PLASMA DISPLAY PANEL

A plasma display panel is formed of front panel (2) and rear panel (10). Front panel (2) includes glass substrate (3) on which display electrodes (6) are formed, dielectric layer (8) covering display electrodes (6), and protective layer (9) formed on dielectric layer (8). Rear panel (10) confronts front panel (2) to form discharge space (16) therebetween, and includes address electrodes (12) formed along a direction intersecting with display electrodes (6), primary dielectric layer (13) covering address electrodes (12), and barrier ribs (14) formed on primary dielectric layer (13) for partitioning discharge space (16). Protective layer (9) includes a primary film made of metal oxide and formed on dielectric layer (8), and an aggregated particle formed of several crystal particles aggregated together and made of metal oxide and attached to the primary film. A percentage of voids of primary dielectric layer (13) falls within a range from 2% to 20%.