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1. 发明申请

WO2018213750A1 ACHROMATIC LIQUID CRYSTAL LENS WITH A CHIRAL NEMATIC LIQUID CRYSTAL 审中-公开
公开(公告)号：WO2018213750A1
公开(公告)日：2018-11-22
申请号：PCT/US2018/033459
申请日：2018-05-18
申请人： KENT STATE UNIVERSITY , CHIEN, Liang-Chy , CHANG, Kai-Han , VARANYTSIA, Andrii
发明人： CHIEN, Liang-Chy , CHANG, Kai-Han , VARANYTSIA, Andrii
IPC分类号： G02F1/1362 , G02F1/1345
摘要： Liquid crystal lenses of different apertures with suppressed chromatic aberration utilizing twisted vertical alignment configuration are demonstrated. A plurality of substrates are provided with electrodes, including a patterned electrode to generate a lens effect. The liquid crystal material is homeotropically aligned, such as via alignment layers. Setting the ratio between cell thickness and chiral pitch of the cholesteric liquid crystals provides correction of axial chromatic aberrations of electrically-tunable focal lengths in the device.

2. 发明申请

WO2017172578A1 FAST-SWITCHING POLYMER STABILIZED CHIRAL HOMEOTROPIC LIQUID CRYSTAL DEVICES AND METHODS 审中-公开
标题翻译：快速切换聚合物稳定手性等向性液晶装置和方法
公开(公告)号：WO2017172578A1
公开(公告)日：2017-10-05
申请号：PCT/US2017/024246
申请日：2017-03-27
申请人： KENT STATE UNIVERSITY , CHIEN, Liang-Chy , CHANG, Kai-Han
发明人： CHIEN, Liang-Chy , CHANG, Kai-Han
IPC分类号： C09K19/42 , C09K19/04 , C09K19/36 , C09K19/38 , C09K19/58
CPC分类号： C09K19/588 , C09K19/02 , C09K19/42 , C09K19/56 , C09K19/58 , C09K19/586 , C09K2019/548
摘要： Fast-switching polymer stabilized chiral homeotropic (PSCH) liquid crystal devices and methods of producing such devices are provided. The structure of this invention comprises a pair of glass substrates sputtered with transparent conductive layer and coated with homeotropic alignment layer. A cholesteric liquid crystal mixture doped with a small amount of reactive monomer is sandwiched between the substrates. By polymerizing the reactive monomer molecules between or on the substrates surface to form a predetermined polymer network, optical bounce and defect-annihilation process during switching are suppressed, and liquid crystal electro-optical devices with fast response time are achieved.
摘要翻译：提供了快速切换聚合物稳定的手性垂直（PSCH）液晶装置和生产这种装置的方法。本发明的结构包括一对用透明导电层溅射并涂有垂直排列层的玻璃基片。掺杂有少量反应性单体的胆甾醇型液晶混合物夹在基板之间。通过在基板表面之间或基板表面上聚合反应性单体分子以形成预定的聚合物网络，抑制了开关期间的光反弹和缺陷湮没过程，并且实现了具有快速响应时间的液晶电光器件。

