Abstract: The present invention relates to a liquid crystal (LC) display of the FFS type comprising a liquid crystal medium with negative dielectric anisotropy and a di- or multireactive polymerizable compound, and an alignment layer inducing planar alignment in the LC medium.

Abstract: The instant invention relates to liquid crystalline media comprising a chiral component, component A, consisting of one or more chiral compounds, optionally, a bimesogenic component, component B, consisting of one or more bimesogenic compounds, a liquid crystalline component, component C, consisting of one or more liquid crystalline, respectively mesogenic compounds, and a reactive mesogenic component, component D, comprising, one or more reactive mesogenic compounds, as defined in claim 1, to their stabilization by polymerization and to the polymer-stabilised liquid crystal materials, as well as to liquid crystal displays comprising these liquid crystal media, respectively these stabilized materials, especially to USH-displays and in particular to active matrix displays and, last not least, to the processes of preparation of the respective composite systems and of the displays comprising these systems.

Abstract: The present disclosure discloses a liquid crystal compound and a liquid crystal composition. The liquid crystal compound has a general structural formula as represented by formula I. The liquid crystal composition provided by the present disclosure has a lower rotary viscosity ?1, can achieve a quick response, and further has an appropriate dielectric anisotropy ??, an appropriate optical anisotropy ?n, a high stability to heat and light, a high VHR numerical value especially in the case where the liquid crystal is under harsh conditions, and a stability to electric field and electromagnetic radiation. As a liquid crystal material for use in thin film transistor techniques (TFT-LCD), the material further has the properties of a wider nematic phase temperature range, an appropriate birefringence anisotropy, a very high electrical resistivity, a good anti-ultraviolet performance, a high charge holding rate, a low vapor pressure etc.

Abstract: A solution is a compound represented by formula (1), a liquid crystal composition containing the compound and a liquid crystal display device including the composition. In formula (1), Ra and Rb are independently alkyl having 1 to 30 carbons or the like; and X and Y are independently fluoroalkyl having 1 to 5 carbons, fluoroalkoxy having 1 to 5 carbons or pentafluorosulfanil, and one of X and Y may be fluorine.

Abstract: Mesogenic media comprising a first component, component A, consisting of bimesogenic compounds optionally a second component, component B, consisting of nematogenic compounds, and optionally a second or third component, component C, consisting of one or more chiral molecules, is suitable for use in flexoelectric liquid crystal devices.

Abstract: A liquid crystal composition having at least one or a suitable balance regarding at least two of characteristics such as high maximum temperature of a nematic phase, low minimum temperature thereof, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light or heat and a large elastic constant; an AM device having characteristics such as short response time, a large voltage holding ratio, low threshold voltage, a large contrast ratio and long service life are described.

Abstract: According to one embodiment, a liquid crystal display device includes a polarizing layer, first and second substrate units, and a liquid crystal layer. The first substrate unit has first and second surfaces. The first surface is on the polarizing layer side. The second surface is on a side opposite to the first surface. The first substrate unit includes first and second pixel electrodes, and an opening region. The first and second pixel electrodes are disposed on the first surface. The second substrate unit is provided between the first substrate unit and the polarizing layer. The second substrate unit has third and fourth surfaces. The third surface is on the first substrate unit side. The fourth surface is on a side opposite to the third surface. The second substrate unit includes an opposing electrode on the third surface. The liquid crystal layer is provided between the first and third surfaces.

Abstract: The invention relates to bimesogenic compounds of formula I wherein R11, R12, MG11, MG12, X11, X12 and Sp1 have the meaning given in claim 1, to the use of bimesogenic compounds of formula I in liquid crystal media and particular to flexoelectric liquid crystal devices comprising a liquid crystal medium according to the present invention.

Abstract: A liquid crystal compound represented by Formula 1:

Abstract: The present invention relates to nematic liquid-crystal media of negative dielectric anisotropy which have a peak time (tmax.) of 0.25 ms or less, which is determined as described in the disclosure, and which preferably have a value of the quotient of the peak time and the square of the birefringence (tmax/?n2) of 22 ms or less, and to the use of these liquid-crystal media in liquid-crystal displays, and to these liquid-crystal displays.

