Alkoxysilane coating for cathode ray tubes
AssigneeZenith Electronics Corporation
InventorsHua-Sou Tong, Gregory Prando
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Abstract
The present invention is directed to a cathode ray tube (CRT) having a surface with improved antistatic and antiglare properties and to a method for providing such improved properties. In the method of the invention, a solution of an alkoxyilane in a solvent system of an alcohol, chloride ion and water is provided. The solution is applied to the surface of a cathode ray tube to impart antiglare and antistatic properties to the surface. Thereafter, the CRT with the saline applied is cured at an elevated temperature for a period of time sufficient to cause the saline to react and be converted to a siloxane.
Claims32
A method for improving the antistatic and antiglare properties of the surface of a cathode ray tube comprising:
- (a) providing a solution of an alkoxysilane in a solvent system comprising an alcohol, chloride ion from hydrochloric acid which is present at a level of from about 1% to about 15% and water,
- (b) spraying droplets of said solution onto the surface of a cathode ray tube, and
- (c) curing said silane on said cathode ray tube in a curing step for a period of time sufficient to convert said silane to a siloxane on the surface of said cathode ray tube.
A cathode ray tube having a surface with reduced gloss comprising a cathode ray tube having a coating on the surface thereof, said coating being provided by spraying fine droplets of a solution of an alkoxysilane in a solvent system comprising an alcohol, chloride ion from hydrochloric acid which is present at a level of from bout 1% to about 15% and water onto the surface of said CRT and curing the silane for aspired of time sufficient to convert said silane to a siloxane coating on the surface of said cathode ray tube, said siloxane coating having a uniform, fine texture.
Dependencies are inferred from the claim text.