62 results about "Polymeric liquid crystal" patented technology

The invention relates to the technical field of fiber preparation, in particular to a liquid crystal polyarylester polymer, a liquid crystal polyarylester fiber and a preparation method.The preparation method of the liquid crystal polyarylester polymer comprises the steps that under the inert gas atmosphere, p-hydroxybenzoic acid, fluorine-containing benzoic acid monomers, 2-hydroxy-6-naphthoic acid and a catalyst are added into acetic anhydride; heating to carry out prepolymerization reaction; and after the prepolymerization reaction is finished, keeping the inert gas atmosphere, raising the temperature, carrying out polycondensation reaction, continuously discharging acetic anhydride in the polycondensation reaction process, controlling the viscosity of the reaction polymer, and obtaining the liquid crystal polyarylate polymer after the reaction is finished. The liquid crystal polyarylester polymer is subjected to melt spinning to prepare the liquid crystal polyarylester fiber. The liquid crystal polyarylester fiber has good mechanical properties and low water absorption, has high cohesiveness with other materials due to excellent interface compounding performance, and has wide application prospects in the fields of 5G communication and the like.

A liquid crystal composition contains a side chain type polymer liquid crystalline compound which can form a light absorption anisotropic film having a high alignment degree and has excellent solubility in a general-purpose solvent, a light absorption anisotropic film obtained using the composition, a laminate, and an image display device. The composition includes: a side chain type polymer liquid crystalline compound; and a dichroic substance, in which the compound is a copolymer having a repeating unit (1) containing a mesogenic group with a molecular weight of greater than 280 and a repeating unit (2) with a molecular weight of 280 or less, a content of the repeating unit (2) is less than 14% by mass with respect to a total mass of the compound, and a content of the dichroic substance is greater than 2% by mass with respect to a total solid content of the composition.

A light-emitting module and a display device are provided. The light-emitting module includes a light-emitting plate and a first light-adjusting plate, and the first light-adjusting plate is located on a light-exiting side of the light-emitting plate. The first light-adjusting plate includes: a first polymer liquid crystal layer including polymer networks and liquid crystal molecules dispersed in the polymer networks; and a first electrode layer and a second electrode layer disposed oppositely on two sides of the first polymer liquid crystal layer. The first electrode layer includes at least two first electrodes spaced apart.

The invention relates to the technical field of flexible sensors, and particularly discloses breathable ion skin which comprises water, a polymer, a liquid crystal and a conductive ion active substance. The material with unique soft elasticity is prepared by combining the orderly-oriented liquid crystal material and the polymer elastomer, the excellent adhesion stability can be kept under the cyclic load, and the stripping interface toughness is high. The composite fiber membrane of a liquid crystal elastomer core-ion skin shell structure is prepared through coaxial electrostatic spinning, the liquid crystal elastomer core provides good structural stability and adhesion stability, the ion skin shell provides good signal detection capacity, and meanwhile, the porous membrane structure prepared through electrostatic spinning has the ultrahigh water vapor permeability and can be used for preparing the composite fiber membrane of the liquid crystal elastomer core-ion skin shell structure. Sweat generated at the contact site of the ion skin and the human skin can be quickly volatilized, sweat accumulation is reduced, and the human skin does not have inflammatory response after the ion skin is worn for a long time.

Provided is a novel diamine which, when used as a starting material for a polymer constituting a liquid crystal alignment film, is capable of forming a liquid crystal alignment film having a high voltage holding ratio while suppressing a reduction in the molecular weight of the polymer during firing. A diamine represented by any one of the following formulae (dA-1) to (dA-6). # imgabs0 #

One embodiment of the present application provide a polymer dispersed liquid crystal display including a first electrode; a second electrode on the first electrode; and a PDLC layer disposed between the first electrode and the second electrode; wherein the PDLC layer includes a liquid crystal droplet and a polymer surrounding the liquid crystal droplet, the liquid crystal droplet has a size in the range of 0.8 to 1.5 μm, the PDLC layer has a thickness in the range of 15 to 25 μm, and wherein the polymer dispersed liquid crystal display has multiple domains driven individually.

The present invention addresses the problem of providing a cured film-forming composition for forming a cured film for forming an alignment material which has excellent solvent resistance, can align polymerizable liquid crystals with high sensitivity, and has little liquid crystal rejection. [Solution] A composition for forming a cured film, an alignment material, and a phase difference material. The composition for forming a cured film contains (A) a compound having a photo-alignment group, (B) a polymer having a structural unit having an N-hydroxymethyl group or an N-alkoxymethyl group, and (C) a cyclodextrin derivative in which some or all of hydroxyl groups are modified.

