TWI849571B - A positive dielectric liquid crystal composition and its application - Google Patents
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- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
- C09K19/44—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing compounds with benzene rings directly linked
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- G—PHYSICS
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
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Abstract
本發明屬於液晶材料技術領域，具體涉及一種含有苯並色烯化合物的正介電液晶組合物及其在液晶顯示元件或液晶顯示器中的應用。本發明公開的一種液晶組合物，包含式I所示的化合物、式II所示的化合物以及一種或多種-CF2O-類△ε>10的化合物。本發明的液晶組合物，具有彈性常數大，垂直介電比介電比值大，撓曲電好的優勢，可以用於開發透過率高、回應快、對比度高、功耗低以及flicker優等的液晶顯示元器件，尤其適用於工控、筆記本、TV等需要透過率高或者殘像品質高的產品。 The present invention belongs to the field of liquid crystal material technology, and specifically relates to a positive dielectric liquid crystal composition containing a benzochromene compound and its application in a liquid crystal display element or a liquid crystal display. The present invention discloses a liquid crystal composition, comprising a compound shown in Formula I, a compound shown in Formula II, and one or more -CF2O -type compounds with Δε>10. The liquid crystal composition of the present invention has the advantages of a large elastic constant, a large vertical dielectric ratio, and good flexure current, and can be used to develop liquid crystal display components with high transmittance, fast response, high contrast, low power consumption, and excellent flicker, and is particularly suitable for products such as industrial control, notebooks, and TVs that require high transmittance or high afterimage quality.
Description
本發明涉及液晶顯示技術領域。更具體地，涉及一種含有苯並色烯化合物的正介電液晶組合物及其在液晶顯示元件或液晶顯示器中的應用。 The present invention relates to the field of liquid crystal display technology. More specifically, it relates to a positive dielectric liquid crystal composition containing a benzochromene compound and its application in a liquid crystal display element or a liquid crystal display.
隨著20世紀90年代初薄膜晶體管(TFT)技術的成熟，彩色液晶平板顯示器迅速發展，不到10年的時間，薄膜晶體管液晶顯示器(TFT-LCD)迅速成長為主流顯示器，其具有低輻射、低功耗低成本等優勢。目前應用在我們生活的多個方面，諸如電視(TV)、個人電腦(PCs)、平板電腦(Pads)、監視器、手機等領域。 With the maturity of thin film transistor (TFT) technology in the early 1990s, color LCD flat panel displays developed rapidly. In less than 10 years, thin film transistor liquid crystal displays (TFT-LCD) quickly grew into mainstream displays with advantages such as low radiation, low power consumption and low cost. Currently, it is used in many aspects of our lives, such as televisions (TV), personal computers (PCs), tablet computers (Pads), monitors, mobile phones and other fields.
LCD顯示設備根據液晶材料的介電各向異性分為正介電各向異性和負介電各向異性，介電各向異性大於零的為正介電各向異性，介電各向異性小於零的為負介電各向異性。近年來，無論是負介電各向異性液晶顯示材料，還是正介電各向異性液晶顯示材料均成為液晶材料技術領域的研究重點。由於負介電各向異性液晶材料固有的特點，從而導致負介電各向異性液晶材料相對於正介電各向異性液晶材料響應速度慢、可靠性差，存在更高的出現殘像缺陷的風險。但是，正介電各向異性的液晶由於其特殊的光電轉換角度，導致透過率低於負介電各向異性。因此，對回應速度和殘像要求越來越嚴苛的電視 顯示領域，正介電各項異性液晶材料仍然具有一定的優勢，尤其是在研究高透過率方向。 LCD display devices are divided into positive dielectric anisotropy and negative dielectric anisotropy according to the dielectric anisotropy of liquid crystal materials. Dielectric anisotropy greater than zero is positive dielectric anisotropy, and dielectric anisotropy less than zero is negative dielectric anisotropy. In recent years, both negative dielectric anisotropy liquid crystal display materials and positive dielectric anisotropy liquid crystal display materials have become the focus of research in the field of liquid crystal material technology. Due to the inherent characteristics of negative dielectric anisotropy liquid crystal materials, negative dielectric anisotropy liquid crystal materials have a slower response speed and poorer reliability than positive dielectric anisotropy liquid crystal materials, and there is a higher risk of residual image defects. However, due to its special photoelectric conversion angle, the transmittance of liquid crystal with positive dielectric anisotropy is lower than that of liquid crystal with negative dielectric anisotropy. Therefore, in the field of television display, which has increasingly stringent requirements on response speed and residual image, liquid crystal materials with positive dielectric anisotropy still have certain advantages, especially in the research of high transmittance.