Abstract: The present invention relates to a liquid-crystal medium which comprises a component A which consists of one or more compounds of the formula I in which the parameters have the respective meanings given in the claims or in the text, and to the corresponding, novel mesogenic compounds and to the preparation thereof. The present invention likewise relates to the use of these liquid-crystal media, in particular in components for high-frequency technology, and to components of this type which contain media according to the invention, and to the production and use of these components. The components according to the invention are suitable, in particular, as phase shifters in the microwave and millimeter wave region, for microwave and millimeter wave array antennae and very particularly for so-called tuneable “reflectarrays”.

Abstract: The inventor of the present invention has investigated various liquid crystal compounds and various chemical substances and found that the object can be achieved by using a combination of particular liquid crystal compounds, thereby making the present invention. In other words, provided are a liquid crystal composition having positive dielectric anisotropy, comprising compounds represented by formula (26.2) and formula (2.5) and one or more compounds represented by general formula (IV), an active matrix driving-liquid crystal display device using the liquid crystal composition, and a liquid crystal display using the active matrix-driving liquid crystal display device: (In the formula, R41 and R42 each independently represent an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 4 or 5 carbon atoms and X41 and X42 each independently represent a hydrogen atom or a fluorine atom.

Abstract: The present invention relates to a liquid crystal (LC) medium comprising a polymerizable compound, to a process for its preparation, to its use for optical, electro-optical and electronic purposes, in particular in an LC display, especially in an LC display of the PSA (“polymer sustained alignment”) type, and to an LC display comprising the LC medium.

Abstract: There is provided a composition containing a compound represented by General Formula (i) and a compound represented by General Formula (ii) (where Ri1, Rii1, and Rii2 each independently represent an alkyl group having 1 to 8 carbon atoms; in the alkyl group, one —CH2— group or two or more —CH2— groups not adjoining each other are each independently optionally substituted with —CH?CH—, —C?C—, —O—, —CO—, —COO—, or —OCO—; mi1 represents 2; Ai1 represents a 1,4-cyclohexylene group or a 1,4-phenylene group of which a hydrogen atom is optionally substituted with a fluorine atom or a chlorine atom; multiple Ai1's may be the same as or different from each other; Zi1 represents a single bond, —CH?CH—, —C?C—, —CH2CH2—, —COO—, or —OCO—; multiple Zi1's may be the same as or different from each other; and Xi1 and Xii1 to Xii4 each independently represent a hydrogen atom or a fluorine atom).

Abstract: The present invention discloses a liquid crystal composition, a liquid crystal mixture and a liquid crystal panel. The liquid crystal composition comprises one or more types of first liquid crystal molecules substituted by difluoroalkenyl group and one or more types of second liquid crystal molecules for vertical alignment. The probability of polymerization between polymerizable monomers and the first liquid crystal molecules can be effectively reduced by the steric effect caused by the difluoroalkenyl group of the first liquid crystal molecules during a process of polymer alignment. Thus, the probability of polymerization occurred between the polymerizable monomers and polyimide on the surface of an alignment film is increased, so as to solve the problem of the image sticking.

Abstract: A liquid crystal composition is described, satisfying at least one of characteristics such as a high maximum temperature of nematic phase, a low minimum temperature of nematic phase, a small viscosity, a suitable optical anisotropy, a large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or having a suitable balance regarding at least two of the characteristics. An AM LCD device including the liquid crystal composition is also described. The liquid crystal composition has a nematic phase and contains a specific compound having a large dielectric anisotropy as a first component, and a specific compound having a small viscosity as a second component, and may also contain a specific compound having a high maximum temperature or a large dielectric anisotropy as a third component.

Abstract: This invention relates to liquid crystal compound of formula I containing a difluoromethyleneoxy linking group that hydrogen substituted by deuterium and therefore being very suitable for formulating a liquid crystal mixture. A liquid crystal mixture containing such type of liquid crystal compounds can be applied in various display devices.