3. 发明申请

WO2014210165A2 POLYMER-DISPERSED BLUE-PHASE LIQUID CRYSTAL FILMS 审中-公开
标题翻译：聚合物分散蓝相液晶薄膜
公开(公告)号：WO2014210165A2
公开(公告)日：2014-12-31
申请号：PCT/US2014/044112
申请日：2014-06-25
申请人： KENT STATE UNIVERSITY , CHIEN, Liang-Chy , HWANG, Jeoung-Yeon , KEMIKLIOGLU, Emine
发明人： CHIEN, Liang-Chy , HWANG, Jeoung-Yeon , KEMIKLIOGLU, Emine
IPC分类号： H01L31/0256
CPC分类号： C09K19/0275 , C09K19/544 , G02F1/1334 , G02F2001/13793
摘要： A polymer-dispersed blue-phase (PDBP) liquid crystal film is formed from a polymer-based latex and blue-phase liquid crystals that are combined using an emulsification process or a polymerization-induced phase separation process. The resultant PDBP liquid crystal film includes droplets formed by the polymer-based latex that encapsulate the blue-phase liquid crystals therein, so as to allow the blue-phase liquid crystals to have a blue phase at room temperature. As such, the PDBP liquid crystal film is conducive for use in manufacturing processes, such as LCD (liquid crystal display) manufacturing processes, while providing desirable optical features, such as field-induced birefringence at low switching voltages.
摘要翻译：聚合物分散蓝相（PDBP）液晶膜由使用乳化法或聚合引发的相分离方法结合的聚合物基胶乳和蓝相液晶形成。所得到的PDBP液晶膜包括由其中包封蓝相液晶的基于聚合物的胶乳形成的液滴，以使蓝相液晶在室温下具有蓝相。因此，PDBP液晶膜有利于在诸如LCD（液晶显示）制造工艺的制造工艺中使用，同时提供所需的光学特征，例如在低开关电压下的场致双折射。

4. 发明申请

WO2005072460A2 ELECTRO-OPTICAL DEVICES FROM POLYMER-STABILIZED LIQUID CRYSTAL MOLECULES 审中-公开
标题翻译：聚合物稳定液晶分子的电光器件
公开(公告)号：WO2005072460A2
公开(公告)日：2005-08-11
申请号：PCT/US2005/003410
申请日：2005-01-28
申请人： KENT STATE UNIVERSITY , ECSIBEO AB , KOMITOV, Lachezar , CHIEN, Liang-Chy , KIM, Sang, Hwa
发明人： KOMITOV, Lachezar , CHIEN, Liang-Chy , KIM, Sang, Hwa
IPC分类号： G02F1/1333 , G02F1/137
CPC分类号： G02F1/13718 , G02F2001/13775
摘要： An electro-optic device includes a liquid crystal cell (10, 10') and at least one electrode (40, 42, 40', 42') arranged to selectively electrically bias the liquid crystal cell (10, 10'). A chiral or cholesteric liquid crystal (30, 30') is disposed in the liquid crystal cell (10,10'). The liquid crystal (10,10') has an optic axis substantially along a selected optic axis direction in the absence of an electrical bias. A polymeric network (32, 32', 72) is disposed at an inside surface of the liquid crystal cell (10, 10'). The polymeric network (32, 32', 72) extends partway into the liquid crystal cell (10, 10') leaving at least a portion of the liquid crystal cell (10, 10') substantially free of the polymeric network (32, 32', 72).
摘要翻译：电光器件包括液晶单元（10,10'）和至少一个电极（40,42,40'，42'），其布置成选择性地电偏置液晶单元（10,10'）。在液晶单元（10,10'）中设置手性或胆甾型液晶（30,30'）。在没有电偏压的情况下，液晶（10,10'）具有基本沿着所选择的光轴方向的光轴。聚合物网络（32,32'，72）设置在液晶单元（10,10'）的内表面。聚合物网络（32,32'，72）在中途延伸到液晶单元（10,10'）中，使至少一部分液晶单元（10,10'）基本上不含聚合物网络（32,32） '，72）。

