Patent ID: 9374886
Filing Date: 2016-06-21
CPC Classification: H05K,Y10T

Claim Text:
1. A signal line comprising: a laminated body including at least a first insulator layer, a second insulator layer, and a third insulator layer that each include a flexible material and that are laminated in a lamination direction from an upper side of the laminated body to a lower side of the laminated body in this order; a first ground conductor fixed to a main surface on an upper side of the first insulator layer; a wiring conductor fixed to a main surface on an upper side of the second insulator layer; and a second ground conductor provided on a main surface of the third insulator layer; wherein the first ground conductor, the wiring conductor, and the second ground conductor define a stripline structure; the laminated body has a bent structure so that the third insulator layer is located on an inner periphery side of the laminated body, as compared to a location of the first insulator layer; and surface roughnesses of surfaces on upper sides of the first ground conductor and the wiring conductor in the lamination direction are smaller than surface roughnesses of surfaces on lower sides of the first ground conductor and the wiring conductor in the lamination direction.