Each of the row electrodes (X1, Y1) of a PDP is constituted of a pair of row electrodes X1, Y1. Each of the transparent electrodes X1a, Y1a of the respective row electrodes X1, Y1, which face each other across a discharge gap g1 and between which a sustaining discharge is initiated, has a width set at 150 μm or less in the transverse direction with respect to the longitudinal direction of the row electrodes X1, Y1. Xenon included in a discharge gas filling in a discharge space has a partial pressure set at 6.67 kPa or more. In consequence, a high luminous efficiency is achieved.