TW201816096A - Liquid crystal composition - Google Patents
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本發明涉及液晶材料領域，具體涉及一種液晶組合物及其應用。The invention relates to the field of liquid crystal materials, in particular to a liquid crystal composition and application thereof.
液晶顯示元件根據顯示方式分為下列模式：扭曲向列相（TN）模式、超扭曲向列相（STN）模式、面內轉向模式（IPS）、垂直配向（VA）模式。無論何種顯示模式均需要液晶組合物有以下特性。The liquid crystal display element is divided into the following modes according to the display mode: twisted nematic phase (TN) mode, super twisted nematic phase (STN) mode, in-plane steering mode (IPS), and vertical alignment (VA) mode. Regardless of the display mode, the following characteristics are required for the liquid crystal composition.
（1）化學，物理性質穩定。(1) Chemical and physical properties are stable.
（2）黏度低。(2) Low viscosity.
（3）具有合適的△ε。(3) Have appropriate Δε.
（4）合適的折射率△n。(4) Appropriate refractive index Δn.
（5）與其他液晶化合物的相溶性好(5) Good compatibility with other liquid crystal compounds
隨著九十年代初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，TFT-LCD迅速成長為主流顯示器，這與它具有的優點是分不開的。其優點主要分為5點：With the maturity of TFT technology in the early 1990s, color liquid crystal flat panel displays developed rapidly. In less than 10 years, TFT-LCDs have rapidly grown into mainstream displays, which is inseparable from its advantages. Its advantages are mainly divided into 5 points:
一、使用特性好。低壓應用，低驅動電壓；平板化，又輕薄，節省了大量原材料和使用空間；低功耗；顯示品質從最簡單的單色字元圖形到高解析度，高彩色保真度，高亮度，高對比，高響應速度的各種規格型號的視頻顯示器；其顯示方式有直視型，投影型，透視式和反射式等多種顯示方式。First, the use characteristics are good. Low voltage applications, low driving voltage; flat, thin and light, saving a lot of raw materials and use space; low power consumption; display quality from the simplest monochrome character graphics to high resolution, high color fidelity, high brightness, High-contrast, high-response video monitors of various specifications; its display modes include direct-view type, projection type, perspective type and reflective type.
二、環保特性好。TFT-LCD無輻射、無閃爍，對使用者的健康無損害，特別是TFT-LCD電子書刊的出現，將把人類帶入無紙辦公、無紙印刷時代，引發人類學習、傳播和記載文明方式的革命。Second, environmental protection characteristics are good. TFT-LCD has no radiation, no flicker, and has no harm to users' health. Especially the emergence of TFT-LCD electronic books and periodicals will bring humans into the era of paperless office and paperless printing, which will trigger humanity to learn, spread and record civilization. Revolution.
三、適用範圍寬：從-20℃到50℃的溫度範圍內都可以正常使用，經過溫度加固處理的TFT-LCD低溫工作溫度可達到零下80℃。既可作為移動終端顯示，臺式終端顯示，又可以作大螢幕投影電視，是性能優良的全尺寸視頻顯示終端。3. Wide application range: It can be used normally in the temperature range from -20 ℃ to 50 ℃. The low-temperature operating temperature of TFT-LCD after temperature strengthening can reach minus 80 ℃. It can be used as a mobile terminal display, a desktop terminal display, or a large-screen projection TV. It is a full-size video display terminal with excellent performance.
四、製造技術的自動化程度高。Fourth, the degree of automation of manufacturing technology is high.
五、TFT-LCD易於集成化和更新換代。5. TFT-LCD is easy to integrate and upgrade.
由上所述液晶平板顯示器的主要特點，因此對液晶平板顯示器所用的液晶材料品質特性也提出了更高的要求，液晶組合物本身應具有高電荷保持率、高電阻率、低離子濃度、低功耗、低旋轉黏度。From the main characteristics of the above-mentioned liquid crystal flat panel displays, higher requirements are also placed on the quality characteristics of liquid crystal materials used in liquid crystal flat panel displays. The liquid crystal composition itself should have high charge retention, high resistivity, low ion concentration, and low Power consumption, low rotational viscosity.
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，還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。As a liquid crystal material, it is necessary to have good chemical and thermal stability and stability to electric fields and electromagnetic radiation. As a liquid crystal material for thin film transistor technology (TFT-LCD), it should not only have the above stability, but also have a wide nematic phase temperature range, suitable birefringence anisotropy, very high resistivity, Good UV resistance, high charge retention and low vapor pressure.
對於薄膜電晶體技術（TFT-LCD）應用領域，近年來市場雖然已經非常巨大，技術也逐漸成熟，於此同時，由於液晶材料技術的不斷進步，人們對顯示技術的要求也在不斷的提高，尤其是在實現快速響應，降低驅動電壓以降低功耗等方面。Regarding the application field of thin film transistor technology (TFT-LCD), although the market has been huge in recent years, the technology has gradually matured. At the same time, due to the continuous advancement of liquid crystal material technology, people's requirements for display technology have been continuously improved. Especially in terms of achieving fast response and reducing driving voltage to reduce power consumption.
