Patent ID: 9743529
Date: 2017-08-22
CPC Classifications: H05K,Y10T

Claim:
1. A method for manufacturing a multilayer rigid flexible printed circuit board comprising: providing a base substrate including a flexible film having a first circuit pattern formed on one or both surfaces thereof, the flexible film having an area corresponding to an area of the multilayer rigid flexible printed circuit board; forming a laser blocking layer on the first circuit pattern of a flexible region of the base substrate, the laser blocking layer including a copper foil layer; disposing a plurality of pattern layers on at least one surface of the base substrate having the laser blocking layer formed thereon, each of the pattern layers having an insulator and a second circuit pattern formed on the insulator layer; disposing an outer pattern layer having a via hole or a through hole formed therein; performing laser processing to form a window by removing portions of the plurality of pattern layers and the out pattern layers, which are disposed on the flexible region; and forming an outer circuit pattern by performing copper plating on the laser-processed outer pattern layer and etching portions of the copper plating layer, wherein the first circuit pattern of the flexible region of the base substrate is protected by the laser blocking layer during the performing laser processing and the flexible region of the base substrate remains in the window after the performing laser processing, wherein the etching portions of the copper plating layer includes removing a portion of the copper foil layer of the laser blocking layer disposed in the window, and, after the laser processing, a portion of the copper foil layer of the laser blocking layer remains in the rigid region adjacent to the window.