Containing Nonsteryl Liquid Crystalline Compound Of Specified Structure Patents (Class 252/299.6)
-
Patent number: 11920075Abstract: The present invention relates to a liquid-crystalline medium (LC medium), to the use thereof for electro-optical purposes, and to LC displays containing this medium.Type: GrantFiled: December 17, 2019Date of Patent: March 5, 2024Assignee: MERCK PATENT GMBHInventors: Harald Hirschmann, Andreas Pohle, Christian Hock, Martina Windhorst, Sabine Schoen
-
Patent number: 11739267Abstract: LC media and LC displays containing an LC medium with positive dielectric anisotropy, which contains one or more compounds of formula I in a concentration of >0 and ?10% and displays addressed by an active matrix and in particular displays of the IPS, PS-IPS, FFS, PS-FFS, HB-FFS, U-IPS, TN, PS-TN, STN or TN-TFT mode.Type: GrantFiled: June 26, 2020Date of Patent: August 29, 2023Assignee: MERCK PATENT GMBHInventors: Yeon-Jeong Han, Dong-Hyun Kim, Heui-Seok Jin, Chang-Suk Choi
-
Patent number: 11634640Abstract: A liquid crystal composition includes at least one compound of general formula I, at least one compound of general formula II and at least one compound of general formula III. The liquid crystal composition has a higher optical anisotropy, the relatively large elastic constants K11 and K33 while maintaining a relatively high clearing point, an appropriate dielectric anisotropy and a better low-temperature intersolubility. A liquid crystal display device which includes the liquid crystal composition has advantages of a fast response, a high contrast and a wide temperature range, thereby having a good display effect and a large range of applicability.Type: GrantFiled: September 25, 2018Date of Patent: April 25, 2023Assignee: Jiangsu Hecheng Display Technology Co., Ltd.Inventors: Li Wang, Haibing Xu, Pengfei Li, Di He, Rui Jin
-
Patent number: 11629291Abstract: A liquid crystal composition contains: at least one compound of general formula I and at least one polymerizable compound of general formula II. Such a liquid crystal composition has a suitable optical anisotropy, a suitable dielectric anisotropy, and a better pretilt angle consistency while maintaining a relatively high clearing point, and the drop mura is good. When the liquid crystal composition is applied to a PSA liquid crystal display, the liquid crystal composition has an excellent display effect.Type: GrantFiled: June 28, 2018Date of Patent: April 18, 2023Assignee: Jiangsu Hecheng Display Technology Co., Ltd.Inventors: Wenyang Ma, Liwei Wang, Haibin Xu, Wenming Han, Wenqi Zhang
-
Birefringent liquid crystal composition comprising alkylsulfanylaryl isothiocyanato tolane compounds
Patent number: 11279878Abstract: The present invention relates to an optical article comprising a birefringent liquid crystal composition, said composition comprising more than 30% by weight based on the total weight of the composition of tolane compounds of formula R—S—Z1-A-Z2—NCS, in which R is a substituted or unsubstituted, linear or branched alkyl group, Z1 and Z2 are aryl groups, and A is an ethynyl group, an arylethynyl group or an ethynylarylethynyl group.Type: GrantFiled: December 21, 2015Date of Patent: March 22, 2022Assignees: Essilor International, Nikon CorporationInventors: Przemyslaw Kula, Jakub Herman -
Patent number: 11174342Abstract: The present invention relates to a pellet of a liquid crystal polyester resin composition, including a liquid crystal polyester resin (A) and an inorganic filler (B), in which the pellet has voids with a sphere equivalent diameter of 10 ?m to 1000 ?m, an abundance ratio of voids having a sphere equivalent diameter of less than 400 ?m in a total amount of the voids is in a range of 40% to 90%, and an average number of the voids in one pellet having a length of 1 mm to 5 mm and a maximum diameter of 1 mm to 3 mm is in a range of 4 to 9.Type: GrantFiled: March 13, 2020Date of Patent: November 16, 2021Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Tomoyuki Hara, Masanobu Uonami, Yoshio Shoda
-
Patent number: 11155753Abstract: There is provided a liquid crystal composition which has favorable characteristics and excellent characteristic balance as a material for an element used for phase control of an electromagnetic wave signal with a frequency of 1 MHz to 400 THz.Type: GrantFiled: October 21, 2019Date of Patent: October 26, 2021Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Norio Tamura, Yoichi Uriu, Eiji Okabe, Koki Sago
-
