To provide a plane display device capable of displaying with a high definition and high density and reducing the driving power, i.e., the power consumption.

A plane display device is configured so that a first 1 and a second substrate 2 are arranged oppositely, and a discharge sustaining electrode group 5 consisting of a plurality of pairs of discharge sustaining electrodes 3 and 4 is formed on the first substrate 1 while an address electrode group consisting of a plurality of address electrodes is formed on the second substrate, wherein in particular, a plasma discharge display is made chiefly by cathode glow discharge, whereby the spacing of electrodes is narrowed so that displaying with a high definition and thigh density is established.