Raised features on transparent substrates and related methods
AssigneeCorning Incorporated
InventorsRichard Robert Grzybowski, Stephan Lvovich Logunov, Alexander Mikhailovich Streltsov
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Abstract
Raised features are formed on a transparent substrate having absorption of less than about 20% within a processing wavelength range. A portion of the substrate is irradiated with a light beam to increase the absorption of the irradiated portion of the substrate. Continued irradiation causes local heating and expansion of the substrate so as to form a raised feature on the substrate surface.
Claims16
A method for forming a raised feature on a transparent substrate, the method comprising the steps of:
- providing a transparent substrate having a surface, the substrate having an absorption of less than about 20% within a processing wavelength range;
- irradiating a portion of the transparent substrate with a processing light beam within the processing wavelength range for at least one second to increase the absorption of the irradiated portion of the substrate in the processing wavelength range;
- continuing to irradiate the portion of the transparent substrate within the processing wavelength range to cause local heating and expansion of the substrate so as to form a raised feature on the substrate surface;
- and
- terminating the irradiation to stop heating of the substrate so as to fix the raised feature.
A method for forming a raised feature on a transparent substrate, the method comprising the steps of:
- providing a transparent substrate having a surface, the substrate having an absorption of less than about 20% within a first wavelength range;
- irradiating a portion of the transparent substrate with light within the first wavelength range for at least one second to increase absorption within the irradiated portion of the transparent substrate to greater than about 40% within a second wavelength range;
- irradiating the portion of the transparent substrate with light within the second wavelength range to cause local heating and expansion of the substrate so as to form a raised feature on the substrate surface;
- and
- terminating the irradiating to stop heating of the substrate so as to fix the raised feature.
Dependencies are inferred from the claim text.