| 摘要 |
A FPCB(Flexible Printed Circuit Board) having high ESD(Electro Static Discharge) shielding effect and a manufacturing method thereof are provided to prevent crack in a step region between a rigid PCB of a camera module and a FPCB by forming a protective layer on a top of a first protective layer. A copper foil layer is formed on a top of an insulating film layer(200). A dry film for forming a circuit pattern is laminated on a top of the copper foil layer. The circuit pattern is formed on a copper foil pattern layer(202a) by lithography and etching. A first protective layer(208) is formed on a top of the copper pattern layer. A second protective layer(210) is formed on a top of the first protective layer by a sputtering process. Thickness of the second protective layer is 10um ~ 14um. The second protective layer is made of silver nano material. |
