CN109825309B - 一种液晶组合物及其调光器件 - Google Patents
一种液晶组合物及其调光器件 Download PDFInfo
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Abstract
Description
技术领域
本发明涉及一种液晶组合物,特别涉及一种可应用在调光器件上的液晶组合物。此外,本发明还涉及一种包含所述液晶组合物的调光器件。
背景技术
调光玻璃,作为最常用的建筑材料之一,具有安全耐用、清澈透光等传统特点,还具有根据需要调节光透过率的功能,从而赋予玻璃新的功能,如阻止紫外线、红外线进入,增加隐私性等。而液晶基调光玻璃就是其中发展迅速的一种技术。
常用的液晶基智能玻璃采用聚合物分散液晶(PDLC)技术,利用向列相液晶与高分子聚合物形成PDLC,控制液晶的排列状态,实现透光态与散射态之间的转换,从而实现电控调光的功能,例如在专利CN100545713C、专利申请CN106324884A中描述的。PDLC智能玻璃可实现视觉阻挡和透过,具有良好的遮蔽和隐私隔离性能,然而,PDLC智能玻璃使用时透明态的雾度高,且存在角度依赖性,同时驱动电压过高,长时间工作后耗电量大。
双介晶化合物指分子中包含两个介晶基元的液晶化合物,也就是说具有两个可诱导液晶相能力的基团。由于双介晶化合物的特殊的结构,其可以在向列相液晶混合物中诱导出第二向列相(扭曲-弯曲向列相),从而获得相对高的展曲弹性常数K11、相对低的弯曲弹性常数K33、以及比较低的挠曲电系数,双介晶化合物常应用在挠曲电液晶器件中。
因此,需要一种液晶组合物,由其制备的调光器件在保持散射态的高雾度的同时,可以降低透明态的雾度,从而达到高效调光的效果。
发明内容
发明目的:本发明的目的是提供一种液晶组合物,由其制备的调光器件在保持散射态的高雾度的同时,可以降低透明态的雾度,从而达到高效调光的效果。
本发明的另一目的是提供一种包含所述液晶组合物的调光器件。
本发明的技术方案:
本发明的一个方面提供一种应用于调光器件的液晶组合物,所述液晶组合物包含:
至少一种选自通式I的化合物
至少一种选自通式II和/或通式III的化合物
至少一种手性化合物,
其中,
R1和R2各自独立地表示-H、-F、-Cl、-CN、-NCS、或者C原子数为1-25的链烷基,其中,所述链烷基中的一个或多个H原子可以各自独立地被卤素或CN取代,所述链烷基中的一个或多个不相邻的-CH2-可以各自独立地被-O-、-S-、-NH-、-N(CH3)-、-CO-、-COO-、-OCO-、-OCOO-、-SCO-、-COS-、-CH=CH-、-CH=CF-、-CF=CF-或-C≡C-替代,所述替代的方式不包含两个-O-彼此相邻;
MG1和MG2各自独立地表示介晶基元;
X为C原子数为1、3或5至40的直链或支链亚烷基基团,其中,所述直链或支链亚烷基基团中的一个或多个不相邻的-CH2-可以各自独立地被-O-、-S-、-NH-、-N(CH3)-、-CO-、-COO-、-OCO-、-OCOO-、-SCO-、-COS-、-CH=CH-、-CH=CF-、-CF=CF-、-C≡C-或-CH(CN)-替代,所述替代的方式不包含两个-O-彼此相邻或两个选自由-OCO-、-SCO-、-OCOO-、-COS-、-COO-和-CH=CH-组成的组的基团彼此相邻;
B1和B2各自独立地表示-COO-、-OCO-、-CF2O-、-OCF2-、-CH2O-、-OCH2-、-C≡C-、-CH=CH-、-CF2CF2-、-CF=CF-、单键或-(CH2)a-,其中a为2至10的偶数;
A1、A2、A3、A4各自独立地表示-CN、-F、-Cl、-NCS、-OCF3、-CF3或具有1-25个C原子的链烷基,所述链烷基中的一个或多个不相邻的-CH2-可以各自独立地被-O-、-S-、-NH-、-N(CH3)-、-CO-、-COO-、-OCO-、-OCOO-、-SCO-、-COS-、-CH=CH-、-CH=CF-、-CF=CF-或-C≡C-替代;
