Strengthened laminated glass structures
AssigneeCorning Incorporated
InventorsKiat Chyai Kang, Sue Camille Lewis, Govindarajan Natarajan, Yu Xiao, Chunhe Zhang
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Abstract
A laminated glass structure comprising a non-glass substrate and a glass sheet bonded to the non-glass substrate to form the laminated glass structure, wherein the laminated glass structure withstands a ball drop test wherein a 535 g stainless steel ball is dropped from a height of 0.8 m onto the laminated glass structure, with the glass sheet being impacted by the ball. The glass sheet has a thickness such that the glass sheet exhibits, without cracking, deformation to adapt to any shape change of the non-glass substrate as imparted by the ball of the ball drop test.
Claims12
A laminated glass structure comprising:
- a non-glass substrate having a thickness of from 0.1 mm to 5 mm;
- and
- a glass sheet bonded to the non-glass substrate while the non-glass substrate is thermally expanded relative to the glass sheet and then controllably cooled to form the laminated glass structure, wherein the laminated glass structure withstands a ball drop test wherein a 535 g stainless steel ball is dropped from a height of 0.8 m onto the laminated glass structure, with the glass sheet being impacted by the ball;
- wherein the glass sheet has a thickness such that the glass sheet exhibits, without cracking, deformation to adapt to any shape change of the non-glass substrate as imparted by the ball of the ball drop test;
- wherein the glass sheet comprises a compressive stress of at least about 30 MPa across a thickness of the glass sheet due to a coefficient of thermal expansion (CTE) mismatch between the non-glass substrate and the glass sheet, the CTE of the non-glass substrate being more than two times a CTE of the glass sheet.
A laminated glass structure comprising:
- a glass sheet having a thickness of no more than about 300 μm;
- and
- a metal substrate having a thickness of no more than 5 mm laminated to a surface of the glass sheet while the metal substrate is thermally expanded relative to the glass sheet and then controllably cooled, so as to achieve a compressive stress of at least about 30 MPa across the thickness of the glass sheet due to a coefficient of thermal expansion (CTE) mismatch between the glass sheet and the metal substrate, the CTE of the metal substrate being more than two times a CTE of the glass sheet.
Dependencies are inferred from the claim text.