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:
Aug. 23, 2022
Filed:
Oct. 02, 2020
Samsung Electronics Co., Ltd., Suwon-si, KR;
Sujin Park, Seoul, KR;
Yuho Won, Seoul, KR;
Eun Joo Jang, Suwon-si, KR;
Dae Young Chung, Suwon-si, KR;
Sung Woo Kim, Hwaseong-si, KR;
Jin A Kim, Suwon-si, KR;
Yong Seok Han, Anyang-si, KR;
SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-Do, KR;
Abstract
An electroluminescent device includes a first electrode and a second electrode facing each other; a hole transport layer between the first electrode and the second electrode; a light emitting layer including a first light emitting layer disposed between the hole transport layer and the second electrode and including a first quantum dot and a second light emitting layer between the first light emitting layer and the second electrode and including a second quantum dot; and an electron transport layer between the light emitting layer and the second electrode. Each of the first and second light emitting layers emits first light, each of the first and second quantum dots has a core-shell structure including one or more shells, and the first and second quantum dots have different numbers of shells from each other or have different total thicknesses of the one or more shells from each other.