372 results about "Liquid crystal cell" patented technology

The embodiment of the utility model discloses a display panel and a display device, the display panel comprises a first liquid crystal box, a second liquid crystal box and a third liquid crystal box which are stacked, and the first liquid crystal box, the second liquid crystal box and the third liquid crystal box reflect light of different colors respectively; a plurality of first data lines, a plurality of second data lines and a plurality of third data lines, the plurality of first data lines are connected with the first liquid crystal box, the plurality of second data lines are connected with the second liquid crystal box, and the plurality of third data lines are connected with the third liquid crystal box; the plurality of first data lines are connected with one ends of the plurality of second data lines in a one-to-one correspondence manner through the first circuit board, and the other ends of the plurality of second data lines are connected with one ends of the plurality of third data lines in a one-to-one correspondence manner through the second circuit board; and corresponding data voltages are written into the first liquid crystal box, the second liquid crystal box and the third liquid crystal box in a time-sharing manner. According to the scheme, the number of used driving chips can be reduced, and the manufacturing cost can be reduced.

Eyeglasses may include left and right adjustable lenses. Each adjustable lens may include a stack of liquid crystal cells that are interconnected using vertical interconnect structures such as through-substrate-vias, conductive beads in a liquid crystal sealant, anisotropic conductive adhesive, conductive epoxy, diffusion bonds, eutectic bonds, and / or other suitable interconnect structures. Each liquid crystal cell in the stack may include liquid crystal material sandwiched between first and second substrates. A sealant may surround the liquid crystal material and may include conductive beads that form intra-cell connections between the first and second substrates of that liquid crystal cell. Through-substrate-vias may be formed in the substrate and may be coupled to the conductive beads in the sealant. Anisotropic adhesive, conductive epoxy, or other conductive material may be located between the liquid crystal cells and may be used to form inter-cell connections in the stack.

The invention discloses a display device and a manufacturing method thereof. The display device comprises a display panel, a liquid crystal box and a linearly polarized light rotating structure arranged between the display panel and the liquid crystal box, the liquid crystal box is arranged on the light emitting side of the display panel, and the liquid crystal box comprises a first substrate, a second substrate, a lens set, a first orientation layer, a liquid crystal layer and a second orientation layer, the lens group is located between the first substrate and the second substrate, a plurality of lenses of the lens group extend in the first direction, the orientation direction of the first orientation layer and the orientation direction of the second orientation layer are parallel to the first direction, and an included angle is formed between the polarization direction of linearly polarized light emitted from the display panel and the first direction. The linearly polarized light rotating structure is configured to rotate the polarization direction of the emergent light to be parallel to the first direction. Due to the fact that the arrangement direction of the liquid crystal molecules needs to be parallel to the polarization direction, the arrangement direction of the liquid crystal molecules can be parallel to the first direction, arrangement of the liquid crystal molecules has better consistency, and occurrence of liquid crystal molecule misalignment is reduced to a great extent.

The invention relates to the technical field of wireless communication, and discloses a liquid crystal antenna and communication equipment, and the liquid crystal antenna comprises a liquid crystal box and a metal waveguide; the liquid crystal box at least comprises a first substrate, a second substrate and a liquid crystal layer, wherein the first substrate and the second substrate are oppositely arranged, and the liquid crystal layer is located between the first substrate and the second substrate. The metal waveguide is located on the side, away from the second substrate, of the first substrate. The liquid crystal box further comprises a first metal layer which is located on the side, away from the metal waveguide, of the first substrate. The first metal layer is grounded, and the first metal layer comprises two hollow grooves; the length direction of the metal waveguide is the same as that of the hollow groove; in the direction perpendicular to the plane where the first substrate is located, the metal waveguide and the two hollowed-out grooves are at least partially overlapped. The communication equipment comprises the liquid crystal antenna. According to the invention, insertion loss can be effectively reduced, antenna bandwidth is improved, and antenna gain is ensured.

An optical element is provided that can control the light distribution or light distribution pattern. An optical element includes two stacked liquid crystal cells (120, 110), wherein each liquid crystal cell includes: a first substrate (111-1, 121-1) having a first transparent electrode (112-1, 122-1) and a second transparent electrode (112-2, 122-2) alternately disposed along a first direction; a second substrate (111-2, 121-2) having a third transparent electrode (112-3, 122-3) and a fourth transparent electrode alternately disposed along a second direction intersecting the first direction; and a liquid crystal layer (113, 123) located between the first substrate and the second substrate, wherein the second substrate (111-2) of one liquid crystal cell is adjacent to the first substrate (121-1) of the other liquid crystal cell.

