초록 ▼

An insulating glass (IG) window unit, or other suitable window unit, includes a glass substrate with a coating thereon. The coating includes at least one silicon nitride inclusive layer that is Si-rich (i.e., non-stoichiometric). By making the silicon nitride inclusive layer Si-rich, it has been fou

An insulating glass (IG) window unit, or other suitable window unit, includes a glass substrate with a coating thereon. The coating includes at least one silicon nitride inclusive layer that is Si-rich (i.e., non-stoichiometric). By making the silicon nitride inclusive layer Si-rich, it has been found that coloration can be adjusted in order to achieve certain desirable optical characteristics.

대표청구항 ▼

1. An insulating glass (IG) window unit comprising: first and second glass substrates spaced apart from one another so that a space is provided therebetween, at least the first glass substrate being thermally tempered and supporting a coating, wherein the coating comprises: a first dielectric lay

1. An insulating glass (IG) window unit comprising: first and second glass substrates spaced apart from one another so that a space is provided therebetween, at least the first glass substrate being thermally tempered and supporting a coating, wherein the coating comprises: a first dielectric layer comprising silicon nitride SixNy,a first contact layer,a layer comprising Ag,a second contact layer, wherein the layer comprising Ag is located between and directly contacts each of said first and second contact layers, anda second dielectric layer, wherein the first dielectric layer comprising silicon nitride Si xNyis Si-rich so that x/y is from 0.76 to 2.0, and so that after thermal tempering of the first substrate with the coating thereon the coating has a sheet resistance (Rs) of at least 7 ohms/square, and wherein the IG window unit has a visible transmission of at least 69%, transmissive a* color of from −6.0 to 1.0, transmissive b* color of from −1.0 to 4.0, glass side reflective a* color of from −4.0 to 2.0, and glass side reflective b* color of from −4.0 to 3.0. 2. The IG window unit of claim 1, wherein the first dielectric layer comprising silicon nitride has an index of refraction “n” of from 2.15 to 2.6, and wherein after the tempering the coating has a sheet resistance (Rs) of at least 8 ohms/square.3. The IG window unit of claim 1, wherein the first dielectric layer comprising silicon nitride has an index of refraction “n” of from 2.15 to 2.6 and an extinction coefficient “k” less than or equal to 0.07.4. The IG window unit of claim 1, wherein the first dielectric layer comprising silicon nitride has an index of refraction “n” of from 2.2 to 2.5 and an extinction coefficient “k” less than or equal to 0.06.5. The IG window unit of claim 1, wherein the first dielectric layer comprising silicon nitride has an index of refraction “n” of from 2.35 to 2.45.6. The IG window unit of claim 1, wherein the first dielectric layer comprising silicon nitride has an index of refraction “n” of from 2.15 to 2.6 and an extinction coefficient “k” of from 0.0001 to 0.05.7. The IG window unit of claim 1, wherein at least one of the first and second contact layers comprises NiCr.8. The IG window unit of claim 1, wherein each of the first and second contact layers comprise NiCr.9. The IG window unit of claim 1, wherein the second dielectric layer comprises silicon nitride.10. The IG window unit of claim 1, wherein the coating includes only a single Ag layer.11. The IG window unit of claim 1, wherein prior to the tempering the coating has a sheet resistance (Rs) of at least 8 ohms/square.12. The IG window unit of claim 11, wherein prior to the tempering the coating has a sheet resistance (Rs) of at least 10 ohms/square.13. The IG window unit of claim 1, wherein the first dielectric layer comprising silicon nitride is located between the first glass substrate and the layer comprising Ag.14. The IG window unit of claim 1, wherein the first dielectric layer comprising silicon nitride is in direct contact with the first glass substrate.15. The IG window unit of claim 1, wherein the first dielectric layer comprising silicon nitride is from 300 to 600 ∠st; thick, and the layer comprising Ag is metallic and is from 50 to 200 ∠st; thick.16. The IG window unit of claim 1, wherein the IG unit has a visible transmission of at least 70%, transmissive a* color of from −5.0 to 0, transmissive b* color of from 0.5 to 3.5, glass side reflective a* color of from −3.0 to 1.0, and glass side reflective b* color of from −3.0 to 1.5.17. An insulating glass (IG) window unit comprising: first and second glass substrates spaced apart from one another, the first glass substrate supporting a coating, wherein the coating comprises: a first dielectric layer comprising silicon nitride SixNy,only one layer comprising Ag,a second dielectric layer, andwherein the first dielectric layer comprising silicon nitride SixNyis characterized in that x/y is from about 0.76 to 2.0, and wherein the coating has a sheet resistance (R s) of at least 6 ohms/square after heat treatment at temperature(s) of at least 500 degrees C.18. The IG window unit of claim 17, wherein the