500 results about "Liquid crystal molecule" patented technology

The invention relates to the technical field of liquid crystal display, and provides liquid crystal display equipment based on a field order and a color image display method. An image to be displayed can be decomposed into three sub-frames based on a field sequential display technology, each sub-frame corresponds to a color field, when a liquid crystal panel is driven according to a main color gray scale value of the color field corresponding to each sub-frame, at least one backlight source corresponding to each color field is firstly driven to emit backlight of a first duration within a time period when liquid crystal molecules reach a steady state, and then the backlight source corresponding to each color field is driven to emit backlight of a second duration within a time period when the liquid crystal molecules reach the steady state. The white light of the second duration is emitted after the first duration, so that the white light is added in the backlight lightening stage of each color field, the color gamut range of the color field corresponding to each sub-frame is effectively reduced, and the color separation phenomenon is reduced. In addition, each subframe corresponds to a single color field or a mixed color field, so that the color separation phenomenon in various algorithms can be improved.

The invention provides a liquid crystal display lightening parameter self-adaptive calibration method, and relates to the technical field of image display. The method comprises the following steps: firstly, establishing a characteristic matrix and a parameter library of liquid crystal molecules, and dynamically correcting according to a real-time working state; and based on the characteristic matrix and the parameter library, executing pixel-level forward prediction on the input image, and generating a color error distribution diagram by solving a coupling solution of a liquid crystal molecule dynamic response differential equation and a backlight attenuation compensation equation. And taking the error distribution diagram as input, obtaining a gradient optimization direction of the calibration parameter mapping diagram through back propagation calculation, and iteratively approaching the optimal pixel value compensation amount in each frame period. And injecting a test pulse into the characteristic pixel point, capturing a voltage response curve through a sampling circuit, and converting the voltage response curve into a real-time correction value mapping graph. And finally, carrying out weighted fusion on the real-time correction value mapping graph and the pixel value compensation amount to generate a calibration parameter mapping graph. The self-adaptive calibration of the display parameters is improved, and the display consistency and the color accuracy are effectively improved.

Disclosed is a liquid crystal composition. The liquid crystal composition includes liquid crystal molecules including at least one of a liquid crystal compound having an alkenyl group and a liquid crystal compound having an alkoxy group, and a first stabilizer including a compound having a structure represented by Formula 1:where n is 0 or 1; m is 0 or 1; k is 0 or 1; Z1, Z2, and Z3 are each independently a single bond, —C═C—, —OCO—, —COO—, —CF2O—, or a C1 to C5 alkylene group; X1, X2, X3, and X4 are each independently hydrogen or halogen; Y is hydrogen, an alkylene group, an alkoxy group, a hydroxyl group, —NHCOCH3, or ═O; and A and B are cyclic compounds.

The invention provides a display module and a display device, and the display module comprises a display panel which comprises a plurality of pixel units arranged in an array; the light control device is arranged on the light emitting side of the display panel, the light control device comprises a first regulation and control layer and a second regulation and control layer which are sequentially arranged on the display panel in a stacked mode, the first regulation and control layer comprises a first refraction layer and a second refraction layer covering the first refraction layer, the first refraction layer comprises a plurality of lenses arranged in an array mode, and the second refraction layer comprises a second refraction layer covering the second refraction layer; the orthographic projection of each lens on the display panel at least covers two pixel units, the refractive index of the first refraction layer is larger than that of the second refraction layer, when the display module is in a three-dimensional display state, liquid crystal molecules in the second regulation and control layer do not deflect, and when the display module is in a two-dimensional display state, liquid crystal molecules in the second regulation and control layer do not deflect. And the second regulation and control layer is equivalent to a plurality of lens units arranged in one-to-one correspondence with the lenses. The display module provided by the embodiment of the invention can reduce view crosstalk in a three-dimensional display state.