The utility model discloses a kind of super twist nematic liquid crystal displays, and the display includes surface polarizer, liquid crystal box and bottom polarizer. Among them, liquid crystal box is composed of surface ITO glass, upper PI alignment film, sealing rubber edge, plastic ball rubber edge powder, liquid crystal layer, plastic ball center powder, lower PI alignment film and bottom ITO glass;ITO common electrode is etched on surface ITO glass, and it is distributed on surface ITO glass with wiring, forms separate ITO step and connects drive IC;ITO segment electrode is etched on bottom ITO glass, and it is distributed on bottom ITO glass with wiring, forms separate ITO step and connects drive IC. The present application is separated by setting common electrode and segment electrode on different glass substrate, using independent ITO step and drive IC, optimize the driving mode and structure layout, effectively improve the display performance of super twist nematic liquid crystal display.

The invention provides a display module and a display device, and relates to the technical field of display, the display module comprises a backlight module, a light control liquid crystal box and a display liquid crystal box, the light control liquid crystal box and the display liquid crystal box are arranged on the light emitting side of the backlight module, and the light control liquid crystal box is located between the display liquid crystal box and the backlight module; the light control liquid crystal box is at least configured to control the transmission area and light intensity of light rays emitted by the backlight module to the display liquid crystal box; at least one of the display liquid crystal box and the light control liquid crystal box is in a normally white mode. Therefore, the overall transmittance of a display product can be improved, and power consumption can be saved.

A lighting device includes a light source, a first liquid crystal cell over the light source, and a second liquid crystal cell over the first liquid crystal cell. The light source includes light-emitting elements arranged in a matrix shape with m rows and n columns. The first and second liquid crystal cells each include: a first substrate; first electrode groups located over the first substrate and arranged in a matrix shape with m rows and n columns; a liquid crystal layer over the first electrode groups; and a second substrate over the liquid crystal layer. In each of the first and the second liquid crystal cells, the first electrode groups each have first electrodes extending in a row direction, and the light-emitting elements in a jth row and a kth column overlaps the first electrode group located in the jth row and the kth column.

A method and system for optical switching with integrated polarization diversity control comprising a beam displacer to receive an input beam and split the input beam into a first beam and a second beam with linear polarization. The first and second beams may be received on a liquid crystal cell that may rotate the first or second beam so that both beams have the same polarization after traversing the liquid crystal cell. Based on the polarization, the output beam may be switched to a port.

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 application provides an image generating unit and a display device. The image generating unit comprises a backlight module, a first liquid crystal panel, a second liquid crystal panel and a first polarizer; the first liquid crystal panel comprises a linear polarization structure, a first liquid crystal cell and a second polarizer arranged along the transmission direction of the outgoing light rays of the backlight module; the second liquid crystal panel comprises a second liquid crystal cell and a color filter; at least one of the components in the first liquid crystal panel, the first liquid crystal panel and the second liquid crystal panel, the components in the second liquid crystal panel and the second liquid crystal panel and the first polarizer is provided with an air gap with a preset width. The application uses a double-screen structure, the black-and-white first liquid crystal panel realizes regional dimming, which is beneficial to improving the contrast ratio; the color second liquid crystal panel removes the lower polarizer and is provided with a higher resolution, which is beneficial to improving the display effect; the structures are separated by a distance, the heat can circulate in the air, thereby enhancing the heat dissipation effect and reducing the heat.

Provided is a weak anchoring liquid crystal alignment agent which is used for forming a liquid crystal alignment film of a liquid crystal cell that has liquid crystals and the liquid crystal alignment film, and which comprises: at least one polymer (A) that is selected from the group consisting of polyamic acids, polyamic acid esters, polyimides, polyamides, and polyuria; and a polymer (B) that is compatible with the liquid crystals and that exhibits weak anchoring properties, said weak anchoring liquid crystal alignment agent containing a graft copolymer in which the polymer (A) and the polymer (B) are bonded.

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.

