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:
May. 12, 2026
Filed:
Aug. 25, 2022
Samsung Electronics Co., Ltd., Suwon-si, KR;
Yuho Won, Seoul, KR;
Sung Woo Kim, Hwaseong-si, KR;
Eun Joo Jang, Suwon-si, KR;
Hyo Sook Jang, Suwon-si, KR;
SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-Do, KR;
SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do, KR;
Abstract
An electroluminescent device includes a first electrode; a second electrode spaced apart from the first electrode; and a light emitting layer disposed between the first electrode and the second electrode, the light emitting layer includes semiconductor nanoparticles, wherein the semiconductor nanoparticles do not include cadmium, the semiconductor nanoparticles have a core shell structure, the semiconductor nanoparticles include zinc, selenium, tellurium, and sulfur, wherein in a two dimensional image obtained by an electron microscopy analysis, the semiconductor nanoparticles show an average value of a circularity defined by the following equation of greater than or equal to about 0.8 and less than or equal to about 1: