Patent · US Active

Light-emitting device and display apparatus

US10305057B2 · kind B2 · utility

1Cited by

0References

18Claims

0Family size

Assignee

BOE Technology Group Co., Ltd. · CN

Inventors

Yuedi He · Beijing, CN
Yanzhao Li · Beijing, CN
Long Wang · Cupertino, US
Zhuo Chen · Beijing, CN

Key dates

Filing date	Nov 24, 2016
Grant date	May 28, 2019
Priority date	—
Expiry date	Nov 24, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH10K2102/351
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present disclosure provides a light-emitting device and manufacturing method thereof, and a display apparatus containing the light-emitting device. The light-emitting device comprises a quantum dot light-emitting layer, an electron transport layer, and an energy transfer layer. The quantum dot light-emitting layer comprises a quantum dot material. The energy transfer layer is between the quantum dot light-emitting layer and the electron transport layer. The energy transfer layer is configured to facilitate a transfer of energy from the electron transport layer to the quantum dot light-emitting layer such that the quantum dot light-emitting layer has an improved electroluminescence efficiency compared with the quantum dot light-emitting layer having an energy transferred directly from the electron transport layer without the energy transfer layer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.