公开(公告)号：WO2022125846A1

公开(公告)日：2022-06-16

申请号：PCT/US2021/062727

申请日：2021-12-10

Applicant: CORNING INCORPORATED [US]/[US]

Inventor： FAHEY, Albert Joseph ,  HART, Shandon Dee ,  KOCH III, Karl William ,  KOSIK WILLIAMS, Carlo Anthony ,  LIN, Lin ,  MAYOLET, Alexandre Michel ,  OUYANG, Xu ,  PAULSON, Charles Andrew ,  PRICE, James Joseph

IPC: C03C17/34 ,  G02B1/14 ,  G02B1/115

Abstract: A cover glass article is described herein that includes: a substrate comprising an outer primary surface with an outer optical film structure disposed thereon and an inner primary surface with an inner optical film structure disposed thereon. The outer film structure comprises a first plurality of alternating high index and low index layers with an outermost low index layer. The inner film structure comprises a second plurality of alternating high index and low index layers with a low or high index layer disposed on the inner primary surface, and an innermost low or high index layer. Each high index layer of the first and the second plurality comprises a nitride or an oxynitride, and an oxide or a nitride, respectively. Further, the cover glass article exhibits an average photopic transmittance of greater than 95% and a maximum hardness of greater than 10 GPa.