公开(公告)号：US20220064062A1

公开(公告)日：2022-03-03

申请号：US17412471

申请日：2021-08-26

申请人： CORNING INCORPORATED

发明人： Jonas Bankaitis ,  Alejandro Antonio Becker ,  Bradley Frederick Bowden ,  Yuvanash Kasinathan ,  Albert Roth Nieber ,  Garrett Andrew Piech ,  Sergio Tsuda ,  Kristopher Allen Wieland

IPC分类号： C03C23/00 ,  G11B5/73 ,  C03C17/00

摘要： Glass articles with protective films used for processing hard disk drive substrates and methods of forming glass articles with protective films used for processing hard disk drive substrates are provided herein. In one embodiment, a glass blank includes: a first surface, a second surface opposing the first surface, and an edge surface connecting the first surface and the second surface; wherein the first surface comprises a first coated portion and a first uncoated portion surrounding the first coated portion, wherein the first uncoated portion extends a first distance radially inward from the edge toward a center of the first surface, wherein the second surface comprises a second coated portion and a second uncoated portion surrounding the second coated portion, wherein the second uncoated portion extends a second distance radially inward from the edge toward a center of the second surface.

公开(公告)号：US20240174545A1

公开(公告)日：2024-05-30

申请号：US18505608

申请日：2023-11-09

申请人： CORNING INCORPORATED

发明人： Yuvanash Kasinathan ,  Ralf Joachim Terbrueggen

IPC分类号： C03B33/033 ,  C03B33/02

CPC分类号： C03B33/033 ,  C03B33/0222

摘要： The disclosure relates to a method of laser processing a glass material, including: applying a layer of water to a top surface of a substrate support surface; positioning the glass material onto the substrate support surface, wherein the glass material comprises: a first surface, a second surface opposing the first surface, a plurality of perforations formed within the glass material along a cutting line, wherein the plurality of perforations extends through a thickness of the material from the first surface to the second surface, wherein the water enters into the plurality of perforations via capillary action; and applying a laser to the glass material at the cutting line to expand the water within the plurality of perforations to separate the material.