This invention discloses a method for manufacturing a flexible circuit board and a flexible circuit board, relating to the field of
integrated circuit manufacturing technology. The method includes the following steps: providing a flexible
copper-clad laminate (CCL) having a pre-processed area; drilling holes in the CCL to form positioning holes, the positioning holes partially overlapping with the pre-processed area and forming a semi-circular notch in the overlapping area; providing a
punching die to punch the flexible CCL, the area covered by the projection of the
punching die along the
punching direction forming a first projection pattern, the first projection pattern partially overlapping with the pre-processed area and forming a pad half-hole in the overlapping area, the pad half-hole completely covering the semi-circular notch, and the sidewall of the pad half-hole forming a sidewall
copper-plated area. By forming a larger sidewall
copper-plated area formed by the sidewall of the pad half-hole, sufficient and stable solder volume can be provided for
soldering, reducing the risk of cold solder joints and improving the yield of
integrated circuit manufacturing, production of dedicated
lithography machines, and
etching machines.