Invention Grant
- Patent Title: Glass-based articles having a hard film and a crack mitigating composite structure for retained article strength and scratch resistance
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Application No.: US16498908Application Date: 2018-03-23
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Publication No.: US11407681B2Publication Date: 2022-08-09
- Inventor: Robert Alan Bellman , Shandon Dee Hart , Jenny Kim , Karl William Koch, III , James Joseph Price , Hannah Shenouda
- Applicant: Corning Incorporated
- Applicant Address: US NY Corning
- Assignee: Corning Incorporated
- Current Assignee: Corning Incorporated
- Current Assignee Address: US NY Corning
- Agent William J. Tucker
- International Application: PCT/US2018/023974 WO 20180323
- International Announcement: WO2018/183105 WO 20181004
- Main IPC: B32B15/04
- IPC: B32B15/04 ; B32B17/06 ; C03C17/42 ; C03C17/00 ; C03C21/00

Abstract:
An article that includes: a glass-based substrate comprising opposing major surfaces; a crack mitigating composite over one of the major surfaces, the composite comprising an inorganic element and a polymeric element; and a hard film disposed on the crack mitigating composite comprising an elastic modulus greater than or equal to the elastic modulus of the glass-based substrate. The crack mitigating composite is characterized by an elastic modulus of greater than 30 GPa. Further, the hard film comprises at least one of a metal-containing oxide, a metal-containing oxynitride, a metal-containing nitride, a metal-containing carbide, a silicon-containing polymer, a carbon, a semiconductor, and combinations thereof.
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