Electricity: conductors and insulators – Conduits – cables or conductors – Preformed panel circuit arrangement
Reexamination Certificate
2008-06-27
2011-11-15
Vortman, Anatoly (Department: 2835)
Electricity: conductors and insulators
Conduits, cables or conductors
Preformed panel circuit arrangement
C029S852000, C361S748000
Reexamination Certificate
active
08058566
ABSTRACT:
A packaging substrate structure includes a dielectric layer with a plurality of dielectric pillars disposed on a portion of a large-dimension opening area of the dielectric layer; and a first circuit layer with a plurality of first circuits disposed on a portion of the dielectric layer, and a conductive block disposed in the large-dimension opening area of the dielectric layer having the dielectric pillars. The dielectric pillars reduce the difference of the electrical current density distribution between the large-dimension opening area and small-dimension opening areas during electroplating, thereby overcoming the conventional drawback of insufficient thickness or a hollow center of the conductive block that results in an uneven thickness of the circuit layer. The invention further provides a method of manufacturing the packaging substrate structure.
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Schmeiser Olsen & Watts LLP
Unimicron Technology Corp.
Vortman Anatoly
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