Patents Examined by Anna Malloy
  • Patent number: 11681219
    Abstract: A resist composition including a polymer; and a compound represented by Formula 1, in Formula 1, R1 is hydrogen, a halogen, an alkyl group having 1 to 7 carbon atoms, a carbonyl group having 1 to 7 carbon atoms, an ester group having 1 to 7 carbon atoms, an acetal group having 1 to 7 carbon atoms, an alkoxy group having 1 to 7 carbon atoms, an ether group having 1 to 7 carbon atoms, or a group represented by Formula R, and R2, R3, R4 and R5 are hydrogen, a halogen, an alkyl group having 1 to 7 carbon atoms, an ester group having 1 to 7 carbon atoms, an acetal group having 1 to 7 carbon atoms, an alkoxy group having 1 to 7 carbon atoms, or an ether group having 1 to 7 carbon atoms,
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: June 20, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yechan Kim, Su Min Kim, Ju-Young Kim, Jinjoo Kim, Hyunwoo Kim, Juhyeon Park, Hyunji Song, Songse Yi, Suk Koo Hong
  • Patent number: 11674082
    Abstract: A polymerizable liquid crystal compound represented by Chemical Formula 1, a liquid crystal composition for an optical element comprising the same, a polymer polymerized from the same, an optically anisotropic body comprising a cured material or polymerized reactant of the liquid crystal composition or the polymer, and an optical element for a display device comprising the optical anisotropic body are disclosed herein: wherein, in Chemical Formula 1, A1 to A3, B1 to B3, R1 to R3, P1 to P3, R4 to R8, l, m, n, p, q r, k, and L1 to L3 are disclosed herein.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: June 13, 2023
    Inventors: Minyoung Kang, Hyok Joon Kwon, Sung In Lee
  • Patent number: 11667840
    Abstract: The present invention relates to liquid-crystalline media comprising one or more compounds of formula DFS in which the groups and parameters occurring have the meanings indicated in claim 1, to high-frequency components comprising same, especially microwave components for high-frequency devices, such as devices for shifting the phase of microwaves, in particular for microwave phased-array antennas. The present invention further relates to novel mesogenic compounds.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: June 6, 2023
    Assignee: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Christian Jasper, Volker Reiffenrath, Constanze Brocke, Detlef Pauluth, Dagmar Klass, Michael Wittek, Renate Seeger, Dmitry Ushakov, Beate Schneider
  • Patent number: 11644750
    Abstract: Provided is a negative photoresist used for a semiconductor encapsulation process, belonging to the technical field of semiconductor processing. A negative photoresist formulation includes 40-65 wt % of modified epoxy acrylate, 3-6 wt % of photosensitizer, 100-1000 ppm of leveling agent, and the remainder of solvent; the leveling agent is a solution of a 7:3 mass ratio of polydimethylsiloxane copolymer having a molecular weight of 3000-6000 and propylene glycol monomethyl ether acetate. If the negative photoresist is coated at a thickness of about 50 um, the coating uniformity can be controlled to below 5%, ensuring the quality of exposure such that the thickness of electroplated copper meets requirements.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: May 9, 2023
    Assignee: Jiangsu Aisen Semiconductor Material Co., Ltd.
    Inventors: Wensheng Xiang, Kun Zhu, Lan Lu, Bing Zhang, Jianlong Zhao
  • Patent number: 11640111
    Abstract: A photosensitive resin composition including a poly(imide-benzoxazine) block copolymer, and a cured film. The poly(imide-benzoxazine) block copolymer included in the photosensitive resin composition enables the formation of a cured film having excellent mechanical and insulation even at a low temperature of less than 200° C.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: May 2, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Min Hyung Lee, Dai Seung Choi
  • Patent number: 11634640
    Abstract: 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: Grant
    Filed: September 25, 2018
    Date of Patent: April 25, 2023
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Li Wang, Haibing Xu, Pengfei Li, Di He, Rui Jin
  • Patent number: 11629291
    Abstract: 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: Grant
    Filed: June 28, 2018
    Date of Patent: April 18, 2023
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Wenyang Ma, Liwei Wang, Haibin Xu, Wenming Han, Wenqi Zhang
  • Patent number: 11629157
    Abstract: A series of 8-(bisphenylethynyl)-ester flexible multiple ring-containing fluoroboron pyrrole liquid crystal dyes are synthesized by introducing a diphenylethynyl rigid structure at position 8 of a boron-dipyrromethene core via a Sonogashira coupling reaction, and a flexible multiple ring such as bicyclohexane, or cholesterol is connected to the biphenylethynyl via an esterification reaction. The dye compounds all have maximum emission wavelengths in methylene chloride concentrated around 525 nm, present green fluorescence, and show good dichroic colour ratios and ordered parameters in E7 liquid crystal. The liquid crystal compounds are in a liquid crystal intermediate phase within the range of 100-280° C., and may be used for manufacturing liquid crystal display products, especially as guest dyes for guest-host mode liquid crystal displays. The response time can be improved and a rapid response effect achieved when the compounds are added to E7 liquid crystal and used for a guest-host display mode.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: April 18, 2023