提升透過率的主要方向是提升液晶分子的垂直介電的分量，垂直介電的分量增加有助於抑制分子長軸方向的站立，從而使有效延遲量增加，使透過率進行提升。 The main direction to improve transmittance is to increase the vertical dielectric component of the liquid crystal molecules. The increase in the vertical dielectric component helps to suppress the standing of the molecules in the long axis direction, thereby increasing the effective delay and improving the transmittance.
為了提高顯示品質，人們開發了多種顯示模式，如多疇垂直取向技術(MVA)，平面場轉換技術(IPS)，高級超維場轉換技術(ADS)，其中ADS由於其高的穿透率、寬視角等優勢，因而用於具有高分率的高端產品上。目前ADS產品仍有一些問題需要解決，其中一個主要問題是閃爍(Flicker)，尤其是Flicker漂移現象，不僅降低產品品質而且會導致眼睛疲勞甚至頭暈等。一般為了防止液晶老化，TFT-LCD在實際工作時，圖元電壓的極性是週期性變化的，但同時，也使得正負極性的圖元電壓絕對值並不會是完全對稱，由此每幀畫面的亮度會有週期變化，反應在視覺上就是Flicker。為了提高觀看的可視性，降低Flicker水準，許多科研工作者對此進行了深入研究。ADS模式中的Flicker漂移與撓曲電效應有關。液晶的撓曲電效應(flexo-effect)由Meyer在1969年提出，這種效應對液晶分子產生諸多影響。灰階電壓越大撓曲電效應越強，因此用來flicker@V100表示撓曲電。撓曲電越優，Flicker越好，flexo數值越小表示撓曲效果越好，Flicker閃爍越小，漂移速率和程度越小，GAMMA就更容易調節，殘像表現也越好。 In order to improve display quality, people have developed a variety of display modes, such as Multi-Vertical Alignment (MVA), Planar In-Situ Switching (IPS), and Advanced Dimensional Switching (ADS). ADS is used in high-resolution high-end products due to its advantages such as high penetration and wide viewing angle. Currently, ADS products still have some problems to be solved, one of the main problems is flicker, especially flicker drift, which not only reduces product quality but also causes eye fatigue and even dizziness. Generally, in order to prevent liquid crystal aging, the polarity of the pixel voltage changes periodically when TFT-LCD is actually working. However, at the same time, the absolute values of the positive and negative pixel voltages are not completely symmetrical, so the brightness of each frame will change periodically, which is reflected in the visual effect of flicker. In order to improve viewing visibility and reduce the flicker level, many scientific researchers have conducted in-depth research on this. Flicker drift in ADS mode is related to the flexoelectric effect. The flexo-effect of liquid crystal was proposed by Meyer in 1969. This effect has many effects on liquid crystal molecules. The larger the grayscale voltage, the stronger the flexoelectric effect, so flicker@V100 is used to represent flexoelectricity. The better the flex circuit, the better the flicker. The smaller the flexo value, the better the flex effect. The smaller the flicker, the smaller the drift rate and degree. The easier it is to adjust the gamma, and the better the afterimage performance.
因此，極需開發能夠解決上述技術問題的液晶組合物。 Therefore, it is extremely necessary to develop liquid crystal compositions that can solve the above technical problems.
本發明提供一種技術方案，能夠解決以上至少一個技術問題。 The present invention provides a technical solution that can solve at least one of the above technical problems.
