Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yoichi Kitamura0
Minoru Hashimoto0
Tatsuya Kaneko0
Date of Patent
June 15, 2010
0Patent Application Number
120079720
Date Filed
January 17, 2008
0Patent Primary Examiner
Patent abstract
A circuit module containing a ceramic carrier substrate to carry electronic parts, ceramic substrate pads provided on a surface of the ceramic carrier substrate, and a lid having a cavity and a bottom surface joined to the ceramic substrate pads with solder, the lid being a stepped lid having protrusions adjacent to the cavity, and dents adjacent to the cavity with the protrusions intervening therebetween, the protrusions being in contact with the ceramic carrier substrate with a prescribed distance to the ceramic substrate pads, and the dents being joined to the ceramic substrate pads with solder.
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