Patent number: 11149203Abstract: Described herein are liquid crystal compositions containing a five-member heterocyclic ring that can allow for the adjustment of their refractive indices under the application of an electric field. In addition, selectively dimmable reverse-mode polymer dispersed liquid crystal elements and devices using the aforementioned compositions are also described, which are transparent when no voltage is applied and opaque when a voltage is applied.Type: GrantFiled: February 14, 2018Date of Patent: October 19, 2021Assignee: NITTO DENKO CORPORATIONInventors: Sazzadur Rahman Khan, Hiep Luu
-
Patent number: 11027476Abstract: A multiple screw extruder (50) combines application of vacuum to a vacuum vent (62) positioned between material feed locations (70, 72) of the extruder and use of specially configured extruder screws (58) to extract gases, primarily air, out of the extruder to densify the materials introduced into it and to extract unwanted fluid from material introduced for mixture with molten polymeric material flowing through the extruder. The multiple screw extruder is operationally versatile in that it is capable of carrying out the material densification and fluid extraction processes either separately or simultaneously. Implementation of the disclosed vacuum feed technology provides an increase in rate of extrudate throughput as compared with that achievable by implementation of atmospheric venting (16) in a conventionally configured extruder (10a, 10b).Type: GrantFiled: March 26, 2019Date of Patent: June 8, 2021Assignee: Entek Manufacturing LLCInventors: Colt Aaron McDaniel, Dean Justin Elliott, Craig Allen Benjamin
-
Patent number: 10994999Abstract: Disclosed herein is an agricultural composition for facilitating treatment of a plant, in accordance with some embodiments. Accordingly, the agricultural composition may include carbanions and a diluting agent. Further, a carbanion of the carbanions may include a carbon atom. Further, the carbon atom may include a formal charge of ?1. Further, the diluting agent may be capable of dissolving the carbanions for forming a solution. Further, the dissolving of the carbanions may include diluting the carbanions. Further, a ratio of the diluting agent to the carbanions by volume ranges from 50:1 to 550:1. Further, the dissolving facilitates at least one application of the solution to the plant.Type: GrantFiled: December 8, 2020Date of Patent: May 4, 2021Inventor: Donald Richard Wilshe
-
Patent number: 10988692Abstract: The invention relates to a medium comprising at least 60% of one or more compounds of formula I wherein R11, R12, MG11, MG12 and Sp1 have the meaning given herein below, to the use of such media in liquid crystal devices, in particular in flexoelectric liquid crystal devices, and to a flexoelectric liquid crystal device comprising a liquid crystal medium according to the present invention.Type: GrantFiled: November 18, 2016Date of Patent: April 27, 2021Assignee: Merck Patent GmbHInventors: Simon Siemianowski, Konstantin Schneider
-
Patent number: 10954442Abstract: The invention is directed to a method for the preparation of a liquid crystal block copolymer, comprising melt polycondensation of a melt comprising at least two non-latent aromatic monomers and a latent aromatic monomer.Type: GrantFiled: March 30, 2017Date of Patent: March 23, 2021Assignee: Allotropica Technologies, Inc.Inventor: Theodoras Jacobus Dingemans
-
Patent number: 10782567Abstract: An object of the present invention is to provide an optical film having an optically-anisotropic layer having excellent durability, a polarizing plate and an image display device in which the optical film is used, a polymerizable compound used in the optical film, and a method for manufacturing a 1,4-cyclohexanedicarboxylic acid monoaryl ester. The optical film of the present invention is an optical film having at least an optically-anisotropic layer, in which the optically-anisotropic layer is a layer obtained by polymerizing a polymerizable liquid crystal composition containing a polymerizable compound which has a specific structure, a liquid crystal compound which has a specific structure, and a polymerization initiator.Type: GrantFiled: May 21, 2018Date of Patent: September 22, 2020Assignee: FUJIFILM CorporationInventors: Keita Takahashi, Hiroshi Matsuyama, Naozumi Shiraiwa, Taiji Katsumata, Yuuta Fujino, Hiroshi Sato, Kiyoshi Takeuchi, Hiroyuki Hagio, Aiko Yoshida, Hiroaki Nakatsugawa
-
