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US 11,697,271 B2Granted
Laminated glazing with a switchable liquid crystal layer
AssigneeAGP America S.A.
InventorsMario Arturo Mannheim Astete, Andres Fernando Sarmiento Santos, Natalia Andrea Rueda Guerrero, Laura Granados Caro
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Abstract
A switchable laminated glazing comprising two stacks of components with different lamination parameters, a first stack of components which provides the mechanical protection of the glazing, and a second stack of components with variable light transmission.
Claims19
A switchable laminated glazing, comprising:
- a first stack of components having:
- an exterior glass layer having inner and outer surfaces;
- an intermediate glass layer having inner and outer surfaces;
- and
- at least one plastic bonding layer located between inner surfaces of said exterior and intermediate glass layers;
- and
- a second stack of components having:
- an interior glass layer having inner and outer surfaces;
- a first cured liquid optically clear adhesive;
- and
- a liquid crystal layer;
- wherein the second stack of components is disposed on and bonded to the first stack of components by said first cured liquid optically clear adhesive, such that the liquid crystal layer is sandwiched between the outer surface of the intermediate glass layer and the inner surface of the interior glass layers with the first cured liquid optically clear adhesive;
- wherein the first cured liquid optically clear adhesive and the liquid crystal layer are located within a sealed space, said sealed space defined by and sealed exclusively by the intermediate glass layer, the interior glass layer, and a perimeter seal, and wherein the perimeter seal is located between and directly contacts the intermediate and interior glass layers;
- wherein the liquid crystal layer comprises liquid crystals, two confronting polymeric substrates to encapsulate said liquid crystal layer, an edge seal and spacers;
- wherein the laminated glazing is a vehicle roof or vehicle side window;
- and
- wherein the switchable laminate glazing is curved.
14 more elements
A method of producing a switchable laminated glazing comprising the steps of:
- providing an exterior, intermediate and interior glass layers having each of them inner and outer surfaces;
- providing at least one plastic bonding layer;
- providing a liquid crystal layer;
- placing said at least one plastic bonding layer between the inner surfaces of the exterior and intermediate glass layers such that a first stack of components is assembled;
- laminating said first stack of components using an autoclave lamination cycle;
- placing a first liquid optically clear adhesive onto the inner surface of the interior glass layer;
- disposing the outer surface of the intermediate glass layer against the inner surface of the interior glass layers such that the liquid crystal layer is sandwiched between them;
- disposing a perimeter seal between and in direct contact with the intermediate glass layer and the interior glass layer;
- and
- curing the first liquid optically clear adhesive such that said first stack is permanently bonded to the interior glass layer and the components disposed in between such that a second stack of components is assembled;
- wherein the first liquid optically clear adhesive once cured and the liquid crystal layer are located within a sealed space, said sealed space defined by and sealed exclusively by the intermediate glass layer, the interior glass layer, and the perimeter seal,
- wherein the liquid crystal layer comprises liquid crystals, two confronting polymeric substrates to encapsulate said liquid crystal layer, an edge seal and spacers;
- wherein the laminated glazing is a vehicle roof or vehicle side window;
- and
- wherein the switchable laminate glazing is curved.
12 more elements
Dependencies are inferred from the claim text.