Methods of cutting a laminate strengthened glass substrate
Methods of cutting laminate strengthened glass substrates are disclosed. A method is disclosed which includes providing a laminate strengthened glass substrate having a glass core layer with first and second surface portions, and at least one glass cladding layer fused to the first surface portion or the second surface portion of the glass core layer. The glass core layer has a core coefficient of thermal expansion that is larger than a cladding coefficient of thermal expansion. The method further includes forming an edge defect on the laminate strengthened glass substrate, heating first and second regions of the laminate strengthened glass substrate on the at least one glass cladding layer. The first and second regions are offset from first and second sides of a desired line of separation, respectively. The method further includes propagating a crack imitated at the edge defect between the first and second regions.
Corning Incorporated
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Gaozhu Xinghua Rui
Peng Li Zhang