The invention discloses a laser depilation dynamic parameter adjustment method based on skin typing recognition, and relates to the technical field of laser depilation, and the method comprises the steps: constructing a three-dimensional skin model of a depilation region through multi-dimensional data cross validation; detecting local pigmentation caused by friction in each area; detecting the blood flow signal intensity of capillary vessels around the hair follicles, judging the period of the hair and generating a hair follicle activity thermodynamic diagram in real time; a three-dimensional energy focus is formed through double-beam crossing; skin curved surface data are obtained through a pressure sensor, liquid crystal molecules in a light valve are driven to be arranged, and light spots are adjusted to be in the shape attached to an unhairing area; the basal metabolic rate of the patient is measured through a noninvasive bioelectrical impedance analysis technology, and the energy density is adjusted based on the basal metabolic rate; and establishing a digital twinborn model, and integrating depilation data, skin state and hormone level information. A three-dimensional energy focus is formed through double-beam crossing, energy is accurately focused on the root of the hair follicle, and epidermis damage is avoided.

The invention provides a photo-thermal response T-type liquid crystal molecule, a preparation method thereof and application of the photo-thermal response T-type liquid crystal molecule to an intelligent window. The structural formula of the T-type liquid crystal molecule is shown in the formula (1). According to the technical scheme, the liquid crystal molecule is in a T type, an azobenzene structure in the liquid crystal molecule is subjected to reversible conversion of cis and trans under switching of ultraviolet light and visible light, and meanwhile, a molecular structure of 8CB and a butylene adipate structure can be subjected to phase change at room temperature, so that the molecule has a light response function, and meanwhile, the light response effect of the molecule is improved. The material also has a thermal response function at room temperature; besides passive control through light and heat, after electrification, liquid crystal molecules are arranged in order, an electric response function is achieved, and the intelligent window can be actively recovered to be transparent. The molecule not only has multiple responses, but also is a low-carbon environment-friendly material. According to the technical scheme, the alkoxy chain is linked to the side chain of the liquid crystal molecule, asymmetry is increased, the liquid crystal molecule has a richer phase structure, and the liquid crystal molecule has a huge development prospect in the field of intelligent windows.

The invention relates to the technical field of liquid crystal devices, and particularly discloses a normally-on flexible liquid crystal dimming film and a preparation method thereof. The structure of the normally-on flexible liquid crystal dimming film sequentially comprises a first flexible transparent substrate, a first vertical alignment layer, a dye liquid crystal layer, a second vertical alignment layer and a second flexible transparent substrate from top to bottom, wherein the materials of the first vertical alignment layer and the second vertical alignment layer are selected from side chain type transparent polyimide materials; the dye liquid crystal layer comprises black dichroic dye and negative phase liquid crystal. By accurately controlling the orientation arrangement of liquid crystal molecules, a high-precision pretilt angle is realized, the light modulation amplitude in a visible light broadband range reaches 45% or above, and the photoelectric property is equivalent to that of a normally dark (forward) mode liquid crystal dimming film.

The invention discloses an LCoS device and a phase modulation method of the LCoS device. The LCoS device comprises a transparent electrode, a liquid crystal layer, a metasurface layer and a back plate which are sequentially arranged from the incident end to the reflecting end. A projection included angle is formed between the long axis of the metasurface layer and the liquid crystal molecule director of the liquid crystal layer on a propagation plane; the liquid crystal layer is used for performing phase modulation on a parallel first polarization component of incident light, and the conversion metasurface is used for performing polarization state exchange on the parallel first polarization component and an orthogonal second polarization component of the incident light; the back plate is used for reflecting incident light; and the liquid crystal layer is used for performing phase modulation on the exchanged second polarization component, so that the emergent first polarization component and the emergent second polarization component are subjected to phase modulation. The metasurface layer is introduced, a polarization-dependent modulator is converted into a polarization-independent modulator through two times of liquid crystal layer passing and one time of polarization conversion, and the fundamental limitation of a traditional LCoS device is solved.

