Patents by Inventor Woo-Jin Cho

Woo-Jin Cho 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: 20200020869
    Abstract: A method of manufacturing a flexible display device including preparing a support substrate, forming a first adhesive layer having a positive charge on the support substrate, the first adhesive layer including a polymer electrolyte and a graphene oxide, forming a second adhesive layer having a negative charge on the first adhesive layer, the second adhesive layer including a graphene oxide, forming a flexible substrate on the second adhesive layer, forming a display unit on the flexible substrate, and separating the support substrate and the flexible substrate.
    Type: Application
    Filed: May 6, 2019
    Publication date: January 16, 2020
    Inventors: Byunghoon KANG, Seung Jun MOON, Dongkyun SEO, Hee Kyun SHIN, Junho SIM, Woo Jin CHO
  • Publication number: 20190367648
    Abstract: The present invention provides a catalyst composition including a functionalizing agent of the following Formula 1 together with a rare earth metal compound, an alkylating agent, and a halogen compound, having good catalytic activity and polymerization reactivity and useful for the preparation of a conjugated diene-based polymer having high linearity and excellent processability, and a conjugated diene-based polymer prepared using the catalyst composition (X1)a—Sn—(X2)4-a??[Formula 1] wherein, a, X1, and X2 are the same as defined in the disclosure.
    Type: Application
    Filed: June 27, 2019
    Publication date: December 5, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Suk Youn Kang, Soo Young Choi, Woo Jin Cho, Suk Joon Yoo, Jeong Heon Ahn, Jin Sook Ryu
  • Patent number: 10481053
    Abstract: A method of detecting defects of a glass substrate includes cutting a glass mother substrate into a plurality of glass substrates, penetrating ions into an incision surface of the glass substrate to visualize defects of the incision surface, and photographing the defects of the incision surface to determine a bending strength of the glass substrate based on a size of the defects.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: November 19, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Cheol Min Park, Jeong Woo Park, Seung Kim, Seung Ho Kim, Hoi Kwan Lee, Woo Jin Cho, Hee Kyun Shin, Hyun Joon Oh
  • Patent number: 10475817
    Abstract: A thin-film transistor (TFT) array substrate is provided. The TFT array substrate includes a base substrate, a semiconductor layer disposed on the base substrate, an insulating layer disposed on the semiconductor layer, and a gate electrode disposed on the insulating layer. A top surface of a portion of the insulating layer overlapping the semiconductor layer in a plan view of the base substrate and a top surface of the gate electrode are placed on the same level.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: November 12, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Byoung Kwon Choo, Joon Hwa Bae, Hyun Jin Cho, Jun Hyuk Cheon, Zi Yeon Yoon, Woo Jin Cho, Sung Hwan Choi, Jeong Hye Choi
  • Patent number: 10438976
    Abstract: A method for manufacturing a display device includes forming a first gate metal wire on a substrate, forming a first insulation layer that covers the first gate metal wire, forming a second gate metal wire on the first insulation layer, forming a second main insulation layer that covers the second gate metal wire, forming a second auxiliary insulation layer on the second main insulation layer, forming an exposed portion of an upper surface of the second main insulation layer by polishing the second auxiliary insulation layer, and forming a first data metal wire on the second main insulation layer and the second auxiliary insulation layer.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: October 8, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Jin Cho, Joon-Hwa Bae, Byoung Kwon Choo, Byung Hoon Kang, Kwang Suk Kim, Woo Jin Cho, Jun Hyuk Cheon
  • Patent number: 10424762
    Abstract: A method for manufacturing a transparent display device includes: providing a transparent flexible substrate on a support substrate; forming a display unit on a front side of the transparent flexible substrate; separating the transparent flexible substrate from the support substrate; and cleaning a rear side of the transparent flexible substrate with plasma.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: September 24, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byung Hoon Kang, Seung Jun Moon, Hee Kyun Shin, Min-Woo Lee, Woo Jin Cho
  • Publication number: 20190189973
    Abstract: A method for manufacturing a transparent display device includes: providing a transparent flexible substrate on a support substrate; forming a display unit on a front side of the transparent flexible substrate; separating the transparent flexible substrate from the support substrate; and cleaning a rear side of the transparent flexible substrate with plasma.
    Type: Application
    Filed: October 9, 2018
    Publication date: June 20, 2019
    Inventors: Byung Hoon Kang, Seung Jun Moon, Hee Kyun Shin, Min-Woo Lee, Woo Jin Cho
  • Publication number: 20190157627
    Abstract: In a method of manufacturing a display device, the method includes: forming a conductive layer on a base; forming an organic layer, with a hole partially exposing the conductive layer, on the conductive layer; polishing an upper surface of the organic layer; and forming a light emitting element on the polished organic layer.
