31results about How to "High VHR" patented technology

The invention relates to a negative liquid crystal composition with a terminal alkene structure and application of the negative liquid crystal composition. The liquid crystal composition contains liquid crystal compounds shown as general formulas I, II, III, IV and V which are described in the specification. The negative liquid crystal composition has negative dielectric anisotropy, high gradient,especially low viscosity and short response time, has good stability and low-temperature intersolubility, strong UV resistance and high VHR and resistivity, and can be applied to display modes of VA,MVA, PVA, FFS, PSVA, IPS, TFT and the like.

The present invention relates to a liquid crystal (LC) medium comprising a terphenyl compound and at least two polymerizable compounds, to a process for its preparation, to its use for optical, electro-optical and electronic purposes, in particular in LC displays, especially in an LC display of the polymer sustained alignment (PSA) type, and to an LC display, especially a PSA display, comprising it.

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 relates to a high-gradient quick-response negative dielectric anisotropy liquid crystal composition and application thereof. The liquid crystal composition contains liquid crystal compounds shown as general formulas I, II, III, IV and V. The liquid crystal composition has an extremely large absolute value of negative dielectric anisotropy and also has high gradient, low viscosity andshort response time, and meanwhile, the liquid crystal composition has better stability and low-temperature intersolubility, stronger anti-UV (Ultraviolet) capability and high VHR (Very High Ratio) and resistivity, and can be applied to display modes such as VA (Vertical Alignment), MVA (Multi-Vertical Alignment), PVA (Polyvinyl Alcohol), FFS (Fringe Field Switching), PSVA, IPS (In-Plane Switching) and TFT (Thin Film Transistor).

The present invention addresses the problem of providing a polymerizable liquid crystal composition which has a negative dielectric anisotropy (delta epsilon), satisfies the display in a wide temperature range, the low-voltage drivability and the high-speed responsiveness required by conventional liquid crystal compositions, and does not or rarely cause display defects when being used as a liquidcrystal display element. Also provided is a narrowed-bezel liquid crystal display element using the liquid crystal composition. The liquid crystal composition which contains one or more compounds selected from the group consisting of compounds represented by general formula (N-1) and one or more polymerizable compounds and has the negative dielectric anisotropy (delta epsilon), and the liquid crystal display element which uses the liquid crystal composition, are provided.

The problem to be solved by the present invention is to provide: a liquid-crystal composition which has a negative value of dielectric anisotropy (Delta epsilon), a high TNI, a high Delta n, and a lowgamma 1; a VA-, FFS-, or IPS-mode liquid-crystal display element which includes the liquid-crystal composition and which has a high response speed and a high VHR and has no or few display failures; and a PSA element obtained using a polymerizable compound. The liquid-crystal composition of the present invention contains a compound of general formula (i), the abovementioned problem being solved therewith.

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 invention belongs to the technical field of liquid crystal materials, and particularly relates to a liquid crystal composition and a liquid crystal display element or a liquid crystal display containing the liquid crystal composition. The invention discloses a liquid crystal composition which comprises at least two of compounds as shown in a formula I, a formula II, a formula III, at least two compounds as shown in a formula IV, at least two of compounds as shown in a formula V and a polymerizable compound as shown in a formula VI. The liquid crystal composition provided by the invention has the characteristics of high dielectric, high K value, low rotary viscosity, high VHR and the like, and can be used for developing liquid crystal display elements or liquid crystal displays with low power consumption, low box thickness, quick response and high reliability. The liquid crystal composition provided by the invention also has a proper pretilt angle, and is especially suitable for large-size panel displays.

The invention relates to a negative liquid crystal composition with excellent low-temperature storage and display performance and an application thereof. The liquid crystal composition comprises liquid crystal compounds represented by general formulas I, II, III, IV and V. The liquid crystal composition has quite good low-temperature intersolubility and low-temperature response speed while havinga quite large absolute value of negative dielectric anisotropy; meanwhile, the liquid crystal composition has good stability, low viscosity, strong UV resistance, high VHR and high resistivity, and can be applied to VA, MVA, PVA, FFS, PSVA, IPS, TFT and other display modes.

The present invention addresses the problem of providing: a polymerizable liquid crystal composition which satisfies various properties required for liquid crystal display elements such as high-speedresponse, high contrast, and low power consumption, can reduce a UV irradiation process time, and is useful for production of a PSA or PSVA liquid crystal display element having high reliability; anda liquid crystal display element using the polymerizable liquid crystal composition. Provided is a polymerizable liquid crystal composition which contains one or more liquid crystal compounds and oneor more polymerizable compounds represented by general formula (i): P<i1>-Sp<i1>-Ms<i1>-Sp<i2>-P<i2>, wherein the total contained amount of the polymerizable compounds is 0.4-10.0 mass% in the polymerizable liquid crystal composition containing the liquid crystal compounds and the polymerizable compounds. Also, provided is a liquid crystal display element using the polymerizable liquid crystal composition.

The invention provides a liquid crystal composition containing a polymerizable compound and a liquid crystal display element. The present invention addresses the problem of providing: a polymerizable liquid crystal composition which can be rapidly and sufficiently polymerized, can form a tilt with weak or little UV light, has excellent reliability after a UV irradiation step, and is useful when used in the production of a liquid crystal display element; and a liquid crystal display element using the polymerizable liquid crystal composition. [Solution] The present invention provides a liquid crystal composition containing a polymerizable compound, the composition containing one or more compounds represented by general formula (i) and one or more polymerizable compounds, the total content of the compounds represented by general formula (i) being within a predetermined range.

The invention provides a liquid crystal composition containing polymerizable compounds and a liquid crystal display device. The liquid crystal composition comprises at least one polymerizable compound shown as a general formula I, at least one compound shown as a general formula II and at least one compound shown as a general formula III. The liquid crystal composition has relatively long low-temperature storage time, relatively good pre-tilt angle stability and relatively low polymer residue under the conditions of relatively small polymer layer surface roughness and relatively high VHR, and can effectively improve the problem of broken bright spots existing in a liquid crystal display when being applied to the liquid crystal display, so that the liquid crystal display has relatively good application prospects. The liquid crystal display device has the advantages of improving the display quality of the liquid crystal display device, accelerating the production process of the PSA type liquid crystal display device, accelerating the production efficiency, improving the problems of'image sticking 'and uneven display in the liquid crystal display device, and having higher practical application value.

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 liquid crystal composition with negative dielectric anisotropy ([delta]epsilon), Tni and [delta]n appropriately adjusted, and a small [gamm]1, and also to provide a VA type, FFS type or IPS type of a liquid crystal display element using the liquid crystal composition; and the liquid crystal display element has fast response speed, high VHR, no display defect or very few display defects, and can be used in a wide temperature range from low temperature to high temperature. The liquid crystal composition of the present invention uses a liquid crystal composition containing a compound of the general formula (i) to solve the above-mentionedproblems.

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 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 the formula (K-1) 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 provides a liquid crystal composition and a liquid crystal display device thereof. The liquid crystal composition comprises at least one compound as shown in a general formula I and at least one polymerizable compound as shown in a general formula II. The liquid crystal composition has the advantages of small polymer layer surface roughness, good low-temperature storage stability, fast angular velocity, low polymer residue, high VHR and good pre-tilt angle stability. When the liquid crystal composition is applied to a liquid crystal display, the display quality of the liquid crystal display can be improved, the production process of a PSA type liquid crystal display can be accelerated, the production efficiency can be improved, the problems of'image viscosity ', 'broken bright spots' and uneven display in the liquid crystal display can be solved, and the liquid crystal composition has high practical application value.

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.