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:
Nov. 11, 2025
Filed:
Apr. 29, 2022
Beijing Boe Technology Development Co., Ltd., Beijing, CN;
Boe Technology Group Co., Ltd., Beijing, CN;
Xiaoyuan Zhang, Beijing, CN;
Beijing BOE Technology Development Co., Ltd., Beijing, CN;
Abstract
A light emitting device, including a first electrode, a first carrier transport layer, a light emitting layer, a second carrier transport layer, and a second electrode, in this order, where a rate of injecting first carriers into the light emitting layer by the first carrier transport layer is greater than a rate of injecting second carriers into the light emitting layer by the second carrier transport layer; the light emitting device further includes an interface layer on a side of the light emitting layer close to the second carrier transport layer; the interface layer includes a first material, which is capable of reacting with the first carriers under a preset condition, such that an energy level of the first material is changeable; and a transport rate of the first carriers in the interface layer is less than a transport rate of the first carriers in the first carrier transport layer.