TW202001359A - Liquid crystal composition, liquid crystal display element and liquid crystal display wherein the liquid crystal composition has a relatively low viscosity, moderate dielectric anisotropy [Delta][epsilon], optimal optical anisotropy [Delta]n, and high stability to heat and light - Google Patents
Liquid crystal composition, liquid crystal display element and liquid crystal display wherein the liquid crystal composition has a relatively low viscosity, moderate dielectric anisotropy [Delta][epsilon], optimal optical anisotropy [Delta]n, and high stability to heat and light Download PDFInfo
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Abstract
Description
本發明涉及液晶顯示技術領域,具體涉及一種液晶組合物以及包含該液晶組合物的液晶顯示元件或液晶顯示器。The present invention relates to the technical field of liquid crystal display, in particular to a liquid crystal composition and a liquid crystal display element or liquid crystal display containing the liquid crystal composition.
在LCD的發展過程中,目前LCD用液晶向著反應速度更快,信賴性更好的方向發展,而液晶混合物的高速反應特性來源於其組分的相應物理參數,如旋轉黏度γ1、彈性常數(K)等,高的Δn則有助於減小液晶盒的厚度,進而提高反應速度,同時高的清亮點也有助於混晶的組合搭配。由此可以看到,理想的液晶單體應具有低γ1,適當折射率,高清亮點等特徵。During the development of LCDs, the liquid crystals used in LCDs are developing toward faster response and better reliability. The high-speed response characteristics of liquid crystal mixtures are derived from the corresponding physical parameters of their components, such as rotational viscosity γ1 and elastic constants ( K) Etc., a high Δn helps to reduce the thickness of the liquid crystal cell, thereby improving the reaction speed, and at the same time, the high clearing point also helps to mix and match the mixed crystal. It can be seen from this that the ideal liquid crystal monomer should have low γ1, appropriate refractive index, high-definition bright spots and other characteristics.
為了實現快速反應,高清亮點,高信賴性,高穿透率等特徵,在選取單晶時採用將雙鍵引入分子結構的策略,以提高清亮點並保證較低的旋轉黏度。在實現高速反應時,高穿透率往往很難達到,因為在提升穿透率的同時,會造成旋轉黏度的升高,從而降低反應速度。In order to achieve fast response, high-definition highlights, high reliability, high penetration rate and other characteristics, the strategy of introducing double bonds into the molecular structure is adopted when selecting single crystals to improve clearing points and ensure lower rotational viscosity. When achieving high-speed reaction, high penetration rate is often difficult to achieve, because while increasing the penetration rate, it will cause the rotation viscosity to increase, thereby reducing the reaction speed.
本發明的目的在於提供一種液晶組合物及包含該液晶組合物的液晶顯示元件或液晶顯示器,該組合物包含高介電及高清亮點液晶化合物,組分中高清亮點液晶化合物提供高信賴性,指定稀釋劑具有快速反應特性。包含該液晶組合物的液晶顯示元件或液晶顯示器具有較寬的向列相溫度範圍、合適的雙折射率各向異性、非常高的電阻率、良好的抗紫外線性能、高電壓保持率以及低蒸汽壓等性技術方案。The object of the present invention is to provide a liquid crystal composition and a liquid crystal display element or liquid crystal display comprising the liquid crystal composition, the composition comprising a high dielectric and high-definition bright liquid crystal compound, the high-definition bright liquid crystal compound in the composition provides high reliability, specified The thinner has fast response characteristics. The liquid crystal display element or liquid crystal display containing the liquid crystal composition has a wide nematic phase temperature range, suitable birefringence anisotropy, very high resistivity, good ultraviolet resistance, high voltage retention rate and low steam Equivalent technical solutions.
