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公开(公告)号：US20210040389A1
公开(公告)日：2021-02-11
申请号：US16987822
申请日：2020-08-07
发明人： Maksym Fedorovich Prodanov , Valerii Vladimirovich Vashchenko , Abhishek Kumar Srivastava , Swadesh Kumar Gupta , Chengbin Kang , Maksym Diakov
摘要： A nanoparticle film is disclosed. The nanoparticle film comprises a plurality of polymerized liquid crystal monomers having an axis of alignment, and a plurality of nanoparticles disposed in the polymerized liquid crystal monomers. Each of the nanoparticles has a surface modified by a plurality of first ligands and a long axis aligned with the axis of alignment through the plurality of first ligands.
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公开(公告)号：US10816855B2
公开(公告)日：2020-10-27
申请号：US15785723
申请日：2017-10-17
IPC分类号： G02F1/1337 , B05D3/06 , B05D1/00
摘要： A composite photoalignment layer for aligning liquid crystal molecules includes: a monomeric material; a photoinitiator or a thermal initiator; and an azo dye material. A method for preparing a composite photoalignment layer for aligning liquid crystal molecules includes: mixing, in solution form, a monomeric material, a photoinitiator or a thermal initiator, and an azo dye material; coating the mixed solution onto a substrate to form a thin film; exposing the thin film to polarized light; and, with a thermal initiator, heating the thin film to polymerize the monomeric material and form a solid thin film.
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公开(公告)号：US09946133B2
公开(公告)日：2018-04-17
申请号：US15066227
申请日：2016-03-10
IPC分类号： G02F1/139 , G09G3/36 , G02F1/1335 , G02F1/1337 , G02F1/141 , G02F1/137 , G02F1/133
CPC分类号： G02F1/1396 , G02F1/13306 , G02F1/133528 , G02F1/1337 , G02F1/13781 , G02F1/141 , G02F2001/133622 , G09G3/36 , G09G2300/0404 , G09G2310/0235
摘要： An electrically suppressed helix (ESH) ferroelectric liquid crystal (FLC) display cell with fast response includes: a liquid crystal layer, disposed between two transparent substrates, wherein helix pitch of chiral smectic liquid crystals of the liquid crystal layer is less than the thickness of the liquid crystal layer; at least one polarizer; and a voltage source, configured to apply electrical driving voltage pulses to electrodes of the display cell with amplitude greater than a critical voltage for helix unwinding of the chiral smectic liquid crystals.
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公开(公告)号：US12019345B2
公开(公告)日：2024-06-25
申请号：US18004571
申请日：2021-09-10
IPC分类号： G02F1/1335 , G02F1/13363 , G02F1/141
CPC分类号： G02F1/141 , G02F1/133541 , G02F1/133638
摘要： One or more devices, systems, methods and/or apparatus to facilitate suppression of fringe field effect, such as for diffraction grating and/or display purposes. In one embodiment, a ferroelectric liquid crystal (FLC) element can comprise a pair of conductive substrates, a FLC layer having a helical pitch and positioned between the conductive substrates, one or more spacers fixedly positioned between the conductive substrates, and an alignment layer positioned between the FLC layer and one of the conductive substrates. The alignment layer can be disposed at least partially contiguous with the FLC layer. The FLC layer can comprise a chiral smectic C* liquid crystal layer having at least one of a helical pitch smaller than an average cell gap of the FLC layer, or an average helical pitch of the FLC layer being smaller than an average thickness of the FLC layer between the conductive substrates.
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公开(公告)号：US20230244102A1
公开(公告)日：2023-08-03
申请号：US18004571
申请日：2021-09-10
IPC分类号： G02F1/1335 , G02F1/141 , G02F1/13363
CPC分类号： G02F1/133541 , G02F1/141 , G02F1/133638
摘要： One or more devices, systems, methods and/or apparatus to facilitate suppression of fringe field effect, such as for diffraction grating and/or display purposes. In one embodiment, a ferroelectric liquid crystal (FLC) element can comprise a pair of conductive substrates, a FLC layer having a helical pitch and positioned between the conductive substrates, one or more spacers fixedly positioned between the conductive substrates, and an alignment layer positioned between the FLC layer and one of the conductive substrates. The alignment layer can be disposed at least partially contiguous with the FLC layer. The FLC layer can comprise a chiral smectic C* liquid crystal layer having at least one of a helical pitch smaller than an average cell gap of the FLC layer, or an average helical pitch of the FLC layer being smaller than an average thickness of the FLC layer between the conductive substrates.
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公开(公告)号：US11015120B2
公开(公告)日：2021-05-25
申请号：US15884102
申请日：2018-01-30
发明人： Valerii Vladimirovich Vashchenko , Evgenii Pavlovich Pozhidaev , Abhishek Kumar Srivastava , Vladimir Grigorievich Chigrinov , Hoi Sing Kwok
摘要： A low birefringence ferroelectric liquid crystal (FLC) mixture composed of at least two components shows birefringence in the range 0.05 to 0.14, which is suitable for the modern display and photonic devices. The cell gap can be tuned from 1.5 μm to 4 μm to reduces the fabrication complexity and chromatic distortion by electro-optical modulation. The FLC mixtures can be employed in a wide temperature range. The characteristics of the said FLC mixture can be tuned by tuning the concentration of the constituents of the mixture. The helical pitch of the FLC mixtures can be varied from 100 nm to 10 μm. A smectic tilt angle can be varied between 17° to 45° and the spontaneous polarization can be tuned over a wide range to meet requirements of different electro-optical modes, and the FLC mixture is applicable for a wide variety of electro-optical effects.
