Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Ryosuke Usui0
Makoto Murai0
Date of Patent
January 6, 2009
0Patent Application Number
113625160
Date Filed
February 27, 2006
0Patent Primary Examiner
Patent abstract
The present invention provides a circuit device capable of controlling deformation of a circuit device while preventing an insulating layer from peeling from a substrate. The circuit device includes a substrate, an insulating layer formed on the substrate, a filler filled into the insulating layer, a conductive layer formed on the insulating layer, and a circuit element formed on the conductive layer, wherein an average particle diameter of the filler filled into the insulating layer is controlled so that a Young's modulus of a part of the insulating layer on a substrate side can be smaller than a Young's modulus of a part of the insulating layer on an opposite side relative to the substrate side.
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