Including Heterocyclic Ring Patents (Class 252/299.61)
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Patent number: 10208251Abstract: 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 28, 2016Date of Patent: February 19, 2019Assignee: MERCK PATENT GMBHInventors: Harald Hirschmann, Monika Bauer, Martina Windhorst, Marcus Reuter, Constanze Brocke, Rocco Fortte, Matthias Bremer, Sabine Schoen
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Patent number: 10208249Abstract: Provided are a liquid crystal compound satisfying at least one of physical properties such as high stability to heat or light, high maximum temperature of a liquid-crystal phase, low minimum temperature thereof, small viscosity, suitable optical anisotropy, large dielectric anisotropy and good compatibility with other liquid-crystal compounds, a liquid crystal composition containing the compound and a liquid crystal display device including the composition. A compound is represented by formula (1), a liquid crystal composition contains the compound and a liquid crystal display device includes the composition. In formula (1), Ra and Rb are fluorine or alkyl; A0, A1 and A2 are 1,4-phenylene; Z1 and Z2 are a single bond or alkylene; one of Y1 and Y2 is fluorine, and the other is hydrogen; Rc is alkyl; and a and b are independently 0, 1, 2 or 3, and a sum of a and b is 0, 1, 2 or 3.Type: GrantFiled: September 19, 2017Date of Patent: February 19, 2019Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Yasuyuki Sasada, Michiko Sawada
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Patent number: 10208250Abstract: Provided are a liquid crystal composition including at least one or more compounds represented by General Formula (i) and at least one or more compounds represented by General Formula (M-1), in which the dielectric constant anisotropy at 25° C. is larger than 0 and 5 or less; and a liquid crystal display element using this composition. The liquid crystal composition has a positive ??, can have the electrical capacity of the liquid crystal layer (CLC) reduced to a low level, can be driven at a voltage that is practically sufficiently low, and satisfies at least any one of the requirements of maintaining a liquid crystal phase over a wider temperature range, low viscosity, satisfactory solubility at low temperature, high specific resistance or voltage retention rate, and stability to heat or light; and provide an excellent liquid crystal display element.Type: GrantFiled: December 17, 2014Date of Patent: February 19, 2019Assignee: DIC CORPORATIONInventors: Shirou Taniguchi, Joji Kawamura
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Patent number: 10202508Abstract: Mixtures containing at least one dye compound having a diketopyrrolopyrrole structure and at least one further liquid-crystalline compound are suitable for use in devices for regulating the entry of light into a space.Type: GrantFiled: November 19, 2014Date of Patent: February 12, 2019Assignee: MERCK PATENT GMBHInventors: Qiong Tong, Peer Kirsch, Michael Junge, Ursula Patwal, Andreas Beyer
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Patent number: 10174253Abstract: A liquid crystal composition has the nematic phase and contains a specific compound having large positive dielectric anisotropy as a first component, a specific compound having small viscosity as a second component, and may contain a specific compound having high maximum temperature or small viscosity as a third component, a specific compound having large positive dielectric anisotropy as a fourth component or a specific compound having negative dielectric anisotropy as a fifth component, and a liquid crystal display device includes the composition.Type: GrantFiled: October 8, 2014Date of Patent: January 8, 2019Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Masayuki Saito, Yoshimasa Furusato
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Patent number: 10144871Abstract: To show a liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat; a liquid crystal composition having a suitable balance regarding at least two of the characteristics; and an AM device having a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. The liquid crystal composition has the nematic phase and contains a specific compound having large dielectric anisotropy as a first component, and may contain a specific compound having a high maximum temperature or small viscosity as a second component, and a specific compound having large dielectric anisotropy as a third component, and a liquid crystal display device includes the composition.Type: GrantFiled: September 25, 2014Date of Patent: December 4, 2018Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Yoshimasa Furusato, Masayuki Saito
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Patent number: 10119074Abstract: A liquid crystal composition includes a compound having a structure represented by formula A-1: wherein RA1 is an alkyl group, an alkoxy group, a cyano group, a halogen atom, or a hydrogen atom, RA2 is an alkyl group, a cyano group, a halogen atom, or a hydrogen atom, ZA is *—O—*, *—COO—*, *—OCO—*, *—CF2O—*, *—OCF2—*, *—CH2O—*, *—OCH2—*, *—SCH2—*, *—CH2S—*, *—C2F4—*, *—CH2CF2—*, *—CF2CH2—*, *—(CH2)k—*, *—CH?CH—*, *—CF?CF—*, *—CH?CF—*, *—CF?CH—*, *—C?C—*, *—CH?CHCH2O—*, or a single bond, X is a halogen atom, each of l1 and l2 is independently an integer of 0 to 2, and when l1 is 2 and ZA in a repeating unit defined by l1 are the same or different, wherein k is an integer of 1 to 5 and “*” indicates a point of attachment.Type: GrantFiled: February 1, 2017Date of Patent: November 6, 2018Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Ji Eun Jang, Sun Young Kwon, Tae Hoon Kim, Jong Ho Son, Keun Chan Oh, Won Gap Yoon, Gak Seok Lee, Jin Hyeong Lee, Chang Hun Lee
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Patent number: 10113116Abstract: A liquid crystal compound and a composition employing the same are provided. The liquid crystal compound has a structure represented by Formula (I) wherein R1, A1, A2, A3, A4, Z1, Z2, Z3, Z4, X, m, n, o, and p are defined as in the description.Type: GrantFiled: January 27, 2016Date of Patent: October 30, 2018Assignee: DAXIN MATERIALS CORPORATIONInventors: Chih-Yuan Lo, Hsin-Cheng Liu, Guo-Yu Lan, Chun-Chih Wang
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Patent number: 10106741Abstract: The invention relates to an electro-optical liquid-crystal display having a re-alignment layer for re-alignment of the liquid crystals whose field has a component, crucial for the re-alignment, parallel to the liquid-crystal layer, containing a liquid-crystalline medium, characterized in that it comprises one or more compounds of the formula I1 to I3, (I1) (I2) (I3) and at least one compound of the formula II, in which the parameters R11, R11*, Z0, Sp, k, l, p, Y21 to Y22, R21 and R22 have the meanings indicated in claim 1.Type: GrantFiled: October 23, 2013Date of Patent: October 23, 2018Assignee: Merck Patent GmbHInventors: Markus Czanta, Izumi Saito, Sven Baran, Christian Jasper, Lars Lietzau
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Patent number: 10108052Abstract: An object of the present invention is to provide a liquid-crystal display element using a liquid-crystal composition having negative dielectric anisotropy, capable of realising excellent display characteristics by being used in an FFS mode liquid-crystal display element, without deteriorating various characteristics as a liquid-crystal display element such as dielectric anisotropy, viscosity, a nematic phase upper limit temperature, nematic phase stability at low temperatures, and ?1, and burn-in characteristics of a display element.Type: GrantFiled: October 29, 2014Date of Patent: October 23, 2018Assignee: DIC CORPORATIONInventors: Yoshinori Iwashita, Shinji Ogawa, Hiroshi Hasebe, Masanao Takashima
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Patent number: 10100252Abstract: Shown is a liquid crystal composition satisfying at least one or having suitable balance regarding at least two of characteristics such as high maximum or low minimum temperature of a nematic phase, large optical anisotropy, large positive dielectric anisotropy and high stability to ultraviolet light, a liquid crystal display device including such a composition, particularly including an encapsulated composition, and a liquid crystal display device including the composition serving as a constituent of 3D lens.Type: GrantFiled: May 11, 2017Date of Patent: October 16, 2018Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventor: Eiji Okabe
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Patent number: 10100251Abstract: The invention provides a liquid crystal compound satisfying at least one of physical properties such as a high stability to heat or light, a high clearing point (or a high maximum temperature), a low minimum temperature of a liquid crystal phase, a small viscosity, a suitable optical anisotropy, a small dielectric anisotropy, a suitable elastic constant and a good compatibility with other liquid crystal compounds, a liquid crystal composition including this compound, and a liquid crystal display device containing this composition. The invention provides a compound represented by formula (1): where R1 and R2 is alkyl having 1 to 20 carbons or the like; one of L1 and L2 is both hydrogens, and the other is both fluorines; Z1 and Z2 are independently a single bond, —COO—, —OCO—, —OCH2—, —CH2O—, —CF2O—, —OCF2—, —CH2CH2—, —CH?CH—, —C?C— or the like.Type: GrantFiled: February 22, 2017Date of Patent: October 16, 2018Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Yasuyuki Gotoh, Takahiro Kubo
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Patent number: 10093857Abstract: There is provided a liquid crystal composition having the following properties without reductions in refractive index anisotropy (?n) and nematic phase-isotropic liquid phase transition temperature (Tni): sufficiently small viscosity (?), sufficiently small rotational viscosity (?1), a large elastic constant (K33), and negative dielectric anisotropy (??) with a large absolute value. There is also provided a liquid crystal display device of, for example, a VA type in which such a liquid crystal composition is used and which has a high response speed and excellent display quality with defective display being eliminated or reduced. The liquid crystal display device using the liquid crystal composition of the present invention is useful as an active-matrix liquid crystal display device and can be used in liquid crystal display devices of, for instance, a VA mode and PSVA mode.Type: GrantFiled: March 27, 2014Date of Patent: October 9, 2018Assignee: DIC CORPORATIONInventors: Shinichi Hirata, Hyobok Cha, Naomi Hatano, Tomoaki Hara, Yasuo Umezu
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Patent number: 10088614Abstract: The present application relates to a liquid crystal composition, a polarizing element and a use of the polarizing element. Since the polarizing element may be prepared by a simple coating process, the guest host type liquid crystal composition of the present application allows not only for reducing the manufacturing cost and lightweight thinning of the polarizing element, but also for manufacturing the polarizing element showing an excellent heat resistant stability without changes of absorption spectrum to transmission spectrum even in a severe condition such as high temperature environment. Such a polarizing element can be applied to various display devices such as liquid crystal display devices, EL display devices, field emission display devices, display devices using electronic papers, projection display devices or piezoelectric ceramic display devices.Type: GrantFiled: July 4, 2016Date of Patent: October 2, 2018Assignee: LG CHEM, LTD.Inventors: Ji Youn Lee, Sin Young Kim, Moon Soo Park, Dae Hee Lee
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Patent number: 10078247Abstract: The present invention relates to a liquid crystal display that incorporates a particular liquid crystal composition and a sealant in which a cured form of a particular curable resin composition is used. The present invention provides a liquid crystal display that prevents reduced voltage holding ratio (VHR) and increased ionic density (ID) in the liquid crystal layer and solves the problems of display defects such as voids, alignment irregularities, and image-sticking. Liquid crystal displays according to the present invention, featuring the ability to prevent reduced voltage holding ratio (VHR) in the liquid crystal layer and reduce the occurrence of display defects such as alignment irregularities and image-sticking, are useful particularly to liquid crystal displays in the IPS and FFS modes for active matrix drive and applicable to liquid crystal displays of equipment such as liquid crystal TVs, monitors, mobile phones, and smartphones.Type: GrantFiled: August 1, 2014Date of Patent: September 18, 2018Assignee: DIC CORPORATIONInventors: Yoshiyuki Ono, Jouji Kawamura, Yoshinori Iwashita, Hiroyuki Takeda
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Patent number: 10056557Abstract: The purpose of the present invention is to provide an organic semiconductor material having liquid crystallinity and high electron mobility. The present invention is an organic semiconductor material having at least a charge-transporting molecular unit (A) having a structure of an aromatic fused ring system and a cyclic structural unit (B) bonded to the aforementioned unit via a single bond, wherein the unit (A) and/or the unit (B) has a side chain composed of a unit (C), and wherein the organic semiconductor material exhibits a liquid crystal phase that is different from an N-phase, an SmA-phase or an SmC-phase.Type: GrantFiled: March 9, 2012Date of Patent: August 21, 2018Assignees: Tokyo Institute of Technology, DIC CorporationInventors: Junichi Hanna, Takeo Kobori, Takayuki Usui, Yukiko Takayashiki, Hiroaki Iino, Akira Oono
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Patent number: 10040998Abstract: Disclosed is a liquid crystal composition and use thereof. The liquid crystal composition comprises components a, b and c; wherein component a is selected from one of the compounds represented by formula I; component b is a liquid crystal composition having a dielectric anisotropy of greater than 3; and component c is a liquid crystal composition having a dielectric anisotropy of ?3 to 3. The liquid crystal composition has a high contrast ratio property, and has a low change rate at a low temperature, that is, the decrease of contrast ratio at a low temperature (such as ?20° C.) is smaller as compared to a normal temperature. The composition has suitable properties with regard to practical applications, including a broader nematic phase range, an appropriate dielectric anisotropy, optical anisotropy and operating voltage, an excellent response time, a high electrical resistivity and voltage holding ratio, a low rotary viscosity, etc.Type: GrantFiled: November 15, 2013Date of Patent: August 7, 2018Assignee: Shijiazhuang Chengzhi Yonghua Display Materials Co., Ltd.Inventors: Guoliang Yun, Yunxia Qiao, Ruimao Hua, Xing Zhang, Ming Li, Jin Wang, Yajie Duan, Hongmei Cui, Yamin Li, Jingyi Feng
