GLASS ARTICLES HAVING FILMS WITH MODERATE ADHESION, RETAINED STRENGTH AND OPTICAL TRANSMITTANCE

摘要

One or more aspects relate to an article that includes a glass substrate having a first average strain-to-failure; and a crack mitigating layer disposed on a first major surface of the substrate forming a first interface. The article also includes a film disposed on the crack mitigating layer forming a second interface and having a second average strain-to-failure that is less than the first average strain-to-failure. Further, at least one of the first and second interfaces exhibits a moderate adhesion such that at least a portion of the crack mitigating layer experiences one or more of a cohesive failure and an adhesive failure at the interfaces when the article is strained to a strain level between the first average strain-to-failure and the second average strain-to-failure. In addition, the refractive index of the crack mitigating layer is between or the same as the refractive indices of the substrate and the film.

主权项

1. An article, comprising:
a glass substrate having opposing major surfaces; a crack mitigating layer disposed on a first major surface; and a film disposed on the crack mitigating layer, wherein the crack mitigating layer is characterized by an elastic modulus of about 20 GPa or less, and further wherein the refractive index of the crack mitigating layer is greater than or equal to the refractive index of the substrate and less than or equal to the refractive index of the film.