Light modulation element
AssigneeMerck Patent GmbH
InventorsPhil Baker, Rachel Tuffin, Joseph Sargent, Ian Sage
Life of this patent
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Abstract
The invention relates to a light modulation element comprising a pair of substrates, one or more optical films located on the inner side of one of the substrates, an electrode structure capable of inducing an electric field substantially in parallel to the substrates main plane, and a homogenously aligned liquid crystalline medium which is obtainable from a photoalignment component A) and a liquid-crystalline component B). Furthermore, the invention relates process of production of the light modulation element, to the use of the light modulation element in an electro optical device and to an electro optical device comprising said light modulation element.
Claims14
A light modulation element comprising a pair of substrates, one or more optical films located on the inner side of one of the substrates, an electrode structure capable of inducing an electric field substantially in parallel to the substrates main plane, and a homogenously aligned liquid crystalline medium, which is obtained from a photoalignment component A and a liquid-crystalline component B comprising polymerizable liquid crystalline materials comprising one or more multi- or direactive mesogenic compounds, optionally one or more monoreactive mesogenic compounds, and one or more polymerizable isotropic compounds of formula DRI,
- P1-Sp1-(CF2)n-Sp2-P2 DRI
- wherein
- P1 and P2 independently of each other denote a polymerisable group,
- Sp1 and Sp2 independently of each other are a spacer group or a single bond, and n denotes an integer from 2 to 12.
Dependencies are inferred from the claim text.