    Type: Application
    Filed: June 13, 2018
    Publication date: May 23, 2019
    Inventors: Joon Hwa BAE, Hyun Jin CHO, Byoung Kwon CHOO, Woo Jin CHO
  • Publication number: 20190148414
    Abstract: A method for manufacturing a display device includes forming a first gate metal wire on a substrate, forming a first insulation layer that covers the first gate metal wire, forming a second gate metal wire on the first insulation layer, forming a second main insulation layer that covers the second gate metal wire, forming a second auxiliary insulation layer on the second main insulation layer, forming an exposed portion of an upper surface of the second main insulation layer by polishing the second auxiliary insulation layer, and forming a first data metal wire on the second main insulation layer and the second auxiliary insulation layer.
    Type: Application
    Filed: January 9, 2019
    Publication date: May 16, 2019
    Inventors: Hyun Jin CHO, Joon-Hwa BAE, Byoung Kwon CHOO, Byung Hoon KANG, Kwang Suk KIM, Woo Jin CHO, Jun Hyuk CHEON
  • Publication number: 20190140216
    Abstract: A display device includes a base, a light emitting device on a first surface of the base, and a plate-like inorganic layer on a second surface of the base, the plate-like inorganic layer including a first plate-like inorganic particle with a first size and a second plate-like inorganic particle with a second size different from the first size.
    Type: Application
    Filed: May 1, 2018
    Publication date: May 9, 2019
    Inventors: Hee Kyun Shin, Seung Jun Moon, Byung Hoon Kang, Min Woo Lee, Woo Jin Cho
  • Patent number: 10253119
    Abstract: The present invention provides a method for preparing a conjugated diene-based polymer including preparing a mixture of a molecular weight modifier and a conjugated diene-based monomer; and polymerization reacting the mixture using a catalyst composition including a lanthanide rare earth element-containing compound, modified methylaluminoxane, a halogen compound and an aliphatic hydrocarbon-based solvent, and therefore, capable of preparing a conjugated diene-based polymer having a high cis-1,4-bond content ratio, high linearity and narrow molecular weight distribution.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: April 9, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Won Hee Kim, Hyo Jin Bae, Kyoung Hwan Oh, Woo Jin Cho, Jeong Heon Ahn
  • Patent number: 10204935
    Abstract: A method for manufacturing a display device includes forming a first gate metal wire on a substrate, forming a first insulation layer that covers the first gate metal wire, forming a second gate metal wire on the first insulation layer, forming a second main insulation layer that covers the second gate metal wire, forming a second auxiliary insulation layer on the second main insulation layer, forming an exposed portion of an upper surface of the second main insulation layer by polishing the second auxiliary insulation layer, and forming a first data metal wire on the second main insulation layer and the second auxiliary insulation layer.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: February 12, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Jin Cho, Joon-Hwa Bae, Byoung Kwon Choo, Byung Hoon Kang, Kwang Suk Kim, Woo Jin Cho, Jun Hyuk Cheon
  • Patent number: 10199405
    Abstract: A method of manufacturing a transistor display panel and a transistor display panel, the method including forming a polycrystalline silicon layer on a substrate; forming an active layer by patterning the polycrystalline silicon layer; forming a first insulating layer covering the substrate and the active layer; exposing the active layer by polishing the first insulating layer using a polishing apparatus; and forming a second insulating layer that contacts the first insulating layer and the active layer, wherein exposing the active layer by polishing the first insulating layer includes coating a first slurry on a surface of the first insulating layer, the first slurry reducing a polishing rate of the active layer.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: February 5, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Joon-Hwa Bae, Byoung Kwon Choo, Byung Hoon Kang, Woo Jin Cho, Hyun Jin Cho, Jun Hyuk Cheon, Jee-Hyun Lee
  • Publication number: 20180368270
    Abstract: A cover window includes: a flat portion including in a top plan view, first and second sides respectively extending in first and second directions; a top curved portion contacting the first side and extending therefrom in the second direction; a left curved portion contacting the second side and extending therefrom in the first direction; and a first corner curved portion which connects the top and left curved portions to each other. In cross-section, the first corner curved portion includes: and a bottom end surface which connects inner and outer surfaces to each other, in the top plan view, the bottom end surface includes: a central portion having a first width, and a peripheral portion which is disposed outside the central portion in the first and second directions, the peripheral portion having a second width smaller than the first width.
