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. 27, 2012
Filed:
Mar. 21, 2008
Soon-ryong Park, Suwon-si, KR;
Il-soo Park, Suwon-si, KR;
Jun-sik OH, Suwon-si, KR;
Dae-yup Shin, Suwon-si, KR;
Mu-hyun Kim, Suwon-si, KR;
Won-jun Song, Suwon-si, KR;
Seung-wook Chang, Suwon-si, KR;
Yeun-joo Sung, Suwon-si, KR;
Soon-Ryong Park, Suwon-si, KR;
Il-Soo Park, Suwon-si, KR;
Jun-Sik Oh, Suwon-si, KR;
Dae-Yup Shin, Suwon-si, KR;
Mu-Hyun Kim, Suwon-si, KR;
Won-Jun Song, Suwon-si, KR;
Seung-Wook Chang, Suwon-si, KR;
Yeun-Joo Sung, Suwon-si, KR;
Samsung Display Co., Ltd., Yongin, Gyeonggi-Do, KR;
Abstract
An organic light emitting diode (OLED) may include a first electrode, a hole injection layer on the first electrode, an emission layer on the hole injection layer, an electron injection layer on the emission layer, and a second electrode on the electron injection layer, wherein an absolute value of a difference between a work function of the first electrode and a work function of the second electrode is less than 0.5 eV, and at least one of the hole injection layer and the electron injection layer is a multilayer.