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US 6,235,383 B1Granted
Glass article having a durable water repellent surface
AssigneeSamsung Corning Co., Ltd.
InventorsByung Sun Hong, Joo Hun Han
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Abstract
A glass substrate is provided with a durable and abrasion-resistant water-repellent surface, by coating a surface of the substrate with a silica solution which has been subjected to a two-step aging process, respectively in the presence of basic and acidic catalysts, which is then thermally treated to provide a coarse-surfaced silica layer including fine crystalline silica particles, which is then coated with a water-repellent layer made of fluoroalkylsilane.
Claims5
An article having a water-repellent surface, comprising:
- a glass substrate having a surface;
- a layer of a silica composition formed on said surface of said glass substrate, said silica composition including silica crystal particles evenly distributed within said layer and present at a surface of said layer of silica composition presented away from said surface of said glass substrate;
- and
- a layer of water-repellent film formed on said layer of silica composition, and
- wherein said layer of silica composition is formed by:
- subjecting a tetraethoxysilane solution to a first aging step under one of basic and acidic conditions, and then to a second aging step under the other of acidic and basic conditions;
- coating said surface of said glass substrate with said solution, so aged;
- and
- subjecting said glass substrate as coated by said solution to a thermal treatment.
6 more elements
Dependencies are inferred from the claim text.