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。目前很多顯示器需要更高的解析度滿足人們對於高解析度的要求，基於此，面板廠家不斷的改善自己的電極設計，以期提升開口率，但是這樣做，會導致電場強度弱，顯示對比度不高，液晶錨定能力差，以及殘像風險提升，為了降低面板廠家對電極改善的頻率，同時為了滿足高穿透率的需求，本發明使用了一種混合結構的高介電單體，此種單體的特點在於分子光軸與長軸方向有一定的夾角，可以實現快速響應同時在透光部分可以提供更多的有效延遲兩，提升普通面板的透過率，同時提升響應的對比度，讓面板廠家在不用變更任何生產條件的情況下， 改善透過率，加快響應時間，提升面板品質。Liquid crystal materials, as one of the important optoelectronic materials for liquid crystal displays, play an important role in improving the performance of liquid crystal displays. At present, many displays require higher resolution to meet people's requirements for high resolution. Based on this, panel manufacturers continue to improve their electrode designs in order to increase the aperture ratio. However, this will result in weak electric field strength and poor display contrast. In order to reduce the frequency of improvement of electrodes by panel manufacturers and the need for high penetration, the present invention uses a high-dielectric monomer with a mixed structure. The characteristic of the body is that the molecular optical axis has a certain angle with the long axis direction, which can achieve fast response and provide more effective delay in the light-transmitting part. It can improve the transmittance of ordinary panels and increase the contrast of the response, allowing panel manufacturers Without changing any production conditions, improve transmittance, speed up response time, and improve panel quality.
本發明需要解決的技術問題是提供一種正介電性液晶組合物，通過特性的單體組合，達到透過率的提升並且提高對比，加快響應時間，同時改善整體的信賴性水準。The technical problem to be solved by the present invention is to provide a positive dielectric liquid crystal composition. Through the combination of characteristics of the monomers, the transmittance can be improved, the contrast can be improved, the response time can be improved, and the overall reliability level can be improved.
為了解決以上技術問題，本發明提供了一種液晶組合物，其特徵在於：所述液晶組合物包含一種或多種式I所示化合物、一種或多種式II所示化合物以及一種或多種式III所示化合物，IIIIII 其中， R1 、R2 、R3 、R4 各自獨立地表示下列①、②、③所示基團中的任一基團， ①H、Cl、F、CN、OCN、SCN、NCS、SF5 ， ②碳原子數為1~10的直鏈烷基、氟取代的碳原子數為1~10的直鏈烷基、氯取代的碳原子數為1~10的直鏈烷基、碳原子數為1~10的直鏈烷氧基、氟取代的碳原子數為1~10的直鏈烷氧基、氯取代的碳原子數為1~10的直鏈烷氧基， ③所述②所示基團中至少一個-CH2 -被-CH=CH-、-C≡C-、-COO-、-OOC-、-O-或碳原子數為3~6的環烷基中任一基團取代而得的基團； 環、、、、、各自獨立地表示、、、、、、、、及/或基團中的一種或兩種； X1 、X2 各自獨立地表示H或F； Y1 表示下列④、⑤、⑥所示基團中的任一基團， ④H、F、Cl； ⑤碳原子數為1~6的直鏈烷基、碳原子數為1~6的直鏈烷氧基、碳原子數為2~6的直鏈烯氧基； ⑥將上述⑤中任意一個或多個H被F取代而得的基團； n、m、e各自獨立地表示1或2； （F）表示H或F； Z表示單鍵、-CH2 -CH2 -、-(CH2 )4 -、-CH=CH-、-C≡C-、-COO-、-OOC-、-CF2 O-、-OCH2 -、-CH2 O-、-OCF2 -、-CF2 CH2 -、-CH2 CF2 -、-C2 F4 -或-CF＝CF-。In order to solve the above technical problems, the present invention provides a liquid crystal composition, characterized in that the liquid crystal composition includes one or more compounds represented by Formula I, one or more compounds represented by Formula II, and one or more compounds represented by Formula III Compounds, I II III wherein R 1 , R 2 , R 3 , and R 4 each independently represent any one of the groups shown in the following ①, ②, and ③, ① H, Cl, F, CN, OCN, SCN, NCS, SF 5 , ② Straight-chain alkyl groups having 1 to 10 carbon atoms, fluoro-substituted straight chain alkyl groups having 1 to 10 carbon atoms, chloro-substituted straight chain alkyl groups having 1 to 10 carbon atoms, carbon atoms A linear alkoxy group having 1 to 10, a linear alkoxy group having 1 to 10 carbon atoms substituted with fluorine, and a linear alkoxy group having 1 to 10 carbon atoms substituted with chlorine, ③ said ② At least one of the groups shown is -CH 2 -by -CH = CH-, -C≡C-, -COO-, -OOC-, -O- or any cycloalkyl group having 3 to 6 carbon atoms A group obtained by substituting a group; a ring , , , , , Each independently , , , , , , , , And / or One or two of the groups; X 1 and X 2 each independently represent H or F; Y 1 represents any one of the groups shown in the following ④, ⑤, ⑥, ④ H, F, Cl; ⑤ carbon A straight-chain alkyl group having 1 to 6 atoms, a straight-chain alkoxy group having 1 to 6 carbon atoms, and a straight-chain alkenyl group having 2 to 6 carbon atoms; ⑥ Any one or more of the above ⑤ H is substituted by F; n, m, and e each independently represent 1 or 2; (F) represents H or F; Z represents a single bond, -CH 2 -CH 2 -,-(CH 2 ) 4 -, -CH = CH-, -C≡C-, -COO-, -OOC-, -CF 2 O-, -OCH 2- , -CH 2 O-, -OCF 2- , -CF 2 CH 2- , -CH 2 CF 2- , -C 2 F 4- , or -CF = CF-.