5. 发明申请

WO2002034861A3 ELECTRO-OPTICAL DEVICES FROM BANANA-SHAPED LIQUID CRYSTALS 审中-公开
公开(公告)号：WO2002034861A3
公开(公告)日：2002-05-02
申请号：PCT/US2001/048021
申请日：2001-10-26
申请人： KENT STATE UNIVERSITY , JAKLI, Antal , CHIEN, Liang-Chy , KRUERKE, Daniel , SAWADE, Hans , HEPPKE, Gerd
发明人： JAKLI, Antal , CHIEN, Liang-Chy , KRUERKE, Daniel , SAWADE, Hans , HEPPKE, Gerd
IPC分类号： C09K19/02
摘要： A liquid crystal device comprising tilted smectic phases of banana-shaped liquid crystal molecules is disclosed. A method for fabricating a light modulating device is also disclosed. The method comprises the steps of providing a pair of substrates with a cell gap therebetween and permanently disposing at least one banana-shaped liquid crystal material into said cell gap. The present invention also provides a method of generating an image, comprising providing a pair of substrates with a cell gap therebetween, providing transparent electrodes on each of the substrates adjacent to the cell gap, disposing at least one banana-shaped liquid crystal material into the cell gap; and applying an electric field across the electrodes. The tilted smectic phases of banana-shaped liquid crystal may be in either a racemic or a chiral state. The application of a sufficiently high electric field transitions the banana-shaped liquid crystal material between the racemic and chiral states, and both the racemic and the chiral states are stable in the absence of an electric field.

6. 发明申请

WO2011102892A1 FAST-SWITCHING SURFACE-STABILIZED LIQUID CRYSTAL CELLS 审中-公开
标题翻译：快速切换表面稳定液晶细胞
公开(公告)号：WO2011102892A1
公开(公告)日：2011-08-25
申请号：PCT/US2011/000275
申请日：2011-02-15
申请人： KENT STATE UNIVERSITY , CHIEN, Liang-Chy , BORSHCH, Volodymyr , HWANG, Jeoung-Yeon
发明人： CHIEN, Liang-Chy , BORSHCH, Volodymyr , HWANG, Jeoung-Yeon
IPC分类号： C09K19/02 , G02F1/133
CPC分类号： C09K19/2007 , B32B2457/202 , C09K19/02 , C09K2019/0448 , C09K2019/548 , G02F1/133707 , G02F1/133711 , G02F2001/133776 , G02F2202/36 , Y10T428/10 , Y10T428/1023 , Y10T428/105
摘要： A surface polymer-assisted vertically aligned (SPA-VA) liquid crystal (LC) cell has a surface alignment layer of surface localized polymer nano spikes capable of controlling the pretilt angle of liquid crystal molecules and ensuring fast switching characteristics. The deposition of the polymer nanospikes as a part of the alignment layer is achieved by polymerizing a small amount of a reactive monomer in vertically aligned liquid crystal with or without an applied voltage. Due to the alignment of liquid crystal molecules by the surface alignment layers, the polymerized polymer acts as an internal surface to modify and control the field-induced reorientation of the liquid crystal molecules. The SPA-VA LC cell realizes a stable alignment and the considerable advantage of the formation of polymer spikes via UV irradiation on both substrates of the cell. Furthermore, the switch-off of a SPA-VA is fast due to the enhanced surface anchoring strength by the surface-localized polymer nano spikes.
摘要翻译：表面聚合物辅助垂直取向（SPA-VA）液晶（LC）单元具有能够控制液晶分子的预倾角并确保快速切换特性的表面局部聚合物纳米尖峰的表面取向层。作为取向层的一部分，聚合物纳米球的沉积是通过在施加或不施加电压的情况下将垂直取向的液晶中的少量反应性单体聚合而实现的。由于通过表面取向层对液晶分子进行取向，所以聚合的聚合物充当内部表面，以改变和控制液晶分子的场诱导重定向。 SPA-VA LC细胞实现了稳定的对准，并且通过UV照射在细胞的两个底物上形成聚合物尖峰的相当大的优点。此外，SPA-VA的关闭是快速的，这是由于表面定位的聚合物纳米尖峰增强了表面锚固强度。