The invention discloses a phase modulation method of an achromatic liquid crystal holographic lens, and belongs to the technical field of holographic optics. According to the method, the spatial orientation distribution of liquid crystal molecules is regulated and controlled, a multi-wavelength phase modulation model is constructed, and synchronous focusing of red light, green light and blue light is achieved. The method specifically comprises the following steps: calculating a liquid crystal molecule deflection angle according to an incident light wavelength and a lens position to form refractive index gradient distribution; holographic phase distribution is generated based on molecular orientation, and light rays with different wavelengths are focused to the same focus; the three-wavelength focus light intensity deviation is controlled by dynamically optimizing the phase intensity coefficient and combining finite element simulation iteration adjustment. According to the invention, the chromatic aberration phenomenon of a traditional lens is eliminated, confocal plane focusing of light with different wavelengths within a certain focal length range is realized, and the focus intensity consistency is improved. The prepared ultrathin liquid crystal lens is low in thickness, obviously improves the light focusing efficiency, and is suitable for a high-precision imaging system and display equipment.

The invention discloses an intelligent starry sky tent control method for electronic control atomization dimming glass, relates to the technical field of intelligent tent control, and aims to solve the problems that control of the electronic control atomization dimming glass in a starry sky tent mostly depends on manual operation in the prior art, and automatic adjustment is lacked according to environmental changes and personnel requirements. The atomization state of the glass is automatically and accurately adjusted according to the change of the environment temperature, when the environment temperature rises, in order to ensure that polymer dispersed liquid crystal molecules can smoothly adjust orientation and further achieve an ideal display effect, the voltage is properly increased so as to enhance the electric field force, and when the environment temperature drops, the system reduces the voltage and reduces the electric field force, so that the effect of improving the display effect is achieved. The glass can be always kept in a good transparent state no matter how the external environment temperature fluctuates, meanwhile, the voltage is reduced when the environment temperature is reduced, energy waste is effectively avoided through the measure, and the good energy-saving characteristic is embodied.

The invention discloses a reflective display device and a driving method, the reflective display device comprises a first bistable liquid crystal box and a light absorption layer, the first bistable liquid crystal box comprises a color film substrate, a first array substrate and a first bistable liquid crystal layer, the first bistable liquid crystal layer is provided with first bistable liquid crystal molecules, and the first bistable liquid crystal molecules are arranged in the first bistable liquid crystal box. All the first bistable liquid crystal molecules reflect invisible light rays in the reflection state, and the light absorption layer is arranged on the side, facing the first array substrate, of the first bistable liquid crystal box. By controlling the first bistable liquid crystal molecules to present fog states with different haze degrees, the pixels can realize gray scale display with different brightness degrees, and the haze degrees of the fog states of the first bistable liquid crystal molecules can be adjusted through the driving voltage, so that the pixels can realize more gray scales; the reflective display device can achieve color reflective display with a good display effect by being matched with the color film substrate, and is simple in structure, small in box thickness and lower in manufacturing cost.

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 a head-up display, a use method thereof, electronic equipment and a vehicle comprising the same. The head-up display comprises a backlight system, a liquid crystal display screen, a temperature sensor and a controller, the clear temperature of a liquid crystal material used by the liquid crystal display screen ranges from 105 DEG C to 150 DEG C, and the temperature sensor is arranged on the liquid crystal display screen and used for detecting the temperature of the liquid crystal display screen; the backlight system, the liquid crystal display screen and the temperature sensor are all electrically connected with the controller. The clear temperature of the liquid crystal material in the liquid crystal display screen included in the head-up display is 105 DEG C or above, even if the display screen in the head-up display is overheated due to the fact that sunlight flows backwards, the local concentrated temperature cannot exceed the clear temperature of liquid crystal molecules, then the liquid crystal molecules can be prevented from being dissolved, the liquid crystal display screen can be prevented from losing efficacy, and therefore the user experience is improved. The head-up display provided by the invention can avoid the problem of local non-display caused by sunlight backflow.