Abstract: A liquid crystal display panel includes a first substrate, a second substrate that faces the first substrate, and a liquid crystal layer interposed between the first substrate and the second substrate. The liquid crystal layer includes liquid crystal molecules that have negative dielectric anisotropy and a nematic-isotropic phase transition temperature (Tni) of about 110° C. or more.

Abstract: In sequential steps including preparing a solution of a compound having —CF2O— as a linking group, bringing the solution into contact with a purifying agent or not bringing the solution into contact with a purifying agent, subsequently performing crystallization from the obtained solution for crystallization to precipitate a crystal, collecting the crystal by filtration, and drying the crystal, steps from the initiation of the crystallization step to the end of the drying step are performed in an atmosphere having an oxygen concentration of 3% by volume or less.

Abstract: There is provided a liquid crystal composition having a positive dielectric anisotropy including: a dielectrically positive component (A) containing a dielectrically positive compound represented by Formula (1), and a dielectrically neutral component (B) having a dielectric anisotropy larger than ?2 and smaller than +2 and containing at least one of dielectrically neutral compounds represented by Formulae (2.1) and (2.2).

Abstract: The present invention relates to a high scattering smectic liquid crystal material and display device using the same. In the present invention, a series of smectic A phase liquid crystals having compact arrangement of crystal domains or a series of smectic liquid crystal mixed materials having a degree of order higher than that of the smectic A phase and an optical texture different from that of the smectic A phase are obtained by mixing a smectic liquid crystal with an organic compound having a high optical anisotropy (?n) or mixing different types of smectic phases. When used in a smectic stable state liquid crystal display pattern, these materials have high scattering properties and can effectively improve the contrast of a smectic liquid crystal display device. The present invention also improves contrast when it used in a reflective smectic liquid crystal display device.

Abstract: The present invention relates to compounds of the formula I to the use thereof for high-frequency components, to liquid-crystalline media comprising the compounds, and to high-frequency components, in particular antennae, especially for the gigahertz range, comprising these media. The liquid-crystalline media serve, for example, for the phase shifting of microwaves for tuneable “phased-array” antennae.

Abstract: A liquid crystal composition including a polymerizable compound, and an AM device including the liquid crystal composition are described. The liquid crystal composition includes the compound (1) and the compound (2): wherein P1 and P2 are polymerizable groups; the rings A, B, C and E are 1,4-cyclohexylene or 1,4-phenylene, etc.; the ring D is 2,3-difluoro-1,4-phenylene, etc.; Z1 and Z2 are alkylene, etc.; L1, Z3 and Z4 are a single bond, etc.; R1 and R2 are alkyl, etc.; and q, r and s are 1, etc.

Abstract: A novel polymerizable monomer compound that can be used for a variety of liquid crystal devices is provided. Particularly, a novel liquid crystal composition including the novel polymerizable monomer compound and exhibiting a blue phase is provided. Further, a liquid crystal display device manufactured with the use of the liquid crystal composition is provided. A polymerizable monomer compound represented by the following general formula (G1) is provided. In the general formula (G1), n and m are individually an integer from 1 to 20 and may be the same as or different from each other, and R1 and R2 individually represent hydrogen or a methyl group.

Abstract: An object is to provide a liquid crystal compound satisfying at least one of physical properties such as a high stability to heat, light and so forth, a high clearing point, a low minimum temperature of a liquid crystal phase, a small viscosity, a suitable optical anisotropy, a large dielectric anisotropy, a suitable elastic constant and an excellent compatibility with other liquid crystal compounds, a liquid crystal composition containing the compound, and a liquid crystal display device including the composition. A solution is the compound represented by formula (1): wherein, in formula (1), for example, R1 is alkyl having 1 to 10 carbons; ring A1 and ring A2 are independently 1,4-cyclohexylene or 1,4-phenylene; Z1 and Z2 are independently a single bond or —CF2O—; L1 and L2 are halogen; and a is 1 or 2.