為了解決上述技術問題,本發明提供了一種液晶組合物,所述液晶組合物包含一種或多種式I化合物、一種或多種式II化合物、一種或多種式III化合物以及一種或多種式IV化合物,IIIIIIIVIn order to solve the above technical problems, the present invention provides a liquid crystal composition comprising one or more compounds of formula I, one or more compounds of formula II, one or more compounds of formula III and one or more compounds of formula IV, I II III IV
其中,R1 、R2 、R3 各自獨立地表示F、碳原子數為1-10的烷基、氟取代的碳原子數為1-10的烷基、碳原子數為1-10的烷氧基、氟取代的碳原子數為1-10的烷氧基、碳原子數為2-10的鏈烯基、氟取代的碳原子數為2-10的鏈烯基、碳原子數為3-8的鏈烯氧基或氟取代的碳原子數為3-8的鏈烯氧基,且R1 、R2 所示基團中任意一個或多個CH2 可以被環丁基或環丙基替代,R3 所示基團中任意一個或多個CH2 可以被環戊基、環丁基或環丙基替代;Where R 1 , R 2 and R 3 each independently represent F, an alkyl group having 1 to 10 carbon atoms, a fluorine-substituted alkyl group having 1 to 10 carbon atoms, and an alkyl group having 1 to 10 carbon atoms Oxygen, fluorine-substituted alkoxy groups having 1-10 carbon atoms, alkenyl groups having 2-10 carbon atoms, fluorine-substituted alkenyl groups having 2-10 carbon atoms, and 3 carbon atoms -8 alkenyloxy group or fluorine-substituted alkenyloxy group having 3-8 carbon atoms, and any one or more of the groups represented by R 1 and R 2 CH 2 may be cyclobutyl or cyclopropyl Group substitution, any one or more CH 2 in the group represented by R 3 may be replaced by cyclopentyl, cyclobutyl or cyclopropyl;
Z1 、Z2 各自獨立地表示單鍵、-CH2 CH2 -、-CH2 O-或-CF2 O-;Z 1 and Z 2 each independently represent a single bond, -CH 2 CH 2 -, -CH 2 O- or -CF 2 O-;
m、k各自獨立地表示1、2或3;m and k independently represent 1, 2 or 3;
n表示0或1;n means 0 or 1;
X1 、X2 、X3 各自獨立地表示H或F;X 1 , X 2 and X 3 each independently represent H or F;
Y1 表示F、三氟甲氧基或者三氟甲基;Y 1 represents F, trifluoromethoxy or trifluoromethyl;
、各自獨立地表示1,4亞苯基和\或1,4亞環己基中的一種或多種; , Each independently represents one or more of 1,4 phenylene and \ or 1,4 cyclohexylene;
表示1,4亞苯基、氟代1,4亞苯基、1,4亞環己基、四氫吡喃基和\或二噁烷基中的一種或多種。 Represents one or more of 1,4 phenylene, fluorinated 1,4 phenylene, 1,4 cyclohexylene, tetrahydropyranyl, and/or dioxan.
所述一種或多種式Ⅰ所示化合物較佳為式Ⅰ1-Ⅰ11所示化合物中的一種或多種Ⅰ1Ⅰ2Ⅰ3Ⅰ4Ⅰ5Ⅰ6Ⅰ7Ⅰ8Ⅰ9Ⅰ10Ⅰ11The one or more compounds of formula I are preferably one or more of the compounds of formula I1-I11 Ⅰ1 I2 Ⅰ3 Ⅰ4 Ⅰ5 Ⅰ6 Ⅰ7 Ⅰ8 Ⅰ9 Ⅰ10 Ⅰ11
其中,R11 、R21 各自獨立地表示碳原子數為1-10的鏈烷基、氟取代的碳原子數為1-10的鏈烷基、碳原子數為1-10的烷氧基、氟取代的碳原子數為1-10的烷氧基、碳原子數為2-10的鏈烯基、氟取代的碳原子數為2-10的鏈烯基、碳原子數為3-8的鏈烯氧基或氟取代的碳原子數為3-8的鏈烯氧基。所述一種或多種式Ⅱ所示化合物較佳為以下式Ⅱ1-Ⅱ22所示化合物中的一種或多種Ⅱ1Ⅱ2Ⅱ3Ⅱ4Ⅱ5Ⅱ6Ⅱ7Ⅱ8Ⅱ9Ⅱ10Ⅱ11Ⅱ12Ⅱ13Ⅱ14Ⅱ15Ⅱ16Ⅱ17Ⅱ18Ⅱ19Ⅱ20Ⅱ21Ⅱ22Where R 11 and R 21 each independently represent a C 1-10 alkyl group, a fluorine-substituted C 1-10 alkyl group, a C 1-10 alkoxy group, Fluorine-substituted alkoxy groups having 1-10 carbon atoms, alkenyl groups having 2-10 carbon atoms, fluorine-substituted alkenyl groups having 2-10 carbon atoms, and 3-8 carbon atoms Alkenyloxy or fluorine-substituted alkenyloxy having 3 to 8 carbon atoms. The one or more compounds represented by formula II are preferably one or more of the compounds represented by the following formulas II1-II22 Ⅱ1 Ⅱ2 Ⅱ3 Ⅱ4 Ⅱ5 Ⅱ6 Ⅱ7 Ⅱ8 Ⅱ9 Ⅱ10 Ⅱ11 Ⅱ12 Ⅱ13 Ⅱ14 Ⅱ15 Ⅱ16 Ⅱ17 Ⅱ18 Ⅱ19 Ⅱ20 Ⅱ21 Ⅱ22
