Patent ID: 6665025
Filing Date: 2003-12-16
Classification: G02F,H05K

Abstract:
A method for manufacturing a printed circuit board (PCB), the PCB having a signal transmission pattern and a metal film formed on a bottom surface thereof, the metal film formed where a conductive fixing element is accommodated to fix the PCB to a conductive housing and electrically connected to the fixing element, the method comprising the steps of:forming a first mask to block a portion of the bottom surface where a the signal transmission pattern is not formed; forming a solder resist film on the first mask to cover the signal transmission pattern, wherein the solder resist film is not formed on the portion blocked by the first mask; and forming a grounding protrusion on the portion blocked by the first mask and not covered by the solder resist film, wherein the grounding protrusion has a height large enough to be electrically connected to the metal film via the conductive housing when the PCB is fixed to the conductive housing by the conductive fixing element.