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:
Jul. 10, 2001
Filed:
Jul. 29, 1998
Hyang Mok Lee, Seoul, KR;
Kang Hoon Choi, Daejon, KR;
Do Hoon Hwang, Daejon, KR;
Lee Mi Do, Daejon, KR;
Taehyoung Zyung, Daejon, KR;
Abstract
The present invention relates to an electroluminescent device, which is characterized in that it uses polymer made of ionomer containing metal ions as a charge transport layer. The ionomer contains an ionized metallic salt and the polymer forms a physical cross-linking around the metal. Thus, it has not only a good mechanical property but also a superior thermal stability. Also it shows an ion conductivity due to movement of ion under electric field, and the conductivity can be controlled by varying the concentration of the substituted ion. The ionomer layer can be easily obtained by spin coating method. In addition, the light-emittive quantum efficiency can be greatly increased by inserting the ionomer layer between the electrode and the light-emitting layer to form a stabilized interface. On the other hand, it can be applied to manufacturing of the flexible electroluminescent device because the ionomer is also a polymer.