Patent ID: 8084943
Filing Date: 2011-12-27
Classification: G02B

Abstract:
1. A plasma display panel comprising: a front plate and a back plate that are placed apart from each other; a partitioning wall that divides discharge space formed between the front plate and the back plate; a fluorescent layer formed in a discharge cell divided by the partitioning wall; electrodes that are aligned in the front plate and the back plate and that cause discharging in the discharge cell; and a front filter that is placed on an viewer side of the front plate, wherein the front filter has on the viewer side at least two resin layers of different refractive indices, and includes fine concaves and convexes on a surface on the viewer side, and on an interface between the two resin layers; and a following equation is satisfied when a haze factor of the front filter is HZ and an air conversion distance is L, the air conversion distance being a value adding values acquired by dividing lengths of materials that form a section between the fluorescent layer and the surface of the front filter on the viewer side, by refractive indices of the materials: