US 12,187,638 B2
Ultrathin glass with special chamfer shape and high strength
Ning Da, Jiangsu (CN); and Feng He, Jiangsu (CN)
Assigned to SCHOTT GLASS TECHNOLOGIES (SUZHOU) CO. LTD., Jiangsu (CN)
Filed by SCHOTT Glass Technologies (Suzhou) Co. Ltd., Jiangsu (CN)
Filed on Nov. 13, 2020, as Appl. No. 17/098,121.
Application 17/098,121 is a continuation of application No. PCT/CN2018/086879, filed on May 15, 2018.
Prior Publication US 2021/0078899 A1, Mar. 18, 2021
Int. Cl. C03C 21/00 (2006.01); C03C 17/22 (2006.01); C03C 17/28 (2006.01)
CPC C03C 21/002 (2013.01) [C03C 17/22 (2013.01); C03C 17/28 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A chemically toughened glass article, comprising:
a thickness (t) of less than 0.2 mm;
a first surface;
a second surface;
a compressive stress region defined by a compressive stress (CS) of at least 100 MPa;
an edge connecting the first surface and the second surface; and
a bending strength (BS) of greater than 700 MPa,
wherein the edge has a chamfer with a chamfer width (A) and a chamfer height (B),
wherein the chamfer has a first ratio of chamfer width to chamfer height (A/B) of between 1.5 to 20, and
wherein the chamfer has a second ratio of chamfer width to glass thickness (A/t) of greater than 0.7.