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:
Feb. 21, 2012
Filed:
Jun. 18, 2008
Jung-bae Song, Yongin-si, KR;
Sung-hun Lee, Yongin-si, KR;
Sang-yeol Kim, Yongin-si, KR;
Mu-gyeom Kim, Yongin-si, KR;
Jung-Bae Song, Yongin-si, KR;
Sung-Hun Lee, Yongin-si, KR;
Sang-Yeol Kim, Yongin-si, KR;
Mu-Gyeom Kim, Yongin-si, KR;
Samsung Electronics Co., Ltd., Yeongtong-gu, Suwon-si, Gyeonggi-do, KR;
Samsung Mobile Display Co., Ltd., Giheung-Gu, Yongin, Gyunggi-Do, KR;
Abstract
A white Organic Light Emitting Device (OLED) includes: an anode and cathode spaced apart from each other; first, second, and third light emitting layers sequentially stacked between the anode and the cathode; and an electron injection induction layer, arranged between the second light emitting layer and the third light emitting layer, to induce the electron to flow into the second light emitting layer from the third light emitting layer. A difference between a Lowest Occupied Molecular Orbital (LUMO) energy level of the electron injection induction layer and the LUMO energy level of a dopant existing in the second light emitting layer is 0.4 eV or below.