39results about How to "Suitable Dielectric Anisotropy" patented technology

The invention provides a novel polymerizable liquid crystal composition comprising a first component of at least one compound represented by the general formula I, a second component of at least one compound represented by the general formula II, a third component of at least one compound represented by the general formula III, and a fourth component of at least one compound represented by the general formula IV. According to the polymerizable liquid crystal composition, polymerization speed can be controlled, polymeric compound residue can be reduced, and problems such as after-image, image display unevenness, low-temperature crystallization, and the like can be greatly reduced. The composition also has good anti-ultraviolet stability, good low-temperature storage performance, relatively high clearing point, appropriate optical anisotropy, and appropriate dielectric anisotropy. The invention also provides a liquid crystal display device comprising the polymerizable liquid crystal composition.

The invention provides a novel polymerizable liquid crystal composition comprising a first component of at least one compound represented by the general formula I, a second component of at least one compound represented by the general formula II, a third component of at least one compound represented by the general formula III, and a fourth component of at least one compound represented by the general formula IV. According to the polymerizable liquid crystal composition, polymerization speed can be controlled, polymeric compound residues can be reduced, and risks of causing poor display problems such as after-images and image display unevenness can be greatly reduced. The invention also provides a liquid crystal display device comprising the polymerizable liquid crystal composition.

The present invention discloses a liquid crystal composition having rapid response, wherein the liquid crystal composition comprises one or a plurality of compounds represented by a general formula I, one or a plurality of compounds represented by a general formula II, one or a plurality of compounds represented by general formulas III-1, III-2 and III-3 or a composition of the compounds represented by general formulas III-1, III-2 and III-3. According to the present invention, the liquid crystal composition has characteristics of suitable optical anisotropy, suitable dielectric anisotropy, high clearing point, rapid response, wide work temperature range and the like, and can be used for liquid crystal displays, particularly the liquid crystal display having the rapid response requirement.

The invention provides a negative liquid crystal composition comprising: at least one compound represented by the general formula I and used as a first ingredient; at least one compound represented by the general formula II and used as a second ingredient; and a 1-2000 ppm antistatic agent comprising at least one crown ether compound and a compound represented by the formula V. The negative liquid crystal composition can effectively reduce the current power consumption, reduce the electrostatic discharge time, and greatly reduce risks of generation of image ghost shadow, image display unevenness and other display poor problems. The invention also provides a liquid crystal display comprising the negative liquid crystal composition.

The invention provides a liquid crystal composition which comprises at least one compound disclosed as general formula I as a first component, at least one compound disclosed as general formula II as a second component, at least one compound disclosed as general formula III as a third component, and at least one compound disclosed as general formula IV as a fourth component. The liquid crystal composition can control the polymerization rate, lower the polymer compound residues and greatly reduce the risks of display defectiveness problems, such as image ghost, nonuniform image display and the like. The invention also provides a liquid crystal display device comprising the liquid crystal composition.

The invention provides a liquid crystal composition which has negative dielectric anisotropy. The liquid crystal composition comprises a compound of a general formula I accounting for 1-30% of the total weight of the liquid crystal composition, and 15-70% of a compound of a general formula II-1 and / or II-2, and 10-55% of a compound of free general formula III. The liquid crystal composition provided by the invention can be used for a liquid crystal element, and has properties of low viscosity, high response speed, excellent low-temperature reliability and the like. The liquid crystal composition provided by the invention is especially suitable for liquid crystal displays such as VA, PSVA (Polymer Stabilize Vertical Align), PS-IPS and the like. The invention also provides a liquid crystal display comprising the liquid crystal composition.

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 provides a liquid crystal composition and a liquid crystal display device. The liquid crystal composition is composed of at least one compound shown as the formula I, at least one compound shown as the formula II and at least one compound shown as the formula III, and through the cooperation of the three compounds, can achieve higher optical anisotropy and dielectric anisotropy, goodlow-temperature intersolubility, excellent electric resistivity and voltage retention rate under ultraviolet irradiation, thereby well solving the problem of image retention. Meanwhile, in the liquidcrystal composition, the polymerizable compounds can be more uniform and less prone to form large polymerized particles during polymerization and accordingly can avoid affecting display effects in the panel of the liquid crystal display device due to formation of light spots.