所述液晶組合物中，所述一種或多種式I所示化合物的總重量百分含量較佳地為1~40%，所述一種或多種式II所示化合物的總重量百分含量較佳地為1~70%，所述一種或多種式III所示化合物的總重量百分含量較佳地為1~50%。In the liquid crystal composition, the total weight percentage content of the one or more compounds represented by Formula I is preferably 1 to 40%, and the total weight percentage content of the one or more compounds represented by Formula II is preferably The ground content is 1 to 70%, and the total weight percentage content of the one or more compounds represented by formula III is preferably 1 to 50%.
所述液晶組合物中還可以添加重量百分含量為0.001~0.5%的光性組分、抗氧化劑或UV穩定劑。The liquid crystal composition may further include a light component, an antioxidant, or a UV stabilizer with a content of 0.001 to 0.5% by weight.
所述一種或多種式I所示化合物較佳地為下列式I-1至式I-4所示化合物中的一種或多種，I-1I-2I-3I-4 其中 R1 各自獨立地表示下列①、②、③所示基團中的任一基團， ①H、Cl、F、CN、OCN、SCN、NCS、SF5 ， ②碳原子數為1~10的直鏈烷基、氟取代的碳原子數為1~10的直鏈烷基、氯取代的碳原子數為1~10的直鏈烷基、碳原子數為1~10的直鏈烷氧基、氟取代的碳原子數為1~10的直鏈烷氧基、氯取代的碳原子數為1~10的直鏈烷氧基， ③所述②所示基團中至少一個-CH2 -被-CH=CH-、-C≡C-、-COO-、-OOC-、-O-或碳原子數為3~6的環烷基中任一基團取代而得的基團； （F）各自獨立地表示H或F； n各自獨立地表示0、1或2。The one or more compounds represented by Formula I are preferably one or more of the compounds represented by Formula I-1 to Formula I-4 below, I-1 I-2 I-3 I-4 wherein R 1 each independently represents any one of the following groups ①, ②, ③, ① H, Cl, F, CN, OCN, SCN, NCS, SF 5 , ② the number of carbon atoms is 1 ~ 10 linear alkyl, fluorine-substituted linear alkyl having 1 to 10 carbon atoms, chlorine-substituted linear alkyl having 1 to 10 carbon atoms, and linear 1 to 10 carbon atoms Alkoxy, fluorine-substituted linear alkoxy having 1 to 10 carbon atoms, chlorine-substituted linear alkoxy having 1 to 10 carbon atoms, ③ at least one of the groups shown in ② above- CH 2 -a group substituted by -CH = CH-, -C≡C-, -COO-, -OOC-, -O-, or any of the cycloalkyl groups having 3 to 6 carbon atoms (F) each independently represents H or F; n each independently represents 0, 1 or 2.
