50results about How to "Reduce box thickness" patented technology

The invention discloses a liquid crystal composition with positive dielectric anisotropy. The liquid crystal composition contains one or more compounds shown in a general formula I, one or more compounds shown in a general formula II and one or more compounds shown in a general formula III. The invention also discloses a liquid crystal display device including the liquid crystal composition disclosed by the invention. The liquid crystal composition provided by the invention has the advantages of high clearing points, good low-temperature intersolubility, quick response, low LC (Liquid Crystal)light leakage, high contrast ratio, high penetration ratio and the like, and moreover, the contrast ratio can be achieved while large dielectric, low box thickness and quick response are met at the same time; and therefore, the liquid crystal composition is particularly suitable for being used in liquid display elements driven by active matrix thin film transistors (AM-TFT). The formula (1) is shown in the description.

The invention discloses a bandwidth adjustable liquid crystal terahertz wave plate based on a porous graphene transparent electrode. Sub-wavelength metal wire gratings are arranged on the inner side of a substrate of an incidence surface, porous graphene is arranged on the inner side of a substrate on an exit surface, and the two substrates made of fused quartz are sealed and combined to form a liquid crystal box. Two light-control orientation layers are sandwiched between the metal wire gratings and the porous graphene in the liquid crystal box, liquid crystal materials are sandwiched between the two light-control orientation layers, and the liquid crystal materials are terahertz electronic control large birefringence liquid crystal materials. Parallel orientation of liquid crystals is achieved in the liquid crystal box through the mode of light-control orientation, and a 45-degree included angle is formed between the orientation direction and the direction of the metal wire gratings. According to the bandwidth adjustable liquid crystal terahertz wave plate based on the porous graphene transparent electrode, the electronic control birefringence characteristic of the liquid crystals is used, phase delay of ordinary light and extraordinary light is regulated through voltage to correspond to specific wave plates with different frequencies, and the bandwidth adjustable liquid crystal terahertz wave plate has the advantages of being superwide in frequency band, capable of achieving automatic polarization, high in transmittance, large in modulation amount, rapid in response and the like and can be widely applied in the booming terahertz field.

The invention discloses a dicyclohexyl ethylene group substituted diphenylacetylene liquid crystal compound and a preparation method thereof. The structural general formula of the dicyclohexyl ethylene group substituted diphenylacetylene liquid crystal compound is shown in the specification, wherein (F)m, (F)n and (F)x respectively represent fluorine atom substitution, m, n and x represent substitution number of the fluorine atoms and the value of m, n and x is 0 or 1, and the cyclohexyl is trans-cyclohexyl; both R and R' represent C1-C15 alkyl, C1-C15 alkenyl, C1-C15 alkoxy, C1-C15 alkenyloxy, fluoro-substituted C1-C15 alkyl or fluoro-substituted C1-C15 alkenyl. The dicyclohexyl ethylene group substituted diphenylacetylene liquid crystal compound not only has high clearing point, wide nematic phase section, large birefringence, and low optical absorption coefficient, but also has low melting point, low viscosity and good intermiscibility, and can be used in liquid crystal optical elements; the dicyclohexyl ethylene group substituted diphenylacetylene liquid crystal compound with side fluorine can also be used in a double frequency liquid crystal display mode.

The invention discloses a broadband-adjustable terahertz wave plate component which comprises two quartz substrates, metal wire gratings are arranged inside the quartz substrates, the metal wire gratings on two sides are parallel to each other, and the two quartz substrates form a liquid crystal box through frame glue. The liquid crystal box comprises an optical control orientation layer and a liquid crystal material. Liquid crystal is an electric control large birefringence liquid material. The optical control orientation layer and the liquid crystal material of the liquid crystal box achieve parallel orientation of the liquid crystal through an optical control orientation method, the orientation direction of the optical control orientation layer and the direction of the metal wire gratings form a 45-degree angle, and the liquid crystal box can achieve an adjustable one quarter or a half wave plate in a terahertz frequency range. The broadband-adjustable terahertz wave plate has the advantages of being wide in frequency range, self-polarization, high in transmittance, large in modulation quantity, fast in response and the like. In addition, the manufacture cost is low, efficiency is high, the broadband-adjustable terahertz wave plate can be produced in massive mode, and the application prospects are wide.

