Patents Assigned to LG Chem, Ltd.
  • Electrochromic composite, electrochromic element comprising same, and manufacturing method for electrochromic element
    Patent number: 11891571
    Abstract: The present application relates to an electrochromic composite, an electrochromic device comprising the same, and a method for manufacturing an electrochromic device.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: February 6, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Bogyu Lim, Jiyoung Lee, Songrim Jang
  • Diffraction light guide plate and method of manufacturing diffraction light guide plate
    Patent number: 11892662
    Abstract: A diffraction light guide plate, including: a first diffraction substrate; and a second diffraction substrate provided on the first diffraction substrate. The first diffraction substrate includes a first diffraction grating layer on one surface and a second diffraction grating layer on an opposite surface. The second diffraction substrate includes a third diffraction grating layer on one surface and a stress compensation layer on an opposite surface. The first diffraction grating layer separates light having a wavelength of 550 nm or more and 700 nm or less, the second diffraction grating layer separates light having a wavelength of 400 nm or more and 550 nm or less, the third diffraction grating layer separates light having a wavelength of 450 nm or more and 650 nm or less, and the stress compensation layer has stress in the same direction as a direction of stress of the third diffraction grating layer.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: February 6, 2024
    Assignee: LG CHEM LTD.
    Inventors: Jung Hwan Yoon, Bu Gon Shin, Jeong Ho Park, Eun Kyu Her, So Young Choo
  • Positive Electrode Active Material for Secondary Battery, Method for Preparing Same, and Lithium Secondary Battery Including the Same
    Publication number: 20240038987
    Abstract: A positive electrode active material for a secondary battery including: a lithium complex transition metal oxide which contains nickel (Ni) and cobalt (Co), and contains at least one selected from the group consisting of manganese (Mn) and aluminum (Al); and a composite coating portion which is formed on a surface of the lithium complex transition metal oxide is provided. The lithium complex transition metal oxide has a nickel (Ni) content of 65 mol % or more with respect to the total transition metal content, and the composite coating portion contains cobalt (Co) and boron (B), and contains at least one selected from the group consisting of lanthanum (La), titanium (Ti), and aluminum (Al).
    Type: Application
    Filed: October 6, 2023
    Publication date: February 1, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Won Tae Kim, Jong Yeol Yu, Hong Kyu Park, Sun Sik Shin, Seong Hoon Kang
  • POLYIMIDE-BASED RESIN FILM, SUBSTRATE FOR DISPLAY DEVICE, AND OPTICAL DEVICE USING THE SAME
    Publication number: 20240034848
    Abstract: The present disclosure relates to a polyimide-based resin film wherein a thermal hysteresis gap at a temperature of 50° C. or more and 150° C. or less is 100 ?m or more and 500 ?m or less, and a substrate for display device, and an optical device using the same.
    Type: Application
    Filed: August 22, 2022
    Publication date: February 1, 2024
    Applicant: LG CHEM, LTD.
    Inventors: Ye Ji HONG, Mi Eun KANG
  • ORGANIC ELECTRIC ELEMENT, DISPLAY PANEL COMPRISING THE SAME AND DISPLAY DEVICE COMPRISING THE SAME
    Publication number: 20240040812
    Abstract: An organic electric element, a display panel and a display device including the organic electric element are provided. The organic electric element includes a first electrode; a second electrode; and an organic layer positioned between the first electrode and the second electrode. The organic layer includes a first layer having a first compound and a second compound, and a emitting layer having a third compound. A specific general formula related to energy levels of the component compounds is satisfied so that they may have excellent efficiency or lifespan.
    Type: Application
    Filed: June 8, 2023
    Publication date: February 1, 2024
    Applicants: LG Display Co., Ltd., LG Chem, Ltd.
    Inventors: Jicheol SHIN, Seonkeun YOO, Jeongdae SEO, Shinhan KIM, JooYong YOON, Jun YUN, DongHeon KIM, YongHan LEE, SungJae LEE
  • Method of Preparing Positive Electrode Active Material and Positive Electrode Active Material
    Publication number: 20240038983
    Abstract: A method of preparing a positive electrode active material, a positive electrode and a lithium battery including a positive electrode active material prepared by the same are disclosed herein. In some embodiments a method includes (A) sintering on a mixture of a positive electrode active material precursor and a lithium-containing raw material to prepare a pre-sintered product, (B) sintering a mixture of the pre-sintered product and an aluminum-containing raw material to prepare a lithium transition metal oxide, and (C) heating treating a dry mixture of the lithium transition metal oxide and a boron-containing raw material to form a coating layer.
    Type: Application
    Filed: January 11, 2022
    Publication date: February 1, 2024
    Applicants: LG Chem, Ltd., LG Chem, Ltd.
