| US 7,531,247 B2 | ||
| Organic electroluminescent device | ||
| Myung Seop Kim, Seoul (Korea, Republic of); Hyoung Yun Oh, Seoul (Korea, Republic of); Jae Man Lee, Seoul (Korea, Republic of); Sung Gap Kim, Anyang-si (Korea, Republic of); Jong Geun Yoon, Anyang-si (Korea, Republic of); Seong Joong Kim, Seoul (Korea, Republic of); Hong Gyu Kim, Uiwang-si (Korea, Republic of); and Joong Hwan Yang, Gwangmyeong-si (Korea, Republic of) | ||
| Assigned to LG Display Co., Ltd., Seoul (Korea, Republic of) | ||
| Filed on Jun. 01, 2005, as Appl. No. 11/140,736. | ||
| Claims priority of application No. 10-2004-0040425 (KR), filed on Jun. 03, 2004. | ||
| Prior Publication US 2005/0271898 A1, Dec. 08, 2005 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. H01L 35/24 (2006.01); C09K 11/08 (2006.01) | ||
| U.S. Cl. 428—690 [428/917; 313/504; 313/506; 257/40; 257/88; 257/89; 257/90; 257/100; 257/102; 257/103; 252/301.16; 252/301.35] | 16 Claims |
| 1. An organic electroluminescent (EL) device, comprising:
a substrate;
an anode formed on the substrate;
an interface deterioration preventing layer formed on the anode, and formed of a mixture of an organic material and an inorganic
material;
a hole injection layer on the interface deterioration preventing layer;
a hole transport layer on the hole injection layer;
a light emitting layer on the hole transport layer;
an electron transport layer on the light emitting layer;
an electron injection layer on the electron transport layer; and
a cathode on the electron injection layer,
wherein the organic material includes an aromatic amine compound having hole transmission properties, and the inorganic material
is one selected from a halide or an oxide of 1A, 2A, 3A and 4A-groups of the periodic table.
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