US 11,655,178 B2
Methods and apparatus for manufacturing a glass-based article
Sumalee Likitvanichkul Fagan, Painted Post, NY (US); Jason Thomas Harris, Horseheads, NY (US); Jean Philippe Michel Peraud, Seattle, WA (US); and Rohit Rai, Painted Post, NY (US)
Assigned to Corning Incorporated, Corning, NY (US)
Filed by CORNING INCORPORATED, Corning, NY (US)
Filed on Jun. 26, 2020, as Appl. No. 16/913,709.
Claims priority of provisional application 62/868,244, filed on Jun. 28, 2019.
Prior Publication US 2020/0407260 A1, Dec. 31, 2020
Int. Cl. C03C 21/00 (2006.01); C03C 15/00 (2006.01); C03B 23/023 (2006.01)
CPC C03B 23/023 (2013.01) [C03C 15/00 (2013.01); C03C 21/002 (2013.01); C03C 2218/33 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A glass-based article comprising:
a first major surface comprising a first length and a first width perpendicular to the first length;
a first compressive stress region extending to a first depth of compression from the first major surface;
a second major surface parallel to the first major surface, the second major surface comprising a second length greater than the first length, and a second width, perpendicular to the second length, greater than the first width, the second major surface comprising a first surface portion, a first edge surface portion recessed from the first surface portion, and a second edge surface portion recessed from the first surface portion, the first edge surface portion extending along the second length on a first side of the first surface portion, the second edge surface portion extending along the second length on a second side of the first surface portion, wherein the first major surface extends within a first plane, the first surface portion extends within a second plane, and the first edge surface portion extends within a third plane that is substantially parallel to the second plane and positioned between the first plane and the second plane; and
a second compressive stress region extending to a second depth of compression from the first surface portion wherein the second depth of compression at the first surface portion is greater than a depth of compression at the first edge surface portion.
 
6. A glass-based article comprising:
a first major surface comprising a first length and a first width perpendicular to the first length;
a first compressive stress region extending to a first depth of compression from the first major surface;
a second major surface parallel to the first major surface, the second major surface comprising a second length greater than the first length, the second length a maximum length of the glass-based article, and a second width, perpendicular to the second length, greater than the first width, the second major surface comprising a first surface portion, a first edge surface portion recessed from the first surface portion, and a second edge surface portion recessed from the first surface portion, the first edge surface portion extending along the second length on a first side of the first surface portion, the second edge surface portion extending along the second length on a second side of the first surface portion, wherein the first major surface extends within a first plane, the first surface portion extends within a second plane, and the first edge surface portion is substantially planar and lying within a plane that is angled relative to the first plane and the second plane, the first edge surface portion extending from the first surface portion to an edge of the glass-based article, the first edge surface portion extending linearly along an axis along the second length; and
a second compressive stress region extending to a second depth of compression from the first surface portion;
wherein the second depth of compression at the first surface portion is greater than a depth of compression at the first edge surface portion.