Patents by Inventor Joon-Hoo Choi

Joon-Hoo Choi 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: 9312316
    Abstract: An organic light emitting diode (OLED) display includes: a first substrate including a display area and a non-display area; a driving element on the display area of the first substrate, and including a driving thin film transistor, a switching thin film transistor, and a capacitor; a circuit unit on the non-display area of the first substrate; an organic light emitting element on the driving element, and including a pixel electrode, an organic emission layer, and a common electrode; an inorganic protective layer covering the circuit unit and the common electrode of the organic light emitting diode; a sealing member on the inorganic protective layer in the non-display area of the first substrate; and a second substrate on the sealing member.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: April 12, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chun-Gi You, Joon-Hoo Choi
  • Publication number: 20160079338
    Abstract: An organic light emitting diode display includes: a substrate including a first and a second gate electrode formed over a first and a second region, respectively, a first and a second gate insulator formed on the first and the second gate electrode, respectively, a first and a second semiconductor layer formed on the first and the second gate insulator, respectively, the first semiconductor layer including a first channel region, the second semiconductor layer including a second channel region, an interlayer insulator formed over the substrate and over at least part of the first and second semiconductor layers, a first and a second etching stop layer formed over the first and second channel regions, respectively, and surrounded by the interlayer insulator, and a first and a second source electrode and a first and a second drain electrode contacting the first and the second semiconductor layer, respectively, through the interlayer insulator.
    Type: Application
    Filed: November 19, 2015
    Publication date: March 17, 2016
    Inventors: Kyu-Sik Cho, Won-Kyu Lee, Tae-Hoon Yang, Byoung-Kwon Choo, Sang-Ho Moon, Bo-Kyung Choi, Yong-Hwan Park, Joon-Hoo Choi, Min-Chul Shin, Yun-Gyu Lee
  • Patent number: 9172060
    Abstract: An organic light-emitting display and a method of manufacturing the organic light-emitting display are disclosed. In one embodiment, the organic light-emitting display includes: i) a pixel electrode disposed on a substrate, ii) an opposite electrode disposed opposite to the pixel electrode, iii) an organic emission layer disposed between the pixel electrode and the opposite electrode; a light-scattering portion disposed between the substrate and the organic emission layer, including a plurality of scattering patterns for scattering light emitted from the organic emission layer in insulating layers having different refractive indexes. The display may further include a plurality of light absorption portions disposed between the light-scattering portion and the organic emission layer to correspond to the scattering patterns.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: October 27, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Ho Moon, Joon-Hoo Choi, Kyu-Sik Cho
  • Patent number: 9159949
    Abstract: An organic electroluminescent display device includes a first electrode on a substrate, an organic layer including a light-emitting layer on the first electrode, a second electrode including lower and upper conductive layers sequentially stacked on the organic layer, and an insulating pattern extending into the organic layer through the lower conductive layer.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: October 13, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chun Gi You, Joon Hoo Choi
  • Patent number: 9118035
    Abstract: An organic light-emitting display apparatus includes: a substrate including an emission region and a non-emission region and having a recess formed in at least a portion of the non-emission region; a black matrix disposed in the recess; a thin film transistor disposed on the non-emission region of the substrate and including an active layer, a gate electrode, and source and drain electrodes; a pixel electrode disposed on the emission region of the substrate and electrically connected to one of the source and drain electrodes; an organic emission layer disposed on the pixel electrode; and an opposite electrode disposed on the organic emission layer.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: August 25, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong-Woo Park, Chun-Gi You, Joon-Hoo Choi, Won-Pil Lee
  • Patent number: 9070904
    Abstract: An OLED display includes a first polysilicon layer pattern on a substrate having a first gate electrode, a second gate electrode, and a first capacitor electrode, a gate insulating layer pattern, a second polysilicon layer pattern including a first active layer, a second active layer, and a capacitor polycrystalline dummy layer, a third amorphous silicon layer pattern including first source and drain resistant contact layers on a predetermined region of the first active layer, second source and drain resistant contact layers on a predetermined region of the second active layer, and a capacitor amorphous dummy layer on the capacitor polycrystalline dummy layer, and a data metal layer pattern including first source/drain electrodes, second source/drain electrodes, and a second capacitor electrode.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: June 30, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kyu-Sik Cho, Joon-Hoo Choi, Byoung-Kwon Choo, Min-Chul Shin, Tae-Hoon Yang, Won-Kyu Lee, Yun-Gyu Lee, Bo-Kyung Choi, Yong-Hwan Park, Sang-Ho Moon
  • Patent number: 9040993
