Patent ID: 9313900
Filing Date: 2016-04-12
CPC Classification: H05K,Y10T

Claim Text:
1. A method for manufacturing a double-sided flexible printed circuit board, the method comprising the steps of: (A) preparing a single-sided copper clad laminate or forming a copper layer on a single side of a flexible base substrate to manufacture the single-sided copper clad laminate; (B) forming via-holes in the flexible base substrate through the single-sided copper clad laminate; (C) printing a conductive paste on the other side of the copper foil of the single-sided copper clad laminate to form a plated bottom layer on the via-hole simultaneously with forming a circuit pattern; (D) plating a copper clad surface of the single-sided copper clad laminate, the via-hole including the plated bottom layer formed thereon, and the circuit pattern formed by printing the conductive paste; (E) forming a coverlay layer on the conductive paste-printed surface; and (F) etching the copper clad surface of the copper clad laminate to form a circuit.