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Patent number: 10040999Abstract: Provided is a liquid crystal composition having at least one of, or a suitable balance regarding at least two of, characteristics such as a high maximum temperature, a low minimum temperature, small viscosity, suitable optical anisotropy and large dielectric anisotropy, and an AM device including the composition. The liquid crystal composition contains a specific compound having positive dielectric anisotropy as a first component, a specific compound having small viscosity as a second component, and may contain a specific compound having positive dielectric anisotropy as a third component, a specific compound having a high maximum temperature or small viscosity as a fourth component or a specific compound having negative dielectric anisotropy as a fifth component.Type: GrantFiled: January 12, 2017Date of Patent: August 7, 2018Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Yoshimasa Furusato, Masayuki Saito
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Patent number: 10023799Abstract: To provide a liquid crystal compound satisfying at least one of physical properties such as high stability to light, a high clearing point, a low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, a large dielectric constant in a minor axis direction, a suitable elastic constant and excellent compatibility; a liquid crystal composition containing the compound; and a liquid crystal display device including the composition.Type: GrantFiled: January 27, 2014Date of Patent: July 17, 2018Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Hiroyuki Tanaka, Hiroshi Endou
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Patent number: 10023800Abstract: The present invention relates to a composition for manufacturing optical elements with negative optical dispersion, and an optically anisotropic body prepared therefrom. According to the present invention, the optically anisotropic body showing stable reverse wavelength dispersion can be prepared more simply by using the composition for optical elements, and it is possible to apply the same to liquid crystal display devices as an optical film such as a thin-layer broadband ?/4 plate.Type: GrantFiled: September 19, 2014Date of Patent: July 17, 2018Assignee: LG CHEM, LTD.Inventors: Jung Hyun Kim, Sung-Ho Chun, Kyung Chang Seo, Min Hyung Lee, Jun Seong Ahn
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Patent number: 10017695Abstract: Disclosed are dibenzofuran and dibenzothiophene derivatives of the general formula I, in which X1, X2, W, Y, R, A, Z and m have the meaning defined in claim 1, to a process for the preparation thereof, to the use thereof as components in liquid-crystalline media, and to electro-optical display elements which contain the liquid-crystalline media according to the invention.Type: GrantFiled: April 11, 2016Date of Patent: July 10, 2018Assignee: MERCK PATENT GMBHInventors: Lars Lietzau, Constanze Brocke, Volker Reiffenrath, Atsutaka Manabe
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Patent number: 9994768Abstract: The composition contains a specific compound having a high maximum temperature and a low minimum temperature as a first component and has negative dielectric anisotropy, and may further contain a specific compound having large negative dielectric anisotropy as a second component, a specific compound having a high maximum temperature or small viscosity as a third component, a specific compound having large negative dielectric anisotropy as a fourth component and a specific compound having a polymerizable group as an additive component.Type: GrantFiled: October 3, 2014Date of Patent: June 12, 2018Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Yoshimasa Furusato, Masayuki Saito
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Patent number: 9976084Abstract: A liquid crystal composition including an antioxidant, and a liquid crystal display device containing this composition are described. The liquid crystal composition has a nematic phase, has a high solubility in a liquid crystal composition, and includes a specific antioxidant useful for preventing deterioration of the composition. The liquid crystal composition may also include a specific compound having a high maximum temperature or a small viscosity as a first component, a specific compound having a high maximum temperature or a large dielectric anisotropy as a second component, and a specific compound having a large negative dielectric anisotropy as a third component.Type: GrantFiled: December 26, 2013Date of Patent: May 22, 2018Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Yasuyuki Gotoh, Ryushi Shundo, Norikatsu Hattori
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Patent number: 9951274Abstract: The invention relates to compounds of the formula I, to a liquid-crystalline medium which comprises at least one compound of the formula I, in which R1, R1*, L1, L2, L3 and L4 have the meanings indicated herein, and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PS-VA, PM-VA, PALC, IPS, PS-IPS, SA-VA, SS-VA, FFS or PS-FFS effect.Type: GrantFiled: December 18, 2014Date of Patent: April 24, 2018Assignee: MERCK PATENT GMBHInventors: Harald Hirschmann, Monika Bauer, Martina Windhorst, Marcus Reuter, Volker Reiffenrath, Matthias Bremer
