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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 12402469 B1

PDFFull Text
Date of Patent:
Aug. 26, 2025

Filed:

Sep. 26, 2022

Light-emitting device and preparation method thereof

Applicant:

Tcl Technology Group Corporation, Huizhou, CN;

Inventors:

Yinjie Song, Huizhou, CN;

Jianxin Zhang, Huizhou, CN;

Yixing Yang, Huizhou, CN;

Assignee:

TCL TECHNOLOGY GROUP CORPORATION, Huizhou, CN;

Attorney:

ANOVA LAW GROUP, PLLC

Primary Examiner:

Anthony Ho

Int. Cl.
CPC ...
H10K 50/115 (2023.01); H10K 30/80 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 50/17 (2023.01); H10K 71/00 (2023.01); H10K 71/15 (2023.01); H10K 50/00 (2023.01); H10K 71/40 (2023.01); H10K 102/00 (2023.01);
U.S. Cl.
CPC ...
H10K 50/115 (2023.02); H10K 30/865 (2023.02); H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 50/171 (2023.02); H10K 71/00 (2023.02); H10K 71/15 (2023.02); H10K 50/00 (2023.02); H10K 71/441 (2023.02); H10K 2102/351 (2023.02);
Abstract

A preparation method of a light-emitting device includes forming a composite transition layer between a cathode and a quantum dot light-emitting layer and forming an anode on a surface of the quantum dot light-emitting layer away from the cathode. The composite transition layer includes a first transition layer, a second transition layer, and a third transition layer. The first transition layer is arranged on one side close to the cathode and includes a metal halide. The second transition layer is arranged on a surface of the first transition layer away from the cathode and includes a hydrogen halide. The third transition layer is arranged on a surface of the second transition layer away from the first transition layer and includes an ester compound.

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