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Liquid crystal composition and display device
Active Publication Date: 2021-01-26
BOE TECH GRP CO LTD
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Problems solved by technology
[0005] The inventors have found that the current liquid crystal compositions used in liquid crystal displays generally have problems such as poor display under low temperature conditions
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Embodiment 1
[0054] The liquid crystal composition includes compounds represented by structural formulas (I) to (VIII):
[0055]
[0056] R 5 -L 5 -L 6 -R 6 (III);
[0057]
[0058] Among them, L 1 ~ L 10 both Z 1 for -C≡C-, Z 2 ,Z 3 and Z 4 Both -COO-; R 1 is n-propyl, R 2 , R 6 Both are vinyl, R 3 is methyl, R 5 , R 9 , R 11 ~R 13 Both are n-propyl, R 7 and R 14 Both are n-butenyl, R 8 is methyl, R 10 is ethoxy;
[0059] Based on the total mass of the liquid crystal composition, the specific ratio of each compound is: the content of compound (I) is 15wt%, the content of compound (II) is 10wt%, the content of compound (III) is 35wt%, compound (IV) The content of compound (V) is 10wt%, the content of compound (V) is 10wt%, the content of compound (VI) is 5wt%, the content of compound (VII) is 5wt%, and the content of compound (VIII) is 10wt%.
Embodiment 2
[0073] The liquid crystal composition includes compounds (I)-(VIII), and the structural formulas of the compounds (I)-(VIII) are the same as those in Example 1.
[0074] Among them, L 1 ~ L 10 both Z 1 for -C≡C-, Z 2 ,Z 3 and Z 4 Both -COO-; R 1 is n-propyl, R 2 , R 6 Both are vinyl, R 3 is methyl, R 5 , R 9 , R 11 ~R 13 Both are n-propyl, R 7 and R 14 Both are n-butenyl, R 8 is methyl, R 10 is ethoxy;
[0075] Based on the total mass of the liquid crystal composition, the specific ratio of each compound is: the content of compound (I) is 10wt%, the content of compound (II) is 15wt%, the content of compound (III) is 35wt%, and the content of compound (IV) The content of compound (V) is 10wt%, the content of compound (V) is 10wt%, the content of compound (VI) is 5wt%, the content of compound (VII) is 5wt%, and the content of compound (VIII) is 10wt%.
Embodiment 3
[0077] The liquid crystal composition includes compounds (I)-(VIII), and the structural formulas of the compounds (I)-(VIII) are the same as those in Example 1.
[0078] Among them, L 1 ~ L 10 both Z 1 for -C≡C-, Z 2 ,Z 3 and Z 4 Both -COO-; R 1 is n-propyl, R 2 , R 6 Both are vinyl, R 3 is methyl, R 5 , R 9 , R 11 ~R 13 Both are n-propyl, R 7 and R 14 Both are n-butenyl, R 8 is methyl, R 10 is ethoxy;
[0079] Based on the total mass of the liquid crystal composition, the specific ratio of each compound is: the content of compound (I) is 20wt%, the content of compound (II) is 5wt%, the content of compound (III) is 35wt%, compound (IV) The content of compound (V) is 10wt%, the content of compound (V) is 10wt%, the content of compound (VI) is 5wt%, the content of compound (VII) is 5wt%, and the content of compound (VIII) is 10wt%.
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Abstract
The invention discloses a liquid crystal composition and a display device. The liquid crystal composition includes compounds of structures shown in general formulas (I) to (II): thus, the liquid crystal composition has a wider nematic phase temperature range, and its crystalline state reaches the melting point S-N of the nematic phase. As low as -50 degrees Celsius, low rotational viscosity, high dielectricanisotropy, high optical anisotropy, and good stability; the liquid crystal composition is suitable for the requirements of fast-response liquid crystal displays, and the image display effect is good without smearing , the required driving voltage is small, the response is fast, and the use environment is wide, which can not only meet the needs of low-temperature work, but also meet the long-time display requirements of low-temperature environments.
Description
technical field [0001] The invention relates to the field of liquid crystal display, in particular to a liquid crystal composition and a display device. Background technique [0002] Liquid crystal is an intermediate phase between the liquid state and the crystalline state. It has both the fluidity of the liquid and the anisotropy of the crystal. As an important functional material in the digital information age, it is widely used in liquid crystal displays, temperature Testing, stress testing, non-destructive testing, chromatography and various spectral analysis and other fields. Among them, the application of liquid crystal materials in the field of liquid crystal display is a hot spot in current research. Various electronic devices used by people, such as smart phones, LCD TVs, notebooks or tablet computers, vehicle-mounted liquid crystal displays and industrial control instrument displays, are inseparable from Turn on the LCD display. With the continuous development of...
Claims
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Application Information
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