Low-density glass for flat panel display substrates

Details Low-density glass for flat panel display substrates Low-density glass for flat panel display substrates

2006-01-31

2006-01-31

Group, Karl (Department: 1755)

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

C501S069000, C501S070000, C501S067000

Reexamination Certificate

active

06992030

ABSTRACT:
Disclosed is a glass material essentially free of BaO and alkali oxide particularly suitable for the glass substrate of LCDs. The glass material consists essentially, expressed in mole percent on an oxide basis, of 70–80%, preferably 72–77% of SiO2, 3–9%, preferably 4–7% of Al2O3, 8–18%, preferably 10–16% B2O3, 3–10%, preferably 3–8% of CaO, 0–4%, preferably 0–3% RO, 0–0.2%, preferably 0–0.1% SnO, 0–1%, preferably 0 to 0.5% of XO, where RO represents, collectively, MgO, SrO and ZnO, XO represents, collectively, TiO2, ZrO2, Y2O3and La2O3. The glass has a strain point in the range of over about 600° C., a coefficient of thermal expansion (CTE) in the range of about 23–35×10−7/° C., a density lower than about 2.35 g/cm3, a liquidus temperature lower than or equal to about 1200° C. and a durability in BHF less than or equal to 0.5 mg/cm2weight loss.

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Patent Abstracts of Japan, vol. 2000, No. 23, Feb. 10, 2001, JP 2001 15134A (Nippon Electric Glass Co. Ltd.) Jun. 5, 2001, abstract.

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