Patents by Inventor Hyeon-Sik Kim

Hyeon-Sik 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: 20200058723
    Abstract: A display device includes a substrate, a semiconductor layer on the substrate, a first insulating layer on the semiconductor layer, a first conductive layer on the semiconductor layer, a second insulating layer on the first conductive layer, a first contact hole penetrating the first insulating layer and the second insulating layer, a second conductive layer on the second insulating layer, connected to the semiconductor layer through the first contact hole, and including a hydrogen barrier material, and a third insulating layer on the second conductive layer.
    Type: Application
    Filed: March 28, 2019
    Publication date: February 20, 2020
    Inventors: Wang Woo LEE, Moo Soon KO, Hyeon Sik KIM, Young Woo PARK, Se Wan SON, Jin Sung AN, Min Woo WOO, Seong Jun LEE, Jeong Soo LEE, Ji Seon LEE, Deuk Myung JI
  • Publication number: 20190386084
    Abstract: A display device may include a light emitting element, a buffer layer, a gate insulation layer, and a switching element. A refractive index of the gate insulation layer may be equal to a refractive index of the buffer layer. The switching element may be electrically connected to the light emitting element and may include an active layer and a gate electrode. The active layer may be positioned between the buffer layer and the gate insulation layer and may directly contact at least one of the buffer layer and the gate insulation layer. The gate insulation layer may be positioned between the active layer and the gate electrode and may directly contact at least one of the active layer and the gate electrode.
    Type: Application
    Filed: August 29, 2019
    Publication date: December 19, 2019
    Inventors: Hye-Hyang PARK, Joo-Hee JEON, Seung-Ho JUNG, Chaun-Gi CHOI, Hyeon-Sik KIM, Hui-Won YANG, Eun-Young LEE
  • Publication number: 20190296153
    Abstract: A thin film transistor array panel includes a substrate, a first gate electrode on the substrate, a semiconductor layer on the first gate electrode, the semiconductor layer including a drain region, a source region, a lightly doped drain (LDD) region, and a channel region, a second gate electrode on the semiconductor layer, the first gate electrode and the second gate electrode each overlapping the channel region, a control gate electrode that overlaps the LDD region, and a source electrode and a drain electrode respectively connected with the source region and the drain region of the semiconductor layer.
    Type: Application
    Filed: March 15, 2019
    Publication date: September 26, 2019
    Inventors: Do Hyung KIM, Gun Hee KIM, Hyeon Sik KIM, Sang Ho PARK, Joo Hee JEON
  • Patent number: 10418431
    Abstract: A display device may include a light emitting element, a buffer layer, a gate insulation layer, and a switching element. A refractive index of the gate insulation layer may be equal to a refractive index of the buffer layer. The switching element may be electrically connected to the light emitting element and may include an active layer and a gate electrode. The active layer may be positioned between the buffer layer and the gate insulation layer and may directly contact at least one of the buffer layer and the gate insulation layer. The gate insulation layer may be positioned between the active layer and the gate electrode and may directly contact at least one of the active layer and the gate electrode.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: September 17, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hye-Hyang Park, Joo-Hee Jeon, Seung-Ho Jung, Chaun-Gi Choi, Hyeon-Sik Kim, Hui-Won Yang, Eun-Young Lee
  • Patent number: 10347699
    Abstract: Disclosed herein is an organic light emitting diode display, including: an insulating substrate including a display area in which a plurality of pixels are formed and a peripheral area positioned around the display area; a touch signal transfer wiring positioned in the peripheral area on the insulating substrate; an insulating layer formed on the insulating substrate, the insulating layer covering the touch signal transfer wiring and including a protrusion and an opening through which the touch signal transfer wiring is partially exposed; a connection conductor connected to the touch signal transfer wiring through the opening; an encapsulation substrate including a touch area corresponding to the display area and a peripheral area positioned around the touch area; a touch electrode layer positioned under the touch area of the encapsulation substrate; and a touch wiring connected to the touch electrode layer and positioned under the peripheral area of the encapsulation substrate.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: July 9, 2019
    Assignee: Smsung Display Co., Ltd.