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公开(公告)号：US20160187730A1
公开(公告)日：2016-06-30
申请号：US14951897
申请日：2015-11-25
发明人： Tao Du , Abhishek Kumar Srivastava , Valerii Vladimirovich Vashchenko , Vladimir Grigorievich Chigrinov , Hoi-Sing Kwok
IPC分类号： G02F1/1337
CPC分类号： G02F1/133711 , B32B2457/202 , G02F1/133788 , G02F2001/133726 , G02F2202/36 , H01L31/0352 , H01L31/035227 , Y10T428/1005 , Y10T428/1023 , Y10T428/1036 , Y10T428/1041
摘要： A polymer film with aligned geometrically anisotropic nanostructures includes: an alignment layer; and a mixture of liquid crystal polymer and geometrically anisotropic nanostructures. Methods for aligning geometrically anisotropic nanostructures and for optically manipulating geometrically anisotropic nanostructures are also provided.
摘要翻译： 具有对准的几何各向异性纳米结构的聚合物膜包括：取向层; 以及液晶聚合物和几何各向异性纳米结构的混合物。 还提供了用于对准几何各向异性纳米结构和用于光学操纵几何各向异性纳米结构的方法。
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公开(公告)号：US12023946B2
公开(公告)日：2024-07-02
申请号：US17119183
申请日：2020-12-11
发明人： Swadesh Kumar Gupta , Maksym Fedorovich Prodanov , Valerii Vladimirovich Vashchenko , Abhishek Kumar Srivastava , Chengbin Kang , Yiyang Gao
IPC分类号： B41M5/00 , C09D11/037 , C09D11/107 , C09D11/322 , C09D11/50 , C09K11/02 , G02F1/13357 , G02F1/1362
CPC分类号： B41M5/0017 , C09D11/037 , C09D11/107 , C09D11/322 , C09D11/50 , C09K11/025 , G02F1/133617 , G02F1/136222
摘要： Various photo-luminescent films and associated methods are enabled. For instance, a photo-luminescent film comprises a substrate layer comprising a plurality of pores, and a composite comprising luminescent nanoparticles disposed in the plurality of pores.
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公开(公告)号：US09933685B2
公开(公告)日：2018-04-03
申请号：US14452190
申请日：2014-08-05
IPC分类号： G02F1/141 , G02F1/29 , G02F1/1337 , G02F1/1335
CPC分类号： G02F1/29 , G02F1/133528 , G02F1/1337 , G02F1/133753 , G02F1/133788 , G02F1/141 , G02F2001/1414 , G02F2001/294
摘要： A liquid crystal Fresnel lens is provided. The liquid crystal Fresnel lens includes a liquid crystal cell and two polarizers. The liquid crystal cell includes: two transparent substrates having conducting layers disposed thereon with alignment layers, wherein an alignment pattern formed by the alignment layers are configured to provide multiple alignment domains in a Fresnel zones pattern, and wherein an easy axis of adjacent alignment domains are oriented at an angle relative to one another; and a ferroelectric liquid crystal layer disposed between the two transparent substrates, wherein the ferroelectric liquid crystal layer has a planar surface orientation and smectic layers perpendicular to the two transparent substrates. The liquid crystal cell is disposed between the two polarizers.
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公开(公告)号：US20160187691A1
公开(公告)日：2016-06-30
申请号：US15066227
申请日：2016-03-10
IPC分类号： G02F1/139 , G02F1/137 , G02F1/141 , G02F1/1335 , G02F1/1337
CPC分类号： G02F1/1396 , G02F1/13306 , G02F1/133528 , G02F1/1337 , G02F1/13781 , G02F1/141 , G02F2001/133622 , G09G3/36 , G09G2300/0404 , G09G2310/0235
摘要： An electrically suppressed helix (ESH) ferroelectric liquid crystal (FLC) display cell with fast response includes: a liquid crystal layer, disposed between two transparent substrates, wherein helix pitch of chiral smectic liquid crystals of the liquid crystal layer is less than the thickness of the liquid crystal layer; at least one polarizer; and a voltage source, configured to apply electrical driving voltage pulses to electrodes of the display cell with amplitude greater than a critical voltage for helix unwinding of the chiral smectic liquid crystals.
摘要翻译： 具有快速响应的电抑制螺旋（ESH）铁电液晶（FLC）显示单元包括：液晶层，设置在两个透明基板之间，其中液晶层的手性近晶液晶的螺旋间距小于 液晶层; 至少一个偏振片; 以及电压源，其被配置为向所述显示单元的电极施加电驱动电压脉冲，其幅度大于所述手性近晶液晶的螺旋解卷的临界电压。
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