TWI689574B - 液晶組合物及其液晶顯示元件 - Google Patents

液晶組合物及其液晶顯示元件 Download PDF

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TWI689574B
TWI689574B TW106143002A TW106143002A TWI689574B TW I689574 B TWI689574 B TW I689574B TW 106143002 A TW106143002 A TW 106143002A TW 106143002 A TW106143002 A TW 106143002A TW I689574 B TWI689574 B TW I689574B
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Taiwan
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carbon atoms
fluorine
liquid crystal
substituted
crystal composition
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TW106143002A
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TW201915148A (zh
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舒克倫
梁瑞祥
董豔麗
喬雲霞
趙磊
張虎波
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大陸商石家莊誠志永華顯示材料有限公司
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    • C09K2019/3425—Six-membered ring with oxygen(s) in fused, bridged or spiro ring systems

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Abstract

本發明公開了一種液晶組合物，包含一種或多種式I及/或Ⅱ所示化合物以及一種或多種式Ⅲ所示化合物：
Figure 106143002-A0305-02-0001-1
Figure 106143002-A0305-02-0001-193
Figure 106143002-A0305-02-0001-194
其中各取代基均給出其定義。本發明涉及組合物具有低黏度γ1、高清晰點Tni、大的光學各向異性△n，可以實現液晶顯示的快速反應。

Description

液晶組合物及其液晶顯示元件
本發明涉及液晶顯示領域，具體涉及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。
目前，液晶化合物的應用範圍拓展的越來越廣，其可應用於多種類型的顯示器、光電元件、感測器等中。用於上述顯示領域的液晶化合物的種類繁多，其中向列相液晶應用最為廣泛。向列相液晶已經應用在被動TN、STN矩陣顯示器和具有TFT主動矩陣的系統中。
顯示是把電訊號(數據訊息)轉變為可見光(視覺訊息)的過程，完成顯示的設備即人機界面(Man-Machine Interface,MMI)。平板顯示器(Flat panel Display,FPD)是目前最為流行的一類顯示設備。液晶顯示器(Liquid Crystal Display,LCD)是FPD中最早被開發出來，並被商品化的產品。目前，薄膜電晶體液晶顯示器(Thin Film Transistor Liquid Crystal Display,TFT-LCD)已經成為LCD應用中的主流產品。液晶材料作為液晶顯示器重要的光電子材料之一，對改善液晶顯示器的性能發揮重要的作用。
作為液晶材料，需要具有良好的化學和熱穩定性以及對電場和電磁輻射的穩定性。而作為薄膜電晶體技術(TFT-LCD)用液晶材料，不僅需要具有如上穩定性外，進一步應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、高電荷保持率以及低蒸汽壓等性能。
對於動態畫面顯示應用，消除顯示畫面殘影和拖尾，要求液晶具有很快的反應速度，因此要求液晶具有較低的旋轉黏度γ1；另外，對於可攜式設備，為了降低設備能耗，希望液晶的驅動電壓盡可能低；而對於電視等用途的顯示器來說，對於液晶的驅動電壓要求不是那麼的低。
液晶化合物的黏度，尤其是旋轉粘度γ1直接影響液晶加電後的反應時間，不管是上升時間(ton)還是下降時間(toff)，都與液晶的旋轉黏度γ1成正比關係，上升時間(ton)由於與液晶盒和驅動電壓有關，可以藉由加大驅動電壓的方法與降低液晶盒盒厚來調節；而下降時間(toff)與驅動電壓無關，主要是與液晶的彈性常數與液晶盒盒厚有關，盒厚的下降會降低下降時間(toff)，而不同顯示模式下，液晶分子的運動方式不一樣，TN、IPS、VA三種模式分別與平均彈性常數K、扭曲彈性常數、彎曲彈性常數成反比關係。
