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. 10, 2009
Filed:
Feb. 07, 2005
Hae-jung Son, Seoul, KR;
Tae-yong Noh, Gunpo-si, KR;
Sang-hoon Park, Seongnam-si, KR;
Lyong-sun Pu, Suwon-si, KR;
Das Rupasree Ragini, Suwon-si, KR;
Jong-hyoup Lee, Seoul, KR;
Eun-sil Han, Yongin-si, KR;
Young-hun Byun, Yongin-si, KR;
Seok Chang, Daejeon-si, KR;
Yi-yeol Lyu, Yongin-si, KR;
Hae-Jung Son, Seoul, KR;
Tae-Yong Noh, Gunpo-si, KR;
Sang-Hoon Park, Seongnam-si, KR;
Lyong-Sun Pu, Suwon-si, KR;
Das Rupasree Ragini, Suwon-si, KR;
Jong-Hyoup Lee, Seoul, KR;
Eun-Sil Han, Yongin-si, KR;
Young-Hun Byun, Yongin-si, KR;
Seok Chang, Daejeon-si, KR;
Yi-Yeol Lyu, Yongin-si, KR;
Sansung SDI Co., Ltd., Suwon-si, Gyeonggi-do, KR;
Abstract
An organic electroluminescent device having an emission layer, which is constructed with a host, a phosphorescence emission molecule as a dopant, and a fluorescence supporter. The fluorescence supporter receives energy from the host or traps energy directly, and then transfers the energy to the dopant or self-emits light. An emission spectrum of the fluorescence supporter and an absorption spectrum of the phosphorescence emission molecule overlap partly or completely. The organic electroluminescent device has improved luminous efficiency and color purity characteristics in comparison with a conventional organic electroluminescent device having an emission layer, which is composed of a phosphorescent dopant and a host. This system is useful in the manufacture of, in particular, blue emission devices.