Light emitting device, display panel and device

By placing the anode layer between the pixel definition layer and the planarization layer in the light-emitting device and using conductive materials to electrically connect it to the thin-film transistor, the problems of slope climbing and breakage of the anode layer during the fabrication process are solved, achieving high pixel density and stable light-emitting performance.

CN122421601APending Publication Date: 2026-07-17BOE TECHNOLOGY GROUP CO LTD
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Patent Information

Application Number
CN202610578647.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-28
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Poor light emission performance of the light-emitting device, and the anode layer is prone to breakage due to ramping during the manufacturing process, which affects the display effect.

Method used

The anode layer is positioned between the pixel definition layer and the planarization layer, such that the orthographic projection of the pixel opening on the pixel definition layer onto the planarization layer at least partially overlaps with the orthographic projection of the anode layer onto the planarization layer, thus avoiding the anode layer being positioned within the pixel opening. The anode layer is electrically connected to the thin-film transistor via a conductive material, and a stacked anode layer structure is used to improve stability.

Benefits of technology

This achieves flatness and stability of the anode layer, reduces pixel space occupation, improves display effect, prevents anode layer breakage, and ensures the stability of luminous performance.

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Abstract

本发明公开一种发光器件、显示面板和装置,发光器件包括:基板,基板上设有薄膜晶体管;平坦层,平坦层覆盖薄膜晶体管;阳极层,阳极层设置于平坦层远离基板的一侧,阳极层与薄膜晶体管电连接;像素定义层,像素定义层设置于平坦层远离基板的一侧,阳极层设置于像素定义层与平坦层之间,像素定义层上的像素开口在平坦层上的正投影与阳极层在平坦层上的正投影至少部分重叠。在本发明的发光器件中,易实现阳极的平坦,不会影响出光,可以减少在像素定义层上对于像素空间的占用,易于实现高像素,有利于提高显示效果,阳极层未处于像素开口中,可以防止阳极层出现爬坡,有效防止阳极层出现断裂,保证阳极层的稳定性,使发光性能更加稳定。
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