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. 13, 2021
Filed:
Mar. 29, 2017
Samsung Display Co., Ltd, Yongin-si, KR;
Dongchan Kim, Yongin-si, KR;
Dongkyu Seo, Yongin-si, KR;
Byoungduk Lee, Yongin-si, KR;
Yoonhyeung Cho, Yongin-si, KR;
Yongchan Ju, Yongin-si, KR;
Wonsuk Han, Yongin-si, KR;
SAMSUNG DISPLAY CO., LTD., Yongin-si, KR;
Abstract
A light-emitting device is provided. The device includes a first electrode, a second electrode, an emission layer between the first electrode and the second electrode, a hole transport region between the first electrode and the emission layer, and an electron transport region between the emission layer and the second electrode. The hole transport region may include a hole transport layer, which in turn includes a first perovskite compound [A][B][X]with a neutral defect. A hole concentration of the first perovskite compound may be from about 1.0×10to about 9×10cmat about 25° C.