k是1、2、3或4,m是0、1或2,n是1、2或3,o是1或2,且m+n+o不大于5。
手性化合物可以诱导向列相液晶螺旋扭曲,形成手性向列相液晶,其相当于胆甾相液晶。优选地,所述手性化合物包括R01、R02、R03、R04、R05、R06、L01、L02、L03、L04、L05、以及其他常用于液晶中的手性化合物。
在优选实施方案中,所述通式I的化合物占所述液晶组合物总质量的1%-90%。进一步优选地,所述通式I的化合物占所述液晶组合物总质量的10%-50%。
在优选实施方案中,所述介晶基元选自由通式IV的介晶基元组成的组:
其中,
H6、H7、H8、H9各自独立地表示为环状结构,所述环状结构选自由 组成的组,其中所述环状结构中的1-4个H原子可以各自独立地被卤素、CN、或C原子数为1-7的链烷基取代,所述链烷基中的至少一个-CH2-可以被-CHO-、-CO-、-COO-或-OCO-替代,所述链烷基中的至少一个H原子可以被F或Cl取代,
B3、B4、B5各自独立地表示-COO-、-OCO-、-OCOO-、-OCH2-、-CH2O-、-CF2O-、-(CH2)2-、-(CH2)4-、-C≡C-、-CH=CH-、-CF2CF2-、-CF=CF-、-CH=CH-COO-、-OCO-CH=CH-或单键,
p、q和r为0或1。
在优选实施方案中,R1和R2各自独立地表示-F、-Cl、-CN、-OCF3、-CF3或未被取代的C原子数为1-25的烷基。
在优选实施方案中,A1和A2各自独立地表示-CN、-F、-Cl、-NCS、-OCF3、-CF3或具有2-15个C原子的链烷基。
在优选实施方案中,A1和A2各自独立地表示-CN、-F、-Cl、-NCS、-OCF3、-CF3或具有2-8个C原子的链烷基。
在优选实施方案中,A3和A4各自独立地表示-CN、-F、-Cl、-NCS、-OCF3、-CF3或具2-15个C原子的链烷基。
在优选实施方案中,A3和A4各自独立地表示-CN、-F、-Cl、-NCS、-OCF3、-CF3或具2-4个C原子的链烷基。
在优选实施方案中,X选自由通式V的基团组成的组:
其中,Y1和Y2各自独立地表示-COO-、-OCO-、-O-、-CH=CH-、-CF2O-、-OCF2-、-CF2CF2-或单键,s为3至13的奇数。
在优选实施方案中,所述通式I的化合物选自如下化合物组成的组:
在一些实施方案中,所述通式I的化合物进一步优选自式I-1到式I-10组成的组。
在优选实施方案中,所述通式II的化合物选自如下化合物组成的组:
在一些实施方案中,所述通式II的化合物进一步优选自式II-1到式II-10组成的组。
在优选实施方案中,所述通式III的化合物选自如下化合物组成的组:
在一些实施方案中,所述通式III的化合物进一步优选自式III-1到式III-7组成的组。
在优选实施方案中,所述液晶组合物还包括至少一种可聚合单体。所述可聚合单体可为光聚合单体,包括丙烯酸酯类单体和乙烯基醚类单体等,如PM001、市售的紫外固化胶NOA65等,也可为热聚合单体,如环氧树脂。
本发明另一方面提供一种包含所述液晶组合物的调光器件,所述调光器件包含两个稳定状态:使入射光基本上透射的透过态,以及使入射光基本上散射的雾态,所述透过态和所述雾态之间的转换可通过施加外部电场实现。
优选地,所述透过态的雾度不大于15%。在一些实施方案中,所述透过态的雾度不大于7%。
优选地,所述雾态的雾度不小于80%。在一些实施方案中,所述雾态的雾度不小于88%。
有益效果:
本发明提供了一种可应用在调光器件的液晶组合物,通过引入双介晶化合物,调整液晶体系的弹性系数,改善液晶组合物分子平面排列的均一性,减少织构缺陷,从而降低调光器件在透过态的雾度,同时提高雾态的雾度。
附图说明
通过参照对本发明的实施方案的图示说明可以更好地理解本发明,在附图中:
图1是根据本发明实施方案的调光器件的结构示意图;
图2是根据本发明实施方案的调光器件的结构示意图;
图3是根据本发明实施方案的调光器件的结构示意图。
具体实施方式
