Patent ID: 8810340

Claim:
A signal line comprising: a main body including a plurality of insulating sheets made of a flexible material and stacked on each other in a stacking direction, a signal line portion, and a connector portion provided at an end of the signal line portion, the connector portion including an external terminal; a signal line including a line-shaped conductor provided in the signal line portion of the main body; a first ground conductor including a slit located therein, the first ground conductor being provided on a first side of the signal line in the stacking direction, the slit overlapping the signal line when viewed in plan from the stacking direction; and a second ground conductor provided on a second side of the signal line in the stacking direction, the second ground conductor being overlapped by the signal line when viewed in plan from the stacking direction; wherein the first ground conductor, the second ground conductor, and the signal line define a strip line structure; a distance in the stacking direction between the first ground conductor and the signal line is smaller than a distance in the stacking direction between the second ground conductor and the signal line; the first ground conductor includes two first edge portions extending in a predetermined direction, the slit is located between the two first edge portions, the signal line includes two second edge portions extending in the predetermined direction, and neither the first ground conductor nor the signal line is disposed in spaces between the first edge portions and the second edge portions when viewed in plan from the stacking direction; the signal line portion is defined by a first portion of the main body extending from a first outer longitudinal edge of the main body to a second outer longitudinal edge of the main body opposed to the first outer longitudinal edge; the connector portion is defined by a second portion of the main body extending from the first outer longitudinal edge of the main body to the second outer longitudinal edge of the main body opposed to the first outer longitudinal edge; and a width of the connector portion extending from the first outer longitudinal edge to the second outer longitudinal edge is greater than a width of the signal line portion extending from the first outer longitudinal edge to the second outer longitudinal edge.