| 摘要 |
PROBLEM TO BE SOLVED: To provide a flexible circuit board which is superior in radiation property, noise resistance, and a voltage resistance characteristic. SOLUTION: In the circuit board; an insulating layer, and a conductor circuit or metal foil are alternately laminated. Thickness of the conductor circuit or metal foil is 5 to 450μm. The insulating layer is formed of a curing object of resin composition containing inorganic filler and thermosetting resin. Thickness of the insulating layer is 20 to 300μm. At least one through-hole used for electrically connecting the conductor circuits or metal foil is 0.0078 mm<SP>2</SP>. COPYRIGHT: (C)2007,JPO&INPIT |
