| 摘要 |
PURPOSE:To provide a flex rigid printed wiring board having high reliability about the electric connection against heat. CONSTITUTION:For this flex rigid printed wiring board which is constituted in such a way that, after hard printed wiring boards are thermocompression bonded to both side of a flexible printed wiring board by means of interlayer adhesive sheets, through holes are formed through the integrated laminated board and both substrates are electrically connected to each other by performing copper plating to the through holes, a bonding agent having a material characteristic of 50-100MPa in modulus of elasticity at 125 deg.C and 10-15X10-5 deg.<-1> in coefficient of linear expansion is used for the adhesive sheets. |