其中,R31 各自獨立地表示碳原子數為1-5的直鏈烷基;Wherein, R 31 each independently represents a linear alkyl group having 1 to 5 carbon atoms;
(F)各自獨立地表示H或F。(F) Each independently represents H or F.
作為較佳方案,所述液晶組合物中,一種或多種式I所示化合物總質量百分比含量為1-20%,一種或多種式II所示化合物總質量百分比含量為1-30%,一種或多種式III所示化合物總質量百分比含量為20-55%,一種或多種式IV所示化合物總質量百分比含量為1-20%。As a preferred solution, in the liquid crystal composition, the total mass percentage content of one or more compounds represented by formula I is 1-20%, and the total mass percentage content of one or more compounds represented by formula II is 1-30%, one or The total mass percentage of multiple compounds of formula III is 20-55%, and the total mass percentage of one or more compounds of formula IV is 1-20%.
本發明所提供的液晶組合物還可以包含一種或多種式V所示化合物VThe liquid crystal composition provided by the present invention may further comprise one or more compounds represented by formula V V
其中,R4 表示碳原子數為1-10的烷基、氟取代的碳原子數為1-10的烷基、碳原子數為1-10的烷氧基、氟取代的碳原子數為1-10的烷氧基、碳原子數為2-10的鏈烯基、氟取代的碳原子數為2-10的鏈烯基、碳原子數為3-8的鏈烯氧基或氟取代的碳原子數為3-8的鏈烯氧基;且R4 所示基團中中任意一個或多個CH2 可以被環戊基、環丁基或環丙基替代;Where R 4 represents an alkyl group having 1 to 10 carbon atoms, a fluorine-substituted alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, and a fluorine-substituted carbon atom having 1 -10 alkoxy groups, alkenyl groups having 2-10 carbon atoms, fluorine-substituted alkenyl groups having 2-10 carbon atoms, alkenyloxy groups having 3-8 carbon atoms or fluorine-substituted Alkenyloxy group having 3-8 carbon atoms; and any one or more CH 2 in the group represented by R 4 may be replaced by cyclopentyl, cyclobutyl or cyclopropyl;
R5 表示F、氟取代的碳原子數為1-5的烷基、氟取代的碳原子數為1-5的烷氧基、氟取代的碳原子數為2-5的鏈烯基或氟取代的碳原子數為3-8的鏈烯氧基;R 5 represents F, fluorine substituted C 1-5 alkyl group, fluorine substituted C 1-5 alkoxy group, fluorine substituted C 2-5 alkenyl group or fluorine Alkenyloxy groups with 3-8 carbon atoms substituted;
Z3 表示單鍵、-CH2 CH2 -或-CH2 O-;Z 3 represents a single bond, -CH 2 CH 2 -or -CH 2 O-;
r表示0、1、2或3;r means 0, 1, 2 or 3;
、各自獨立地表示:、、、、、和/或中的一種或多種; , Each said independently: , , , , , and / or One or more of
並且,當所述R5 表示F,所述表示,所述Z3 表示單鍵,所述表示且所述r表示2時,所述R4 不為乙烯基。And, when R 5 represents F, the Express , The Z 3 represents a single bond, the Express And when r represents 2, R 4 is not vinyl.
