摘要：
一種玻璃,其熱膨脹係數為40-50�10^-7/℃,且具有適於穩定地製造薄板、大型玻璃基板的黏度特性,且適於TFT-LCD,尤其是適於非晶矽(a-Si)TFT-LCD。本發明的無鹼玻璃的特徵在於,以重量百分比(wt%)計的玻璃組成中,SiO2的含量為45-65%、Al2O3為12-17%、B2O3為7.5-15%、MgO為0-3%、CaO為5.5-15%、SrO為0-5%、BaO為5-15%、ZnO為0-5%、MgO+CaO+SrO+BaO+ZnO為15-23%、ZrO2為0-5%、TiO2為0-5%、P2O5為0-5%,實質上不含有鹼金屬氧化物,以重量分率而計(CaO+BaO-MgO)/SiO2的値為0.25-0.4,且30-380℃的溫度範圍內的平均熱膨脹係數為40-50�10^-7/℃。
摘要（中）：
一种玻璃,其热膨胀系数为40-50�10^-7/℃,且具有适于稳定地制造薄板、大型玻璃基板的黏度特性,且适于TFT-LCD,尤其是适于非晶硅(a-Si)TFT-LCD。本发明的无碱玻璃的特征在于,以重量百分比(wt%)计的玻璃组成中,SiO2的含量为45-65%、Al2O3为12-17%、B2O3为7.5-15%、MgO为0-3%、CaO为5.5-15%、SrO为0-5%、BaO为5-15%、ZnO为0-5%、MgO+CaO+SrO+BaO+ZnO为15-23%、ZrO2为0-5%、TiO2为0-5%、P2O5为0-5%,实质上不含有碱金属氧化物,以重量分率而计(CaO+BaO-MgO)/SiO2的値为0.25-0.4,且30-380℃的温度范围内的平均热膨胀系数为40-50�10^-7/℃。
摘要（英）：
The present invention provides a glass, which has a coefficient of thermal expansion about 40 to 50*10-7/ DEG C and a viscosity character which is suitable for stably fabricating thin and large glass substrates. Moreover, the glass is suitable for TFT LCD and particularly for an amorphous silicon type TFT LCD. An alkali free glass is characterized in that it has a composition as follows(the percentage being in weight percentage), 45 to 65% SiO2, 12 to 17% Al2O3, 7.5 to 15% B2O3, 0 to 3% MgO, 5.5 to 15% CaO, 0 to 5% SrO, 5 to 15% BaO, 0 to 5% ZnO, 15 to 23% MgO+CaO+SrO+BaO+ZnO, 0 to 5% ZrO2, 0 to 5% TiO2, 0 to 5% P2O5. The alkali free glass is also characterized in that it is substantially alkali metal oxide-free; a value of (CaO+BaO-MgO)/SiO2 in the alkali free glass is 0.25 to 0.4 by weight fraction; and an average coefficient of thermal expansion of the alkali free glass is 40 to 50*10-7/ DEG C in the temperature range of 30 to 380 DEG C.