An electronic eyewear device including a spatial dimming pixel panel within an optical assembly that delivers improved backlighting conditions for displayed images. The spatial dimming pixel panel is spatially dimmed where an image is positioned on a display, and the unoccupied area of the display is not dimmed (undimmed), thereby unaltering the real-world view through that portion of the display. The spatial dimming pixel panel is made of multiple liquid crystal cells arranged in a gridded orientation with a dye-doped or guest-host liquid crystal system having a phase change mode with homeotropic alignment. The spatial dimming pixel panel absorbs nonpolarized light when a voltage is applied across the cells and passes nonpolarized light in the absence of a voltage across the cells.

The application relates to the technical field of optical elements, in particular to a volume polarization grating and a preparation method thereof, an optical waveguide and a display device, which comprises the following steps: step 100: obtaining a liquid crystal cell; step 200: irradiating a photoalignment agent coating layer on the liquid crystal cell with light of a first wavelength to induce patterned orientation; and step 300: irradiating a premix in the liquid crystal cell with light of a second wavelength to make reactive mesogenic monomers polymerize and solidify, thereby forming a volume polarization grating. The application realizes time sequence decoupling and synergistic optimization of "orientation writing-structure locking" in a single processing flow, realizes process simplification and time sequence decoupling, has comprehensive advantages such as a more complete structure and more stable performance, and can effectively solve technical problems in existing PVG patterning processing, such as complex flow, mutual interference between orientation and solidification, and limited efficiency and consistency.

A liquid crystal microlens array includes m1 first electrode bars and m2 second electrode bars. The orthographic projections of the second electrode bars on the liquid crystal layer intersect the orthographic projections of the first electrode bars on the liquid crystal layer respectively. The m1 first electrode bars are respectively fed with 1-n1 voltage signals, and the m2 second electrode bars are respectively fed with 1-n2 voltage signals. By controlling the voltage values of the voltage signals, the rotation angle of the liquid crystal molecules at this position in the liquid crystal cell can be changed to form an annular phase delay distribution, so as to form a curved microlens at each n1×n2 intersection point. The first electrode bars and the second electrode bars are in a strip structure, which is relatively simple to manufacture. By controlling the sizes of n1 and n2, the shape and size of the curved microlens can be controlled, and the regulation accuracy is relatively high. A driving method for the liquid crystal microlens array and a near-eye display system including the liquid crystal microlens array are also provided.

A viewing angle control system includes sequentially: a first polarizer, a first optical compensation layer, a first TN-mode liquid crystal cell, a second polarizer, a second TN-mode liquid crystal cell, a second optical compensation layer, and a third polarizer. The first and second optical compensation layers each exhibit minimum retardation in a tilted direction rather than in a normal direction. The system provides high brightness in a front direction and low brightness in an oblique direction at a specific azimuthal angle when applied to a light source.

The present invention addresses the problem of providing a viewing angle control system capable of switching between a light-blocking mode and a transmission mode when viewing from a tilt direction at a prescribed azimuth angle, and making it easier to view an image in the light-blocking mode and in the transmission mode. This viewing angle control system has a light-absorbing anisotropic layer, a liquid crystal cell, and a polarizer in this order, and is characterized in that: the angle formed by the transmittance center axis of the light-absorbing anisotropic layer and the normal line of the light-absorbing anisotropic layer is 0-45 degrees; an optical compensation layer is provided between the light-absorbing anisotropic layer and the liquid crystal cell and / or between the liquid crystal cell and the polarizer, and no other light-absorbing anisotropic layer or other polarizer is provided between the light-absorbing anisotropic layer and the polarizer.

An optical device includes an optical element including a liquid crystal cell configured to distribute light emitted from a light source, a power supply part configured to generate first and second potentials, a control signal generation circuit part configured to generate a control signal that controls a pulse width of each of the first and second potentials, and a switch circuit part configured to output a first potential signal including the first potential with a first pulse width and the second potential with a second pulse width based on the control signal. The liquid crystal cell includes a first substrate on which first and second transparent electrodes are alternately arranged in a first direction, and a second substrate on which third and fourth transparent electrodes are alternately arranged in a second direction. The first potential signal is input to the first transparent electrode.

