CN111484857B - 液晶组合物及液晶显示元件、液晶显示器 - Google Patents
液晶组合物及液晶显示元件、液晶显示器 Download PDFInfo
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Abstract
本公开涉及液晶组合物,包含该液晶组合物的液晶显示元件、液晶显示器,属于液晶显示领域,所述液晶组合物包含式I所示的化合物、式II所示的化合物、一种或多种式III所示的化合物、以及、至少一种可聚合化合物,该液晶组合物兼具低的旋转粘度、较大的折射率、快速的响应速度。
Description
技术领域
本公开属于液晶显示领域,更具体地,涉及液晶组合物及包含该液晶组合物的液晶显示元件、液晶显示器。
背景技术
早期商用的TFT-LCD产品基本采用了TN显示模式,其最大问题是视角窄。随着产品尺寸的增加,特别是在TV领域的应用,具有广视野角特点的IPS显示模式、VA显示模式依次被开发出来并加以应用,尤其是基于VA显示模式的改进,分别先后在各大公司得到了突破性的发展,这主要取决于VA模式本身所具有的宽视野角、高对比度和无需摩擦配向等优势,再有就是,VA模式显示的对比度对液晶的光学各向异性(△n)、液晶盒的厚度(d)和入射光的波长(λ)依赖度较小,必将使得VA这种模式成为极具前景的显示技术。
但是,VA模式等的显示元件所用的液晶介质,本身并不完美,与正介电各向异性的显示元件相比,其存在介电偏小,响应时间比较慢,驱动电压比较高等缺点,并且会更容易出现显示不良、残像等问题。
目前,应用于显示器件的响应速度优良、各种显示不良得到改善的液晶组合物仍然是人们期望获得的。
发明内容
为了解决现有技术中存在的问题,本发明人等进行了深入研究后惊奇地发现,通过使用含有后述的式I所示化合物、式II所示化合物以及式III所示化合物的组合的液晶组合物,在应用于液晶显示元件中时,表现出快速的响应速度,从而完成了本公开。
本公开的第一个目的在于提供一种液晶组合物,该液晶组合物具有低的旋转粘度、快速的响应速度。
本公开的第二个目的在于提供一种液晶显示元件,其含有本公开的液晶组合物。该液晶显示元件具有快速的响应速度。
本公开的第三个目的还在于提供一种液晶显示器,其含有本公开的液晶组合物。该液晶显示器具有快速的响应速度。
为达到上述目的,本公开采用下述技术方案:
本公开提供液晶组合物,其包含式I所示的化合物、式II所示的化合物、一种或多种式III所示的化合物,以及,至少一种可聚合化合物:
其中:
R1、R2各自独立地表示碳原子数为1-10的烷氧基。
本公开的液晶组合物中,对于前述的可聚合化合物没有任何限定,本领域技术人员能够根据本领域的常识来选择适宜的可聚合化合物。
本公开还提供液晶显示元件,其包含本公开的液晶组合物,所述液晶显示元件为有源矩阵寻址显示元件或者无源矩阵寻址显示元件。
本公开还提供液晶显示器,其包含本公开的液晶组合物,所述液晶显示器为有源矩阵寻址显示器或者无源矩阵寻址显示器。
具体实施方式
[液晶组合物]
本公开的液晶组合物包含式I所示的化合物、式II所示的化合物、一种或多种式III所示的化合物、以及、至少一种可聚合化合物。
其中:
R1、R2各自独立地表示碳原子数为1-10的烷氧基。
作为前述的碳原子数为1-10的烷氧基,可以列举出例如,甲氧基、乙氧基、正丙氧基、异丙氧基、正丁氧基、异丁氧基、戊氧基、己氧基、庚氧基、辛氧基、壬氧基、癸氧基等。
本公开的液晶组合物中,前述的可聚合化合物优选选自式RM-1至RM-8