依照液晶連續體理論，各種不同的液晶在外力(電場、磁場)作用下發生形變後，會藉由分子間的相互作用，會“回彈”回原來的形狀；同樣的，液晶也是由於分子間的相互作用力形成“黏度”。液晶分子的微小變化，會使液晶的常規參數性能發生明顯的變化，這些變化有的是有一定規律的，有的似乎不易找到規律，對於液晶分子間的相互作用也會產生明顯的影響，這些影響非常微妙，至今也沒有形成很完善的理論解釋。
液晶的黏度與液晶分子結構有關，研究不同液晶分子形成的液晶體系的黏度與液晶分子結構之間的關係是液晶配方工程師的重要任務之一。
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，該液晶組合物具有較低的黏度和較大的光學各向異性△n，可以實現快速反應。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、高電荷保持率以及低蒸汽壓等性能。
為了實現上述有益技術效果，本發明提供一種液晶組合物，包含一種或多種式I及/或Ⅱ所示化合物以及一種或多種式Ⅲ所示化合物：
Figure 106143002-A0305-02-0004-4
Figure 106143002-A0305-02-0004-5
Figure 106143002-A0305-02-0004-6
其中，R1、R2、R4各自獨立地表示碳原子數為1-5的烷基或碳原子數為2-5的鏈烯基；R3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R1、R2、R3、R4所示基團中任意一個或多個不相連的CH2可以被環戊基、環丁基、環丙基或-O-替代；
Figure 106143002-A0305-02-0004-7
、
Figure 106143002-A0305-02-0004-8
各自獨立的表示1,4-亞苯基、1,4-亞環己基或1,4-亞環己烯基。
本發明所述液晶組合物較佳為不包含含有-CN的液晶化合物、不包含含有吡啶、嘧啶環化合物。
本發明更佳地不含有稠環結構的液晶化合物。
本發明所提供的液晶組合物△n[589nm,25℃]>0.08，△ε[1KHz,25℃]>2或△ε[1KHz,25℃]<-2，清晰點Cp>70.0℃，旋轉黏度γ1[25℃]在40~120mPa．s之間。
本發明所提供的液晶組合物，該一種或多種式I及/或Ⅱ所示化合物的總質量含量較佳為1-20%，該一種或多種式Ⅲ所示化合物的總質量含量較佳為5-85%，該一種或多種式Ⅲ-B所示化合物的總質量含量較佳為5-55%。
本發明的液晶組合物不包含含有-CN結構的液晶成分以及含有吡啶、嘧啶環化合物。-CN具有很大的永久偶極矩，電子雲較為豐富，易於吸附陽離子從而導致離子溶劑化，使液晶電學性能的下降，比如電荷保持率VHR、電阻率ρ、功耗等；吡啶、嘧啶環化合物由於在UV下電子易於受到激發而導致品質下降。
各種取代基的不同，式I所示化合物具體為式I1至I4、式Ⅱ所示化合物具體為Ⅱ-1至Ⅱ-5所示化合物：
Figure 106143002-A0305-02-0005-9
Figure 106143002-A0305-02-0005-10
Figure 106143002-A0305-02-0005-11
Figure 106143002-A0305-02-0005-12
Figure 106143002-A0305-02-0006-13
Figure 106143002-A0305-02-0006-14
Figure 106143002-A0305-02-0006-15
Figure 106143002-A0305-02-0006-16
Figure 106143002-A0305-02-0006-18
式I1和Ⅱ1所示化合物普遍具有與其他液晶良好的互溶性，化合物的光學各向異性△n總體偏大，一般大於混合液晶的△n，所以，可以用於低盒厚液晶開發。當含有R2表示碳原子數為1-10的烷氧基時，由於氧原子的共軛參與，△n更大。
該式Ⅲ所示化合物較佳為包含式Ⅲ-1至Ⅲ-10所示化合物中的一種或多種
Figure 106143002-A0305-02-0006-19
Figure 106143002-A0305-02-0006-20
Figure 106143002-A0305-02-0006-21
Figure 106143002-A0305-02-0006-22
Figure 106143002-A0305-02-0006-23
Figure 106143002-A0305-02-0007-24
Figure 106143002-A0305-02-0007-25
Figure 106143002-A0305-02-0007-26
Figure 106143002-A0305-02-0007-27
Figure 106143002-A0305-02-0007-28
本發明液晶組合物可以為正性液晶組合物，所述液晶組合物進一步可以包含一種或多種式Ⅳ所示化合物
Figure 106143002-A0305-02-0007-29
其中，R5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R5所示基團中任意一個CH2可以被環戊基、環丁基或環丙基替代。
Figure 106143002-A0305-02-0007-30
、
Figure 106143002-A0305-02-0007-31
、
Figure 106143002-A0305-02-0007-32
各自獨立地表示：