所述一種或多種式I所示化合物更佳地為下列所示化合物中的一種或多種，Ⅰ-1-1Ⅰ-2-1Ⅰ-3-1Ⅰ-4-1Ⅰ-1-4Ⅰ-2-4Ⅰ-3-4Ⅰ-4-4Ⅰ-4-5Ⅰ-1-6Ⅰ-2-6Ⅰ-3-6Ⅰ-4-6 其中， R1 各自獨立地表示下列①、②、③所示基團中的任一基團， ①H、Cl、F、CN、OCN、SCN、NCS、SF5 ； ②碳原子數為1~10的直鏈烷基、氟取代的碳原子數為1~10的直鏈烷基、氯取代的碳原子數為1~10的直鏈烷基、碳原子數為1~10的直鏈烷氧基、氟取代的碳原子數為1~10的直鏈烷氧基、氯取代的碳原子數為1~10的直鏈烷氧基； ③所述②所示基團中至少一個-CH2 -被-CH=CH-、-C≡C-、-COO-、-OOC-、-O-或碳原子數為3~6的環烷基中任一基團取代而得的基團。 所述一種或多種式Ⅱ所示化合物較佳地為下列式Ⅱ-1至式Ⅱ-13所示的化合物中的一種或多種，Ⅱ-1Ⅱ-2Ⅱ-3Ⅱ-4Ⅱ-5，Ⅱ-6Ⅱ-7Ⅱ-8Ⅱ-9Ⅱ-10Ⅱ-11Ⅱ-12Ⅱ-13 其中 R2 、R3 各自獨立地表示H、碳原子數為1~10的直鏈烷基、碳原子數為1~10的直鏈烷氧基、碳原子為2~10的直鏈烯基或者碳原子為3~8直鏈烯氧基，其中的任意H可被F取代； （F）各自獨立地表示H或F。 所述一種或多種式Ⅱ所示化合物更佳地為下為式Ⅱ-a-1至式Ⅱ-i-3所示的化合物中的一種或多種，Ⅱ-a-1，Ⅱ-a-2，Ⅱ-b-1，Ⅱ-b-2，Ⅱ-c-1，Ⅱ-c-2，Ⅱ-c-3，Ⅱ-c-4，Ⅱ-d-1，Ⅱ-d-2，Ⅱ-d-3，Ⅱ-e-1，Ⅱ-e-2，Ⅱ-e-3，Ⅱ-f-1，Ⅱ-f-2，Ⅱ-f-3，Ⅱ-g-1，Ⅱ-g-2，Ⅱ-g-3，Ⅱ-g-4，Ⅱ-g-5，Ⅱ-h-1，Ⅱ-h-2，Ⅱ-i-1，Ⅱ-i-2，Ⅱ-i-3。The one or more compounds represented by formula I are more preferably one or more of the compounds shown below Ⅰ-1-1 Ⅰ-2-1 Ⅰ-3-1 Ⅰ-4-1 Ⅰ-1-4 Ⅰ-2-4 Ⅰ-3-4 I-4-4 I-4-5 Ⅰ-1-6 I-2-6 I-3-6 I-4-6 wherein R 1 each independently represents any of the following groups ①, ②, ③, ① H, Cl, F, CN, OCN, SCN, NCS, SF 5 ; ② carbon atom 1 to 10 linear alkyl groups, fluorine-substituted linear alkyl groups having 1 to 10 carbon atoms, chlorine-substituted linear alkyl groups having 1 to 10 carbon atoms, and 1 to 10 carbon atoms A linear alkoxy group, a fluorine-substituted linear alkoxy group having 1 to 10 carbon atoms, and a chlorine-substituted linear alkoxy group having 1 to 10 carbon atoms; At least one -CH 2 -is substituted by -CH = CH-, -C≡C-, -COO-, -OOC-, -O-, or any cycloalkyl group having 3 to 6 carbon atoms Group. The one or more compounds represented by the formula II are preferably one or more of the compounds represented by the following formulae II-1 to II-13, Ⅱ-1 Ⅱ-2 Ⅱ-3 Ⅱ-4 Ⅱ-5, Ⅱ-6 Ⅱ-7 Ⅱ-8 Ⅱ-9 Ⅱ-10 II-11 Ⅱ-12 Ⅱ-13 wherein R 2 and R 3 each independently represent H, a straight-chain alkyl group having 1 to 10 carbon atoms, a straight-chain alkoxy group having 1 to 10 carbon atoms, and a straight-chain alkyl group having 2 to 10 carbon atoms An alkenyl group or a carbon atom having 3 to 8 straight alkenyloxy groups, in which any H may be substituted by F; (F) each independently represents H or F. The one or more compounds represented by Formula II are more preferably one or more of the compounds represented by Formula II-a-1 to Formula II-i-3, Ⅱ-a-1, Ⅱ-a-2, Ⅱ-b-1, Ⅱ-b-2, Ⅱ-c-1, Ⅱ-c-2, Ⅱ-c-3, Ⅱ-c-4, Ⅱ-d-1, Ⅱ-d-2, Ⅱ-d-3, Ⅱ-e-1, Ⅱ-e-2, Ⅱ-e-3, Ⅱ-f-1, Ⅱ-f-2, Ⅱ-f-3, Ⅱ-g-1, Ⅱ-g-2, Ⅱ-g-3, Ⅱ-g-4, Ⅱ-g-5, Ⅱ-h-1, Ⅱ-h-2, Ⅱ-i-1, Ⅱ-i-2, Ⅱ-i-3.
