| US 7,485,377 B2 | ||
| Organic EL device | ||
| Myung Seop Kim, Seoul (Korea, Republic of); Hyung Yun Oh, Seoul (Korea, Republic of); Jae Woo Kyung, Seoul (Korea, Republic of); Sung Kab Kim, Seoul (Korea, Republic of); Jae Man Lee, Seoul (Korea, Republic of); Young Soo Han, Seoul (Korea, Republic of); Chun Gun Park, Seoul (Korea, Republic of); Jong Geun Yoon, Seoul (Korea, Republic of); and Sae Tae Park, Seoul (Korea, Republic of) | ||
| Assigned to LG Electronics Inc., Seoul (Korea, Republic of) | ||
| Filed on Sep. 26, 2007, as Appl. No. 11/861,595. | ||
| Application 11/861595 is a continuation of application No. 10/910341, filed on Aug. 04, 2004, granted, now 7,297,417. | ||
| Claims priority of application No. 10-2003-0056517 (KR), filed on Aug. 14, 2003. | ||
| Prior Publication US 2008/0014462 A1, Jan. 17, 2008 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. H01L 51/50 (2006.01) | ||
| U.S. Cl. 428—690 [428/917; 313/504; 313/506] | 12 Claims |
| 1. An organic EL device having an organic multilayer between a first electrode and a second electrode, the organic multilayer
comprising:
a hole injection layer formed of a mixture of at least one selected from organic materials and at least one selected from
inorganic materials, wherein the inorganic material is any one of fluorine compounds, wherein the mixture of the hole injection
layer has an organic material composition X value forming a gradient in a thickness direction, or an inorganic material composition
Y value forming a gradient in a thickness direction.
|