Patent ID: 8476531

Claim:
A flex-rigid wiring board comprising: a flexible board comprising a flexible substrate and at least one conductor pattern formed over the flexible substrate; a non-flexible substrate disposed adjacent to the flexible board; an insulating layer covering the flexible board and the non-flexible substrate and exposing at least one portion of the flexible board; a conductor pattern formed on the insulating layer; and at least one via formed in the insulating layer and connecting the conductor pattern on the insulating layer and the conductor pattern of the flexible board, wherein the at least one via comprises a plurality of vias, the at least one conductor pattern comprises a plurality of conductor patterns formed over the flexible substrate, the flexible substrate has a plurality of connection pads positioned to be connected to the vias, the connection pads have a pitch larger than a pitch of the conductor patterns formed over the flexible substrate, and the conductor patterns are electrically connected to the connection pads and formed such that the pitch of the conductor patterns increases toward the connection pads.