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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 12575255 B1

PDFFull Text
Date of Patent:
Mar. 10, 2026

Filed:

Aug. 05, 2021

Oled device and preparation method therefor, display substrate, and display apparatus

Applicant:

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

Inventors:

Zhiqiang Jiao, Beijing, CN;

Lilei Zhang, Beijing, CN;

Assignee:

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

Attorneys:

Ling Wu

Stephen Yang

Ling and Yang Intellectual Property

Primary Examiner:

Vu A Nguyen

Int. Cl.
CPC ...
H10K 50/16 (2023.01); H10K 50/11 (2023.01); H10K 50/13 (2023.01); H10K 50/15 (2023.01); H10K 50/165 (2023.01); H10K 50/17 (2023.01); H10K 59/80 (2023.01); H10K 101/30 (2023.01); H10K 101/40 (2023.01); H10K 102/00 (2023.01);
U.S. Cl.
CPC ...
H10K 50/167 (2023.02); H10K 50/11 (2023.02); H10K 50/13 (2023.02); H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 50/165 (2023.02); H10K 50/17 (2023.02); H10K 50/171 (2023.02); H10K 59/8051 (2023.02); H10K 59/80518 (2023.02); H10K 2101/30 (2023.02); H10K 2101/40 (2023.02); H10K 2102/351 (2023.02);
Abstract

An OLED device, including: an anode (), a cathode (), and a first light-emitting unit () located between the anode () and the cathode (). The first light-emitting unit () comprises a hole functional unit () and a light-emitting layer () that are sequentially stacked. The hole functional unit () is located between the anode () and the light-emitting layer (). The hole functional unit () comprises a first functional layer () for transporting electrons, a second functional layer () for injecting holes, and a third functional layer () for transporting holes, which are sequentially stacked. The first functional layer () comprises an electron transport material on which one or more among an active metal and an active metal compound is doped.

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