High liquidus viscosity glasses for flat panel displays

Details High liquidus viscosity glasses for flat panel displays High liquidus viscosity glasses for flat panel displays

C - Chemistry, Metallurgy

03

C

C03C 3/076 (2006.01) C03C 3/091 (2006.01) C03C 3/097 (2006.01) G02F 1/136 (2006.01) G02F 1/1333 (2006.01)

Patent

CA 2113505

This invention is related to glasses for use as substrates in flat panel display devices: more specifically, for use as substrates in LCDs which utilize polycrystalline silicon thin film transistors. The compositions for the inventive glasses are essentially free from alkali metal oxides and consist essentially, in mole percent, of SiO2 64-70 Y2O3 0-5 Al2O3 9.5-14 MgO 0-5 B2O3 5-10 CaO 3-13 TiO2 0-5 SrO 0-5.5 Ta2O5 0-5 BaO 2-7 Nb2O5 0-5 MgO+CaO+SrO+BaO 10-20 .

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