| US 7,501,188 B2 | ||
| Organic electroluminescent device | ||
| Hae-Jung Son, Seoul (Korea, Republic of); Tae-Yong Noh, Gunpo-si (Korea, Republic of); Sang-Hoon Park, Seongnam-si (Korea, Republic of); Lyong-Sun Pu, Suwon-si (Korea, Republic of); Das Rupasree Ragini, Suwon-si (Korea, Republic of); Jong-Hyoup Lee, Seoul (Korea, Republic of); Eun-Sil Han, Yongin-si (Korea, Republic of); Young-Hun Byun, Yongin-si (Korea, Republic of); Seok Chang, Daejeon-si (Korea, Republic of); and Yi-Yeol Lyu, Yongin-si (Korea, Republic of) | ||
| Assigned to Sansung SDI Co., Ltd., Suwon-si, Gyeonggi-do (Korea, Republic of) | ||
| Filed on Feb. 07, 2005, as Appl. No. 11/51,480. | ||
| Claims priority of application No. 10-2004-0008922 (KR), filed on Feb. 11, 2004. | ||
| Prior Publication US 2005/0196638 A1, Sep. 08, 2005 | ||
| Int. Cl. H01L 51/50 (2006.01) | ||
| U.S. Cl. 428—690 [428/917; 313/504; 313/506] | 19 Claims |
| 1. An organic electroluminescent device, comprising:
a pair of electrodes; and
an emission layer formed between the pair of electrodes, the emission layer comprising:
a host;
a phosphorescence emission molecule as a dopant; and
a fluorescence supporter receiving energy from the host or trapping energy, the fluorescence support transferring the energy
to the phosphorescence emission molecule or self-emitting light, an energy band gap between a ground state and a singlet state
of the fluorescence supporter being equal to or greater than an energy band gap between a ground state and a triplet state
of the phosphorescence emission molecule.
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