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. 19, 2020
Filed:
May. 24, 2019
Samsung Display Co., Ltd., Yongin-si, Gyeonggi-Do, KR;
Seok Gyu Yoon, Seoul, KR;
Dong Chan Kim, Hwaseong-si, KR;
Eung Do Kim, Seoul, KR;
Bo Ra Jung, Seongnam-si, KR;
Kyu Hwan Hwang, Yongin-si, KR;
Sung Chul Kim, Seongnam-si, KR;
Won-Jong Kim, Suwon-si, KR;
Young-Woo Song, Suwon-si, KR;
Jong Hyuk Lee, Seoul, KR;
Samsung Display Co., Ltd., Yongin-si, KR;
Abstract
An organic light emitting diode includes: a first electrode; a second electrode facing the first electrode; a light emission layer between the first electrode and the second electrode; an electron injection layer between the second electrode and the light emission layer; and a buffer layer between the electron injection layer and the second electrode, where the electron injection layer includes a dipolar material and a first metal, and the buffer layer includes a metal having a work function of 4.0 eV or less.