本發明的液晶組合物，具有彈性常數大，垂直介電比介電比值大，撓曲電好的優勢，可以用於開發透過率高、回應快、對比度高、功耗低以及flicker優的等的液晶顯示元器件，尤其適用於工控、筆記本、TV等需要透過率高或者殘像品質高的產品。為達到上述第一個目的，本發明採用下述技術方案：本發明提供一種包含苯並色烯的介電各向異性為正性的液晶組合物，所述液晶組合物包含一種或多種式I所示的化合物、一種或多種式II所示的化合物以及一種或多種-CF2O-類△ε>10的化合物，
式I中，R1、R0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2-10的鏈烯基或氟取代的碳原子數為2-10的鏈烯基；其中R1、R0基團中任意一個或多個不相連的-CH2-任選被亞環丙基或亞環戊基替代；式II中，R2、R3各自獨立地表示碳原子數為1-10的鏈烷基或碳原子數為2-10的鏈烯基；
本發明的液晶組合物，優選地，-CF2O-類△ε>10的化合物包含一種或多種式III所示的化合物，還包含一種或多種IV所示的化合物、V所示的化合物、VI所示的化合物、VII所示的化合物、VIII所示的化合物，
式III中，R4表示碳原子數為1-10的鏈烷基，且R4所示基團中任意一個或多個不相連的-CH2-任選被亞環丙基或亞環戊基替代；X1表示H或CH3；X2、X3各自獨立地表示H或F；m表示1或2；n表示1、2或3；
式IV中，R5表示碳原子數為1-10的鏈烷基或碳原子數為2-10的鏈烯基；R6表示碳原子數為1-10的鏈烷基、碳原子數為2-10的鏈烯基或碳原子數為1-10的鏈烷氧基；
式V中，R7表示碳原子數為1-10的鏈烷基；Y1表示-F或-OCF3；X4、X5各自獨立地表示F或H；
式VI中，R8、R9各自獨立地表示碳原子數為1-10的鏈烷基、碳原子數為1-10的鏈烷氧基、碳原子數為2-10的鏈烯基或碳原子數為1-8的鏈烯氧基；
式VII中，Rc表示碳原子數為1-10的鏈烷基；Rd表示-CF3或-OCF3。 In Formula VII, Rc represents a chain alkyl group having 1 to 10 carbon atoms; and Rd represents -CF 3 or -OCF 3 .
式VIII中，Ra、Rb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的鏈烷氧基、氟取代的碳原子數為1-10的鏈烷氧基、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；X表示O或S。 In formula VIII, Ra and Rb each independently represent an alkyl group having 1-10 carbon atoms, an alkyl group having 1-10 carbon atoms substituted with fluorine, an alkoxy group having 1-10 carbon atoms, an alkoxy group having 1-10 carbon atoms substituted with fluorine, an alkenyl group having 2-10 carbon atoms, an alkenyl group having 2-10 carbon atoms substituted with fluorine, an alkenyloxy group having 3-8 carbon atoms, or an alkenyloxy group having 3-8 carbon atoms substituted with fluorine; X represents O or S.
本發明的另一個目的在於提供一種液晶顯示元件或液晶顯示器，其包含本發明的液晶組合物，所述液晶顯示元件或液晶顯示器為主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, which comprises the liquid crystal composition of the present invention, wherein the liquid crystal display element or liquid crystal display is an active matrix display element or display.
本發明中液晶組合物為正介電各向異性液晶組合物，適用於TN，FFS，IPS等顯示模式，尤其適用於邊緣場顯示模式。 The liquid crystal composition in the present invention is a positive dielectric anisotropy liquid crystal composition, which is suitable for display modes such as TN, FFS, IPS, etc., especially for edge field display mode.
本發明的有益效果如下：本發明的液晶組合物，具有彈性常數大，垂直介電比介電比值大，撓曲電好的優勢，可以用於開發透過率高、回應快、對比度高、功耗低以及flicker優的等的液晶顯示元器件，尤其適用於工控、筆記本、TV等需要透過率高或者殘像品質高的產品。 The beneficial effects of the present invention are as follows: The liquid crystal composition of the present invention has the advantages of large elastic constant, large vertical dielectric ratio, and good flexure current, and can be used to develop liquid crystal display components with high transmittance, fast response, high contrast, low power consumption, and excellent flicker, and is particularly suitable for industrial control, notebooks, TVs, and other products that require high transmittance or high afterimage quality.
為了更清楚地說明本發明，下面結合優選實施例對本發明做進一步的說明。本領域技術人員應當理解，下面所具體描述的內容是說明性的而非限制性的，不應以此限制本發明的保護範圍。 In order to explain the present invention more clearly, the present invention is further described below in combination with preferred embodiments. Those skilled in the art should understand that the content described below is illustrative rather than restrictive, and should not be used to limit the scope of protection of the present invention.