    Inventors: Jun Ho Eom, Dong Joon Ahn, Chae Jin Lim, Na Ri Park, Jun Won Lee, No Woo Kwak, Ji Hye Kim, Byoung Hun Jung
  • Light Modulating Device and Automobile
    Publication number: 20240036400
    Abstract: A light modulating device is disclosed herein. The light modulating device is applied to a sunroof and/or glass of an automobile. In some embodiments, a light modulating device configured to be disposed in a sunroof of an automobile includes a light modulation film layer, wherein the light modulation film layer includes a first anisotropic substrate, a second anisotropic substrate, and a liquid crystal layer, wherein each of the first and second anisotropic substrates has a first surface, wherein the first surfaces of the first and second anisotropic substrates face each other, wherein the liquid crystal layer is disposed between the first surfaces of the first and second anisotropic substrates, and wherein a slow axis of the first or second anisotropic substrate is disposed parallel to a width direction of the automobile.
    Type: Application
    Filed: July 22, 2021
    Publication date: February 1, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Min Jun Gim, Dong Hyun Oh, Jung Sun You, Jin Hong Kim, Jung Woon Kim
  • Preparation Method of Super Absorbent Polymer
    Publication number: 20240034844
    Abstract: The present disclosure relates to a preparation method of a super absorbent polymer. More specifically, it relates to a preparation method of a super absorbent polymer, which can improve a drying efficiency in the preparation process and realize excellent absorption-related properties of the prepared super absorbent polymer by using a specific inorganic material in the reassembly process.
    Type: Application
    Filed: December 8, 2022
    Publication date: February 1, 2024
    Applicant: LG Chem, Ltd.
    Inventor: Junwye Lee
  • Thermoplastic resin composition and molded article including the same
    Patent number: 11884810
    Abstract: The present invention relates to a thermoplastic resin composition and a molded article including the same. More specifically, the thermoplastic resin composition of the present invention includes 100 parts by weight of a base resin consisting of 10 to 30% by weight of an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A-1) including an acrylate rubber having an average particle diameter of 0.05 to 0.15 ?m, 20 to 40% by weight of an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A-2) including an acrylate rubber having an average particle diameter of 0.3 to 0.5 ?m, 0 to 35% by weight of an aromatic vinyl polymer (B), and 10 to 60% by weight of a polymethacrylate (C); and 0.5 to 10 parts by weight of a polyamide (D).
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: January 30, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Da Eun Sung, Tae Hoon Kim, Chun Ho Park, Yong Hee An, Wangrae Cho, Ho Hoon Kim, Jeongmin Jang
  • Reverse osmosis membrane, manufacturing method therefor, and water treatment module
    Patent number: 11883785
    Abstract: Provided is a reverse osmosis membrane comprising: a support layer comprising a support and a polysulfone layer; and an active layer, wherein a compression modulus is from 20 MPa to 40 MPa, to a method for manufacturing the same, and a water-treatment module.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: January 30, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Ayoung Lee, Yun Seok Choe, Chong Kyu Shin, Phill Lee
  • Thermoplastic resin composition
    Patent number: 11884808
    Abstract: The present invention relates to a thermoplastic resin composition, which includes a first copolymer formed by polymerizing a monomer mixture of a (meth)acrylate-based monomer, a vinyl cyan-based monomer and a maleimide-based monomer, and having a refractive index of 1.5170 or less and a glass transition temperature of 115.0° C. or more; and a second copolymer formed by graft-copolymerizing an aromatic vinyl-based monomer and a vinyl cyan-based monomer onto an acrylic rubber polymer, and the thermoplastic resin composition according to the present invention has improved heat resistance, colorability and scratch resistance.
    Type: Grant
    Filed: November 28, 2019
    Date of Patent: January 30, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Jung Tae Park, Dae Woo Lee, Jae Bum Seo, Gyu Sun Kim, Ji Uk Jang
  • Diol compound, polycarbonate, and preparation method of the same
    Patent number: 11884777
    Abstract: Provided is a diol compound of the following Chemical Formula 1, a polycarbonate comprising the diol compound, and a method of producing the polycarbonate:
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: January 30, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Young Young Hwang, Mooho Hong, Ki Jae Lee
  • System For Automatically Inspecting And Sorting Pellets
    Publication number: 20240024922
    Abstract: A system for automatically inspecting and sorting pellets while continuously transferring the pellets at a high speed to detect and effectively remove pellets that are defective. The system includes a sorter to photograph and inspect a first surface and a second surface of each of the pellets while transferring the pellets. The system separates and removes pellets that are determined as being defective and transfers and loads pellets having good quality to a designated position. The system further includes a sample inspector to receive the plurality of pellets that are determined as good products to manufacture a plate-shaped sample of a molded product and photograph a first surface and a second surface of the manufactured sample, thereby inspecting whether the sample of the molded product is defective.
    Type: Application
    Filed: August 3, 2021
    Publication date: January 25, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Hyun Tae Kim, Worl Yong Kim
  • Photocuring Generation-Gas Collecting Device
    Publication number: 20240027307
    Abstract: The present invention relates to a photocuring generation-gas collecting device, which collects gas generated from a sample when the sample is subjected to photocuring using various light wavelengths including ultraviolet rays.
