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:
Mar. 03, 2015
Filed:
Oct. 11, 2013
Samsung Display Co., Ltd., Yongin, Gyeonggi-Do, KR;
Il-Soo Oh, Yongin, KR;
Chang-Ho Lee, Yongin, KR;
Hee-Joo Ko, Yongin, KR;
Se-Jin Cho, Yongin, KR;
Hyung-Jun Song, Yongin, KR;
Jin-Young Yun, Yongin, KR;
Bo-Ra Lee, Yongin, KR;
Young-Woo Song, Yongin, KR;
Samsung Display Co., Ltd., , KR;
Abstract
Disclosed is an organic light emitting diode device including an anode, a cathode, an emission layer between the anode and the cathode, and a buffer layer positioned between the emission layer and the anode. The buffer layer includes an oxide, fluoride, quinolate, or acetoacetate compound of an alkaline metal or an alkaline-earth metal, as well as a material having a work function of about 2.6 to about 4.5 eV. The buffer layer also has a thickness of about 30 Å to about 400 Å.