The invention discloses a preparation method of a polymer liquid crystal material with nano Bi2S3 wrapped by polyacrylonitrile. The preparation method comprises the following steps: preparation of nano Bi2S3 powder, preparation of a PAN solution, preparation of Bi2S3 and PAN composite spheres, and compounding of nematic liquid crystals and the nano Bi2S3 and PAN composite spheres. The polyacrylonitrile-coated nano Bi2S3 polymer liquid crystal material disclosed by the invention shows excellent optical performance, and the average light transmittance of the polyacrylonitrile-coated nano Bi2S3 polymer liquid crystal material in a visible light range is gt; moreover, the material has high contrast and short response time, and meets the high-dynamic display requirement; in addition, the material also shows excellent thermal stability and thermal decomposition temperature gt; the stable performance can be kept at the high temperature, and the high-temperature-resistant coating is suitable for various harsh application scenes.

According to the diffusion plate, the display module and the display device, the diffusion plate comprises the first electrode layer, the second electrode layer and the polymer liquid crystal layer arranged between the first electrode layer and the second electrode layer, and the polymer liquid crystal layer can be regulated and controlled by applying or not applying an electric field between the first electrode and the second electrode; further, the diffusion plate can be controlled to realize switching between a haze state and a transparent state, and the size of the haze of the diffusion plate can be controlled by adjusting the intensity of the applied electric field; the packaging layer with the large haze is arranged on the side, away from the polymer liquid crystal layer, of the first electrode layer and / or the second electrode layer, light emitted from the diffusion plate can be further atomized, the haze adjusting capacity is improved, and flexible and variable adjustment of the haze is achieved. When the diffusion plate is applied to the display module, switching between the haze state and the high-definition transparent state of the display module can be achieved, flexible switching between education products and entertainment products can be achieved, and the haze of the display module can be flexibly adjusted.

Provided is a black PDLC dimming film, including a first flexible substrate, a first conductive layer, a polymer liquid crystal layer, a second conductive layer, a second flexible substrate sequentially laminated. The liquid crystal material within the polymer liquid crystal layer includes a polymer doped with liquid crystal molecules and dye molecules with positive dielectric anisotropy Δε. A polarizer is provided in a path of light emitted from the polymer liquid crystal layer, and the structure of the polarizer may be approximated as a filter, which has the effect of select a portion of the light travelling in a specific polarization direction, and block scattered light in other directions. The color of the polarizer itself is gray-black, the combination of the two can change the traditional PDLC dimming film itself matte white is not enough senior effect, so that it is suitable for more high-end application scenarios.

The invention provides a polymerizable liquid crystal mixture not prone to precipitation, a polymerizable composition containing the polymerizable liquid crystal mixture and a phase difference film, and relates to the technical field of optical material preparation. The polymerizable liquid crystal mixture contains a polymerizable liquid crystal compound A and a polymerizable liquid crystal compound B having different structures. The phase difference film prepared from the polymerizable composition is not easy to crystallize in the manufacturing process, has good surface morphology, and shows excellent reverse wavelength dispersibility.

The application discloses a display device with switchable viewing angle and a driving method thereof. The display device comprises a backlight module and a display panel, and the display panel can be switched between a wide viewing angle and a narrow viewing angle. The backlight module comprises a backlight source and a first liquid crystal box, and the first liquid crystal box is used for controlling the astigmatic range of the backlight module. The first liquid crystal box comprises a first substrate, a second substrate and a polymer liquid crystal layer between the first substrate and the second substrate. When the display device displays in the wide viewing angle, the display panel is switched to the wide viewing angle mode, and the astigmatic range of the backlight module is adjusted to control the viewing angle range of the wide viewing angle display. When the display device displays in the narrow viewing angle, the display panel is switched to the narrow viewing angle mode, and the astigmatic range of the backlight module is adjusted to control the viewing angle range of the narrow viewing angle display. By arranging the first liquid crystal box in the backlight module, the astigmatic range of the backlight module can be adjusted arbitrarily, so that the display device has a large adjustable viewing angle range when displaying in the wide viewing angle and the narrow viewing angle.

A virtual image display device includes a display, and an optical member, in which the optical member includes a lens member, a transmissive reflective optical element provided facing a first optical surface of the lens member that is close to the display, a reflective polarizing optical element provided facing a second optical surface of the lens member that is far from the display and reflects first polarized light, that is, image light linearly polarized light in a first polarization direction, and a wave plate provided between the reflective optical element and the polarizing optical element, is formed of a photo-crosslinkable polymeric liquid crystal material, converts the image light, that is, linearly polarized light in the first polarization direction, and converts the image light, that is reflected by the reflective optical element to reciprocate, into second polarized light in a second polarization direction.

