| 摘要 |
<p>Provided is a glass sheet, comprising, as a glass composition in terms of mass%, 40 to 80% of SiO 2 , 0 to 30% of Al 2 O 3 , 0 to 15% of B 2 O 3 , 0 to 25% of an alkali metal oxide (one kind or two or more kinds of Li 2 O, Na 2 O, and K 2 O), and 0 to 15% of an alkaline earth metal oxide (one kind or two or more kinds of MgO, CaO, SrO, and BaO), and being used as a viewing zone control member for covering partially or wholly a two-dimensional display.</p> |
