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US 2016/0257885 A1Published application
Device for regulating the entry of light
AssigneeMerck Patent GmbH
InventorsMichael JUNGE, Andreas BEYER, Ursula PATWAL
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Abstract
The application relates to a device for regulating the entry of light into a room, which comprises a switchable layer of specific design comprising a twisted nematic liquid-crystalline medium and a dichroic compound.
Claims26
Device for regulating the entry of light into a room,
- comprising a switchable layer S comprising a liquid-crystalline medium which comprises at least one dichroic compound,
- where the following applies to the thickness d of layer S and the optical anisotropy Δn of the liquid-crystalline medium of layer S:
- d<2 μm/Δn
- and where the molecules of the liquid-crystalline medium of layer S are in a twisted nematic state in the switching state of the device without an applied electrical voltage or in the switching state of the device with an applied electrical voltage.
1 more element
Dependencies are inferred from the claim text.