在以下的描述中,为了达到解释说明的目的以对本发明有一个全面的认识,阐述了大量的具体细节,然而,很明显的,对本领域技术人员而言,无需这些具体细节也可以实现本发明。在其他示例中,公知的结构和装置在方框图表中示出。在这方面,所举的说明性的示例实施方案仅为了说明,并不对本发明造成限制。因此,本发明的保护范围并不受上述具体实施方案所限,仅以所附的权利要求书的范围为准。
在以下的实施例中所采用的各成分,均可以通过公知的方法进行合成,或者通过商业途径获得。这些合成技术是常规的,所得到各液晶化合物经测试符合电子类化合物标准。
按照以下实施例规定的各液晶组合物的配比,制备液晶组合物。所述液晶组合物的制备是按照本领域的常规方法进行的。先按照相应的质量百分比称量各组分化合物,将液晶组合物放置于玻璃样品瓶中,加入磁力搅拌子,置于加热磁力搅拌器上,加热搅拌至样品瓶中的液晶组合物完全熔解,形成各向同性的透明溶液。此时的温度已达到液晶组合物的清亮点。若液晶组合物中包含对光敏感的可聚合单体时,根据相应的质量百分比继续称量可聚合单体,加入磁力搅拌子,密封后,避光加热至液晶组合物的清亮点。维持此温度,继续加热搅拌30分钟,以确保样品混合均匀。停止加热,继续搅拌2小时。
然后将混合均匀的液晶组合物通过真空法灌注到按照各种设计要求制作的空液晶盒中,UV胶封口固化后,制成调光器件。调光器件具有两个稳定状态:透过态和雾态。在透过态时,手性向列相液晶(即胆甾相液晶)分子基本上平行于器件基板,其螺旋轴与器件基板相垂直,形成胆甾相液晶的平面态织构。在此状态下,入射光基本上不受影响地透射而通过调光器件。在雾态时,胆甾相液晶分子形成焦锥态织构,此时入射光基本上被散射,形成雾度较大的状态。通过选取适合的驱动电压,可使调光器件在透过态和雾态之间转变,这两个状态的雾度使用WGT-S型雾度仪测量,从而测定其光学性能。
调光器件的结构如图1所示,其中101和102分别为上透明基板和下透明基板,可以为硬质基材(如透明玻璃),也可以是柔性基材(如PET)等。液晶层103设置在上透明基板101和下透明基板102之间,其中包括液晶组合物。在上透明基板101和液晶层103之间及下透明基板102和液晶层103之间设置有第一电极104和第二电极105,所述电极可为相对应的ITO镀层。108为封框胶,用以将液晶层中的液晶组合物限制在调光器件中。液晶层103的厚度可以用分散在液晶层103中的间隔子109的大小来控制。
在一些实施方案中,第一电极104和液晶层103之间可以包括第一配向层106,如图2所示。配向层106用于给液晶层103中的液晶分子进行配向,使液晶分子按照预设的模式进行排列。配向层106包括IPS、TN、STN等类型,如由深圳道尔顿电子材料有限公司生产的取向剂DL-2194制成的IPS型配向膜,由取向剂DL-2590制成的TN型配向膜,以及由取向剂DL-3260制成的STN型配向膜。在一些实施方案中,如图3所示,在第二电极105和液晶103之间进一步包括第二配向层107。
为便于表达,以下各实施例中,液晶组合物的基团结构用表1所列的代码表示,一些添加化合物的代码和结构也在表2中列出。液晶组合物的比例都采用质量百分比,而位于液晶层103相对两侧的配向层或透明基板均采用反平行的摩擦方式。
表1液晶化合物基团结构代码
其中,若n或m为“3”,即表示为烷基-C3H7。
表2其他添加化合物的代码和结构
对比例
表3液晶组合物配方
单体 | 比例/% |
2PPN | 7.6 |
5PPN | 21.8 |
5OPPN | 16.8 |
6OPPN | 7.9 |
3PP<sup>11</sup>PN | 16.8 |
5HPPN | 8.9 |
5PPPN | 4.2 |
R01 | 16.0 |
总计 | 100 |
表4调光器件的结构及性能测试数据
实施例1
表5液晶组合物配方
单体 | 比例/% |
NPP7PPN | 25.0 |
2PPN | 4.9 |
5PPN | 14.0 |
5OPPN | 10.8 |
6OPPN | 5.1 |
3PP<sup>11</sup>PN | 10.8 |
5HPPN | 5.7 |
5PPPN | 2.7 |
R01 | 16.0 |
NPPO5OPPN | 5.0 |
