Patent ID: 9295150
Filing Date: 2016-03-22
CPC Classification: H05K,Y10T

Claim Text:
1. A method for manufacturing a printed circuit board, comprising: providing a core substrate comprising a first dielectric layer, the first dielectric layer having a first surface and an opposite second surface; defining a first blind hole in the first surface of core substrate, the first blind hole extending toward the second surface and terminating at a position between the first and second surfaces of the first dielectric layer; forming a first conductive via in the first blind hole; forming a first trace layer on the first surface and a second trace layer on the second surface; laminating a second dielectric layer on the second trace layer and the first dielectric layer exposed from the second trace layer; forming a second blind hole passing through the second dielectric layer and a complementary portion of the first dielectric layer, the first conductive via exposed from the second blind hole; and forming a second conductive via in the second blind hole, the second conductive via contacting the first conductive via and being electrically connected with the first conductive via, and forming a third trace layer on a surface of the second dielectric layer, the first trace layer electrically connected with the third trace layer through the first conductive via and the second conductive via.