Patents by Inventor Hee Won CHOI

Hee Won CHOI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210334502
    Abstract: A fingerprint sensor includes a substrate, a sensor pixel disposed on the substrate and including a light sensing element through which a sensing current flows according to an amount of incident light, a light-blocking conductive layer disposed on the sensor pixel and including a plurality of holes, a first fingerprint pad disposed on the substrate, and a conductive connector connected to the first fingerprint pad and to which a predetermined voltage is applied. The light-blocking conductive layer is electrically connected to the conductive connector.
    Type: Application
    Filed: February 8, 2021
    Publication date: October 28, 2021
    Inventors: JEONG HEON LEE, YOUNG SIK KIM, JUNG HAK KIM, KYO WON KU, HEE YEON CHOI
  • Patent number: 11159669
    Abstract: A technique for controlling an electronic device thereof is provided. The technique includes, in response to an attachment device being selected by an external device from a list of attachment devices, receiving and storing mapping information in which data configured in a first communication format and data configured in a second communication format in relation to one function of the electronic device to which the attachment device is attached are mapped. In addition, in response to the data configured in the first communication format being received from an external device which is communicably connected with the attachment device, the data configured in the second communication format corresponding to the data configured in the first communication format based on the mapping information is acquired, and the data configured in the second communication format to the electronic device to control the one function of the electronic device to be performed is transmitted.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: October 26, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sun-hwa Kim, Sung-won Kim, Hee-bum Ahn, Joonoo Kim, Jin Ra, Jong-hyun Ryu, Kyung-ho Jeong, Yong-ho Kim, Yong-gook Park, Myung-sik Kim, Chan-hong Min, Jin-hyuk Jung, Woo-hyek Choi
  • Publication number: 20210328220
    Abstract: A negative electrode active material for a secondary battery including: natural graphite particles; and a carbon coating layer on a surface and in an inside of the natural graphite particles. The negative electrode active material for a secondary battery has a porosity of 3% to 13%.
    Type: Application
    Filed: January 16, 2020
    Publication date: October 21, 2021
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Hee Won CHOI, Je Young KIM, Sang Wook WOO, Li Lin PIAO
  • Publication number: 20210305551
    Abstract: A negative electrode active material which includes a core including artificial graphite, and a carbon coating layer disposed on the surface of the core, wherein an edge plane of the negative electrode active material has a specific surface area of 1.0 m2/g to 1.9 m2/g, a negative electrode including the same, and a secondary battery including the negative electrode.
    Type: Application
    Filed: August 16, 2019
    Publication date: September 30, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Hee Won CHOI, Jae Wook LEE
  • Publication number: 20210292322
    Abstract: An embodiment relates to a crystal polymorph of 8-bromo-2-(1-methylpiperidin-4-ylamino)-4-(4-phenoxyphenylamino)pyrido[4,3 -d]pyrimidin-5 (6H)-one hydrochloride which can effectively suppress FLT3 and has excellent stability even in a high temperature and humid environment, and a method for preparing same.
    Type: Application
    Filed: August 12, 2019
    Publication date: September 23, 2021
    Applicant: OSCOTEC INC.
    Inventors: Jung-Ho KIM, Jang-Sik CHOI, Hee Kyu LEE, Song-eun PARK, Dong-Sik JUNG, Yung-Geun CHOI, Jong-Sung KOH, Se-Won KIM, Jaekyoo LEE
  • Publication number: 20210296367
    Abstract: A display device includes a base substrate; an oxide semiconductor layer disposed on the base substrate; a first gate insulating layer disposed on a first channel region of the oxide semiconductor layer and that overlaps the first channel region thereof; a first upper gate electrode disposed on the first gate insulating layer; and an upper interlayer insulating layer disposed on the first upper gate electrode, the first upper gate electrode, and the oxide semiconductor layer, wherein the upper interlayer insulating layer includes a first upper interlayer insulating layer, a second upper interlayer insulating layer, and a third upper interlayer insulating layer, the first upper interlayer insulating layer includes silicon oxide, each of the second and third upper interlayer insulating layers include silicon nitride, and a hydrogen concentration in the second upper interlayer insulating layer is less than a hydrogen concentration in the third upper interlayer insulating layer.