Patent number: 10768498Abstract: A liquid crystal display device includes a first substrate, a second substrate facing the first substrate, and a liquid crystal layer interposed between the first substrate and the second substrate. The liquid crystal layer includes liquid crystal molecules having a negative dielectric anisotropy, a response speed of about 4.0 ms or less, and a rotational viscosity of about 47 mPa·S to about 75 mPa·S.Type: GrantFiled: May 1, 2017Date of Patent: September 8, 2020Assignee: Samsung Display Co., Ltd.Inventors: Soon Joon Rho, Kyungmin Kim, Jin-Lak Kim, Hyelim Jang
-
Patent number: 10655065Abstract: A liquid crystal compound comprising a specific compound having a positive dielectric anisotropy as the first component, and a specific compound having a low viscosity as a second component. Further, the liquid crystal compound may contain a specific compound having a positive dielectric anisotropy as the third component, a specific compound having a maximum temperature or a low viscosity as the fourth component, or a specific compound having a negative dielectric anisotropy as the fifth component.Type: GrantFiled: August 1, 2017Date of Patent: May 19, 2020Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Maiko Matsukuma, Masayuki Saito
-
Patent number: 10570335Abstract: The present invention relates to a liquid crystal (LC) medium comprising polymerisable compounds, to a process for its preparation, to its use for optical, electro-optical and electronic purposes, in particular in LC displays, and to LC displays comprising it.Type: GrantFiled: June 2, 2016Date of Patent: February 25, 2020Assignee: Merck Patetn GmbHInventors: Dong-Mee Song, Ki-Sun Kwon, Hoo-Yong Lee, Melanie Klasen-Memmer, Christian Schoenefeld, Konstantin Schneider, Matthias Koch, Joerg Peschke, Matthias Bremer, Nils Greinert
-
Patent number: 10570334Abstract: Shown is a bimesogenic compound having high solubility in a liquid crystal compound, a liquid crystal composition, a chiral dopant, an additive including an antioxidant or an ultraviolet light absorber, and a polymerizable liquid crystal compound, each of which is used in other bimesogenic compounds or a liquid crystal display device, while maintaining desired physical properties. A compound is represented by formula (1), a liquid crystal composition contains the compound, conjugate fibers with an encapsulated liquid crystal obtained from the liquid crystal composition, and a liquid crystal display device is obtained from the conjugate fibers with the encapsulated liquid crystal.Type: GrantFiled: March 2, 2016Date of Patent: February 25, 2020Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Michiko Sawada, Yasuyuki Sasada
-
Patent number: 10513657Abstract: The present invention relates to liquid-crystalline media (LC media) having negative or positive dielectric anisotropy, comprising a low-molecular-weight component and a polymerizable component. The polymerizable component comprises self-aligning, polymerizable mesogens (polymerizable self-alignment additives) which effect homeotropic (vertical) alignment of the LC media at a surface or the cell walls of a liquid-crystal display (LC display). The invention therefore also encompasses LC displays having homeotropic alignment of the LC medium without alignment layers. The invention discloses novel structures for self-alignment additives which have a certain position of the functional groups.Type: GrantFiled: November 3, 2017Date of Patent: December 24, 2019Assignee: Merck Patent GmbHInventors: Graziano Archetti, Izumi Saito, Rocco Fortte, Thorsten Kodek
-
Patent number: 10479940Abstract: A liquid crystal compound having positive dielectric anisotropy is provided and contains a compound represented by formula (1) as a first component, a compound represented by formula (2) as a second component, a polar compound as a first additive and a polymerizable compound as a second additive. In formula (1), R1a is alkyl having 1 to 12 carbons, or the like; ring Q and ring S are independently 1,4-cyclohexylene, 1,4-phenylene or the like; Z1a and Z2a are independently a single bond or the like; X1a and X2a are independently hydrogen or fluorine; Y1a is fluorine, chlorine, alkyl having 1 to 12 carbons in which at least one hydrogen is replaced by fluorine or chlorine, or the like; q is 1, 2, 3 or 4; s is 0, 1, 2 or 3; and a sum of q and s is 4 or less.Type: GrantFiled: March 31, 2016Date of Patent: November 19, 2019Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Naoko Matsuda, Masayuki Saito
-
Patent number: 10450508Abstract: The invention relates to bimesogenic compounds of formula I wherein R11, R12, MG11, MG12, X11, X12 and Sp1 have the meaning given in claim 1, to the use of bimesogenic compounds of formula l in liquid crystal media and particular to flexoelectric liquid crystal devices comprising a liquid crystal medium according to the present invention.Type: GrantFiled: June 19, 2015Date of Patent: October 22, 2019Assignee: Merck Patent GmbHInventors: Kevin Adlem, Owain Llyr Parri, Rachel Tuffin, Hassan Arasi, Benjamin Snow
