Method for manufacturing display backplane, display backplane, and display device

US11805671B2 · kind B2 · utility

Assignee

• BOE Technology Group Co., Ltd. · CN

Inventors

• Jing Wang · Beijing, CN
• Hongwei Tian · Beijing, CN
• Ming Liu · Nanjing, CN
• Ziang Han · Beijing, CN
• Zunqing Song · Beijing, CN

Key dates

• Filing date: Jun 23, 2021
• Grant date: Oct 31, 2023
• Expiry date: Jan 19, 2042

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/549

Abstract

A method for manufacturing a display backplane, a display backplate, and a display device are disclosed. The method includes: forming a planarization layer on one side of a substrate inside a pixel region, a partition region, and a perforation region; forming at least one girdle of annular passivation layer disposed around the perforation region on a surface, away from the substrate, of the planarization layer inside a portion of the partition layer; removing a portion of the planarization layer, inside the partition region, uncovered by the annular passivation layer and the planarization layer, inside the partition region, partially covered by the annular passivation layer, to obtain at least one girdle of annular isolation columns disposed between the substrate and the annular passivation layer and around the perforation region; and forming organic light-emitting elements on one side of the planarization layer away from the substrate to obtain the display backplane.