31results about How to "High VHR" patented technology

The invention provides a liquid crystal composition and a liquid crystal display element. The problem to be solved by the present invention is to provide a polymerizable compound-containing liquid crystal composition capable of achieving fast polymerization speed, large tilt angle formation, high tilt angle stability, and high voltage retention rate (VHR), and a PSA or PSVA type liquid crystal display element using same. The method for solving the problem comprises the following steps: providing a liquid crystal composition containing a combination of a plurality of specific polymerizable compounds and a liquid crystal display element using the liquid crystal composition.

The invention provides a transparent display panel and a manufacturing method thereof. The transparent display panel includes a first dye and liquid crystal absorption layer, a third dye and liquid crystal absorption layer and a second display layer which is located between the first dye and liquid crystal absorption layer and the third dye and liquid crystal absorption layer; first dye molecules and first liquid crystal molecules are arranged in the first dye and liquid crystal absorption layer, and the long axis directions of the first dye molecules are parallel to those of the first liquid crystal molecules; third dye molecules and third liquid crystal molecules are arranged in the third dye and liquid crystal absorption layer, and the long axis directions of the third dye molecules are parallel to those of the third liquid crystal molecules; certain included angles are formed between the long axis directions of the first dye molecules and the long axis directions of the third dye molecules. The transparent display panel adopts a double-layer structure containing the dye and liquid crystal molecules, the transmittance is high, the dark-state brightness is low, and the contrast ratio is high; meanwhile, the VHR of a display area in the second layer is high, the quality of image displaying is good, so that the gray-level is capable of being adjusted to reach a good display contrast ratio, and the transparent display panel has a relatively high response speed.

The invention provides a liquid crystal composition and a liquid crystal display element. An object of the present invention is to provide a liquid crystal composition having a negative dielectric anisotropy (delta epsilon), a high TNI, a large delta n, a small gamma 1, a large K33, and a small gamma 1 / K33. Further, there is provided a VA type or FFS type or IPS type liquid crystal display elementwhich has a fast response speed, has a high VHR, and has little or no display failure using the liquid crystal composition. The liquid crystal composition of the present invention solves the above problems by a liquid crystal composition containing a compound of the formula (SA).

The invention relates to a negative dielectric anisotropy liquid crystal composition and a liquid crystal display device. The liquid crystal composition comprises: at least one compound represented by a formula I; and at least one compound as shown in a formula II. Compared with the prior art, the liquid crystal composition disclosed by the invention has a reduced G1 / K11 or G1 / K33 value on the basis of maintaining proper optical anisotropy value and dielectric anisotropy so as to have relatively short response time, and has high VHR after being irradiated by UV light, so that the display advantages of reducing power consumption and improving stability can be obtained, and the phenomenon of residual images of the display can be avoided / reduced.

The invention provides a liquid crystal composition and its application, which is prepared from the following raw materials: A-type compound, B-type compound and C-type compound; or from the followingraw materials: A-type compound and C-type compound; the A-type compound comprises at least one of compound I, compound II and compound III; the B-type compound comprises more than one of compound IVand compound V; the C-type compound includes more than one of compound VI compound VII and compound VIII. The liquid crystal composition provided by the invention has a wide nematic phase temperaturerange, especially widens the temperature range applied in low temperature, and also has a low viscosity, which is beneficial to improving the liquid crystal display effect and accelerating the response time. The liquid crystal composition of the invention simultaneously has appropriate optical anisotropy, high VHR, good reliability and thermal stability.

Provided are a polymerizable composition of a polymerizable compound represented by formula I and a polymerizable compound represented by formula II, a liquid crystal composition formed by combining this polymerizable composition with a specific liquid crystal component, particularly a PSVA liquid crystal composition suitable for display or TV applications, and a PSA-IPS liquid crystal composition for an IPS mode; in particular, the polymerizable liquid crystal composition has a good solubility, and an adjustable rate of polymerization and morphology after polymerization; furthermore, a “material system” formed from the selected polymerizable component and liquid crystal component has a low rotary viscosity and good photoelectric properties, and has a high VHR after (UV) photoradiation, this avoiding the problems of the occurrence of afterimages in final displays, etc.