Figure 106143002-A0305-02-0007-33
、
Figure 106143002-A0305-02-0007-35
、
Figure 106143002-A0305-02-0007-36
、
Figure 106143002-A0305-02-0007-37
、
Figure 106143002-A0305-02-0007-39
、
Figure 106143002-A0305-02-0007-41
及/或
Figure 106143002-A0305-02-0007-42
中的一種或兩種； m表示1或2；Z1、Z2各自獨立地表示單鍵、-CF2O-、-CH2CH2-或-CH2O-；Y1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。
該一種或多種式Ⅳ所示化合物較佳為式Ⅳ1至Ⅳ22所示化合物中的一種或多種
Figure 106143002-A0305-02-0008-44
Figure 106143002-A0305-02-0008-45
Figure 106143002-A0305-02-0008-46
Figure 106143002-A0305-02-0008-47
Figure 106143002-A0305-02-0008-48
Figure 106143002-A0305-02-0008-49
Figure 106143002-A0305-02-0009-50
Figure 106143002-A0305-02-0009-51
Figure 106143002-A0305-02-0009-52
Figure 106143002-A0305-02-0009-53
Figure 106143002-A0305-02-0009-54
Figure 106143002-A0305-02-0009-55
Figure 106143002-A0305-02-0009-56
Figure 106143002-A0305-02-0009-57
Figure 106143002-A0305-02-0009-58
Figure 106143002-A0305-02-0009-59
Figure 106143002-A0305-02-0010-60
Figure 106143002-A0305-02-0010-61
Figure 106143002-A0305-02-0010-62
Figure 106143002-A0305-02-0010-63
Figure 106143002-A0305-02-0010-64
Figure 106143002-A0305-02-0010-65
其中，X1、X2其中一個表示F，另外一個表示H；R5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中任一個CH2可以被環戊基、環丁基、環丙基替代；Y1各自獨立地表示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；(F)各自獨立地表示H或F。
本發明液晶組合物進一步可以為負性液晶組合物，該液晶組合物進一步可以包含一種或多種式V所示的化合物
Figure 106143002-A0305-02-0011-66
其中，R6、R7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R6、R7所示基團中任意一個CH2可以被環戊基、環丁基或環丙基替代；Z3、Z4各自獨立地表示單鍵、-CH2CH2-或-CH2O-；
Figure 106143002-A0305-02-0011-67
、
Figure 106143002-A0305-02-0011-68
各自獨立地表示
Figure 106143002-A0305-02-0011-69
、
Figure 106143002-A0305-02-0011-70
、
Figure 106143002-A0305-02-0011-71
、
Figure 106143002-A0305-02-0011-72
、
Figure 106143002-A0305-02-0011-73
、
Figure 106143002-A0305-02-0011-74
及/或
Figure 106143002-A0305-02-0011-76
中的一種或兩種；o表示1或2；n表示0、1或2。
該一種或多種式V所示的化合物較佳為式V1至V11所示化合物中的一種或多種
Figure 106143002-A0305-02-0011-77
Figure 106143002-A0305-02-0011-78
Figure 106143002-A0305-02-0012-80
Figure 106143002-A0305-02-0012-81
Figure 106143002-A0305-02-0012-82
Figure 106143002-A0305-02-0012-83
Figure 106143002-A0305-02-0012-84
Figure 106143002-A0305-02-0012-85
Figure 106143002-A0305-02-0012-86
Figure 106143002-A0305-02-0012-87
Figure 106143002-A0305-02-0012-79
