Patents by Inventor Chang Ok KIM

Chang Ok KIM 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: 20210104588
    Abstract: A display device includes a base substrate including a display area and a non-display area around the display area are defined, a first interlayer insulating layer disposed on the base substrate, a second interlayer insulating layer disposed on the first interlayer insulating layer, a first semiconductor layer disposed on the second interlayer insulating layer and including an oxide, and a first gate insulating layer disposed on the first semiconductor layer, wherein the material of the first interlayer insulating layer and the material of the second interlayer insulating layer are different from each other. Methods of manufacturing a display device are also disclosed.
    Type: Application
    Filed: May 20, 2020
    Publication date: April 8, 2021
    Applicant: Samsung Display Co., LTD.
    Inventors: Ji Hye HAN, Chul Min BAE, Chang Ok KIM
  • Patent number: 10950669
    Abstract: A display device includes a light-emitting element, a thin film encapsulation layer disposed on the light-emitting element, a protection layer disposed on the thin film encapsulation layer, a first sensing electrode disposed on the protection layer, an insulating layer disposed on the first sensing electrode, and a second sensing electrode disposed on the insulating layer, in which at least one of the thin film encapsulation layer and the insulating layer has a multi-layer structure including first and second alternating layers forming at least three layers, and the first layer includes a first material having a first refractive index and the second layer includes a second material having a second refractive index different from the first refractive index.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: March 16, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang Wook Lee, Chang Ok Kim, Heon Sik Ha
  • Patent number: 10802200
    Abstract: A backlight unit may include a light source, a light guide plate neighboring the light source, a low refractive index layer disposed on the light guide plate, a blocking layer disposed on the low refractive index layer, and a wavelength conversion layer disposed on the blocking layer and including quantum dots. A refractive index of the low refractive index layer may be less than a refractive index of the light guide plate.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: October 13, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chang Ok Kim, Chul Min Bae, Ji Hye Han, Junghwan Yi, Shin Il Choi
  • Patent number: 10739895
    Abstract: A display device includes a display part that displays an image, a touch part on the display part, the touch part including a first conductive layer on the display part, a lower inorganic layer on the first conductive layer, an upper inorganic layer covering the lower inorganic layer and a second conductive layer on the upper inorganic layer. The upper inorganic layer includes substantially a same material as the lower inorganic layer. The upper inorganic layer has a hydrogen atomic percent less than a hydrogen atomic percent of the lower inorganic layer.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: August 11, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sangwook Lee, Chang Ok Kim, SungHoon Yang, Junmo Im
  • Publication number: 20200233136
    Abstract: A light unit including: a light source; and an optical member that transmits and converts light emitted from the light source, wherein the optical member includes: a light guide; a low refractive index layer that is disposed on the light guide and has a lower refractive index than that of the light guide; a first capping layer that is disposed on the low refractive index layer; and a wavelength conversion layer that is disposed on the first capping layer and includes quantum dots, and the light guide includes a transparent metal oxide.
    Type: Application
    Filed: December 15, 2019
    Publication date: July 23, 2020
    Inventors: Chang Ok KIM, Chul Min BAE, Ji Hye HAN, Tae Wook KANG, Yong Seok KIM, Shin Il CHOI
  • Publication number: 20200073039
    Abstract: A backlight unit may include a light source, a light guide plate neighboring the light source, a low refractive index layer disposed on the light guide plate, a blocking layer disposed on the low refractive index layer, and a wavelength conversion layer disposed on the blocking layer and including quantum dots. A refractive index of the low refractive index layer may be less than a refractive index of the light guide plate.
    Type: Application
    Filed: August 8, 2019
    Publication date: March 5, 2020
    Inventors: Chang Ok KIM, Chul Min BAE, Ji Hye HAN, Junghwan YI, Shin Il CHOI
  • Publication number: 20190391693
    Abstract: A display device includes a display part that displays an image, a touch part on the display part, the touch part including a first conductive layer on the display part, a lower inorganic layer on the first conductive layer, an upper inorganic layer covering the lower inorganic layer and a second conductive layer on the upper inorganic layer. The upper inorganic layer includes substantially a same material as the lower inorganic layer. The upper inorganic layer has a hydrogen atomic percent less than a hydrogen atomic percent of the lower inorganic layer.
    Type: Application
    Filed: August 28, 2019
    Publication date: December 26, 2019
    Inventors: Sangwook Lee, Chang Ok Kim, SungHoon Yang, Junmo Im
  • Patent number: 10444884
    Abstract: A display device includes a display part that displays an image, a touch part on the display part, the touch part including a first conductive layer on the display part, a lower inorganic layer on the first conductive layer, an upper inorganic layer covering the lower inorganic layer and a second conductive layer on the upper inorganic layer. The upper inorganic layer includes substantially a same material as the lower inorganic layer. The upper inorganic layer has a hydrogen atomic percent less than a hydrogen atomic percent of the lower inorganic layer.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: October 15, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sangwook Lee, Chang Ok Kim, SungHoon Yang, Junmo Im
  • Publication number: 20190115395
    Abstract: A display device includes a light-emitting element, a thin film encapsulation layer disposed on the light-emitting element, a protection layer disposed on the thin film encapsulation layer, a first sensing electrode disposed on the protection layer, an insulating layer disposed on the first sensing electrode, and a second sensing electrode disposed on the insulating layer, in which at least one of the thin film encapsulation layer and the insulating layer has a multi-layer structure including first and second alternating layers forming at least three layers, and the first layer includes a first material having a first refractive index and the second layer includes a second material having a second refractive index different from the first refractive index.
    Type: Application
    Filed: October 16, 2018
    Publication date: April 18, 2019
    Inventors: Sang Wook LEE, Chang Ok KIM, Heon Sik Ha
  • Publication number: 20180164934
    Abstract: A display device includes a display part that displays an image, a touch part on the display part, the touch part including a first conductive layer on the display part, a lower inorganic layer on the first conductive layer, an upper inorganic layer covering the lower inorganic layer and a second conductive layer on the upper inorganic layer. The upper inorganic layer includes substantially a same material as the lower inorganic layer. The upper inorganic layer has a hydrogen atomic percent less than a hydrogen atomic percent of the lower inorganic layer.
    Type: Application
    Filed: February 6, 2018
    Publication date: June 14, 2018
    Inventors: Sangwook LEE, Chang Ok KIM, SungHoon YANG, Junmo IM
  • Patent number: 9927896
    Abstract: A display device includes a display part that displays an image, a touch part on the display part, the touch part including a first conductive layer on the display part, a lower inorganic layer on the first conductive layer, an upper inorganic layer covering the lower inorganic layer and a second conductive layer on the upper inorganic layer. The upper inorganic layer includes substantially a same material as the lower inorganic layer. The upper inorganic layer has a hydrogen atomic percent less than a hydrogen atomic percent of the lower inorganic layer.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: March 27, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sangwook Lee, Chang Ok Kim, SungHoon Yang, Junmo Im
  • Patent number: 9620613
    Abstract: An organic light emitting display device includes a substrate, a first transistor disposed on the substrate in the opaque region, a second transistor disposed on the substrate in the opaque region, the second transistor being adjacent to the first transistor along a first direction, and a capacitor disposed on the substrate in the opaque region, the capacitor being adjacent to the first transistor along a second direction different from the first direction. Here, the capacitor may include a first capacitor electrode, a dielectric structure including silicon oxynitride and a second capacitor electrode.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: April 11, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Ho Park, Jae-Hyuk Jang, Chang-Ok Kim, Joo-Sun Yoon, Yong-Jae Jang
  • Patent number: 9417371
    Abstract: A manufacturing method of a reflective polarizer includes forming a metal layer on a first substrate; forming a mask layer divided into an opening area and a non-opening area on the metal layer, and having grooves patterned in the opening area, the groove exposing the metal layer; increasing hydrophobicity of a surface by treating the mask layer using a silane coupling agent; inducing phase separation of a hydrophilic component and a hydrophobic component of a block copolymer after filling the grooves of the mask layer with the block copolymer; selectively removing the hydrophilic component or the hydrophobic component block copolymer of the block copolymer; and etching the metal layer using the block copolymer as a mask.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: August 16, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chang Ok Kim, Sung Hoon Yang
  • Publication number: 20160223872
    Abstract: A liquid crystal display device includes a substrate; a gate line and a data line positioned on the substrate; a thin film transistor connected to the gate line and the data line; a passivation layer positioned on the gate line, the data line, and the thin film transistor; a first electrode positioned on the passivation layer; an interlayer insulating layer positioned on the first electrode; and a second electrode positioned on the interlayer insulating layer, wherein the first electrode includes a first layer made of an indium-zinc oxide in which a weight ratio of an indium oxide is 20 wt % or less or made of a transparent metal oxide that does not contain an indium oxide.