Abstract: A liquid crystal composition includes a liquid crystal compound having a formula (I), where R1 and R2 are independently selected from the group consisting of H, C1-C10 alkyl, C2-C10 alkenyl, C1-C10 alkoxyl, C2-C10 alkenyloxy, C1-C10 ether, C1-C10 aldehyde, C1-C10 ketone, and C1-C10 ester; A is selected from the group consisting of and X1, X2, X3 and X4 are independently selected from the group consisting of H, halogen group, —CF3, —CHF2, —CH2F, —OCF3, —OCHF2 and —OCH2F, at least one of X1, X2, X3 and X4 being halogen group, —CF3, —CHF2, —CH2F, —OCF3, —OCHF2 or —OCH2F.

Abstract: The present invention relates to liquid-crystal (LC) media for use in LC displays of the PS (polymer stabilized) or PSA (polymer sustained alignment) type.

Abstract: To provide a compound, when the compound has both a high clearing point and a low crystallization temperature, having a wide temperature range of a liquid crystal phase and also an excellent solubility in other liquid crystal compounds, and further having general physical properties necessary for the compound, namely, stability to heat, light and so forth, a suitable optical anisotropy and a suitable dielectric anisotropy. A compound is represented by formula (1): wherein, for example, Ra and Rb are alkyl having 1 to 10 carbons; A1, A2, A3 and A4 are 1,4-phenylene; Z1, Z2, Z3 and Z4 are a single bond or alkylene having 1 to 4 carbons; and m, n, q and r are independently 0, 1, or 2, and a sum of m, n, q and r is 1, 2, 3 or 4.

Abstract: The present invention relates to a liquid crystal (LC) medium, to its use for optical, electro-optical and electronic purposes, in particular in LC displays, especially in LC displays of the PS (“polymer sustained”) or PSA (“polymer sustained alignment”) type, and to LC displays, especially PS or PSA displays, comprising said LC medium.

Abstract: A nematic liquid crystal composition of the present invention is used in liquid crystal display devices of the TN mode, OCB mode, ECB mode, IPS mode, or VA-IPS mode. The liquid crystal composition has positive dielectric anisotropy. Since the refractive index anisotropy and the nematic phase-isotropic liquid phase transition temperature are decreased and the increase in the lower limit temperature of the nematic phase is suppressed, the viscosity of the liquid crystal composition is sufficiently low without degrading the nematic phase temperature range. The liquid crystal composition also offers excellent features such as high-speed response, good display quality, and less display failures and is thus suitable as a practical liquid crystal composition.

Abstract: A blue phase liquid crystal display panel and a fabricating method thereof are provided. A first substrate and a second substrate are provided, and then a blue phase liquid crystal composition is filled between the first substrate and the second substrate, wherein the blue phase liquid crystal composition includes a blue phase liquid crystal and a reactive monomer. Next, an irradiation process is performed to induce a polymerization reaction in the reactive monomer of the blue phase liquid crystal composition, wherein a light utilized in the irradiation process has a wavelength ranged from 200 nm to 350 nm.

Abstract: A liquid crystal composition that includes a polymerizable compound having a high solubility, a composition obtained by polymerizing the polymerizable compound in the liquid crystal composition, and an AM device including any of the compositions are described. The liquid crystal composition has negative dielectric anisotropy, and includes at least one compound selected from the group of compounds represented by formula (1): wherein P1 and P2 are polymerizable groups, and, for example, ring A and ring B are independently an adamantane ring or a noradamantane ring, Z1, Z2 and Z3 are a single bond, and a, b and c are 1.

Abstract: The present invention provides a mixture for liquid crystal medium and a liquid crystal display using the same. The mixture for liquid crystal medium comprises: at least one anisotropic liquid crystal material and a polymerizable monomer which will polymerize under UV irradiation. The weight percentage of the polymerizable monomer accounts for 0.1% to 1% of the total mixture for liquid crystal medium. In the mixture for liquid crystal medium and a liquid crystal display using the same according to the present invention, by using a polymerizable monomer which will polymerize under UV irradiation and the appropriate content ratio, the polymer bump with small size and good uniformity can be obtained within the mixture for liquid crystal medium after the polymerization, which avoids the bad liquid crystal alignment and the light spot occurred at the dark state of the liquid crystal panel, and then increases the response rapid of the liquid crystal panel to obtain high contrast ratio and stable mass production.

