Patents by Inventor Yoon-ho Khang

Yoon-ho Khang 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).

  • Patent number: 9356153
    Abstract: A thin film transistor includes a bottom gate electrode, a top gate electrode and an active pattern. The top gate electrode includes a transparent conductive material and overlaps with the bottom gate electrode. A boundary of the bottom gate electrode and a boundary of the top gate electrode are coincident with each other in a cross-sectional view. The active pattern includes a source portion, a drain portion and a channel portion disposed between the source portion and the drain portion. The channel portion overlaps with the bottom gate electrode and the top gate electrode.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: May 31, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yoon-Ho Khang, Dong-Jo Kim, Su-Hyoung Kang, Yong-Su Lee
  • Publication number: 20160148958
    Abstract: A thin film transistor array panel includes: a gate wiring layer disposed on a substrate; an oxide semiconductor layer disposed on the gate wiring layer; and a data wiring layer disposed on the oxide semiconductor layer, in which the data wiring layer includes a main wiring layer including copper and a capping layer disposed on the main wiring layer and including a copper alloy.
    Type: Application
    Filed: January 29, 2016
    Publication date: May 26, 2016
    Inventors: Do-Hyun KIM, Yoon Ho KHANG, Dong-Hoon LEE, Sang Ho PARK, Se Hwan YU, Cheol Kyu KIM, Yong-Su LEE, Sung Haeng CHO, Chong Sup CHANG, Dong Jo KIM, Jung Kyu LEE
  • Publication number: 20160148983
    Abstract: An OLED display and a method of manufacturing the same are disclosed. In one aspect, the OLED display includes a substrate and a semiconductor layer formed over the substrate, wherein the semiconductor layer includes a channel and a contact region formed on opposing sides of the channel. The display also includes an insulating layer formed over the semiconductor layer and having a contact hole exposing the contact region, and an OLED formed over the insulating layer, wherein the OLED is electrically connected to the contact region through the contact hole, and wherein at least a portion of the contact hole is formed directly above the contact region.
    Type: Application
    Filed: May 8, 2015
    Publication date: May 26, 2016
    Inventors: Myoung Geun Cha, Dong Jo Kim, Yoon Ho Khang, Jong Chan Lee
  • Publication number: 20160141558
    Abstract: An OLED display and a method of manufacturing thereof are disclosed. In one aspect, the display includes a scan line formed over a substrate and configured to transfer a scan signal, a data line and a driving voltage line crossing the scan line and respectively configured to transfer a data voltage and a driving voltage, and a switching transistor electrically connected to the scan line and the data line and including a switching drain electrode configured to output the data voltage. The display also includes a driving transistor including a driving gate electrode, a driving drain electrode, and a driving source electrode electrically connected to the switching drain electrode. The display further includes a storage capacitor including a first storage electrode electrically connected to the driving gate electrode and a second storage electrode formed on the same layer as the driving voltage line.
    Type: Application
    Filed: May 8, 2015
    Publication date: May 19, 2016
    Inventors: Myoung Geun Cha, Jin Goo Jung, Yoon Ho Khang, Se Mi Kim
  • Publication number: 20160141310
    Abstract: A thin film transistor substrate includes a base substrate, an active pattern disposed on the base substrate, a gate insulation pattern disposed on the active pattern, a gate electrode disposed on the gate insulation pattern and overlapping the channel, and a light-blocking pattern disposed between the base substrate and the active pattern and having a size greater than the active pattern. The active pattern includes a source electrode, a drain electrode, and a channel disposed between the source electrode and the drain electrode.
    Type: Application
    Filed: January 26, 2016
    Publication date: May 19, 2016
    Inventors: Sang-Ho PARK, Su-Hyoung KANG, Dong-Hwan SHIM, Yoon-Ho KHANG, Se-Hwan YU, Min-Jung LEE, Yong-Su LEE
  • Patent number: 9343583
    Abstract: A thin film transistor, a thin film transistor array panel including the same, and a method of manufacturing the same are provided, wherein the thin film transistor includes a channel region including an oxide semiconductor, a source region and a drain region connected to the channel region and facing each other at both sides with respect to the channel region, an insulating layer positioned on the channel region, and a gate electrode positioned on the insulating layer, wherein an edge boundary of the gate electrode and an edge boundary of the channel region are substantially aligned.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: May 17, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yong Su Lee, Yoon Ho Khang, Dong Jo Kim, Hyun Jae Na, Sang Ho Park, Se Hwan Yu, Chong Sup Chang
  • Patent number: 9312279
    Abstract: A thin film transistor (TFT) array substrate includes a substrate, a gate electrode, a gate line, a first data line, and a second data line on the substrate, a gate insulating layer that covers the gate electrode and the gate line and includes a first opening that exposes a portion of the first data line and a second opening that exposes a portion of the second data line, an active layer disposed on the gate insulating layer so that at least one portion of the active layer overlaps the gate electrode, a drain electrode and a source electrode that extend from opposite sides of the active layer, a pixel electrode that extends from the drain electrode, and a connection wiring that extends from the source electrode, and connects the first data line to the second data line through the first and second openings of the gate insulating layer.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: April 12, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Myoung-Geun Cha, Yoon-Ho Khang, Hyun-Jae Na, Sang-Ho Park
  • Patent number: 9281343
    Abstract: A thin film transistor display panel includes: a gate electrode, a source electrode and a drain electrode which are included in a thin film transistor on a substrate; a data line connected to the source electrode; a pixel link member connecting the drain electrode to a pixel electrode; and a gate pad connected to the gate electrode through a gate line and including a first gate subpad, a second gate subpad and a gate pad link member, in which the pixel link member and the gate pad link member are substantially same in thickness.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: March 8, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yong-Su Lee, Yoon-Ho Khang, Se-Hwan Yu, Dong-Jo Kim, Min-Jung Lee
  • Publication number: 20160064571
    Abstract: A thin film transistor including a gate electrode, a semiconductor layer, a gate insulating layer, a source electrode, a drain electrode and a graphene pattern. The semiconductor layer overlaps with the gate electrode. The gate insulating layer is disposed between the gate electrode and the semiconductor layer. The source electrode overlaps with the semiconductor layer. The drain electrode overlaps with the semiconductor layer. The drain electrode is spaced apart from the source electrode. The graphene pattern is disposed between the semiconductor layer and at least one of the source electrode and the drain electrode.