    Assignee: DALIAN UNIVERSITY OF TECHNOLOGY
    Inventors: Xiaolian Li, Rouchen Pan
  • Patent number: 11579507
    Abstract: A method for producing a cholesteric liquid crystal layer is a method that can produce a cholesteric liquid crystal layer whose reflection surface is not parallel to a substrate surface by a simple method. The method includes: a step 1 of forming a composition layer satisfying a condition 1, a condition 2, or a condition 3 on a substrate, using a liquid crystal composition including a liquid crystal compound; and a step 2 of subjecting the composition layer to a treatment for cholesterically aligning the liquid crystal compound in the composition layer to form a cholesteric liquid crystal layer.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: February 14, 2023
    Assignee: FUJIFILM Corporation
    Inventors: Keisuke Kodama, Shunya Katoh, Mitsuyoshi Ichihashi
  • Patent number: 11578270
    Abstract: A side chain type polymer liquid crystalline compound with which a light absorption anisotropic film having a high alignment degree can be formed, which includes a liquid crystalline composition, a light absorption anisotropic film which is formed of the liquid crystalline composition, a laminate, and an image display device. A liquid crystalline composition contains a side chain type polymer liquid crystalline compound and a dichroic substance, the side chain type polymer liquid crystalline compound is a copolymer having repeating units 1 and 2, the repeating unit 1 has a mesogenic group and an electron-withdrawing group having a Hammett's substituent constant ?p of greater than 0 at a terminal of the mesogenic group, and the repeating unit 2 has a mesogenic group and a group having a Hammett's substituent constant ?p of 0 or less at a terminal of the mesogenic group.
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: February 14, 2023
    Assignee: FUJIFILM Corporation
    Inventors: Hiroshi Matsuyama, Wataru Hoshino, Teruki Niori
  • Patent number: 11560517
    Abstract: A photoreactive liquid crystal composition containing (A) a photoreactive polymer liquid crystal which includes a photoreactive side chain in which at least one type of reaction selected from (A-1) photocrosslinking and (A-2) photoisomerization occurs, and (B) a low molecular weight liquid crystal. An optical element or display element is formed having a liquid crystal cell including the photoreactive liquid crystal composition.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: January 24, 2023
    Assignees: UNIVERSITY OF HYOGO, NAGAOKA UNIVERSITY OF TECHNOLOGY, NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Tomoyuki Sasaki, Hiroshi Ono, Nobuhiro Kawatsuki, Kohei Goto
  • Patent number: 11520186
    Abstract: A liquid crystal display capable of reducing the occurrence of defective display due to variations in the initial alignment direction of a liquid crystal alignment control film in a liquid crystal display of an IPS scheme, realizing the stable liquid crystal alignment, providing excellent mass productivity, and having high image quality with a higher contrast ratio. The liquid crystal display has a liquid crystal layer disposed between a pair of substrates, at least one of the substrates being transparent, and an alignment control film formed between the liquid crystal layer and the substrate. At least one of the alignment control films 109 comprises photoreactive polyimide and/or polyamic acid provided with an alignment control ability by irradiation of substantially linearly polarized light.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: December 6, 2022
    Assignee: Nissan Chemical Corporation
    Inventors: Yasushi Tomioka, Hidetoshi Abe, Katsumi Kondo
  • Patent number: 11505744
    Abstract: A polymer liquid crystal compound with which a light absorption anisotropic film having a high alignment degree can be formed, a liquid crystalline composition, a light absorption anisotropic film which is formed of the liquid crystalline composition, a laminate, and an image display device. The liquid crystalline composition includes a polymer liquid crystal compound which contains a repeating unit represented by Formula (1) and a dichroic substance. In Formula (1), a difference between a log P value of P1, L1, and SP1 and a log P value of M1 is 4 or greater. In Formula (1), P1 represents a main chain of the repeating unit, L1 represents a single bond or a divalent linking group, SP1 represents a spacer group, M1 represents a mesogenic group, and T1 represents a terminal group.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: November 22, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Hiroshi Matsuyama, Wataru Hoshino, Teruki Niori, Naoya Nishimura
  • Patent number: 11498989
    Abstract: A water-responsive interpenetrating polymer network, a preparation method and use thereof are provided. The water-responsive interpenetrating polymer network comprises an interpenetrating polymer network formed by a cholesteric liquid crystal polymer and a polyionic liquid; wherein the cholesteric liquid crystal polymer is formed by polymerization of a liquid crystal mixture; and the polyionic liquid contains a hydrophilic group or is a hydrophilic salt. The interpenetrating polymer network is water responsive without needs of activation with an alkaline solution, which simplifies the preparation process, and has stable water responsiveness performance after prolonged and/or repeated exposure to water. The water-responsive interpenetrating polymer network can be used to prepare light reflective coatings and reflective devices, and has higher commercial value.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: November 15, 2022