Abstract: The invention relates to liquid-crystalline compounds of the formula (I) having a —CF2O— bridge. The invention also relates to liquid-crystalline media prepared therewith and to liquid-crystal display devices (LC displays) containing these media. This kind of compounds has the excellent characteristics including a large dielectric anisotropy, fast response time and high clearing point, and good miscibility at low temperature in the same time which has important significance in new TFT LC mixture.

Abstract: The present invention provides a liquid crystal composition having a sufficiently low viscosity (?), a sufficiently low rotational viscosity (?1), a high elastic constant (K33), and a negative dielectric anisotropy (??) with a high absolute value without decreasing the refractive index anisotropy (?n) and the nematic phase-isotropic liquid phase transition temperature (TNi); and a liquid crystal display device with a VA mode or the like that uses the liquid crystal composition and has high display quality and high response speed. The liquid crystal display device that uses the liquid crystal composition of the present invention has a distinguished feature of high-speed response and is particularly useful as an active matrix driving liquid crystal display device. The liquid crystal display device is applicable to a VA mode, PSVA mode, PSA mode, IPS mode, or ECB mode liquid crystal display device.

Abstract: The present invention relates to an optical switch element, comprising a liquid-crystalline medium for the temperature-dependent regulation of radiant energy flow. The invention furthermore relates to the use of the optical switch element for the regulation of radiant energy flow between interior spaces and the environment and for the regulation of the temperature of interior spaces. The invention furthermore relates to a liquid-crystalline medium, characterized in that it comprises 5-95% of a compound of the formula (I), in particular for use in the optical switch elements according to the invention.

Abstract: A nematic liquid crystal composition according to the invention is used for a liquid crystal display element for an active matrix drive for TV applications or the like for which a quick switching and a wide viewing angle are required. The liquid crystal composition has a negative dielectric anisotropy having a large absolute value and also has a sufficiently low viscosity. Therefore, the liquid crystal composition has excellent characteristic properties, that is, a quick switching, good display quality and a suppressed display defect, and is therefore suitable as a practical liquid crystal composition. Further, a liquid crystal display element produced using the liquid crystal composition can be used favorably as a liquid crystal display element of a VA type or the like.

Abstract: A liquid crystal composition having a negative dielectric anisotropy includes a dielectrically negative component (A) containing a compound represented by a general formula (1) below, and a component (B) that is a dielectrically neutral component containing at least one of compounds represented by a formula (2.1) and a formula (2.2) below. In the following formula, R1 and R2 each independently represent an alkyl group having 1 to 5 carbon atoms.

Abstract: The present description relates to a polymerizable liquid crystal compound, a polymerizable liquid crystal composition including the same, and an optically anisotropic body.

Abstract: A liquid crystal display includes a first substrate, a second substrate, and a liquid crystal layer. The first substrate includes a first insulating substrate, in which a pixel area is defined, a gate line formed on the first insulating substrate, a data line crossing the gate line, and a thin film transistor connected to the gate line and the data line. The second substrate is opposite to the first substrate. The liquid crystal layer is interposed between the first and second substrates and includes a liquid crystal composition with a nematic-isotropic phase transition temperature (Tni) of 79° C. or above.

Abstract: The means concerns a liquid crystal composition that has negative dielectric anisotropy and that comprises a specific compound having a high stability to ultraviolet light as a first component, wherein the composition may comprise a specific compound having a high maximum temperature or a small viscosity as a second component, and a specific compound having a large negative dielectric anisotropy as a third component, and a specific compound having a polymerizable group as an additive component.