The invention discloses a liquid crystal composition with positive dielectric anisotropy. The composition comprises one or more compounds represented by a general formula I shown in the description, wherein a content of the compounds in the liquid crystal composition is >= 2 wt%; one or more compounds represented by a general formula II shown in the description, wherein a content of the compoundsin the liquid crystal composition is > 2 wt%; and one or more compounds represented by a general formula III shown in the description, wherein a content of the compounds in the liquid crystal composition is >= 11 wt%. The invention also discloses a liquid crystal display device containing the liquid crystal composition disclosed by the invention. The liquid crystal composition provided by the invention has the advantages of a high clearing point, good low-temperature intersolubility, a low driving voltage, a low cell thickness, fast response and a high penetration rate, and is suitable for a liquid crystal display element driven by an active matrix thin-film transistor (AM-TFT), and especially suitable for display elements with harsh working environments, such as on-board displays.

The invention provides an ultra-wide range temperature liquid crystal composition which comprises the following components by weight percent: 1-20 percent compound of general formula I, 10-60 percent of compound of general formula II, 5-30 percent of compound of general formula III, 10-50 percent of compound of general formula IV, and 1-25 percent of compound of general formula V. The liquid crystal composition has the advantages of extensive nematic-phase temperature range, superhigh clearing point, low melting point, lower rotary viscosity, suitable optical anisotropy, applicable dielectric anisotropy, higher response speed, favorable low-temperature storage stability, favorable UV resistance and thermal stability, can be used for outdoor and high-altitude liquid crystal display, also for environments where the temperature is high, and UV light radiation is strong, or the temperature is extremely low, including polar regions, high-altitude, plateau, tropical zones, deep sea area, or for special display field in similar harsh regions, and has favorable weatherability. The invention further provides a liquid crystal display comprising the liquid crystal composition.

The invention belongs to the field of liquid crystal compound materials, and relates to a liquid crystal compound containing dibenzothiophene and oxygen-containing heterocycles and application of the liquid crystal compound. The chemical structural formula is shown in the formula I. The liquid crystal compound and a liquid crystal composition containing the liquid crystal compound have the advantages of large dielectric, high clearing point, high refractive index, high K value and the like, and are suitable for displays in VA, ECB, PALC, FFS or IPS modes.

The invention discloses a display panel. The display panel comprises a color film substrate, an array substrate opposite to the color film substrate and a liquid crystal layer located between the color film substrate and the array substrate, wherein a first alignment layer is arranged on the color film substrate; a second alignment layer is arranged on the array substrate; the first alignment direction of the first alignment layer is perpendicular to the second alignment direction of the second alignment layer; positive liquid crystal molecules in the liquid crystal layer are in a twisted arrangement state from bottom to top at the beginning; the color film substrate is also provided with a first orientation layer and a first visual angle compensation layer; the first orientation layer isused for orienting the first visual angle compensation layer, and the first orientation direction of the first orientation layer is reversely parallel to the first alignment direction of the first alignment layer; the array substrate is further provided with a second orientation layer and a second visual angle compensation layer, the second orientation layer is used for orienting the second visualangle compensation layer, and the second orientation direction of the second orientation layer is reversely parallel to the second alignment direction of the second alignment layer. The invention discloses a manufacturing method and a display device.

The invention discloses a negative dielectric anisotropy liquid crystal composition with a display mode of IPS or FFS, a liquid crystal display element containing the liquid crystal composition, and a liquid crystal display, and belongs to the field of liquid crystal display. The liquid crystal composition comprises 17-23% by mass of a compound represented by a formula I, 8-12% by mass of a compound represented by a formula II, at least two compounds represented by a formula III and having a total mass content of 15-20%, at least two compounds represented by a formula IV and having a total mass content of 8-12%, one or more compounds with the mass content of 9-13% as shown in a formula V and one or more compounds as shown in a formula VII. The liquid crystal composition disclosed by the invention has a relatively low ratio of rotary viscosity gamma 1 to elastic constant K and relatively large optical anisotropy n, and can be used for developing liquid crystal display elements or liquid crystal displays with quick response and low box thickness.

The invention discloses a liquid crystal display device and a driving method.The liquid crystal display device comprises an array substrate, an opposite substrate, a liquid crystal layer, a light guide plate, a light supplementing lamp and a reflecting layer, the reflecting layer is arranged on the back face of the array substrate, and a plurality of color resistance areas and a plurality of blank areas are arranged on the opposite substrate; each pixel unit at least corresponds to one color resistance area and/or one blank area, the light supplementing lamp is arranged on the side face of the light guide plate, and the reflecting layer and the light guide plate are both of a whole-face arrangement structure; in the ambient light display mode, the light supplementing lamp is turned off; and turning on the light supplement lamp in the display mode of the light supplement lamp. The whole reflecting layer is arranged and located on the back face of the array substrate, a quarter-wave slide does not need to be arranged, and the box thickness is reduced; the whole pixel unit can realize reflection, and the aperture opening ratio is higher; a light guide plate and a light supplementing lamp are further arranged for light compensation, normal display can be achieved when external environment light is dark, when the light supplementing lamp is used for display, the whole pixel unit can achieve a dark state or a bright state, and the aperture opening ratio is higher.