其中，R6、R7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R6、R7所示基團中任意一個CH2可以被環戊基、環丁基或環丙基替代。
本發明液晶組合物可以為負性液晶組合物，該液晶組合物進一步可以包含一種或多種式Ⅵ所示的化合物
Figure 106143002-A0305-02-0013-88
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CH2可以被環戊基、環丁基或環丙基替代。
式Ⅵ所示的化合物較佳為：
Figure 106143002-A0305-02-0013-89
其中，R81表示碳原子數為1-10的烷氧基。
液晶組合物各成分的不同比例，會表現出略有差異的性能，比如介電各向異性△ε、光學各向異性△n、液晶的向列相轉化為液體的轉變溫度點CP、低溫下穩定性都會有所差異，可以應用於不同類型的顯示元件，但是相同的特點是其旋轉黏度γ1較低。應用於液晶顯示元件，可以實現快速反應。
本發明所提供的液晶化合物中進一步可以加入各種功能的摻雜劑，摻雜劑含量較佳為0.01-1%之間，這些摻雜劑主要是抗氧化劑、紫外線吸收劑、手性劑。
抗氧化劑、紫外線吸收劑較佳為：
Figure 106143002-A0305-02-0014-90
 其中，S表示1-10的整數。
手性劑較佳為(左旋或右旋)：
Figure 106143002-A0305-02-0014-91
本發明進一步涉及包含上述任意一種液晶組合物的液晶顯示元件；該顯示元件為主動矩陣顯示元件或被動矩陣顯示元件。
該液晶顯示元件較佳為主動矩陣尋址液晶顯示元件。
該主動矩陣顯示元件具體可為TN-TFT、IPS-TFT或VA-TFT液晶顯示元件。
本發明所提供的液晶組合物具有較低的黏度，可以實現快速反應，同時具有較大的光學各向異性△n、高的對熱和光的穩定性、適合與低盒厚快速反應液晶開發。
包含本發明所提供的液晶組合物的液晶材料，不但具有良好的化學和熱穩定性以及對電場和電磁輻射的穩定性。而且，作為薄膜電晶體技術(TFT-LCD)用液晶材料，進一步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、高電荷保持率以及低蒸汽壓等性能。
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。所述方法如無特別說明均為常規方法。所述原料如無特別說明均能從公開商業途徑而得。所述百分比如無特別說明，均為質量百分比。
本文中所使用的「顯示元件」一詞，其涵蓋的範圍可包含一般所稱之顯示器、顯示裝置等。
下述實施例中，CP表示清晰點，直接使用WRX-1S顯微熱分析儀測定，設定升溫速率為3℃/min。
△n表示光學各向異性(589nm，25℃)，△ε表示介電各向異性(25℃，1KHz，HP4284A，5.2微米TN左旋盒)，γ1表示25℃時旋轉粘度(mpas)，VHR(%)代表電荷保持率(5V,60Hz,20℃)，ρ(×1013Ω．cm)代表電阻率(20℃)。
電壓保持率VHR(%)的測試儀與電阻率ρ(×1013Ω．cm)均為TOYO06254和TOYO6517型液晶物性評價系統(測試溫度20℃，時間16ms，測試盒為7.0微米)。
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)：
Figure 106143002-A0305-02-0016-92
Figure 106143002-A0305-02-0017-93
Figure 106143002-A0305-02-0017-94
舉例：
Figure 106143002-A0305-02-0017-95
Figure 106143002-A0305-02-0018-195
Figure 106143002-A0305-02-0018-196
實施例1
Figure 106143002-A0305-02-0018-197
比較例1
Figure 106143002-A0305-02-0018-198
Figure 106143002-A0305-02-0019-100
比較例Cp顯著下降。
實施例2
Figure 106143002-A0305-02-0019-101
比較例2
Figure 106143002-A0305-02-0019-102
Figure 106143002-A0305-02-0020-103
比較例Cp顯著下降。
實施例3
Figure 106143002-A0305-02-0020-104
實施例4
Figure 106143002-A0305-02-0021-106
實施例5
Figure 106143002-A0305-02-0021-107
實施例6
Figure 106143002-A0305-02-0021-108
Figure 106143002-A0305-02-0022-109
實施例7
Figure 106143002-A0305-02-0022-110
實施例8
Figure 106143002-A0305-02-0022-111
Figure 106143002-A0305-02-0023-112
實施例9
Figure 106143002-A0305-02-0023-113
實施例10
Figure 106143002-A0305-02-0023-114
Figure 106143002-A0305-02-0024-116