所述一種或多種式V所示化合物較佳為V1-V16所示化合物中的一種或多種Ⅴ1Ⅴ2Ⅴ3Ⅴ4Ⅴ5Ⅴ6Ⅴ7Ⅴ8Ⅴ9Ⅴ10Ⅴ11Ⅴ12Ⅴ13Ⅴ14Ⅴ15Ⅴ16The one or more compounds represented by formula V are preferably one or more of the compounds represented by V1-V16 Ⅴ1 Ⅴ2 Ⅴ3 Ⅴ4 Ⅴ5 Ⅴ6 Ⅴ7 Ⅴ8 Ⅴ9 Ⅴ10 Ⅴ11 Ⅴ12 Ⅴ13 Ⅴ14 Ⅴ15 Ⅴ16
其中,R4 各自獨立地表示碳原子數為1-10的烷基、氟取代的碳原子數為1-10的烷基、碳原子數為1-10的烷氧基、氟取代的碳原子數為1-10的烷氧基、碳原子數為2-10的鏈烯基、氟取代的碳原子數為2-10的鏈烯基、碳原子數為3-8的鏈烯氧基或氟取代的碳原子數為3-8的鏈烯氧基,且R4 所示基團中任意一個或多個CH2 可以被環戊基、環丁基或環丙基替代;Wherein R 4 each independently represents an alkyl group having 1-10 carbon atoms, a fluorine-substituted alkyl group having 1-10 carbon atoms, a carbon atom having 1-10 alkoxy groups, and a fluorine-substituted carbon atom Alkoxy group having 1-10 carbon atoms, alkenyl group having 2-10 carbon atoms, fluorine-substituted alkenyl group having 2-10 carbon atoms, alkenyloxy group having 3-8 carbon atoms or Fluorine substituted alkenyloxy group with 3-8 carbon atoms, and any one or more CH 2 in the group represented by R 4 may be replaced by cyclopentyl, cyclobutyl or cyclopropyl;
(F)各自獨立地表示H或F。(F) Each independently represents H or F.
可選的,本發明所述液晶組合物還可以包含一種或多種式Ⅵ所示的化合物ⅥOptionally, the liquid crystal composition of the present invention may further include one or more compounds represented by formula VI Ⅵ
其中,R6 表示碳原子數為1-10的烷基、碳原子數為1-10的烷氧基、碳原子數為2-10的鏈烯基或碳原子數為3-8的鏈烯氧基;Wherein R 6 represents an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms or an alkene having 3 to 8 carbon atoms. Oxy;
R7 表示碳原子數為1-10的烷基、碳原子數為1-10的烷氧基、碳原子數為3-10的鏈烯基或碳原子數為3-8的鏈烯氧基;R 7 represents an alkyl group having 1-10 carbon atoms, an alkoxy group having 1-10 carbon atoms, an alkenyl group having 3-10 carbon atoms or an alkenyl group having 3-8 carbon atoms ;
、各自獨立地表示或; , Express independently or ;
S表示1、2或3。S represents 1, 2 or 3.
