Patents Examined by Geraldina Visconti
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Patent number: 10457869Abstract: A liquid crystal composition comprises a compound of general formula I serving as a first component; a compound of general formula II-1 and/or general formula II-2 serving as a second component; a compound of general formula III serving as a third component; a compound of general formula IV serving as a fourth component; a compound of general formula V serving as a fifth component; and a compound of general formula VI serving as a sixth component. The liquid crystal composition has at least one characteristic among the characteristics of a large dielectric anisotropy, a large optical anisotropy, a high voltage holding ratio and a low threshold voltage and the like, and is suitable to be used in a liquid crystal display device. Additionally, a liquid crystal display device comprising the liquid crystal composition is also provided.Type: GrantFiled: April 21, 2016Date of Patent: October 29, 2019Assignee: Jiangsu Hecheng Display Technology Co., Ltd.Inventors: Huijuan Dai, Wenming Han, Wenquan Ding, Pengfei Li, Haibin Xu, Di He, Yunyun Liu, Lifang Yao, Wenyang Ma, Dingfu Ma, Heming Zhang
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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
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Patent number: 10442991Abstract: Shown is a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy, large dielectric anisotropy and small frequency dependence, or has a suitable balance regarding at least two of the characteristics, and an AM device including the composition. The liquid crystal composition contains a specific compound having large positive dielectric anisotropy as a first component, and 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 positive dielectric anisotropy as a fourth component or a specific compound having negative dielectric anisotropy as a fifth component.Type: GrantFiled: April 5, 2017Date of Patent: October 15, 2019Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Naoko Matsuda, Masayuki Saito
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Patent number: 10441936Abstract: Shown is a method for producing a liquid crystal capsule having a particle diameter of 30 to 150 nanometers, and a method for producing a liquid crystal capsule without using a homogenizer. The disclosure concerns a method for producing a liquid crystal capsule, including a step of preparing an emulsion by performing phase inversion emulsification of a mixed material obtained by mixing a liquid crystal composition, a monomer, a surfactant, and a polymerization initiator; and a step of producing a liquid crystal capsule by applying a coacervation method to the emulsion. The disclosure also concerns a liquid crystal capsule having a liquid crystal composition, a surfactant and a capsule wall, wherein the capsule wall has a closed curved shape, the liquid crystal composition and a hydrophobic moiety of the surfactant are arranged inside the capsule wall, and a hydrophilic moiety of the surfactant is arranged outside the capsule wall.Type: GrantFiled: July 10, 2015Date of Patent: October 15, 2019Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION, NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITYInventors: Tatsuo Taniguchi, Sho Hidaka, Eiji Okabe, Fumitaka Kondo
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Patent number: 10437107Abstract: 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 realizing excellent display characteristics by being used in a liquid-crystal display element provided with a photo-alignment film, 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. A liquid-crystal display element using a liquid-crystal composition containing at least one compound selected from the group consisting of compounds represented by the following General Formula (I) is provided.Type: GrantFiled: October 29, 2014Date of Patent: October 8, 2019Assignee: DIC CORPORATIONInventors: Yoshinori Iwashita, Shinji Ogawa, Hiroshi Hasebe, Masanao Takashima
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Patent number: 10435627Abstract: The subject is to show a liquid crystal display device that has characteristics such as a short response time, a large voltage holding ratio, a low threshold voltage, a large contrast ratio, a long service life and a small flicker rate. The disclosure relates to a liquid crystal display device including an electrode group formed on one or both of a pair of substrates that are opposed to each other, and a plurality of active devices connected to the electrode group, and a liquid crystal alignment film formed on the opposing surfaces of the pair of substrates, and a liquid crystal composition sandwiched in between the pair of substrates, and the liquid crystal composition includes at least one compound selected from the group of compounds represented by formula (1) as a first component.Type: GrantFiled: March 24, 2015Date of Patent: October 8, 2019Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Yoshimasa Furusato, Masayuki Saito
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Patent number: 10428273Abstract: Shown are a liquid crystal compound satisfying at least one of physical properties such as high stability to heat and light, a high clearing point (or high maximum temperature), low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, a suitable elastic constant and satisfactory compatibility with other liquid crystal compounds, a liquid crystal composition containing the compound and a liquid crystal display device including the composition.Type: GrantFiled: July 21, 2017Date of Patent: October 1, 2019Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Kazuo Okumura, Tokifumi Masukawa, Keiji Kimura