-
Patent number: 10287501Abstract: A liquid crystal display element having an improved response speed by using a liquid crystal compound having a high K33, while neither improving nor deteriorating all the characteristics as a liquid crystal display element. The liquid crystal display element 10 of the present invention has a first substrate 15, a second substrate 15?, and a liquid crystal composition layer 5 interposed between the first substrate 15 and the second substrate 15?, wherein at least one of the first substrate 15 and the second substrate 15? has an electrode that controls the liquid crystal composition layer 5 and the bend elastic constant K33 of at least one kind of liquid crystal compounds in the liquid crystal composition constituting the liquid crystal composition layer 5 is 20 pN or more.Type: GrantFiled: March 7, 2013Date of Patent: May 14, 2019Assignees: TOKYO INSTITUTE OF TECHNOLOGY, TOKYO UNIVERSITY OF SCIENCE EDUCATIONAL FOUNDATION ADMINISTRATIVE ORGANIZATION, DIC CorporationInventors: Hideo Takezoe, Satoshi Aya, Takashi Yamashita, Kunihiko Okano
-
Patent number: 10240088Abstract: The invention relates to substituted quinquephenyls of the formulae indicated in the claims and description. They are particularly suitable as UV-stabilizing component in liquid-crystalline media.Type: GrantFiled: September 17, 2015Date of Patent: March 26, 2019Assignee: MERCK PATENT GMBHInventors: Christian Jasper, Timo Uebel, Detlef Pauluth, Michael Junge
-
Patent number: 10234758Abstract: A liquid solder resist composition contains a carboxyl group-containing resin, a photopolymerizable compound containing at least one compound selected from a group consisting of a photopolymerizable monomer and a photopolymerizable prepolymer, a photopolymerization initiator, a titanium dioxide, and a compound having a cyclic ether skeleton. The titanium dioxide contains both of a rutile titanium dioxide manufactured by a sulfuric acid method and a rutile titanium dioxide manufactured by a chlorine method.Type: GrantFiled: December 10, 2014Date of Patent: March 19, 2019Assignee: GOO CHEMICAL CO., LTD.Inventors: Yoshio Sakai, Michiya Higuchi, Nobuhito Hamada, Tokuzan Miyake
-
Patent number: 10214692Abstract: The invention relates to a liquid-crystalline medium which comprises at least one compound of the formula I, in which R1, R1*, Z1, Z2 and L1-3 have the meanings defined herein, and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PS-VA, PALC, FFS, PS-FFS, PS-IPS or IPS effect.Type: GrantFiled: October 2, 2017Date of Patent: February 26, 2019Assignee: MERCK PATENT GMBHInventors: Harald Hirschmann, Monika Bauer, Martina Windhorst, Marcus Reuter, Constanze Brocke, Rocco Fortte, Matthias Bremer, Sabine Schoen
-
Patent number: 10007148Abstract: A liquid crystal composition includes a first compound expressed by following Chemical Formula 1 and about 0.001 wt % to about 0.05 wt % of a second compound expressed by following Chemical Formula 2, where A and B are a cyclo-hexyl group or a phenyl group, m is 0 to 4, n is 1 to 2, X is an alkyl group or an alkoxy group, and Y is one or two fluorine (F) or chlorine (Cl) atoms, and where n is 0 to 2, I is 0 to 1, Z is a halogen group, an alkyl group, or an alkoxy group, and A and A? are methyl groups that do not independently exist.Type: GrantFiled: September 9, 2014Date of Patent: June 26, 2018Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Joon-Hyung Park, Kyung Seon Tak, Kang Seob Jeong, Min-Hee Kim
-
Patent number: 9953738Abstract: An electroconductive resin composition and a molded product thereof. The electroconductive resin includes 100 parts by weight of a thermoplastic polymer resin; 0.5 to 5 parts by weight of a carbon nanotube aggregate formed of a plurality of carbon nanotubes having an average outer diameter of 8 to 50 nm and an average inner diameter that is 40% or more of the average outer diameter; and 5 to 15 parts by weight of carbon black.Type: GrantFiled: March 29, 2017Date of Patent: April 24, 2018Assignee: Korea Kumho Petrochemical Co., Ltd.Inventors: Ho Soo Hwang, Wan Sung Lee
-
