Patent ID: 6162750
Filing Date: 2000-12-19
Classification: C03C,H01J

Abstract:
A plasma display unit comprising a pair of substrate glasses, discharge electrodes formed on inner surfaces of said substrate glasses, and a fluorescent member disposed between said substrate glasses for emitting light in response to the discharge of said electrodes, wherein each of said substrate glasses consists essentially of, by weight, 50-65% SiO.sub.2, 2-15% Al.sub.2 O.sub.3, 0-3.5% MgO, 0-2.9% CaO, 2-13% SrO, 6-10% BaO, 10-27% MgO+CaO+SrO+BaO, 0-1% Li.sub.2 O, 2-10% Na.sub.2 O, 2-13% K.sub.2 O, 7-15% Li.sub.2 O+Na.sub.2 O+K.sub.2 O, 1-9% ZrO.sub.2, 0-5% TiO.sub.2, 0-1% Sb.sub.2 O.sub.3, and 0-1% As.sub.2 O.sub.3, each of said substrate glasses having a strain point of at least 570.degree. C., a coefficient of thermal expansion of 75 to 95.times.10.sup.-7 /.degree. C., and a volume resistivity of at least 10.sup.10 .OMEGA. cm at 150.degree. C., and a liquids temperature of 1050.degree. C. or less.