Seal and seal system for a layered device
The disclosure provides, in part a seal system for sealing a film. The disclosure further provides, in part, a sealed film comprising a first and a second substrate; a first and a second electrode disposed on the surface of at least one of the substrates; a switching material disposed between the first and second substrates; a first seal and a second seal; the first seal disposed along an edge of the switching material, separating the switching material from the second seal.
1. An encapsulated switchable film comprising:
a layer of switching material between a pair of substrates, the switching material in contact with a first and a second electrode disposed on first surfaces of the substrates;
a first seal surrounding the layer of switching material;
first and second encapsulating layers affixed to second surfaces of the substrates; and
a second seal disposed between the first and second encapsulating layers and separated from the switching material by the first seal,
wherein the switching material is photochromic and electrochromic.
2. The switchable film of claim 1 , wherein the first seal is adherent to: the first electrode; the second electrode; or the first and second electrodes.
3. The switchable film of claim 1 , further comprising a first pair of electrical connectors encapsulated with the second seal.
4. The switchable film of claim 3 , further comprising a second pair of electrical connectors.
5. The switching material of claim 4 , wherein the second pair of electrical connectors is encapsulated with the second seal.
6. The switchable film of claim 1 , wherein: the first seal comprises an elastomeric material; the second seal comprises an elastomeric material; or the first and second seals independently comprise an elastomeric material.
7. The switchable film of claim 6 , wherein the elastomeric material is silicone rubber, natural rubber, or synthetic rubber.
8. The switchable film of claim 1 , wherein the first and second electrodes comprise a transparent conductive metal oxide.
9. The switchable film of claim 1 , wherein:
the first seal comprises: a thermoplastic polymer; a thermoset polymer; or a thermoplastic polymer and a thermoset polymer;
the second seal comprises: a thermoplastic polymer; a thermoset polymer; or a thermoplastic polymer and a thermoset polymer; or
the first and second seals independently comprise: a thermoplastic polymer; a thermoset polymer; or a thermoplastic polymer and a thermoset polymer.
10. The switchable film of claim 1 , wherein the first seal is disposed upon an offset area along an edge of the switching material.
11. The switchable film of claim 1 , wherein the first substrate is offset along at least two adjacent edges relative to the second substrate.
12. The switchable film of claim 1 , wherein the first seal contacts the first electrode, the second electrode, or the first electrode and the second electrode.
13. The switchable film of claim 1 , wherein the first seal is non-reactive with the switching material.
14. The switchable film of claim 1 , wherein the first seal is non-absorbing, or substantially non-absorbing of the switching material or a component of the switching material.
15. The switchable film of claim 1 , wherein the first seal, the second seal, or the first seal and the second seal, is gas-impermeable or water-impermeable.
16. The switchable film of claim 1 , wherein the first seal, the second seal, or the first seal and the second seal, is electrically insulating.
17. The switchable film of claim 1 , wherein the film is a lens-shaped film comprising a cutout section and a nose bridge section.
18. The switchable film of claim 1 , wherein the sealed film is a spacerless switchable film.
19. The switchable film of claim 1 , wherein the switching material is self-supporting.
20. The switchable film of claim 1 , wherein the first and second seals are formed of a same material.