Patent number: 9914876Abstract: The invention relates to bimesogenic compounds of formula I wherein R11, R12, MG11, MG12, X11, X12 and Sp1 have the meaning given in claim 1, to the use of bimesogenic compounds of formula I in liquid crystal media and particular to flexoelectric liquid crystal devices comprising a liquid crystal medium according to the present invention.Type: GrantFiled: June 14, 2013Date of Patent: March 13, 2018Assignee: Merck Patent GmbHInventors: Kevin Adlem, Owain Llyr Parri, Rachel Tuffin, Patricia Eileen Saxton, Benjamin Snow, Mark John Goulding, Nathan Smith
-
Patent number: 9862886Abstract: An exemplary embodiment of the present invention provides a compound represented by Chemical Formula 1: wherein, in Chemical Formula 1, n is 0, 1, or 2, and a substituent represented by X is F, Cl, CF3, CF2CF3 CHF2, CH2F, OCF3, CN, NCS, or a C1 to C5 alkyl including 1 to 3 fluoro substituents and a CH2 group independently substituted with one or more oxygen atoms; (R1) is hydrogen or a C1 to C15 alkyl, at least one CH2 group being independently replaced with —C?C—, —CF2O—, —CH?CH—, —O—, —CO—O—, —O—CO—, or —O—CO—O— in a way that oxygen atoms are directly connected to each other, and 1 to 3 hydrogen atoms of the C1 to C15 alkyl being replaced with halogen; (F) indicates that a fluoro is optionally substituted in place of a hydrogen, and each of is independentlyType: GrantFiled: June 16, 2016Date of Patent: January 9, 2018Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hye Lim Jang, Beom-Soo Shin, Si Heun Kim, Keun Chan Oh, Bong Hee Kim, Sun Hee Lee
-
Patent number: 9758727Abstract: The invention relates to bimesogenic compounds of formula I wherein R11, R12, MG11, MG12, X11, X12 and Sp1 have the meaning given in claim 1, to the use of bimesogenic compounds of formula I in liquid crystal media and particular to flexoelectric liquid crystal devices comprising a liquid crystal medium according to the present invention.Type: GrantFiled: November 27, 2014Date of Patent: September 12, 2017Assignee: Merck Patent GmbHInventors: Kevin Adlem, Owain Llyr Parri, Rachel Tuffin, Patricia Eileen Saxton
-
Patent number: 9745512Abstract: The invention relates to liquid-crystalline mixtures comprising at least one compound of the formula I, in which X, L1, L2, L3, L4 and alkenyl have the meanings indicated in claim 1, in order to increase the pretilt at the polyimide surface, and to liquid-crystalline media comprising one or more compounds of the formula I in electro-optical liquid-crystal displays and in LC lenses.Type: GrantFiled: February 15, 2011Date of Patent: August 29, 2017Assignee: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNGInventors: Michael Wittek, Brigitte Schuler, Volker Reiffenrath
-
Patent number: 9688913Abstract: A liquid crystal composition includes one or more of compounds represented by general formula (i) below and one or more of compounds represented by general formula (ii) below. In the formulae, R11a and R21a each independently represent an alkyl group having 1 to 8 carbon atoms where one —CH2— or two or more non-adjacent —CH2— in the alkyl group may each independently be substituted with —CH?CH—, —C?C—, —O—, —CO—, —COO—, or —OCO—; one or more hydrogen atoms in the alkyl group may be substituted with a fluorine atom or a chlorine atom; X11a, X12a, X13a, X14a, and X21a each independently represent a hydrogen atom or a fluorine atom; A21a, A22a, and A23a each independently represent a trans-1,4-cyclohexylene group or a 1,4-phenylene group whose hydrogen atom may be substituted with a fluorine atom or a chlorine atom.Type: GrantFiled: March 5, 2013Date of Patent: June 27, 2017Assignee: DIC CORPORATIONInventors: Joji Kawamura, Masahiro Niwa, Makoto Negishi
-
Patent number: 9617477Abstract: A compound represented by formula (1), a liquid crystal composition, a liquid crystal display device are described. In formula (1), for example, the ring A1 and the ring A4 are phenylene or cyclohexylene; Z1, Z2, Z3 and Z4 are a single bond or alkylene having 1 to 6 carbons; L1 is a single bond; s and t are 0; and P1, P2, P3 and P4 are a polymerizable group.Type: GrantFiled: August 7, 2015Date of Patent: April 11, 2017Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Yasuyuki Goto, Maiko Matsukuma, Junichi Yamashita
-
Patent number: 9390990Abstract: Disclosed herein are a molding composition for a semiconductor package including a liquid crystal thermosetting polymer resin and graphene oxide to thereby effectively decrease coefficient of thermal expansion (CTE) and warpage and maximize an effect of thermal conductivity, and a semiconductor package using the same.Type: GrantFiled: May 29, 2014Date of Patent: July 12, 2016Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Soo Young Ji, Seung Hwan Kim
-
