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:
Sep. 22, 2026
Filed:
Oct. 28, 2022
Beijing Boe Technology Development Co., Ltd., Beijing, CN;
Boe Technology Group Co., Ltd., Beijing, CN;
Dong Li, Beijing, CN;
BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD., Beijing, CN;
BOE TECHNOLOGY GROUP CO., LTD, Beijing, CN;
Abstract
A light-emitting device and a method for manufacturing the same, and a display substrate are provided. The light-emitting device includes a first electrode, an electron transport layer, a light-emitting layer, a hole transport layer and a second electrode that are arranged sequentially. The electron transport layer includes at least one electron transport sub-layer, and in the at least one electron transport sub-layer, an electron transport sub-layer closest to the light-emitting layer is an electron transport sub-layer with a C-axis orientation. The C-axis orientation is a direction perpendicular to a plane where the light-emitting layer is located. In the electron transport sub-layer with the C-axis orientation, in the direction perpendicular to the plane where the light-emitting layer is located, a ratio of a number of crystal grains having no overlap with adjacent crystal grains to a total number of crystal grains is greater than 85%.