    Type: Application
    Filed: October 26, 2020
    Publication date: September 23, 2021
    Inventors: Jung Yub SEO, Tetsuhiro TANAKA, Hee Won YOON, Shin Beom CHOI
  • Publication number: 20210273223
    Abstract: A negative electrode for a lithium secondary battery including a negative electrode active material layer. The negative electrode active material layer is formed by steps of coating a negative electrode mixture slurry including spheroidized natural graphite particles as a negative electrode active material on at least one surface of a negative electrode current collector, followed by drying and pressing the negative electrode mixture slurry on the at least one surface of the negative electrode current collector. The spheroidized natural graphite particles include a plurality of pores. The negative electrode active material layer has a Brunauer-Emmett-Teller (BET) specific surface area of the negative electrode active material layer after the pressing is larger than a BET specific surface area of the negative electrode active material layer before pressing. A difference in the BET specific surface area before and after pressing ranges from 0.9 m2/g to 1.2 m2/g.
    Type: Application
    Filed: January 31, 2020
    Publication date: September 2, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Lilin PIAO, Je-Young KIM, Sang-Wook WOO, Hee-Won CHOI
  • Patent number: 11108046
    Abstract: A negative electrode active material for a lithium secondary battery, which includes: natural graphite particles; and soft carbon particles having a BET specific surface area of 7.6 m2/g or more, wherein the natural graphite particles and the soft carbon particles are present in the negative electrode active material at a range of weight ratio of 78:22 to 92:8. Also a negative electrode containing the negative electrode active material and a lithium secondary battery containing the negative electrode.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: August 31, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Hee Won Choi, Dong Sub Jung
  • Publication number: 20210265630
    Abstract: An anode active material for a secondary battery that has improved cycle swelling properties and rapid charge performance, an anode comprising same, and a method for manufacturing same. The anode active material is a mixture of artificial graphite and spherical natural graphite, wherein the spherical natural graphite has an average particle diameter (D 50) of 12 ?m or less, with D 90-D 10 value ranging from 5 ?m to 12 ?m.
    Type: Application
    Filed: December 10, 2019
    Publication date: August 26, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Hee Won CHOI, Je Young KIM, Sang Wook WOO, Li Lin PIAO
  • Publication number: 20210184205
    Abstract: An anode active material for a secondary battery, which has improved cycle swelling properties and rapid charge performance, an anode comprising an anode active material for a secondary battery, and a method for manufacturing same. The anode active material is a mixture of scaly natural graphite and spherical natural graphite. An average particle diameter (D50) of the scaly natural graphite is 10 ?m to 15 ?m and an average particle diameter (D50) of the spherical natural graphite is 14 ?m or less.
    Type: Application
    Filed: January 3, 2020
    Publication date: June 17, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Hee Won CHOI, Je Young KIM, Sang Wook WOO, Li Lin PIAO
  • Publication number: 20210167398
    Abstract: A negative electrode for a lithium secondary battery including a negative electrode current collector and a negative electrode active material layer formed on at least one surface of the negative electrode current collector. The negative electrode active material layer includes a negative electrode active material including artificial graphite particles, and the negative electrode has a pore resistance Rp of 6? or less.
    Type: Application
    Filed: August 12, 2019
    Publication date: June 3, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Hee Won CHOI, Sang Wook WOO
  • Publication number: 20210122639
    Abstract: An anode active material for secondary batteries which has improved cycle swelling characteristics and rapid charge performance, an anode comprising same, and a method for manufacturing same, in which the anode active material is manufactured by modifying the surface of natural graphite particles. The natural graphite particles have a Dmax/Dmin value of 1.6 to 2.1 in the particle size distribution thereof and have, formed in the surface thereof, pores having a diameter of 0.5 ?m to 2.0 ?m.
    Type: Application
    Filed: January 17, 2020
    Publication date: April 29, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Hee Won CHOI, Je Young KIM, Sang Wook WOO, Li Lin PIAO
  • Publication number: 20210126248
    Abstract: A negative electrode active material for a lithium secondary battery, including: first negative electrode active material particles including first artificial graphite particles and a carbon coating layer on a surface of the first artificial graphite particles, wherein the carbon coating layer comprises hard carbon; and second negative electrode active material particles including second artificial graphite particles, wherein a difference between an average particle diameter D50 of the first negative electrode active material particles and an average particle diameter D50 of the second negative electrode active material particles is 5 ?m or less, and a temperature at an exothermic peak in differential thermogravimetric analysis of the carbon coating layer is in a range of 580° C. to 690° C.