Patent number: 9239493Abstract: The present invention provides a liquid crystal alignment agent capable of preventing a decrease in voltage holding ratio (VHR), a liquid crystal display containing such a liquid crystal alignment agent, and a method for manufacturing such a liquid crystal display. Aspects of the present invention include a liquid crystal alignment agent containing at least one polymer selected from a polyamic acid and an imide polymer thereof and at least one difunctional monomer having an anthracene or phenanthrene structure, a liquid crystal display including an alignment film formed on at least one of an active substrate and a counter substrate using the above liquid crystal alignment agent, and a method for manufacturing a liquid crystal display including the steps of forming an active substrate and forming a counter substrate, at least one of which includes forming an alignment film on the active substrate or the counter substrate using the above liquid crystal alignment agent.Type: GrantFiled: December 21, 2011Date of Patent: January 19, 2016Assignee: SHARP KABUSHIKI KAISHAInventors: Masanobu Mizusaki, Youhei Nakanishi
-
Patent number: 9195097Abstract: The liquid crystal display device according to the present invention includes a pair of substrates, and a liquid crystal layer disposed between the pair of substrates, wherein the liquid crystal layer includes a liquid crystal material having a negative dielectric constant anisotropy, at least one of the pair of substrates is provided with an alignment film for vertically aligning adjacent liquid crystal molecules, and a polymer layer formed on the alignment film for controlling the alignment of the adjacent liquid crystal molecules, the polymer layer is formed by polymerization of at least one monomer, the polymerization being initiated by radicals generated of the monomer upon absorption of light, the alignment film includes a polymer compound having a main chain that contains an imide structure, and the main chain has an imidization ratio of less than 50%.Type: GrantFiled: July 27, 2011Date of Patent: November 24, 2015Assignees: SHARP KABUSHIKI KAISHA, TOYO GOSEI CO., LTD.Inventors: Masanobu Mizusaki, Youhei Nakanishi, Takeshi Noma, Yuichiro Yamada, Satoshi Enomoto, Yuki Hara, Hideo Kikuchi
-
Patent number: 9182632Abstract: The present invention provides a liquid crystal display device that rarely causes burn-in at high throughput. The present invention provides a liquid crystal display device that includes a pair of substrates and a liquid crystal layer between the pair of substrates, wherein at least one of the pair of substrates includes an alignment layer and a polymer layer for controlling the alignment of adjacent liquid crystal molecules, the polymer layer being disposed on the alignment layer, the polymer layer has a structure containing at least three condensed benzene rings, and the alignment layer is covalently bonded to the polymer layer.Type: GrantFiled: December 6, 2011Date of Patent: November 10, 2015Assignee: SHARP KABUSHIKI KAISHAInventor: Masanobu Mizusaki
-
Patent number: 9181480Abstract: A liquid crystal composition having a negative dielectric anisotropy, a component (B) including at least one compound represented by formula (1.1) or formula (1.2), wherein the compound (B) is dielectrically neutral, having a dielectric anisotropy of more than ?2 and less than +2; and a component (A) including at least one compound represented by formula (2.1) or formula (2.2), wherein the component (A) is dielectrically negative, having a dielectric anisotropy of ?2 or less.Type: GrantFiled: November 12, 2012Date of Patent: November 10, 2015Assignee: DIC CORPORATIONInventors: Joji Kawamura, Yoshinori Iwashita, Shinji Ogawa
-
Patent number: 9181482Abstract: The present invention relates to polymerisable compounds, to processes and intermediates for the preparation thereof, and to the use thereof for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays, especially in LC displays of the PS (polymer-stabilised) and PSA (polymer-sustained alignment) type.Type: GrantFiled: December 17, 2013Date of Patent: November 10, 2015Assignee: Merck Patent GmbHInventors: Achim Goetz, Erdal Durmaz, Malgorzata Rillich, Andreas Taugerbeck
-
