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:
Feb. 20, 2024
Filed:
Sep. 03, 2021
Applicant:
Lg Display Co., Ltd., Seoul, KR;
Inventors:
Changeun Kim, Seoul, KR;
Sujeong Lee, Seoul, KR;
Assignee:
LG Display Co., Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 51/52 (2006.01); H10K 50/11 (2023.01); H10K 50/814 (2023.01); H10K 50/824 (2023.01); H10K 59/12 (2023.01); H10K 102/10 (2023.01);
U.S. Cl.
CPC ...
H10K 50/11 (2023.02); H10K 50/814 (2023.02); H10K 50/824 (2023.02); H10K 59/12 (2023.02); H10K 2102/102 (2023.02); H10K 2102/103 (2023.02);
Abstract
An organic light-emitting device an improved anode structure and an organic electroluminescent display device using the same are provided. The anode structure has a 3 layers stack structure in which a layer closest to an organic light-emissive layer of the organic light-emitting device is made of a material with a high work function such as 5.1 to 5.3 eV. Thus, hole injection efficiency is improved and occurrence of dark spots is suppressed.