Provided are a liquid crystalline resin composition which has good fluidity, and from which a molded body that is excellent in terms of low-dust generation properties, low slide wear properties, low warping properties, and suppression of inward collapse deformation in a well-balanced manner is obtained, and a camera module using the same.　A liquid crystalline resin composition according to the present invention contains (A) a liquid crystalline resin, (B) a granular filler, (C) a plate-shaped filler, and (D) an olefin-based polymer, wherein: the median diameter of the component (B) is 0.3 µm to 8 µm; the median diameter of the component (C) is 10 μm to 50 μm; the component (D) includes an epoxy group-containing olefin-based polymer; and with respect to the entire liquid crystalline resin composition, the content of the component (A) is 52% by mass to 82% by mass, the content of the component (B) is 2.5% by mass to 35% by mass, the content of the component (C) is 5% by mass to 35% by mass, the total content of the component (B) and the component (C) is 15% by mass to 45% by mass, the content of the component (D) is 1.50% by mass to 6.00% by mass, and the content of the epoxy group is 0.003% by mass to 0.050% by mass.

The invention relates to a half-wave plate comprising two layers of a chiral liquid crystal (LC) polymer with a pitch gradient (as a subcategory of liquid crystal material), a method for its preparation, and its use as diffractive optical element in optical or electrooptical components or devices, especially for digital optics or augmented reality or virtual reality (AR / VR) applications like polarizers, optical compensators, reflective films, diffraction or surface gratings, Bragg polarization gratings (Bragg PG), polarization volume gratings (PVG), polarization volume holograms (PVH), Pancharatnam Berry (PB) gratings, nonmechanical beam steering elements, optical waveguides, optical couplers, optical combiners, polarization beam splitters, partial mirrors or lenses.

The invention provides an insulated wire, a method for manufacturing the insulated wire, and a coil and an electronic device using the insulated wire. The insulated wire includes a conductor and an insulating layer laminated on an outer peripheral side of the conductor. The insulating layer includes a liquid crystal polyester (A) and a polymer (B). The liquid crystal polyester (A) is obtained by reacting a first mixture, and the first mixture comprises an aromatic hydroxycarboxylic acid (a1), an aromatic dicarboxylic acid (a2), an aromatic amine (a3) having a phenolic hydroxyl group, and an aromatic diol (a4). The polymer (B) is selected from at least one of a group consisting of a polyimide precursor and an imidized polymer of the polyimide precursor, and the polymer (B) includes an ester group structure. Therefore, the insulated wire can have good coating property and flexibility.

To provide an alignment layer forming material giving an alignment layer having high light transmittance in a transmissive state and high adhesion between a polymer liquid crystal layer and a substrate.SOLUTION: A compound represented by the following formula (C2) or (C3): SELECTED DRAWING: None

A backlight module and a display device are provided by the embodiments of the present application. The backlight module includes a light guide plate and a switchable diffusion sheet. The switchable diffusion sheet further includes a first conductive layer and a second conductive layer disposed opposite to each other. A polymer liquid crystal layer is disposed between the first conductive layer and the second conductive layer. In the backlight module of the embodiment of the present application, a thick glass in the prior art is replaced with the first conductive layer and the second conductive layer which are lighter and thinner than the thick glass, which can greatly reduce an overall thickness of the backlight module.

The utility model discloses a display device and a three-dimensional display system. The display device comprises a display panel and a phase retarder. The display panel is used for emitting ray polarized light. The phase retarder is located on the display side of the display panel and comprises a light alignment layer and a polymer liquid crystal layer. And the first alignment area and the second alignment area of the optical alignment layer respectively align the polymer liquid crystal layer along the first alignment direction and the second alignment direction. The display panel comprises a first part of pixel units and a second part of pixel units; the first part of pixel units fall into the orthographic projection of the first alignment area on the display panel, and the second part of pixel units fall into the orthographic projection of the second alignment area on the display panel, so that three-dimensional display can be realized by using elliptically polarized light or circularly polarized light with different rotation directions, and the user experience is improved.

