FLEXIBLE PRINTED CIRCUIT BOARD AND HARD DISK DRIVE HAVING THE FLEXIBLE PRINTED CIRCUIT BOARD

摘要

PROBLEM TO BE SOLVED: To provide a flexible printed circuit board which can prevent a short circuit between a circuit layer and a conductive metal layer and can avoid air leakage through a punched hole. SOLUTION: A flexible printed circuit board comprises: a circuit layer 37 having a predetermined circuit; a base layer 38 which supports the circuit layer; a conductive metal layer 40 formed on at least one side of the base layer; and an insulation film 39 positioned between the base layer and the conductive metal layer. A hole 35 penetrates the circuit layer and the base layer, and is covered with the insulation film. COPYRIGHT: (C)2006,JPO&NCIPI