.

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Abstract

The invention relates to a display panel, a display device and a preparation method of the display panel. The display panel comprises a substrate; a plurality of openings are defined by the isolation structure, the light-emitting functional layer is arranged on the substrate and comprises a first light-emitting structure arranged in the first opening and a second light-emitting structure arranged in the second opening, and the thickness of the second light-emitting structure is larger than that of the first light-emitting structure in the thickness direction; the isolation structure comprises a first part and a second part which are sequentially arranged in the direction away from the substrate, the orthographic projection of the first part on the substrate is located in the orthographic projection of the second part on the substrate, and the length of the side, facing the first opening, of the second part protruding out of the first part is L1. The length of the side, facing the second opening, of the second part protruding out of the first part is L2, and L1 is smaller than L2. The reliability of the display panel can be improved.
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