本公开的液晶组合物中,优选地,还包含一种或多种式Ⅳ所示化合物:
其中,R3、R4表示碳原子数为1-10的烷基、氟取代的碳原子数为1-10的烷基、碳原子数为1-10的烷氧基、氟取代的碳原子数为1-10的烷氧基、碳原子数为2-10的链烯基、氟取代的碳原子数为2-10的链烯基、碳原子数为3-8的链烯氧基或氟取代的碳原子数为3-8的链烯氧基;并且R3、R4所示基团中任意一个或多个不相连的CH2任选被环戊基、环丁基或环丙基取代;
Z1、Z2各自独立地表示单键、-CH2CH2-或-CH2O-;
各自独立地表示1,4-亚环己基、1,4-亚环己烯基、1,4-亚苯基或氟代1,4-亚苯基;
m、n各自独立地表示0、1或2且m+n≤2;
且当m+n=1、Z1、Z2为单键、表示1,4-亚苯基时,R3、R4不同时表示碳原子数为1-10的烷氧基。
本公开的液晶组合物中,优选地,前述Ⅳ所示的化合物选自下述式Ⅳ-1至Ⅳ-14所示的化合物组成的组:
其中:
R31表示碳原子数为1-10的烷基、氟取代的碳原子数为1-10的烷基、碳原子数为2-10的链烯基、氟取代的碳原子数为2-10的链烯基、或者、碳原子数为3-8的链烯氧基或氟取代的碳原子数为3-8的链烯氧基;R41表示碳原子数为1-10的烷基、氟取代的碳原子数为1-10的烷基、碳原子数为1-10的烷氧基、氟取代的碳原子数为1-10的烷氧基、碳原子数为2-10的链烯基、氟取代的碳原子数为2-10的链烯基、或者、碳原子数为3-8的链烯氧基;并且R31、R41所示基团中任意一个或多个不相连的CH2任选被环戊基、环丁基或环丙基取代。
本公开的液晶组合物中,优选地,以可聚合化合物之外的成分的总和为100质量%,前述式Ⅰ所示的化合物的总质量含量为1-47%;前述式Ⅱ所示的化合物的总质量含量为1-25%;前述式Ⅲ所示的化合物的总质量含量为1-35%;可聚合化合物在液晶总质量%基础上进行添加,前述可聚合化合物的添加量为0.01-1%,优选为0.03-0.4%。
本公开的液晶组合物中,优选还包含一种或多种式Ⅴ所示化合物:
其中,
R5、R6表示碳原子数为1-10的烷基、氟取代的碳原子数为1-10的烷基、碳原子数为1-10的烷氧基、氟取代的碳原子数为1-10的烷氧基、碳原子数为2-10的链烯基、或者、氟取代的碳原子数为2-10的链烯基;
各自独立地表示1,4-亚环己基、1,4-亚环己烯基或1,4-亚苯基;且同时表示1,4-亚环己基,R5、R6中的一者表示丙基时,R5、R6中的另一者不表示乙烯基。
本公开的液晶组合物,优选地,前述式Ⅴ所示的化合物选自下述式Ⅴ-1至Ⅴ-3所示的化合物组成的组:
其中,R5、R6表示碳原子数为1-10的烷基、氟取代的碳原子数为1-10的烷基、碳原子数为1-10的烷氧基、氟取代的碳原子数为1-10的烷氧基、碳原子数为2-10的链烯基、或者、氟取代的碳原子数为2-10的链烯基;式Ⅴ-1中,R5、R6中的一者表示丙基时,R5、R6中的另一者不表示乙烯基。
本公开的液晶组合物中,优选还包含选自下述式Ⅵ-1至Ⅵ-3所示的化合物组成的组:
其中,
R71表示碳原子数为1-10的烷基、氟取代的碳原子数为1-10的烷基、碳原子数为1-10的烷氧基、氟取代的碳原子数为1-10的烷氧基、或者、乙烯基;R72、R73、R8表示碳原子数为1-10的烷基、氟取代的碳原子数为1-10的烷基、碳原子数为1-10的烷氧基、氟取代的碳原子数为1-10的烷氧基、碳原子数为2-10的链烯基、或者、氟取代的碳原子数为2-10的链烯基。
本公开的液晶组合物中,优选还包含一种或多种式Ⅶ所示化合物:
