To provide a circuit board comprising a plurality of first signal lines which transmits first signals, a plurality of second signal lines which transmits second signals which are higher in speed than the first signals, a joint which is bonded to a joint of another circuit board through an anisotropic conductive material, a plurality of first electrodes which are arranged at regular intervals separated by a first distance in the joint, each of the first electrodes are connected to a respective one of the first signal lines, and a plurality of second electrodes which are arranged at regular intervals separated by a second distance larger than the first distance in the joint, each of the second electrodes are connected to a respective one of the second signal lines.