总计 | 100 |
表6调光器件的结构及性能测试数据
器件结构 | 盒厚/微米 | 配向层类型 | 雾态雾度/% | 透过态雾度/% |
如图1 | 16 | 无 | 88.8 | 3.3 |
如图1 | 16 | 无 | 87.3 | 3.2 |
实施例2
表7液晶组合物配方
表8调光器件的结构及性能测试数据
器件结构 | 盒厚/微米 | 配向层类型 | 雾态雾度/% | 透过态雾度/% |
如图1 | 16 | 无 | 89.0 | 5.2 |
如图3 | 16 | TN | 86.0 | 1.9 |
如图3 | 16 | IPS | 88.0 | 2.1 |
如图1 | 20 | 无 | 91.0 | 5.5 |
实施例3
表9液晶组合物配方
单体 | 比例/% |
2PPN | 4.9 |
5PPN | 14.0 |
5OPPN | 10.8 |
6OPPN | 5.1 |
3PP<sup>12</sup>PN | 10.8 |
5HPPN | 5.7 |
5PPPN | 2.7 |
R01 | 16.0 |
NPP7PPN | 30.0 |
总计 | 100 |
表10调光器件的结构及性能测试数据
器件结构 | 盒厚/微米 | 配向层类型 | 雾态雾度/% | 透过态雾度/% |
如图1 | 16 | 无 | 89.0 | 1.9 |
如图3 | 16 | TN型 | 87.0 | 1.5 |
如图3 | 16 | IPS型 | 87.0 | 1.4 |
如图1 | 20 | 无 | 90.5 | 2.0 |
实施例4
表11液晶组合物配方
表12调光器件的结构及性能测试数据
器件结构 | 盒厚/微米 | 配向层类型 | 雾态雾度/% | 透过态雾度/% |
如图1 | 16 | 无 | 90.5 | 1.8 |
如图3 | 16 | TN型 | 88.2 | 1.7 |
如图3 | 16 | IPS型 | 87.2 | 1.5 |
如图1 | 20 | 无 | 91.3 | 2.1 |
实施例5
表13液晶组合物配方
单体 | 比例/% |
2PPN | 4.9 |
5PPN | 14.0 |
5OPPN | 10.8 |
6OPPN | 5.1 |
3PP<sup>11</sup>PN | 10.8 |
5HPPN | 5.7 |
5PPPN | 2.7 |
R01 | 12.0 |
NPP11PPN | 5.0 |
NPP7PPN | 18.0 |
NPP9PPN | 11.0 |
总计 | 100 |
表14调光器件的结构及性能测试数据
实施例6
表15液晶组合物配方
单体 | 比例/% |
2PPN | 5.1 |
5PPN | 14.5 |
5OPPN | 11.2 |
6OPPN | 5.3 |
3PP<sup>11</sup>PN | 11.2 |
5HPPN | 5.9 |
3PP<sup>23</sup>TPO2 | 2.8 |
R01 | 16.0 |
NPP11PPN | 5.0 |
NPP7PPN | 18.0 |
NPP9PPN | 5.0 |
总计 | 100 |
表16调光器件的结构及性能测试数据
器件结构 | 盒厚/微米 | 配向层类型 | 雾态雾度/% | 透过态雾度/% |
如图1 | 16 | 无 | 90.4 | 4.7 |
如图3 | 16 | TN型 | 86.5 | 2.3 |
如图3 | 16 | IPS型 | 87.3 | 2.5 |
如图1 | 20 | 无 | 91.5 | 5.2 |
实施例7
表17液晶组合物配方
5PPPN | 2.8 |
R01 | 16.0 |
NPP11PPN | 5.0 |
NPP7PPN | 18.0 |
NPP9PPN | 5.0 |
总计 | 100 |
表18调光器件的结构及性能测试数据
器件结构 | 盒厚/微米 | 配向层类型 | 雾态雾度/% | 透过态雾度/% |
如图1 | 16 | 无 | 89.5 | 4.2 |
如图3 | 16 | TN型 | 86.7 | 2.3 |
如图3 | 16 | IPS型 | 87.2 | 2.1 |
