Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Adam J. G. Ellison0
Josef C. Lapp0
Lisa C. Chacon0
Robert Morena0
George B. Hares0
Jeffrey T. Kohli0
Date of Patent
April 29, 2008
Patent Application Number
10960594
Date Filed
October 7, 2004
Patent Primary Examiner
Patent abstract
Glasses are disclosed which are used to produce substrates in flat panel display devices. The glasses exhibit a density less than about 2.45 gm/cm3 and a liquidus viscosity greater than about 200,000 poises, the glass consisting essentially of the following composition, expressed in terms of mol percent on an oxide basis: 65–75 SiO2, 7–13 Al2O3, 5–15 B2O3, 0–3 MgO, 5–15 CaO, 0–5 SrO, and essentially free of BaO. The glasses also exhibit a strain point exceeding 650° C.
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