Corning Incorporated

Alejandro Antonio Becker

Tobias Christian Roeder

Helmut Schillinger

Ralf Joachim Terbrueggen

Uwe Stute

Benjamin Paul Foerg

A method of laser processing a coated substrate having a coating later disposed on a transparent workpiece that includes determining an optical characteristic of the coating layer and selecting a beam path for a pulsed laser beam based on the optical characteristic. The beam path is selected a polarization-adjusting beam path and a frequency-adjusting beam path. The method also includes directing the pulsed laser beam down the selected beam path to form a modified pulsed laser beam and directing the modified pulsed laser beam into the transparent workpiece, where the modified pulsed laser beam forms a laser beam focal line that induces absorption in the transparent workpiece to produce a defect in the transparent workpiece. The laser beam focal line includes a wavelength λ, a spot size w, and a Rayleigh range Zthat is greater than where Fis a dimensionless divergence factor.

Methods for adjusting beam properties for laser processing coated substrates

A method for processing a transparent mother sheet includes forming one or more closed contours in the transparent mother sheet that each define a perimeter of a transparent article. Forming each of the one or more closed contours includes directing a pulsed laser beam into the transparent mother sheet to produce defect within the transparent mother sheet and translating the transparent mother sheet and the pulsed laser beam relative to each other thereby laser forming defects along the one or more closed contours. The method further includes separating a portion of the transparent mother sheet along the closed contours, thereby forming one or more transparent articles, where the transparent articles are frictionally engaged with a frame portion of the transparent mother sheet, applying material to a surface the transparent articles, and releasing the transparent articles from frictional engagement with the frame portion.

Methods for laser forming transparent articles from a transparent mother sheet and processing the transparent articles in-situ

A method for laser preparation of a coated substrate to be laser cut is provided. The method includes substantially removing a target portion of a polymer coating from a coated substrate by directing an ablative laser beam to the target portion, wherein the target portion of the polymer coating has a width of between about 10 μm and about 6.0 mm.

Growing community of inventors

Stockdorf, Germany

Alejandro Antonio Becker