Solar Control Coating With Discontinuous Metal Layer

A coated transparency, comprising:

• a glass substrate;
• and
• a solar control coating over at least a portion of the glass substrate, the coating comprising:
• a first dielectric layer formed over at least a portion of the glass substrate;
• a first metallic layer over the first dielectric layer;
• a first primer layer over the first continuous metallic layer;
• a second dielectric layer over the first primer layer;
• a second metallic layer over the second dielectric layer;
• a third dielectric layer over the second discontinuous metallic layer;
• a third metallic layer over the third dielectric layer;
• a third primer layer over the third continuous metallic layer;
• a fourth dielectric layer over the third primer layer;
• and
• a protective coating over the fourth dielectric layer,
• wherein at least two of the metallic layers are discontinuous metallic layers,
• wherein the coated transparency has a solar heat gain coefficient (SHGC) of less than 0.3,
• wherein the coated transparency can be tempered or heat treated without adversely impacting the performance characteristics of the coated transparency and/or producing haze therein, and
• wherein the coated transparency is an automotive transparency or an architectural transparency.

A coated transparency, comprising:

• a glass substrate;
• and
• a solar control coating over at least a portion of the glass substrate, the coating comprising:
• a first dielectric layer formed over at least a portion of the glass substrate, wherein the first dielectric layer comprises a metal that is an oxide, an oxynitride, or a nitride, wherein the metal is selected from the group consisting of silicon, silicon-aluminum alloy or mixture, zinc, and zinc-tin alloy or mixture;
• a first metallic layer over the first dielectric layer, wherein the first metallic layer comprises silver, gold, copper, palladium or a mixture thereof;
• a first primer layer over the first metallic layer;
• a second dielectric layer over the first primer layer, wherein the second dielectric layer comprises a metal that is an oxide, an oxynitride, or a nitride, wherein the metal is selected from the group consisting of silicon, silicon-aluminum alloy or mixture, zinc, and zinc-tin alloy or mixture;
• a second metallic layer over the second dielectric layer, wherein the second metallic layer comprises silver, gold, copper, palladium or a mixture thereof, and wherein the second metallic layer is a discontinuous metallic layer having an effective thickness of less than 50 Å;
• a third dielectric layer over the second primer layer, wherein the third dielectric layer comprises a metal that is an oxide, an oxynitride, or a nitride, wherein the metal is selected from the group consisting of silicon, silicon-aluminum alloy or mixture, zinc, and zinc-tin alloy or mixture;
• a third metallic layer over the third dielectric layer, wherein the third metallic layer comprises silver, gold, copper, palladium or a mixture thereof;
• a third primer layer over the third metallic layer;
• and
• a fourth dielectric layer over the third primer layer, wherein the fourth dielectric layer comprises a metal that is an oxide, an oxynitride, or a nitride, wherein the metal is selected from the group consisting of silicon, silicon-aluminum alloy or mixture, zinc, and zinc-tin alloy or mixture,
• wherein at least one of the first metal layer and/or the third metallic layer is a discontinuous metallic layer,
• wherein the coated transparency has a solar heat gain coefficient (SHGC) of less than 0.3,
• wherein the coated transparency can be tempered or heat treated without adversely impacting the performance characteristics of the coated transparency and/or producing haze therein, and
• wherein the coated transparency is an automotive transparency or an architectural transparency.