    Inventors: Oh June Kwon, Seung Yong Song, Hyeon Sik Kim
  • Patent number: 10249843
    Abstract: A display device includes a substrate including a first area displaying an image and a second area adjacent to the first area, the second area transmitting external light, a first electrode and a second electrode disposed in the first area and overlapping each other, an emission layer disposed between the first electrode and the second electrode in the first area, a first semiconductor layer disposed in the first area, and a second semiconductor layer disposed in the second area.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: April 2, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hui-Won Yang, Hyeon Sik Kim, Hye Hyang Park, Eun Young Lee, Joo Hee Jeon
  • Patent number: 10120031
    Abstract: A charge and discharge test probe for a secondary battery includes: an inner plunger moved up and down by elastic force of a spring; a head having a central through hole through which the inner plunger passes to protrude from an upper end of the head; and a first conductive elastic member mounted to the head.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: November 6, 2018
    Assignee: MEGATOUCH CO., LTD.
    Inventors: Woo Yong Choi, Byung Il Lee, Hyeon Sik Kim
  • Patent number: 10068923
    Abstract: A transparent display device includes a base substrate having a pixel area and a transmission area, a barrier layer disposed on the base substrate, a pixel circuit disposed in the pixel area, a display structure disposed on the pixel circuit, a transmitting structure disposed in the transmission area, an adhesive layer disposed between the base substrate and the barrier layer, and between the base substrate and the transmitting structure, and a transmitting window defined in the transmission area where the transmitting structure may include a composition including silicon oxynitride, the adhesive layer may include aluminum oxide, and the transmitting window may expose a surface of the transmitting structure.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: September 4, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung-Ho Jung, Chaun-Gi Choi, Hyeon-Sik Kim, Hye-Young Park, Hye-Hyang Park, Hui-Won Yang, Eun-Young Lee, Joo-Hee Jeon, Su-Kyoung Yang, Chan-Woo Yang
  • Publication number: 20170248659
    Abstract: A charge and discharge test probe for a secondary battery includes: an inner plunger moved up and down by elastic force of a spring; a head having a central through hole through which the inner plunger passes to protrude from an upper end of the head; and a first conductive elastic member mounted to the head.
    Type: Application
    Filed: May 17, 2017
    Publication date: August 31, 2017
    Inventors: Woo Yong CHOI, Byung Il LEE, Hyeon Sik KIM
  • Publication number: 20170221976
    Abstract: A display device may include a light emitting element, a buffer layer, a gate insulation layer, and a switching element. A refractive index of the gate insulation layer may be equal to a refractive index of the buffer layer. The switching element may be electrically connected to the light emitting element and may include an active layer and a gate electrode. The active layer may be positioned between the buffer layer and the gate insulation layer and may directly contact at least one of the buffer layer and the gate insulation layer. The gate insulation layer may be positioned between the active layer and the gate electrode and may directly contact at least one of the active layer and the gate electrode.
    Type: Application
    Filed: January 26, 2017
    Publication date: August 3, 2017
    Inventors: Hye-Hyang PARK, Joo-Hee JEON, Seung-Ho JUNG, Chaun-Gi CHOI, Hyeon-Sik KIM, Hui-Won YANG, Eun-Young LEE
  • Patent number: 9685122
    Abstract: A pixel circuit and a display device having the pixel circuit are disclosed. One inventive aspect includes a switching thin-film TFT and a light sensing TFT. The switching thin-film TFT includes a first source electrode electrically connected to a data line. A first gate electrode of the switching thin-film TFT and a second source electrode of the light sensing TFT are electrically connected to a first gate line. A first drain electrode of the switching thin-film TFT and a second drain electrode of the light sensing TFT are electrically connected to a pixel electrode.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: June 20, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Hun Lim, Hyeon-Sik Kim, Yeon-Gon Mo, Byung-Du Ahn, Hyang-Shik Kong
  • Publication number: 20170092894
    Abstract: A display device includes a substrate including a first area displaying an image and a second area adjacent to the first area, the second area transmitting external light, a first electrode and a second electrode disposed in the first area and overlapping each other, an emission layer disposed between the first electrode and the second electrode in the first area, a first semiconductor layer disposed in the first area, and a second semiconductor layer disposed in the second area.
