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:
Nov. 10, 2015
Filed:
Jul. 17, 2014
Samsung Display Co., Ltd., Yongin, Gyeonggi-do, KR;
Sun-Hye Lee, Suwon-si, KR;
Jae-Bok Kim, Hwaseong-si, KR;
Won-Jun Song, Hwaseong-si, KR;
Myung-Hwan Kim, Seongnam-si, KR;
Ji-Young Kim, Seoul, KR;
Hye-Lim Shin, Suwon-si, KR;
Tae-Kyu Shim, Seoul, KR;
Yoon-Kyoo Lee, Seoul, KR;
Samsung Display Co., Ltd., Yongin-si, KR;
Abstract
An organic light emitting device including: a first electrode, a hole injection layer on the first electrode, a hole transport layer on the hole injection layer, an organic light emitting layer on the hole transport layer, a first electron transport layer on the organic light emitting layer, a second electron transport layer on the organic light emitting layer, an electron injection layer on the second electron transport layer and a second electrode on the electron injection layer, where the first electron transport layer includes a first material for improving a thermal stability, a second material for improving a luminous efficiency and a third material for reducing a driving voltage, and the second electron transport layer is laminated with the first electron transport layer, and the second electrode faces the first electrode.