Patent ID: 8405999
Filing Date: 2013-03-26
Classification: H05K,Y10T

Abstract:
1. A flexible wiring board comprising: a first flexible base material having a first conductor pattern formed thereon such that side surfaces of the first conductor pattern extend upwardly from the first flexible base material; a second flexible base material disposed adjacent to the first flexible base material; a first circuit pattern formed on a first surface of the second flexible base material such that side surfaces of the first circuit pattern extend upwardly from the first surface of the second flexible base material; a second circuit pattern formed on a second surface of the second flexible base material which opposes the first surface of the second flexible base material; a filled via structure provided within said second flexible base material and connecting the first circuit pattern to the second circuit pattern; an insulating layer covering the first flexible base material and the second flexible base material, the insulating layer being a heat pressed layer which contacts at least the side surfaces of the first conductor pattern and the side surfaces of the first circuit pattern such that the insulating layer conforms to a shape of the first circuit pattern and the first flexible base material having the first conductor pattern thereon, wherein the insulating layer having an opening exposing at least one portion of the first flexible base material; a second conductor pattern formed on the insulating layer; and a plating layer connecting the first conductor pattern of the first flexible base material and the second conductor pattern on the insulating layer.