Patent ID: 8053987

Claim:
A plasma display panel comprising: a pair of substrates; at least one pair of electrodes provided between the pair of substrates; a phosphor layer provided between the pair of electrodes; and an antireflective layer provided over an outer side of one of the pair of substrates, wherein the one of the pair of substrates has a light-transmitting property, wherein the antireflective layer comprises a plurality of pyramidal projections that lie adjacent to each other with a space, wherein each of the plurality of pyramidal projections is covered by a covering film, wherein an index of refraction of the covering film is higher than an index of refraction of the pyramidal projection, wherein one of the plurality of pyramidal projections has a first portion having a first refractive index and a second portion having a second refractive index different from the first refractive index, wherein the first portion is closer to the one of the pair of substrates than the second portion, and wherein the first refractive index has a closer refractive index to a refractive index of the one of the pair of substrates than the second refractive index.