US 11,932,574 B2
Lithium containing glasses
Timothy Michael Gross, Corning, NY (US); Xiaoju Guo, Pittsford, NY (US); and Charlene Marie Smith, Corning, NY (US)
Assigned to CORNING INCORPORATED, Corning, NY (US)
Filed by CORNING INCORPORATED, Corning, NY (US)
Filed on Jul. 13, 2021, as Appl. No. 17/374,279.
Application 17/374,279 is a division of application No. 15/799,122, filed on Oct. 31, 2017, granted, now 11,111,173.
Claims priority of provisional application 62/418,367, filed on Nov. 7, 2016.
Claims priority of provisional application 62/452,004, filed on Jan. 30, 2017.
Claims priority of provisional application 62/565,190, filed on Sep. 29, 2017.
Prior Publication US 2021/0340055 A1, Nov. 4, 2021
Int. Cl. C03C 3/085 (2006.01); C03C 3/091 (2006.01); C03C 3/097 (2006.01); C03C 21/00 (2006.01); H05K 5/00 (2006.01); H05K 5/03 (2006.01); G02F 1/1333 (2006.01)
CPC C03C 3/091 (2013.01) [C03C 3/085 (2013.01); C03C 3/097 (2013.01); C03C 21/002 (2013.01); H05K 5/0017 (2013.01); H05K 5/03 (2013.01); G02F 1/133331 (2021.01)] 19 Claims
 
1. A glass article comprising:
from greater than or equal to 5 mol % to less than or equal to 11 mol % Li2O;
from greater than or equal to 60 mol % to less than or equal to 74 mol % SiO2;
from greater than or equal to 7 mol % to less than or equal to 18 mol % Al2O3; and
a liquidus viscosity of less than or equal to 300 kP,
wherein RIannealed−RIas formed is greater than or equal to 0.0003, where RIannealed is a refractive index at a wavelength of 589 nm of the glass heated at the annealing point of the glass for 1 hour and RIas formed is a refractive index at a wavelength of 589 nm of the glass as formed, and an annealing point of the glass is greater than or equal to 580° C. and less than or equal to 675° C.