The invention discloses a polymer liquid-crystal composition. The polymer liquid-crystal composition comprises a first component, a second component and a third component, wherein the first component is selected from a group consisting of a general formula I-1, a general formula I-2 and a general formula I-3 as well as an assembly thereof; the second component is selected from a group consisting of a general formula II-1, a general formula II-2, a general formula II-3, a general formula II-4 as well as an assembly thereof; the third component is selected from a general formula III. The invention further discloses a liquid crystal display apparatus comprising the polymer liquid-crystal composition. The polymer liquid-crystal composition provided by the invention has proper refractive index anisotropy, proper dielectric anisotropy, a relatively wide nematic phase temperature range, a relatively high clearing point and relatively low RM residues, is stronger in anchoring effect of polymer RM, greatly reduces risk of bad display problems such as image ghost and uneven image display, and can be suitable for the liquid crystal display apparatus, so that the liquid crystal display apparatus has the characteristics such as good display at high temperature. The structural formula of I-1, I-2, I-3, II-1, II-2, II-3, II-4 and III are shown in the description.

The invention discloses a polymer liquid-crystal composition and a liquid crystal display apparatus comprising same. The polymer liquid-crystal composition comprises one or more compounds selected from a group consisting of a general formula I-1, a general formula I-2 and a general formula I-3 as well as an assembly thereof; one or more compounds selected from a group consisting of a general formula II-1, a general formula II-2, a general formula II-3, a general formula II-4 as well as an assembly thereof; one or more compounds selected from general formula III. The polymer liquid-crystal composition provided by the invention has proper refractive index anisotropy, proper dielectric anisotropy, a relatively wide nematic phase temperature range, a relatively high clearing point, relatively high response speed and good UV stability, can be applicable to a liquid crystal display, can meet the quick response needs of the liquid crystal display and good display needs under the UV condition, and obtains obvious technological progress. The structural formula of I-1, I-2, I-3, II-1, II-2, II-3, II-4 and III are shown in the description.

The invention provides a liquid crystal composition which comprises 1-20 wt% of compound disclosed as Formula I, 5-35 wt% of compound selected from Formula II-1, Formula II-2, Formula II-3 and combination thereof, 25-50 wt% of compound disclosed as Formula III, 5-25 wt% of compound composed of Formula IV-1, Formula IV-2 and combination thereof, and 5-25 wt% of compound composed of Formula V-1, Formula V-2 and combination thereof. The liquid crystal composition provided by the invention has the advantages of appropriate optical anisotropy, appropriate dielectric anisotropy, high response speed, high low-temperature storage stability, favorable ultraviolet irradiation resistance and favorable heat stability, and is suitable for IPS (in-plane switching), FFS (fringe field switching) and other display modes. The invention also provides a liquid crystal display device comprising the liquid crystal composition.

The invention discloses a liquid crystal composition and its display device. The liquid crystal composition contains one or more compounds selected from compounds as shown in the general formula I-1 and / or general formula I-2; one or more compounds selected from compounds as shown in the general formula II, one or more compounds selected from compounds as shown in the general formula III; and one or more compounds selected from compounds as shown in the general formula IV. The liquid crystal composition provided by the invention has proper optical anisotropy, proper dielectric anisotropy, high clearing point, wide nematic-phase temperature range, fast response speed and good cryogenic storage stability, and is suitable for a liquid-crystal display device. By the use of the liquid crystal composition, the liquid-crystal display device has characteristics of fast response and high reliability, and can normally operate within a wide temperature range.

The present invention provides a liquid crystal composition with positive dielectric anisotropy, comprising: one or more compounds selected from compounds expressed in general formula I, general formula II, and general formula III, and a combination thereof as a first component; one or more compounds selected from compounds expressed in general formula IV, general formula V, and general formula VI, and a combination thereof as a second component, the dielectric anisotropy of the first component being positive, and the dielectric anisotropy of the second component being negative. The liquid crystal composition not only maintains advantages such as fast response, a low drive voltage, a high clearing point, low rotary viscosity, appropriate optical anisotropy and appropriate dielectric anisotropy of IPS liquid crystal, but also significantly improves the transmittance of the liquid crystal display. Compared with existing IPS liquid crystal with positive dielectric anisotropy, the liquid crystal composition can improve the transmittance by 5 to 20%. The present invention further provides a liquid crystal display including the liquid crystal composition of the present invention and having an IPS display mode.

