公开(公告)号：US20130345041A1

公开(公告)日：2013-12-26

申请号：US14015495

申请日：2013-08-30

Applicant: AvanStrate Inc.

Inventor： Akihiro KOYAMA ,  Mikiko HASHIMOTO

IPC: C03C3/091

CPC classification number: C03C3/091

Abstract: Provided is a glass composition suitable for a glass substrate for a flat panel display such as a liquid crystal display. This glass composition has high thermal stability, and is substantially free of BaO but has a low devitrification temperature. It is suitable for the production of a glass substrate by a downdraw process. This glass composition contains, in terms of mass %: 54 to 62% of SiO2; 4 to 11% of B2O3; 15 to 20% of Al2O3; 2 to 5% of MgO; 0 to 7% of CaO; 0 to 13.5% of SrO; 0 to 1% of K2O; 0 to 1% of SnO2; and 0 to 0.2% of Fe2O3, and is substantially free of BaO. In this glass composition, the total content of alkaline earth metal oxides (MgO+CaO+SrO) is 10 to 18.5 mass %. The devitrification temperature of the glass composition is 1200° C. or lower.

Abstract translation: 提供一种适用于液晶显示器等平板显示器的玻璃基板的玻璃组合物。 该玻璃组合物具有高的热稳定性，并且基本上不含BaO但具有低失透温度。 适用于通过下拉工艺生产玻璃基板。 该玻璃组合物以质量％计含有54〜62％的SiO 2， 4〜11％的B2O3; 15〜20％的Al2O3; 2〜5％的MgO; 0〜7％的CaO; 0〜13.5％的SrO; 0〜1％K2O; 0〜1％的SnO2; 和0〜0.2％的Fe 2 O 3，并且基本上不含BaO。 在该玻璃组合物中，碱土类金属氧化物（MgO + CaO + SrO）的总含量为10〜18.5质量％。 玻璃组合物的失透温度为1200℃以下。