如图1 | 20 | 无 | 90.8 | 5.3 |
实施例8
表19液晶组合物配方
单体 | 比例/% |
2PPN | 5.1 |
5PPN | 14.5 |
5OPPN | 11.2 |
6OPPN | 5.3 |
3PP<sup>11</sup>PN | 11.2 |
5HPPN | 2.8 |
2PP<sup>23</sup>P4 | 3.1 |
5PPPN | 2.8 |
R01 | 16.0 |
NPP11PPN | 5.0 |
NPP7PPN | 18.0 |
NPP9PPN | 5.0 |
总计 | 100 |
表20调光器件的结构及性能测试数据
器件结构 | 盒厚/微米 | 配向层类型 | 雾态雾度/% | 透过态雾度/% |
如图1 | 16 | 无 | 90.5 | 4.8 |
如图3 | 16 | TN型 | 88.5 | 2.0 |
如图3 | 16 | IPS型 | 87.9 | 1.9 |
如图1 | 20 | 无 | 91.6 | 4.5 |
实施例9
表21液晶组合物配方
单体 | 比例/% |
NPP7PPN | 25.0 |
L05 | 0.1 |
R01 | 19.0 |
NPPO5OPPN | 4.9 |
5PPN | 13.3 |
3PP<sup>11</sup>PN | 10.2 |
6OPPN | 4.8 |
2PPN | 4.5 |
5OPPN | 10.2 |
5HPPN | 5.4 |
5PPPN | 2.6 |
总计 | 100 |
表22调光器件的结构及性能测试数据
器件结构 | 盒厚/微米 | 配向层类型 | 雾态雾度/% | 透过态雾度/% |
如图1 | 16 | 无 | 86.7 | 2.5 |
实施例10
表23液晶组合物配方
表24调光器件的结构及性能测试数据
器件结构 | 盒厚/微米 | 配向层类型 | 雾态雾度/% | 透过态雾度/% |
如图1 | 16 | 无 | 85.7 | 9.1 |
如图3 | 16 | IPS型 | 80.2 | 2.3 |
实施例11
表25液晶组合物配方
单体 | 比例/% |
NPP7PPN | 27.0 |
R01 | 13.0 |
2PPN | 2.7 |
4PPN | 0.3 |
3OPPN | 1.2 |
5PPN | 23.4 |
5OPPN | 9.6 |
7PPN | 3.0 |
6OPPN | 2.4 |
8OPPN | 3.0 |
3PP<sup>11</sup>PN | 6.6 |
5HPPN | 4.8 |
5PPPN | 3.0 |
总计 | 100 |
表26调光器件的结构及性能测试数据
器件结构 | 盒厚/微米 | 配向层类型 | 雾态雾度/% | 透过态雾度/% |
如图1 | 16 | 无 | 88.9 | 11.8 |
如图3 | 16 | IPS型 | 81.7 | 2.9 |
实施例12
表27液晶混合物配方
表28调光器件的结构及性能测试数据
器件结构 | 盒厚/微米 | 配向层类型 | 雾态雾度/% | 透过态雾度/% |
如图1 | 16 | 无 | 90.7 | 6.2 |
实施例13
表29液晶组合物配方
单体 | 比例/% |
NPP7PPN | 20.0 |
R01 | 16.0 |
5PPN | 25.0 |
3PP<sup>11</sup>PN | 5.0 |
6OPPN | 3.0 |
2PPN | 3.0 |
5OPPN | 3.0 |
NPP5PPN | 5.0 |
NPP9PPN | 20.0 |
总计 | 100 |
表30调光器件的结构及性能测试数据
器件结构 | 盒厚/微米 | 配向层类型 | 雾态雾度/% | 透过态雾度/% |
如图1 | 16 | 无 | 92.4 | 14.2 |
实施例14
表31液晶组合物配方
表32调光器件的结构及性能测试数据
器件结构 | 盒厚/微米 | 配向层类型 | 雾态雾度/% | 透过态雾度/% |
如图1 | 16 | 无 | 90.5 | 5.5 |
如图3 | 16 | TN型 | 87.3 | 4.4 |
