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:
Nov. 13, 2001
Filed:
Apr. 12, 2000
Miho Nakamura, Yokohama, JP;
Hideki Sato, Yokohama, JP;
Keiichi Yano, Yokohama, JP;
Nobuyuki Mizunoya, Yokohama, JP;
Tadashi Ishii, Yokosuka, JP;
Seiko Nagano, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
The present invention provides a ceramic circuit board comprising: a ceramic substrate comprising ceramic crystal grains and liquid phase component grains; and a conductive layer to be formed as a circuit integrally formed to the ceramic substrate, wherein the ceramic substrate has a thermal conductivity of 180 W/m·K or more and the ceramic crystal grains have an average grain size of 10 &mgr;m or less. According to the structure described above, there can be provided a ceramic circuit board which has a high thermal conductivity of 180 W/m·K or more, an excellent heat radiating property and a high strength which is capable of reducing crack formation during the assembling and operation of the circuit board, and is capable of reducing short-circuit accident to be occurred in the conductive layer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile