Patents Examined by Eli D Strah
  • Patent number: 9920249
    Abstract: A liquid crystal composition, a liquid crystal film and a display device are provided. The liquid crystal composition can be uniformly aligned with no problems such as dewetting in an operation of aligning horizontally alignable liquid crystals. Also, a state of the aligned liquid crystal compound can be stably maintained.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: March 20, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Dae Hee Lee, Sin Young Kim, Da Mi Lee, Moon Soo Park
  • Patent number: 9904118
    Abstract: A frame sealant and a process for preparing the same, and a liquid crystal display panel and a liquid display containing the frame sealant. The frame sealant comprises a curing resin, an anion exchange resin, a photoinitiator, a heat curing agent, a coupling agent, an organic filler, and an inorganic filler.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: February 27, 2018
    Assignees: Beijing BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventor: Ang Xiao
  • Patent number: 9903990
    Abstract: Provided are a pressure-sensitive adhesive, a polarizing plate, and a liquid crystal display device. The pressure-sensitive adhesive may be used to provide a polarizing plate which has a tensile modulus that varies in a thickness direction, and for example, which has a smaller thickness and a lighter weight, and also satisfies all of the physical properties required for the polarizing plate such as durability, water resistance, workability and light leakage preventability, and a liquid crystal display device including the same.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: February 27, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Sung Soo Yoon, No Ma Kim, In Ho Hwang, In Kyu Park, Min Joon Kim
  • Patent number: 9874772
    Abstract: A flexible display and method of manufacturing the same are disclosed. In one aspect, the flexible display includes a display panel configured to display images, a window substrate disposed on a first surface of the display panel, and a lower passivation film attached to a second surface of the display panel opposing the first surface. The flexible display can also include a lower adhesive layer interposed between the display panel and the lower passivation film. The lower adhesive layer can include a plurality of isolated-pattern portions and a peripheral portion surrounding the isolated-pattern portions.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: January 23, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Youn Joon Kim, Jung Hun Lee, Sang Jo Lee, Jusuck Lee, Kyung Min Choi
  • Patent number: 9816011
    Abstract: The present invention relates to a pressure sensitive adhesive composition, a protective film for optical elements, an optical element and a liquid crystal display device. The present invention may provide a pressure sensitive adhesive composition and a protective film for optical elements, having a high peel force at a low rate and a low peel force at a high rate, the balance of which is excellently maintained and showing excellent wettablity to an adherend, durability, repeelability, transparency and antistatic performance.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: November 14, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Kee Young Kim, Jeong Min Ha, No Ma Kim
  • Patent number: 9816016
    Abstract: The present invention relates to a pressure-sensitive adhesive composition, a polarizing plate and a liquid crystal display. In the present invention, provided is a pressure-sensitive adhesive which can effectively prevent the light leakage resulting from dimensional changes of the polarizing plate, and the like, and exhibit excellent endurance reliability even when it is used or stored for a long time. Further, in the present invention, provided is the pressure-sensitive adhesive composition or the pressure-sensitive adhesive which can exhibit excellent physical properties, such as removability, workability, and the like.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: November 14, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Sung Soo Yoon, No-Ma Kim, In Ho Hwang, Jeong Min Ha, In Kyu Park, Min Ki Lee
  • Patent number: 9803117
    Abstract: The invention discloses a frame-sealing agent, a display panel and a display device. The frame-sealing agent comprises an acrylic resin, an epoxy resin, a thermal curing agent and an ultraviolet photoinitiator, wherein the frame-sealing agent further comprises a compound which decomposes to produce a gas under a condition of light irradiation, heating or high temperature. In the invention, by providing a compound that decomposes to produce a gas under a condition of light irradiation, heating or high temperature, when the frame-sealing agent is cured, the compound decomposes to produce a gas with the effect of light irradiation, heating or high temperature. The light leak of the display screen at the position of backlight is obstructed by the gas.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: October 31, 2017
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Yupeng Wang, Hongming Zhan, Honglin Zhang, Chao Tian
  • Patent number: 9796843
    Abstract: A material from which a cured film exhibiting high solvent resistance, liquid crystal-alignment performance, heat resistance and high transparency can be formed. A composition for forming a thermoset film having photo alignment properties, the composition comprising: a component (A) that is an acrylic copolymer having a photodimerizing moiety and a thermal cross-linking moiety; a component (B) that is an acrylic polymer having at least one of a C2-5 alkyl ester group and a C2-5 hydroxyalkyl ester group and at least one of a carboxy group and a phenolic hydroxy group; and a component (C) that is a cross-linking agent.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: October 24, 2017
    Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Tadashi Hatanaka, Isao Adachi
  • Patent number: 9796822
    Abstract: The present invention relates to an optical film that comprises a block copolymer that comprises a vinyl polymer block containing styrene or a derivative thereof, and a poly-dimethylsiloxane block, a retardation film using the same, a method of manufacturing them, and a liquid crystal display comprising the films.
