Plasma display panel and plasma display device

A plasma display panel comprising at least display electrodes, a dielectric layer covering the display electrodes, barrier ribs, and discharge spaces, in which discharge gas is filled in the discharge spaces,

• wherein, in each of said discharge cells, said display electrode has a projection extending in a column direction from an electrode body extending in a row direction, and the projection forms a discharge gap together with an adjacent paired projection of the other display electrode,
• said projection comprises a substantially trapezoidal part, and
• when a ratio of an upper base to a lower base of the trapezoidal part of said projection is defined as Y and a thickness of said dielectric layer as X [μm], Y≦(0.4·X)1/2, X≦20 and Y≦0.5 are satisfied.

A plasma display panel comprising at least display electrodes, a dielectric layer covering the display electrodes, barrier ribs, and discharge spaces, in which discharge gas is filled in the discharge spaces to form a plurality of discharge cells,

• wherein, in each of said discharge cells, said display electrode has a projection extending in a column direction from an electrode body extending in a row direction, and the projection forms a discharge gap together with an adjacent paired projection of the other display electrode,
• said display electrode has a reed shape, and
• said dielectric layer is made of a dielectric whose relative dielectric constant is 10 or lower, and a film thickness of the dielectric layer is 10 μm or smaller.