    Type: Application
    Filed: September 19, 2016
    Publication date: March 30, 2017
    Inventors: Hui-Won YANG, Hyeon Sik Kim, Hye Hyang Park, Eun Young Lee, Joo Hee Jeon
  • Publication number: 20170084635
    Abstract: A transparent display device includes a base substrate having a pixel area and a transmission area, a barrier layer disposed on the base substrate, a pixel circuit disposed in the pixel area, a display structure disposed on the pixel circuit, a transmitting structure disposed in the transmission area, an adhesive layer disposed between the base substrate and the barrier layer, and between the base substrate and the transmitting structure, and a transmitting window defined in the transmission area where the transmitting structure may include a composition including silicon oxynitride, the adhesive layer may include aluminum oxide, and the transmitting window may expose a surface of the transmitting structure.
    Type: Application
    Filed: June 23, 2016
    Publication date: March 23, 2017
    Inventors: Seung-Ho JUNG, Chaun-Gi CHOI, Hyeon-Sik KIM, Hye-Young PARK, Hye-Hyang PARK, Hui-Won YANG, Eun-Young LEE, Joo-Hee JEON, Su-Kyoung YANG, Chan-Woo YANG
  • Patent number: 9570624
    Abstract: A thin film transistor includes a gate electrode, a gate insulating layer, an oxide semiconductor layer, an oxide buffer layer, a protective layer, and source and drain electrodes. The gate electrode is formed on a substrate. The gate insulating layer is formed on the substrate. The oxide semiconductor layer is formed on the gate insulating layer and includes a source, a channel and a drain region. The oxide buffer layer is formed on the oxide semiconductor layer, and has a carrier concentration lower than that of the oxide semiconductor layer. The protective layer is formed on the oxide buffer layer and the gate insulating layer, and has contact holes formed therein so that the oxide buffer layer in the source and drain regions are exposed therethrough. The source and drain electrodes are coupled with the oxide buffer layer in the source and drain regions through the contact holes.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: February 14, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Woong-Hee Jeong, Sun-Kwang Kim, Hyeon-Sik Kim, Byung-Du Ahn, Chaun-Gi Choi
  • Patent number: 9502246
    Abstract: A method of forming an oxide semiconductor device may be provided. In the method, a substrate comprising a first major surface and a second major surface that faces away from the first major surface may be provided. An oxide semiconductor device may be formed over the first major surface to provide an intermediate device, and the semiconductor device may comprise an oxide active layer. The intermediate device may be subjected to ultraviolet (UV) light (e.g., ultraviolet ray irradiation process) for a first period, and subjected to heat (e.g., thermal treatment process) for a second period. The first and second periods may at least partly overlap.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: November 22, 2016
    Assignees: Samsung Display Co., Ltd., University-Industry Foundation (UIF), Yonsei University
    Inventors: Yeon-Hong Kim, Byung-Du Ahn, Hyeon-Sik Kim, Yeon-Gon Mo, Ji-Hun Lim, Hyun-Jae Kim
  • Publication number: 20160218151
    Abstract: Disclosed herein is an organic light emitting diode display, including: an insulating substrate including a display area in which a plurality of pixels are formed and a peripheral area positioned around the display area; a touch signal transfer wiring positioned in the peripheral area on the insulating substrate; an insulating layer formed on the insulating substrate, the insulating layer covering the touch signal transfer wiring and including a protrusion and an opening through which the touch signal transfer wiring is partially exposed; a connection conductor connected to the touch signal transfer wiring through the opening; an encapsulation substrate including a touch area corresponding to the display area and a peripheral area positioned around the touch area; a touch electrode layer positioned under the touch area of the encapsulation substrate; and a touch wiring connected to the touch electrode layer and positioned under the peripheral area of the encapsulation substrate.
