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. 23, 2012
Filed:
Mar. 25, 2009
Shinichiro Kakei, Tokyo, JP;
Kenji Horino, Tokyo, JP;
Hitoshi Saita, Tokyo, JP;
Yasunobu Oikawa, Tokyo, JP;
Shinichiro Kakei, Tokyo, JP;
Kenji Horino, Tokyo, JP;
Hitoshi Saita, Tokyo, JP;
Yasunobu Oikawa, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
In a dielectric element, the side faces are roughened so that the surface roughness Ra is 15 nm or greater. By this means, the area of contact between a glass epoxy resin substrate and insulating material is increased, adhesion with resin substrates is improved, and strength and reliability can be enhanced when buried between two resin substrates. In the dielectric element, the surface roughness Ra of side surfaces is 5000 nm or less, so that when burying the dielectric element between a glass epoxy resin substrate and insulating material, the occurrence of air bubbles between the surface of the dielectric element and the resin can be prevented.