Patents by Inventor Byoung-Kwon Choo

Byoung-Kwon Choo 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: 20210008685
    Abstract: A method of manufacturing a display and a chemical mechanical polishing method which employ a chemical mechanical polishing apparatus that includes a conveyor belt to transfer a substrate, a polishing head disposed on the conveyor belt, and a body part which moves the polishing head and supplies a slurry to the polishing head. The polishing head includes a first polishing part including a first polishing pad surrounding a first slurry outlet, and a second polishing part surrounding the first polishing part and including a second polishing pad. A second slurry outlet is formed between the first polishing part and the second polishing part, and the first polishing part and the second polishing part are movable independently of each other in a direction substantially perpendicular to the substrate.
    Type: Application
    Filed: July 10, 2020
    Publication date: January 14, 2021
    Applicant: Samsung Display Co., LTD.
    Inventors: Jung-Gun NAM, Seung-Bae KANG, Heesung YANG, Bonggu KANG, Joon-Hwa BAE, Woo-Jin CHO, Byoung-Kwon CHOO
  • Publication number: 20200287171
    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: May 26, 2020
    Publication date: September 10, 2020
    Inventors: Joon Hwa BAE, Hyun Jin CHO, Byoung Kwon CHOO, Woo Jin CHO
  • Patent number: 10700310
    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: Grant
    Filed: June 13, 2018
    Date of Patent: June 30, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joon Hwa Bae, Hyun Jin Cho, Byoung Kwon Choo, Woo Jin Cho
  • Patent number: 10654130
    Abstract: A polarization module and a laser exposure apparatus have a polarization module including a first lens and a second lens that reduce a one-directional length of a cross-section of an incident laser beam having an optical axis. A polarization beam splitter divides the laser beam passing through the first and second lenses into two laser beams that are polarized in different directions with respect to each other. A first prism lens and a second prism lens emit an output laser beam by controlling the two laser beams that are divided by the polarization beam splitter to positions that are symmetrical with respect to the optical axis. At least one half wave plate is disposed between the polarization beam splitter and the first prism lens.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: May 19, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD
    Inventors: Joo Woan Cho, Byoung Ho Cheong, Oleg Prudnikov, Jeong Kyun Na, Joon-Hwa Bae, Seung Hwan Lee, Byoung Kwon Choo
  • Publication number: 20200144098
    Abstract: A substrate-supporting device may include a porous chuck disposed in a frame, an adsorption pad disposed on the porous chuck, and an adhesive layer disposed between the porous chuck and the adsorption pad. The adsorption pad may include an elastic layer and a porous layer combined with the elastic layer. Each of the adhesive layer, the elastic layer and the porous layer may include through-portions respectively extending in a thickness direction. The adsorption pad may have a value of 100 or less based on Asker C hardness.
    Type: Application
    Filed: September 18, 2019
    Publication date: May 7, 2020
    Inventors: Byoung Kwon CHOO, Seungbae KANG, Joon-Hwa BAE, Bonggu KANG, Jeong Min PARK, Heesung YANG, Woo Jin CHO
  • Publication number: 20200127242
    Abstract: A display device includes a planarization layer covering transistors in a display area on a substrate, an organic light emitting diode on the planarization layer, a pad electrode in a non-display area on the substrate surrounding the display area, and a sacrificial layer remnant capping a side surface of the pad electrode.
    Type: Application
    Filed: September 25, 2019
    Publication date: April 23, 2020
    Inventors: Heesung YANG, Seung Bae KANG, Bonggu KANG, Tae Wook KANG, Joon-Hwa BAE, Woojin CHO, Byoung Kwon CHOO
  • Publication number: 20200035715
    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: October 3, 2019
    Publication date: January 30, 2020
    Inventors: BYOUNG KWON CHOO, Joon Hwa Bae, Hyun Jin Cho, Jun Hyuk Cheon, Zi Yeon Yoon, Woo Jin Cho, Sung Hwan Chol, Jeong Hye Choi
  • 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: 10347484
    Abstract: A laser crystallizing apparatus includes a laser generator that generates an incident laser beam that includes a P polarization component and an S polarization component, an optical system that converts the incident laser beam to generate an emitted laser beam, and a stage on which is mounted a target substrate with a target thin film which is laser-crystallized by being irradiated by the emitted laser beam. The optical system includes at least one half wave plate (HWP) that shifts a polarization axis direction of the incident laser beam received from the laser generator, at least one mirror that fully reflects the laser beam, and at least one polarization beam splitter (PBS) which reflects a part of the laser beam and transmits the other part of the laser beam.
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: July 9, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Joo Woan Cho, Jeong Kyun Na, Seung Hwan Lee, Joon-Hwa Bae, Byoung Ho Cheong, Byoung Kwon Choo, Oleg Prudnikov
  • 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
  • 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: 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
  • 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
  • Patent number: 9982165
    Abstract: A polishing slurry for silicon, a method of polishing polysilicon, and a method of manufacturing a thin film transistor substrate, the slurry including a polishing particle; a dispersing agent including an anionic polymer, a hydroxyl acid, or an amino acid; a stabilizing agent including an organic acid, the organic acid including a carboxyl group; a hydrophilic agent including a hydrophilic group and a hydrophobic group, and water, wherein the polishing particle is included in the polishing slurry in an amount of about 0.1% by weight to about 10% by weight, based on a total weight of the slurry, a weight ratio of the polishing particle and the dispersing agent is about 1:0.01 to about 1:0.2, a weight ratio of the polishing particle and the stabilizing agent is about 1:0.001 to about 1:0.1, and a weight ratio of the polishing particle and the hydrophilic agent is about 1:0.01 to about 1:3.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: May 29, 2018
    Assignees: SAMSUNG DISPLAY CO., LTD., UBmaterials Inc.
    Inventors: Byoung-Kwon Choo, Jin-Hyung Park, Jeong-Kyun Na, Joon-Hwa Bae, Byoung-Ho Cheong, Joo-Woan Cho, In-Sun Hwang
  • 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
  • Publication number: 20180108684
    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: September 13, 2017
    Publication date: April 19, 2018
    Inventors: Hyun Jin CHO, Joon-Hwa BAE, Byoung Kwon CHOO, Byung Hoon KANG, Kwang Suk KIM, Woo Jin CHO, Jun Hyuk CHEON
  • Publication number: 20180043501
    Abstract: A substrate polishing system includes: a polishing machine and a substrate transporter. The polishing machine includes: a lower surface plate to which a substrate is mounted, and an upper surface plate which faces the lower surface plate and polishes the substrate in cooperation with the lower surface plate, the upper surface plate having a larger area than the substrate mounted on the lower surface plate. The substrate transporter is adjacent to the polishing machine and commonly transports the substrate to and from the polishing machine in a first direction, attaches the substrate to the lower surface plate before polishing thereof, and separates from the lower surface plate the substrate after polishing thereof.
    Type: Application
    Filed: July 31, 2017
    Publication date: February 15, 2018
    Inventors: Hyun Jin CHO, Joon-Hwa BAE, Byoung Kwon CHOO, Byung Hoon KANG, Jun Hyuk CHEON, Jeong-Hye CHOI, Young Ho JEONG, Woo Jin CHO