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:
Sep. 27, 2022
Samsung Electronics Co., Ltd., Suwon-si, KR;
Yuho Won, Suwon-si, KR;
Jeong Hee Lee, Suwon-si, KR;
Eun Joo Jang, Suwon-si, KR;
Hyo Sook Jang, Suwon-si, KR;
Seonmyeong Choi, Suwon-si, KR;
SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do, KR;
SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-Do, KR;
Abstract
An electroluminescent device includes a first electrode and a second electrode spaced apart from each other, and a light emitting layer including semiconductor nanoparticles. The semiconductor nanoparticles do not contain cadmium, the semiconductor nanoparticles include zinc, selenium, tellurium, and sulfur, the semiconductor nanoparticles have a core-shell structure including a core including a first semiconductor nanocrystal and a shell disposed on the core, the first semiconductor nanocrystals include a first zinc chalcogenide containing sulfur, in the semiconductor nanoparticles, a mole ratio of sulfur to tellurium is greater than or equal to about 0.5:1 and less than or equal to about 110:1, and the semiconductor nanoparticles are configured to emit light having a maximum emission peak wavelength of greater than or equal to about 440 nanometers (nm) and less than or equal to about 580 nm, and the semiconductor nanoparticles have a quantum yield of greater than or equal to about 40%.