所述一種或多種式Ⅵ所示化合物較佳為Ⅵ-1~Ⅵ-11所示化合物中的一種或多種Ⅵ-1Ⅵ-2Ⅵ-3Ⅵ-4Ⅵ-5Ⅵ-6Ⅵ-7Ⅵ-8Ⅵ-9Ⅵ-10Ⅵ-11The one or more compounds represented by formula VI are preferably one or more of compounds represented by VI-1 to VI-11 Ⅵ-1 Ⅵ-2 Ⅵ-3 Ⅵ-4 Ⅵ-5 Ⅵ-6 Ⅵ-7 Ⅵ-8 Ⅵ-9 Ⅵ-10 Ⅵ-11
其中,R61 各自獨立地表示碳原子數為1-10的烷基、碳原子數為1-10的烷氧基、碳原子數為2-10的鏈烯基或碳原子數為3-8的鏈烯氧基;Where R 61 each independently represents an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, or 3 to 8 carbon atoms Of alkenyloxy;
R71 各自獨立地表示碳原子數為1-10的烷基或碳原子數為3-10的鏈烯基。R 71 each independently represents an alkyl group having 1 to 10 carbon atoms or an alkenyl group having 3 to 10 carbon atoms.
本發明所述液晶組合物還可以包含一種或多種式Ⅶ所示的化合物ⅦThe liquid crystal composition of the present invention may further comprise one or more compounds represented by formula VII Ⅶ
其中,R8 、R9 各自獨立地表示碳原子數為1-10的烷基、氟取代的碳原子數為1-10的烷基、碳原子數為1-10的烷氧基、氟取代的碳原子數為1-10的烷氧基、碳原子數為2-10的鏈烯基、氟取代的碳原子數為2-10的鏈烯基、碳原子數為3-8的鏈烯氧基或氟取代的碳原子數為3-8的鏈烯氧基,且R8 、R9 所示基團中任意一個或多個CH2 可以被環戊基、環丁基或環丙基替代;Wherein, R 8 and R 9 each independently represent an alkyl group having 1 to 10 carbon atoms, a fluorine-substituted alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, or a fluorine substitution Alkoxy groups having 1-10 carbon atoms, alkenyl groups having 2-10 carbon atoms, fluorine-substituted alkenyl groups having 2-10 carbon atoms, and alkenes having 3-8 carbon atoms Oxygen or fluorine substituted alkenyloxy group having 3-8 carbon atoms, and any one or more of CH 2 in the groups represented by R 8 and R 9 may be substituted by cyclopentyl, cyclobutyl or cyclopropyl Substitute
W表示-O-、-S-或-CH2 O-。W represents -O-, -S- or -CH 2 O-.
所述一種或多種式Ⅶ所示化合物較佳為Ⅶ-1~Ⅶ-13所示化合物中的一種或多種Ⅶ-1Ⅶ-2Ⅶ-3Ⅶ-4Ⅶ-5Ⅶ-6Ⅶ-7Ⅶ-8Ⅶ-9Ⅶ-10Ⅶ-11Ⅶ-12Ⅶ-13The one or more compounds represented by formula VII are preferably one or more of the compounds represented by Ⅶ-1 to Ⅶ-13 Ⅶ-1 Ⅶ-2 Ⅶ-3 Ⅶ-4 Ⅶ-5 Ⅶ-6 Ⅶ-7 Ⅶ-8 Ⅶ-9 Ⅶ-10 Ⅶ-11 Ⅶ-12 Ⅶ-13
本發明的另一個目的是提供包含上述任意一種液晶組合物的液晶顯示元件或液晶顯示器;所述顯示元件或顯示器為主動矩陣顯示元件或顯示器或被動矩陣顯示元件或顯示器。Another object of the present invention is to provide a liquid crystal display element or liquid crystal display comprising any one of the above liquid crystal compositions; the display element or display is an active matrix display element or display or a passive matrix display element or display.
可選的,所述液晶顯示元件或液晶顯示器較佳為主動矩陣尋址液晶顯示元件或液晶顯示器。Optionally, the liquid crystal display element or liquid crystal display is preferably an active matrix addressable liquid crystal display element or liquid crystal display.
