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US 6,025,037 AGranted
Method of curing a film
AssigneeU.S. Philips Corporation
InventorsSipke Wadman, Marcus J. Van Bommel
Life of this patent
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Abstract
A sol-gel coating of conductive materials, such as ITO, which is applied to a substrate, for example a display window of a cathode ray tube, is cured by means of a laser. This is preferably carried out in a water-containing atmosphere, for example an aqueous aerosol and/or a hydrogen-containing gas, such as a forming gas. This results in a stable resistance reduction by several hundred times.
Claims11
A method of curing a film provided on the surface of a substrate, said method comprising:
- providing on said surface of said substrate a film that absorbs less laser light than said substrate, subjecting said film to a laser beam incident on a limited area of said film while scanning said surface, said film absorbing little or no laser light and release of energy, from said laser beam, for heating the film being concentrated essentially only in the substrate area underneath said film to a depth of less than 10 .mu.m thereby preventing essentially all thermal stress formation in said substrate.
Dependencies are inferred from the claim text.