The invention provides a liquid crystal composition, which comprises at least a compound in a general formula I; at least a compound in a general formula II; and at least a compound selected from a general formula III-1, a general formula III-2, a general formula III-3, a general formula III-4 and its combination. The liquid crystal composition has characteristics of appropriate optical anisotropy, appropriate dielectric anisotropy and fast response speed. The invention also provides a liquid crystal display containing the liquid crystal composition.

The invention provides a liquid crystal composition. The composition comprises the following components: at least one compound with general formula I; at least one compound with general formula II andat least one compound with general formula III. The liquid crystal composition is provided with properly dielectric anisotropy, higher clearing point, higher optical anisotropy and good low temperature intersolubility, and other characteristics. Especially, the liquid crystal composition is provided with higher elastic constant. The invention also provides an application of the liquid crystal composition to liquid crystal displays, and the display has the advantages of fast response, high contrast, wide temperature width, and the like.

The invention provides a liquid crystal composition, which comprises at least a compound in a general formula I; at least a compound in a general formula II; and at least a compound selected from a general formula III-1, a general formula III-2, a general formula III-3, a general formula III-4 and its combination. The liquid crystal composition has characteristics of appropriate optical anisotropy, appropriate dielectric anisotropy and fast response speed. The invention also provides a liquid crystal display containing the liquid crystal composition.

The invention provides a negative liquid crystal composition comprising: at least one compound of general formula I as a first component; at least one compound of general formula II as a second component, and 1- 2000ppm of antistatic agent, said antistatic agent comprising at least one crown ether compound and a compound of formula V. The negative liquid crystal composition of the present invention can effectively reduce current power consumption, reduce electrostatic discharge time, and greatly reduce the risk of image sticking, uneven image display and other poor display problems. The present invention also provides a liquid crystal display comprising the negative liquid crystal composition of the present invention.

The invention relates to a liquid crystal composition and application thereof. The liquid crystal composition comprises at least one compound as shown in a general formula I, and at least one compound as shown in a general formula II-1 and / or at least one compound as shown in a general formula II-2, the liquid crystal composition provided by the invention can maintain VHR-initial and low-temperature storage performance at a stable level on the premise of proper optical anisotropy and dielectric anisotropy, relatively high clearing point, relatively low rotational viscosity and relatively high Kave value, and has remarkably lower conductivity I / V value and higher ion dissipation speed, the ghost shadow of a liquid crystal panel can be effectively improved, and the reliability is higher.

The invention provides a liquid crystal composition which comprises at least one compound disclosed as general formula I as a first component, at least one compound disclosed as general formula II as a second component, at least one compound disclosed as general formula III as a third component, and at least one compound disclosed as general formula IV as a fourth component. The liquid crystal composition can control the polymerization rate, lower the polymer compound residues and greatly reduce the risks of display defectiveness problems, such as image ghost, nonuniform image display and the like. The invention also provides a liquid crystal display device comprising the liquid crystal composition.

The invention discloses a polymer liquid-crystal composition and a liquid crystal display apparatus comprising same. The polymer liquid-crystal composition comprises one or more compounds selected from a group consisting of a general formula I-1, a general formula I-2 and a general formula I-3 as well as an assembly thereof; one or more compounds selected from a group consisting of a general formula II-1, a general formula II-2, a general formula II-3, a general formula II-4 as well as an assembly thereof; one or more compounds selected from general formula III. The polymer liquid-crystal composition provided by the invention has proper refractive index anisotropy, proper dielectric anisotropy, a relatively wide nematic phase temperature range, a relatively high clearing point, relatively high response speed and good UV stability, can be applicable to a liquid crystal display, can meet the quick response needs of the liquid crystal display and good display needs under the UV condition, and obtains obvious technological progress. The structural formula of I-1, I-2, I-3, II-1, II-2, II-3, II-4 and III are shown in the description.