The invention provides a fullerene pyrrolidine enantiomer mediated cholesteric liquid crystal with circular polarization luminescence property and nonlinear anti-saturated absorption property, and a preparation method and application thereof. The method comprises the following steps: dissolving C60, paraformaldehyde and (R / S)-(+ / -)-alpha-methylbenzylamine in an organic solvent, and carrying out heating reflux reaction to obtain fullerene pyrrolidine enantiomer molecules; dissolving in carbon disulfide to obtain an enantiomer solution; dissolving achiral dye molecules in a solvent to obtain a dye solution; and dropwise adding the enantiomer solution and the dye solution into thermotropic liquid crystal molecules, and drying to obtain the thermotropic liquid crystal. The method is simple, the obtained cholesteric liquid crystal system shows a characteristic fingerprint texture and has a periodic spiral structure, and the doping proportion of chiral molecules is easy to adjust; the composite system has good time stability and is not prone to phase separation; the liquid crystal platform shows good circular polarization luminescence performance and third-order nonlinear optical property, and is a cholesteric liquid crystal platform with an integrated function.

A liquid crystal display device includes a liquid crystal layer disposed between first a second substrates, the liquid crystal layer including a plurality of liquid crystal molecules, a plurality of pixel electrodes and a plurality of data lines disposed over the first substrate and configured to control the orientation of the liquid crystal molecules to modulate light, a passivation layer formed over the first substrate, the passivation layer including a plurality of first filled elongated contact trenches electrically connecting a plurality of the pixel electrodes and a plurality of second filled elongated contact trenches electrically connecting a plurality of the data lines, a light shielding layer disposed over abutting portions of adjacent color filters of respective sub-pixels, the light shielding layer configured to inhibit color mixing and block cross-talk between the adjacent sub-pixels, and a backlight system configured to provide illumination through the liquid crystal layer.

The invention provides a driving method and a driving circuit of a display panel and a display device.In the driving method of the display panel, in each display frame, positive polarity gray-scale voltage and negative polarity gray-scale voltage are alternately output to pixel units, aging of liquid crystal molecules can be reduced through a polarity alternate driving mode, and meanwhile, the driving efficiency of the display panel is improved. The target gray scale voltage with the same polarity as the next frame is inserted between the adjacent display frames, charge loss caused by leakage current of the thin film transistor is compensated, additional hardware does not need to be added, the design cost and power consumption are reduced, leakage current compensation can be achieved only through time sequence optimization, the problems of ghost shadow, flicker, contrast reduction and the like are effectively solved, and the display quality is improved. And the display image quality is improved.

The invention discloses a liquid crystal performance prediction method and device based on molecular dynamics and a liquid crystal theory, and relates to the technical field of liquid crystal performance prediction.The method comprises the steps that the molecular structure of liquid crystal to be simulated is confirmed, and the molecular structure of the liquid crystal is obtained; generating a coarse graining molecular structure and a coarse graining force field parameter through a coarse graining scheme; constructing a nematic phase initial structure of the volume phase system; performing molecular dynamics simulation at a set temperature to obtain molecular dynamics simulation trajectory data, calculating to obtain a molecular director of liquid crystal molecules, and determining an overall director; a second-order-sequence parameter and a fourth-order-sequence parameter are obtained through calculation; constructing a correlation function and fitting to obtain the rotation relaxation time of the system; according to a Nemtsov-Zakharov formula or a Fialkowski formula, the rotary viscosity of the liquid crystal is obtained through calculation; constructing a change relation of the second-order-sequence parameter along with the temperature; and performing fitting analysis through a Maier-Saupe theory or a critical index formula to determine a phase change point. The liquid crystal performance prediction efficiency can be improved, the cost is reduced, and the prediction precision is improved.