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Patent number: 10421906Abstract: There is provided a liquid crystal display element. The liquid crystal layer contains a liquid crystal composition between the first substrate and the second substrate. The first common electrode contains a transparent conductive material on the first substrate. The second common electrode contains a transparent conductive material on the second substrate. The pixel electrode contains a transparent conductive material. Distances R between the pixel electrode and the common electrode is smaller than distance G between the first substrate and the second substrate. The common electrode is disposed closer to the first substrate than the pixel electrode over nearly the entire surface of the first substrate. The liquid crystal composition has negative dielectric anisotropy and contains one or two or more compounds selected from the group of compounds represented by General Formula (i), General Formula (ii), and General Formula (iii).Type: GrantFiled: July 23, 2015Date of Patent: September 24, 2019Assignee: DIC CORPORATIONInventors: Kazunori Maruyama, Yoshinori Iwashita, Shinji Ogawa
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Patent number: 10414981Abstract: The present invention relates to the technical field of liquid crystal displays, and particularly relates to a liquid crystal composition containing a 2-methyl-3,4,5-trifluorobenzene liquid crystal compound and use thereof, wherein the liquid crystal composition of the present invention comprises, in percentages by weight, 1-50% of one or more compounds represented by general formula I and 10-70% of one or more compounds represented by general formula II, and may further comprise 0-30% of compounds represented by general formula III and/or 6-45% of one or more compounds represented by general formulas IV to XIII. The liquid crystal composition provided by the present invention has a low rotational viscosity and a large elastic constant, is presented as having a shorter response time, and can significantly improve the display effect of a liquid crystal display when applied to TN, IPS and FFS mode displays.Type: GrantFiled: October 23, 2015Date of Patent: September 17, 2019Assignee: BEIJING BAYI SPACE LCD TECHNOLOGY CO., LTDInventors: Maoxian Chen, Haiguang Chen, Shihong Chu, Xin Wei, Xinying Wang, Tianmeng Jiang, Huiqiang Tian, Yunpeng Guo, Lin Zhang, Qinghua Li, Jin Yuan, Xuehui Su
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Patent number: 10414979Abstract: An object of the present invention is to provide a composition that has positive ??, exhibits a liquid crystal phase over a wide temperature range, has low viscosity, excellent solubility at low temperatures, and high resistivity and voltage holding ratio, and is stable against heat and light. By using this composition, IPS or TN liquid crystal display devices and the like that have excellent display quality and suppress display failures such as image-sticking and drop marks are provided in high yield. Provided is a composition that contains at least one selected from the group consisting of compounds represented by general formulae (i) and (ii) and at least one selected from compounds represented by general formula (iii). Moreover, a liquid crystal display device using the composition and an IPS or FFS device that uses the composition are provided.Type: GrantFiled: August 25, 2015Date of Patent: September 17, 2019Assignee: DIC CORPORATIONInventors: Shinji Ogawa, Makoto Negishi, Yoshinori Iwashita
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Patent number: 10414980Abstract: This invention provides an FFS type liquid crystal display containing one type or two or more types of compounds selected from the group of compounds represented by General Formula (i), General Formula (ii), and General Formula (iii) and one type or two or more types of compounds selected from compounds represented by General Formula (II). This display makes it possible to realize excellent display characteristics without deteriorating various liquid crystal display characteristics such as dielectric anisotropy, viscosity, nematic-phase maximum temperature, nematic-phase stability at low temperatures, or ?1 and the display burn-in characteristics.Type: GrantFiled: July 23, 2015Date of Patent: September 17, 2019Assignee: DIC CORPORATIONInventors: Kazunori Maruyama, Takashi Kitsunai, Shinji Ogawa
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Patent number: 10407619Abstract: A liquid crystal composition which prevents production of an alignment defect of a liquid crystal compound and also has excellent storage stability during dissolution in a solvent is provided. The liquid crystal composition is suitable for constituting a retardation film capable of favorable circular polarization conversion. The liquid crystal composition includes a polymerizable liquid crystal compound having 3 or more ring structures in the main chain, and aluminum. A content of the aluminum is 1 ppm or more and 170 ppm or less relative to the polymerizable liquid crystal compound.Type: GrantFiled: May 18, 2017Date of Patent: September 10, 2019Assignee: Sumitomo Chemical Company, LimitedInventors: Daichi Fujimoto, Noriyuki Hida, Tatsuaki Kasai
