MgO DEPOSITION MATERIAL

摘要

An MgO deposition material for forming a protection film for a plasma display panel is composed of an MgO pellet having an MgO purity of 98% or more and a relative density of 90% or more. The pellet includes one or more elements selected from a group composed of Y, La, Ce, Pr, Nd, Pm and Sm. When Y is included, Y concentration is 5-10,000ppm, when La is included, La concentration is 5-15,000ppm, when Ce is included, Ce concentration is 5-16,000ppm, when Pr is included, Pr concentration is 5-16,000ppm, when Nd is included, Nd concentration is 5-16,000ppm, when Pm is included, Pm concentration is 5-16,000ppm, and when Sm is included, Sm concentration is 5-16,000ppm.