Thermally strengthened consumer electronic glass and related systems and methods
AssigneeCorning Incorporated
InventorsPeter Joseph Lezzi, Richard Orr Maschmeyer, John Christopher Thomas, Kevin Lee Wasson
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Abstract
A strengthened cover glass or glass-ceramic sheet or article as well as processes and systems for making the strengthened glass or glass-ceramic sheet or article is provided for use in consumer electronic devices. The process comprises cooling the cover glass sheet by non-contact thermal conduction for sufficiently long to fix a surface compression and central tension of the sheet. The process results in thermally strengthened cover glass sheets for use in or on consumer electronic products.
Claims18
A consumer electronic product comprising:
- an electronic display comprising a front surface, a back surface, and at least one side surface;
- a glass-based layer comprising a first major surface opposite a second major surface with an interior region located therebetween;
- wherein the glass-based layer is provided at least partially over the electronic display;
- wherein an average thickness between the first and second major surfaces of the glass-based layer is less than 2 mm;
- wherein an ion content and chemical constituency of at least a portion of both the first major surface and the second major surface of the glass-based layer is the same as an ion content and chemical constituency of at least a portion of the interior region of the glass-based layer;
- wherein the first and second major surfaces of the glass-based layer are under compressive stress greater than 150 MPa and the interior region of the glass-based layer is under tensile stress;
- wherein a surface roughness of the first major surface of the glass-based layer is between 0.2 and 1.5 nm Ra roughness.
A consumer electronic product comprising:
- a housing having a front surface, a back surface, and at least one side surface;
- electrical components provided at least partially internal to the housing, the electrical components comprise at least a controller, a memory, and a display;
- the back surface comprising a glass-based layer comprising a first major surface opposite a second major surface with an interior region located therebetween;
- wherein an average thickness between the first and second major surfaces of the glass-based layer is less than 2 mm;
- wherein an ion content and chemical constituency of at least a portion of both the first major surface and the second major surface of the glass-based layer is the same as an ion content and chemical constituency of at least a portion of the interior region of the glass-based layer
- wherein the first and second major surfaces of the cover glass are under compressive stress greater than 150 MPa and the interior region of the cover glass is under tensile stress;
- wherein a surface roughness of the first major surface of the cover glass is between 0.2 and 1.5 nm Ra roughness.
Dependencies are inferred from the claim text.