如图2 | 16 | IPS型 | 89.6 | 3.4 |
如图1 | 20 | 无 | 91.4 | 4.6 |
实施例15
表33液晶组合物配方
单体 | 比例/% |
2PPN | 4.9 |
5PPN | 14.0 |
5OPPN | 10.8 |
6OPPN | 5.1 |
3PP<sup>11</sup>PN | 10.8 |
5HPPN | 5.7 |
5PPPN | 2.7 |
R01 | 12.0 |
NP<sup>22</sup>P7PP<sup>21</sup>N | 5.0 |
NPP7PPN | 18.0 |
NPP9PPN | 11.0 |
总计 | 100 |
表34调光器件的结构及性能测试数据
实施例16
表35液晶组合物配方:
单体 | 比例/% |
NPP7PPN | 10.0 |
R01 | 15.9 |
5PPN | 20.1 |
3PP<sup>11</sup>PN | 10.7 |
6OPPN | 5.1 |
2PPN | 7.1 |
5OPPN | 6.0 |
5HPPN | 3.2 |
5PPPN | 1.5 |
NPP5PPN | 3.0 |
NPP9PPN | 16.9 |
PM001 | 0.5 |
总计 | 100 |
其中,将液晶组合物灌注完成后,用365nm的UV低压汞灯,将调光器件在10mw/cm2的强度下照射60秒,使液晶组合物中的可聚合单体PM001聚合。
表36调光器件的结构及性能测试数据
器件结构 | 盒厚/微米 | 配向层类型 | 雾态雾度/% | 透过态雾度/% |
如图1 | 16 | 无 | 86.2 | 4.5 |
如图3 | 16 | TN型 | 87.5 | 1.6 |
实施例17
表37液晶组合物配方:
其中,将液晶组合物灌注完成后,用365nm的UV低压汞灯,将调光器件在10mw/cm2的强度下照射60秒,使液晶组合物中的可聚合单体NOA65聚合。
表38调光器件的结构及性能测试数据
器件结构 | 盒厚/微米 | 配向层类型 | 雾态雾度/% | 透过态雾度/% |
如图1 | 16 | 无 | 87.8 | 1.9 |
如图3 | 16 | TN型 | 87.1 | 1.4 |
实施例18
表39液晶组合物配方
单体 | 比例/% |
NPP7PPN | 15.0 |
R01 | 16.0 |
5PPN | 14.0 |
3PP<sup>11</sup>PN | 10.8 |
6OPPN | 5.1 |
2PPN | 4.9 |
5OPPN | 5.4 |
5HPPN | 5.7 |
NPP9PPN | 15.0 |
2P<sup>21</sup>TPP3 | 2.7 |
4P<sup>21</sup>TPP3 | 5.4 |
总计 | 100 |
表40调光器件的结构及性能测试数据
器件结构 | 盒厚/微米 | 配向层类型 | 雾态雾度/% | 透过态雾度/% |
如图1 | 16 | 无 | 88.7 | 3.7 |
实施例19
表41液晶组合物配方
单体 | 比例/% |
NPP7PPN | 30.0 |
R01 | 16.0 |
5PPN | 13.8 |
3PP<sup>11</sup>PN | 10.8 |
6OPPN | 5.1 |
2PPN | 4.9 |
5OPPN | 10.8 |
5HPPN | 5.9 |
5PPPN | 2.7 |
总计 | 100 |
表42调光器件的结构及性能测试数据
器件结构 | 盒厚/微米 | 配向层类型 | 雾态雾度/% | 透过态雾度/% |
如图1 | 16 | 无 | 87.8 | 1.4 |
如图1 | 15 | 无 | 86.9 | 1.8 |
如图1 | 20 | 无 | 88.1 | 3.1 |
如图3 | 20 | STN型 | 90.2 | 1.6 |
如图1 | 50 | 无 | 94.5 | 10.8 |
如图3 | 50 | STN型 | 92.5 | 5.2 |
实施例20
表43液晶组合物配方
表44调光器件的结构及性能测试数据
