Patent ID: 8561294
Filing Date: 2013-10-22
Classification: H01B,H05K,Y02P,Y10T

Abstract:
1. A method of manufacturing a circuit board comprising the steps of: preparing a fiber piece housing paste including a conductive paste having conductive powder and a resin and a fiber piece taken away from a first prepreg; filtering the fiber piece housing paste in a paste state by using a filter to remove the fiber piece from the fiber piece housing paste for fabricating a filtered recovery paste; adding at least one of a solvent, a resin, and a paste having a different composition from the filtered recovery paste to the filtered recovery paste for fabricating a reuse paste; sticking a first protective film to a surface of a second prepreg; forming a first hole on the second prepreg through the first protective film; filling the first hole with the reuse paste; peeling the first protective film to form a protruded portion constituted of the reuse paste on the surface of the second prepreg; disposing a metallic foil on both sides of the second prepreg to pressurize the second prepreg from an outside of the metallic foil; heating the second prepreg to cure the second prepreg and the reuse paste; and processing the metallic foil into a wiring pattern.