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:
Oct. 22, 2013
Filed:
Feb. 22, 2006
Myung Seop Kim, Seoul, KR;
Jeong Dae Seo, Gwacheon-si, KR;
Jac Man Lee, Seoul, KR;
Kyung Hoon Lee, Seoul, KR;
Chang Je Sung, Seoul, KR;
Sang Tac Park, Gyeonggi-do, KR;
Eun Soo Cha, Gwacheon-si, KR;
Myung Seop Kim, Seoul, KR;
Jeong Dae Seo, Gwacheon-si, KR;
Jac Man Lee, Seoul, KR;
Kyung Hoon Lee, Seoul, KR;
Chang Je Sung, Seoul, KR;
Sang Tac Park, Gyeonggi-do, KR;
Eun Soo Cha, Gwacheon-si, KR;
LG Display Co., Ltd., Seoul, KR;
Abstract
An organic electroluminescent (EL) device is provided which uses an electron-transport layer including hole blocking capability. The device includes a stack structure, with an emitting layer and an electron-transport layer provided between an anode and a cathode. The electron-transport layer is a mixture of at least two materials. This mixture may include an organic compound and one or more other organic compounds, or may include a metal or inorganic compound and one or more other metal or inorganic compounds, or may include one or more organic compounds and one or more metal or inorganic compounds. By incorporating a hole blocking capability into the electron-transport layer, structure and fabrication of the device is simplified and efficiency is increased.