| 摘要 |
PROBLEM TO BE SOLVED: To provide a planar light source endowed with a high luminance and a high luminous uniformity.SOLUTION: The planar light source is provided with a first substrate, a second substrate, a sealing part, a plurality of groups of dielectric patterns, and a phosphor layer. The first substrate has an electrode on it. The sealing part is arranged between the first substrate and the second substrate, and gap parts are formed between the first substrate, the second substrate and the sealing part. These groups of the dielectric patterns are formed in the gap part between the first substrate and the second substrate. Each of the groups of dielectric patterns has at least two dielectric strips, and each of the dielectric strips covers one of corresponding electrodes. A height between the first substrate and the second substrate is held between a plurality of barrier ribs which do not cross the dielectric strips each other. Each of the dielectric strips has an upper surface and two side surfaces, and the upper surface has an uneven outline. The phosphor layer is arranged between the two dielectric strips of each group of the dielectric patterns, and a phosphor layer is further formed on a convex part and a concave part of the dielectric strip. |