可選的,所述主動矩陣顯示元件或顯示器具體為TN-TFT或IPS-TFT液晶顯示元件或顯示器。Optionally, the active matrix display element or display is specifically a TN-TFT or IPS-TFT liquid crystal display element or display.
由於採用了上述技術方案,本發明取得的技術進步在於:Due to the adoption of the above technical solutions, the technical progress achieved by the present invention lies in:
本發明液晶組合物,藉由不同類別液晶化合物搭配這一途徑,在提高液晶組合物清亮點的同時,信賴性得到提升,並將旋轉黏度控制在較低水平,結合負性單體的引入,在最小化犧牲旋轉黏度的同時,提高了垂直介電,該液晶組合物將會大幅度提高液晶的顯示速度、信賴性以及穿透率。The liquid crystal composition of the present invention, by combining different types of liquid crystal compounds in this way, while improving the clearing point of the liquid crystal composition, the reliability is improved, and the rotational viscosity is controlled at a low level, combined with the introduction of negative monomers, While minimizing the sacrifice of rotational viscosity, the vertical dielectric is improved, and the liquid crystal composition will greatly improve the display speed, reliability, and transmittance of the liquid crystal.
包含本發明液晶組合物的液晶顯示元件或液晶顯示器,具有高的光穿透率,使更多的背光穿透液晶顯示元件或液晶顯示器,從而提高其亮度,降低能源消耗,達到節能降耗的目的。The liquid crystal display element or liquid crystal display containing the liquid crystal composition of the present invention has a high light transmittance, allowing more backlight to penetrate the liquid crystal display element or liquid crystal display, thereby increasing its brightness, reducing energy consumption, and achieving energy saving and consumption reduction purpose.
下面結合具體實施例對本發明作進一步闡述,但本發明並不限於以下實施例。本發明的液晶組合物可採用將液晶化合物混合的方法進行生產,如在高溫下混合不同組分並彼此溶解的方法製備,本發明的液晶組合物也可按照其他常規的製備方法,如採取加熱、超音波及懸浮等方式製備。The present invention is further described below in conjunction with specific embodiments, but the present invention is not limited to the following embodiments. The liquid crystal composition of the present invention can be produced by a method of mixing liquid crystal compounds, such as a method of mixing different components at a high temperature and dissolving each other, and the liquid crystal composition of the present invention can also be prepared according to other conventional methods, such as heating , Ultrasonic and suspension preparation.
所述方法如無特別說明均為常規方法。The methods are conventional methods unless otherwise specified.
所述原料如無特別說明均能從揭露商業途徑而得。Unless otherwise specified, the raw materials can be obtained by exposing commercial methods.
所述百分比如無特別說明,均為質量百分比。Unless otherwise specified, the percentages are all mass percentages.
液晶化合物也可以稱之為液晶單體。The liquid crystal compound may also be called a liquid crystal monomer.
溫度為攝氏度(℃),其他符號的具體意義及測試條件如下:The temperature is in degrees Celsius (℃). The specific meanings and test conditions of the other symbols are as follows:
Cp表示液晶清亮點(℃),DSC定量法測試;Cp means liquid crystal clear point (℃), DSC quantitative test;
S-N表示液晶的晶態到向列相的熔點(℃);S-N represents the melting point of liquid crystal to nematic phase (℃);
Δn表示光學各向異性,Δn=ne -no ,no 為尋常光的折射率,ne 為非尋常光的折射率,測試條件為25±2℃,589nm,阿貝折射儀測試;Δn represents optical anisotropy, Δn=n e -n o , n o is the refractive index of ordinary light, n e is the refractive index of unusual light, the test condition is 25±2℃, 589 nm, Abbe refractometer test;
Δε表示介電各向異性,Δε=ε∥-ε⊥,其中,ε∥為平行於分子軸的介電常數,ε⊥為垂直於分子軸的介電常數,測試條件為25±0.5℃,20微米平行盒,INSTEC:ALCT-IR1測試;Δε represents dielectric anisotropy, Δε=ε∥-ε⊥, where ε∥ is the dielectric constant parallel to the molecular axis, ε⊥ is the dielectric constant perpendicular to the molecular axis, the test condition is 25±0.5℃, 20 micron parallel box, INSTEC: ALCT-IR1 test;
γ1表示旋轉黏度(mPa·s),測試條件為25±0.5℃,20微米平行盒,INSTEC:ALCT-IR1測試;γ1 represents rotational viscosity (mPa·s), the test condition is 25±0.5℃, 20 micron parallel box, INSTEC: ALCT-IR1 test;
ρ表示電阻率(Ω·cm),測試條件為25±2℃,測試儀器為TOYO SR6517高阻儀和LE-21液體電極。ρ represents resistivity (Ω·cm), the test condition is 25±2℃, the test instrument is TOYO SR6517 high resistance instrument and LE-21 liquid electrode.
