17 results about "Polymeric liquid crystal" patented technology

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.

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.

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.

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.

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 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 black PDLC dimming film comprises a first flexible base material, a first conductive layer, a polymer liquid crystal layer, a second conductive layer and a second flexible base material which are stacked in sequence, a liquid crystal material in the polymer liquid crystal layer comprises liquid crystal molecules and dye molecules doped in high-molecular polymers, and dielectric anisotropy epsilon of the liquid crystal molecules is positive. The polaroid is arranged on a path of emergent light of the polymer liquid crystal layer, the structure of the polaroid can be similar to an optical filter, and light in a certain specific polarization direction can selectively pass through the polaroid, so that scattered light in other directions can be blocked. The color of the polaroid is gray black, and the combination of the two can change the effect that the traditional PDLC dimming film is not high enough in grade due to the foggy white color, so that the PDLC dimming film is suitable for higher-grade application scenes.

This invention discloses a PDLC dimming film with a wide light response range and high photoexcitation efficiency, comprising a first transparent conductive layer, a polymer-liquid crystal composite material layer, and a second transparent conductive layer stacked sequentially. The polymer-liquid crystal composite material layer comprises photopolymerizable monomers, crosslinking agents, liquid crystals, photoinitiators, and AgVO3 nanowires. In the raw materials, the weight percentage of the photopolymerizable monomers is 1 to 5 times that of the crosslinking agent; the weight percentage of the photoinitiator is 0.5 to 2% of the sum of the weight percentages of the photopolymerizable monomers, crosslinking agents, and liquid crystals; and the weight percentage of the AgVO3 nanowires is 0.25 to 0.60% of the sum of the weight percentages of the photopolymerizable monomers, crosslinking agents, and liquid crystals. This invention creatively introduces AgVO3 nanowires into the PDLC dimming film, which, in synergy with the other components, exhibits a wide light response range and high photoexcitation efficiency.

The invention provides an atomization lens module and a camera, glasses and a mobile phone using the atomization lens module, the atomization lens module comprises a box body, an atomization lens main body, a mounting structure and a driving structure, and the atomization lens main body is provided with a polymer liquid crystal layer and ITO conductive layers at two sides; and the driving structure is linked with the target equipment and outputs or stops driving the alternating current electric field according to the working or standby state of the target equipment, so that the transparency of the polymer liquid crystal layer and automatic switching of the atomization state are realized. The structure is applied to target equipment, imaging is not affected during shooting, the working state is visually prompted, and the lens is shielded during standby; automatic light transmission state switching based on the equipment working condition is achieved, manual intervention is not needed, the contradiction between lens concealment and privacy protection is effectively solved, and meanwhile the defect that the equipment working state is not visually prompted is overcome.

This invention discloses a functional polymer / liquid crystal composite semiconductor micro / nano laser and its fabrication method. This laser utilizes the Rayleigh instability of the cylindrical liquid interface to form a functional polymer / liquid crystal spindle structure with a specific morphology on the surface of semiconductor micro / nanowires. This constructs a composite optical microcavity that enhances optical field confinement and suppresses radiation loss, thereby improving the quality factor of the resonant cavity, compressing the resonant linewidth, and lowering the laser threshold. Furthermore, by controlling the size parameters of the functional polymer / liquid crystal spindle and its coverage position on the semiconductor micro / nanowire surface, effective control of the resonant mode is achieved. Based on the relevant properties of the semiconductor material and the polymer / liquid crystal cladding material, this invention exhibits excellent photostability under pulsed light pumping and long-term detection conditions, significantly enhancing the device's specific recognition capability of analyte molecules and its high-sensitivity sensing performance.

The invention discloses a polymer dispersed liquid crystal dimming film and a preparation method and application thereof, and belongs to the technical field of liquid crystal materials.The polymer dispersed liquid crystal dimming film comprises a first transparent conducting layer, a polymer liquid crystal composite material layer and a second transparent conducting layer which are sequentially stacked, the polymer liquid crystal composite material layer is prepared from the following raw materials: an ultraviolet polymerizable monomer, a cross-linking agent, liquid crystal and an ultraviolet initiator; the ultraviolet polymerizable monomer comprises acrylic ester with hydroxyl, acrylic ester with a large group at the tail end and acrylic ester with an alkyl chain at the tail end. According to the PDLC light adjusting film, the adhesion strength exceeds 285N, the contrast ratio exceeds 120, the problems that in the prior art, a PDLC light adjusting film is insufficient in adhesion strength and low in contrast ratio in an outdoor scene are solved in a targeted mode, and the PDLC light adjusting film can be widely applied to the fields of outdoor intelligent windows, automobile sunroofs and the like.

