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.:
Date of Patent:
Oct. 21, 2025
Filed:
Sep. 27, 2022
Tcl Technology Group Corporation, Guangdong, CN;
Tianshuo Zhang, Guangdong, CN;
TCL TECHNOLOGY GROUP CORPORATION, Huizhou, CN;
Abstract
A light-emitting diode and a preparation method of the light-emitting diode are provided in the present application. The light-emitting diode includes an anode and a cathode which are arranged opposite to each other, a luminescent layer arranged between the anode and the cathode, an electron transport layer arranged between the cathode and the luminescent layer, and a composite film arranged between the cathode and the electron transport layer. Where the composite film includes an aluminum oxide film arranged adjacent to the electron transport layer, and a nano metal oxide film or a silicon nitride film arranged away from the electron transport layer. The light-emitting diode according to the present application may block water and oxygen from infiltrating into it effectively, so that a poor stability of the light-emitting diode device in a water-oxygen environment is improved.