Windowing structure for pressing dry film before plating of goldfinger of module board
A technology of gold fingers and fingers, which is applied in the window structure field of pressing dry film before gold finger plating, can solve the problems of inconsistent appearance, scrapping, non-sticking of gold and other problems of module boards, and achieve the effect of reducing the probability of scrapping
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[0011] Embodiment: A windowing structure for pressing dry film with gold fingers of a module board before plating. The metal layer on the substrate surface of the module board is formed with pads, connection lines, via rings 3 and fingers 2 to be gold-plated. The dry film 1 is pressed and covered on the surface of the module board. The dry film opens a window at the position of the finger 2 to be gold-plated to expose the finger 2 to be gold-plated. The surface of the module board removes the gold finger via hole ring 3, gold The connection line 4 between the via ring 3 of the finger and the finger 2 to be gold-plated and the part outside the surface of the finger 2 to be gold-plated are covered with solder resist ink 5; the dry film windowed portion 10 extends to expose the gold finger The via ring 3 of the gold finger and the connection line 4 between the via ring 3 of the gold finger and the finger 2 to be gold-plated.
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