由以上實施例可以看出：本發明的液晶組合物具有較高的Cp，用於液晶顯示，可以實現更寬的使用溫度範圍。尤其適合於車載等寬溫使用範圍的TN、IPS、FFS、VA模式用液晶材料。

Claims (10)

  1. 一種液晶組合物，其包含一種或多種式I所示化合物以及一種或多種式Ⅲ所示化合物，
    Figure 106143002-A0305-02-0025-117
    Figure 106143002-A0305-02-0025-118
     其中，R1、R4各自獨立地表示碳原子數為1-5的烷基或碳原子數為2-5的鏈烯基；R3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R1、R3、R4所示基團中任意一個或多個不相連的CH2可以被環戊基、環丁基、環丙基或-O-替代；
    Figure 106143002-A0305-02-0025-189
    、
    Figure 106143002-A0305-02-0025-192
    各自獨立的表示1,4-亞苯基、1,4-亞環己基或1,4-亞環己烯基。
  2. 如申請專利範圍第1項所述之液晶組合物，其中該一種或多種式Ⅲ所示化合物為式Ⅲ-1至Ⅲ-12所示化合物中的一種或多種
    Figure 106143002-A0305-02-0025-119
    Figure 106143002-A0305-02-0025-120
    Figure 106143002-A0305-02-0025-121
    Figure 106143002-A0305-02-0026-123
    Figure 106143002-A0305-02-0026-124
    Figure 106143002-A0305-02-0026-125
    Figure 106143002-A0305-02-0026-126
    Figure 106143002-A0305-02-0026-127
    Figure 106143002-A0305-02-0026-128
    Figure 106143002-A0305-02-0026-129
    Figure 106143002-A0305-02-0026-130
    Figure 106143002-A0305-02-0026-122
  3. 如申請專利範圍第1或2項所述之液晶組合物，其中該液晶組合物中，該一種或多種式I所示化合物的總質量含量為1-20%，該一種或多種式Ⅲ所示化合物的總質量含量為5-85%。
  4. 如申請專利範圍第1項所述之液晶組合物，其中該液晶組合物為正性液晶組合物，進一步包含一種或多種式Ⅳ所示化合物
    Figure 106143002-A0305-02-0026-131
     其中，R5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R5所示基團中任意一個CH2可以被環戊基、環丁基或環丙 基替代。
    Figure 106143002-A0305-02-0027-132
    、
    Figure 106143002-A0305-02-0027-133
    、
    Figure 106143002-A0305-02-0027-134
    各自獨立地表示：
    Figure 106143002-A0305-02-0027-135
    、
    Figure 106143002-A0305-02-0027-136
    、
    Figure 106143002-A0305-02-0027-137
    、
    Figure 106143002-A0305-02-0027-138
    、
    Figure 106143002-A0305-02-0027-139
    、
    Figure 106143002-A0305-02-0027-140
    及/或
    Figure 106143002-A0305-02-0027-141
    中的一種或兩種；m表示1或2；Z1、Z2各自獨立地表示單鍵、-CF2O-、-CH2CH2-或-CH2O-；Y1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。
  5. 如申請專利範圍第4項所述之液晶組合物，其中該一種或多種式Ⅳ所示化合物為式Ⅳ1至Ⅳ22所示化合物中的一種或多種
    Figure 106143002-A0305-02-0027-142
    Figure 106143002-A0305-02-0027-143
    Figure 106143002-A0305-02-0027-144
    Figure 106143002-A0305-02-0027-145
    Figure 106143002-A0305-02-0027-146
    Figure 106143002-A0305-02-0028-148
    Figure 106143002-A0305-02-0028-149
    Figure 106143002-A0305-02-0028-150
    Figure 106143002-A0305-02-0028-151