The present invention relates to an impact-resistant flexible liquid crystal lens, which includes two polarizers and a flexible liquid crystal cell disposed between the two polarizers, and an isolation gap is provided between the flexible liquid crystal cell and the polarizers on both sides. Compared with the prior art, the polarizers and the flexible liquid crystal cell of the present invention are sealed around and separated in the middle. During the process of the flexible liquid crystal lens being deformed by force and rebounding and recovering, the flexible liquid crystal cell will not be subjected to opposite forces on both sides, greatly improving the impact resistance of the flexible liquid crystal lens and ensuring the reliability of the product.

A display device having a rear surface includes: a first polarizer having a first main surface; a second polarizer disposed closer to the rear surface than the first polarizer, the second polarizer to be opposed to the first main surface of the first polarizer; a liquid crystal cell between the first polarizer and the second polarizer; and a touch function layer between the first polarizer and the liquid crystal cell, the touch function layer having an electrode that detects a touch input, the touch function layer being disposed on the first main surface of the first polarizer.

The utility model relates to the field of touch screens, and discloses a liquid crystal touch screen with a touch layer embedded into cover plate glass, which comprises the cover plate glass and the liquid crystal touch layer arranged in the cover plate glass, the liquid crystal touch layer is provided with a conducting layer, a liquid crystal box component is arranged below the conducting layer, and the liquid crystal box component is provided with a liquid crystal layer. A signal function layer is arranged below the liquid crystal box assembly; the novel glass cover plate plays a role in protecting the screen and optimizing the surface texture, and the tempered glass material is high in strength, high in hardness and good in light transmittance; the liquid crystal touch layer, the liquid crystal box assembly and the signal function layer are all embedded in the cover plate glass, the overall thickness of the touch screen is greatly reduced, meanwhile, the liquid crystal box assembly of the capacitive touch screen adopts the TN type liquid crystal working principle, the TN type liquid crystal box has the advantage in cost due to the simple display principle, and the cost is reduced; according to the novel colloid functional sheet, touch signals are transmitted out from the flexible circuit board through the anisotropic conductive adhesive, so that the purpose of controlling the liquid crystal screen is achieved.

The invention relates to the technical field of polymer dispersed liquid crystal, and discloses a perovskite quantum dot / polymer dispersed liquid crystal film and a preparation method thereof, and the method comprises the following steps: preparing a toluene solution of perovskite quantum dots, and adding dithiol as a ligand to carry out surface modification on the perovskite quantum dots to obtain a perovskite quantum dot / polymer dispersed liquid crystal film; cleaning by using a mixed solvent of toluene and ethyl acetate in a volume ratio of 1: 2-2: 1, and centrifuging to obtain surface-modified perovskite quantum dots; uniformly mixing the surface-modified perovskite quantum dots with an ultraviolet polymerizable monomer, a cross-linking agent, liquid crystal and an ultraviolet initiator, injecting the mixture into a liquid crystal box, and performing ultraviolet curing to obtain the perovskite quantum dot / polymer dispersed liquid crystal film. The perovskite quantum dot / polymer dispersed liquid crystal film with enhanced long-wave infrared emissivity, fluorescent pattern and information encryption, provided by the invention, has wide application prospects in liquid crystal display, intelligent glass, energy-saving building materials, automobile decoration and related fields.

An electrically switchable liquid crystal cell (10) is provided together with a lens (50) having this liquid crystal cell, and a method for manufacturing the liquid crystal cell. The liquid crystal cell (10) has a diffractive optical element (12) and a liquid crystal material (14) that can be switched between a mismatched (unswitched) state and a matched (switched) state. In the mismatched state, the effective refractive index of the liquid crystal material (14) is different from the effective refractive index of the substrate (18) of the diffractive optical element (12). In the matched state, the effective refractive index of the liquid crystal material (14) matches the effective refractive index of the substrate (18). In the matched state, the diffractive optical element does not contribute to the focal power of the lens. The diffractive optical element (12) has a number of peaks (20) and valleys (30) with rounded corners.