    Type: Application
    Filed: June 10, 2022
    Publication date: January 25, 2024
    Applicant: LG Chem, Ltd.
    Inventors: So Yi Chung, Eunyeong Jin, Young Hee Lim
  • Polyethylene and Preparation Method Thereof
    Publication number: 20240026041
    Abstract: Provided are a polyethylene having excellent processability and capable of reducing an injection molding defect rate, and a method of preparing the same. The polyethylene has an integral value in the region where the Log Mw is 5.5 or more in a GPC curve, wherein the x-axis is log Mw and the y-axis is dw/dlogMw, of 9% or less of the total integral value: and has a ratio (Tc10/Tc40) of a crystallization temperature (Tc10) measured at a cooling rate of 10° C./min to a crystallization temperature (Tc40) measured at a cooling rate of 40° C./min of less than 1.04.
    Type: Application
    Filed: November 29, 2021
    Publication date: January 25, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Yeonji Choe, Jongchan Lee, Jeongkyu Lee, Christine Jisoo Song, Hee Su Oh, Jiwon Yoon, Yi Young Choi, Sung Joon Oh
  • POLYETHYLENE AND PREPARATION METHOD THEREOF
    Publication number: 20240026042
    Abstract: Provided are a polyethylene which is improved in terms of total volatile organic compounds (TVOCs) generated by low molecular weight polymers, thereby being suitable for fiber production, and a method of preparing the same.
    Type: Application
    Filed: November 29, 2021
    Publication date: January 25, 2024
    Applicant: LG CHEM, LTD.
    Inventors: Christine Jisoo SONG, Jiwon YOON, Yi Young CHOI
  • CONTINUOUS POLYMERIZATION REACTOR FOR SUPER ABSORBENT POLYMER AND CONTINUOUS POLYMERIZATION REACTION SYSTEM
    Publication number: 20240026040
    Abstract: A continuous polymerization reactor for super absorbent polymer is disclosed. The continuous polymerization reactor includes a cylindrical body; a discharge part with a diameter decreasing downward, positioned at a lower part of the body; an inlet positioned at an upper part of and connected to the body, into which a monomer composition is introduced; an outlet positioned at a lower part of the discharge part, from which hydrogel polymer is discharged; and a discharge valve opening or closing the outlet, wherein a ratio (H1/D1) of a sum (H1) of a height of the body and a height of the discharge part to a diameter (D1) of the body is 2 to 4. In addition, a continuous polymerization reaction system comprising the continuous polymerization reactor is also disclosed.
    Type: Application
    Filed: June 20, 2022
    Publication date: January 25, 2024
    Applicant: LG CHEM, LTD.
    Inventors: Gyunhyeok AHN, Yoon Jae MIN, Seul Ah LEE, Gicheul KIM, Hee Kwan PARK, Kyunghoon MIN
  • Olefin-Based Polymer
    Publication number: 20240026046
    Abstract: The present invention relates to an olefin-based polymer, particularly, to a low-density olefin-based polymer introducing a highly crystalline region and showing high mechanical rigidity.
    Type: Application
    Filed: March 23, 2022
    Publication date: January 25, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Sang Eun Park, Ji Yoon Woo, In Sung Park, Choong Hoon Lee, Ki Eun Kim, Rae Keun Gwak
  • Resin composition for bonding semiconductors, adhesive film for semiconductor using the same, dicing die bonding film, and method for dicing semiconductor wafer
    Patent number: 11879075
    Abstract: The present invention relates to a resin composition for bonding semiconductors including two types of curing catalyst mixtures together with a heat dissipation filler in which a specific functional group is introduced onto the surface, an adhesive film for semiconductor produced therefrom, a dicing die bonding film and a method for dicing a semiconductor wafer.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: January 23, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Wanjung Kim, Jong Min Jang, Byung Ju Choi, Kwang Joo Lee
  • Compound and organic light emitting device comprising same
    Patent number: 11878962
    Abstract: Provided is a compound of Chemical Formula 1: wherein X is O or S; L1 and L2 each independently is a direct bond or a substituted or unsubstituted arylene group; X1 is N or CR1, X2 is N or CR2, X3 is N or CR3, and at least two of X1 to X3 are N; R1 to R3 each independently is hydrogen, deuterium, or a substituted or unsubstituted alkyl, aryl or heteroaryl group; Ar1 and Ar2 each independently is hydrogen, deuterium, or a substituted or unsubstituted alkyl, aryl or heteroaryl group; positions at which ?is substituted with ?are asymmetric; m1, m2, n1 and n2 each independently is 0 or 1; and m1+m2 is 1, and n1+n2 is 1, and an organic light emitting device comprising the same.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: January 23, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Dong Uk Heo, Jin Joo Kim, Dong Hoon Lee, Jungoh Huh, Yongbum Cha, Wanpyo Hong