    Figure 106143002-A0305-02-0028-152
    Figure 106143002-A0305-02-0028-153
    Figure 106143002-A0305-02-0028-154
    Figure 106143002-A0305-02-0028-155
    Figure 106143002-A0305-02-0028-156
    Figure 106143002-A0305-02-0028-157
    Figure 106143002-A0305-02-0028-147
    Figure 106143002-A0305-02-0029-159
    Figure 106143002-A0305-02-0029-160
    Figure 106143002-A0305-02-0029-161
    Figure 106143002-A0305-02-0029-162
    Figure 106143002-A0305-02-0029-163
    Figure 106143002-A0305-02-0029-158
     其中，X1、X2其中一個表示F，另外一個表示H；R5各自獨立地碳原子數為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中任一個CH2可以被環戊基、環丁基、環丙基替代；Y1各自獨立地表示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；(F)各自獨立地表示H或F。
  6. 如申請專利範圍第1項所述之液晶組合物，其中為負性液晶組合物，該液晶組合物進一步包含一種或多種式V所示的化合物
    Figure 106143002-A0305-02-0030-164
     其中，R6、R7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R6、R7所示基團中任意一個CH2可以被環戊基、環丁基或環丙基替代；Z3、Z4各自獨立地表示單鍵、-CH2CH2-或-CH2O-；
    Figure 106143002-A0305-02-0030-165
    、
    Figure 106143002-A0305-02-0030-166
    各自獨立地表示
    Figure 106143002-A0305-02-0030-167
    、
    Figure 106143002-A0305-02-0030-168
    、
    Figure 106143002-A0305-02-0030-169
    、
    Figure 106143002-A0305-02-0030-170
    、
    Figure 106143002-A0305-02-0030-171
    、
    Figure 106143002-A0305-02-0030-172
    及/或
    Figure 106143002-A0305-02-0030-173
    中的一種或兩種；o表示1或2；n表示0、1或2。
  7. 如申請專利範圍第6項所述之液晶組合物，其中該一種或多種式Ⅳ所示的化合物為式V1至V11所示化合物中的一種或多種
    Figure 106143002-A0305-02-0030-199
    Figure 106143002-A0305-02-0030-201
    Figure 106143002-A0305-02-0031-177
    Figure 106143002-A0305-02-0031-178
    Figure 106143002-A0305-02-0031-179
    Figure 106143002-A0305-02-0031-180
    Figure 106143002-A0305-02-0031-181
    Figure 106143002-A0305-02-0031-182
    Figure 106143002-A0305-02-0031-183
    Figure 106143002-A0305-02-0031-184
    Figure 106143002-A0305-02-0031-176
     其中，R6、R7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R6、R7所示基團中任意一個CH2可以被環戊基、環丁基或環丙基替代。
  8. 如申請專利範圍第1項所述之液晶組合物，其中該液晶組合物為負性液晶組合物，進一步包含一種或多種式Ⅵ所示的化合物
    Figure 106143002-A0305-02-0032-185
     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CH2可以被環戊基、環丁基或環丙基替代。
  9. 一種包含如申請專利範圍第1至8項中任一項所述之液晶組合物的液晶顯示元件，其中該顯示元件為主動矩陣顯示元件或被動矩陣顯示元件。
  10. 如申請專利範圍第9項所述之液晶顯示元件其中該主動矩陣顯示元件為TN-TFT、IPS-TFT或VA-TFT液晶顯示元件。
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