Abstract: A compound having the structure of general formula I is useful as a liquid crystal composition and as a photoelectric display device including the liquid crystal composition. The compound having the structure of general formula I is chemically and physically stable, and has higher clearing point, and both large dielectric anisotropy and large optical anisotropy at the same time. The compound having the structure of general formula I is well compatible with other liquid crystal compounds when applied in a liquid crystal composition, the composition has good stability especially in a low-temperature environment, the characteristic of fast response and a wide range of applicabilities, especially applicable to the IPS-type and TN-TFT-type liquid crystal display devices.

Abstract: A compound having the structure of general formula I is useful as a liquid crystal composition and as a photoelectric display device including the liquid crystal composition. The compound having the structure of general formula I is chemically and physically stable, and has higher clearing point, and both large dielectric anisotropy and large optical anisotropy at the same time. The compound having the structure of general formula I is well compatible with other liquid crystal compounds when applied in a liquid crystal composition, the composition has good stability especially in a low-temperature environment, the characteristic of fast response and a wide range of applicabilities, especially applicable to the IPS-type and TN-TFT-type liquid crystal display devices.

Abstract: A liquid crystal display device, being widely used in the fields such as electronic tags, electronic papers, business cards and flexible display screens or the like, and a driving method for the liquid crystal display device. The liquid crystal display device has an upper substrate, a lower substrate and one or more layers of an encapsulated liquid crystal sandwiched between the upper substrate and the lower substrate. The layers of the encapsulated liquid crystal include two different liquid crystal microcapsules uniformly mixed. Combined with a driving method of a combination of high-low voltage and high-low temperature, a color display effect of high contrast and repeatable writing can be achieved.

Abstract: A liquid crystal composition having good photostability and thermostability. The liquid crystal composition comprises: 5-30% of one or more compounds of general formula I based on the total weight of the liquid crystal composition; 1-30% of one or more compounds of general formula II based on the total weight of the liquid crystal composition; 1-30% of one or more compounds of general formula III based on the total weight of the liquid crystal composition; 1-20% of one or more compounds of general formula IV-1 and/or general formula IV-2 based on the total weight of the liquid crystal composition; and 15-50% of one or more compounds of general formula V based on the total weight of the liquid crystal composition. A liquid crystal display element containing the liquid crystal composition is also provided.

Abstract: Provided are a stable alignment type liquid crystal composition and use thereof. The liquid crystal composition has negative dielectric anisotropy, better stability and a large absolute value of dielectric anisotropy. The liquid crystal composition comprises a compound of general formula (I) accounting for 10%-80% of the total weight of the liquid crystal composition, a compound of general formula (II) accounting for 0.0005%-0.5% of the total weight of the liquid crystal composition, a compound of general formula (IV) accounting for 15%-90% of the total weight of the liquid crystal composition, and a polymerizable compound accounting for 0.1%-5% of the total weight of the liquid crystal composition. The liquid crystal composition is less subject to interference of such factors as radicals, oxygen, heat or the like. Also provided is the use of the liquid crystal composition in a liquid crystal display device.

Abstract: A dichromatic dye composition which has the characteristics of higher order parameter and good miscibility can be applied in a guest-host liquid crystal composition. The absorbance curve of a guest-host liquid crystal composition with the dichromatic dye composition within the range of 420-680 nm has the following characteristics: a. 2?(T1+T2)/?T?10; b. |T1?T2|?0.5; c. 0<?T?0.2, where T1 is a difference between a transmittance to light at 420 nm and a minimum transmittance, T2 is a difference between the transmittance at a wavelength of 680 nm and a minimum transmittance, and ?T is a difference between the maximum and minimum transmittances on the transmittance curve within the wavelength range of 420-680 nm. A liquid crystal element with the guest-host liquid crystal composition provides a high-contrast display. A liquid crystal display device has the guest-host liquid crystal composition with the dichromatic dye composition.

Abstract: A triphenylene derivative of general formula (I) or general formula (II) which can be used as a component of liquid crystal medium and the use thereof are provided in the present invention. This compound can be used to form a negative discotic liquid crystal composition having a suitable temperature range of liquid crystal phase and a lower clearing point, which can be used in TFT liquid crystal display as an optical compensation film (cell) material.

Abstract: A liquid crystal composition and a liquid crystal display wherein the liquid crystal composition includes: a compound of general formula (I) including 1%-50% of the total weight of the liquid crystal composition; a compound of general formula (II) including 1%-60% of the total weight of the liquid crystal composition; a compound of general formula (III) including 1%-60% of the total weight of the liquid crystal composition; and a compound of general formula (IV) including 0-50% of the total weight of the liquid crystal composition—wherein the liquid crystal composition has a suitably wider nematic phase scope, a suitable optical anisotropy, a favorable low-temperature storage stability a faster response speed, can be used for outdoor work, has a good image display effect, and substantially free of streaking phenomenon.

Abstract: Provided are a stable alignment type liquid crystal composition and use thereof. The liquid crystal composition has negative dielectric anisotropy, better stability and a large absolute value of dielectric anisotropy. The liquid crystal composition comprises a compound of general formula (I) accounting for 10%-80% of the total weight of the liquid crystal composition, a compound of general formula (II) accounting for 0.0005%-0.5% of the total weight of the liquid crystal composition, a compound of general formula (IV) accounting for 15%-90% of the total weight of the liquid crystal composition, and a polymerizable compound accounting for 0.1%-5% of the total weight of the liquid crystal composition. The liquid crystal composition is less subject to interference of such factors as radicals, oxygen, heat or the like. Also provided is the use of the liquid crystal composition in a liquid crystal display device.

Abstract: A triphenylene derivative of general formula (I) or general formula (II) can be used as a component of liquid crystal medium. The compound can be used to form a negative discotic liquid crystal composition having a suitable temperature range of liquid crystal phase and a lower clearing point, which can be used in TFT liquid crystal displays as an optical compensation film (cell) material.

Abstract: A dichromatic dye composition which has the characteristics of higher order parameter and good miscibility can be applied in a guest-host liquid crystal composition. The absorbance curve of a guest-host liquid crystal composition with the dichromatic dye composition within the range of 420-680 nm has the following characteristics: a. 2?(T1+T2)/?T?10; b. |T1?T2|?0.5; c. 0<?T?0.2, where T1 is a difference between a transmittance to light at 420 nm and a minimum transmittance, T2 is a difference between the transmittance at a wavelength of 680 nm and a minimum transmittance, and ?T is a difference between the maximum and minimum transmittances on the transmittance curve within the wavelength range of 420-680 nm. A liquid crystal element with the guest-host liquid crystal composition provides a high-contrast display. A liquid crystal display device has the guest-host liquid crystal composition with the dichromatic dye composition.

Abstract: A liquid crystal composition and a liquid crystal display wherein the liquid crystal composition includes: a compound of general formula (I) including 1%-50% of the total weight of the liquid crystal composition; a compound of general formula (II) including 1%-60% of the total weight of the liquid crystal composition; a compound of general formula (III) including 1%-60% of the total weight of the liquid crystal composition; and a compound of general formula (IV) including 0-50% of the total weight of the liquid crystal composition—wherein the liquid crystal composition has a suitably wider nematic phase scope, a suitable optical anisotropy, a favorable low-temperature storage stability a faster response speed, can be used for outdoor work, has a good image display effect, and substantially free of streaking phenomenon.