所述一種或多種式Ⅲ所示化合物較佳地為下列式Ⅲ-1至式Ⅲ-29所示的化合物中的一種或多種，Ⅲ-1Ⅲ-2Ⅲ-3Ⅲ-4Ⅲ-5Ⅲ-6Ⅲ-7Ⅲ-8Ⅲ-9Ⅲ-10Ⅲ-11Ⅲ-12Ⅲ-13Ⅲ-14Ⅲ-15Ⅲ-16Ⅲ-17Ⅲ-18Ⅲ-19Ⅲ-20Ⅲ-21Ⅲ-22Ⅲ-23Ⅲ-24Ⅲ-25Ⅲ-26Ⅲ-27Ⅲ-28Ⅲ-29 其中 R4 各自獨立地表示碳原子數為1~10的直鏈烷基、碳原子數為1~10的直鏈烷氧基或碳原子數為2~10的直鏈烯基； Y1 各自獨立地表示F、碳原子數為1~6的直鏈烷基、碳原子數為1~6的直鏈烷氧基或碳原子數為2~6的直鏈烯基，其中任意一個或多個H可被F取代； （F）各自獨立地表示H或F。 所述一種或多種式Ⅲ所示化合物更佳地為下列所示的化合物中的一種或多種，Ⅲ-tⅢ-sⅢ-uⅢ-vⅢ-a-1Ⅲ-a-2Ⅲ-a-3Ⅲ-a-4Ⅲ-a-5Ⅲ-a-6Ⅲ-a-7Ⅲ-a-8Ⅲ-a-9Ⅲ-b-1Ⅲ-b-2Ⅲ-b-3Ⅲ-c-1Ⅲ-c-2Ⅲ-c-3Ⅲ-d-1Ⅲ-d-2Ⅲ-d-3Ⅲ-d-4Ⅲ-e-1Ⅲ-e-2Ⅲ-e-3Ⅲ-e-4Ⅲ-f-1Ⅲ-f-2Ⅲ-f-3Ⅲ-f-4Ⅲ-g-1Ⅲ-g-2Ⅲ-g-3Ⅲ-g-4Ⅲ-h-1Ⅲ-h-2Ⅲ-h-3Ⅲ-i-1Ⅲ-i-2Ⅲ-i-3Ⅲ-j-1Ⅲ-j-2Ⅲ-j-3Ⅲ-k-1Ⅲ-l-1Ⅲ-m-1Ⅲ-n-1Ⅲ-o-1Ⅲ-p-1Ⅲ-q-1Ⅲ-r-1Ⅲ-r-2Ⅲ-r-3Ⅲ-r-4Ⅲ-s-1Ⅲ-t-1Ⅲ-u-1 其中， R4 選自碳原子數為1~10的直鏈烷基、碳原子數為1~10的直鏈烷氧基或碳原子數為2~10的直鏈烯基中的任意一種。The one or more compounds represented by the formula III are preferably one or more of the compounds represented by the following formulae III-1 to III-29, Ⅲ-1 Ⅲ-2 Ⅲ-3 Ⅲ-4 Ⅲ-5 Ⅲ-6 Ⅲ-7 Ⅲ-8 Ⅲ-9 Ⅲ-10 Ⅲ-11 Ⅲ-12 Ⅲ-13 Ⅲ-14 Ⅲ-15 Ⅲ-16 Ⅲ-17 Ⅲ-18 Ⅲ-19 Ⅲ-20 Ⅲ-21 Ⅲ-22 Ⅲ-23 Ⅲ-24 Ⅲ-25 Ⅲ-26 Ⅲ-27 Ⅲ-28 Ⅲ-29 wherein R 4 each independently represents a linear alkyl group having 1 to 10 carbon atoms, a linear alkoxy group having 1 to 10 carbon atoms or a linear alkenyl group having 2 to 10 carbon atoms; Y 1 each independently represents F, a linear alkyl group having 1 to 6 carbon atoms, a linear alkoxy group having 1 to 6 carbon atoms, or a linear alkenyl group having 2 to 6 carbon atoms, of which any One or more H may be replaced by F; (F) each independently represents H or F. The one or more compounds of formula III are more preferably one or more of the compounds shown below Ⅲ-t Ⅲ-s Ⅲ-u Ⅲ-v Ⅲ-a-1 Ⅲ-a-2 Ⅲ-a-3 Ⅲ-a-4 Ⅲ-a-5 Ⅲ-a-6 Ⅲ-a-7 Ⅲ-a-8 Ⅲ-a-9 Ⅲ-b-1 Ⅲ-b-2 Ⅲ-b-3 Ⅲ-c-1 Ⅲ-c-2 Ⅲ-c-3 Ⅲ-d-1 Ⅲ-d-2 Ⅲ-d-3 Ⅲ-d-4 Ⅲ-e-1 Ⅲ-e-2 Ⅲ-e-3 Ⅲ-e-4 Ⅲ-f-1 Ⅲ-f-2 Ⅲ-f-3 Ⅲ-f-4 Ⅲ-g-1 Ⅲ-g-2 Ⅲ-g-3 Ⅲ-g-4 Ⅲ-h-1 Ⅲ-h-2 Ⅲ-h-3 Ⅲ-i-1 Ⅲ-i-2 Ⅲ-i-3 Ⅲ-j-1 Ⅲ-j-2 Ⅲ-j-3 Ⅲ-k-1 Ⅲ-l-1 Ⅲ-m-1 Ⅲ-n-1 Ⅲ-o-1 Ⅲ-p-1 Ⅲ-q-1 Ⅲ-r-1 Ⅲ-r-2 Ⅲ-r-3 Ⅲ-r-4 Ⅲ-s-1 Ⅲ-t-1 Ⅲ-u-1 wherein R 4 is selected from a linear alkyl group having 1 to 10 carbon atoms, a linear alkoxy group having 1 to 10 carbon atoms or a linear alkenyl group having 2 to 10 carbon atoms Any of them.
