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. 26, 2004
Filed:
May. 30, 2001
Yukihiko Shirakawa, Chuo-ku, JP;
TDK Corporation, Tokyo, JP;
Abstract
The invention has for its object to provide, without incurring any cost increase, a thin-film EL device in which a dielectric layer is corrected for non-flat portions to have a smooth surface, thereby ensuring enhanced display quality, and its fabrication process. This object is achieved by the provision of a thin-film EL device having at least a structure comprising an electrically insulating substrate ( ), a lower electrode layer ( ) stacked on the substrate according to a given pattern, a multilayer dielectric layer ( ) formed thereon by repeating a solution coating-and-firing step plural times, and a light-emitting layer ( ), a thin-film insulator layer ( ) and a transparent electrode layer ( ) stacked on the dielectric layer. The multilayer dielectric layer has a thickness of at least four times as large as a thickness of the electrode layer and 4 &mgr;m to 16 &mgr;m inclusive. The fabrication process is also provided.