Light emitting device including light coupling sub-layers having a stacked step structure, and manufacturing method thereof

US11404675B2 · kind B2 · utility

Assignees

• CHONGQING BOE DISPLAY TECHNOLOGY CO., LTD. · CN
• BOE Technology Group Co., Ltd. · CN

Inventors

• Can Huang · Beijing, CN
• Dawei Shi · Beijing, CN
• Weilin Lai · Beijing, CN
• Jiandong BAO · Beijing, CN
• Lu Yang · Beijing, CN
• Wentao Wang · Tallahassee, US
• Liji Cheng · Beijing, CN

Key dates

• Filing date: May 20, 2020
• Grant date: Aug 2, 2022
• Expiry date: Dec 8, 2040

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2102/351

Abstract

The present disclosure provides a light emitting device and a manufacturing method thereof, a display panel and a display apparatus. The light emitting device includes a substrate; a light emitting element on the substrate; and a light coupling layer on a light emitting side of the light emitting element, wherein a thickness of the light coupling layer gradually decreases in a direction from a central region of the light emitting device toward an edge region of the light emitting device.