其中,
R9表示碳原子数为1-10的烷基、氟取代的碳原子数为1-10的烷基、碳原子数为1-10的烷氧基、或者、氟取代的碳原子数为1-10的烷氧基,这些基团中任意一个或多个不相连的CH2任选被环戊基、环丁基或环丙基取代;
R10表示原子数为1-10的烷基、氟取代的碳原子数为1-10的烷基、碳原子数为1-10的烷氧基、或者、氟取代的碳原子数为1-10的烷氧基;
X表示O或S。
本公开的液晶组合物,优选地,前述式Ⅶ所示的化合物选自下述式Ⅶ-1至Ⅶ-12所示的化合物组成的组:
其中,R91、R101表示碳原子数为1-10的烷基。
[液晶显示元件]
本公开的液晶显示元件包含本公开的液晶组合物,所述液晶显示元件为有源矩阵显示元件或无源矩阵显示元件。
可选的,所述液晶显示元件可以为有源矩阵液晶显示元件。
可选的,所述有源矩阵显示元件可以为例如PSVA-TFT液晶显示元件。
包含本公开的液晶组合物的液晶显示元件具有较快的响应速度、较低的盒厚。
[液晶显示器]
本公开的液晶显示器包含本公开的液晶组合物,所述液晶显示器为有源矩阵显示器或无源矩阵显示器。
可选的,所述液晶显示器可以为有源矩阵液晶显示器。
可选的,所述有源矩阵显示器可以为例如PSVA-TFT液晶显示器。
包含本公开的液晶组合物的液晶显示器具有较快的响应速度、较低的盒厚。
实施例
为了更清楚地说明本公开,下面结合优选实施例对本公开做进一步的说明。本领域技术人员应当理解,下面所具体描述的内容是说明性的而非限制性的,不应以此限制本公开的保护范围。
本说明书中,如无特殊说明,百分比均是指质量百分比,温度为摄氏度(℃),其他符号的具体意义及测试条件如下:
Cp表示液晶清亮点(℃),DSC定量法测试;
Δn表示光学各向异性,no为寻常光的折射率,ne为非寻常光的折射率,测试条件为25±2℃,589nm,阿贝折射仪测试;
Δε表示介电各向异性,Δε=ε∥-ε⊥,其中,ε∥为平行于分子轴的介电常数,ε⊥为垂直于分子轴的介电常数,测试条件为25±0.5℃,20微米平行盒,INSTEC:ALCT-IR1测试;
γ1表示旋转粘度(mPa·s),测试条件为25±0.5℃,20微米平行盒,INSTEC:ALCT-IR1测试;
K11为扭曲弹性常数,K33为展曲弹性常数,测试条件为:25℃、INSTEC:ALCT-IR1、18微米垂直盒;
液晶组合物的制备方法如下:将各液晶单体按照一定配比称量后放入不锈钢烧杯中,将装有各液晶单体的不锈钢烧杯置于磁力搅拌仪器上加热融化,待不锈钢烧杯中的液晶单体大部份融化后,往不锈钢烧杯中加入磁力转子,将混合物搅拌均匀,冷却到室温后即得液晶组合物。
本公开实施例液晶单体结构用代码表示,液晶环结构、端基、连接基团的代码表示方法见下表1、表2。
表1环结构的对应代码
表2端基与链接基团的对应代码
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举例:
其代码为CC-Cp-V1;
其代码为CPY-2-O2;
其代码为CCY-3-O2;
其代码为COY-3-O2;
其代码为CCOY-3-O2;/>
其代码为Sb-Cp1O-O4;
其代码为Sc-Cp1O-O4。
实施例1
液晶组合物的配方及相应的性能如下表3所示。
表3实施例1液晶组合物的配方及相应的性能
对比例1
液晶组合物的配方及相应的性能如下表4所示。
表4对比例1液晶组合物的配方及相应的性能
