Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
June 15, 2010
Patent Application Number
11536317
Date Filed
September 28, 2006
Patent Primary Examiner
Patent abstract
A circuit board includes: a plurality of wiring layers; an insulating layer which insulates the plurality of wiring layers, the insulating layer containing a fibrous filler and a resin; and a conductor part formed on a sidewall of a via piercing through the insulating layer. The fibrous filler protrudes from the sidewall and is covered with the conductor part, with a length greater than the thickness of the conductor layer.
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