Patent ID: 7705537

Claim:
A plasma display device comprising: a pair of substrates confronting each other so as to form a discharge space between the pair of substrates; a barrier rib arranged on at least one of the pair of substrates to divide the discharge space into a plurality of spaces; a group of electrodes arranged on the pair of substrates so as to generate discharge in the discharge space divided with the barrier rib; and a panel main body with a phosphor layer configured to emit light by discharge, wherein the phosphor layer has a green phosphor layer including phosphor particles of at least Zn 2 SiO 4 :Mn, a surface of each of the phosphor particles of at least Zn 2 SiO 4 :Mn is partially coated with aluminum oxide, and the ratio of Al element to Si element measured within 10 nm from an outermost surface of the phosphor particle of at least Zn 2 SiO 4 :Mn measured using an XPS apparatus is 0.4 to 2.2.