MANUFACTURING METHOD FOR FLEXIBLE PRINTED CIRCUIT BOARD USED FOLDER TYPE PERSONAL COMMUNICATION ASSISTANTS

摘要

PURPOSE: A manufacturing method for flexible printed circuit board(PCB) used folder type personal communication assistants is provided to improve the flexibility and to remove the slope between the folder unit and the main body at the exposure process and to implement the infinitesimal pattern by forming the laminated copper film on the polyimide. CONSTITUTION: The manufacturing method for flexible PCB includes the steps of laminating the copper film(133) with the polyimide film(111) of the main body(bbb) and the folder unit(aaa) without using the glue, and patterning the copper thickness less than 10 micrometer. The main body(bbb) and the folder(aaa) has the same vertical cut end structure. The manufacturing method does not use a glue, which decreases the copper plating thickness on the via hole and weakens the brittleness of the copper thin film caused by the electro plating.