Patent ID: 8858808
Filing Date: 2014-10-14
Classification: H05K,Y10T

Abstract:
1. A method for providing thin printed circuit board wet process consistency on the same carrier, comprising the steps of: a) providing a frame including a rectangular rigid frame body made of conductive material, the frame body extending about a central opening and defining a plurality of frame edges disposed at opposing sides of the central opening, a plurality of flanges each inwardly projecting into the central opening from an inside frame edge of the frame body, and an electroconductive positioning member being set on each flange; b) providing a thin printed circuit board to be disposed within the frame edges of the frame, the thin printed circuit board engaging the flanges to be stopped thereby from passing through the central opening, the thin printed circuit board having a plurality of positioning holes corresponding to the electroconductive positioning members for hanging the thin printed circuit board on the frame, whereby the thin printed circuit board stays smooth and flat, the thin printed circuit board being spaced from the inside frame edges of the frame while maintaining electrical contact therewith through contact between the positioning holes and the positioning members; c) providing a plurality of securing members fixing on the positioning members, each securing member corresponding to a surface of the thin printed circuit board has an electroconductive contacted surface, such that the surface of the thin printed circuit board is electronically connected to the frame by the securing members and positioning members; d) providing a plurality of treatment cells being arranged in sequence, and a predetermined chemical being required for the wet process is respectively arranged in the treatment cells; and e) providing a plurality of hoist devices being arranged above the plurality of treatment cells, moving back and forth for the frame to be clamped and moved to each designated treatment cell in order to conduct the wet process.