Patent number: 9164326Abstract: The present invention provides a liquid crystal display device in which image sticking seldom occurs. The liquid crystal display device according to the present invention includes a pair of substrates, and a liquid crystal layer disposed between the pair of substrates, wherein the liquid crystal layer includes a liquid crystal material having a negative dielectric constant anisotropy, at least one of the pair of substrates is provided with an alignment film for vertically aligning adjacent liquid crystal molecules, and a polymer layer formed on the alignment film for controlling the alignment of the adjacent liquid crystal molecules, and the polymer layer is formed by polymerization of at least one monomer, the polymerization being initiated by radicals generated of the monomer upon absorption of light.Type: GrantFiled: July 27, 2011Date of Patent: October 20, 2015Assignees: SHARP KABUSHIKI KAISHA, TOYO GOSEI CO., LTD.Inventors: Masanobu Mizusaki, Youhei Nakanishi, Takeshi Noma, Yuichiro Yamada, Satoshi Enomoto, Yuki Hara, Hideo Kikuchi
-
Patent number: 9164325Abstract: The liquid crystal display device according to the present invention includes a pair of substrates, and a liquid crystal layer disposed between the pair of substrates, wherein the liquid crystal layer includes a liquid crystal material having a negative dielectric constant anisotropy, at least one of the pair of substrates is provided with an alignment film for vertically aligning adjacent liquid crystal molecules, and a polymer layer formed on the alignment film for controlling the alignment of the adjacent liquid crystal molecules, the polymer layer is formed by polymerization of at least one monomer, the polymerization being initiated by radicals generated of the monomer upon absorption of light, the alignment film includes a polymer compound having a main chain that contains an imide structure, and the main chain has an imidization ratio of 50% or more.Type: GrantFiled: July 27, 2011Date of Patent: October 20, 2015Assignees: SHARP KABUSHIKI KAISHA, TOYO GOSEI CO., LTD.Inventors: Masanobu Mizusaki, Youhei Nakanishi, Takeshi Noma, Yuichiro Yamada, Satoshi Enomoto, Yuki Hara, Hideo Kikuchi
-
Patent number: 9163178Abstract: Disclosed is a liquid crystal compound with negative dielectric anisotropy, having a general formula as Formula 1. In Formula 1, each of L1, L2, L3, and L4, being same or different, is hydrogen, halogen, or cyano group. Each of R1 and R2, being same or different, is hydrogen, halogen, C1-12 alkyl group, C1-12 alkoxy group, C1-12 haloalkyl group, C2-12 alkenyl group, C2-12 ether group, or C2-12 alkynyl group. Each of A1 and A2, being same or different, is benzene, cyclohexane, or cyclohexene. Z1 is —CF2O—, or —OCF2—, and Z2 is —CF2O—, or —OCF2—.Type: GrantFiled: February 26, 2014Date of Patent: October 20, 2015Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chao-Wu Liaw, Kuo-Chang Wang, Jian-Wen Lin, Shih-Hsien Liu, Kung-Lung Cheng
-
Patent number: 9157027Abstract: A compound represented by formula (1), a liquid crystal composition, a liquid crystal display device are described. In formula (1), for example, the ring A1 and the ring A4 are phenylene or cyclohexylene; Z1, Z2, Z3 and Z4 are a single bond or alkylene having 1 to 6 carbons; L1 is a single bond; s and t are 0; and P1, P2, P3 and P4 are a polymerizable group.Type: GrantFiled: December 23, 2012Date of Patent: October 13, 2015Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Yasuyuki Goto, Maiko Matsukuma, Junichi Yamashita
-
Patent number: 9139672Abstract: A liquid crystal composition and a liquid crystal display device which includes the composition are provided. The liquid crystal composition contains a specific compound having a polymerizable group as a first component, and may contain a specific compound having a large negative dielectric anisotropy and a low minimum temperature as a second component, or a specific compound having a small viscosity or a large maximum temperature as a third component. The liquid crystal composition satisfies at least one of the following characteristics: a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat. Alternatively, a liquid crystal composition having a suitable balance regarding at least two of the aforementioned characteristics is also provided.Type: GrantFiled: October 1, 2012Date of Patent: September 22, 2015Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Yukihiro Fujita, Yoshimasa Furusato, Maiko Matsukuma
-
