392 results about "Mesogen" patented technology

The invention relates to novel calamitic mesogenic compounds which are especially suitable for use in birefringent films with negative optical dispersion, to novel liquid crystal (LC) formulations and polymer films comprising them, and to the use of the compounds, formulations and films in optical, electrooptical, electronic, semiconducting or luminescent components or devices.

The present invention provides a pattern forming method using phase separation structure of self-assembling block copolymer and minimizing variations in pattern. A substrate having groove structure pre-formed thereon, is coated with a solution of the block copolymer comprising at least one block having a mesogen group. The block copolymer is caused to self-assemble in the groove to form block copolymer assemblies, which are regularly arrayed. The invention also relates to a processing method of processing a substrate by the use of the pattern obtained by the pattern forming method as a template.

The invention relates to a method of preparing a broadband reflective polarizer comprising the blending a first mixture A comprising at least one achiral polymerizable mesogenic compound with a second mixture B comprising at least one chiral polymerizable mesogenic compound; and coating a layer of the blended mixture onto a first substrate and aligning the chiral mesogenic material in a planar orientation so that the axis of the molecular helix extends transversely to the layer.

The invention relates to electrooptical light modulating elements, to electrooptical displays containing elements of this type, and to display systems, e.g. television screens and computer monitors, and to the modulating media used therein. The inventive light modulating elements contain a mesogenic modulating medium that exists in an optically isotropic phase when the light modulating elements are in operation and, in addition to having a good contrast, a low dependency on the viewing angle and very short switching times, they are particularly characterized by having relatively low driving voltages with a very low dependency on temperature. The inventive modulating media are characterized in that they contain a chiral constituent. They preferably also contain an achiral constituent. Especially preferred, the control media comprise a blue phase.

A liquid crystal display device that includes an array substrate, an opposite substrate and a liquid crystal display layer is described. The array substrate includes a pixel electrode and a lower alignment layer. The pixel electrode has a plurality of slit portions extending in different directions. The lower alignment layer includes a reactive mesogen (RM) diamine is formed on the pixel electrode to induce an alignment direction of the liquid crystal molecules. An upper alignment layer is formed on a common electrode of the opposite substrate. The RM is cured at surfaces of the lower and upper alignment layers in response to ultraviolet (UV) light, so that liquid crystal molecules have a pretilt angle. Therefore, the aperture ratio and the response time may be improved, and afterimages may be decreased, so that display quality may be improved.

Compounds including at least one mesogenic substructure and at least one long flexible segment and methods of synthesizing the same are disclosed. Formulations which include various embodiments of the mesogen containing compounds and their use in articles of manufacture and ophthalmic devices are also disclosed.

The invention relates to new polymerizable mesogenic or liquid crystalline compounds comprising a terminal cyclohexylphenyl group wherein the phenyl group has polar substituents, to polymerizable mesogenic or liquid crystalline mixtures and anisotropic polymers prepared thereof, and to the use of the new compounds and the mixtures and polymers prepared thereof in optical and electrooptical devices, adhesives, synthetic resins with anisotropic mechanical properties, cosmetics, diagnostics, liquid crystal pigments, decorative and security applications, nonlinear optics, optical information storage, electronic devices like organic field effect transistors (FET or OFET) or electroluminescent devices.

The invention reports on the use of multi-reactive polymerizable surfactants in mixtures of polymerizable mesogenic materials. The polymerizable surfactants are readily polymerized into the liquid crystal film and build a protective topcoat layer. The invention also relates to a method of producing polymeric optical films with improved stability by using the surfactants. Uses of these films are given for various applications including security applications and displays.

In a method of forming a liquid crystal display device, a black matrix is disposed on a substrate including a switching element formed thereon, a color filter is disposed on the switching element, a pixel electrode is electrically connected to the switching element, and a first alignment layer is disposed on the pixel electrode, to form a first substrate. A second substrate including a second alignment layer is formed. At least one of the first alignment layer and the second alignment layer includes a reactive mesogen. A liquid crystal layer is interposed between the first substrate and the second substrate. A light is irradiated onto the second substrate to provide pretilt angles of liquid crystal molecules of the liquid crystal layer.

A method for controlling positive birefringence in an optical compensation film (positive C-plate) having high positive birefringence throughout the wavelength range 400 nm<λ<800 nm is provided. The method includes selecting polymers with optically anisotropic subunits (OASUs) that exhibit the buttressing effect, wherein the OASUs may be disks, mesogens or aromatic rings substituted with birefringence enhancing substituents. The method further includes processing the polymer by solution casting to yield a polymer film with high birefringence without the need for stretching, photopolymerization, or other processes. These optical compensation films may be used in LCDs, particularly IPS-LCDs.

The present invention relates to a non-amphiphile-based water-in-water emulsion composition. The non-amphiphile-based water-in-water emulsion composition includes a water-soluble polymer, a non-amphiphilic lyotropic mesogen encapsulated by the water-soluble polymer; and water. In one embodiment, the non-amphiphilic lyotropic mesogen includes, without limitation, a lyotropic chromonic liquid crystal, and more specifically disodium cromoglycate (DSCG). In another embodiment, the water-soluble polymer can include, without limitation, a polyacrylamide, a polyol, a polyvinylpyrrolidone, a polysaccharide, or a water-soluble fluoride-bearing polymer. The present invention also relates to a porous hydrogel made with the use of the non-amphiphile-based water-in-water emulsion. The present invention further relates to using the emulsion and hydrogel for various applications.