本發明所提供的液晶組合物可以應用於液晶顯示元件或液晶顯示器中。The liquid crystal composition provided by the present invention can be applied to a liquid crystal display element or a liquid crystal display.
由於採用了上述技術方案，本發明取得的技術進步是：Due to the adoption of the above technical solution, the technical progress achieved by the present invention is:
本發明所提供的液晶組合物具有正介電性，具有超高的透過率，高電荷保持率、低功耗、低旋轉黏度、響應時間快的特點，適用於有源矩陣電光學元件和液晶顯示器，且尤其是扭曲向列(TN)、面內轉向(IPS)或廣視角(FFS)類型的顯示器。The liquid crystal composition provided by the present invention has the characteristics of positive dielectric properties, ultra-high transmittance, high charge retention, low power consumption, low rotational viscosity, and fast response time, and is suitable for active matrix electro-optical elements and liquid crystals. Displays, and especially displays of the twisted nematic (TN), in-plane steering (IPS) or wide viewing angle (FFS) type.
本發明提供的正介電性液晶組合物性能優異，可滿足對於面板高解析度的需求，具有抗氧化穩定性、抗紫外穩定性以及抗高低溫穩定性。也具有非常低的總響應時間，具有較低的電壓，高的電阻率及電壓保持率。通過對各個組分含量的調整，本發明所述的向列相型液晶組合物可以具有不同臨界電壓和雙折射特性，可以做成客戶通常所用的各個體系，便於在不同液晶盒厚和不同驅動電壓下使用。且液晶混合物在高溫後仍能表現出高的電阻率，此液晶混合物表現出優異的具有優異的高溫和紫外穩定性能。同時，本發明中液晶混合物還表現出低黏度、快響應時間、適當的光學各向異性和適當的介電異方性，因此可應具有有源矩陣尋址的光電顯示器。The positive dielectric liquid crystal composition provided by the present invention has excellent performance, can meet the demand for high resolution of a panel, and has anti-oxidation stability, anti-ultraviolet stability, and high and low temperature stability. It also has a very low total response time, with lower voltage, high resistivity and voltage retention. By adjusting the content of each component, the nematic liquid crystal composition of the present invention can have different threshold voltages and birefringence characteristics, and can be made into various systems commonly used by customers, which is convenient for different liquid crystal cell thicknesses and different driving. Use under voltage. And the liquid crystal mixture can still show a high resistivity after high temperature, and the liquid crystal mixture shows excellent high temperature and UV stability performance. At the same time, the liquid crystal mixture in the present invention also exhibits low viscosity, fast response time, appropriate optical anisotropy, and appropriate dielectric anisotropy, so it can have an optoelectronic display with active matrix addressing.
本發明的正介電性液晶組合物，可以用於有源矩陣顯示器，較佳地通過薄膜電晶體（TFT）的矩陣尋址，特別適用於製造快速響應的有源矩陣TN-TFT，IPS-TFT液晶顯示元件和液晶顯示器，也屬於本發明的保護範圍。The positive dielectric liquid crystal composition of the present invention can be used in an active matrix display, preferably through matrix addressing of a thin film transistor (TFT), and is particularly suitable for manufacturing a fast response active matrix TN-TFT, IPS- TFT liquid crystal display elements and liquid crystal displays also belong to the protection scope of the present invention.
本發明的液晶組合物可採用常規方法將兩種或多種液晶化合物混合進行生產，如在高溫下混合不同組分並彼此溶解的方法製備，其中，將液晶組合物溶解在用於該化合物的溶劑中並混合，然後在減壓下蒸餾出該溶劑；或者本發明的液晶組合物可按照常規的製備方法製備。The liquid crystal composition of the present invention can be produced by mixing two or more liquid crystal compounds by a conventional method, such as a method of mixing different components at a high temperature and dissolving each other, wherein the liquid crystal composition is dissolved in a solvent for the compound The mixture is neutralized and mixed, and then the solvent is distilled off under reduced pressure; or the liquid crystal composition of the present invention can be prepared according to a conventional production method.
本發明中符號的具體意義及測試條件如下：The specific meanings and test conditions of the symbols in the present invention are as follows:
%：重量百分含量；%: Content by weight;
℃：溫度單位，攝氏度；℃: temperature unit, Celsius;
Cp：表示液晶的清晰點（℃）。Cp: indicates the clear point (° C) of the liquid crystal.
S-N：表示液晶的晶態到向列相的熔點（℃）。S-N: The melting point (° C) of the crystalline state to the nematic phase of the liquid crystal.
△n：為光學各向異性，no為尋常光的折射率，ne為非尋常光的折射率，測試條件為，589nm，25℃。△ n: optical anisotropy, no is the refractive index of ordinary light, ne is the refractive index of extraordinary light, and the test conditions are 589 nm and 25 ° C.
