Patent ID: 8715829

Claim:
A glass plate for display devices, which is obtained by chemically tempering a glass plate comprising, as represented by mol % based on the following oxides, from 50 to 74% of SiO 2 , from 1 to 10% of Al 2 O 3 , from 6 to 14% of Na 2 O, from 4.0 to 15% of K 2 O, at most 15% of MgO, from 0 to 0.5% of CaO and from 0 to 5% of ZrO 2 , wherein the total content of SiO 2 and Al 2 O 3 is at most 75%, the total content of Na 2 O and K 2 O is from 12 to 25%, the total content of MgO and CaO is at most 15%, the content of MgO is at least 6.5 mass %, said glass plate is chemically tempered, and said glass plate has a thickness of 0.2 to 1.0 mm.