器件结构 | 盒厚/微米 | 配向层类型 | 雾态雾度/% | 透过态雾度/% |
如图1 | 16 | 无 | 90.7 | 5.4 |
如图3 | 16 | TN型 | 87.2 | 3.4 |
如图2 | 16 | IPS型 | 89.4 | 3.8 |
如图1 | 20 | 无 | 91.2 | 5.2 |
通过以上实施例和对比例,可知由本发明的液晶组合物制成的调光器件明显具有较低的透过态雾度,同时具有超高的雾态雾度,从而在提供高透光率的同时还可提供足够的隐私隔离性。
尽管已经在上面以细节描述了数个示例性实施方案,但是所公开的实施方案仅是示例性而非限制性的,并且本领域技术人员将容易意识到,在示例性实施方案中很多其他修改、改动和/或替换是可能的,而不实质偏离本公开的新颖性教导和优点。因此,所有这些修改、改动和/或替换意图被包括在如所附权利要求书所限定的本公开的范围内。
Claims (8)
1.一种应用于调光器件的液晶组合物,其特征在于,所述液晶组合物包含:
至少一种选自通式I的化合物
R1-MG1-X-MG2-R2 I;
至少一种选自通式II和/或通式III的化合物
至少一种手性化合物,
其中,
R1和R2各自独立地表示-H、-Cl、-CN、-NCS、或者C原子数为1-25的链烷基,其中,所述链烷基中的一个或多个H原子可以各自独立地被卤素或CN取代,所述链烷基中的一个或多个不相邻的-CH2-可以各自独立地被-O-、-S-、-NH-、-N(CH3)-、-CO-、-COO-、-OCO-、-OCOO-、-SCO-、-COS-、-CH=CH-、-CH=CF-、-CF=CF-或-C≡C-替代,所述替代的方式不包含两个-O-彼此相邻;
MG1和MG2各自独立地表示介晶基元,所述介晶基元选自由通式IV的介晶基元组成的组
其中,H6、H7、H8、H9各自独立地表示环状结构,所述环状结构选自由 组成的组,其中所述环状结构中的1-4个H原子可以各自独立地被卤素、CN、或C原子数为1-7的链烷基取代,所述链烷基中的至少一个-CH2-可以被-CHO-、-CO-、-COO-或-OCO-替代,所述链烷基中的至少一个H原子可以被F或Cl取代;
B3、B4和B5各自独立地表示-OCOO-、-OCH2-、-CH2O-、-CF2O-、-(CH2)2-、-(CH2)4-、-C≡C-、-CH=CH-、-CF2CF2-、-CF=CF-、-CH=CH-COO-、-OCO-CH=CH-或单键;
p、q和r为0或1;
X选自由通式V的基团组成的组
其中,Y1和Y2各自独立地表示-O-、-CH=CH-、-CF2O-、-OCF2-、-CF2CF2-或单键,s为3至13的奇数;
B1和B2各自独立地表示-COO-、-OCO-、-C≡C-或单键;
A1、A2、A3、A4各自独立地表示-CN、-OCF3、-CF3或具有1-25个C原子的链烷基,所述链烷基中的一个或多个不相邻的-CH2-可以各自独立地被-O-、-COO-、-OCO-、或-CH=CH-替代;
k是1、2、3或4,m是0、1或2,n是1、2或3,o是1或2,且m+n+o不大于5;
所述通式I的化合物选自如下化合物组成的组:
2.如权利要求1所述的液晶组合物,其特征在于,所述液晶组合物还包括至少一种可聚合单体。
3.如权利要求2所述的液晶组合物,其特征在于,所述液晶组合物还包括至少一种聚合引发剂。
4.如权利要求1-3中任一项所述的液晶组合物,其特征在于,所述通式I的化合物占所述液晶组合物总质量的1%-90%。
5.如权利要求1-3中任一项所述的液晶组合物,所述通式I的化合物占所述液晶组合物总质量的10%-50%。
6.一种包含如权利要求1-3中任一项所述的液晶组合物的调光器件,所述调光器件包含两个稳定状态:使入射光基本上透射的透过态,以及使入射光基本上散射的雾态,所述透过态和所述雾态之间的转换可通过施加外部电场实现。
7.如权利要求6所述的调光器件,所述透过态的雾度不大于15%。
8.如权利要求6所述的调光器件,所述雾态的雾度不小于80%。
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