[液晶組合物] [Liquid crystal composition]
本發明提供一種包含苯並色烯的介電各向異性為正性的液晶組合物，，所述液晶組合物包含一種或多種式I所示的化合物、一種或多種式II所示的化合物以及一種或多種-CF2O-類△ε>10的化合物，
式I中，R1、R0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2-10的鏈烯基或氟取代的碳原子數為2-10的鏈烯基；其中R1、R0基團中任意一個或多個不相連的-CH2-任選被亞環丙基或亞環戊基替代；式II中，R2、R3各自獨立地表示碳原子數為1-10的鏈烷基或碳原子數為2-10的鏈烯基；
本發明的液晶組合物，優選地，前述式I所示化合物選自下述式I-1至I-15所示化合物組成的組，
本發明的液晶組合物，進一步優選地，前述式I所示化合物在液晶組合物中的質量含量為1-20%，進一步優選為8-10%。 The liquid crystal composition of the present invention is further preferably such that the mass content of the compound represented by the aforementioned formula I in the liquid crystal composition is 1-20%, and further preferably 8-10%.
本發明的液晶組合物，優選地，前述-CF2O-類△ε>10的化合物選自一種或多種式III所示的化合物，
本發明的液晶組合物，優選地，前述式III所示化合物選自下述式III-1至式III-所示化合物組成的組，
其中，R4表示碳原子數為1-10的鏈烷基，且R4所示基團中任意一個或多個不相連的-CH2-任選被亞環丙基或亞環戊基替代。 Wherein, R 4 represents a chain alkyl group having 1 to 10 carbon atoms, and any one or more unconnected -CH 2 - groups in the group represented by R 4 are optionally replaced by cyclopropylene or cyclopentyl.
本發明的液晶組合物，進一步優選地，前述式III所示化合物選自式III-4、III-8、III-13以及III-16所示化合物組成的組；更進一步優選地，包含III-4、III-13所示化合物。 The liquid crystal composition of the present invention is further preferably that the compound represented by the aforementioned formula III is selected from the group consisting of compounds represented by formula III-4, III-8, III-13 and III-16; and further preferably, it includes compounds represented by III-4 and III-13.
本發明的液晶組合物，優選地，前述液晶組合物還包含一種或多種式IV所示的化合物，
式IV中，R5表示碳原子數為1-10的鏈烷基或碳原子數為2-10的鏈烯基；R6表示碳原子數為1-10的鏈烷基、碳原子數為2-10的鏈烯基或碳原子數為1-10的鏈烷氧基；
本發明的液晶組合物，優選地，前述式IV所示化合物選自下述式IV-1至IV-13所示化合物組成的組，
本發明的液晶組合物，優選地，前述液晶組合物還包含一種或多種式V所示化合物，
式V中，R7表示碳原子數為1-10的鏈烷基；Y1表示-F、-CF3或-OCF3；X4、X5各自獨立地表示F或H；
本發明的液晶組合物，優選地，前述式V所示化合物選自下述式V-1至V-8所示化合物組成的組，
本發明的液晶組合物，進一步優選地，前述式V所示化合物選自下述式V-1、V-2、V-4、V-7所示化合物，在液晶組合物中的質量含量為0-41%；更進一步地，式V所示化合物包含式V-4所示化合物，在液晶組合物中的質量含量為0-20%。 The liquid crystal composition of the present invention is further preferably that the compound represented by the aforementioned formula V is selected from the compounds represented by the following formulas V-1, V-2, V-4, and V-7, and the mass content in the liquid crystal composition is 0-41%; further, the compound represented by formula V includes the compound represented by formula V-4, and the mass content in the liquid crystal composition is 0-20%.
本發明的液晶組合物，優選地，前述式II所述化合物選自式II-1和/或II-2所示化合物組成的組，
本發明的液晶組合物，進一步優選地，前述式II-1和/或II-2所示化合物在液晶組合物中的質量含量為0-80%，更進一步優選地，II-1和/或II-2所示化合物在液晶組合物中的質量含量為23-35%。 The liquid crystal composition of the present invention is further preferably such that the mass content of the compound represented by the aforementioned formula II-1 and/or II-2 in the liquid crystal composition is 0-80%, and further preferably, the mass content of the compound represented by II-1 and/or II-2 in the liquid crystal composition is 23-35%.
