Invention Grant
- Patent Title: Method for localized annealing of chemically strengthened glass
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Application No.: US14913890Application Date: 2014-08-21
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Publication No.: US09908805B2Publication Date: 2018-03-06
- Inventor: Thomas Michael Cleary , Mark Stephen Friske , Robert Stephen Wagner
- Applicant: CORNING INCORPORATED
- Applicant Address: US NY Corning
- Assignee: CORNING INCORPORATED
- Current Assignee: CORNING INCORPORATED
- Current Assignee Address: US NY Corning
- Agent F. Brock Riggs
- International Application: PCT/US2014/052037 WO 20140821
- International Announcement: WO2015/031151 WO 20150305
- Main IPC: C03B25/08
- IPC: C03B25/08 ; B32B17/10 ; C03C23/00 ; C03C21/00

Abstract:
A method of providing locally annealed regions for a glass article comprising: (a) providing a strengthened glass article having a first surface compressive stress and a first depth of layer of compressive stress; (b) targeting first portions of the glass article on a first side thereof; (c) annealing the targeted first portions to a second surface compressive stress and a second depth of layer of compressive stress; and (d) repeating steps (b) and (c) to create a pattern of annealed portions of the glass article on the first side thereof. Targeted annealing can be done e.g. by focusing a laser or using microwave energy or an induction source. A method for making a laminate structure comprising a first glass layer (12), a second glass layer (16), and at least one polymer interlayer (14) intermediate the first and second glass layers. The first glass layer (12) can be comprised of a strengthened glass having a first portion with a first surface compressive stress and a first depth of layer of compressive stress and a second portion with a second surface compressive stress and a second depth of layer of compressive stress. In other embodiments, the second glass layer (16) can be comprised of a strengthened glass having a third portion with a third surface compressive stress and a third depth of layer of compressive stress and a fourth portion with a fourth surface compressive stress and a fourth depth of layer of compressive stress.
Public/Granted literature
- US20160207820A1 METHOD FOR LOCALIZED ANNEALING OF CHEMICALLY STRENGTHENED GLASS Public/Granted day:2016-07-21
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