SUSPENSION SUBSTRATE AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a suspension substrate which can suppress reduction of transmission loss and is excellent in substrate reliability in a long term use. SOLUTION: The suspension substrate has: a metal support substrate 1 which has a concave portion; a ground layer 2 which is formed in a valley and is higher than the metal support substrate in conductivity; an insulating layer 3 formed on the metal support substrate and the ground layer; and a wiring pattern 4 formed on the insulating layer. COPYRIGHT: (C)2009,JPO&INPIT