将实施例1中的CC-3-V替换为CC-5-V作为对比例1。与对比例1相比,实施例1在常温没有晶体析出,介电、折射率、K值性能差异较小,但旋转粘度γ1较小,γ1/K33较小,从而响应较快。由此可知,本公开的液晶组合物具有良好的低温互溶性、快速的响应速度。
对比例2
液晶组合物的配方及相应的性能如下表5所示。
表5对比例2液晶组合物的配方及相应的性能
将实施例1中的CCP-V2-1替换为CCP-3-O1作为对比例2。实施例1与对比例2相比,常温没有晶体析出,介电、折射率、K值性能差异较小,但旋转粘度γ1较小,γ1/K33较小,从而响应较快。由此可知,本公开的液晶组合物具有良好的低温互溶性、快速的响应速度。
对比例3
液晶组合物的配方及相应的性能如下表6所示。
表6对比例3液晶组合物的配方及相应的性能
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将实施例1中的PY-2O-O2、PY-2O-O4、PY-1O-O2替换为PY-3-O2、PY-2-O4、PY-1-O2作为对比例3,实施例1与对比例3相比,实施例1具有大的介电、高的清亮点以及大的折射率。由此可知,本公开的液晶组合物能够用于开发低盒厚、快速的响应速度的液晶组合物。
实施例2
液晶组合物的配方及相应的性能如下表7所示。
表7实施例2液晶组合物的配方及相应的性能
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实施例3
液晶组合物的配方及相应的性能如下表8所示。
表8实施例3液晶组合物的配方及相应的性能
/>
实施例4
液晶组合物的配方及相应的性能如下表9所示。
表9实施例4液晶组合物的配方及相应的性能
/>
实施例5
液晶组合物的配方及相应的性能如下表10所示。
表10实施例5液晶组合物的配方及相应的性能
/>
实施例6
液晶组合物的配方及相应的性能如下表11所示。
表11实施例6液晶组合物的配方及相应的性能
/>
实施例7
液晶组合物的配方及相应的性能如下表12所示。
表12实施例7液晶组合物的配方及相应的性能
/>
实施例8
液晶组合物的配方及相应的性能如下表13所示。
表13实施例8液晶组合物的配方及相应的性能
/>
对比例4
液晶组合物的配方及相应的性能如下表14所示。
表14对比例4液晶组合物的配方及相应的性能
/>
将实施例8中的CCP-V2-1替换为CCP-3-1作为对比例4。实施例8与对比例4相比,介电、折射率、清亮点及K33性能差异较小,但是实施例8的γ1较小,γ1/K33较小,响应较快。由此可知,本公开的液晶组合物具有快速响应的优势,且在用于ODF液晶显示器件的制程时液晶显示器件无不良显示。
实施例9
液晶组合物的配方及相应的性能如下表15所示。
表15实施例9液晶组合物的配方及相应的性能
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实施例10
液晶组合物的配方及相应的性能如下表16所示。
表16实施例10液晶组合物的配方及相应的性能
/>
实施例11
液晶组合物的配方及相应的性能如下表17所示。
表17实施例11液晶组合物的配方及相应的性能
/>
实施例12
液晶组合物的配方及相应的性能如下表18所示。
表18实施例12液晶组合物的配方及相应的性能
/>
实施例13
液晶组合物的配方及相应的性能如下表19所示。
表19实施例13液晶组合物的配方及相应的性能
/>
对比例5
液晶组合物的配方及相应的性能如下表20所示。
表20对比例5液晶组合物的配方及相应的性能
/>