    Type: Grant
    Filed: April 14, 2008
    Date of Patent: October 24, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Hee-Jung Kim, Dong-Ryul Kim, Young-Whan Park, Dae-Woo Nam, Boong-Goon Jeong
  • Patent number: 9798185
    Abstract: The invention relates to an acrylic adhesive composition, more particularly, to an adhesive composition which: specifies the contents of a (meth)acrylic ester-based monomer and an aromatic group-containing monomer of an acrylic copolymer as a composition having little or no difference of birefringence; has excellent durability; and can reduce light leakage due to flexure by mixing a crosslinkable functional group-containing acrylic copolymer (A) and an acrylic copolymer (B) which does not contain the crosslinkable functional group, in a ratio of 1:9 to 5:5.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: October 24, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Se Ra Kim, Kee Young Kim, Sung Soo Yoon, Min Ki Lee, No Ma Kim, In Cheon Han
  • Patent number: 9796883
    Abstract: The present invention provides an excellent optical pressure-sensitive adhesive sheet having an excellent adhesion property to an optical member. The present invention relates to an optical pressure-sensitive adhesive sheet comprising a pressure-sensitive adhesive layer, wherein a relative dielectric constant at a frequency of 1 MHz is 5 to 10, and an adhesion strength to a glass, which is measured with a peel angle of 180° and a tensile speed of 300 mm/min after 30 min of laminating the optical pressure-sensitive adhesive sheet to the glass, is 3 N/20 mm to 15 N/20 mm.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: October 24, 2017
    Assignee: NITTO DENKO CORPORATION
    Inventors: Hirofumi Katami, Tomohide Banba, Shou Takarada, Masato Fujita, Takahiro Nonaka, Hiroaki Kishioka
  • Patent number: 9796791
    Abstract: Regioselectively substituted cellulose esters having a plurality of aryl-acyl substituents and a plurality of alkyl-acyl substituents are disclosed along with methods for making the same. Such cellulose esters may be suitable for use in optical films, such as optical films having certain Nz values, ?A optical films, and/or +C optical films. Optical films prepared employing such cellulose esters have a variety of commercial applications, such as, for example, as compensation films in liquid crystal displays and/or waveplates in creating circular polarized light used in 3-D technology.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: October 24, 2017
    Assignee: EASTMAN CHEMICAL COMPANY
    Inventors: Charles Michael Buchanan, Michael Eugene Donelson, Elizabeth Guzman-Morales, Peter Borden Mackenzie, Bin Wang
  • Patent number: 9798179
    Abstract: The present invention provides a liquid crystal display device that includes a horizontal alignment film, stabilizes liquid crystal alignment by the PSA technique, can suppress the increase in power consumption, reduction in contrast, and image sticking in display, and has long-term reliability. The present invention is a liquid crystal display device including a pair of substrates, a liquid crystal layer interposed between the pair of substrates, a horizontal alignment film formed on at least one of the pair of substrates, and a polymer layer which is formed on the horizontal alignment film and controls the alignment of adjacent liquid crystal molecules, wherein the polymer layer is formed by the polymerization of at least one or more kinds of monomers added into the liquid crystal layer, and at least one of the one or more kinds of monomers is polymerized by itself functioning as a polymerization initiator by being irradiated with light.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: October 24, 2017
    Assignee: MERCK PATENT GMBH
    Inventors: Koichi Miyachi, Isamu Miyake
  • Patent number: 9798184
    Abstract: A pressure-sensitive adhesive composition is provided. The pressure-sensitive adhesive composition shows stable antistatic performance, and in particular, stably maintains its antistatic performance even when the pressure-sensitive adhesive composition is kept for an extended time under extreme conditions or conditions in which environmental changes are severe, and also has excellent general physical properties such as pressure-sensitive adhesive properties, durability and workability.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: October 24, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Sung Soo Yoon, No Ma Kim, Kee Young Kim, Min Ki Lee, Han Na Chi
  • Patent number: 9791608
    Abstract: The present invention relates to a polarizing plate and a liquid crystal display device. In the present invention, the polarizing plate is lightweight and has a small thickness and excellent properties including durability, water resistance, workability, pressure-sensitive adhesion and light leakage prevention ability; and the liquid crystal display device including the same are provided.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: October 17, 2017
    Assignee: LG Chem, Ltd.