Abstract: There is provided a liquid crystal composition comprising: at least one kind of a compound represented by the following formula (i); and at least one kind of a compound represented by the following formula (ii). In the formulae, each of Ri1, Ri2 and Rii1 independently represents an alkyl group having a carbon number of 1-8; one of the alkyl groups, or two or more of the alkyl groups being noncontiguous, include —CH2— which can be independently substituted by —CH?CH—, —C?C—, —O—, —CO—, —COO— or —OCO—; hydrogen atom in the alkyl group can be substituted by fluorine atom or chlorine atom; and each of Xi1, Xi2, Xi3 and Xi4 independently represents hydrogen atom or fluorine atom.

Abstract: Disclosed are liquid-crystal (LC) media for use in LC displays of the PS (polymer stabilized) or PSA (polymer sustained alignment) type which contain a liquid-crystal (LC) mixture that contains one or more compounds of formula I

Abstract: A liquid crystal composition containing a polymerizable compound according to the present invention is used in a liquid crystal display element in which a liquid crystal alignment capability is provided through polymerization. The liquid crystal composition contains a polymerizable compound that polymerizes without a photopolymerization initiator or with an extremely small amount of photopolymerization initiator. Therefore, the alignment properties after the polymerization become more stable and the display characteristics do not degrade. Thus, the polymerizable compound is suitable as a practical component of the liquid crystal composition. A liquid crystal display element that uses the liquid crystal composition containing a polymerizable compound according to the present invention can be suitably used for VA and IPS liquid crystal display elements.

Abstract: The invention is to provide an AM device containing a liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a large optical anisotropy, a large positive dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to and heat, or having a suitable balance regarding at least two of the characteristics, and the AM device having a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth; wherein a liquid crystal display device contains a liquid crystal composition having a positive dielectric anisotropy and containing a specific compound having a large positive dielectric anisotropy as a first component and a specific compound having a small viscosity as a second component.

Abstract: Disclosed are liquid-crystal (LC) media for use in LC displays of the PS (polymer stabilized) or PSA (polymer sustained alignment) type which contain a liquid-crystal (LC) mixture that contains one or more compounds of formula I

Abstract: The invention is to provide a new liquid crystal compound having a high clearing point, a good compatibility with other compounds, a small viscosity, and a high stability to heat, light and so forth; compound (1) is provided: R1CF2nR2??(1) wherein, for example, R1 is alkyl having 4 to 10 carbons or —(CH2)2—CH?CH2, R2 is alkyl having 2 to 10 carbons, n is 8, and R1 and R2 are not allowed to be straight-chain alkyl having an identical number of carbons.

Abstract: The invention provides a liquid crystal compound that has an excellent compatibility with other liquid crystal compounds and also has at least one of characteristics such as a high stability to heat, light or the like, a suitable refractive index anisotropy (?n), a low threshold voltage and a suitable dielectric anisotropy (??). A compound represented by formula (1) For example, R1 is alkyl having 1 to 10 carbons, R2 is halogen or alkenyl having 2 to 10 carbons; the ring A1, the ring A2 and the ring A3 are 1,4-cyclohexylene or 1,4-phenylene; Z1, Z2 and Z3 are a single bond or alkylene having 1 to 4 carbons; G is —CH2— or —O—; and m is 1, and n and p is 0 or 1.

Abstract: The invention relates to compounds of the formula I, and to a liquid-crystalline medium, preferably having a nematic phase and negative dielectric anisotropy, which comprises one or more compounds of formula I, defined herein, for use in an electro-optical display, particularly in an active-matrix display based on the VA, ECB, PALO, FFS or IPS effect, and to the use of the compounds of the formula I for the stabilization of a liquid-crystalline medium which comprises one or more compounds of the formula II and one or more compounds of the formulae III-1 to III-4, defined herein.

Abstract: The present invention relates to 1,4-diethynylbenzene derivatives having substituents in the 2,3-position (cf. formula I, Claims), to the use thereof for high-frequency components, to liquid-crystalline media comprising the compounds, and to high-frequency components, in particular antennae, especially for the gigahertz range, comprising these media. The liquid-crystalline media serve, for example, for the phase shifting of microwaves for tuneable ‘phased-array’ antennae.