Pre-fractured glass composites and laminates with impact resistance and methods of making the same
AssigneeCorning Incorporated
InventorsMatthew John Dejneka, Zhongzhi Tang
Life of this patent
Estimating the term…
Abstract
A pre-fractured glass laminate that includes: a glass substrate comprising a thickness, a pair of opposed primary surfaces, a compressive stress region, a central tension (CT) region and a plurality of cracks; a second phase comprising a polymer or a cured resin within the plurality of cracks; a backing layer; and an interlayer disposed between one of the primary surfaces of the substrate and the backing layer. The compressive stress region extends from each of the primary surfaces to a first selected depth in the substrate. Further, the plurality of cracks is located in the CT region.
Claims17
1 A pre-fractured glass composite, comprising:
- a glass substrate comprising a thickness, a pair of opposed primary surfaces, a compressive stress region, a central tension (CT) region and a plurality of cracks;
- and
- a second phase comprising a polymer or a cured resin within the plurality of cracks,
- wherein the compressive stress region extends from each of the primary surfaces to a first selected depth in the substrate, and
- further wherein the plurality of cracks is located in the CT region, and a majority of the plurality of cracks do not extend to the primary surfaces of the glass substrate.
The composite according to claim 1, wherein a substantial portion of the plurality of cracks is devoid of air pockets.
The composite according to claim 1, wherein the polymer or the cured resin is characterized by a refractive index within 10% of a refractive index of the glass substrate.
The composite according to claim 1, wherein the composite is characterized by an average impact speed of greater than 400 mm/s prior to failure in a 110 Degree Diamond Dynamic Impact Test.
The composite according to claim 1, wherein the plurality of cracks further comprises an average fragment size that is less than 5× the thickness of the glass substrate.
The composite according to claim 1, wherein the plurality of cracks defines a plurality of fragments, and further wherein the plurality of fragments comprises an average aspect ratio of 4 or less.
The composite according to claim 1, wherein the compressive stress region and the first selected depth are defined by an ion exchange or a thermal tempering process.
A pre-fractured glass laminate, comprising:
- a pre-fractured glass composite according to claim 1;
- a backing layer;
- and
- an interlayer disposed between one of the primary surfaces of the substrate and the backing layer.
A consumer electronic product, comprising:
- a housing comprising front, back and side surfaces;
- electrical components that are at least partially inside the housing;
- and
- a display at or adjacent to the front surface of the housing,
- wherein the composite of claim 1 is at least one of disposed over the display and disposed as a portion of the housing.
A vehicle interior system comprising:
- a base comprising a display, and a pre-fractured composite,
- wherein the display comprises display elements and the pre-fractured composite is disposed over the display elements, and
- wherein the composite of claim 1 is at least one of disposed over the display and disposed as a portion of the housing.
Dependencies are inferred from the claim text.