Light-emitting substrate and manufacturing method therefor, and display panel

By using a multi-layer conductive layer structure and step design, the problem of poor contact between the anode and the underlying signal line was solved, resulting in better conductivity and higher fabrication yield.

WO2026113697A1PCT designated stage Publication Date: 2026-06-04BOE TECHNOLOGY GROUP CO LTD +1
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
BOE TECHNOLOGY GROUP CO LTD
Filing Date
2025-10-14
Publication Date
2026-06-04

AI Technical Summary

Technical Problem

In the display substrate, during the electrical connection between the anode and the underlying signal lines, the signal lines are prone to corrosion, leading to poor contact, forming dark spots, which affects the display effect. Furthermore, the manufacturing process is complex and the yield is low.

Method used

A multi-layer conductive layer structure is adopted. The first conductive layer is used to connect the anode of the light-emitting sub-unit, and the second conductive layer is used to connect the body and cathode of the signal line. By setting a step difference, the light-emitting functional layer is naturally disconnected at the connection point, which simplifies the manufacturing process and improves the conductivity connection.

Benefits of technology

It improves the conductivity of the light-emitting substrate, simplifies the fabrication process, reduces costs, and increases yield.

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Abstract

The present application relates to the technical field of display, and provides a light-emitting substrate and a manufacturing method therefor, and a display panel. The light-emitting substrate comprises a substrate, light-emitting units, and first signal lines; the first signal line comprises a body and a first connecting portion; the first connecting portion is configured to be electrically connected to a cathode; the light-emitting unit comprises a plurality of light-emitting sub-units; both the light-emitting sub-unit and the first signal line comprise a first conductive layer, the part of the first conductive layer located in the light-emitting sub-unit comprises a first conductive pattern, and the first conductive pattern is configured to be electrically connected to an anode of the light-emitting sub-unit; the part of the first conductive layer located in the first connecting portion comprises a second conductive pattern, and the second conductive pattern is configured to electrically connect the body of the first signal line and the cathode of the light-emitting sub-unit; the cathode is located on the side of the anode away from the first conductive layer; and the number of sublayers comprised in the second conductive pattern is less than the number of sublayers comprised in the first conductive pattern. The light-emitting substrate involves a simple manufacturing process and has high reliability.
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