本發明的液晶組合物，優選地，前述液晶組合物還包含一種或多種式VI所示的化合物，
式VI中，
R8、R9各自獨立地表示碳原子數為1-10的鏈烷基、碳原子數為1-10的鏈烷氧基、碳原子數為2-10的鏈烯基或碳原子數為1-8的鏈烯氧基；
本發明的液晶組合物，優選地，前述式VI所示化合物選自下述式VI-1至VI-7所示化合物組成的組，
其中，R8、R9各自獨立地表示碳原子數為1-10的鏈烷基、碳原子數為1-10的鏈烷氧基、碳原子數為2-10的鏈烯基或碳原子數為1-8的鏈烯氧基。 Here, R 8 and R 9 each independently represent 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 alkenyloxy group having 1 to 8 carbon atoms.
本發明的液晶組合物，進一步優選地，前述式VI所示化合物包含式VI-3和/或VI-7所示化合物，在液晶組合物中的質量含量為1-20%，進一步優選地，質量含量為5-7%。 The liquid crystal composition of the present invention is further preferably that the compound represented by the aforementioned formula VI contains the compound represented by formula VI-3 and/or VI-7, and the mass content in the liquid crystal composition is 1-20%, and further preferably, the mass content is 5-7%.
本發明的液晶組合物，優選地，前述液晶組合物包含一種或多種式VII所示的化合物，
式VII中，Rc表示碳原子數為1-10的鏈烷基；Rd表示-CF3或-OCF3。 In Formula VII, Rc represents a chain alkyl group having 1 to 10 carbon atoms; and Rd represents -CF 3 or -OCF 3 .
本發明的液晶組合物，進一步優選地，前述式VII所示化合物在液晶組合物中的質量含量為0-20%。 The liquid crystal composition of the present invention is further preferably such that the mass content of the compound represented by the aforementioned formula VII in the liquid crystal composition is 0-20%.
本發明的液晶組合物，優選地，前述液晶組合物包含一種或多種式VIII所示的化合物，
式VIII中，Ra、Rb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的鏈烷氧基、氟取代的碳原子數為1-10的鏈烷氧基、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；X表示O或S。 In formula VIII, Ra and Rb each independently represent an alkyl group having 1-10 carbon atoms, an alkyl group having 1-10 carbon atoms substituted with fluorine, an alkoxy group having 1-10 carbon atoms, an alkoxy group having 1-10 carbon atoms substituted with fluorine, an alkenyl group having 2-10 carbon atoms, an alkenyl group having 2-10 carbon atoms substituted with fluorine, an alkenyloxy group having 3-8 carbon atoms, or an alkenyloxy group having 3-8 carbon atoms substituted with fluorine; X represents O or S.
本發明的液晶組合物，優選地，還包含一種或多種式IX所示的化合物：
式IX中，Rf表示碳原子數為1-10的鏈烷基，且Rf所示基團中任意一個或多個不相連的-CH2-任選被亞環戊基、亞環丁基或亞環丙基取代。 In formula IX, Rf represents a chain alkyl group having 1 to 10 carbon atoms, and any one or more unconnected -CH 2 - groups in the group represented by Rf are optionally substituted by cyclopentylene, cyclobutylene or cyclopropylene.
前述液晶組合物中，按質量百分含量計，式IX所示的化合物在液晶組合物中的含量為0.1~2%，優選為0.1~1%。 In the aforementioned liquid crystal composition, the content of the compound represented by formula IX in the liquid crystal composition is 0.1-2% by mass, preferably 0.1-1%.
優選地，前述式IX所示化合物選自式IX-1至式IX-5所示化合物組成的組：
前述的碳原子數為1-10的鏈烷基，可以列舉出，例如，甲基、乙基、正丙基、異丙基、正丁基、異丁基、叔丁基、正戊基、異戊基、己基、庚基、辛基、壬基、癸基等。 The aforementioned alkyl group with 1 to 10 carbon atoms can be listed, for example, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, hexyl, heptyl, octyl, nonyl, decyl, etc.
前述的碳原子數為1-10的鏈烷氧基，可以列舉出例如，甲氧基、乙氧基、正丙氧基、異丙氧基、正丁氧基、異丁氧基、戊氧基、己氧基、庚氧基、辛氧基、壬氧基、癸氧基等。 The aforementioned chain alkoxy group having 1 to 10 carbon atoms may include, for example, methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, isobutoxy, pentyloxy, hexyloxy, heptyloxy, octyloxy, nonyloxy, decyloxy, etc.