The invention provides a liquid crystal cell thickness detection method, device, equipment and medium based on coherence tomography, and the method comprises the following steps: generating an incident light beam by using a wide-spectrum low-coherence light source, and dividing the incident light beam into reference light and sample light of which the propagation directions are perpendicular to each other by using a beam splitter; the reference light is reflected back to the beam splitter after being vertically incident to the reflective mirror, and is propagated to an acquisition end along an original propagation direction; enabling the sample light to vertically enter the to-be-detected silicon-based liquid crystal device, then reflecting the sample light back to the beam splitter, changing the direction through the beam splitter, and propagating the sample light to an acquisition end; the interference signals of the reference light and the sample light are collected at the collection end, and the depth information of the to-be-measured silicon-based liquid crystal device is obtained after FFT processing is carried out on the interference signals, so that the problem that the thickness of a small-size liquid crystal box is difficult to accurately measure is solved.

A quantitative phase contrast imaging system comprises a light source configured to generate light and to direct the light to a sample, wherein the light comprises nonlinearly polarized light; a first lens configured to receive light from the sample; a phase filter, wherein the first lens is configured to focus the light from the sample onto the phase filter, and the phase filter is configured to modulate multiple components of the nonlinearly polarized light simultaneously (e.g., geometric phase interferometry); a second lens configured to receive light from the phase filter; and a polarized camera, wherein the second lens is configured to collimate the light beam from the phase filter to the polarized camera and the polarized camera is configured to image the sample in response to the light from the phase filter. In absence of the second lens, the camera can be placed at the image plane.

The invention relates to a method for preparing a lenticular lens on a conductive surface of a transparent support, the method comprising imprinting a curable resin on the support with a lenticular mold, followed by curing the resin and removing the mold to yield a lenticular device comprising the transparent support and a lenticular lens provided thereon. A small part of the curable resin comprises conductive particles, which after curing provide the lenticular lens with a conductive path between the conductive support surface and the lenticular lens surface. The conductive support surface is in this way easily and directly electrically accessible as a planar electrode, when the lenticular device is incorporated in an electrically switchable liquid crystal cell. Accordingly, the invention further relates to such lenticular device, to a liquid crystal cell comprising such lenticular device, and to an autostereoscopic display device comprising such liquid crystal cell.

To visually distinguish switchable information or decoration and to perform this without increasing the thickness of an LCD cell, with less complexity and without taking up space.SOLUTION: The display device comprises a liquid crystal cell (2) formed from two transparent plates (4, 6), defines a useful zone (12) so as to define a visible zone of the liquid crystal cell, and incorporates electrodes forming a switchable display of an item of information and / or of a decoration. The liquid crystal cell comprises, in the useful zone, a plurality of polarisers 16, 18 arranged in a plurality of distinct zones 17, 19, respectively, on the external face 5 of one of the two transparent plates, each partially forming a switchable display. The two polarizers have different optical properties or different polarization directions between them and are configured to visually create a difference between the respective portions of the two polarizers and / or the respective portions of the switchable display in the respective discrete zones.SELECTED DRAWING: Figure 1

The illumination device includes a light emitting module; and an optical element in which a first liquid crystal cell and a second liquid crystal cell are stacked to transmit light from the light emitting module, the first liquid crystal cell and the second liquid crystal cell including a first substrate in which a first transparent electrode and a second transparent electrode are alternately arranged in a first direction, and a second substrate in which a third transparent electrode and a fourth transparent electrode are alternately arranged in a second direction intersecting the first direction, the light emitting module including a light source, a light guide plate including an end surface on which light from the light source is incident and a first surface from which the incident light is emitted, and a prism sheet arranged opposite the first surface, the second substrate of the first liquid crystal cell being adjacent to the first substrate of the second liquid crystal cell, the first surface including a plurality of first grooves extending in a third direction intersecting the first direction and the second direction.

This application belongs to the field of display technology, specifically relating to a display panel and its manufacturing method, and a display device. The display panel includes a first substrate, a second substrate, and a spacer. The second substrate is disposed on one side of the first substrate. One of the first substrate and the second substrate is an array substrate, and the other is an opposing substrate. The spacer is disposed between the first substrate and the second substrate. The spacer includes spacer pillars and balls. The spacer pillars are disposed on the first substrate, and the balls are disposed on the top of the spacer pillars away from the first substrate. The balls are capable of rolling under the force applied by the second substrate. Because the balls are rotatably disposed in the receiving groove, the friction between the spacer and the second substrate is rolling friction. The rate at which the top of the spacer shortens due to wear is significantly reduced, improving the display uniformity caused by changes in the thickness of the liquid crystal cell, thereby improving the display effect of the display panel.