One embodiment of the present application provide a polymer dispersed liquid crystal display including a first electrode; a second electrode on the first electrode; and a PDLC layer disposed between the first electrode and the second electrode; wherein the PDLC layer includes a liquid crystal droplet and a polymer surrounding the liquid crystal droplet, the liquid crystal droplet has a size in the range of 0.8 to 1.5 µm, the PDLC layer has a thickness in the range of 15 to 25 µm, and wherein the polymer dispersed liquid crystal display has multiple domains driven individually.

A polymer liquid crystal dimming box, a manufacturing method thereof, and a display module are provided. The polymer liquid crystal dimming box includes a first substrate, a second substrate, a polymer liquid crystal layer, a frame adhesive layer and a light-shielding structure. The light-shielding structure is disposed between the frame adhesive layer and the polymer liquid crystal layer and surrounds the polymer liquid crystal layer. The light-shielding structure is used to absorb ultraviolet light obliquely incident during the curing process of the frame adhesive layer. In this way, the problem that the polymer liquid crystal layer is cured in advance due to ultraviolet light irradiation can be avoided, the edge failure of the polymer liquid crystal dimming box can be improved, which is conducive to mass production.

The invention relates to a liquid crystal polymer, a liquid crystal composition and a preparation method and application thereof. The zero-shear viscosity of the liquid crystal polymer is 3500-8000 Pa.s, and the melting enthalpy is greater than or equal to 1.2 J / g. The liquid crystal composition prepared from the liquid crystal polymer disclosed by the invention is not easy to fall powder under the ultrasonic action, has good flatness, also has good weld line strength, and is very suitable for preparing optical instrument parts, especially camera module workpieces.

The embodiment of the present invention discloses a trans-electrically controlled dimming film and a preparation method thereof, which belongs to the technical field of liquid crystal materials. The trans-electrically controlled dimming film includes a first transparent conductive film, a second transparent conductive film and a polymer liquid crystal film, the polymer liquid crystal film is composited between the first transparent conductive film and the second transparent conductive film to form a layered structure, the polymer liquid crystal film is prepared using a photomask, and its component raw materials include 10-40 parts by weight of ultraviolet light polymerizable monomers; 60-90 parts by weight of liquid crystals and an appropriate amount of ultraviolet light initiator and salt ions. The preparation method includes the steps of: mixing ultraviolet light polymerizable monomers, salt ions, liquid crystals and ultraviolet light initiators and loading them into a liquid crystal box to vertically align the liquid crystal molecules; then covering the liquid crystal box with a photomask and performing ultraviolet curing to obtain the trans-electrically controlled dimming film. The trans-electrically controlled dimming film prepared by the embodiment of the present invention has a high polymer monomer content and excellent cycle stability of electro-optical performance.

The invention belongs to the field of display, and particularly relates to a display panel and a display device.The display panel comprises a pixel structure layer, a first dimming structure layer and a second dimming structure layer, the pixel structure layer comprises a plurality of sub-pixels arranged at intervals, the first dimming structure layer is arranged on one side of the pixel structure layer, and the second dimming structure layer is arranged on the other side of the pixel structure layer; the first dimming structure layer comprises a first electrode layer, a polymer liquid crystal layer and a second electrode layer which are arranged in a stacked mode, the first electrode layer comprises a first electrode unit, the orthographic projection of the first electrode unit on the pixel structure layer is located in an area between sub-pixels, and the second dimming structure layer is arranged on the side, away from the pixel structure layer, of the first dimming structure layer. Or arranged between the pixel structure layer and the first dimming structure layer and used for converting the oblique light of the sub-pixels into collimated light or filtering the oblique light. A part of the polymer liquid crystal layer is controlled by the first electrode unit to form a light-transmitting state or a scattering state, a switch with a peep-proof function can be realized, and the problem that the switch with the peep-proof function of the display panel is inconvenient is solved.

A personal cleansing composition includes: (a) a surfactant system, wherein the surfactant system includes: from about 0.1% to about 5%, of a fatty acyl isethionate surfactant; from about 0.5% to about 40%, of a co-surfactant, wherein the co-surfactant is selected from the group consisting of an anionic surfactant being not an isethionate surfactant, a non-ionic surfactant, an amphoteric surfactant, a zwitterionic surfactant, and mixtures thereof; (b) from about 0.05% to about 5%, of a natural polysaccharide, a chemically modified natural polysaccharide, or a combination thereof; wherein the personal cleansing composition includes a first and second phase, wherein the first phase is an isotropic and micellar surfactant phase; wherein the second phase is a polymer liquid crystalline phase which includes polymer liquid crystals of the natural polysaccharide, the chemically modified natural polysaccharide, or the combination.