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Patent number: 9951277Abstract: To show a liquid crystal compound satisfying at least one of physical properties such as a high stability to heat, light or the like, a high clearing point, a low minimum temperature of a liquid crystal phase, a small viscosity, a suitable optical anisotropy, a large dielectric anisotropy, a suitable elastic constant and an excellent compatibility with other liquid crystal compounds, a liquid crystal composition containing the compound and a liquid crystal display device including the composition. A compound represented by formula (1): wherein, in formula (1), for example, R1 is alkyl having 1 to 15 carbons; ring A1 and ring A2 are 1,4-cyclohexylene, 1,4-cyclohexenylene, 1,4-phenylene, 1,4-phenylene in which at least one piece of hydrogen is replaced by halogen, tetrahydropyran-2,5-diyl or 1,3-dioxane-2,5-diyl; Z1 and Z2 are a single bond or —CF2O—; L1, L2 and L3 are halogen or hydrogen; and a is 0 to 3.Type: GrantFiled: February 19, 2015Date of Patent: April 24, 2018Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Akihiro Takata, Takahiro Kubo
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Patent number: 9946175Abstract: To provide an electrophotographic photosensitive member which satisfies abrasion resistance and electrical properties and which is difficult to cause image deletion. A surface layer of the electrophotographic photosensitive member of this invention contains a polymerized product of a hole transporting compound having a polymerizable functional group, in which the hole transporting compound is at least one compound selected from the group consisting of: a compound consisting of one or more carbon atoms, one or more hydrogen atoms, and one or more halogen atoms; and a compound consisting of one or more carbon atoms, one or more hydrogen atoms, one or more oxygen atoms, and one or more halogen atoms.Type: GrantFiled: March 23, 2015Date of Patent: April 17, 2018Assignee: Canon Kabushiki KaishaInventors: Koichi Nakata, Shinji Takagi, Yuzo Tokunaga, Masaki Nonaka, Ryoichi Tokimitsu
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Patent number: 9938462Abstract: The present invention relates to a liquid-crystal medium which comprises a component A which consists of one or more compounds selected from the group of the formulae I-M and I-U in which the parameters have the respective meanings given in the claims or in the text, and to the corresponding, novel mesogenic compounds and to the preparation thereof. The present invention likewise relates to the use of these liquid-crystal media, in particular in components for high-frequency technology, and to components of this type which contain media according to the invention, and to the production and use of these components. The components according to the invention are suitable, in particular, as phase shifters in the microwave and millimeter wave region, for microwave and millimeter wave array antennae and very particularly for so-called tuneable “reflectarrays”.Type: GrantFiled: December 2, 2013Date of Patent: April 10, 2018Assignee: MERCK PATENT GMBHInventors: Atsutaka Manabe, Dagmar Klass, Renate Seeger, Michael Wittek, Matthias Bremer
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Patent number: 9920247Abstract: The invention is a liquid crystal composition satisfying at least one of characteristics or having a suitable balance regarding at least two of the characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, large specific resistance, and high stability to ultraviolet light and heat. The liquid crystal composition has the nematic phase, and contains a specific compound having large dielectric anisotropy as a first component and a specific compound having small viscosity as a second component, and may contain a specific compound having a high maximum temperature or small viscosity as a third component, and a specific compound having large dielectric anisotropy as a fourth component, and a liquid crystal display device includes the composition.Type: GrantFiled: June 19, 2014Date of Patent: March 20, 2018Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Masayuki Saito, Yoshimasa Furusato
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Patent number: 9914877Abstract: The present invention relates to a liquid crystal panel, a liquid crystal display device and to a liquid crystal medium having a negative dielectric anisotropy ??.Type: GrantFiled: October 31, 2011Date of Patent: March 13, 2018Assignee: MERCK PATENT GMBHInventors: Eun-Kyu Lee, Seung-Eun Lee, Dong-Mee Song
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Patent number: 9896624Abstract: To show a liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature, a low minimum temperature, small viscosity, suitable optical anisotropy, large positive dielectric anisotropy or having a suitable balance regarding at least two of the characteristics, and an AM device including the liquid crystal composition. The liquid crystal composition contains a specific compound having high maximum temperature and small viscosity as a first component, and a specific compound having large positive dielectric anisotropy as a second component, and may contain a specific compound having high maximum temperature or small viscosity as a third component, a specific compound having positive dielectric anisotropy as a fourth component, or a specific compound having negative dielectric anisotropy as a fifth component.Type: GrantFiled: June 29, 2016Date of Patent: February 20, 2018Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Naoko Matsuda, Masayuki Saito