IG window unit, after the heat treatment of the first substrate and the coating, has a visible transmission of at least 69%, transmissive a* color of from −6.0 to 1.0, transmissive b* color of from −1.0 to 4.0, glass side reflective a* color of from −4.0 to 2.0, and glass side reflective b* color of from −4.0 to 3.0.19. The IG window unit of claim 17, wherein the coating has a sheet resistance (Rs) of from 7 to 30 ohms/square before and/or after the heat treatment.20. The IG window unit of claim 17, wherein the IG window unit has a visible transmission of at least 70%, transmissive a* color of from −5.0 to 0, transmissive b* color of from 0.5 to 3.5, glass side reflective a* color of from −3.0 to 1.0, and glass side reflective b* color of from −3.0 to 1.5.21. The IG window unit of claim 17, wherein the first dielectric layer comprising silicon nitride has an index of refraction “n” of from 2.2 to 2.5 and an extinction coefficient “k” less than or equal to 0.06.22. A coated article including a coating supported by a glass substrate, the coating comprising: a first dielectric layer comprising silicon nitride Si xNy, a first contact layer, an IR reflecting layer, a second contact layer, wherein the IR reflecting layer is located between and directly contacts each of said first and second contact layers, and a second dielectric layer, and wherein the first dielectric layer comprising silicon nitride is Si-rich so as to have an index of refraction “n” of from 2.15 to 2.6 and an extinction coefficient “k” less than or equal to 0.07; and wherein the coating has a sheet resistance of from 7 to 40 ohms/square. 23. The coated article of claim 22, wherein the IR reflecting layer comprises Ag, and wherein the coating includes only one layer comprising Ag.24. The coated article of claim 22, wherein at least one of the first and second contact layers comprises NiCr, and wherein the second dielectric layer comprises silicon nitride.25. The coated article of claim 22, wherein the first dielectric layer comprising silicon nitride has an index of refraction “n” of from 2.2 to 2.5 and an extinction coefficient “k” less than or equal to 0.06.26. A method of making a window, the method comprising: providing first and second substrates, at least the first substrate comprising glass; forming a first dielectric layer comprising silicon nitride on the first substrate in a manner so as to have an index of refraction “n” of from 2.15 to 2.6 and an extinction coefficient “k” less than or equal to 0.07; forming an IR reflecting layer on the first substrate over the first dielectric layer; forming at least one additional dielectric layer on the first substrate over the IR reflecting layer, wherein the coating has a sheet resistance of from 7-40 ohms/square; thermally tempering the first substrate with the coating thereon; and after said tempering, coupling the first substrate to the second substrate to form the window, the window having transmissive a* color of from 6.0 to 1.0, transmissive b* color of from −1.0 to 4.0, glass side reflective a* color of from −4.0 to 2.0, and glass side reflective b* color of from −4.0 to 3.0. 27. The method of claim 26, wherein the first dielectric layer comprising silicon nitride has an index of refraction “n” of from 2.2 to 2.5 and an extinction coefficient “k” less than or equal to 0.06.28. A coated article comprising: a glass substrate supporting a coating having a sheet resistance (R s) of from 7 to 40 ohms/square before and/or after heat treatment, wherein the coating includes a layer comprising Ag and a dielectric layer comprising non-stoi chiometric silicon nitride having an index of refraction “n” of from 2.2 to 2.5 and an extinction coefficient “k” less than or equal to 0.06.29. The coated article of claim 28, wherein the coating includes only one layer comprising Ag.30. The coated article of claim 28, wherein the coated article comprises an IG window unit having at least three of: (i) a visible transmission of at least 69%, (ii) transmissive a* color of from −6.0 to 1.0, (iii) transmissive b* color of from −1.0 to 4.0, (iv) glass side reflective a* color of from −4.0 to 2.0, and (v) glass side reflective b* color of from −4.0 to 3.0.31. A method of making an IG window unit, the method comprising: forming a coating on a glass substrate so as to have a sheet resistance (R s) of from 8 to 30 ohms/square before heat treatment, wherein the coating includes a layer comprising Ag and a dielectric layer comprising Si-rich silicon nitride having an index of refraction “n” of from 2.2 to 2.5 and an extinction coefficient “k” less than or equal to 0.06; thermally tempering the glass substrate having the coating thereon; and after the tempering, coupling the glass substrate with the coating thereon to another substrate to form an IG window unit having at least three of: (i) a visible transmission of at least 68%, (ii) transmissive a* color of from −6.0 to 1.0, (iii) transmissive b* color of from −1.0 to 4.0, (iv) glass side reflective a* color of from −4.0 to 2.0, and (v) glass side reflective b* color of from −4.0 to 3.0. 32. The method of claim 31, wherein the IG window unit has at least four of (i)-(v).