Liquid crystal composition and its liquid crystal display device

A technology of liquid crystal compositions and compounds, applied in the directions of liquid crystal materials, instruments, chemical instruments and methods, etc., can solve the problems of unable to display fast-moving pictures, limited adjustment range of driving voltage, difficult AC voltage stable control, etc., and achieve good display effect, high optical anisotropy, effect of improving transmittance

CN111117662BActive Publication Date: 2022-01-18JIANGSU HECHENG DISPLAY TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2022-01-18

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Abstract

The present invention provides a liquid crystal composition, which comprises: at least one compound of general formula I; at least one compound of general formula N; at least one compound of general formula II; and at least one compound of general formula Compounds of M. The present invention also provides a liquid crystal display device comprising the liquid crystal composition. The liquid crystal composition of the present invention has appropriately high optical anisotropy, appropriately high clearing point, high transmittance, large average elastic constant, good low-temperature stability, fast response speed, and low When the liquid crystal composition is applied to an IPS liquid crystal display device, the transmittance of the display device can be effectively improved, so that the display device can have a good display effect.
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Description

technical field

[0001] The invention relates to the field of liquid crystal materials, in particular to a liquid crystal composition and a liquid crystal display device thereof. Background technique

[0002] Liquid Crystal Display (LCD) has been developed rapidly due to its small size, light weight, low power consumption and excellent display quality, and is especially widely used in portable electronic information products. With the increase in the size of LCD screens for portable computers, office applications, and video applications, there are still some problems to be solved in order to enable LCD displays to be used for large-screen display and eventually replace cathode ray tubes (Cathode Ray Tube, CRT). Such as improving viewing angle characteristics, increasing response speed, increasing contrast, increasing transmittance, etc. The relatively narrow viewing angle of the LCD means that when viewed away from the direction perpendicular to the normal line of the liquid...

Examples

Embodiment 1

[0232] The liquid crystal composition of Example 1 was prepared according to the compounds and weight percentages listed in Table 3, which was filled between the two substrates of the liquid crystal display for performance testing.

[0233] Table 3 liquid crystal composition formula and performance parameter test

[0234]

Embodiment 2

[0236] The liquid crystal composition of Example 2 was formulated according to the compounds and weight percentages listed in Table 4, which was filled between the two substrates of the liquid crystal display for performance testing.

[0237] Table 4 liquid crystal composition formula and performance parameter test

[0238]

[0239]

Embodiment 3

[0241] The liquid crystal composition of Example 3 was formulated according to the compounds and weight percentages listed in Table 5, which was filled between the two substrates of the liquid crystal display for performance testing.

[0242] Table 5 liquid crystal composition formula and performance parameter test

[0243]