前述碳原子數為2-10的鏈烯基，可以列舉出，例如，乙烯基、1-丙烯基、1-丁烯基、2-丁烯基、3-丁烯基、1-戊烯基、2-戊烯基、3-戊烯基、4-戊烯基、1-己烯基、2-己烯基、3-己烯基等。 The aforementioned alkenyl group having 2 to 10 carbon atoms may be exemplified by vinyl, 1-propenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 4-pentenyl, 1-hexenyl, 2-hexenyl, 3-hexenyl, etc.
前述的碳原子數為1-10的鏈烷基中一個或多個不相鄰的-CH2-被亞環丙基、亞環丁基或亞環戊基取代後得到的基團，可以列舉出，例如環丙基、環丁基、環戊基、甲基亞環丙基、乙基亞環丙基、丙基亞環丙基、異丙基亞環丙基、正丁基亞環丙基、異丁基亞環丙基、叔丁基亞環丙基、甲基亞環丁基、乙基亞環丁基、丙基亞環丁基、異丙基亞環丁基、正丁基亞環丁基、異丁基亞環丁基、叔丁基亞環丁基、甲基亞環戊基、乙基亞環戊基、丙基亞環戊基、異丙基亞環戊基、正丁基亞環戊基、異丁基亞環戊基等。 The groups obtained by replacing one or more non-adjacent -CH2- groups in the aforementioned alkyl groups having 1 to 10 carbon atoms with cyclopropylene, cyclobutylene or cyclopentylene include, for example, cyclopropylene, cyclobutylene, cyclopentylene, methylcyclopropylene, ethylcyclopropylene, propylcyclopropylene, isopropylcyclopropylene, n-butylcyclopropylene, isobutylcyclopropylene, tert-butylcyclopropylene, methylcyclobutylene, ethylcyclobutylene, propylcyclobutylene, isopropylcyclobutylene, n-butylcyclobutylene, isobutylcyclobutylene, tert-butylcyclobutylene, methylcyclopentylene, ethylcyclopentylene, propylcyclopentylene, isopropylcyclopentylene, n-butylcyclopentylene, isobutylcyclopentylene and the like.
本發明的液晶化合物中還可以加入各種功能的摻雜劑，摻雜劑含量優選0.01~1%之間，這些摻雜劑可以列舉出，例如抗氧化劑、紫外線吸收劑、手性劑。 Various functional dopants may also be added to the liquid crystal compound of the present invention, and the dopant content is preferably between 0.01 and 1%. These dopants may include, for example, antioxidants, ultraviolet absorbers, and chiral agents.
抗氧化劑可以列舉出，
其中，t表示1-10的整數。 Among them, t represents an integer from 1 to 10.
紫外線吸收劑可以列舉出，
手性劑(左旋或右旋)優選可以列舉出例如：
[液晶顯示元件或液晶顯示器] [Liquid crystal display element or liquid crystal display]
為達到上述另一個目的，本發明提供如下技術方案：一種液晶顯示元件或液晶顯示器，其包含本發明的液晶組合物，所述液晶顯示元件或液晶顯示器為主動矩陣顯示元件或顯示器。 To achieve the above-mentioned other purpose, the present invention provides the following technical solution: a liquid crystal display element or liquid crystal display, which comprises the liquid crystal composition of the present invention, and the liquid crystal display element or liquid crystal display is an active matrix display element or display.
本發明的另一個目的在於提供一種液晶顯示元件或液晶顯示器，其包含本發明的液晶組合物，所述液晶顯示元件或液晶顯示器為主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, which comprises the liquid crystal composition of the present invention, wherein the liquid crystal display element or liquid crystal display is an active matrix display element or display.
本發明中液晶組合物為正介電各向異性液晶組合物，適用於TN，FFS，IPS等顯示模式，尤其適用於邊緣場顯示模式。 The liquid crystal composition in the present invention is a positive dielectric anisotropy liquid crystal composition, which is suitable for display modes such as TN, FFS, IPS, etc., especially for edge field display mode.
對於本發明的液晶顯示元件、液晶顯示器，只要含有本發明的液晶組合物，則對其結構沒有任何限定，本領域技術人員能夠根據所需的性能選擇合適的液晶顯示元件、液晶顯示器的結構。 As long as the liquid crystal display element and liquid crystal display of the present invention contain the liquid crystal composition of the present invention, there is no limitation on their structure. Those skilled in the art can select the appropriate structure of the liquid crystal display element and liquid crystal display according to the required performance.