    Type: Application
    Filed: October 9, 2015
    Publication date: July 28, 2016
    Inventors: Oh June KWON, Seung Yong SONG, Hyeon Sik KIM
  • Publication number: 20150243793
    Abstract: A thin film transistor includes a gate electrode, a gate insulating layer, an oxide semiconductor layer, an oxide buffer layer, a protective layer, and source and drain electrodes. The gate electrode is formed on a substrate. The gate insulating layer is formed on the substrate. The oxide semiconductor layer is formed on the gate insulating layer and includes a source, a channel and a drain region. The oxide buffer layer is formed on the oxide semiconductor layer, and has a carrier concentration lower than that of the oxide semiconductor layer. The protective layer is formed on the oxide buffer layer and the gate insulating layer, and has contact holes formed therein so that the oxide buffer layer in the source and drain regions are exposed therethrough. The source and drain electrodes are coupled with the oxide buffer layer in the source and drain regions through the contact holes.
    Type: Application
    Filed: February 12, 2015
    Publication date: August 27, 2015
    Inventors: Woong-Hee Jeong, Sun-Kwang Kim, Hyeon-Sik Kim, Byung-Du Ahn, Chaun-Gi Choi
  • Publication number: 20150145840
    Abstract: A pixel circuit and a display device having the pixel circuit are disclosed. One inventive aspect includes a switching thin-film TFT and a light sensing TFT. The switching thin-film TFT includes a first source electrode electrically connected to a data line. A first gate electrode of the switching thin-film TFT and a second source electrode of the light sensing TFT are electrically connected to a first gate line. A first drain electrode of the switching thin-film TFT and a second drain electrode of the light sensing TFT are electrically connected to a pixel electrode.
    Type: Application
    Filed: November 19, 2014
    Publication date: May 28, 2015
    Inventors: Ji-Hun LIM, Hyeon-Sik KIM, Yeon-Gon MO, Byung-Du AHN, Hyang-Shik KONG
  • Publication number: 20150144952
    Abstract: A display substrate, method of manufacturing the same, and a display device including the same are disclosed. In one aspect, a display substrate includes a first gate electrode formed on a base substrate, a scan line electrically connected to the first gate electrode, a gate insulation layer, an etch stop layer and a passivation layer formed on the base substrate to at least partially overlap the first gate electrode and the scan line, and a data line formed on the passivation layer to at least partially overlap the scan line.
    Type: Application
    Filed: October 22, 2014
    Publication date: May 28, 2015
    Inventors: Sun-Kwang Kim, Chaun-Gi Choi, Dong-Han Kang, Jae-Sik Kim, Hyeon-Sik Kim, Woong-Hee Jeong
  • Publication number: 20150140699
    Abstract: A method of forming an oxide semiconductor device may be provided. In the method, a substrate comprising a first major surface and a second major surface that faces away from the first major surface may be provided. An oxide semiconductor device may be formed over the first major surface to provide an intermediate device, and the semiconductor device may comprise an oxide active layer. The intermediate device may be subjected to ultraviolet (UV) light (e.g., ultraviolet ray irradiation process) for a first period, and subjected to heat (e.g., thermal treatment process) for a second period. The first and second periods may at least partly overlap.
    Type: Application
    Filed: August 8, 2014
    Publication date: May 21, 2015
    Inventors: Yeon-Hong Kim, Byung-Du AHN, Hyeon-Sik KIM, Yeon-Gon MO, Ji-Hun LIM, Hyun-Jae KIM