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. 06, 2022
Filed:
Oct. 07, 2019
Samsung Display Co., Ltd., Yongin-Si, KR;
Samsung Display Co., Ltd., Yongin-si, KR;
Abstract
An organic electroluminescence device includes a first electrode, a hole transport region disposed on the first electrode, a first emission layer disposed on the hole transport region and including a first light-emitting host and a first light-emitting dopant, a second emission layer disposed on the first emission layer and including a first electron transport material and a second light-emitting dopant, an electron transport region disposed on the second emission layer and including a second electron transport material, and a second electrode disposed on the electron transport region, wherein a triplet energy of the first light-emitting host (T1), a triplet energy of the second light-emitting dopant (T1) and a triplet energy of the second electron transport material (T1) satisfy a relation of T1<T1<T1. High emission efficiency may be shown.