| 摘要 |
PROBLEM TO BE SOLVED: To provide a glass substrate for a flat panel display device, which has a high strain point and a high volume resistivity and is excellent in crack resistance and resistance to thermal shock. SOLUTION: The glass substrate for the flat panel display device contains, by mass, 55-75% SiO<SB>2</SB>, 3-14% Al<SB>2</SB>O<SB>3</SB>, 1-15% MgO, 0-8% CaO, 1-15% SrO, 0-7% BaO, 0.01-5% Na<SB>2</SB>O, 4-12% K<SB>2</SB>O and 0-7% ZrO<SB>2</SB>, with the proviso that the total amount of MgO, CaO, SrO, and BaO is 12-27%, the total amount of Na<SB>2</SB>O and K<SB>2</SB>O is≥6 and <14%, and the mass ratio of K<SB>2</SB>O to Na<SB>2</SB>O is≥2, and has a coefficient of thermal expansion of 65-75×10<SP>-7</SP>/°C. COPYRIGHT: (C)2004,JPO
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