Edge chamfering methods
AssigneeCorning Incorporated
InventorsSasha Marjanovic, David Andrew Pastel, Garrett Andrew Piech, Jose Mario Quintal, Helmut Schillinger, Sergio Tsuda, Robert Stephen Wagner, Andrea Nicole Yeary
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Abstract
Processes of chamfering and/or beveling an edge of a glass substrate of arbitrary shape using lasers are described herein. Two general methods to produce chamfers on glass substrates are the first method involves cutting the edge with the desired chamfer shape utilizing an ultra-short pulse laser to create perforations within the glass; followed by an ion exchange.
Claims26
A method of chamfering a material comprising:
- focusing a pulsed laser beam into a laser beam focal line, viewed along the beam propagation direction;
- directing the laser beam focal line into the material at a first angle of incidence to the material, the laser beam focal line generating an induced absorption within the material, the induced absorption producing a defect line along the laser beam focal line within the material;
- translating the material and the laser beam relative to each other, thereby laser drilling a plurality of defect lines along a first plane at the first angle within the material;
- directing the laser beam focal line into the material at a second angle of incidence to the material, the laser beam focal line generating an induced absorption within the material, the induced absorption producing a defect line along the laser beam focal line within the material;
- translating the material and the laser beam relative to each other, thereby laser drilling a plurality of defect lines along a second plane at the second angle within the material, the second plane intersecting the first plane, and
- separating the material along the first plane and the second plane by applying an ion-exchange process to the material, wherein during separating of the material along the first plane and the second plane the ion-exchange process is applied to the material for time t, wherein 10 min≦t≦120 min.
A method of chamfering a material comprising:
- focusing a pulsed laser beam into a laser beam focal line, viewed along the beam propagation direction;
- and
- laser drilling a plurality of defect lines along each of N planes within the material by, for each of the N planes:
- directing the laser beam focal line into the material at a corresponding angle of incidence to the material, the laser beam focal line generating an induced absorption within the material, the induced absorption producing a defect line along the laser beam focal line within the material;
- and
- translating the material and the laser beam relative to each other, thereby laser drilling the plurality of defect lines along the corresponding plane of the N planes;
- and
- separating the material along at least one of said N planes by applying an ion-exchange process to the material.
A method of making a chamfered and strengthened glass article, comprises:
- (i) providing a glass article having a select contour and a glass surface, and a perforated edge and/or corner;
- (ii) removing the a portion of the glass adjacent to the perforated edge and/or corner by subjecting the article to a first ion-exchange process to complete a full-body cut between perforations;
- (iii) rinsing the glass article,
- (iv) air drying the rinsed glass article;
- and then
- (v) subjecting the glass article to a second ion-exchange process to strengthen the glass article and improve the resistance of the glass article to subsequent damage.
Dependencies are inferred from the claim text.