Publication number: 20150123031Abstract: A method of manufacturing polymer dispersed liquid crystal includes: mixing liquid crystal, a first photopolymerizable material, a first photoinitiator, a second photopolymerizable material and a second photoinitiator to form a mixture, in which the first photoinitiator is capable to initiate polymerization of the first photopolymerizable material by irradiating a first ultraviolet light, and the second photoinitiator is capable to initiate polymerization of the second photopolymerizable material by irradiating a second ultraviolet light, and the first ultraviolet light has a wavelength different from that of the second ultraviolet light. The first photopolymerizable material is polymerized by irradiating the first ultraviolet light to form a plurality of first liquid crystal droplets. The second photopolymerizable material is polymerized by irradiating the second ultraviolet light to form a plurality of second liquid crystal droplets dispersed between the first liquid crystal droplets.Type: ApplicationFiled: December 19, 2013Publication date: May 7, 2015Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: Jian-Hua CHEN, Chun-Wei SU
-
Patent number: 9023462Abstract: A thermally conductive polymer composite material and an article including the same. The thermally conductive polymer composite material includes 15 to 20 parts by weight of a wholly aromatic liquid crystalline polyester resin; and 80 to 85 parts by weight of a thermally conductive additive.Type: GrantFiled: November 28, 2011Date of Patent: May 5, 2015Assignee: Shenzhen Wote Advanced Materials Co., Ltd.Inventors: Youn Eung Lee, Jin Kyu Lee, Young Taek Oh, Mahn Jong Kim
-
Patent number: 9011990Abstract: The invention relates to a liquid crystal display utilizing a vertically aligned state of liquid crystal molecules when no voltage is applied and to a method of manufacturing the same. The liquid crystal display includes a monofunctional monomer having a structure expressed by X-R (where X represents an acrylate group or a methacrylate group, and R represents an organic group having a steroid skeleton). A liquid crystal material is sandwiched between substrates which is then irradiated with ultraviolet rays to cure the monofunctional monomer, thereby forming a polymer film at an interface of a substrate. The monofunctional monomer has a hydrophobic skeleton such as an alkyl chain and a photoreactive group on one side of the skeleton.Type: GrantFiled: December 27, 2013Date of Patent: April 21, 2015Assignee: Unified Innovative Technology, LLCInventors: Shingo Kataoka, Hideaki Tsuda, Katsufumi Ohmuro, Jin Hirosawa, Seiji Tanuma, Yoshio Koike
-
Patent number: 8999459Abstract: The present invention relates to a liquid-crystal (LC) display of the PSA (polymer sustained alignment) type, and to polymerizable compounds and LC media for use in PSA displays.Type: GrantFiled: July 30, 2008Date of Patent: April 7, 2015Assignee: Merck Patent GmbHInventors: Georg Bernatz, Melanie Klasen-Memmer, Matthias Bremer
-
Patent number: 8999196Abstract: The invention is to provide a new liquid crystal compound having a high clearing point, a good compatibility with other compounds, a small viscosity, and a high stability to heat, light and so forth; compound (1) is provided: R1CF2nR2??(1) wherein, for example, R1 is alkyl having 4 to 10 carbons or —(CH2)2—CH?CH2, R2 is alkyl having 2 to 10 carbons, n is 8, and R1 and R2 are not allowed to be straight-chain alkyl having an identical number of carbons.Type: GrantFiled: August 23, 2012Date of Patent: April 7, 2015Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Hiroyuki Tanaka, Sayaka Fujimori
-
Publication number: 20150090935Abstract: The invention relates to bimesogenic compounds of formula I wherein R11, R12, MG11, MG12, X11, X12 and Sp1 have the meaning given in claim 1, to the use of bimesogenic compounds of formula I in liquid crystal media and particular to flexoelectric liquid crystal devices comprising a liquid crystal medium according to the present invention. Furthermore the invention relates to bimesogenic compounds of formula I inducing a second nematic phase in nematic mixtures that do not show this additional phase without compounds of formula I.Type: ApplicationFiled: May 7, 2013Publication date: April 2, 2015Applicant: Merck Patent GmbHInventors: Kevin Adlem, Owain Llyr Parri, Rachel Tuffin, Benjamin Snow, Mariam Namutebi
-
Patent number: 8981108Abstract: An optical film including at least one compound represented by formula (1) is disclosed. In the formula, Y11, Y12 and Y13 each independently represent methine or a nitrogen atom; R11, R12 and R13 each independently represent formula (A), (B) or (C) or a hydrogen atom, provided that at least two of R11, R12 and R13 each independently represent formula (A), (B) or (C). In the formulae, L12, L22, and L32 each represent a 5-membered heterocyclic group.Type: GrantFiled: July 30, 2013Date of Patent: March 17, 2015Assignee: FUJIFILM CorporationInventors: Ryo Hamasaki, Hideyuki Nishikawa, Makoto Takahashi, Takashi Miyahara, Masuji Motoki, Masaaki Tsukase