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. 03, 2026
Filed:
Oct. 02, 2023
Lg Display Co., Ltd., Seoul, KR;
Dong Ik Lee, Paju-si, KR;
Jin Hwan Park, Paju-si, KR;
Ji Yun Kim, Paju-si, KR;
Dong Hyuk Kim, Paju-si, KR;
Yong Hwan Kim, Paju-si, KR;
LG DISPLAY CO., LTD., Seoul, KR;
Abstract
A light emitting device includes a first electrode and a second electrode facing each other on a substrate, and an intermediate layer including a first blue stack, a first charge generation layer, and a phosphorescent stack between the first electrode and the second electrode. The first blue stack includes a hole transport layer, a first blue light-emitting layer, a second blue light-emitting layer, and an electron transport layer in this order. Further, the first blue light-emitting layer includes a first host and a blue dopant, and the second blue light-emitting layer includes a second host and the blue dopant. Also, a triplet energy level of the first host is greater than a triplet energy level of the second host and is smaller than a triplet energy level of the dopant.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile