Method of applying a protective coating to a touch screen panel
Assignee3M Innovative Properties Company
InventorsFrank J. Bottari, Paul J. Richter, Chia-Yen Li
Life of this patent
Estimating the term…
Abstract
A method of applying a protective coating to a touch screen panel. A coating material which cures at an elevated temperature is applied to a touch screen panel on at least one surface thereof. The panel is then heated to a temperature which does not adversely affect the panel by irradiating the panel imparting energy to the coating material to more fully cure the coating material in a shorter time period without damaging the panel.
Claims14
A method of applying a protective coating to a touch screen panel, the method comprising:
- applying to a touch screen panel on at least one surface thereof a coating material which cures at a temperature above 500° C.;
- and
- heating the panel to a temperature which does not cause thermal damage to the panel by irradiating the panel with infrared energy having wavelength of between 2.5-6.0 microns and imparting energy to the coating material to more ally cure the coating material in a shorter time period than in the absence of irradiation and without damaging the panel.
A method of applying a protective coating to a touch screen panel, the method comprising:
- applying to a touch screen panel on at least one surface thereof a coating material which cures at an elevated temperature;
- heating the panel to a temperature which does not cause thermal damage to the panel by irradiating the panel and imparting energy to the coating material to more filly cure the coating material in a shorter time period than in the absence of irradiation and without damaging the panel;
- and
- wherein said heating takes place in an oven equipped with infrared heaters disposed over a conveyor which transports the coated touch screen panels, and wherein said oven is further equipped with refractory heaters for convectively heating the touch screen panels.
A method of applying a protective coating to a touch screen panel, the method comprising:
- applying to a touch screen panel on at least one surface thereof an abrasion resistant coating material which cures at an elevated temperature;
- and
- heating the panel to a temperature which does not cause thermal damage to the panel by irradiating the panel with infrared radiation to impart energy to the coating material to more fully cure the coating material in 1-2 minutes than without infrared radiation and without damaging the panel.
A method of applying an abrasion resistant protective coating to a touch screen panel, the method comprising:
- applying to a glass substrate a resistive layer and, on a periphery of the resistive layer, an edge electrode pattern;
- applying over the resistive layer an abrasion resistant protective coating material including a silicate polymer solution which densities at a temperature of above about 500° C.;
- and
- irradiating the panel with infrared radiation having a wavelength of between 2.5 and 6.0 microns to heat the panel to a temperature which does not cause thermal damage to the panel and yet imparting energy to the protective coating material to more fully cure and densify the protective coating material in a shorter time period than in the absence of radiation and without damaging the panel.
Dependencies are inferred from the claim text.