Glasses for display panels
AssigneeCorning Incorporated
InventorJeffrey T. Kohli
Life of this patent
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Abstract
Glasses for use as substrates for flat panel displays, having a composition consisting essentially of, as calculated in weight percent on an oxide basis, of 42-62 SiO.sub.2, 15-28 Al.sub.2 O.sub.3, 0-4 B.sub.2 O.sub.3, 3-10 Na.sub.2 O, 2-12 K.sub.2 O, 0-6 MgO, 9.5-24 CaO, 0-8 SrO, 0-16 BaO, 0-4 ZrO.sub.2 and 4-16 Li.sub.2 O+Na.sub.2 O+K.sub.2 O.
Claims24
A glass substrate for an electronic display device, wherein said substrate is comprised of a flat, transparent glass exhibiting a linear coefficient of thermal expansion over the temperature range 25.degree.-300.degree. C. between 60.degree.-90.degree..times.10.sup.-7 /.degree. C. and a strain point higher than 615.degree. C., said glass consisting essentially of, expressed in terms of weight percent on an oxide basis, 42-62 SiO.sub.2, 16.5-28 Al.sub.2 O.sub.3, 0-4 B.sub.2 O.sub.3, 3-10 Na.sub.2 O, 1-11 K.sub.2 O, 0-6 MgO, 9.5-24 CaO, 0.2-8 SrO, 0-16 BaO, 0-4 ZrO.sub.2, and Li.sub.2 O+Na.sub.2 O+K.sub.2 O in total amount of 4-16 weight percent.
A glass exhibiting a linear coefficient of thermal expansion over the temperature range 25.degree.-300.degree. C. between 60.degree.-90.degree..times.10.sup.-7 /.degree. C. and a strain point higher than 600.degree. C., said glass consisting essentially of, expressed in terms of weight percent on an oxide basis, 42-62 SiO.sub.2, 16.5-28 Al.sub.2 O.sub.3, 0-4 B.sub.2 O.sub.3, 3-10 Na.sub.2 O, 1-11 K.sub.2 O, 0-6 MgO, 9.5-24 CaO, 0.2-8 SrO, 0-16 BaO, and 0-4 ZrO.sub.2.
Dependencies are inferred from the claim text.