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:
Sep. 28, 2004
Filed:
Oct. 09, 2001
Taku Takeishi, Chuo-ku, JP;
Katsuto Nagano, Chuo-ku, JP;
Suguru Takayama, Chuo-ku, JP;
Yoshihiko Yano, Chuo-ku, JP;
TDK Corporation, Tokyo, JP;
Abstract
The invention aims to provide a composite substrate which suppresses reaction of a substrate with a dielectric layer that can otherwise cause degradation of the dielectric layer and which can be sintered at high temperature while minimizing the occurrence of cracks in the dielectric layer, and an EL device using the composite substrate. The object is attained by a composite substrate in which an electrode and a dielectric layer are successively formed on an electrically insulating substrate, the substrate having a coefficient of thermal expansion of 10-20 ppm/K, and an EL device using the composite substrate.