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Patent number: 9879182Abstract: A liquid crystal compound satisfies at least one of physical properties such as a high stability to heat, light and so forth, a high clearing point, a low minimum temperature of a liquid crystal phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a suitable elastic constant and an excellent compatibility with other liquid crystal compounds. The compound is represented by formula (1). In the formula, for example, R1 and R2 are alkyl having 1 to 15 carbons; ring A1 and ring A2 are 1,4-cyclohexylene or 1,4-phenylene, Z1 and Z2 are a single bond, —(CH2)2—, —CH?CH—, —C?C—, —COO—, —OCO—, —CH2O—, —OCH2—, —CF2O—, —OCF2— or —CF?CF—, a and b are 0, 1 or 2, and a sum of a and b is 1 or 2.Type: GrantFiled: March 25, 2014Date of Patent: January 30, 2018Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventor: Sayaka Fujimori
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Patent number: 9879183Abstract: To show a liquid crystal compound satisfying at least one of physical properties such as high chemical stability, a high clearing point, a low minimum temperature of a liquid crystal phase, low viscosity, large optical anisotropy, large dielectric anisotropy, a suitable elastic constant and excellent compatibility with other liquid crystal compounds, a liquid crystal composition containing the compound and a liquid crystal display device including the composition. A compound is represented by formula (1).Type: GrantFiled: June 4, 2015Date of Patent: January 30, 2018Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Michiko Takahashi, Sayaka Fujimori, Yasuyuki Sasada
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Patent number: 9868906Abstract: A liquid crystal composition satisfies at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat, or has a suitable balance regarding at least two of the characteristics. The composition contains a specific compound having high stability to ultraviolet light as a first component, and a liquid crystal display device includes the composition. The composition may contain a specific compound having large negative dielectric anisotropy as a second component, a specific compound having high maximum temperature or small viscosity as a third component, and a specific compound having a polymerizable group as an additive component.Type: GrantFiled: June 19, 2014Date of Patent: January 16, 2018Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Eriko Kurihara, Masayuki Saito, Yoshimasa Furusato
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Patent number: 9834725Abstract: To show a liquid-crystal composition having at least one or a suitable balance regarding at least two of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature thereof, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat; and an AM device including the composition and having short response time, a large voltage holding ratio, low threshold voltage, a large contrast ratio or a long service life. The liquid-crystal composition has negative dielectric anisotropy and contains a specific compound having a high maximum temperature and small viscosity as a first component, and the composition may contain a specific compound having large negative dielectric anisotropy as a second component, a specific compound having a high maximum temperature or small viscosity as a third component, and a specific compound having a polymerizable group as an additive component.Type: GrantFiled: June 12, 2016Date of Patent: December 5, 2017Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Naoko Matsuda, Masayuki Saito
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Patent number: 9828549Abstract: There is provided a liquid crystal composition containing any one or two or more of compounds represented by general formula (i) below and any one or two or more of compounds represented by general formula (ii) below.Type: GrantFiled: February 20, 2013Date of Patent: November 28, 2017Assignee: DIC CORPORATIONInventors: Joji Kawamura, Makoto Negishi, Yoshinori Iwashita
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Patent number: 9822305Abstract: The instant invention relates to mesogenic media exhibiting a blue phase, comprising one or both components selected from the two following components, components A and B, component A, comprising one or more compounds selected from the group of compounds of formula I-M, and component B, consisting of one or more compounds selected from the group of compounds of formula I-U, wherein the parameters are as specified in the text, preferably stabilized by a polymer, and their use in electro-optical light modulation elements and their respective use in displays, as well as to such displays.Type: GrantFiled: August 26, 2013Date of Patent: November 21, 2017Assignee: MERCK PATENT GMBHInventors: Michael Wittek, Erdal Durmaz, Malgorzata Rillich, Mila Fischer, Matthias Bremer