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Patent number: 10400168Abstract: An object of the present invention is to provide a composition that has positive ??, exhibits a liquid crystal phase over a wide temperature range, has low viscosity, excellent solubility at low temperatures, and high resistivity and voltage holding ratio, and is stable against heat and light. By using this composition, IPS or TN liquid crystal display devices and the like that have excellent display quality and suppress display failures such as image-sticking and drop marks are provided in high yield. Provided is a composition that contains at least one selected from the group consisting of compounds represented by general formulae (i) and (ii) and at least one compound represented by general formula (iii). Also provided is a liquid crystal display device that uses the composition and an IPS or FFS device that uses the composition.Type: GrantFiled: August 25, 2015Date of Patent: September 3, 2019Assignee: DIC CORPORATIONInventors: Shinji Ogawa, Makoto Negishi, Yoshinori Iwashita
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Patent number: 10400170Abstract: This polymerizable compound is represented by a formula (I), this polymerizable composition contains said polymerizable compound and a polymerization initiator, this polymer is obtained by polymerizing the polymerizable compound or polymerizable composition, and this optically anisotropic product is comprised from the polymer. In the formula, each of Y1 to Y8 represents —O—, —S—, —O—C(?O)—, —C(?O)—O—, etc., Ya represents —O—, —S—, —O—C(?O)—, —C(?O)—O—, etc., each of G1 and G2 represents a divalent linear aliphatic group having 1 to 20 carbon atoms, etc., each of Z1 and Z2 represents an alkenyl group having 2 to 10 carbon atoms, etc., Ax represents an organic group having an aromatic ring and 2 to 30 carbon atoms, A1 represents a trivalent aromatic group, etc., each of A2 and A3 represents a divalent alicyclic hydrocarbon group having 3 to 30 carbon atoms, each of A4 and A5 represents a divalent aromatic group having 4 to 30 carbon atoms, etc., Q1 represents an alkyl group having 1 to 6 carbon atoms, etc.Type: GrantFiled: February 9, 2015Date of Patent: September 3, 2019Assignee: ZEON CORPORATIONInventors: Kei Sakamoto, Kumi Okuyama
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Patent number: 10400169Abstract: 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: September 3, 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: 10392343Abstract: The present invention is a polymerizable compound represented by a general formula (I), a polymerazable composition, a polymer, and an optically anisotropic product.Type: GrantFiled: February 9, 2015Date of Patent: August 27, 2019Assignee: ZEON CORPORATIONInventors: Kei Sakamoto, Kumi Okuyama
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Patent number: 10392562Abstract: Provided is a polymerizable liquid crystal compound represented by formula (1). An aspect can be exemplified, in which, in formula (1), W1 is hydrogen or a substituent, A1 is 1,4-phenylene, 1,4-cyclohexylene or naphthalene-2,6-diyl, Z1 and Y1 are a connecting group, m and n each are an integer from 0 to 7, in which an expression: 3?m+n?8 holds, Q1 is a spacer, and PG is a polymerizable group.Type: GrantFiled: August 30, 2017Date of Patent: August 27, 2019Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Daisuke Ootsuki, Nagahisa Miyagawa
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Patent number: 10392339Abstract: Provided is a polar compound having high chemical stability, high capability of aligning liquid crystal molecules, high solubility in a liquid crystal composition, and a large voltage holding ratio when used in a liquid crystal display device. The compound is represented by formula (1): in which, for example, R1 is alkyl having 1 to 15 carbons; MES is a mesogen group having at least one ring; Sp1 is a single bond or alkylene having 1 to 10 carbons; M1 and M2 are hydrogen; and R2 is a group represented by formulas (1a) to (1c): in which, Sp2 and Sp3 are a single bond or alkylene having 1 to 10 carbons; S1 is >CH—; S2 is >C<; and X1 is —OH.Type: GrantFiled: February 4, 2016Date of Patent: August 27, 2019Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Hiroyuki Tanaka, Masakazu Yano, Fumitaka Kondou, Kazuhiro Ogita
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Patent number: 10385270Abstract: The present invention discloses a liquid crystal composition, comprising: at least a first compound selected from the group consisting of a compound of general Formula I-1, a compound of general Formula I-2, and a combination thereof, and at least a second compound selected from the group consisting of a compound of general Formula II-1, a compound of general Formula II-2, a compound of general Formula II-3, a compound of general Formula II-4 and a combination thereof. The liquid crystal composition provided in the present invention has the properties of appropriate optical and dielectric anisotropies, high clearing point, existence of a nematic phase over a wide range of temperature, low viscosity and good high-temperature stability. The liquid crystal composition is applicable to a liquid crystal display (LCD) device, to enable the LCD device to have such properties as short response time, excellent display effect at high temperature, and others.Type: GrantFiled: September 8, 2015Date of Patent: August 20, 2019Assignee: JIANGSU HECHENG DISPLAY TECHNOLOGY CO., LTD.Inventors: Wenming Han, Haibin Xu, Dingfu Ma, Qi Liu
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Patent number: 10385272Abstract: Provided 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, and a liquid crystal display device including such a composition, particularly an encapsulated liquid crystal display device, and a liquid crystal display device serving as a constituent of 3D lenses.Type: GrantFiled: July 10, 2015Date of Patent: August 20, 2019Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventor: Eiji Okabe