Patent ID: 9095083
Filing Date: 2015-07-28
Classification: B05D,C23C,H05K

Abstract:
1. A manufacturing method for a multi-layer circuit board, comprising: providing a substrate having a first via penetrating the substrate; forming a first patterned circuit layer on a surface of the substrate by using the first via as an alignment target, and the first patterned circuit layer including a first concentric-circle pattern surrounding the first via; forming a first stacking layer on the surface and covering the first patterned circuit layer, and the first stacking layer including a first dielectric layer and a first circuit layer covering the first dielectric layer; forming a first through hole, and the first through hole penetrating regions where an inner diameter of a first concentric circle from a center of the first concentric-circle pattern is orthogonally projected on the first stacking layer and the substrate; forming a second stacking layer on the first stacking layer, and the second stacking layer including a second dielectric layer and a second circuit layer covering the second dielectric layer; and forming a second through hole, and the second through hole penetrating regions where an inner diameter of a second concentric circle from the center of the first concentric-circle pattern is orthogonally projected on the second stacking layer, the first stacking layer and the substrate.