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Patent number: 9791745Abstract: Disclosed therein are a photoalignment polyimide copolymer making it easier to form a liquid crystal alignment layer with excellences in alignment properties, thermal and structural stabilities, and adhesiveness to a substrate, and a liquid crystal alignment layer using the same. The photoalignment polyimide copolymer includes all the three types of repeating units each having a defined structure.Type: GrantFiled: August 26, 2013Date of Patent: October 17, 2017Assignee: LG CHEM, LTD.Inventors: Seung-Yeon Hwang, Sung-Ho Chun, Dong-Woo Yoo, Hyeong-Bin Jang
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Patent number: 9777216Abstract: The invention relates to a liquid-crystalline medium which comprises at least one compound of the formula I, and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PS-VA, PALC, FFS or IPS effect.Type: GrantFiled: January 31, 2011Date of Patent: October 3, 2017Assignee: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNGInventors: Melanie Klasen-Memmer, Matthias Bremer, Konstantin Schneider
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Patent number: 9777217Abstract: Compounds containing at least one C—C triple bond within a chain of at least 3 ring systems which have positive dielectric anisotropy, the use thereof for high-frequency components, liquid-crystalline media containing these compounds, and high-frequency components, in particular antennae, especially for the gigahertz region, containing these media. The liquid-crystalline media serve, for example, for the phase shifting of microwaves for tuneable phased-array antennae.Type: GrantFiled: February 27, 2012Date of Patent: October 3, 2017Assignee: MERCK PATENT GMBHInventors: Christian Jasper, Constanze Brocke, Detlef Pauluth, Volker Reiffenrath, Atsutaka Manabe
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Patent number: 9701903Abstract: The present invention relates to a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy (??), which is distinguished by the fact that it has a value for the ratio ?1/?n2 in the range 6-45 with a clearing point of >60° C. and a ?? of ??2.3. Media of this type are particularly suitable for electro-optical displays having active-matrix addressing based on the ECB, PA LCD, FFS or IPS effect.Type: GrantFiled: May 7, 2015Date of Patent: July 11, 2017Assignee: Merck Patent GmbHInventors: Melanie Klasen-Memmer, Sabine Schoen
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Patent number: 9695361Abstract: The liquid crystal composition of the present invention can be used in a liquid crystal display element of an IPS type or a TN type in which display defects such as burn-in and dropping marks in high speed response are unlikely to be generated. Since the liquid crystal composition contains a component which is a dielectrically positive component including a dielectrically positive compound and a dielectrically neutral component of which dielectric anisotropy is greater than ?2 and less than +2, the liquid crystal composition has excellent characteristics that the liquid crystal composition has a liquid crystal phase in a wide temperature range, low viscosity, excellent solubility at a low temperature, high specific resistance and a high voltage holding ratio, and is stable with respect to heat and light.Type: GrantFiled: October 5, 2012Date of Patent: July 4, 2017Assignee: DIC CORPORATIONInventor: Joji Kawamura
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Patent number: 9688914Abstract: Discussed is a liquid crystal material including: a liquid crystal molecule including an alkenyl group; a phenol-based antioxidant; and a light stabilizer for recycling the phenol-based antioxidant.Type: GrantFiled: May 30, 2014Date of Patent: June 27, 2017Assignee: LG DISPLAY CO., LTD.Inventors: Seung-Kwang Roh, Woo-Young Choi
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Patent number: 9683173Abstract: A liquid crystal composition of the present invention is used for a liquid crystal display device of an active matrix driving method, which requires fast response. The liquid crystal composition has negative dielectric anisotropy and a large absolute value thereof, and low viscosity. The liquid crystal composition is chemically stable to heat, light, water, and the like, and is suitable as a liquid crystal composition capable of low-voltage driving and practicable and having high reliability. A liquid crystal display device using the liquid crystal composition can be preferably used for a liquid crystal display device of a VA mode, a PASV mode, a PSA mode, or the like.Type: GrantFiled: December 18, 2012Date of Patent: June 20, 2017Assignee: DIC CORPORATIONInventors: Takeshi Kuriyama, Go Sudo, Shinichi Hirata, Shotaro Kawakami
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Patent number: 9683170Abstract: There is provided a liquid crystal composition which is suitably used in a liquid crystal display device without impairment of properties inherent in liquid crystal display devices. There is provided a liquid crystal display device in which such a liquid crystal composition is used. There is provided a liquid crystal composition having a negative dielectric anisotropy and containing a compound represented by Formula (I-1) and at least one compound represented by General Formula (II) and also provided a liquid crystal display device in which such a liquid crystal composition is used.Type: GrantFiled: March 26, 2013Date of Patent: June 20, 2017Assignee: DIC CORPORATIONInventors: Yoshinori Iwashita, Makoto Negishi