    Type: Application
    Filed: April 2, 2019
    Publication date: April 29, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Hee Won CHOI, Jae Wook LEE, Eun Kyung KIM, Seung Youn CHOI, Je Young KIM
  • Publication number: 20210075016
    Abstract: A negative electrode active material for a lithium secondary battery which includes first negative electrode active material particles including artificial graphite particles and a carbon coating layer formed on the artificial graphite particle; and second negative electrode active material particles including natural graphite particles, wherein the first negative electrode active material particles have a larger average particle diameter (D50) than an average particle diameter (D50) of the second negative electrode active material particles, and a weight ratio of the first negative electrode active material particles and the second negative electrode active material particles is in a range of 70:30 to 95:5.
    Type: Application
    Filed: February 22, 2019
    Publication date: March 11, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Hee Won CHOI, Jae Wook LEE, Eun Kyung KIM, Seung Youn CHOI, Je Young KIM
  • Patent number: 10886514
    Abstract: The present invention relates to a separator for a lithium secondary battery, including a porous resin comprising one or more polar functional groups selected from the group consisting of —C—F; and —C—OOH and —C?O on a surface thereof, wherein, among the polar functional groups, a molar ratio of —C—OOH and —C?O to —C—F ranges from 0.2:0.8 to 0.8:0.2, and a method of manufacturing the same.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: January 5, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Sang Wook Woo, Oh Byong Chae, Hee Won Choi, Eun Kyung Kim
  • Publication number: 20200365875
    Abstract: A negative electrode active material for a lithium secondary battery, a negative electrode including the same, and a lithium secondary battery including the negative electrode. Specifically, the present invention relates to a negative electrode active material capable of minimizing changes in a structure and internal total pore volume of an electrode during rolling of the electrode by controlling the type and amount of carbon coated on a surface of an artificial graphite active material, a negative electrode including the same, and a lithium secondary battery including the negative electrode.
    Type: Application
    Filed: March 14, 2019
    Publication date: November 19, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Hee Won CHOI, Jae Wook LEE, Eun Kyung KIM, Seung Youn CHOI, Je Young KIM
  • Patent number: 10804539
    Abstract: A negative electrode for a lithium-metal secondary battery and a lithium-metal secondary battery including the same are provided which have an excellent life characteristic and have less irregular resin phases formed on the surface the negative electrode. The negative electrode includes a polymer layer arranged in a lattice structure having vacant spaces, so that the specific surface area of the negative electrode can be increased, a uniform current density distribution can thereby be achieved, the negative electrode has excellent life characteristics, and the formation of irregular resin phases can be suppressed.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: October 13, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Hee Won Choi, Sang Wook Woo, Oh Byong Chae, Eun Kyung Kim
  • Patent number: 10727478
    Abstract: A negative electrode for a lithium secondary battery using lithium metal for the negative electrode and a method for manufacturing the same. The method includes forming a protective layer for dendrite prevention of the negative electrode. The method for manufacturing a negative electrode may be achieved by a process including coating a slurry containing fluorocarbon and/or fluorinated metal dispersed in a solvent onto a lithium metal layer and drying the slurry.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: July 28, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Oh-Byong Chae, Sang-Wook Woo, Hee-Won Choi, Eun-Kyung Kim
  • Publication number: 20200203714
    Abstract: In the case in which a lithium metal is used in order to increase the capacity of a lithium secondary battery, reversibility of charging and discharging is reduced due to dendrite, etc. A lithium metal having LiF deposited thereon exhibits high stability, whereby reversibility of charging and discharging is increased. In addition, in the case in which LiF is deposited, the lithium metal, which is a negative electrode material, is not consumed, and the shape of a lithium metal electrode is not greatly changed.
    Type: Application
    Filed: December 27, 2017
    Publication date: June 25, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Oh-Byong CHAE, Sang-Wook WOO, Hee-Won CHOI, Eun-Kyung KIM
  • Patent number: 10622641
    Abstract: The present disclosure relates to a negative electrode for a secondary battery and a manufacturing method thereof, the negative electrode including a negative electrode current collector and a lithium metal. The present disclosure provides a negative electrode for a secondary battery including a negative electrode current collector; a lithium metal layer having a fine pattern formed on the negative electrode collector; and a protective layer formed along the surface of the lithium metal layer having the fine pattern, and a method for forming a lithium metal layer having a fine pattern formed thereon and the protective layer. In the negative electrode for a secondary battery according to the present disclosure, effective current density may be reduced and battery capacity may be maximized by forming a fine pattern on a surface of a lithium metal included in a negative electrode to increase an electrode specific surface area.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: April 14, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Sang Wook Woo, Jeong Woo Shon, Oh Byong Chae, Hee Won Choi, Eun Kyung Kim, Ki Hwan Kim