The invention discloses a preparation method of a PNLC film and application of the PNLC film in an automobile intelligent dimming awning, and belongs to the technical field of liquid crystal materials for intelligent awning glass and preparation of the liquid crystal materials. The problems that an existing automobile intelligent dimming awning cannot meet the rapid dimming requirement and is poor in reliability and durability and the like are solved. A bifunctional liquid crystal monomer RM82 and a nematic liquid crystal E7 are compounded, acrylate end group polymerization of the RM82 is realized under the initiation of ultraviolet light, meanwhile, a biphenyl core structure and E7 can form a strong pi-pi conjugation effect, a phase separation energy barrier of the PNLC film is remarkably reduced, GQDs serve as a scattering enhancer, the PNLC film is endowed with a dynamic luminescence capability by utilizing the fluorescence characteristic of the GQDs, and the PNLC film has a good application prospect. The orientation of liquid crystal molecules is regulated and controlled through an electric field or temperature, the light scattering state is changed, switching of light transmitting, light scattering and light emitting is achieved, and the starry sky effect is simulated.

The invention belongs to the technical field of optical products, and provides a large-size planar micro-cylindrical lens array, a preparation method thereof and a light beam homogenizer. The substrate is provided with a first transparent substrate and a second transparent substrate; the liquid crystal display further comprises a first orientation layer, a liquid crystal layer and a second orientation layer, wherein the first orientation layer, the liquid crystal layer and the second orientation layer are sequentially arranged between the first transparent substrate and the second transparent substrate in a stacked mode from top to bottom. Compared with the prior art, the large-size planar micro-cylindrical lens array is constructed, so that the comprehensive improvement of the performance is realized; according to the scheme, the anisotropy and the patterning orientation characteristic of liquid crystal molecules are utilized, and accurate phase modulation of light wavefront is achieved in an ultra-thin plane structure; the limitation of the traditional DOE and the metasurface in the aspects of machining size and cost is overcome; through the anisotropic characteristic of the liquid crystal polymer and the light orientation technology, the manufacturing of the ultrathin planar micro-cylindrical lens array is realized, and the preparation difficulty and cost of a large-size optical element are remarkably reduced.

The invention provides a display panel which comprises a first substrate, a second substrate, a first alignment layer, a second alignment layer, a liquid crystal layer, a first electrode layer and a second electrode layer. The first alignment layer and the second alignment layer are arranged on the first substrate and the second substrate respectively. The liquid crystal layer is arranged between the first alignment layer and the second alignment layer. The first electrode layer is arranged between the first alignment layer and the first substrate. The second electrode layer is arranged between the second alignment layer and the second substrate. The first electrode layer and the second electrode layer are used for driving a plurality of liquid crystal molecules of the liquid crystal layer. When the first electrode layer and the second electrode layer are not enabled, the included angle between the molecule long axis of each liquid crystal molecule and the substrate surface of the first substrate is larger than 9 degrees, and the orthographic projection of the molecule long axis on the first substrate or the second substrate is parallel to the alignment direction of the first alignment layer or the second alignment layer.

An electronic mirror comprises a liquid crystal cell, wherein the liquid crystal cell comprises a first transparent electrode, a second transparent electrode, a liquid crystal layer comprising liquid crystal molecules arranged between the first transparent electrode and the second transparent electrode, and an AC voltage source configured to apply an alternating voltage across the liquid crystal layer between the first transparent electrode and the second transparent electrode, wherein, when a voltage is applied across the liquid crystal layer, the liquid crystal molecules in the liquid crystal layer change their orientation, and the electronic mirror is configured to apply a varying voltage across the liquid crystal layer which gradually decreases from outer areas towards the center of the liquid crystal layer such that the refraction index of the liquid crystal layer gradually varies from outer areas towards the center of the liquid crystal layer.

