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US 2006/0075783 A1Published application
Method for strengthening flat glass plate for display
OwnerJae Seon Kim, Sergey Evstropievinventors
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Abstract
A flat glass plate can be strengthened by way of forming a solid layer comprising a potassium salt and an inorganic oxide on the glass plate, followed by heat-treatment at a temperature ranging from 400° C. to the strain point of the glass.
Claims8
A method for strengthening a flat glass plate which comprises the steps of:
- forming a solid layer comprising a potassium salt and an inorganic oxide on the glass plate;
- heat-treating the glass plate having the solid layer at a temperature ranging from 400° C. to the strain point of the glass to allow ion exchange of alkali metal ions between the solid layer and the glass plate surface to take place;
- and cooling and washing the heat-treated glass plate.
Dependencies are inferred from the claim text.