△ε：為介電異方性，△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℃；1KHz；HP4284A；5.2微米TN左旋盒。△ ε: dielectric anisotropy, △ ε = ε ∥ -ε⊥, where ε ∥ is a dielectric constant parallel to the molecular axis, ε ⊥ is a dielectric constant perpendicular to the molecular axis, and the test condition is 25 ° ; 1KHz; HP4284A; 5.2 micron TN left-handed box.
τ：響應時間[ms]，的測試儀器為DMS-501，測試條件為25±0.5℃，測試盒5.2微米TN左旋盒。τ: response time [ms], the test instrument is DMS-501, the test conditions are 25 ± 0.5 ° C, and the test box is a 5.2 micron TN left-handed box.
V10為液晶的光學臨界電壓[v]，V90為液晶的飽和電壓值[v]，測試條件為5.2微米TN左旋盒，25℃。V10 is the optical critical voltage [v] of the liquid crystal, V90 is the saturation voltage value [v] of the liquid crystal, and the test conditions are a 5.2 micron TN left-handed cell at 25 ° C.
γ1 ：旋轉黏度[mPa·s] ,測試條件為25±0.5℃。γ1: Rotational viscosity [mPa · s], test condition is 25 ± 0.5 ℃.
下面結合具體實施例對本發明作進一步闡述，但下面的實施例為本發明的示例，本發明並不限於以下實施例。在不偏離本發明主旨或範圍的情況下，通過在本發明的液晶組合物內還可以通過對各組分含量的調整，修改或改良出具有不同臨界，清晰點，雙折射特性的液晶混合物，這對所屬領域中具有通常知識者是顯而易見的。所述方法如無特別說明均為常規方法。所述材料如無特別說明均能從公開商業途徑而得。The present invention will be further described below with reference to specific embodiments, but the following embodiments are examples of the present invention, and the present invention is not limited to the following embodiments. Without departing from the spirit or scope of the present invention, by adjusting the content of each component in the liquid crystal composition of the present invention, it is possible to modify or improve liquid crystal mixtures with different critical, clear points, and birefringent properties. This is obvious to those with ordinary knowledge in the field. The methods are conventional methods unless otherwise specified. The materials are available from publicly available sources unless otherwise specified.
在以下的實施例中所採用的各成分，均可以通過習知的方法進行合成，或者通過商業途徑獲得。這些合成技術是常規的，所得到的各液晶化合物經測試符合電子類化合物標準。Each of the components used in the following examples can be synthesized by conventional methods or obtained through commercial means. These synthetic techniques are conventional, and the resulting liquid crystal compounds have been tested to comply with electronic compound standards.
按照以下實施例規定的各液晶組合物的配比，製備液晶組合物。所述液晶組合物的製備是按照本領域的常規方法進行的，如採取加熱，超聲波，懸浮等方式按照規定比例混合製得。A liquid crystal composition was prepared according to the compounding ratio of each liquid crystal composition specified in the following examples. The preparation of the liquid crystal composition is performed according to a conventional method in the art, such as heating, ultrasonic wave, suspension, etc., and mixing the mixture according to a prescribed ratio.
取以下重量百分含量的液晶化合物配置液晶組合物，製備並研究下列實施例中給出的液晶組合物。下面顯示了各液晶組合物的組成和其性能參數測試結果。The liquid crystal composition was prepared by taking the following liquid crystal compounds in the following percentages by weight, and the liquid crystal compositions given in the following examples were prepared and studied. The composition and performance parameter test results of each liquid crystal composition are shown below.
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 embodiment of the present application is represented by a code, and the method for representing the structure of the liquid crystal ring structure, the end group and the linking group is shown in the following table (a) and (b)
表（一）：環結構的對應代碼
表（二）：端基與連結基團的對應代碼
實施例1Example 1
表1實施例1的液晶組合物配方及其測試性能參數
實施例2Example 2
按表2中所列的各化合物及重量百分數配製成本發明的液晶組合物，其填充於液晶顯示器兩基板間進行性能測試，測試資料如下表所示：The liquid crystal composition of the present invention is prepared according to the compounds and weight percentages listed in Table 2. The liquid crystal composition is filled between two substrates of a liquid crystal display for performance testing. The test data is shown in the following table:
表2實施例2的液晶組合物配方及其測試性能參數
實施例3Example 3
按表3中所列的各化合物及重量百分數配製成本發明的液晶組合物，其填充於液晶顯示器兩基板間進行性能測試，測試資料如下表所示：The liquid crystal composition of the present invention is prepared according to the compounds and weight percentages listed in Table 3. The liquid crystal composition is filled between two substrates of a liquid crystal display for performance testing. The test data is shown in the following table:
表3實施例3的液晶組合物配方及其測試性能參數
實施例4Example 4
按表4中所列的各化合物及重量百分數配製成本發明的液晶組合物，其填充於液晶顯示器兩基板間進行性能測試，測試資料如下表所示：The liquid crystal composition of the present invention is prepared according to the compounds and weight percentages listed in Table 4, which is filled between the two substrates of the liquid crystal display for performance testing. The test data is shown in the following table:
表4實施例4的液晶組合物配方及其測試性能參數
實施例5Example 5
按表5中所列的各化合物及重量百分數配製成本發明的液晶組合物，其填充於液晶顯示器兩基板間進行性能測試，測試資料如下表所示：The liquid crystal composition of the present invention is prepared according to the compounds and weight percentages listed in Table 5. The liquid crystal composition is filled between two substrates of a liquid crystal display for performance testing. The test data is shown in the following table:
表5實施例5的液晶組合物配方及其測試性能參數
實施例6Example 6
按表6中所列的各化合物及重量百分數配製成本發明的液晶組合物，其填充於液晶顯示器兩基板間進行性能測試，測試資料如下表所示：The liquid crystal composition of the present invention is prepared according to the compounds and weight percentages listed in Table 6, which is filled between two substrates of a liquid crystal display for performance testing. The test data is shown in the following table:
表6實施例6的液晶組合物配方及其測試性能參數
實施例7Example 7
按表7中所列的各化合物及重量百分數配製成本發明的液晶組合物，其填充於液晶顯示器兩基板間進行性能測試，測試資料如下表所示：The liquid crystal composition of the present invention is prepared according to the compounds and weight percentages listed in Table 7. The liquid crystal composition is filled between two substrates of a liquid crystal display for performance testing. The test data is shown in the following table:
表7實施例7的液晶組合物配方及其測試性能參數
實施例8Example 8
按表8中所列的各化合物及重量百分數配製成本發明的液晶組合物，其填充於液晶顯示器兩基板間進行性能測試，測試資料如下表所示：The liquid crystal composition of the present invention is prepared according to the compounds and weight percentages listed in Table 8. The liquid crystal composition is filled between two substrates of a liquid crystal display for performance testing. The test data is shown in the following table:
表8實施例8的液晶組合物配方及其測試性能參數
實施例9Example 9
按表9中所列的各化合物及重量百分數配製成本發明的液晶組合物，其填充於液晶顯示器兩基板間進行性能測試，測試資料如下表所示：The liquid crystal composition of the present invention is prepared according to the compounds and weight percentages listed in Table 9. It is filled between two substrates of a liquid crystal display for performance testing. The test data is shown in the following table:
表9實施例9的液晶組合物配方及其測試性能參數
實施例10Example 10
按表10中所列的各化合物及重量百分數配製成本發明的液晶組合物，其填充於液晶顯示器兩基板間進行性能測試，測試資料如下表所示：The liquid crystal composition of the present invention is prepared according to the compounds and weight percentages listed in Table 10, which is filled between two substrates of a liquid crystal display for performance testing. The test data is shown in the following table:
表10實施例10的液晶組合物配方及其測試性能參數
對比例1（D1）
對比例2（D2）
對比例3（D3）
對比例4（D4）
實施例1-10及對比例1-4的基本性能參數測試結果
實施例1-2及對比例1-4的信賴性能參數測試結果
實施例3-10的信賴性能參數測試結果
注：Note:
響應時間（4.5V，ms）Response time (4.5V, ms)
低溫存儲（天）Low temperature storage (days)
透過率（%）Transmission rate (%)
紫外5000mJ（50mw/cm2 ）UV 5000mJ (50mw / cm 2 )
高溫100℃ 1hHigh temperature 100 ℃ 1h
從實施例1~10中可以看出，本發明所指的混合物相比與對比例1~4具有透過率有顯著提升，同時低溫信賴性好，響應時間，旋轉黏度明顯降低的同時耐光熱能力顯著提升。It can be seen from Examples 1 to 10 that the mixture referred to in the present invention has a significant improvement in transmittance compared to Comparative Examples 1 to 4, and has low temperature reliability, good response time, and reduced rotational viscosity, while being resistant to light and heat. Significant improvement.
由實施例1~ 10可知，本向列相型液晶組合物在低溫區域可維持快的響應時間，可拓寬TN、IPS液晶模式的使用溫度，並且具有較快的響應時間和較寬的視角範圍，以及在對比度和信賴性方面有突出優勢。It can be known from Examples 1 to 10 that the nematic liquid crystal composition can maintain a fast response time in a low temperature region, can widen the use temperature of the TN and IPS liquid crystal modes, and has a faster response time and a wider viewing angle range. , As well as outstanding advantages in contrast and reliability.
本發明雖然僅僅列舉了上述10個實施例的具體物質和配比質量百分比，並對組成的液晶組合物的性能進行了測試，但是本發明的液晶組合物可以在上述實施例的基礎上，利用本發明所涉及的通式I、II、III、所代表的化合物、以及通式I、II、III的較佳地的化合物進行進一步拓展和修改，均能達到本發明的目的。Although the present invention only enumerates the specific substances and proportion mass percentages of the above 10 embodiments, and tests the performance of the composed liquid crystal composition, the liquid crystal composition of the present invention can be used on the basis of the above embodiments. Further development and modification of the general compounds I, II, III, the compounds represented by the present invention, and the preferred compounds of the general formulas I, II, III can all achieve the object of the present invention.
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