The invention provides a patterned phase difference plate and a manufacturing method thereof. The patterned phase difference plate which is large in area and excellent in long-distance dimensional stability of a phase difference region is manufactured through a relatively simple method. The patterned phase difference plate is manufactured by a method including a step of applying a liquid crystal aligning agent to form a coating film, a step of exposing the coating film through a photomask to form a photo-alignment film, and a step of applying polymerizable liquid crystal on the photo-alignment film and hardening the polymerizable liquid crystal to form a liquid crystal layer. The liquid crystal aligning agent contains a polymer having a cinnamate structure, an azobenzene structure or a main chain decomposition type structure. The glass substrate is provided with an alignment mark part serving as an alignment index for the glass substrate on a substrate surface on which the liquid crystal aligning agent is coated. In the scanning exposure, the relative position of the photomask with respect to the alignment mark portion is detected, and the coating film is irradiated with radiation while the relative position of the photomask with respect to the glass substrate is corrected on the basis of the detection result.

The objective of this invention is to provide an optical film, an optical laminate, and an image display device that, when used in self-emissive image display devices employing inorganic EL elements and organic EL elements, can achieve both anti-reflective properties against external light and improved utilization efficiency of light emitted by the light-emitting element. The optical film of this invention is an anisotropic light-absorbing film formed from a cured liquid crystal composition comprising a polymeric liquid crystal compound and a dichroic pigment compound. The anisotropic light-absorbing film has a region A with an inclination of θA relative to the absorption axis of the film surface and a region B with an inclination of θB relative to the absorption axis of the film surface within the same film surface, and θA and θB satisfy the following relationships: |θA-θB|≥10° (Equation (1)) and 0°≤θB≤5° (Equation (2)).

The application discloses a holographic 3D display system based on a polymer liquid crystal scattering film, combines a spatial light modulator (SLM) with ML-PDLCs, calculates holograms of different layers of an object to be displayed first, then reproduces the holograms through the SLM, places ML-PDLCs at the reproduction image positions, and the reproduction images of different layers correspond to the ML-PDLC film layers one by one. The ML-PDLCs are used as a projection two-dimensional image receiving screen of the SLM, all the film layers of the ML-PDLCs are in a transparent state under power supply at the beginning, when an image of a layer is reproduced, the corresponding film layer is in a scattering state under power-off, and the reproduction image is displayed on the film layer. All the broken layer holograms are displayed one by one, the corresponding ML-PDLC film layers are sequentially powered on and powered off, and the reproduction image is sequentially displayed on the corresponding film layers. Assuming that the object is decomposed into N layers, the ML-PDLCs are used as the projection two-dimensional image receiving screen of the SLM, the projection frame frequency of the SLM and the power-on time sequence of the ML-PDLC film layers are controlled, different two-dimensional images can be projected to different ML-PDLC film layers for display, and a complete three-dimensional image with continuous depth can be seen.

The application discloses a polymer dispersed liquid crystal composition, a polymer dispersed liquid crystal film and a preparation method thereof. The polymer dispersed liquid crystal composition is prepared from the following components in a mass ratio: a polymerizable monomer composition, a nematic liquid crystal, and a photoinitiator; the polymerizable monomer composition comprises at least one (meth)acrylic monomer with a terminal quaternary ammonium salt structure, and the mass percentage of the (meth)acrylic monomer is 20-50%; the mass percentage of the nematic liquid crystal is 50-80%; and the photoinitiator accounts for 0.5-2.5% of the total mass of the acrylic monomer and the liquid crystal. By introducing the acrylic monomer with a strong polar terminal, an ordered anchoring layer is formed at the polymer liquid crystal interface during the curing process, the driving voltage is significantly reduced to about 20 V, the response time is shortened to less than 100 ms, and the polymer dispersed liquid crystal composition is suitable for low-power consumption applications such as smart light-adjusting glass.