초록 ▼

A glazing for thermal control and heating is provided. The glazing includes a transparent substrate including glass and provided with a thin-film stack including a plurality of functional layers. The thin-film stack includes at least three silver-based functional layers. The thin-film stack has a re

A glazing for thermal control and heating is provided. The glazing includes a transparent substrate including glass and provided with a thin-film stack including a plurality of functional layers. The thin-film stack includes at least three silver-based functional layers. The thin-film stack has a resistance R1.5Ω per square.

대표청구항 ▼

1. A glazing for thermal control and heating, comprising: a transparent substrate including glass and provided with a thin-film stack including a plurality of functional layers, the thin-film stack including at least three silver-based functional layers,wherein the thin-film stack has a resistance R

1. A glazing for thermal control and heating, comprising: a transparent substrate including glass and provided with a thin-film stack including a plurality of functional layers, the thin-film stack including at least three silver-based functional layers,wherein the thin-film stack has a resistance R<1.5Ω per square,wherein the glazing has a selectivity greater than or equal to 2, andwherein the selectivity is defined as the ratio of a light transmission TL to a solar factor SF, said solar factor SF being defined as the sum of a direct energy transmission TE of the glazing and an energy absorbed by the glazing and retransmitted. 2. The glazing as claimed in claim 1, wherein a light transmission TL of the transparent substrate is TL≧70%. 3. The glazing of claim 1, wherein a light transmission TL of the transparent substrate is TL≧40%. 4. The glazing as claimed in claim 1, wherein a light transmission TL of the transparent substrate is TL≧40% and a resistance of the transparent substrate is R≦1.1Ω per square. 5. The glazing as claimed in claim 1, wherein the transparent substrate includes at least four silver-based functional layers. 6. The glazing as claimed in claim 1, wherein at least one functional layer comprises an upper layer based on Si3N4, AlN, or a mixture of Si3N4 and AlN. 7. The glazing as claimed in claim 1, wherein the transparent substrate is directly coated with a layer based on Si3N4, AlN or a mixture of Si3N4 and AlN. 8. The glazing as claimed in claim 1, wherein the transparent substrate includes an identical functional feature for each of the at least three silver-based functional layers, andwherein each functional feature associates a corresponding silver-based functional layer with at least one subjacent or superjacent layer. 9. The glazing as claimed in claim 1, wherein a total thickness of the at least three silver-based functional layers is greater than or equal to 25 nm. 10. The glazing as claimed in claim 9, wherein a total thickness of the at least three silver-based functional layers is between 35 and 50 nm when the stack comprises three functional layers. 11. The glazing as claimed in claim 9, wherein a total thickness of the at least three silver-based functional layers is between 28 and 64 nm when the stack comprises at least four functional layers. 12. The glazing as claimed in claim 1, wherein at least one of the plurality of functional layers, is located between at least one lower dielectric layer and at least one upper dielectric layer. 13. The glazing as claimed in claim 12, wherein said dielectric layers are based on ZnO. 14. The glazing as claimed in claim 13, wherein said dielectric layers are doped with aluminum. 15. The glazing as claimed in claim 1, wherein the transparent substrate includes a functional feature for each of the at least three silver-based functional layers, andwherein each functional feature associates a corresponding silver-based functional layer with at least one subjacent or superjacent layer. 16. The glazing as claimed in claim 15, wherein, at least one of the functional features includes an upper absorbent metal layer located between one of the silver-based functional layers and at least one upper dielectric layer. 17. The glazing as claimed in claim 16, wherein the upper absorbent metal layer is based on Ti. 18. The glazing as claimed in claim 15, wherein, at least one of the functional features includes a lower absorbent metal layer located between at least one lower dielectric layer and one of the silver-based functional layers. 19. The glazing as claimed in claim 18, wherein the lower absorbent metal layer is based on Ti. 20. The glazing as claimed in claim 15, wherein at least one of the functional features has a structure beginning with ZnO/Ag and ending with ZnO/Si3N4. 21. The glazing as claimed in claim 20, wherein the thin-film stack includes three silver-based functional layers, andthicknesses of constituent layers of the at least one of the functional features with the structure beginning with ZnO/Ag and ending with ZnO/Si3N4 are 5 to 15/10 to 17 nm and 5 to 15/25 to 65 nm respectively. 22. The glazing as claimed in claim 20, wherein the thin-film stack includes four silver-based functional layers, andthicknesses of constituent layers of the at least one of the functional features with the structure beginning with ZnO/Ag and ending with ZnO/Si3N4 are 5 to 15/10 to 17 nm and 5 to 15/25 to 65 nm respectively. 23. The glazing as claimed in claim 20, wherein the structure of the at least one of the functional features is ZnO/Ag/Ti/ZnO/Si3N4. 24. The glazing as claimed in claim 23, wherein thicknesses of constituent layers of the at least one of the functional features having the structure ZnO/Ag/Ti/ZnO/Si3N4 are 5 to 15/10 to 17/0.2 to 3/5 to 15/25 to 65 nm. 25. The glazing as claimed in claim 23, wherein the thin-film stack includes three silver-based functional layers, andthicknesses of constituent layers of the at least one of the functional features having the structure ZnO/Ag/Ti/ZnO/Si3N4 are 5 to 15/10 to 17/0.2 to 3/5 to 15/25 to 65 nm. 26. The glazing as claimed in claim 23, wherein the thin-film stack includes four silver-based functional layers, andthicknesses of constituent layers of the at least one of the functional features having the structure ZnO/Ag/Ti/ZnO/Si3N4 are 5 to 15/7 to 15/0.2 to 3/5 to 15/23 to 65 nm.