PROCESS FOR PRODUCING PHOSPHOR AND PLASMA DISPLAY PANEL UNIT

摘要

The steps of weighing, mixing and filling for phosphor powder are followed by the step wherein firing in a reducing atmosphere is carried out at least once and, after the final reducing atmosphere treating step, pulverization, dispersion, water washing and drying and further the oxygen plasma atmosphere treating step wherein treating in an oxygen plasma atmosphere is performed, so that host crystals are restored with respect to oxygen defects.