The present invention relates to a composition for liquid crystal alignment layer used to provide a liquid crystal alignment layer that exhibits excellent alignment and maintains stable alignment without disturbance despite external stress such as electrical/thermal stress, a liquid crystal alignment layer, and a liquid crystal cell. The composition for liquid crystal alignment layer comprises a norbornene-based polymer having a photoreactive group, a binder, a reactive mesogen, and a photoinitiator.

Provided are a proton-exchange membrane of which the ionic conductivity is high and the methanol crossover is low, and a fuel cell of high power that comprises the proton-exchange membrane. The proton-exchange membrane has a structure of mesogen-containing organic molecular chains and a proton-donating group-containing group covalent-bonding to a silicon-oxygen three-dimensional crosslinked matrix, in which at least a part of the organic molecular chains are oriented to form an aggregate thereof; and the fuel cell comprises the membrane.

A process for forming a light emitting polymer wherein photopolymerization is carried out using a reactive mesogen having an endgroup susceptible to photopolymerization, e.g., by a radical polymerization process. Also, the light emitting polymer produced and methods for using the light emitter in displays, backlights, electronic apparatus and security viewers.

A liquid crystal display includes: a first substrate, a second substrate facing the first substrate, a field generating electrode disposed on at least one of the first substrate and the second substrate and a liquid crystal layer interposed between the first substrate and the second substrate. The liquid crystal layer includes liquid crystal molecules and an alignment polymer. The alignment polymer is formed by light-irradiating the liquid crystal molecules and an alignment aid. The alignment aid includes a mesogen having halogen atoms and at least one photo-polymerizable group combined to the mesogen, and the alignment aid is electrically neutral or quasi-neutral.

A method of molding a composition comprising a thermotropic liquid crystalline polymer (TLCP) comprising mesogens; providing a mold having a mold cavity, with a feature cavity (43) comprising a fine feature chamber; heating the composition to form molten composition; filling the fine feature chamber with molten composition moving at a flow velocity that causes flow alignment of at least a portion of the mesogens in the molten TLCP filling the fine feature chamber (49), relative to a flow direction of the moving molten composition; and solidifying the molten composition such that mesogens of at least the solidified TLCP in the fine feature chamber maintain their flow alignment. A molded article comprising a body and a 3-dimensional structural feature protruding out from the body and comprising a fine feature element having a minor dimension, with TLCP mesogens across the minor dimension being in a flow aligned state.

A composition for a polarizing film including a polymer, a dichroic dye, and a liquid crystal oligomer, wherein the liquid crystal oligomer includes a mesogen unit and a kink-forming arylene unit, a polarizing film including the composition, and a display device including the polarizing film.

The invention relates to new polymerisable mesogenic or liquid crystalline compounds comprising a laterally substituted cinnamate group, to polymerisable mesogenic or liquid crystalline mixtures and anisotropic polymers prepared thereof, and to the use of the new compounds and the mixtures and polymers prepared thereof in optical and electrooptical devices, adhesives, synthetic resins with anisotropic mechanical properties, cosmetics, diagnostics, liquid crystal pigments, decorative and security applications, nonlinear optics, optical information storage, electronic devices like organic field effect transistors (FET or OFET), electroluminescent devices, or as chiral dopants.

A composite of an organic monomer compound and an organic or inorganic salt, wherein the organic monomer compound comprises an ion-complexing moiety, a mesogen moiety that expresses a liquid crystalline phase and a polymerizable moiety in its molecular structure, is polymerized at the polymerizable moiety of the organic monomer compound, thereby forming an anisotropic ion-conductive polymeric liquid crystalline composite as a novel material having high ion conductivity characteristic of polymeric electrolytes, anisotropy due to orientation of a liquid crystal, and self-supporting properties characteristic of polymeric compounds.

In a display panel and a method of manufacturing the display panel, the display panel includes a display substrate including a first electrode and a second electrode insulated from the first electrode and disposed on the first electrode, an opposite substrate including a third electrode facing the second electrode, and a liquid crystal layer interposed between the display substrate and the opposite substrate. The liquid crystal layer includes liquid crystal molecules, a reactive mesogen polymer, and nano-rods.

A broad band cholesteric liquid crystal film of the present invention is a cholesteric liquid crystal film obtained by coating a liquid crystal mixture containing a polymerizable mesogen compound (a), a polymerizable chiral agent (b) and a photoisomerizable material (c) on a substrate to ultraviolet polymerize a coat of the liquid crystal mixture, and has a reflection bandwidth of 200 nm or more. A broad band cholesteric liquid crystal film of the present invention has a broad reflection band, is of a thin type and can be manufactured in less of manufacturing steps.

The invention discloses a self-healing liquid crystalline elastomer based on a chitin-type liquid crystal and a preparation method of the self-healing liquid crystalline elastomer. According to the self-healing liquid crystalline elastomer disclosed by the invention, the chitin-type liquid crystalline elastomer with the self-healing capability is constructed by introducing a reversible covalent-multiple hydrogen bond; due to self-healing introduction, cracks in the material can be remarkably reduced, the comprehensive performances and the reusability of the material are improved, and the service life of the material is prolonged. The preparation method comprises the following steps: firstly, selecting proper reaction materials and reaction paths, synthesizing a monomer containing the multiple hydrogen bond and a side group, with a large volume, containing a mesogenic unit, carrying out reaction on the monomer and the side group by virtue of a liquid crystalline monomer with connection of a short spacer and a double bond under the proper reaction conditions to design and synthesize a chitin-type effect polymer, regulating the dosage of a hydrogen bond crosslinking agent, and preparing the chitin-type self-healing liquid crystalline elastomers in different crosslinking degrees under the condition without influencing the liquid crystallinity.