    Assignees: SOUTH CHINA NORMAL UNIVERSITY;, SHENZHEN GUOHUA OPTOELECTRONICS CO., LTD., ACADEMY OF SHENZHEN GUOHUA OPTOELECTRONICS
    Inventors: Guofu Zhou, Laurens De Haan, Zixuan Deng
  • Patent number: 11473014
    Abstract: A LC lens and a liquid-crystal medium used in said LC lens, wherein the medium contains one or more compounds of each of formulae I and II
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: October 18, 2022
    Assignee: MERCK PATENT GMBH
    Inventors: Arnold (Jer-Wei) Chang, Roger (Chih-chieh) Chang, Ray (Kuang-Ting) Chou
  • Patent number: 11466211
    Abstract: An object of the present invention is to provide a liquid crystal composition suitable for producing liquid crystal display elements which reduces the risk of the formation of droplet traces during production and allows a liquid crystal material to be ejected at a constant rate during an ODF process without deteriorating the properties of the liquid crystal display element, such as dielectric anisotropy, viscosity, nematic-phase upper-limit temperature, nematic-phase stability at a low temperature, and ?1, and the image sticking resistance of the display element, and a liquid crystal display element including the liquid crystal composition. Provided are a liquid crystal composition having a negative dielectric anisotropy, the liquid crystal composition including one or more compounds represented by General Formula (I), one or more compounds represented by General Formula (II), and the compound represented by Formula (IIIb-1) and a liquid crystal display element including the liquid crystal composition.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: October 11, 2022
    Assignee: DIC CORPORATION
    Inventors: Kazuki Kurisawa, Shinji Ogawa, Yoshinori Iwashita
  • Patent number: 11466214
    Abstract: A positive dielectric anisotropic liquid crystal composition includes one or more compounds of formula I and one or more compounds of formula II: wherein R1 represents cyclopropyl, cyclobutyl or cyclopentyl, R2, R3 and R4 are as defined in the specification, and a liquid crystal display device. The liquid crystal composition has positive dielectric properties, a high charge retention ratio, a low rotary viscosity, a fast response time, and especially a high transmittance, and is suitable for manufacturing a TFT-LCD with a high transmittance and a fast response.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: October 11, 2022
    Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.
    Inventors: Yapeng Huang, Yunxia Qiao, Gang Wen, Qing Cui, Guoliang Yun, Mingxia Wang, Sumin Kang
  • Patent number: 11459506
    Abstract: An additive includes an additive molecule having a structure represented by formula (I): wherein R1, A1, A2, Z1, K1, n1, and n2 are defined as in the specification.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: October 4, 2022
    Assignee: DAXIN MATERIALS CORPORATION
    Inventors: Chung-Hsien Wu, Yi-Chun Lin, Chun-Chih Wang
  • Patent number: 11429025
    Abstract: A salt represented by formula (I), a quencher, and a resist composition including the same: wherein R1, R2, R3 and R4 each represent a halogen atom, an alkyl fluoride group having 1 to 6 carbon atoms or a hydrocarbon group having 1 to 18 carbon atoms, —CH2— included in the hydrocarbon group may be replaced by —O— or —CO—; and m1, m2, m3 and m4 represent an integer of 0 to 4. When m1 is 2 or more, a plurality of R1 may be the same or different from each other. When m2 is 2 or more, a plurality of R2 may be the same or different from each other. When m3 is 2 or more, a plurality of R3 may be the same or different from each other. When m4 is 2 or more, a plurality of R4 may be the same or different from each other.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: August 30, 2022
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Katsuhiro Komuro, Yuki Takahashi, Koji Ichikawa
  • Patent number: 11414382
    Abstract: This compound, which absorbs long-wavelength active energy rays and generates with high-efficiency radicals and strong bases, and which has excellent reaction efficiency in a base generating chain reaction, is represented by formula (1), where, in formula (1), R1, R2, R3, R5 and R6 independently represent a hydroxy group, an alkoxy group, or an organic group other than those substituents, the R4's independently represent an organic group including a thioether bond, and ‘A’ represents a substituent represented by formula (1-1) or (1-2), where, in formula (1-1), R7 and R8 independently represent a hydrogen atom, an alkyl group or a heterocyclic group, and where, in formula (1-2), R9 and R10 independently represent an amino group or a substituted amino group. A photopolymerization initiator can include said compound; and a photosensitive resin composition can include said photopolymerization initiator.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: August 16, 2022
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Kiwamu Terada, Hirokazu Kuwabara