The invention discloses a liquid crystal composition with positive dielectric anisotropy. The liquid crystal composition contains one or more compounds shown in a general formula I shown in the description, one or more compounds shown in a general formula II shown in the description and one or more compounds shown in a general formula III shown in the description. The invention also discloses a liquid crystal display device including the liquid crystal composition disclosed by the invention. The liquid crystal composition provided by the invention has the advantages of good low-temperature intersolubility, quick response, low LC (Liquid Crystal) light leakage, high contrast ratio and the like, and moreover, the contrast ratio can be taken into account while large dielectric, low box thickness and quick response are met at the same time; and therefore, the liquid crystal composition is particularly suitable for being used in liquid crystal display elements driven by active matrix thin film transistors (AM-TFT).

The invention provides a transparent display panel, a preparation method thereof and a display device. The transparent display panel comprises a cover plate and a driving substrate which are oppositely arranged, wherein a polymer stable liquid crystal layer and a frame sealing glue are arranged between the cover plate and the driving substrate; and a first groove is formed in the position, corresponding to the frame sealing glue, of at least one of the cover plate and the driving base plate, and a part of the spacer in the frame sealing glue is located in the first groove. The spacer is located in the first groove, so that the distance between the cover plate and the driving substrate can be smaller than the height of the spacer, the box thickness can be reduced, and a contrast ratio of waveguide transparent display based on the polymer stabilized liquid crystal is improved.

The invention discloses an array substrate, a manufacturing method and a display panel. The array substrate comprises a substrate, and scanning lines, data lines, thin film transistors, a quantum dot layer, a metal wire grid polaroid, an anti-reflection layer and pixel electrodes which are arranged on the substrate, wherein each pixel electrode is electrically connected with the corresponding scanning line and data line through the thin film transistor, the metal wire grid polaroid is arranged on the side, away from the substrate, of the quantum dot layer, the anti-reflection layer is arranged on the side, away from the quantum dot layer, of the metal wire grid polaroid, the metal wire grid polaroid comprises a plurality of metal wires which are parallel to one another and arranged at intervals, the anti-reflection layer comprises a plurality of light absorption wires which are parallel to one another and arranged at intervals, and the light absorption wires are in one-to-one correspondence with the metal wires. According to the invention, the metal wire grid polaroid is arranged on the side, away from the substrate, of the quantum dot layer and matched with the anti-reflection layer corresponding to the metal wire grid polaroid, so that the color gamut is improved while the problems of depolarization and ambient light reflection can be prevented so as to improve the contrast ratio.

The invention provides a phase shifter, a manufacturing method and working method thereof and belongs to the phase shifter technical field. The phase shifter includes a first sub-phase shifter and a second sub-phase shifter which are disposed in a stacked manner; the first sub-phase shifter and the second sub-phase shifter share the same microstrip line; and the microstrip line is located betweenthe first sub-phase shifter and the second sub-phase shifter. With the technical schemes of the present invention adopted, the response time of the phase shifter can be reduced, and the phase shiftingdegree of the phase shifter can be increased.

The invention provides a display panel and a display device. The display panel comprises a first substrate, a second substrate opposite to the first substrate, a liquid crystal layer and a columnar spacer layer, wherein the liquid crystal layer and the columnar isolation pad layer are located between the first substrate and the second substrate. The columnar isolation pad layer comprises at leastone main isolation pad column, the first substrate comprises at least one boss area and a main isolation pad area, the thickness of the first substrate at the main isolation pad area is smaller than that of the first substrate at the boss area, and the main isolation pad column is arranged on the first substrate and located in the main isolation pad area; the thickness of the first substrate at the main isolation pad area is set to be smaller than the thickness of the first substrate at the boss area; and the main isolation pad column is arranged on the first substrate and is positioned in themain isolation pad area, so that the box thickness of the display panel in the boss area is reduced, and the phenomenon of light leakage caused by the fact that the box thickness of the display panelin the boss area is too thick is avoided.

The invention discloses a liquid crystal composition and a liquid crystal display device. The liquid crystal composition contains at least one compound selected from a group composed of a formula I-1,a formula I-2 and a combination thereof, and at least one compound of a formula II. The liquid crystal composition provided by the invention has the advantages of good low-temperature mutual solubility, fast response, small LC light leakage, high contrast, and the like, and is particularly suitable for usage in a liquid crystal display element driven by an active matrix thin film transistor (AM-TFT).