The invention relates to a novel liquid crystal material and application thereof, a double five-membered heteroaromatic ring is used as a core structure unit of a liquid crystal molecule, so that the liquid crystal material keeps high dielectric anisotropy, and meanwhile, the rotary viscosity of the liquid crystal molecule is remarkably reduced. A polar substituent group is introduced at the tail end of a molecule, so that the electro-optical performance is further optimized, particularly, the dimming contrast ratio and the response speed are obviously improved, and the compound also has excellent damp-heat stability and can meet the requirements of application scenes such as large-area intelligent dimming windows and vehicle-mounted anti-dazzle rearview mirrors. The liquid crystal material provided by the invention not only provides excellent electro-optical performance, but also has low-voltage driving, high dimming contrast and excellent environmental stability, provides an innovative material solution for a next-generation high-speed and low-power-consumption liquid crystal display device, and has wide application prospects and good industrialization potential.

Provided are an optical element, a variable-focus element, and a head-mounted display, the optical element comprising: a first liquid crystal cell having first liquid crystal molecules and a first electrode; and a second liquid crystal cell having second liquid crystal molecules and a second electrode, the first electrode and the second electrode being configured to be capable of switching between a first state and a second state, the first state being a state in which the second liquid crystal molecules are twisted and the first liquid crystal molecules are vertically aligned, the second state being a state in which the first liquid crystal molecules are twisted and the second liquid crystal molecules are vertically aligned, the azimuthal angle of the alignment direction of the second liquid crystal molecules on the third substrate side in the first state and the azimuthal angle of the alignment direction of the second liquid crystal molecules on the fourth substrate side being, respectively, an angle obtained by rotating the azimuthal angle of the alignment direction of the first liquid crystal molecules on the first substrate side in the second state and the azimuthal angle of the alignment direction of the first liquid crystal molecules on the second substrate side in the second state by 1 / 4 in the same direction.

To provide a display device capable of improving display quality.SOLUTION: According to an embodiment, a display device includes a display panel including a polymer-dispersed liquid crystal including a polymer and a liquid crystal molecule in a display region for displaying an image, and a light source unit disposed along an edge portion of the display panel, wherein the display panel includes a scanning line, a signal line intersecting the scanning line, a switching element electrically connected to the scanning line and the signal line, a pixel electrode electrically connected to the switching element, and an insulating layer formed in a lattice shape overlapping the scanning line, the signal line, and the switching element, the insulating layer has a first side surface facing the light source unit and a second side surface opposite to the first side surface, and the first side surface has a plurality of inclined surfaces inclined at different angles.SELECTED DRAWING: Figure 5

The invention relates to the technical field of dimming films, in particular to a dimming film and a preparation method thereof. Comprising a first transparent conductive layer, a first liquid crystal alignment layer, a dimming layer, a second liquid crystal alignment layer and a second transparent conductive layer which are sequentially compounded, the on-state haze of the dimming film is smaller than 5%, the off-state haze of the dimming film is smaller than 10%, and the all-light dimming range is 1-60%. The polymerizable liquid crystal monomer is adopted to replace a traditional non-liquid-crystal polymer matrix, the light alignment technology is combined to achieve horizontal alignment of polymerizable liquid crystal molecules and liquid crystal molecules in the liquid crystal composition in the off state, and finally the dimming film with the off-state haze lower than 10% is obtained.

The invention provides a micro display screen light field control structure and a preparation method thereof, and relates to the technical field of micro display. Comprising a substrate, a silicon-based OLED device, a thin film packaging layer and a liquid crystal control layer, wherein a pixel definition layer with a specific inverted trapezoidal structure is arranged on the substrate; the silicon-based OLED device is evaporated on the substrate; the thin film packaging layer covers the silicon-based OLED device and forms a water vapor isolation layer; the cover plate glass is carved into a strip-shaped conductive thin film and distributed with a strip-shaped cathode of the silicon-based OLED device in a crossed mode, the driving circuit is used for controlling the deflection state of liquid crystal molecules, and the silicon-based OLED device comprises a chiral OLED device film layer structure and is used for emitting circularly polarized light. According to the invention, the light field distribution can be stably regulated and controlled, the high-quality naked-eye 3D display effect is realized, and the stable operation of the silicon-based OLED device is effectively ensured.