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Patent number: 9657229Abstract: To provide a liquid crystal compound satisfying at least one of physical properties such as high stability to light, a high clearing point, a low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, a large dielectric constant in a minor axis direction, a suitable elastic constant and excellent compatibility; a liquid crystal composition containing the compound; and a liquid crystal display device including the composition. The compound is represented by formula (1). For example, R1 is alkyl having 1 to 15 carbons, ring A1 to ring A4 are 1,4-cyclohexylene or 1,4-phenylene, Z1 to Z4 are a single bond, —(CH2)2—, —COO— or —CH2O—, X1 is halogen, —C?N, —CF3 or —OCF3, L1 and L2 are hydrogen or fluorine, Y1 and Y2 are fluorine; a, b, c and d each are 0 or 1, and a sum thereof is 1 or 2.Type: GrantFiled: January 27, 2014Date of Patent: May 23, 2017Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Hiroyuki Tanaka, Hiroshi Endou
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Patent number: 9650572Abstract: There is provided a liquid crystal composition containing at least any one of compounds represented by General Formula (i) and at least any one of compounds represented by General Formula (ii).Type: GrantFiled: March 25, 2013Date of Patent: May 16, 2017Assignee: DIC CORPORATIONInventors: Joji Kawamura, Makoto Negishi, Yoshinori Iwashita
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Patent number: 9624435Abstract: A liquid crystal composition is described, containing at least one compound selected from compounds of formula (1) and at least one compound selected from compounds of formula (2): wherein, for example, X is —OH or —COOH; Z1 is methylene; Z2, Z3, Z4 and Z5 are a single bond; L is —CH?CH—CH?CH—; R1 is straight alkyl; P1, P2 and P3 are a polymerizable group; ring A and ring B are 1,4-phenylene or naphthalene-2,6-diyl; and a, b, c and d are 0 or 1.Type: GrantFiled: January 14, 2015Date of Patent: April 18, 2017Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Yukihiro Fujita, Yoshimasa Furusato
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Patent number: 9624434Abstract: The liquid crystal composition of the present invention is used for liquid crystal display devices of an IPS mode, a TN mode, and the like that have a high response speed and do not easily cause display defectiveness such as ghosting or dropping marks. The liquid crystal composition contains a component which is a dielectrically positive component containing a dielectrically positive compound and a dielectrically neutral component which exhibits dielectric anisotropy greater than ?2 and smaller than +2. The liquid crystal composition has excellent properties in which the composition forms a liquid crystal phase in a wide temperature range, has a low viscosity, dissolves excellently at a low temperature, has a high degree of specific resistance and voltage holding ratio, and is stable with respect to heat or light.Type: GrantFiled: November 28, 2012Date of Patent: April 18, 2017Assignee: DIC CORPORATIONInventor: Joji Kawamura
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Patent number: 9617374Abstract: The invention provides a high-molecular liquid crystal material for a frame of a Liquid Crystal Display (LCD), which is prepared by cross-linking and polymerizing a group which includes terephthalic acid and an alcohol which includes carbon-carbon double bonds, wherein, the group which includes terephthalic acid is any one of terephthalic acid, ortho-alkyl-terephthalic acid or meta-alkyl-terephthalic acid; the alcohol which includes carbon-carbon double bonds is any one of vinyl alcohol, vinyl alcohol with alkyl, or conjugated vinyl alcohol. The high-molecular liquid crystal material improves the steric hindrance among the molecules, and prevents from reacting with the liquid crystal small molecules to form a coordination complex; the high-molecular liquid crystal material has high stability, and cannot form a solid state under a certain molecular weight, thus improving the flexibility and being beneficial for the coating process.Type: GrantFiled: June 30, 2013Date of Patent: April 11, 2017Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTDInventor: Liang Xu
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Patent number: RE46426Abstract: The invention relates to a polymer film having negative optical dispersion, novel polymerisable compounds and liquid crystal (LC) materials for its preparation, and the use of the polymer film and novel compounds and materials in optical, electrooptical, electronic, semiconducting or luminescent components or devices.Type: GrantFiled: October 15, 2014Date of Patent: June 6, 2017Assignee: MERCK PATENT GMBHInventors: Owain Llyr Parri, Kevin Adlem, Karl Skjonnemand, David Wilkes