VHR表示電壓保持率(%),測試條件為20±2℃、電壓為±5V、脈衝寬度為10ms、電壓保持時間16.7ms。測試設備為TOYO Model6254液晶性能綜合測試儀。VHR represents the voltage retention rate (%), the test condition is 20±2℃, the voltage is ±5V, the pulse width is 10ms, and the voltage retention time is 16.7ms. The test equipment is TOYO Model6254 liquid crystal performance comprehensive tester.
τ表示反應時間(ms),測試儀器為DMS-501,測試條件為25±0.5℃,測試盒為3.3微米IPS測試盒,電極間距和電極寬度均為10微米,摩擦方向與電極夾角為10°。τ represents the reaction time (ms), the test instrument is DMS-501, the test condition is 25±0.5℃, the test box is a 3.3 micron IPS test box, the electrode spacing and electrode width are both 10 micrometers, and the angle between the rubbing direction and the electrode is 10° .
T(%)表示透過率,T(%)=100%* 亮態(Vop)亮度/光源亮度,測試設備為DMS-501,測試條件為25±0.5℃,測試盒為3.3微米IPS測試盒,電極間距和電極寬度均為10微米,摩擦方向與電極夾角為10°T(%) represents the transmittance, T(%)=100%* Bright state (Vop) brightness/light source brightness, the test equipment is DMS-501, the test condition is 25±0.5℃, the test box is 3.3 micron IPS test box, The electrode spacing and electrode width are 10 microns, and the angle between the rubbing direction and the electrode is 10°
K11 為扭曲彈性常數,K33 為展曲彈性常數,測試條件為:25℃、INSTEC:ALCT-IR1、18微米垂直盒;K 11 is the torsional elastic constant, K 33 is the unfolding elastic constant, the test conditions are: 25℃, INSTEC: ALCT-IR1, 18 micron vertical box;
本發明申請實施例液晶單體結構用代碼表示,液晶環結構、端基、連接基團的代碼表示方法見下表(一)、表(二)The liquid crystal monomer structure of the application examples of the present invention is represented by codes, and the code representation methods of the liquid crystal ring structure, end groups and connecting groups are shown in the following table (1) and table (2)
表(一):環結構的對應代碼
表(二):端基與鏈接基團的對應代碼
舉例:CC-Cp-V1PGUQU-3-FExamples: CC-Cp-V1 PGUQU-3-F
實施例1:
實施例1提供的液晶組合物,具有較低的黏度,可以實現快速反應,同時具有適中的介電各向異性Δε、適宜的光學各向異性Δn、高的對熱和光的穩定性。式Ⅰ所示化合物能夠提供液晶組合物高的垂直介電,提高液晶組合物的穿透率。式Ⅱ所示化合物為液晶組合物提供高的清亮點,使液晶組合物具有高的信賴性。式Ⅲ和式Ⅳ所示化合物作為指定的稀釋劑,使液晶組合物具有低的旋轉黏度,提高反應速度。The liquid crystal composition provided in Example 1 has a low viscosity, can realize a rapid response, and has moderate dielectric anisotropy Δε, suitable optical anisotropy Δn, and high stability to heat and light. The compound represented by formula I can provide a high vertical dielectric of the liquid crystal composition and improve the transmittance of the liquid crystal composition. The compound represented by formula II provides a high clearing point for the liquid crystal composition and makes the liquid crystal composition highly reliable. The compounds represented by Formula III and Formula IV serve as the designated diluent, so that the liquid crystal composition has a low rotational viscosity and improves the reaction speed.
