Circuit board and manufacturing method thereof

Electricity: conductors and insulators – Conduits – cables or conductors – Preformed panel circuit arrangement

Reexamination Certificate

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C174S258000, C174S263000, C174S264000, C174S261000, C361S708000, C361S719000, C361S795000, C257S698000, C257S758000, C257S774000, C428S209000, C428S131000, C029S829000, C029S830000, C029S846000, C029S852000

Reexamination Certificate

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08058561

ABSTRACT:
A manufacturing method of a circuit board is provided. A metal core is provided. A conductive layer is formed on each of some carriers. The carriers and dielectric layers are laminated at both sides of the metal core to form a stacked structure. Each of the dielectric layers is located between the corresponding carrier and the metal core, and a portion of the conductive layer is embedded in the corresponding dielectric layer. Then, the carriers are removed. A blind via and/or a through via are/is formed in the stacked structure to connect the corresponding conductive layer and the metal core and/or connect the conductive layers at both sides of the metal core, wherein the through via penetrates the metal core. The conductive layer on a surface of the dielectric layer is removed.

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Chinese First Examination Report of China Application No. 200810082126.2, dated Aug. 3, 2010.

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