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. 23, 2017
Filed:
Dec. 24, 2014
Samsung Display Co., Ltd., Yongin, Gyeonggi-Do, KR;
SAMSUNG DISPLAY CO., LTD., Yongin, Gyeonggi-Do, KR;
Abstract
An organic electroluminescence (EL) device, including an anode; a cathode; and an emission layer between the anode and the cathode, the emission layer emitting a light via a singlet excited state, a stacking structure of at least three layers having different components being provided between the anode and the emission layer, wherein the stacking structure includes: a first layer including an electron accepting compound having a lowest unoccupied molecular orbital (LUMO) level of about −9.0 eV to about −4.0 eV; a second layer including a compound represented by the following Formula (1), the second layer being closer to the emission layer than the first layer; and a third layer including a compound represented by the following Formula (2), the third layer being closer to the emission layer than the second layer, wherein the emission layer includes a compound represented by the following Formula (3).