After applying solder mask to printed circuit board (to protect some copper parts of electrical networks from covering by solder) the silkscreen is added to pcb. This process uses the white color material by standard but there can be blue, red, black, green colors as well. To make text and other signs on boards this process uses photoprocess sensitive to UV light.
Visit us at http://www.pcbone.com/edu/ for more info about the whole printed circuit board manufacturing process.
Post time: 09-21-2016