DAMAGE-RESISTANT GLASS ARTICLES AND METHOD

摘要

A strengthened glass article has opposing first and second compressively stressed surface portions bound to a tensilely stressed core portion, with the first surface portion having a higher level of compressive surface stress than the second surface portion for improved resistance to surface damage, the compressively stressed surface portions being provided by lamination, ion-exchange, thermal tempering, or combinations thereof to control the stress profiles and limit the fracture energies of the articles.

主权项

1. A glass article comprising:
a glass core layer; first and second glass surface layers fused to the glass core layer to form a laminated article, each of the first and second glass surface layers having a lower thermal expansion than the glass core layer; and a stress profile resulting at least partially from subjecting the laminated article to an ion-exchange treatment.