| abstract |
The present invention relates to an aluminum oxide glass for a touch screen, wherein the glass is calculated on a weight percentage basis and consists of the following components: silicon dioxide (SiO 2 ), 55-65%; Sodium oxide (Na 2 O), greater than 12 and less than or equal to 17%; Aluminum oxide (Al 2 O 3 ), greater than 15 and up to 20%; Potassium oxide (K 2 O), 2-6%; Magnesium oxide (MgO), 3.9-10%; Zirconium oxide (ZrO 2 ), 0 to 5%; Zinc oxide (ZnO), 0 to 4%, calcium oxide (CaO), 0 to 4%, sodium oxide (Na2O) + potassium oxide (K 2 O) + magnesium oxide (MgO) + zinc oxide (ZnO) + calcium oxide (CaO), 15-28%; Tin dioxide (SnO 2 ), 0-1%; Titanium dioxide (TiO 2) + cerium oxide (CeO 2 ), ≦ 1%; And, to a chemical strengthening method comprising reinforcement 370 ℃ to 430 ℃ pre-heating temperature range and treatment time is 0.5 to 16 hours in the 100% ion-exchange of potassium nitrate salt bath (KNO 3 salt bath). The glass of the present invention can be used as a cover plate and a substrate of a touch panel. |