公开(公告)号：US20190276356A1

公开(公告)日：2019-09-12

申请号：US16463692

申请日：2017-11-29

Applicant: CORNING INCORPORATED

Inventor： John Steele Abbott ,  Douglas Clippinger Allan ,  John Martin Darfin ,  Sumalee Likitvanichkul Fagan ,  David Lee Weidman ,  David Inscho Wilcox

IPC: C03C21/00 ,  C03C15/00

Abstract: Strengthened glass substrates and methods of reducing warp in strengthened glass substrates having 3D and 2.5D shapes are disclosed. In one embodiment, a strengthened glass-based article includes a first surface, a second surface opposite the first surface, and an edge between the first surface and the second surface. The edge is asymmetric with respect to a plane that is located at an average depth of the strengthened glass-based article and is parallel to the first surface and the second surface. The strengthened glass-based article has an expected warp WE based at least in part on a shape of the asymmetric edge of the strengthened glass-based article. An actual warp WA of the strengthened glass-based article is less than 85% of the expected warp metric WE of the strengthened glass-based article. The actual warp WA of the strengthened glass-based article is measured with a concave surface facing up.