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Many friends can't understand how to produce the fpc soft board with the same thickness as A4 paper. Now let's talk about the process flow of fpc production.

Fpc is divided into single-panel and double-panel, and the production process is somewhat different. Next, we will explain their respective production processes.

Single panel flow chart

Engineering documents -- copper foil -- pretreatment -- press dry film -- exposure -- development -- etching -- film stripping -- AOI -- pretreatment -- coating film pasting (or ink printing) -- pretreatment before electroplating -- electroplating -- post-electroplating treatment -- pressure reinforcement -- external punching -- electrical measurement -- visual inspection -- shipment

Flow chart of double-sided board

Engineering documents -- copper foil -- drilling -- black hole (PTH

It can be seen from the above process that it takes more than 20 processes to make a good fpc board, and each process needs to be strictly controlled to meet the quality requirements and finally ship.