What ink are used on the printing FPC?
Black oil is used on a large area of FPC lines to enhance the mechanical strength of FPC. (also used for keeping secret parts of a secret)
Green for solder joints have insulation effect, generally in the use of FPC, there is no glue place.
FPC printing ink; printing, printing of white oil to protect the oil (black oil), dry film solder printing (green)White mostly in FPC printing of text and numbers, such as two tubes.