實施例 Implementation example
為了更清楚地說明本發明，下面結合實施例對本發明做進一步的說明。本領域技術人員應當理解，下面所具體描述的內容是說明性的而非限制性的，不應以此限制本發明的保護範圍。 In order to explain the present invention more clearly, the present invention is further described below in combination with the embodiments. Those skilled in the art should understand that the content described below is illustrative rather than restrictive, and should not be used to limit the scope of protection of the present invention.
本說明書中，如無特殊說明，百分比均是指質量百分比，溫度為攝氏度(℃)，其他符號的具體意義及測試條件如下：△ε表示介電各向異性，△ε=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微米反平行盒，INSTEC：ALCT-CUST-4C測試；K11為展曲彈性常數，K33為彎曲彈性常數，測試條件為：25±2℃、INSTEC：ALCT-CUST-4C、20微米平行盒；Flexo用V100的flicker表示，測試條件為25±0.5℃，FFS測試盒，測試設備用DMS-501，單位用dB表示，數值越小表示撓曲效果越好，Flicker閃爍越小，殘像越好；殘像：液晶顯示器件的殘像，是在顯示區域內使規定的固定圖案顯示1000小時後，通過目測對進行全畫面均勻顯示時的固有圖案的殘留水準進行以下的4等級評價： In this manual, unless otherwise specified, percentages refer to mass percentages, temperatures are in degrees Celsius (℃), and the specific meanings of other symbols and test conditions are as follows: △ε represents dielectric anisotropy, △ε=ε ∥ -ε ⊥ , where ε ∥ is the dielectric constant parallel to the molecular axis, and ε ⊥ is the dielectric constant perpendicular to the molecular axis. The test conditions are 25±0.5℃, 20 micron antiparallel box, INSTEC: ALCT-CUST-4C test; K 11 is the splay elastic constant, K 33 is the bending elastic constant, the test conditions are: 25±2℃, INSTEC: ALCT-CUST-4C, 20 micron parallel box; Flexo is represented by V100 flicker, the test conditions are 25±0.5℃, FFS test box, the test equipment is DMS-501, the unit is dB, the smaller the value, the better the bending effect, the smaller the flicker, the better the afterimage; Afterimage: The afterimage of the liquid crystal display device is to make the specified fixed pattern display in the display area for 1000 hours, and then visually inspect the residual level of the inherent pattern when the full screen is evenly displayed, and the following 4 levels are evaluated:
◎無殘留 ◎No residue left
○有極少量殘留，為可以容許的水準 ○There is a very small amount of residue, which is an acceptable level
△有殘留，為不能允許的水準 △There are residues, which is an unacceptable level
×有殘留，相當差。 ×There are some residues, quite bad.
液晶組合物的製備方法如下：將各液晶單體按照一定配比稱量後放入不銹鋼燒杯中，將裝有各液晶單體的不銹鋼燒杯置於磁力攪拌儀器上加熱融化，待不銹鋼燒杯中的液晶單體大部份融化後，往不銹鋼燒杯中加入磁力轉子，將混合物攪拌均勻，冷卻到室溫後即得液晶組合物。 The preparation method of the liquid crystal composition is as follows: weigh each liquid crystal monomer according to a certain ratio and put it into a stainless steel beaker, place the stainless steel beaker containing each liquid crystal monomer on a magnetic stirrer to heat and melt, and after most of the liquid crystal monomers in the stainless steel beaker are melted, add a magnetic rotor to the stainless steel beaker, stir the mixture evenly, and cool it to room temperature to obtain the liquid crystal composition.
本發明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1、表2。 The liquid crystal monomer structure of the embodiment of the present invention is represented by a code, and the code representation method of the liquid crystal ring structure, end group, and connecting group is shown in Table 1 and Table 2 below.
舉例：
實施例1 Implementation Example 1
液晶組合物的配方及相應的性能如下表3所示。 The formula of the liquid crystal composition and its corresponding properties are shown in Table 3 below.
實施例2 Example 2
液晶組合物的配方及相應的性能如下表4所示。 The formula of the liquid crystal composition and its corresponding properties are shown in Table 4 below.
實施例3 Example 3
液晶組合物的配方及相應的性能如下表5所示。 The formula of the liquid crystal composition and its corresponding properties are shown in Table 5 below.
實施例4 Example 4
液晶組合物的配方及相應的性能如下表6所示。 The formula of the liquid crystal composition and its corresponding properties are shown in Table 6 below.
實施例5 Example 5
液晶組合物的配方及相應的性能如下表7所示。 The formula of the liquid crystal composition and its corresponding properties are shown in Table 7 below.
