Patent ID: 6787005
Filing Date: 2004-09-07
Classification: B32B,C03C,C23C

Abstract:
A method of making a coated article including a coating supported by a glass substrate, the method comprising:sputtering a first dielectric layer on the glass substrate; sputtering a target comprising a metal or metal alloy in an atmosphere including at least oxygen gas in order to form a first contact layer comprising a metal oxide on the substrate over the first dielectric layer; sputtering a target comprising Ag in an atmosphere including at least oxygen gas in order to form an infrared (IR) reflecting layer comprising AgOx which is located over and contacts the first contact layer; sputtering a target comprising a metal or metal alloy in an atmosphere including at least oxygen gas in order to form a second contact layer comprising a metal oxide on the substrate so that the second contact layer is located over and in contact with the IR reflecting layer comprising AgOx; wherein more oxygen gas is introduced into each of the respective atmospheres proximate the targets used in sputtering the first and second contact layer than is introduced into the atmosphere proximate the target comprising Ag used in sputtering the IR reflecting layer comprising AgOx; and heat treating the glass substrate with the coating thereon in order to thermally temper the same, and wherein visible transmission of the coated article does not decrease as a result of said heat treating.