Methods for strengthening the edge of laminated glass articles and laminated glass articles formed therefrom

Abstract

A method for strengthening an edge of a glass laminate including a glass core layer positioned between a first glass clad layer and a second glass clad layer may include forming a channel in the edge of the glass laminate. Sidewalls of the channel may be formed from the first glass clad layer and the second glass clad layer. Glass filler material having a filler coefficient of thermal expansion greater than a core coefficient of thermal expansion may be positioned in the channel. The glass filler material and the sidewalls of the channel may be fused to the second glass clad layer thereby forming an edge cap over the channel. The edge of the glass laminate is under compressive stress after the glass filler material is enclosed in the channel.

Description

[0001] This application claims priority from U.S. Patent Application No. 62 / 072665 filed on October 30, 2014, the entire content of which is incorporated herein by reference. [0002] background Technical field [0003] This specification generally relates to laminated glass products, and more specifically, to a method for strengthening the edges of laminated glass products and laminated glass products formed by the method. Background technique [0004] Glass products, such as cover glass, glass backplanes, and similar products, are also used in consumer and commercial electronic devices, such as LCD and LED displays, computer monitors, automated teller machines (ATM), and the like. Some of these glass products may include "touch" functions, which necessitate contact with various objects, including the user's fingers and / or stylus device, so that the glass must be strong enough to withstand frequent contact without being damaged. In addition, these glass products can also be incorp...

AI Technical Summary

Problems solved by technology

Exposed core layers, which may be under tension, can make the laminated glazing susceptible to failure from damage events on the edges of the laminated glazing

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