實施例2:
實施例2提供的液晶組合物,在實施例1的基礎上加入了式Ⅴ所示化合物,式Ⅴ所示化合物能夠為液晶組合物提供大的彈性常數和清亮點,提高液晶組合物的穿透率和信賴性。In the liquid crystal composition provided in Example 2, the compound represented by Formula V is added on the basis of Example 1, and the compound represented by Formula V can provide a large elastic constant and clearing point for the liquid crystal composition and improve the penetration of the liquid crystal composition Rate and reliability.
實施例3:
實施例3提供的液晶組合物,在實施例2的基礎上加入了式Ⅵ所示化合物,式Ⅵ所示化合物具有良好的溶解性,並能夠為液晶組合物進一步提供大的彈性常數,進一步提高液晶組合物的穿透率。In the liquid crystal composition provided in Example 3, the compound represented by formula VI is added on the basis of Example 2, the compound represented by formula VI has good solubility, and can further provide a large elastic constant for the liquid crystal composition and further improve The transmittance of the liquid crystal composition.
實施例4:
實施例4提供的液晶組合物,在實施例3的基礎上加入了式Ⅶ所示化合物,式Ⅶ所示化合物具有大的垂直介電,能夠進一步提高液晶組合物的穿透率。In the liquid crystal composition provided in Example 4, the compound represented by Formula VII is added on the basis of Example 3, and the compound represented by Formula VII has a large vertical dielectric, which can further increase the transmittance of the liquid crystal composition.
實施例5:
實施例6:
藉由對實施例1液晶組合物中的CC-3-V和CCG-V-F分別進行替換,其餘組分不變,得到對比例1-4。對比例1使用相同質量的CCG-3-F替換實施例1中的CCG-V-F,對比例2使用相同質量的CC-4-V替換實施例1中的CC-3-V,對比例3使用相同質量的CC-5-V替換實施例1中的CC-3-V,對比例4使用相同質量的CCG-3-F替換實施例1中的CCG-V-F,相同質量的CC-4-V替換實施例1中的CC-3-V。在相同條件下對實施例1和對比例1-4進行γ1的測試,可以看出,分別對CC-3-V和CCG-V-F做替換後,γ1有不同程度上升,將導致對比例1-4提供的液晶組合物反應速度變慢,因此,在包括式Ⅰ和式Ⅱ的液晶組合物中,CCG-V-F和CC-3-V組合作為指定的稀釋劑能夠實現降低γ1,提高反應速度的作用。By replacing CC-3-V and CCG-V-F in the liquid crystal composition of Example 1, the remaining components remain unchanged, and Comparative Examples 1-4 are obtained. Comparative Example 1 uses the same quality CCG-3-F instead of CCG-VF in Example 1, Comparative Example 2 uses the same quality CC-4-V instead of CC-3-V in Example 1, and Comparative Example 3 CC-5-V of the same quality replaces CC-3-V in Example 1, and Comparative Example 4 uses CCG-3-F of the same quality instead of CCG-VF in Example 1, CC-4-V of the same quality Replace CC-3-V in Example 1. Under the same conditions, Example 1 and Comparative Examples 1-4 were tested for γ1. It can be seen that after replacing CC-3-V and CCG-VF respectively, γ1 increased to varying degrees, which will result in Comparative Example 1- 4 The reaction speed of the liquid crystal composition provided becomes slower. Therefore, in the liquid crystal composition including formula I and formula II, the combination of CCG-VF and CC-3-V as the specified diluent can achieve the reduction of γ1 and increase the reaction speed. effect.
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