The present invention provides a liquid crystal composition and a liquid crystal display device, the liquid crystal composition comprises at least one compound of general formula I, at least one compound of general formula II and at least one compound of general formula III, through these three The combination of these compounds can make the composition have better and higher optical anisotropy, dielectric anisotropy, good low temperature miscibility, and excellent resistivity and voltage retention after ultraviolet irradiation, which can be better Solve the problem of image retention. Moreover, when the polymerizable compound is polymerized in the liquid crystal composition, the polymerized particles are relatively uniform, and it is difficult to form larger polymerized particles, and no bright spots are formed in the panel of the liquid crystal display device to affect the display effect.

The invention provides a liquid crystal composition which has negative dielectric anisotropy. The liquid crystal composition comprises a compound of a general formula I accounting for 1-30% of the total weight of the liquid crystal composition, and 15-70% of a compound of a general formula II-1 and / or II-2, and 10-55% of a compound of free general formula III. The liquid crystal composition provided by the invention can be used for a liquid crystal element, and has properties of low viscosity, high response speed, excellent low-temperature reliability and the like. The liquid crystal composition provided by the invention is especially suitable for liquid crystal displays such as VA, PSVA (Polymer Stabilize Vertical Align), PS-IPS and the like. The invention also provides a liquid crystal display comprising the liquid crystal composition.

The invention discloses a liquid crystal composition, which comprises: a first compound selected from the group consisting of compounds of general formula I-1, compounds of general formula I-2 and combinations thereof; The second compound of the group consisting of compound, compound of general formula II-2, compound of general formula II-3, compound of general formula II-4 and combinations thereof. The liquid crystal composition provided by the invention has properties such as suitable optical anisotropy, suitable dielectric anisotropy, higher clearing point, faster response speed and good high temperature stability, and can be applied to liquid crystal displays , so that the liquid crystal display has the characteristics of short response time, high reliability, and can work normally under high temperature.

The invention discloses a liquid crystal composition and a liquid crystal display device thereof. The liquid crystal composition comprises at least a compound as a first component in a general formula I-1 and / or a formula I-2 as well as at least a compound in a general formula I-3; a compound as a second component in a general formula II; and at least a compound as a third component shown in a general formula III. The liquid crystal composition has characteristics of appropriate large refractive index anisotropy, appropriate dielectric anisotropy, high nematic phase temperature upper limit, and fast response speed. The liquid crystal composition can be used in the liquid crystal display device, and the liquid crystal display device has characteristic of short response time.

The invention discloses a liquid crystal composition, which comprises: one or more compounds selected from general formula I-1 and / or general formula I-2; one or more compounds selected from general formula II and one or more compounds selected from the general formula III. The liquid crystal composition provided by the invention has properties such as suitable optical anisotropy, suitable dielectric anisotropy, higher clearing point, faster response speed and good low-temperature storage stability, and can be applied to liquid crystal displays , so that the liquid crystal display has the characteristics of short response time, high reliability, and can work normally under high temperature and low temperature.

The invention discloses a liquid crystal composition and a display device thereof. The liquid crystal composition comprises: one or more compounds selected from general formula I-1 and / or general formula I-2; one or more compounds selected from general formula II, one or more compounds selected from a compound of general formula III; and one or more compounds selected from general formula IV. The liquid crystal composition provided by the present invention has suitable optical anisotropy, suitable dielectric anisotropy, higher clearing point, wider nematic phase temperature range, faster response speed and good low-temperature storage stability It is suitable for liquid crystal display devices, so that the liquid crystal display devices have the characteristics of fast response, high reliability, and normal operation in a wide temperature range.

The invention provides a liquid crystal composition and a liquid crystal display device thereof. The liquid crystal composition comprises: the compound of general formula I accounting for 2-40% of the total weight of the liquid crystal composition; the compound of general formula II accounting for 5-30% of the total weight of the liquid crystal composition; The compound of general formula III accounting for 15-55% of the total weight; the compound of general formula IV accounting for 2-45% of the total weight of the liquid crystal composition; the compound of general formula V accounting for 0-30% of the total weight of the liquid crystal composition . The liquid crystal composition of the present invention has at least one of the characteristics of high resistivity, high voltage retention, suitable optical anisotropy, suitable dielectric anisotropy, good ultraviolet and high temperature stability, and is suitable for liquid crystal display device. The present invention also provides a liquid crystal display device comprising the liquid crystal composition.