Process for making a conductively coated glass member and the product thereof
First Claim
1. A process for enhancing the electrical conductivity of an indium-tinoxide film coated on a glass substrate, which comprises first firing the coated substrate in atmosphere to a temperature in excess of about 500 degrees C. but below the softening point of the glass, followed by heating said film to a temperature greater than approximately 400 degrees C. in a reducing environment for a sufficient period of time to substantially lower the electrical resistance of the film.
1 Assignment
0 Petitions
Accused Products
Abstract
The specification discloses a method for making a curved, conductively coated glass member, and the resulting product, by providing for a sufficient degree of substoichiometry at the moment of bend that the glass can be bent using conventional bending techniques without crazing the coating. Two alternative methods for achieving the degree of substoichiometry are disclosed. One involves coating the part to an initial light transmittance (To) which is lower than that typically sought by prior artisans. The other involves bending the part in a reducing environment. Also disclosed is a method for increasing conductivity of the coating by exposing the coated part to a reducing environment at temperatures considerably higher than those heretofore thought feasible for use in reduction curing.
-
Citations
9 Claims
- 1. A process for enhancing the electrical conductivity of an indium-tinoxide film coated on a glass substrate, which comprises first firing the coated substrate in atmosphere to a temperature in excess of about 500 degrees C. but below the softening point of the glass, followed by heating said film to a temperature greater than approximately 400 degrees C. in a reducing environment for a sufficient period of time to substantially lower the electrical resistance of the film.
Specification