7. 发明申请

WO2004104682A1 METHOD OF PLASMA BEAM BOMBARDMENT OF ALIGNING FILMS FOR LIQUID CRYSTALS 审中-公开
标题翻译：用于液晶的等离子体束波束形成方法
公开(公告)号：WO2004104682A1
公开(公告)日：2004-12-02
申请号：PCT/US2004/015411
申请日：2004-05-17
申请人： KENT STATE UNIVERSITY , CHIEN, Liang-Chy , DOBROVOLSKYY, Andriy , YAROSHCHUK, Oleg , LAURENTOVICH, Oleg
发明人： CHIEN, Liang-Chy , DOBROVOLSKYY, Andriy , YAROSHCHUK, Oleg , LAURENTOVICH, Oleg
IPC分类号： G02F1/1337
CPC分类号： G02F1/13378 , G02F1/132 , G02F1/133711
摘要： Methods for treating aligning substrates produces uniform alignment of liquid crystals in at least two modes. The method is based on the treatment of liquid crystal aligning substrates with a collimated or partially collimated plasma beam. In one embodiment, the method comprises a step of bombarding an aligning substrate with at least one plasma beam from a plasma beam source at a designated incident angle to align the atomic/molecular structure or the surface profile of the aligning substrate in at least one aligned direction.
摘要翻译：用于处理对准衬底的方法产生至少两种模式的液晶的均匀排列。该方法基于用准直或部分准直等离子体束处理液晶对准衬底。在一个实施例中，该方法包括以指定的入射角用来自等离子体束源的至少一个等离子体束轰击对准衬底的步骤，以使对准衬底的原子/分子结构或表面轮廓在至少一个对准方向。

8. 发明申请

WO2004104656A1 A METHOD OF MAKING OPTICAL COMPENSATION FILM USING POLYMER STABILIZATION TECHNIQUE 审中-公开
标题翻译：使用聚合物稳定化技术制备光学补偿膜的方法
公开(公告)号：WO2004104656A1
公开(公告)日：2004-12-02
申请号：PCT/US2004/014646
申请日：2004-05-10
申请人： KENT STATE UNIVERSITY , CHIEN, Liang-Chy , DOI, Toru
发明人： CHIEN, Liang-Chy , DOI, Toru
IPC分类号： G02B5/30
CPC分类号： G02F1/133632 , G02B5/3016 , G02F2413/105 , Y10T428/10 , Y10T428/1036
摘要： The present invention provides a method of preparation of optical compensation films using a polymer stabilization technique so as to enable continuous roll-to-roll production. The films can be applied for reflective liquid crystal displays. They are prepared by photo-polymerizing a mixture comprising a reactive monomer (or mixture of monomers), a small amount of photoinitiator and liquid crystal. The concentration of the reactive monomer (mesogenic or non-mesogenic) in the reactive mixtures can be as low as 5% or as high as 99% by weight. The materials that can function as the optical compensation films in the present invention include, but are not limited to, mixtures of liquid crystal and reactive mesogenic monomers (rod-like, bent-shaped, and disc-like mesogenic monomers) containing polymerizable groups (monofunctionaly or multifunctional) selected from acrylate, methacrylate, vinyls, butadiene, vinyl ethers, or epoxide.
摘要翻译：本发明提供了使用聚合物稳定化技术制备光学补偿膜的方法，以便能够连续地进行卷对卷生产。该膜可用于反射型液晶显示器。它们通过光聚合包含反应性单体（或单体混合物），少量光引发剂和液晶的混合物制备。反应性混合物中反应性单体（介晶或非介晶）的浓度可以低至5重量％或高达99重量％。可以用作本发明的光学补偿膜的材料包括但不限于含有可聚合基团的液晶和反应性介晶单体（棒状，弯曲形和盘状介晶单体）的混合物（单官能或多功能），其选自丙烯酸酯，甲基丙烯酸酯，乙烯基，丁二烯，乙烯基醚或环氧化物。

