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US 12,619,110 B2Granted
Device for the regulation of light transmission
AssigneeMerck Patent GmbH
InventorsMichael Junge, Andreas Beyer, Ewa Dominika Ptak
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Abstract
A polymerizable LC material containing one or more reactive mesogenic compounds, one or more chiral compounds and one or more compounds of formula I, wherein the individual radicals have one of the meaning as defied herein, is suitable for use in in optical, electro-optical, decorative or security devices. Polymer films with improved thermal and UV stability are obtainable from the polymerizable LC material.
Claims17
A window element, comprising:
- a switchable optical cell which is arranged in a laminate, wherein the switchable optical cell is electrically switchable between at least two optical states, and the switchable optical cell comprises a switchable layer interposed between two opposing transparent substrates,
- wherein each substrate is provided with an electrode structure or one of the substrates is provided with two electrode structures and the other substrate is not provided with an electrode,
- wherein the switchable layer comprises a liquid-crystalline medium having a clearing point in the temperature range of from 15° C. to 45° C., and wherein the working temperature range of the window element is between −5° C. to 55°C., and
- wherein the switchable optical cell can be switched both electrically and thermally.
1 more element
Dependencies are inferred from the claim text.