A liquid crystal composition
A technology of liquid crystal composition and compound, which is applied in the direction of liquid crystal materials, instruments, chemical instruments and methods, etc., and can solve the problems of restrictive effect, limited amount of addition, insufficient solubility, etc.
Active Publication Date: 2019-01-04
SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD
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Problems solved by technology
[0007] The quaterphenyl structure (CN200710180192.9) is used in liquid crystal compositions to improve the VHR effect of liquid crystals after UV irradiation to improve the display effect. However, due to insufficient solubility, the amount of addition is limited, which limits its effect
Method used
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Effect test
Embodiment 1
[0055] Embodiment 1, each compound listed in the following table and percentage by weight are prepared the liquid crystal composition of the present invention, it is filled between two substrates of liquid crystal display and carries out performance test, and test data is as shown in the table below:
[0056]
Embodiment 2
[0061] Embodiment 2, each compound listed in the following table and percentage by weight are prepared the liquid crystal composition of the present invention, it is filled between two substrates of liquid crystal display and carries out performance test, and test data is as shown in the table below:
[0062]
[0063]
Embodiment 3
[0067] Embodiment 3, each compound listed in the following table and percentage by weight are prepared the liquid crystal composition of the present invention, it is filled between two substrates of liquid crystal display and carries out performance test, and test data is as shown in the following table:
[0068]
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The invention provides a liquid crystal composition. The liquid crystal composition contains one or more compounds as shown in formula I, one or more compounds as shown in formula II and one or more compounds as shown in formula III, and the formula I, the formula II and the formula III are shown in the description. The liquid crystal composition has lower viscosity, can realize quick response, and has moderate dielectric anisotropy delta epsilon, moderate optical anisotropy delta n, and high heat stability and light stability. A liquid crystal display element or a liquid crystal display device comprising the liquid crystal composition has the properties such as wider nematic phase temperature range, appropriate birefringence anisotropy, very high resistivity, better ultraviolet resistance, high charge retention rate, low vapor pressure and better low-temperature intersolubility.
Description
technical field [0001] The invention belongs to the field of liquid crystal display, and in particular relates to a liquid crystal composition and a liquid crystal display element comprising the liquid crystal composition. Background technique [0002] The optical properties of liquid crystals can be changed by an applied voltage, so this substance is mainly used as a dielectric in display devices. In the field of liquid crystal display technology, electro-optical devices based on liquid crystals known to the skilled person are based on various effects. The modes of such devices mainly include dynamic scattering mode, DAP (deformation of aligned phase) mode, guest / host mode, TN mode with twisted nematic structure, STN (super twisted nematic) mode, SBE (super birefringent effect) mode, OMI (Optical Mode Interference) mode and OCB (Optically Compensatory Bending) mode. [0003] In the TFT active matrix system, there are mainly TN (Twisted Nematic, twisted nematic structure) ...
Claims
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IPC IPC(8): C09K19/44G02F1/1333
CPCC09K19/0403C09K19/44C09K2019/0407G02F1/1333
Inventor 乔云霞员国良徐凯丰景义李锐康素敏王明霞刘欢景月月刘露露
Owner SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO LTD