Organic light-emitting diode display substrate with a protection layer and manufacturing method thereof, and display device

US11335883B2 · kind B2 · utility

Assignee

• BOE Technology Group Co., Ltd. · CN

Inventors

• Hongwei Tian · Beijing, CN
• Yanan Niu · Beijing, CN
• Chunyan Xie · Beijing, CN
• Chunyang Wang · Hefei, CN
• Dong Li · Beijing, CN
• Zheng Liu · Beacon Falls, US
• Ming Liu · Nanjing, CN

Key dates

• Filing date: Dec 4, 2019
• Grant date: May 17, 2022
• Expiry date: Jan 17, 2040

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K59/65

Abstract

The present disclosure provides an organic light-emitting diode display substrate and a manufacturing method thereof. The manufacturing method includes: sequentially forming a first electrode, a light-emitting layer and a second electrode on a base substrate; forming a protection layer having a first opening on a side of the second electrode distal to the base substrate; and forming a second opening in the second electrode, the second opening being located below the first opening. In the present disclosure, with the protection layer, only a portion of the second electrode below the first opening is removed, so that other portions of the second electrode are prevented from being damaged, thereby eliminating a poor display of the display device.