将实施例13中的CCP-V2-1替换为CCP-3-O1作为对比例5。实施例13与对比例5相比,介电、折射率、清亮点及K33性能差异较小,但是实施例13的γ1较小,γ1/K33较小,响应较快。由此可知,本公开的液晶组合物具有快速响应的优势。
实施例14
液晶组合物的配方及相应的性能如下表21所示。
表21实施例14液晶组合物的配方及相应的性能
/>
实施例15
液晶组合物的配方及相应的性能如下表22所示。
表22实施例15液晶组合物的配方及相应的性能
/>
对比例6
液晶组合物的配方及相应的性能如下表23所示。
表23对比例6液晶组合物的配方及相应的性能
/>
将实施例15中的CC-3-V替换为CC-5-V作为对比例6。实施例15与对比例6相比,介电、折射率、清亮点及K33性能差异较小,但是实施例15的γ1较小,γ1/K33较小,响应较快。由此可知,本公开的液晶组合物具有快速响应的优势。
显然,本公开的上述实施例仅仅是为清楚地说明本公开所作的举例,而并非是对本公开的实施方式的限定,对于所属领域的普通技术人员来说,在上述说明的基础上还可以做出其它不同形式的变化或变动,这里无法对所有的实施方式予以穷举,凡是属于本公开的技术方案所引伸出的显而易见的变化或变动仍处于本公开的保护范围之列。
Claims (5)
1.一种液晶组合物,其特征在于,所述液晶组合物包含:式I所示的化合物、式II所示的化合物、一种或多种式III所示的化合物、以及、式RM-1所示可聚合化合物,还包括一种或多种式Ⅳ-2、式Ⅳ-5、式Ⅳ-8所示的化合物,和,一种或多种式Ⅵ-1、式Ⅵ-2所示的化合物,和,一种或多种式Ⅶ-10、Ⅶ-12所示的化合物,
式III中,R1、R2各自独立地表示碳原子数为1-10的烷氧基;
R31表示碳原子数为1-10的烷基;
R41表示碳原子数为1-10的烷氧基;
R71表示碳原子数为1-10的烷基、或者、乙烯基;
R72表示碳原子数为2-10的链烯基;
R8表示碳原子数为1-10的烷基;
R91、R101各自独立地表示碳原子数为1-10的烷基。
2.根据权利要求1所述的液晶组合物,其特征在于,所述液晶组合物还包含一种或多种式Ⅴ所示化合物:
式V中,R5、R6各自独立地表示碳原子数为1-10的烷基、氟取代的碳原子数为1-10的烷基、碳原子数为1-10的烷氧基、氟取代的碳原子数为1-10的烷氧基、碳原子数为2-10的链烯基、或者、氟取代的碳原子数为2-10的链烯基;
各自独立地表示1,4-亚环己基、1,4-亚环己烯基或1,4-亚苯基;且同时表示1,4-亚环己基,R5、R6中的一者表示丙基时,R5、R6中的另一者不为乙烯基。
3.根据权利要求2所述的液晶组合物,其特征在于,所述一种或多种式Ⅴ所示的化合物选自式Ⅴ-1至Ⅴ-3所示的化合物组成的组:
其中,
R5、R6各自独立地表示碳原子数为1-10的烷基、氟取代的碳原子数为1-10的烷基、碳原子数为1-10的烷氧基、氟取代的碳原子数为1-10的烷氧基、碳原子数为2-10的链烯基、或者、氟取代的碳原子数为2-10的链烯基;
式Ⅴ-1中,R5、R6中的一者表示丙基时,R5、R6中的另一者不为乙烯基。
4.一种液晶显示元件,其特征在于,包含权利要求1-3任一项所述的液晶组合物,所述液晶显示元件为有源矩阵寻址显示元件或者无源矩阵寻址显示元件。
5.一种液晶显示器,其特征在于,包含权利要求1-3任一项所述的液晶组合物,所述液晶显示器为有源矩阵寻址显示器或者无源矩阵寻址显示器。
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