Patent ID: 8022308
Filing Date: 2011-09-20
Classification: H05K

Abstract:
1. A wired circuit board comprising: a base insulating layer extending in a longitudinal direction and forming a first insulating layer; a second insulating layer formed on top of the first insulating layer; a conductive layer having a plurality of signal wirings formed on the second insulating layer and in mutually spaced-apart and parallel relation in a perpendicular direction to the longitudinal direction and a thickness direction of the base insulating layer and the second insulating layer, and connecting terminals provided on both longitudinal ends of each of the signal wirings; a ground layer formed to surround each of the signal wirings in a perpendicular direction to the longitudinal direction, with a lower surface of the ground layer being formed on a top surface of the base insulating layer; and a cover insulating layer extending in the longitudinal direction and which covers the conductive layer and the ground layer, the cover insulating layer being shorter in the longitudinal direction than the base insulating layer and the second insulating layer, such that the connecting terminals provided on both longitudinal ends of each of the signal wirings are exposed from the cover insulating layer, wherein a slit along the longitudinal direction is formed between each of the signal wirings and penetrates completely through the base insulating layer, the second insulating layer, and the cover insulating layer in the thickness direction, and wherein the slit is formed to extend adjacent to each of the connecting terminals on one side in the longitudinal direction, and adjacent to each of the connecting terminals on the other side in the longitudinal direction.