A polysiloxane elastomer containing liquid crystal lateral chain, and a smart watch made therefrom are disclosed. The polysiloxane elastomer containing liquid crystal lateral chain includes a polysiloxane backbone chain and a lateral chain formed by a liquid crystalline monomer and connected with the polysiloxane backbone chain, wherein the polysiloxane backbone chain is crosslinked by a crosslinking agent.

A composition for an optical film, including a homeotropic liquid crystal, a silane or germane compound including at least one fluorine at a terminal end thereof, and a polymerizable compound.

The present invention relates to thiadiazoloquinoxaline derivatives of the formula I,

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in which R.sup.11, R.sup.12, A.sup.11, A.sup.12, A.sup.21, A.sup.22, Z.sup.11, Z.sup.12, Z.sup.21, Z.sup.22, W, X.sup.11, X.sup.12, r and s have the meanings indicated in claim 1,

to processes and intermediates for the preparation thereof, to the use of the compounds of the formula I for optical, electro-optical and electronic purposes, in particular in liquid-crystal media and in devices for regulating the passage of energy from an outside space into an inside space, and to these LC media and the devices comprising these media.

The present invention relates to thiadiazoloquinoxaline derivatives of the formula I,

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in which R.sup.11, R.sup.12, A.sup.11, A.sup.12, A.sup.21, A.sup.22, Z.sup.11, Z.sup.12, Z.sup.21, Z.sup.22, W, X.sup.11, X.sup.12, r and s have the meanings indicated in claim 1,

to processes and intermediates for the preparation thereof, to the use of the compounds of the formula I for optical, electro-optical and electronic purposes, in particular in liquid-crystal media and in devices for regulating the passage of energy from an outside space into an inside space, and to these LC media and the devices comprising these media.

A liquid crystal element includes a pair of substrates disposed to face each other, a liquid crystal layer disposed between the pair of substrates, and a liquid crystal alignment layer provided on each of the liquid crystal layer sides of the pair of substrates. The liquid crystal layer includes a compound having an alkenyl structure and a compound having a terphenyl ring structure, or includes a compound having an alkenyl structure and a terphenyl ring structure in the same molecule, and the liquid crystal alignment layer is a layer comprising a liquid crystal alignment agent containing a polymer (P) which has at least one selected from the group consisting of a radical polymerizable group, a photoinitiator group, a nitrogen-containing heterocyclic ring (excluding imide rings in polyimides), an amino group and a protected amino group.

Nonlinear optical chromophore compositions which display lyotropic nematic liquid crystal phases in polar organic solvents and provide a mechanical anisotropic effect allowing for the formation of a non-centrosymmetric chromophore-polymer matrix without the application of an electric field.

Due to excellent processability of the POSS-dendron-structured liquid crystal compound according to the present invention, it is possible to coat and print on the compound and, also, to manufacture large size flexible devices. According to the present invention, it is possible to maximize the physical bond strength between liquid crystals and, thus, to form higher-order structures by controlling the physical bond strength. Since the POSS-dendron-structured liquid crystal compound of the present invention introduces non-functional groups to inorganic chemicals in contrast to the conventional liquid crystals, the compound disperses well into general types of solvents. In addition, the chemical and mechanical properties of the compound of the invention, such as increase of maximum allowable temperature, inhibition of oxidation, increase of surface hardness, etc., improves since polysilsesquioxane includes reactive or non-reactive organic compounds. When the POSS-dendron-structured liquid crystal compound of the invention is used as an additive for liquid crystal layers, it can enhance the orientation of liquid crystal molecules. Moreover, the POSS part of the added liquid crystal compound of the invention may move to the lower surface of the liquid crystal layer and, then, improves the orientation.

The invention relates to a polymer film having negative optical dispersion, novel polymerisable compounds and liquid crystal (LC) materials for its preparation, and the use of the polymer film and novel compounds and materials in optical, electrooptical, electronic, semiconducting or luminescent components or devices.

Provided is a liquid crystal composition. The liquid crystal composition includes 1 to 50 wt % of an achiral smectic liquid crystal, and a remaining amount of a nematic liquid crystal. The nematic liquid crystal includes a negative nematic liquid crystal.

Nonlinear optical chromophore compositions which display lyotropic nematic liquid crystal phases in polar organic solvents and provide a mechanical anisotropic effect allowing for the formation of a non-centrosymmetric chromophore-polymer matrix without the application of an electric field.

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