METHOD FOR SURFACE TREATMENT OF KEY PAD

摘要

PURPOSE: A method for processing the surface of a keypad is provided to improve the quality of the key pad by preventing the galvanic corrosion in an OSP(Organic Solderability Preservative) treatment process without an additional process. CONSTITUTION: A PSR(Photo Solder Resist) is treated on a circuit pattern(S10). A conductive material is printed on the surface of a dome switch or key switch(S20). The conductive material is dried(S30). The OSP is treated on a general pad(S40). The conductive material is carbon paste.