There is provided a photo-curable, electrically conductive composition which is capable of forming a lower layer (black layer) electrode circuit satisfying both the sufficient conductivity and blackness after calcination in the formation of an electrode on a front substrate of a plasma display panel (PDP). The composition comprises, in the first fundamental mode thereof, (A) electrically conductive black fine particles having a specific surface area of more than 20 m
/g,(B) anorganic binder, (C) a photopolymerizable monomer, and (D) a photopolymerization initiator, and in the second mode further comprises (E) inorganic fine particles besides the above components. The lower layer (black layer) electrode circuit of bus electrodes (
) of the PDP is formed by applying such a photo-curable, electrically conductive composition on transparent electrodes (
) of a front glass substrate (
), exposing the applied layer to light according to a predetermined pattern, and subjecting the layer to development and calcination.