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:
Jun. 02, 2020
Filed:
Apr. 19, 2018
Samsung Display Co., Ltd., Yongin-si, Gyeonggi-do, KR;
Sung Wook Kim, Hwaseong-si, KR;
Sung-Soo Bae, Seoul, KR;
Hye In Jeong, Suwon-si, KR;
Dong Hyun Kim, Seongnam-si, KR;
Seul Ong Kim, Hwaseong-si, KR;
Tsuyoshi Naijo, Suwon-si, KR;
Hwan Hee Cho, Hwaseong-si, KR;
Samsung Display Co., Ltd., Yongin-si, KR;
Abstract
An organic light emitting device includes: a first electrode; a second electrode that overlaps the first electrode; and an organic layer that is disposed between the first electrode and the second electrode, wherein the organic layer comprises a hole transport region that includes a hole transport material and a p-dopant, and wherein when a doping amount of the p-dopant doped to the hole transport region exceeds 1 wt %, the following Equation 1 is satisfied, while when the doping amount of the p-dopant is 1 wt % or less than 1 wt %, the following Equation 2 is satisfied:HOMO_HTM−LUMO_-dopant<−0.05 eV  [Equation 1]HOMO_HTM−LUMO_-dopant>−0.05 eV  [Equation 2]In Equation 1 and Equation 2, HOMO_HTM denotes HOMO energy of the hole transport material and LUMO_p-dopant denotes LUMO energy of the p-dopant.