The invention discloses a liquid crystal compound, a liquid crystal composition containing the liquid crystal compound and a photoelectric element. The liquid crystal compound is prepared from components in percentage by weight: 6% to 21% of first component (liquid crystal compound) and 79% to 94% of second component; the weight percentage sum of all the components is 100%. The liquid crystal compound provided by the invention has good intermiscibility, broadens a temperature region in low-temperature application and reduces the viscosity; the liquid crystal composition containing the liquid crystal compound reduces Tcn, a low-temperature storage temperature and a low-temperature working temperature of the liquid crystal compound, has a lower viscosity, is beneficial for improving a liquidcrystal display effect and shortening response time, is related to proper optical anisotropy, higher dielectric anisotropy, a lower threshold voltage, a higher VHR (Voltage Holding Ratio), excellentreliability and thermal stability, and is applied to positive TN-TFT (Twisted Nematic Thin Film Transistor), IPS (In-Plane Switching), FFS (Fringing Field Switching), PSA (Polymer-Stabilized) mode liquid crystals.

The present invention addresses the problem of providing: a liquid crystal composition which has a negative dielectric constant anisotropy (delta[Epsilon]), a large refractive index anisotropy (deltan), a high nematic-isotropic liquid phase transition temperature (TN I), a low solid-nematic phase transition temperature (TCN), a sufficiently low rotational viscosity (gamma 1) and a large elastic constant (K33); and a liquid crystal display device using the same of VA-, FFS- or IPS-type, etc., which has a high response speed and a high VHR as well as an excellent low-temperature storage stability and shows no or very little display defect. According to the present invention, the above problem is solved by a liquid crystal composition which comprises compounds represented by general formulae(S1), (S2) and (S3).

The invention provides a compound, a liquid crystal composition and a liquid crystal display element. The present invention addresses the problem of providing a liquid crystal display element capable of achieving high-speed responsiveness and a high voltage holding ratio (VHR), a liquid crystal composition containing a polymerizable compound and capable of achieving fast polymerization velocity, adaptive tilt formation, high tilt stability, and a high voltage holding ratio (VHR), a PSA-type or PSVA-type liquid crystal display element in which screen burn-in (IS) is sufficiently suppressed or does not occur and which utilizes the composition; and a compound which is suitable for preparing the liquid crystal composition containing the polymerizable compound. As a solution, the invention provides: a compound having a structure represented by general formula (Y) in the molecule; a liquid crystal composition containing the compound; and an element using the liquid crystal composition. The chemical formula 1 is shown in the specification.

The invention discloses a negative liquid crystal composition and application thereof. The negative liquid crystal composition provided by the invention has low viscosity, proper elastic constant, proper optical anisotropy and good low-temperature intersolubility; and compared with a liquid crystal composition needing to use double-side PI, the negative liquid crystal composition has relatively high VHR and relatively high pretilt angle forming capability by adopting a liquid crystal component prepared from a liquid crystal box without PI on one side.

The invention discloses a liquid crystal composition and a photoelectric element. The composition is prepared from the following components in percentage by weight: 1% to 40% of a first component, 5%to 55% of a second component and 10% to 70% of a third component, and the weight percentage sum of all the ingredients is 100%. The composition is further prepared from a fourth component, wherein according to the weight percentage, the first component is 1% to 40%, the second component is 5% to 55%, the third component is 10% to 60%, the fourth component is 3.5% to 30%, and the weight percentagesum of all the components is 100%. The liquid crystal composition disclosed by the invention has the advantages of extremely low Tcn, low-temperature storage temperature and low-temperature work temperature; the liquid crystal composition can be used for preparing the photoelectric element; application of liquid crystal display is greatly expanded under severe work conditions especially related toan active matrix addressing displayer and in a reinforced liquid crystal displayer; thus, the liquid crystal composition has great significance in domestication of a military wide-temperature-range liquid crystal display device.

The present invention provides a compound represented by General Formula (I). The compound according to the present invention prevents the liquid crystal composition from being deteriorated due to light, has high compatibility with the liquid crystal composition, and does not impair the storage stability of the liquid crystal composition, thus the compound is useful as a constituent member of a liquid crystal composition. Since the liquid crystal composition and the liquid crystal display element containing the compound of the present invention exhibit UV resistance and have a high VHR, it is possible to obtain a liquid crystal display element with excellent display quality in which display defects such as burn-in and display unevenness do not occur or are suppressed.

The invention provides a liquid crystal composition and its application, which is prepared from the following raw materials: A-type compound, B-type compound and C-type compound; or from the followingraw materials: A-type compound and C-type compound; the A-type compound comprises at least one of compound I, compound II and compound III; the B-type compound comprises more than one of compound IVand compound V; the C-type compound includes more than one of compound VI compound VII and compound VIII. The liquid crystal composition provided by the invention has a wide nematic phase temperaturerange, especially widens the temperature range applied in low temperature, and also has a low viscosity, which is beneficial to improving the liquid crystal display effect and accelerating the response time. The liquid crystal composition of the invention simultaneously has appropriate optical anisotropy, high VHR, good reliability and thermal stability.