A connector assembly includes a sheet-like base that is flexible and includes a base body and a tag portion drawn from the base body, a terminal member disposed on a front surface of the base body, a wire disposed to extend from the front surface of the base body to a front surface of the tag portion, the wire having one end thereof connected to the terminal member and another end thereof extending to the front surface of the tag portion, and a connector mounted on the front surface of the tag portion and connected to the another end of the wire, and the tag portion is folded toward the base body such that a rear surface of the tag portion faces a rear surface of the base body, whereby the connector is disposed on the rear surface side of the base body.