Polymerizable liquid crystal composition and liquid crystal display device
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A technology of polymerizable liquid crystal and composition, applied in liquid crystal materials, instruments, nonlinear optics, etc., can solve the problems of slow response speed and poor anti-ultraviolet performance of TFT-LCD
Active Publication Date: 2020-08-07
JIANGSU HECHENG DISPLAY TECHCO
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Problems solved by technology
[0006] However, due to the limitations of the liquid crystal material itself, TFT-LCD still has many defects such as slow response speed, high voltage, and poor UV resistance.
Method used
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Embodiment 1
[0193] The liquid crystal composition LC-4 of Example 1 was formulated according to the compounds and weight percentages listed in Table 5, and it was filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:
[0194] Table 5 liquid crystal composition formula and test performance thereof
[0195]
[0196] Add 0.5% of the compound represented by the following formula III-1 to 99.5% of the above-mentioned liquid crystal composition LC-4 to prepare the polymerizable liquid crystal composition LCM-4. The physical properties of the obtained LCM-4 are almost unchanged from those before the addition. .
[0197]
[0198] Test the VHR value of the polymerizable liquid crystal composition, specifically as follows:
[0199] VHR (initial): 96.38%;
[0200] VHR (UV 6000mJ): 98.66%.
Embodiment 2
[0202] Add 0.2% of the compound represented by the following formula III-2 and 0.2% of the compound represented by the following formula III-4 to 99.6% of the above-mentioned liquid crystal composition LC-4 to prepare a polymerizable liquid crystal composition LCM-5, The physical property values of the obtained LCM-5 hardly changed from those before the addition.
[0203]
[0204] Test the VHR value of the polymerizable liquid crystal composition, specifically as follows:
[0205] VHR (initial): 96.41%;
[0206] VHR (UV 6000mJ): 98.53%.
Embodiment 3
[0208] Add 0.3% of the compound represented by the following formula III-5 to 99.7% of the above-mentioned liquid crystal composition LC-4 to prepare the polymerizable liquid crystal composition LCM-6. The physical properties of the obtained LCM-6 are almost unchanged from those before the addition. .
[0209]
[0210] Test the VHR value of the polymerizable liquid crystal composition, specifically as follows:
[0211] VHR (initial): 96.4%;
[0212] VHR (UV 6000mJ): 98.82%.
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Abstract
The invention discloses a polymer liquid-crystal composition and a liquid crystal display apparatus comprising same. The polymer liquid-crystal composition comprises one or more compounds selected from a group consisting of a general formula I-1, a general formula I-2 and a general formula I-3 as well as an assembly thereof; one or more compounds selected from a group consisting of a general formula II-1, a general formula II-2, a general formula II-3, a general formula II-4 as well as an assembly thereof; one or more compounds selected from general formula III. The polymer liquid-crystal composition provided by the invention has proper refractive index anisotropy, proper dielectric anisotropy, a relatively wide nematic phase temperature range, a relatively high clearing point, relatively high response speed and good UV stability, can be applicable to a liquid crystal display, can meet the quick response needs of the liquid crystal display and good display needs under the UV condition, and obtains obvious technological progress. The structural formula of I-1, I-2, I-3, II-1, II-2, II-3, II-4 and III are shown in the description.
Description
technical field [0001] The invention relates to a liquid crystal composition and its application, in particular to a polymerizable liquid crystal composition comprising a polymerizable compound and a liquid crystal display comprising the polymerizable liquid crystal composition. Background technique [0002] In recent years, liquid crystal displays have replaced traditional cathode ray tube displays and become mainstream products in the field of information display today, widely used in various displays such as instruments, computers, and televisions. According to different liquid crystal display methods, liquid crystal display elements can be divided into twisted nematic (TN) mode, super twisted nematic (STN) mode, in-plane (IPS) mode, vertical alignment (VA) mode and other modes. [0003] Thin Film Transistor Liquid Crystal Display (TFT-LCD) is one of the most promising display technologies in the 21st century and is widely used in notebook computers, LCD TVs and other fie...
Claims
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