Patent ID: 8474135
Filing Date: 2013-07-02
Classification: H05K,Y10T

Abstract:
1. A method for fabricating a printed circuit board, the method comprising: manufacturing a base film including a first side and a second side, the second side being opposite to the first side; printing a first wiring on the first side of the base film with a high-viscosity conductive material having a viscosity of 5,000 to 300,000 centipoise (CPS); then forming a via-hole that passes through both the first and second sides of the base film, and passes by the first wiring; and printing a second wiring on the second side of the base film with a low-viscosity conductive material having a viscosity of 100 to 5,000 CPS, wherein the low-viscosity conductive material is applied to an inner wall of the via-hole to conductively connect the first wiring to the second wiring.