| 摘要 |
PROBLEM TO BE SOLVED: To provide a glass composition suitable for a glass substrate having an appropriate coefficient of thermal expansion, a low melting point, a high distortion point, and high heat resistance, for example, a substrate for an electronic display, such as PDP (plasma display panel). SOLUTION: A substrate glass for a display device comprises, by weight, 57-62% SiO<SB>2</SB>, 4-7% Al<SB>2</SB>O<SB>3</SB>, 2-5% ZrO<SB>2</SB>, 2-6 Na<SB>2</SB>O, 4-9% K<SB>2</SB>O, 0-4% MgO, 4-9% CaO, 6-9% SrO, 6-14% BaO, and 0.1-1.0% HfO<SB>2</SB>, with the proviso that the total amount of Na<SB>2</SB>O and K<SB>2</SB>O is 9-14% and the total amount of MgO, CaO, SrO, and BaO is 17-25%, and has an average coefficient of linear thermal expansion of 80-87(×10<SP>-7</SP>/°C) within a range of 30-300°C and a distortion point of 560-580°C. COPYRIGHT: (C)2008,JPO&INPIT
|
