| 摘要 |
PROBLEM TO BE SOLVED: To obtain inorganic particles used for producing photosensitive pastes useful the production of plasma display panels each having a high aspect ratio and a highly minute bulkhead and enabling excellent contrast display, by specifying a stimulus value Y in a XYZ color system before calcination and a stimulus value Y after the calcination. SOLUTION: The inorganic particles have a stimulus value Y of 20-80 before calcination and a stimulus value Y of 5-30 after the calcination. The inorganic particles consist mainly of glass powder (50-90 wt.%), and preferably has an average refractive index of 1.5-1.7, a glass transition point of 450-550 deg.C and a softening point of 500-600 deg.C. The glass powder comprises 3-15 wt.% of lithium oxide, 10-30 wt.% of silicon oxide, 20-40 wt.% of boron oxide, 2-15 wt.% of barium oxide, and 10-25 wt.% of aluminum oxide. The inorganic particles further contain 3-20 wt.% of a black pigment (a metal such as Ru or its oxide) and 10-50 wt.% of a filler (titanium oxide, alumina, etc.). |