實施例6 Example 6
液晶組合物的配方及相應的性能如下表8所示。 The formula of the liquid crystal composition and its corresponding properties are shown in Table 8 below.
實施例7 Example 7
液晶組合物的配方及相應的性能如下表9所示。 The formula of the liquid crystal composition and its corresponding properties are shown in Table 9 below.
實施例8 Example 8
液晶組合物的配方及相應的性能如下表10所示。 The formula of the liquid crystal composition and its corresponding properties are shown in Table 10 below.
實施例9 Example 9
液晶組合物的配方及相應的性能如下表11所示。 The formula of the liquid crystal composition and its corresponding properties are shown in Table 11 below.
實施例10 Example 10
液晶組合物的配方及相應的性能如下表12所示。 The formula of the liquid crystal composition and its corresponding properties are shown in Table 12 below.
實施例11 Example 11
液晶組合物的配方及相應的性能如下表13所示。 The formula of the liquid crystal composition and its corresponding properties are shown in Table 13 below.
對比例1 Comparative Example 1
液晶組合物的配方及相應的性能如下表14所示。 The formula of the liquid crystal composition and its corresponding properties are shown in Table 14 below.
對比例2 Comparative Example 2
液晶組合物的配方及相應的性能如下表15所示。 The formula of the liquid crystal composition and its corresponding properties are shown in Table 15 below.
對比例1和對比例2均為實施例1的對比例，與實施例1相比，雖然對比例1和對比例2的技術方案也能調整到與本發明相當的介電和彈性常數，但是對比例1和對比例2的flicker@V100(db)比較差，撓曲電差，殘像不好，對比例2的ε⊥/△ε比較差，透過率比較低。 Comparative Examples 1 and 2 are both comparative examples of Example 1. Compared with Example 1, although the technical solutions of Comparative Examples 1 and 2 can also be adjusted to dielectric and elastic constants equivalent to those of the present invention, the flicker@V100 (db) of Comparative Examples 1 and 2 are relatively poor, the flexure current is poor, and the afterimage is not good. The ε ⊥ /△ε of Comparative Example 2 is relatively poor, and the transmittance is relatively low.
因此，本發明的液晶組合物，具有彈性常數大，垂直介電比介電比值大，撓曲電好的優勢，可以用於開發透過率高、回應快、對比度高、功耗低以及flicker優的等的液晶顯示元器件，尤其適用於工控、筆記本、TV等需要透過率高或者殘像品質高的產品。 Therefore, the liquid crystal composition of the present invention has the advantages of large elastic constant, large vertical dielectric ratio, and good flexure current, and can be used to develop liquid crystal display components with high transmittance, fast response, high contrast, low power consumption, and excellent flicker, especially suitable for industrial control, notebooks, TVs and other products that require high transmittance or high afterimage quality.
本發明的上述實施例僅僅是為清楚地說明本發明所作的舉例，而並非是對本發明的實施方式的限定，對於所屬領域的普通技術人員來說，在上述說明的基礎上還可以做出其它不同形式的變化或變動，這裡無法對所有的實施方式予以窮舉，凡是屬於本發明的技術方案所引伸出的顯而易見的變化或變動仍處於本發明的保護範圍之列。 The above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.
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| TW201708201A (en) * | 2015-04-13 | 2017-03-01 | 馬克專利公司 | Fluorinated dibenzofuran and dibenzothiophene derivatives |
| TW201817855A (en) * | 2016-11-02 | 2018-05-16 | 石家莊誠志永華顯示材料有限公司 | Highly vertical dielectric liquid crystal compound, liquid crystal composition, and liquid crystal display device having a good stability against light and heat, a lower viscosity, a positive or negative dielectricity, a wider refractive index that may be achieved by adjusting the monomer ratio, and a higher clearing point |
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| TW201708201A (en) * | 2015-04-13 | 2017-03-01 | 馬克專利公司 | Fluorinated dibenzofuran and dibenzothiophene derivatives |
| TW201817855A (en) * | 2016-11-02 | 2018-05-16 | 石家莊誠志永華顯示材料有限公司 | Highly vertical dielectric liquid crystal compound, liquid crystal composition, and liquid crystal display device having a good stability against light and heat, a lower viscosity, a positive or negative dielectricity, a wider refractive index that may be achieved by adjusting the monomer ratio, and a higher clearing point |
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