Articles with a low-elastic modulus layer and retained strength

An article comprising:

• a glass substrate having opposing major surfaces, wherein the glass substrate has a first average strain-to-failure that is greater than about 0.5%;
• a crack mitigating layer disposed on a first major surface of the glass substrate;
• and
• a film disposed on the crack mitigating layer,
• wherein the crack mitigating layer is configured to cause a crack originating in one of the film and the glass substrate and entering into the crack mitigating layer to remain within the crack mitigating layer
• wherein the film comprises an anti-reflection (AR) film, the AR film a layered structure comprising one or more of SiO2, TiO2 and Nb2O5, and
• wherein the crack mitigating layer has a thickness in the range from about 35 nm to about 80 nm and the film has a thickness of less than about 5 μm.

An article comprising:

• a glass substrate having opposing major surfaces and having a first average strain-to-failure;
• a crack mitigating layer disposed on a first major surface of the glass substrate forming a first interface;
• and
• a film disposed on the crack mitigating layer forming a second interface, the film having a second average strain-to-failure that is lower than the first average strain-to-failure,
• wherein a load required for a crack originating in the film to bridge across the first interface is greater than a load required for the crack to bridge across the second interface,
• wherein the film comprises an anti-reflection (AR) film, the AR film a layered structure comprising one or more of SiO2, TiO2 and Nb2O5, and
• wherein the crack mitigating layer has a thickness of less than 95 nm.

An article comprising:

• a glass substrate having opposing major surfaces and having a first average strain-to-failure;
• a crack mitigating layer disposed on a first major surface of the glass substrate forming a first interface;
• and
• a film disposed on the crack mitigating layer forming a second interface, the film having a second average strain-to-failure that is lower than the first average strain-to-failure,
• wherein a load required for a crack originating in the film to bridge across the first interface is greater than a load required for the crack to bridge across the second interface,
• wherein the film comprises an anti-reflection (AR) film, the AR film a layered structure comprising one or more of SiO2, TiO2 and Nb2O5, and
• wherein the crack mitigating layer has a thickness in the range from about 35 nm to about 80 nm and the film has a thickness of less than about 5 μm.

An article, comprising:

• a glass substrate having a thickness and opposing major surfaces including a first major surface and a second major surface;
• a crack mitigating layer disposed on and directly in contact with the first major surface of the glass substrate;
• a first film disposed on the crack mitigating layer;
• and
• a further film disposed on the second major surface of the glass substrate,
• wherein the crack mitigating layer is configured to cause a crack originating in one of the first film and the glass substrate and entering into the crack mitigating layer to remain within the crack mitigating layer,
• wherein the first film comprises an anti-reflection (AR) film, the AR film a layered structure comprising one or more of SiO2, TiO2 and Nb2O5, and
• wherein the crack mitigating layer has a thickness of less than 95 nm.

An article, comprising:

• a glass substrate having a thickness and opposing major surfaces including a first major surface and a second major surface;
• a crack mitigating layer disposed on and directly in contact with the first major surface of the glass substrate;
• a first film disposed on the crack mitigating layer;
• and
• a further film disposed on the second major surface of the glass substrate,
• wherein the crack mitigating layer is configured to cause a crack originating in one of the first film and the glass substrate and entering into the crack mitigating layer to remain within the crack mitigating layer,
• wherein the first film comprises an anti-reflection (AR) film, the AR film a layered structure comprising one or more of SiO2, TiO2 and Nb2O5, and
• wherein the crack mitigating layer has a thickness in the range from about 35 nm to about 80 nm and the first film has a thickness of less than about 5 μm.

An article comprising:

• a glass substrate having opposing major surfaces, wherein the glass substrate has a first average strain-to-failure that is greater than about 0.5%;
• a crack mitigating layer disposed on a first major surface of the glass substrate;
• and
• a film disposed on the crack mitigating layer;
• and
• wherein the crack mitigating layer is configured such that the article exhibits about the same flexural strength as exhibited by the glass substrate alone,
• wherein the film comprises an anti-reflection (AR) film, the AR film a layered structure comprising one or more of SiO2, TiO2 and Nb2O5, and
• wherein the crack mitigating layer has a thickness of less than 95 nm.