Metal-inclusive edge seal for vacuum insulating glass unit, and/or method of making the same
View Patent ↗Certain example embodiments of this invention relate to metal-inclusive edge seal designs for vacuum insulating glass (VIG) units, and/or methods of making the same. First and second substantially parallel spaced-apart glass substrates, including edge portions thereof, are provided. At least one metal-inclusive edge-sealing strip is located proximate to the edge portions of the first and second substrates, getter being applied to at least a portion of at least some of the edge-sealing strips, and the at least one edge-sealing strip being selected so as to have a coefficient of thermal expansion over a temperature range of interest within about 25% of a coefficient of thermal expansion of the first and second substrates, the temperature range of interest being from about −40° C. to about 50° C. The first and second substrates are sealed together proximate to the edge portions thereof with the at least one edge-sealing strip via an edge-sealing material provided to the at least one edge-sealing strip and/or the first and second glass substrates.
1. A vacuum insulating glass (VIG) unit comprising:
first and second substantially parallel spaced-apart glass substrates, including edge portions thereof;
at least one metal strip located between the substrates and proximate to the edge portions of the substrates,
the at least one metal strip having a coefficient of thermal expansion so that the coefficient of thermal expansion of the at least one metal strip and a coefficient of thermal expansion of the glass substrates do not differ from each other by more than about 25% over a temperature range of from about −40° C. to about 50° C.;
wherein the first and second substrates are sealed together proximate to the edge portions thereof via the at least one metal strip and an edge-sealing material provided proximate the at least one metal strip and the first and second glass substrates; and
wherein the at least one metal strip is spiral shaped so as to include multiple folds and at least three substantially coplanar portions at different planes between the glass substrates, and wherein the at least one metal strip is provided between only the first and second substrates and not between any other glass substrate(s).
2. The vacuum insulating glass unit of claim 1 , further comprising getter material provided on at least a portion of the strip.
3. The vacuum insulating glass unit of claim 1 , wherein the coefficient of thermal expansion of the strip and a coefficient of thermal expansion of the glass substrates do not differ from each other by more than about 15% over a temperature range of from about −40° C to about 50° C.
4. The vacuum insulating glass unit of claim 1 , wherein the strip has a width of from about 10-25 mm.
5. The vacuum insulating glass unit of claim 1 , further comprising getter material provided on each of the at least three substantially coplanar portions of the strip.