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. 06, 2021
Samsung Electronics Co., Ltd., Suwon-si, KR;
Dae-Hee Lee, Hwaseong-si, KR;
Yeonkyung Lee, Seongnam-si, KR;
Tae Hyung Kim, Seoul, KR;
Heejae Lee, Seongnam-si, KR;
Eun Joo Jang, Suwon-si, KR;
Dae Young Chung, Suwon-si, KR;
Soonmin Cha, Suwon-si, KR;
SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-Do, KR;
SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do, KR;
Abstract
A quantum dot quantum dot device includes a first electrode and a second electrode, a light emitting layer disposed between the first electrode and the second electrode and including quantum dots, and a first hole auxiliary layer between the first electrode and the light emitting layer, wherein the first hole auxiliary layer includes a first hole auxiliary material and a second hole auxiliary material having a greater bandgap energy than a bandgap energy of the first hole auxiliary material, a difference between a HOMO energy level of the second hole auxiliary material and a HOMO energy level of the first hole auxiliary material is about 0.1 eV and less than about 0.8 eV, and a difference between a LUMO energy level of the second hole auxiliary material and a LUMO energy level of the first hole auxiliary material is greater than or equal to about 0.3 eV.