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:
Apr. 14, 2026
Filed:
Aug. 26, 2022
Samsung Display Co., Ltd., Yongin-si, KR;
Jongwon Lee, Seongnam-si, KR;
Daehyeon Kim, Anyang-si, KR;
Seung Cheol Kim, Seoul, KR;
Heungsu Park, Anyang-si, KR;
Chang-Min Lee, Suwon-si, KR;
Hyunshik Lee, Seoul, KR;
Samsung Display Co., Ltd., Yongin-si, KR;
Abstract
Provided is a light emitting device including a first electrode, a hole transport region on the first electrode, a first light emitting layer on the hole transport region and configured to emit light of a first wavelength, a second light emitting layer on the hole transport region and configured to emit light of a second wavelength different from the first wavelength, an electron transport region including an electron transport layer on the first light emitting layer and the second light emitting layer, and an electron injection layer on the electron transport layer, and a second electrode on the electron transport region, wherein the electron injection layer includes magnesium (Mg) and ytterbium (Yb).