Manufacturing method for printed circuit board

Abstract

A printed circuit board is manufactured by forming on a top surface of a support base, in a pattern having a predetermined width, a first metal layer for defining boundary ends between adjacent printed circuit boards in a printed circuit board assembly, forming on top of the first metal layer a wiring structure portion having an insulating layer and a conductive layer for each printed circuit board in the printed circuit board assembly, forming, in the wiring structure portion, grooves having a pattern corresponding to the pattern of the first metal layer to expose the first metal layer, forming a second metal layer on the wall surface of the grooves in the wiring structure portion, and cutting the first metal layer on the bottom surface of the grooves to separate each printed circuit board.

Dependencies are inferred from the claim text.