Ink-jet printable compositions including nanoparticles capped with a protective layer of hydrocarbon chains and a single solvent exhibiting a single evaporation rate and having a specifically defined viscosity and surface tension that result in uniform and printable alignment layers for liquid crystal materials. Patterned liquid crystal-containing cells are also disclosed including one or more layers including the same or different nanoparticles capped with a protective layer of hydrocarbon chains printed on a surface of a substrate or even another nanoparticle-containing layer. Methods for producing the cells are also disclosed, including the step of printing a pattern on one or more portions of a cell surface utilizing a composition comprising the capped nanoparticles. Devices including the cells are also disclosed.

The invention relates to a photoalignment composition comprising at least a single photoalignment polymer, preferably a homo- or a copolymer having at least one photoreactive group; and at least a single solvent of formula (I)

(RCOOR),

wherein R and R are independently from each other straight-chain or branched alkyl chain, with the proviso that at least one alkyl chain is branched.

Further, the present invention relates to the use of this composition for coating or printing, especially for printing, more especially for inkjet or offset printing processes, and most especially for an offset printing process. In addition, the present invention relates to the use of the photoalignment composition for the preparation of orientation layers for liquid crystals and in the construction of unstructured and structured optical elements and multi-layer systems, especially liquid crystal displays, LCDs.

A liquid crystal composition including: a polymerizable liquid crystal compound capable of expressing birefringence with inverse wavelength dispersion; a surfactant containing a fluorine atom; and a solvent, wherein the surfactant contains a fluorine atom at a ratio of 30% by weight or less in a molecule of the surfactant.

The present invention describes composite materials presenting an optical, electrical or optoelectronic response to stimuli, respective production method and application as sensitive films for the detection or quantification of a variety of analytes and analyte patterns, including but not limited to volatile organic compounds (VOC), vapors and gases, biomolecules, microorganisms, viruses, cells, and particles, as well as differences of temperature, pressure and electromagnetic fields. The composite material contains a mixture of (i) at least one liquid crystal; (ii) at least one ionic liquid or molecules with surfactant properties; (iii) polymer(s), preferably with natural or synthetic origin; (iv) appropriate solvent(s); optionally (v) a stabilizing element, such as sorbitol; and (vi) an electrolyte, which can be dispensed when the sensitive film is used to obtain an exclusively optical response or when the ionic liquid(s) or surfactant(s) are also conducting materials.

Provided is an optical film and an electroluminescence display device that suppress a decrease in transmittance of a front surface and suppress a change in tint in an oblique direction with respect to the front surface, in a case of being used in a micro LED. The optical film includes a light absorption anisotropic layer containing a dichroic coloring agent compound, in which the light absorption anisotropic layer has an absorption axis in a normal direction of the film and has an alignment degree of 0.7 or greater at 530 nm, and in a case where transmittances at 460 nm, 530 nm, and 630 nm in a direction of 45 with respect to the normal direction of the film are respectively defined as Tb, Tg, and Tr, relationships of Expressions 0.1Tb/Tr0.5 (1) and 0.2Tg/Tr0.6 (2) are satisfied.

This invention relates to a process for the preparation of monodisperse optical and shape anisotropic polymer particles comprising monomer units of at least one reactive mesogen, such particles per se, the use of these particles for the preparation of optical, electrooptical, electronic electrochemical, electrophotographic, electrowetting and electrophoretic displays and/or devices and security, cosmetic, decorative, and diagnostic applications, and electrophoretic fluids and displays.

The present disclosure discloses a liquid crystal composition. The liquid crystal composition includes the following components in their respective mass percentages: 8%-50% of a polymerizable liquid crystal monomer; 1%-30% of a chiral reagent; 0.1%-5% of a photoinitiator; and 30%-70% of an organic solvent, wherein the liquid crystal composition after being cured exhibits visual angle dependent optical effect. In this way, the liquid crystal composition of the present disclosure includes no pigment particles or liquid crystal microcapsules, can be UV cured into film, and is applicable to being printed onto various substrates through gravure or flexo printing, so that it has a promising application prospect.

A liquid crystal alignment agent capable of forming a liquid crystal alignment film having good environmental resistance, the liquid crystal alignment film, and a liquid crystal display element having the liquid crystal alignment film are provided. The liquid crystal alignment agent includes a polymer (A), a benzotriazole compound (B) containing an epoxy group, and a solvent (C). The polymer (A) is obtained by reacting a mixture including a tetracarboxylic dianhydride component (a1) and a diamine component (a2).

This invention relates to a process for the preparation of monodisperse optical and shape anisotropic polymer particles comprising monomer units of at least one reactive mesogen, such particles per se, the use of these particles for the preparation of optical, electrooptical, electronic electrochemical, electrophotographic, electrowetting and electrophoretic displays and/or devices and security, cosmetic, decorative, and diagnostic applications, and electrophoretic fluids and displays.

Liquid crystal compositions comprising a crude liquid crystal sample containing ions and polyamide particles are disclosed. Upon separation of the polyamide particles from the crude liquid crystal sample, a purified liquid crystal sample is produced, which shows a 1-2 reduction in ion concentration. Methods for carrying out purification processes are also disclosed.