公开(公告)号：US20240417320A1

公开(公告)日：2024-12-19

申请号：US18706426

申请日：2022-10-26

Applicant: CORNING INCORPORATED

Inventor： ROBERT ALAN BELLMAN ,  YUHUI JIN ,  PETER JOSEPH LEZZI ,  CHUANCHE WANG

IPC: C03C17/245 ,  C03C15/00 ,  C03C17/22 ,  C03C21/00 ,  C23C14/00 ,  C23C14/06 ,  C23C14/08 ,  C23C14/34 ,  C23C14/58 ,  C23C16/32 ,  C23C16/50 ,  C23C16/56

Abstract: Foldable substrates comprise a first portion, a second portion, and a central portion positioned therebetween. The central portion comprises a first central surface area recessed from a first major surface by a first distance and a second central surface area. A second major surface comprises the second central surface area. A blunted edge extends around an entire periphery of the foldable substrate. The blunted edge comprising a first blunted surface area where the blunted edge meets the first major surface and a second blunted surface area where the blunted edge meets the second major surface. Methods comprise laminating the foldable substrate with support layers before removing a peripheral portion of an initial edge of the foldable substrate to form an intermediate edge. The intermediate edge is contacted with an etchant to form the blunted edge. Methods further comprise removing the support layers from the foldable substrate.