The invention discloses a preparation method of mesophase pitch regulated and controlled by plasma-assisted directional bromination and catalytic debromination, and belongs to the technical field of high-value utilization of heavy oil and preparation of advanced carbon materials. The method comprises the following steps: (1) by taking aromatic hydrocarbon-rich heavy oil as a raw material, carrying out low-temperature plasma-assisted liquid-phase bromination reaction, and directionally introducing bromine atoms on an aromatic ring as activation and orientation sites, so as to construct bromination modified linear precursor asphalt; (2) carrying out supported metal hydride catalytic debromination-directional polycondensation reaction to synchronously realize total removal of bromine atoms, linear coupling between aromatic rings and improvement of molecular planarity, so as to prepare pre-mesophase pitch; and (3) carrying out heat treatment in a strong and uniform magnetic field, and enabling the liquid crystal state molecules to be highly and orderly arranged along the direction of the magnetic field by virtue of the orientation effect of the magnetic field on the pi electron cloud, so as to finally form the spinnable mesophase pitch with a wide-area streamline structure. The method realizes full-chain accurate regulation and control from molecular structure design to macroscopic orientation, and the prepared mesophase pitch has the characteristics of high anisotropic content (greater than 98%), moderate softening point (260-300 DEG C), highly ordered molecular arrangement and low quinoline insoluble content (less than 0.1%). The process is novel, and a brand new path is provided for preparing the high-performance mesophase pitch.

The present application relates to a kind of preparation of photosensitive liquid crystal composite film based on orientation layer, just can realize the preparation method of light response anti-fake micro-domain pattern controllable film.The film is mainly composed of multiple polymerizable functional group and single polymerizable functional group liquid crystal monomer material, multiple polymerizable functional group and single polymerizable functional group azo photosensitive material and photosensitive initiator etc..Only by the control of polymerization condition and spin coating condition, without the aid of any external means, the liquid crystal composite film based on orientation layer prepared by the method of the present application can realize the generation of micro-domain structure based on the difference of liquid crystal molecular polymerization arrangement direction and the control of domain structure direction.In addition, under the external stimulation such as light irradiation, the composite film can realize the active control of anti-fake micro-domain pattern.The preparation method of the present application is simple and easy to operate, green and environmentally friendly, can be remotely controlled, and is suitable for information security anti-fake technology field.

The application relates to a fluorine-containing ferroelectric nematic liquid crystal molecule and application thereof, relates to the technical field of photoelectric materials, and solves the problem of low dielectric constant of traditional liquid crystal materials which restricts the application of the liquid crystal materials in photoelectric functional devices. The molecule adopts a unique non-chiral V-shaped configuration design, takes a benzene ring as a core skeleton, and realizes performance optimization through meta-connection of differentiated functional side chains. In the molecular structure design, a strong electron-withdrawing trifluoromethyl substituent is introduced into the benzene ring 2, 4 of one end of the side chain, the intermolecular interaction force is enhanced, and the long-range order of the material is maintained; the other end adopts an alkoxy flexible chain structure, which not only improves the solubility of the material, but also enhances the thermal stability. The raw material is easy to obtain, the preparation is simple, the fluorine-containing ferroelectric liquid crystal molecule is in a nematic phase, the dielectric constant can be as high as 1.4 x 10 4 (1 kHz), and has a wide ferroelectric nematic phase transition temperature, high polarization intensity and nonlinear optical response, and has important application value in the field of photoelectric functional materials.

According to one embodiment, a display device includes a display panel including a polymer dispersed liquid crystal containing a polymer and a liquid crystal molecule in a display area which displays an image, a light source unit provided along an edge portion of the display panel, a glass member located on a side opposite to an observation position of the display panel, and a dimming panel located between the display panel and the glass member and having a guest-host liquid crystal in a dimming area which overlaps the display area. An initial alignment direction of the liquid crystal molecule in the display panel is parallel to an absorption axis in the dimming panel.