All the wirings MXa to MXe are formed on an insulating film ISa by patterning, for example, a metal film made mainly of aluminium or the like or a built-up conductor film made mainly of aluminium or the like and other type of conductor film (e.g. a built-up conductor film obtained by depositing a metal film made mainly, for example, of titanium (Ti), titanium nitride (TiN), aluminium or the like a