The invention belongs to the technical field of holographic optics, and particularly relates to a holographic polymer liquid crystal composite material which comprises monomers, a photosensitizer, a photo-initiation system and liquid crystals, the photosensitizer is BDEA, the photo-initiation system is HABI and MBO, the photosensitizer and the photo-initiation system form a three-component system BDEA / HABI / MBO, the monomers comprise POEA and TMPEOTA, and the TMPEOTA has Mn-692. The liquid crystal is a nematic P0616A type liquid crystal, the P0616A liquid crystal and a BDEA / HABI / MBO three-component photo-initiation system are combined and applied to a holographic polymeric material for the first time, a breakthrough is made in the aspects of improving holographic recording sensitivity and pattern resolution to form a clear polymer-liquid crystal interphase structure, and the diffraction efficiency of holographic patterns is improved. The holographic recording system with high efficiency and low energy consumption is realized, and the application range of holographic recording materials is expanded.

Provided is a liquid crystal light control element using a liquid crystal composition including a liquid crystal and a chiral compound, in which display defects due to alignment defects of the liquid crystal and burn-in defects do not occur even when the liquid crystal light control element is subjected to prolonged light irradiation.　Provided is a liquid crystal light control element having a variable transmittance in response to voltage application, the liquid crystal light control element being characterized by comprising a pair of substrates provided with electrodes, a liquid crystal layer provided between the substrates and including liquid crystal molecules twist-aligned when a voltage is not applied, a liquid crystal alignment film (A) that substantially vertically aligns the liquid crystal between one substrate and the liquid crystal layer, and a liquid crystal alignment film (B) that substantially horizontally aligns the liquid crystal between the liquid crystal layer and the other substrate, the liquid crystal layer including a chiral compound and liquid crystal having positive dielectric anisotropy, the liquid crystal alignment film (A) including a polymer having a structure indicated by formula [1], the liquid crystal alignment film (B) including a polymer having a structure indicated by formula [2], and d / p being 1 to 10, where d is the thickness of the liquid crystal layer and p is the chiral pitch of the liquid crystal of the liquid crystal layer.

The present invention provides a holographic polymer liquid crystal material, a preparation method thereof and an application thereof. In terms of mass percentage, the holographic polymer liquid crystal material comprises 20-50% of a nematic liquid crystal composition, 30-80% of an acrylate monomer, 1-20% of glue and 0.1-5% of a photoinitiator; the nematic liquid crystal composition comprises component A and component B; component A comprises at least one of the compounds having the structure shown in formula I; component B comprises at least one of the compounds having the structure shown in formula II; the acrylate monomer comprises at least one of the compounds having the structure shown in formula III. In the present invention, by selecting a nematic liquid crystal composition and an acrylate monomer having specific structures, the volume holographic grating comprising the material has high diffraction efficiency, low haze, and can be switched between a holographic state and a transparent state, and has a wide application range.

To provide a side-chain liquid crystal polymer that can lower the light energy needed for photoalignment and can form a liquid crystal polymer film having high birefringence, and a method for producing a liquid crystal polymer film using the same.SOLUTION: The side-chain liquid crystal polymer includes at least a side chain (1) having a specific side-chain structure including a cinnamic acid group, a cinnamoyl group, or a chalcone group, and a side chain (2) having a specific side-chain structure including a mesogenic group and an aldehyde group or an amino group. The production method includes at least: a film forming step of forming a polymer film including the side-chain liquid crystal polymer; a light irradiation step of irradiating the resulting polymer film with light in an amount of 1 to 350 mJ / cm2, wherein the light causes a photoreaction of the photosensitive group and enables anisotropic orientation of the mesogenic component; a heat alignment step of heating the light-irradiated polymer film to induce orientation of the unoriented mesogenic component; a condensable compound application step of applying a condensable compound to the polymer film; and a condensation reaction step of performing a condensation reaction.SELECTED DRAWING: None

The present invention provides an optical laminate that can effectively peel off a release film even when it includes a linear polarizing layer and a retardation layer; the linear polarizing layer and the retardation layer are hardened layers containing a polymeric liquid crystal compound. The optical laminate of the present invention sequentially comprises a surface protective film, a transparent resin film, a circular polarizer, a first adhesive layer, and a release film. The surface protective film can be peeled off from the transparent resin film. The circular polarizer sequentially comprises a linear polarizing layer and a first retardation layer from the transparent resin film side. The linear polarizing layer includes a first hardened layer containing a first composition of a polymeric liquid crystal compound, and the first retardation layer includes a second hardened layer containing a second composition of a polymeric liquid crystal compound. The release film can be peeled off from the first adhesive layer.