    Type: Application
    Filed: March 27, 2018
    Publication date: December 20, 2018
    Inventors: Hyun Seung SEO, Jong Hwan CHO, Woo Jin CHO
  • Publication number: 20180358386
    Abstract: A thin-film transistor (TFT) array substrate is provided. The TFT array substrate includes a base substrate, a semiconductor layer disposed on the base substrate, an insulating layer disposed on the semiconductor layer, and a gate electrode disposed on the insulating layer. A top surface of a portion of the insulating layer overlapping the semiconductor layer in a plan view of the base substrate and a top surface of the gate electrode are placed on the same level.
    Type: Application
    Filed: May 4, 2018
    Publication date: December 13, 2018
    Inventors: BYOUNG KWON CHOO, Joon Hwa BAE, Hyun Jin CHO, Jun Hyuk CHEON, Zi Yeon YOON, Woo Jin CHO, Sung Hwan CHOI, Jeong Hye CHOI
  • Publication number: 20180312669
    Abstract: The present invention provides a modifier, a modified and conjugated diene-based polymer which is modified using the same, and a rubber composition including the modified and conjugated diene-based polymer, and more particularly, a modifier which includes a compound represented by Formula 1 and is capable of improving the mixing properties between a conjugated diene-based polymer and a filler, a modified and conjugated diene-based polymer which is modified using the same, and a rubber composition including the modified and conjugated diene-based polymer.
    Type: Application
    Filed: June 30, 2017
    Publication date: November 1, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Suk Youn Kang, Hyo Jin Bae, Hee Jung Jeon, Jeong Heon Ahn, Heung Yeal Choi, Kyoung Hwan Oh, Woo Jin Cho
  • Patent number: 10040876
    Abstract: The present invention provides 1,4-cis polybutadiene having high linearity with an ?S/R value of 1 or greater at 100° C., and accordingly, is capable of reducing resistance properties, particularly rolling resistance, and greatly enhancing fuel efficiency properties when used in a rubber composition.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: August 7, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Kyoung Hwan Oh, Won Hee Kim, Hyo Jin Bae, Jeong Heon Ahn, Woo Jin Cho, Suk Youn Kang
  • Patent number: 10043860
    Abstract: A method of manufacturing a display device includes: forming an active layer on a substrate; forming a first insulation layer covering the active layer; forming a gate metal line on the first insulation layer; forming a third insulation layer covering the gate metal line and including a silicon oxide; forming a fourth insulation layer including a silicon nitride on the third insulation layer; forming a fifth insulation layer including a silicon oxide on the fourth insulation layer; arranging a blocking member over a region in which the active layer and the gate metal line overlap; forming a fifth auxiliary insulation layer by doping nitrogen ions in the fifth insulation layer; and exposing a part of an upper surface of the fourth insulation layer by removing a portion of a fifth main insulation layer of the fifth insulation layer which does not overlap the fifth auxiliary insulation layer.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: August 7, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byung Hoon Kang, Kwang Suk Kim, Joon-Hwa Bae, Woo Jin Cho, Hyun Jin Cho, Jun Hyuk Cheon, Byoung Kwon Choo
  • Publication number: 20180136095
    Abstract: A method of detecting defects of a glass substrate includes cutting a glass mother substrate into a plurality of glass substrates, penetrating ions into an incision surface of the glass substrate to visualize defects of the incision surface, and photographing the defects of the incision surface to determine a bending strength of the glass substrate based on a size of the defects.
    Type: Application
    Filed: November 17, 2017
    Publication date: May 17, 2018
    Inventors: Cheol Min Park, Jeong Woo Park, Seung Kim, Seung Ho Kim, Hoi Kwan Lee, Woo Jin Cho, Hee Kyun Shin, Hyun Joon Oh
  • Publication number: 20180114819
    Abstract: A method of manufacturing a display device includes: forming an active layer on a substrate; forming a first insulation layer covering the active layer; forming a gate metal line on the first insulation layer; forming a third insulation layer covering the gate metal line and including a silicon oxide; forming a fourth insulation layer including a silicon nitride on the third insulation layer; forming a fifth insulation layer including a silicon oxide on the fourth insulation layer; arranging a blocking member over a region in which the active layer and the gate metal line overlap; forming a fifth auxiliary insulation layer by doping nitrogen ions in the fifth insulation layer; and exposing a part of an upper surface of the fourth insulation layer by removing a portion of a fifth main insulation layer of the fifth insulation layer which does not overlap the fifth auxiliary insulation layer.
    Type: Application
    Filed: May 25, 2017
    Publication date: April 26, 2018
    Inventors: Byung Hoon KANG, Kwang Suk KIM, Joon-Hwa BAE, Woo Jin CHO, Hyun Jin CHO, Jun Hyuk CHEON, Byoung Kwon CHOO