Patent ID: 8607448

Claim:
A method of manufacturing a printed circuit board having a micro strip line, the method comprising: forming a signal line on a carrier; burying the signal line in a first surface of a first insulation layer by pressing the carrier onto the first surface of the first insulation layer; removing the carrier; forming a plurality of conductors in the first insulation layer such that the conductors penetrate through the first insulation layer and are disposed on opposing sides of the signal line in parallel with the signal line; and forming a ground layer on a second surface of the first insulation layer such that the ground layer is electrically connected to the plurality of conductors, wherein the width of the signal line becomes narrower toward the second surface of the first insulation layer, the width of each of the plurality of conductors becomes narrower toward the first surface of the first insulation layer, and a side of the signal line faces a side of one of the plurality of conductors in parallel.