    Inventors: In Ho Hwang, Ki Ok Kwon, No Ma Kim, Sung Hyun Nam, In Kyu Park, Sung Soo Yoon, Kyun Il Rah, Min Ki Lee
  • Patent number: 9791745
    Abstract: 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: Grant
    Filed: August 26, 2013
    Date of Patent: October 17, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Seung-Yeon Hwang, Sung-Ho Chun, Dong-Woo Yoo, Hyeong-Bin Jang
  • Patent number: 9790408
    Abstract: The present invention relates to a polarizing plate characterized in that pressures-sensitive adhesives used in the upper and lower polarizing plates have different elastic properties and a liquid crystal display device comprising the same. More specifically, the present invention relates to a polarizing plate with improved light leakage phenomenon in accordance with bend of liquid crystal panels, characterized in that as slid distances of pressure-sensitive adhesives on the polarizing plate having the pressure-sensitive adhesive layer formed thereon and bonded to a glass plate with a contact area of 1 cm×1 cm at the time of applying a load of 1,000 gf at room temperature (25° C.) for 1,000 seconds, the difference between the slid distance X1 of pressure-sensitive adhesive for the upper polarizing plate and the slid distance X2 of pressure-sensitive adhesive for the lower polarizing plate is 50 to 500 ?m.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: October 17, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Se Ra Kim, In Cheon Han, Seung Joon Park
  • Patent number: 9644109
    Abstract: Disclosed is a sealant composition, a liquid crystal device and a method for preventing liquid crystal contamination using the sealant composition. The sealant composition consists of 20-30 parts by weight of an ultraviolet polymerizable double bond monomer, 15-20 parts by weight of a heat polymerization monomer, 5-20 parts by weight of a polymerizable oligomer, 0.1-5 parts by weight of a photoinitiator, 10-20 parts by weight of a heat curing agent and 0-20 parts by weight of a particulate additive, wherein said polymerizable oligomer is poly(ethylene glycol) diacrylate or derivatives thereof. Through the reaction between the polymerizable oligomers and the polymer of the ultraviolet polymerizable double bond monomers to generate a reticular high molecular polymer, the anchoring effect of the polymer on the surrounding unreacted heat polymerization monomers is effectively enhanced, thereby reducing the contamination of the crystal liquid by the sealant.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: May 9, 2017
    Assignee: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Renwei Guo, Dong Chen
  • Patent number: 9588256
    Abstract: A color material dispersion liquid comprising a color material represented by the following general formula (I), a dispersant, and a solvent having a solubility of the color material of 0.1 (mg/10 g solvent) or less at 23° C., having excellent solvent resistance and excellent electrical reliability; a color resin composition for color filters, which can form a color layer that has high contrast, excellent solvent resistance and excellent electrical reliability; a color filter formed with the color resin composition for color filters; a liquid crystal display device having the color filter; and an organic light-emitting display device having the color filter.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: March 7, 2017
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventor: Masato Okada
  • Patent number: 9587147
    Abstract: The invention relates to pressure-sensitive adhesive compositions which comprise (A) base resin, (B) the first multifunctional compound and (C) the second multifunctional compound that can react with the first multifunctional compound and realizes an interpenetrating network structure in the cured state, and relates to polarizers and liquid crystal displays comprising the same. The invention shows excellent durability under high temperature and/or high humidity condition and good properties such as machinability, removability and workability. The invention can provide the adhesive compositions efficiently suppressing light leakage generated in the liquid crystal displays. In particular, the adhesive compositions of the invention prevent light leakage even when being used in large display devices of 20 inches or more.
    Type: Grant
    Filed: January 7, 2009
    Date of Patent: March 7, 2017
    Assignee: LG Chem, Ltd.
    Inventors: No Ma Kim, In Ho Hwang, Jeong Min Ha