    Type: Application
    Filed: November 12, 2015
    Publication date: March 3, 2016
    Inventors: Yong-Su LEE, Yoon-Ho KHANG, Se-Hwan YU, Su-Hyoung KANG
  • Patent number: 9276086
    Abstract: A thin film transistor substrate includes a base substrate, an active pattern disposed on the base substrate, a gate insulation pattern disposed on the active pattern, a gate electrode disposed on the gate insulation pattern and overlapping the channel, and a light-blocking pattern disposed between the base substrate and the active pattern and having a size greater than the active pattern. The active pattern includes a source electrode, a drain electrode, and a channel disposed between the source electrode and the drain electrode.
    Type: Grant
    Filed: February 17, 2015
    Date of Patent: March 1, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sang-Ho Park, Su-Hyoung Kang, Dong-Hwan Shim, Yoon-Ho Khang, Se-Hwan Yu, Min-Jung Lee, Yong-Su Lee
  • Patent number: 9263467
    Abstract: A thin film transistor array panel according to an exemplary embodiment of the present disclosure includes: an insulating substrate; a gate electrode disposed on the insulating substrate; a gate insulating layer disposed on the gate electrode; a semiconductor disposed on the gate insulating layer; a source electrode and a drain electrode disposed on the semiconductor; an ohmic contact layer disposed at an interface between at least one of the source and drain electrodes and the semiconductor. Surface heights of the source and drain electrodes different, while surface heights of the semiconductor and the ohmic contact layer are the same. The ohmic contact layer is made of a silicide of a metal used for the source and drain electrodes.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: February 16, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD
    Inventors: Sang Ho Park, Yoon Ho Khang, Se Hwan Yu, Yong Su Lee, Chong Sup Chang, Myoung Geun Cha, Hyun Jae Na
  • Patent number: 9252284
    Abstract: A display substrate and a method for manufacturing a display substrate are disclosed. In the method, a gate electrode is formed on a base substrate. An active pattern is formed using an oxide semiconductor. The active pattern partially overlaps the gate electrode. A first insulation layer pattern and a second insulation layer pattern are sequentially formed on the active pattern. The first insulation layer pattern and the second insulation layer pattern overlap the gate electrode. A third insulation layer is formed to cover the active pattern, the first insulation layer pattern and the second insulation layer pattern. Either the first insulation layer pattern or the second insulation layer pattern includes aluminum oxide. Forming the first insulation layer pattern and the second insulation layer pattern includes performing a backside exposure process using the gate electrode as an exposure mask.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: February 2, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong-Chan Lee, Yoon-Ho Khang, Su-Hyoung Kang, Dong-Jo Kim, Ji-Seon Lee, Myoung-Geun Cha, Deuk-Myung Ji
  • Patent number: 9252226
    Abstract: Provided is a thin film transistor array panel. The thin film transistor array panel according to exemplary embodiments of the present invention includes: a gate wiring layer disposed on a substrate; an oxide semiconductor layer disposed on the gate wiring layer; and a data wiring layer disposed on the oxide semiconductor layer, in which the data wiring layer includes a main wiring layer including copper and a capping layer disposed on the main wiring layer and including a copper alloy.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: February 2, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Do-Hyun Kim, Yoon Ho Khang, Dong-Hoon Lee, Sang Ho Park, Se Hwan Yu, Cheol Kyu Kim, Yong-Su Lee, Sung Haeng Cho, Chong Sup Chang, Dong Jo Kim, Jung Kyu Lee
  • Patent number: 9219085
    Abstract: A thin film transistor array panel and a manufacturing method capable of forming an insulating layer made of different materials for a portion contacting an oxide semiconductor and a second portion without an additional process. Source and drain electrodes of the thin film transistor each include a lower layer and an upper layer. A first passivation layer contacts the lower layer of the source and drain electrodes but does not contact the upper layer of the source and drain electrodes, and a second passivation layer is disposed on the upper layer of the source and drain electrodes. The first passivation layer may be made of silicon oxide, and the second passivation may be made of silicon nitride.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: December 22, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Su-Hyoung Kang, Yoon Ho Khang, Dong Jo Kim, Hyun Jae Na
  • Publication number: 20150357478
    Abstract: A thin film transistor display panel according to an exemplary embodiment of the present invention includes a substrate, a first insulating layer formed on the substrate, a semiconductor layer formed on the first insulating layer, a second insulating layer formed on the semiconductor layer, and a gate electrode formed on the second insulating layer, in which the first insulating layer includes a light blocking material, and a thickness of the first insulating layer is greater than or equal to a thickness of the second insulating layer.
