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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12389738 B1

PDFFull Text
Date of Patent:
Aug. 12, 2025

Filed:

Jan. 09, 2021

Oled device, display apparatus and manufacturing method therefor

Applicant:

Boe Technology Group Co., Ltd., Beijing, CN;

Inventors:

Lei Chen, Beijing, CN;

Congcong Jia, Beijing, CN;

Assignee:

BOE TECHNOLOGY GROUP CO., LTD., Beijing, CN;

Attorney:

XSENSUS LLP

Primary Examiner:

Gregory D Clark

Int. Cl.
CPC ...
H01L 51/50 (2006.01); H10K 50/11 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 50/17 (2023.01); H10K 50/18 (2023.01); H10K 71/00 (2023.01); H10K 59/12 (2023.01); H10K 101/40 (2023.01);
U.S. Cl.
CPC ...
H10K 50/11 (2023.02); H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 50/171 (2023.02); H10K 50/18 (2023.02); H10K 50/181 (2023.02); H10K 71/00 (2023.02); H10K 59/12 (2023.02); H10K 2101/40 (2023.02);
Abstract

An organic light-emitting diode (OLED) device includes a first electrode, a light-emitting layer, an electron blocking layer and a second electrode. A material of the light-emitting layer includes a host material and a trap material. A lowest unoccupied molecular orbital energy level of the trap material is lower than a lowest unoccupied molecular orbital energy level of the host material, a highest occupied molecular orbital energy level of the trap type material is not higher than a highest occupied molecular orbital energy level of the host material, and the lowest unoccupied molecular orbital energy level of the trap material is lower than a lowest unoccupied molecular orbital energy level of the electron blocking layer. The first electrode, the light-emitting layer, the electron blocking layer and the second electrode are stacked in sequence.

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