Patent ID: 8636868

Claim:
A method for manufacturing a laminated board, comprising: preparing a first carrier-attached-prepreg having a first insulating resin layer in which a fiber cloth is embedded, and a first carrier attached to the first insulating resin layer; preparing a second carrier-attached-prepreg having a second insulating resin layer in which a fiber cloth is embedded, and a second carrier attached to the second insulating resin layer; and laminating said first and second carrier-attached-prepregs by bonding said first insulating resin layer and said second insulating resin layer directly or via an additional member under reduced pressure to form a laminate of said first and second carrier-attached-prepregs, and by heating said laminate of first and second carrier-attached-prepregs, wherein the first carrier and the second carrier are separate from one another, wherein said preparing said first carrier-attached-prepreg comprises: preparing a first two-side carrier-attached-prepreg having a carrier, an insulating resin layer in which a fiber cloth is embedded and another carrier which are laminated in sequence; exposing said insulating resin layer of said first two-side carrier-attached-prepreg by removing the carrier in one side in said first two-side carrier-attached-prepreg, and wherein said preparing said second carrier-attached-prepreg comprises: preparing a second two-side carrier-attached-prepreg having a carrier, an insulating resin layer in which a fiber cloth is embedded and another carrier which are laminated in sequence; exposing said insulating resin layer of said second two-side carrier-attached-prepreg by removing the carrier in one side in said second two-side carrier-attached-prepreg, and wherein each of said preparing said first two-side carrier-attached-prepreg and said second two-side carrier-attached-prepreg, comprises: preparing a first insulating-resin-layer-attached-carrier, the first insulating-resin-layer-attached-carrier including an insulating layer and a carrier attached to the insulating layer; preparing a second insulating-resin-layer-attached-carrier, the second insulating-resin-layer-attached-carrier including an insulating layer and a carrier attached to the insulating layer; bonding the insulating resin layer of the first insulating-resin-layer-attached-carrier and the insulating resin layer of the second insulating-resin-layer-attached-carrier via the fiber cloth under reduced pressure to form a laminate of the first and second insulating-resin-layer-attached-carriers; and heating the laminate of the first and second insulating-resin-layer-attached-carriers.