    Type: Application
    Filed: July 24, 2015
    Publication date: August 4, 2016
    Inventors: Woo-Seok JEON, Sung Hoon YANG, Chang Ok KIM, Jung Yun JO
  • Patent number: 9385142
    Abstract: A liquid crystal display includes: an insulation substrate, a gate line disposed on the insulation substrate, a first field generating electrode disposed on the insulation substrate, a gate insulating layer disposed on the gate line and the first field generating electrode, a semiconductor disposed on the gate insulating layer and a data line disposed on the gate insulating layer. A value [N—H]/[Si—H] of the gate insulating layer is in a range of about 13 to about 25. Here, the value [N—H]/[Si—H] means a ratio of a bonding number [N—H] of nitrogen and hydrogen to a bonding number [Si—H] of silicon and hydrogen according to an analysis of an FT-IR spectrometer.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: July 5, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jung Yun Jo, Chang Ok Kim
  • Publication number: 20160124265
    Abstract: A polarizer includes a base substrate and a wire grid array disposed on the base substrate. The wire grid array includes a plurality of linear patterns that extend in a first direction and are spaced apart from each other in a second direction crossing the first direction. The linear patterns include a metal layer and a metal oxide layer including an oxide of a metal included in the metal layer.
    Type: Application
    Filed: October 5, 2015
    Publication date: May 5, 2016
    Inventors: Sang-Wook Lee, Chang-Ok Kim, Jun-Mo Im
  • Publication number: 20160103549
    Abstract: A display device includes a display part that displays an image, a touch part on the display part, the touch part including a first conductive layer on the display part, a lower inorganic layer on the first conductive layer, an upper inorganic layer covering the lower inorganic layer and a second conductive layer on the upper inorganic layer. The upper inorganic layer includes substantially a same material as the lower inorganic layer. The upper inorganic layer has a hydrogen atomic percent less than a hydrogen atomic percent of the lower inorganic layer.
    Type: Application
    Filed: September 16, 2015
    Publication date: April 14, 2016
    Inventors: Sangwook LEE, Chang Ok KIM, SungHoon YANG, Junmo IM
  • Publication number: 20160070044
    Abstract: A manufacturing method of a reflective polarizer includes forming a metal layer on a first substrate; forming a mask layer divided into an opening area and a non-opening area on the metal layer, and having grooves patterned in the opening area, the groove exposing the metal layer; increasing hydrophobicity of a surface by treating the mask layer using a silane coupling agent; inducing phase separation of a hydrophilic component and a hydrophobic component of a block copolymer after filling the grooves of the mask layer with the block copolymer; selectively removing the hydrophilic component or the hydrophobic component block copolymer of the block copolymer; and etching the metal layer using the block copolymer as a mask.
    Type: Application
    Filed: July 8, 2015
    Publication date: March 10, 2016
    Inventors: Chang Ok KIM, Sung Hoon YANG
  • Publication number: 20160020266
    Abstract: An organic light emitting display device includes a substrate, a first transistor disposed on the substrate in the opaque region, a second transistor disposed on the substrate in the opaque region, the second transistor being adjacent to the first transistor along a first direction, and a capacitor disposed on the substrate in the opaque region, the capacitor being adjacent to the first transistor along a second direction different from the first direction. Here, the capacitor may include a first capacitor electrode, a dielectric structure including silicon oxynitride and a second capacitor electrode.
    Type: Application
    Filed: May 26, 2015
    Publication date: January 21, 2016
    Inventors: Sang-Ho PARK, Jae-Hyuk JANG, Chang-Ok KIM, Joo-Sun YOON, Yong-Jae JANG
  • Publication number: 20150144951
    Abstract: A thin film transistor array panel including: an insulation substrate, a gate line provided on the insulation substrate and including a gate electrode, a gate insulating layer provided on the gate line, a semiconductor layer provided on the gate insulating layer, and a source electrode and a drain electrode provided on the semiconductor layer and separated from each other, and the gate insulating layer includes a fluorinated silicon oxide (SiOF) layer, and the gate electrode, the semiconductor layer, the source electrode, and the drain electrode form a thin film transistor, and a threshold voltage shift value of the thin film transistor is substantially less than 4.9 V.
    Type: Application
    Filed: April 21, 2014
    Publication date: May 28, 2015
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Doo-Na Kim, Hyeon Jun Lee, Chang Ok Kim, Yoon Ho Kim, Ki Seong Seo, Jung Yun Jo