9. 发明申请

WO2017205449A1 BRIGHTNESS ENHANCEMENT FILM OR CELL WITH QUANTUM-CONFINED SEMICONDUCTOR NANOPARTICLES IN POLYMER DISPERSED LIQUID CRYSTAL 审中-公开
标题翻译：量子限制型半导体纳米粒子在聚合物分散液晶中的亮度增强膜或电池
公开(公告)号：WO2017205449A1
公开(公告)日：2017-11-30
申请号：PCT/US2017/034136
申请日：2017-05-24
申请人： KENT STATE UNIVERSITY , CHIEN, Liang-Chy , GANDHI, Sahil Sandesh , JOSHI, Vinay
发明人： CHIEN, Liang-Chy , GANDHI, Sahil Sandesh , JOSHI, Vinay
IPC分类号： C09K19/58 , B82Y15/00 , C09K19/38 , G02F1/13 , G02F1/1334
CPC分类号： C09K19/58 , B82Y15/00 , C09K19/38 , C09K19/544 , C09K2019/521 , G02F1/133504 , G02F2001/133507 , G02F2202/36
摘要： A brightness enhancing film includes a nanostructured polymer dispersed liquid crystal film having quantum-confined semiconductor nanoparticles dispersed throughout. The film may be associated with at least one substrate, wherein the film is disposed on the at least one substrate which may have a micrograting is disposed adjacent the film. The nanoparticles may be in the form of quantum dots, quantum rods or photonic nanocrystals.
摘要翻译：增亮膜包括纳米结构聚合物分散液晶膜，其中分散有量子限制的半导体纳米粒子。所述膜可以与至少一个基板相关联，其中所述膜布置在所述至少一个基板上，所述至少一个基板可以具有微格栅，所述基板设置在所述膜附近。纳米粒子可以是量子点，量子棒或光子纳米晶体的形式。

10. 发明申请

WO1992019695A2 CRYSTALLINE LIGHT MODULATING DEVICE AND MATERIAL 审中-公开
标题翻译：晶体光调制器件和材料
公开(公告)号：WO1992019695A2
公开(公告)日：1992-11-12
申请号：PCT/US1992003504
申请日：1992-04-28
申请人： KENT STATE UNIVERSITY
发明人： KENT STATE UNIVERSITY , DOANE, William, J. , YANG, Deng-Ke , CHIEN, Liang-Chy
IPC分类号： C09K19/56
CPC分类号： G02F1/13718 , C09K19/02 , C09K19/542 , C09K19/544 , C09K19/586 , G02F1/0131 , G02F2001/13345 , G02F2001/13347 , G02F2001/13775
摘要： A new liquid crystalline light modulating cell and material are characterized by phase-separated polydomains of polymer networks dispersed in chiral nematic liquid crystal having positive dielectric anisotropy, the polymer being present in an amount less than 10 % by weight of the total weight of the material and, preferably, being cross-linked. The liquid crystal in the vicinity of the polydomains is less responsive to an applied field than surrounding regions of liquid crystal, whereby the new material exhibits different optical states in response to different field conditions. In one embodiment, the material is light scattering in a field-OFF condition and optically clear in a field-ON condition, while in another embodiment, the new material is optically clear in a field-OFF condition and light scattering in a filed-ON condition. In still another embodiment, the new material exhibits stability at zero field in both a colored, light reflecting state and a light scattering state, as well as being optically clear in the presence of a field.
摘要翻译：新的液晶光调节电池和材料的特征在于分散在具有正介电各向异性的手性向列型液晶中的聚合物网络的相分离多畴，该聚合物的存在量小于材料总重量的10重量％并且优选地是交联的。多晶畴附近的液晶比外围区域对液晶的应用场响应较小，由此新材料响应于不同的场条件而表现出不同的光学状态。在一个实施例中，该材料是在场关断状态下的光散射并且在场接通条件下是光学透明的，而在另一个实施例中，新材料在场关闭状态下是光学透明的，并且在场中的光散射条件。在另一个实施方案中，新材料在彩色光反射状态和光散射状态下在零场中表现出稳定性，并且在场的存在下在光学上是透明的。

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