    Type: Application
    Filed: August 19, 2015
    Publication date: December 10, 2015
    Inventors: HYUN JAE NA, Yoon Ho Khang, Sang Ho Park, Dong Hwan Shim, Se Hwan Yu, Yong Su Lee, Myoung Geun Cha
  • Patent number: 9153626
    Abstract: A thin film transistor includes a gate electrode configured to receive a control voltage, a source electrode insulated from the gate electrode, and configured to receive an input voltage, a drain electrode insulated from the gate electrode, and configured to receive an output voltage, at least two carbon nanotube patterns formed in a channel region between the source electrode and the drain electrode, wherein the carbon nanotube patterns are separated from each other, and at least one floating electrode connecting the two carbon nanotube patterns to each other.
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: October 6, 2015
    Assignees: SAMSUNG DISPLAY CO., LTD., SNU R&DB FOUNDATION
    Inventors: Sang Ho Park, Young Ki Shin, Yoon Ho Khang, Joo Hyung Lee, Hyung Woo Lee, Seung Hun Hong
  • Patent number: 9147741
    Abstract: A thin film transistor display panel according to an exemplary embodiment of the present invention includes a substrate, a first insulating layer formed on the substrate, a semiconductor layer formed on the first insulating layer, a second insulating layer formed on the semiconductor layer, and a gate electrode formed on the second insulating layer, in which the first insulating layer includes a light blocking material, and a thickness of the first insulating layer is greater than or equal to a thickness of the second insulating layer.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: September 29, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun Jae Na, Yoon Ho Khang, Sang Ho Park, Dong Hwan Shim, Se Hwan Yu, Yong Su Lee, Myoung Geun Cha
  • Publication number: 20150214380
    Abstract: A thin film transistor, a thin film transistor array panel including the same, and a method of manufacturing the same are provided, wherein the thin film transistor includes a channel region including an oxide semiconductor, a source region and a drain region connected to the channel region and facing each other at both sides with respect to the channel region, an insulating layer positioned on the channel region, and a gate electrode positioned on the insulating layer, wherein an edge boundary of the gate electrode and an edge boundary of the channel region are substantially aligned.
    Type: Application
    Filed: April 3, 2015
    Publication date: July 30, 2015
    Inventors: YONG SU LEE, YOON HO KHANG, DONG JO KIM, HYUN JAE NA, SANG HO PARK, SE HWAN YU, CHONG SUP CHANG
  • Publication number: 20150206932
    Abstract: A thin film transistor (TFT), method of manufacturing the TFT and a flat panel display having the TFT are disclosed. In one aspect, the TFT comprises a substrate and an active layer formed over the substrate, wherein the active layer is formed of oxide semiconductor, and wherein the active layer includes two opposing sides. The TFT also comprises source and drain regions formed at the opposing sides of the active layer, a first insulating layer formed over the active layer, a gate electrode formed over the active layer, a second insulating layer formed covering the first insulation layer and the gate electrode, and a first conductive layer formed on the source and drain regions and contacting the second insulating layer.
    Type: Application
    Filed: December 2, 2014
    Publication date: July 23, 2015
    Inventors: Myoung-Geun Cha, Sang-Ho Park, Hyun-Jae Na, Yoon-Ho Khang, Dae-Ho Kim
  • Publication number: 20150194534
    Abstract: A thin film transistor according to an exemplary embodiment of the present invention includes an oxide semiconductor. A source electrode and a drain electrode face each other. The source electrode and the drain electrode are positioned at two opposite sides, respectively, of the oxide semiconductor. A low conductive region is positioned between the source electrode or the drain electrode and the oxide semiconductor. An insulating layer is positioned on the oxide semiconductor and the low conductive region. A gate electrode is positioned on the insulating layer. The insulating layer covers the oxide semiconductor and the low conductive region. A carrier concentration of the low conductive region is lower than a carrier concentration of the source electrode or the drain electrode.
    Type: Application
    Filed: March 24, 2015
    Publication date: July 9, 2015
    Inventors: Yong Su LEE, Yoon Ho KHANG, Dong Jo KIM, Hyun Jae NA, Sang Ho PARK, Se Hwan YU, Chong Sup CHANG, Dae Ho KIM, Jae Neung KIM, Myoung Geun CHA, Sang Gab KIM, Yu-Gwang JEONG