Abstract: Chemically strengthened glass and a method for making utilizing differential chemistry are provided. The method includes providing a substrate having a glass chemical structure. Host alkali ions are situated in the chemical structure. The substrate has a treatment-rich volume and a treatment-poor volume located as opposed to each other in the substrate. The method also includes providing an exchange medium characterized by including a composition associated with an ion exchange rate of invading alkali ions having an average ionic radius that is larger than an average ionic radius of the host alkali ions. The method also includes providing a modified exchange medium including a modified composition associated with a modified ion exchange rate of the invading alkali ions. The method also includes applying the exchange mediums and conducting ion exchange to produce the strengthened substrate.

Abstract: Chemically strengthened glass with reduced induced curvature and a method for making utilizing a heat treatment are provided. The method includes providing a substrate, having a width, and characterized by having a glass chemical structure including host alkali ions having an average ionic radius situated in the glass chemical structure. The substrate also includes dimensional volumes including a treatment-rich volume and a treatment-poor volume located as opposed to each other in the provided substrate. The method also includes heating the provided substrate to a heat-treating temperature for a heat-treating period to produce a heat-treated substrate. The method also includes providing an exchange medium including invading alkali ions. The method also includes applying the exchange medium and conducting ion exchange to produce the strengthened substrate with reduced induced curvature.

Abstract: Chemically strengthened glass and a method for making utilizing differential chemistry are provided. The method includes providing a substrate having a glass chemical structure. Host alkali ions are situated in the chemical structure. The substrate has a treatment-rich volume and a treatment-poor volume located as opposed to each other in the substrate. The method also includes providing an exchange medium characterized by including a composition associated with an ion exchange rate of invading alkali ions having an average ionic radius that is larger than an average ionic radius of the host alkali ions. The method also includes providing a modified exchange medium including a modified composition associated with a modified ion exchange rate of the invading alkali ions. The method also includes applying the exchange mediums and conducting ion exchange to produce the strengthened substrate.

Abstract: Chemically strengthened glass and a method for making utilizing differential areal density are provided. The method includes providing a substrate having a glass chemical structure. Host alkali ions are situated in the chemical structure. The substrate has a treatment-rich volume and a treatment-poor volume located as opposed to each other in the substrate. The method also includes providing an exchange medium characterized by having an areal density, associated with an ion exchange rate, of invading alkali ions having an average ionic radius that is larger than an average ionic radius of the host alkali ions. The method also includes providing a modified exchange medium characterized by having a modified areal density, associated with a modified ion exchange rate, of the invading alkali ions. The method also includes applying the exchange mediums and conducting ion exchange to produce the strengthened substrate.

Abstract: Chemically strengthened glass and a method for making utilizing differential chemistry are provided. The method includes providing a substrate having a glass chemical structure. Host alkali ions are situated in the chemical structure. The substrate has a treatment-rich volume and a treatment-poor volume located as opposed to each other in the substrate. The method also includes providing an exchange medium characterized by including a composition associated with an ion exchange rate of invading alkali ions having an average ionic radius that is larger than an average ionic radius of the host alkali ions. The method also includes providing a modified exchange medium including a modified composition associated with a modified ion exchange rate of the invading alkali ions. The method also includes applying the exchange mediums and conducting ion exchange to produce the strengthened substrate.

Abstract: Chemically strengthened glass with high surface compression, deeper case depth, shorter processing time and a reduced induced curvature relative to that obtained in a traditional immersion method and a method for making utilizing an electric filed assist are provided. The method includes providing a substrate, characterized by having a glass chemical structure including host alkali ions having an average ionic radius situated in the glass chemical structure. The method also includes exposing the substrate to the exchange medium; and conducting ion exchange to produce a strengthened substrate while exposing the substrate to the exchange medium and applying an electric field in a plurality of cycles across the surfaces of the substrate.

Abstract: Chemically strengthened glass and a method for making utilizing differential areal density are provided. The method includes providing a substrate having a glass chemical structure. Host alkali ions are situated in the chemical structure. The substrate has a treatment-rich volume and a treatment-poor volume located as opposed to each other in the substrate. The method also includes providing an exchange medium characterized by having an areal density, associated with an ion exchange rate, of invading alkali ions having an average ionic radius that is larger than an average ionic radius of the host alkali ions. The method also includes providing a modified exchange medium characterized by having a modified areal density, associated with a modified ion exchange rate, of the invading alkali ions. The method also includes applying the exchange mediums and conducting ion exchange to produce the strengthened substrate.

Abstract: Chemically strengthened glass with reduced induced curvature and a method for making utilizing a heat treatment are provided. The method includes providing a substrate, having a width, and characterized by having a glass chemical structure including host alkali ions having an average ionic radius situated in the glass chemical structure. The substrate also includes dimensional volumes including a treatment-rich volume and a treatment-poor volume located as opposed to each other in the provided substrate. The method also includes heating the provided substrate to a heat-treating temperature for a heat-treating period to produce a heat-treated substrate. The method also includes providing an exchange medium including invading alkali ions. The method also includes applying the exchange medium and conducting ion exchange to produce the strengthened substrate with reduced induced curvature.

Abstract: Chemically strengthened glass and a method for making utilizing differential chemistry are provided. The method includes providing a substrate having a glass chemical structure. Host alkali ions are situated in the chemical structure. The substrate has a treatment-rich volume and a treatment-poor volume located as opposed to each other in the substrate. The method also includes providing an exchange medium characterized by including a composition associated with an ion exchange rate of invading alkali ions having an average ionic radius that is larger than an average ionic radius of the host alkali ions. The method also includes providing a modified exchange medium including a modified composition associated with a modified ion exchange rate of the invading alkali ions. The method also includes applying the exchange mediums and conducting ion exchange to produce the strengthened substrate.

Abstract: Chemically strengthened glass and a method for making utilizing differential time are provided. The method includes providing a substrate. The substrate includes a glass chemical structure. Host alkali ions are situated in the chemical structure. The substrate has a treatment-rich volume and a treatment-poor volume located as opposed to each other in the substrate. The method also includes providing an exchange medium including invading alkali ions having an average ionic radius that is larger than an average ionic radius of the host alkali ions. The method also includes applying the exchange medium to a surface of the treatment-rich volume for a period of time and applying the exchange medium to a surface of the treatment-poor volume for a modified period of time. The method also includes conducting ion exchange while applying the exchange medium to produce the strengthened substrate.