Methods for forming curved glass articles
AssigneeCorning Incorporated
InventorsJeffrey Michael Benjamin, Jeffrey John Domey, Peter Knowles, Khaled Layouni, Christopher Mark Schweiger, Christopher Lee Timmons, Arlin Lee Weikel
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Abstract
Embodiments of a method of cold-forming a glass article are disclosed. In one or more embodiments, the method includes bending a glass sheet over the chuck such that a first major surface of the glass sheets conforms to a bending surface of the chuck. In one or more embodiments, the method includes adhering a frame to the second major surface of the glass sheet such that at least one spacer is positioned between the glass sheet and the frame.
Claims31
A method of cold-forming a glass article, comprising the steps of:
- bending a glass sheet comprising a first major surface and a second major surface opposite the first major surface over a bending surface of a chuck such that the first major surface of the glass sheet conforms to the bending surface of the chuck and comprises a first region having a first radius of curvature;
- disposing a frame having a curved surface comprising a second region with a second radius of curvature on the second major surface, the second radius of curvature matching is within 10% of the first radius of curvature;
- positioning at least one spacer in the first region of the glass sheet article or in the second region on the curved surface of the frame;
- and
- adhering the curved surface of the frame to the second major surface of the glass sheet article such that the spacer is provided between the glass sheet article and the frame.
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A method of cold-forming a glass article, comprising the steps of:
- bending a glass sheet over a bending surface, wherein the bending surface comprises a first region with a first radius of curvature, wherein the glass sheet comprises a first major surface and a second major surface opposite to the first major surface, and wherein bending the glass sheet causes the first major surface to conform to first radius of curvature of the bending surface;
- applying an adhesive to the second major surface of the glass sheet or to the curved surface of the frame and curing the adhesive for a first cure time;
- disposing a frame having a curved surface comprising a second region with a second radius of curvature on the adhesive, the second radius of curvature is within 10% of the first radius of curvature;
- adhering the curved surface of the frame to the second major surface of the glass sheet using the adhesive;
- and
- curing at least a portion of the adhesive for a second cure time using an accelerant, the second cure time being less than half the first cure time.
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A glass article, comprising:
- a glass sheet comprising a first major surface and a second major surface opposite to the first major surface comprising a radius of curvature of 10,000 mm or less;
- a frame adhered to the second major surface of the glass sheet using an adhesive, the frame comprising a curved surface comprising a radius of curvature that is within 10% of the radius of curvature of the glass sheet, and comprising a bezel at least partially around a perimeter of the glass sheet, the bezel having a width of 10 mm or less;
- at least one mechanical retainer attached to the glass sheet and to the frame, the at least one mechanical retainer configured to apply a compressive stress to the first major surface of the glass sheet;
- wherein the adhesive comprises a tensile strength;
- wherein tensile stress is present in the adhesive from holding the glass sheet at the radius of curvature;
- and
- wherein the compressive stress from the at least one mechanical retainer maintains a ratio of the tensile strength to the tensile stress of at least 3.0 over a range of temperatures of from −40° C. to 95° C.
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Dependencies are inferred from the claim text.