Patent ID: 7597963

Claim:
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 consists essentially of: a first dielectric layer comprising silicon nitride, a lower contact layer comprising zinc oxide over and contacting the first dielectric layer comprising silicon nitride, a layer comprising Ag over and contacting the lower contact layer comprising zinc oxide, an upper contact layer comprising Ni and/or Cr, wherein the layer comprising Ag is located between and directly contacts each of said upper and lower contact layers, and a second dielectric layer comprising silicon nitride located over and contacting the upper contact layer comprising Ni and/or Cr, wherein the coating includes only one layer based on Ag, and wherein the IG window unit has a SHGC of no greater 0.55, a visible transmission of at least about 68%, transmissive a* color of from −5.5 to 0.0, transmissive b* color of from +0.5 to +3.5, 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.