    Abstract: An organic light-emitting display apparatus and a method of manufacturing the same. The organic light-emitting display apparatus includes an organic light-emitting device in which a pixel electrode, an intermediate layer that includes an emissive layer, and a cathode electrode are sequentially stacked. The cathode contact unit includes a cathode bus line that is formed on the same layer as the pixel electrode and contacts the cathode electrode, a first auxiliary electrode that is formed on the cathode bus line along an edge area of the cathode bus line, and a second auxiliary electrode that contacts the first auxiliary electrode.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: May 26, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chun-Gi You, Joon-Hoo Choi
  • Patent number: 9012890
    Abstract: An organic light-emitting display device and a method of manufacturing the organic light-emitting display device. A metal layer separated from a pixel electrode is formed without increasing the number of masks, thereby simplifying the pixel electrode and obtaining etching characteristics of a gate electrode.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: April 21, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chun-Gi You, Joon-Hoo Choi
  • Patent number: 8980663
    Abstract: An organic light emitting diode (OLED) display device and a method of fabricating the same are disclosed.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: March 17, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Won-Kyu Lee, Kyu-Sik Cho, Tae-Hoon Yang, Byoung-Kwon Choo, Sang-Ho Moon, Bo-Kyung Choi, Yong-Hwan Park, Joon-Hoo Choi, Min-Chul Shin, Yun-Gyu Lee
  • Patent number: 8963153
    Abstract: A thin film transistor (TFT) and an organic light emitting display device having the same are disclosed. In one embodiment, a TFT includes a gate electrode formed on a substrate. A gate insulating layer is formed on the substrate having the gate electrode. An active layer is formed on the gate insulating layer. A source electrode is formed over the active layer. A drain electrode is formed to substantially surround at least three surfaces of the source electrode on the active layer.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: February 24, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byoung-Kwon Choo, Kyu-Sik Cho, Won-Kyu Lee, Yong-Hwan Park, Sang-Ho Moon, Tae-Hoon Yang, Joon-Hoo Choi, Min-Chul Shin, Bo-Kyung Choi, Yun-Gyu Lee
  • Patent number: 8952386
    Abstract: An OLED apparatus including a thin film transistor including an activation layer, a gate electrode insulated from the activation layer and including a lower gate electrode and an upper gate electrode, an interlayer insulation film covering the gate electrode, and a source and drain electrode on the insulation film and contacting the activation layer; an OLED including a pixel electrode electrically connected to the thin film transistor, an intermediate layer including an emissive layer, and an opposite electrode; a blister prevention layer on a same level as the activation layer; a gate insulation layer covering the activation layer and the blister prevention layer and insulating the activation layer from the gate electrode; and an interconnection unit including first and second layers on a portion of the gate insulation layer overlying the blister prevention layer, wherein the blister prevention layer protects the interconnection unit on the gate insulation layer from blistering.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: February 10, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chun-Gi You, Joon-Hoo Choi
  • Patent number: 8927991
    Abstract: An OLED display includes a first polysilicon layer pattern on a substrate having a first gate electrode, a second gate electrode, and a first capacitor electrode, a gate insulating layer pattern, a second polysilicon layer pattern including a first active layer, a second active layer, and a capacitor polycrystalline dummy layer, a third amorphous silicon layer pattern including first source and drain resistant contact layers on a predetermined region of the first active layer, second source and drain resistant contact layers on a predetermined region of the second active layer, and a capacitor amorphous dummy layer on the capacitor polycrystalline dummy layer, and a data metal layer pattern including first source/drain electrodes, second source/drain electrodes, and a second capacitor electrode.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: January 6, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyu-Sik Cho, Joon-Hoo Choi, Byoung-Kwon Choo, Min-Chul Shin, Tae-Hoon Yang, Won-Kyu Lee, Yun-Gyu Lee, Bo-Kyung Choi, Yong-Hwan Park, Sang-Ho Moon
  • Publication number: 20140346448
    Abstract: An organic light-emitting display apparatus and a method of manufacturing the same. The organic light-emitting display apparatus includes an organic light-emitting device in which a pixel electrode, an intermediate layer that includes an emissive layer, and a cathode electrode are sequentially stacked. The cathode contact unit includes a cathode bus line that is formed on the same layer as the pixel electrode and contacts the cathode electrode, a first auxiliary electrode that is formed on the cathode bus line along an edge area of the cathode bus line, and a second auxiliary electrode that contacts the first auxiliary electrode.
    Type: Application
    Filed: September 10, 2013
    Publication date: November 27, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Chun-Gi YOU, Joon-Hoo Choi
  • Patent number: 8872165
    Abstract: A thin film transistor array substrate includes a thin film transistor including an activation layer, a gate electrode, source and drain electrodes, a first insulation layer between the activation layer and the gate electrode, and a second insulation layer between the gate electrode and the source and drain electrodes, a pixel electrode including a transparent conductive oxide, the pixel electrode being on a portion of the first insulation layer extending from the thin film transistor and being connected to one of the source and drain electrodes via an opening in the second insulation layer, a capacitor including a first electrode and a second electrode, the first electrode being on a same layer as the activation layer and including a transparent conductive oxide, and the second electrode being between the first and second insulation layers, and a third insulation layer covering the source and drain electrodes and exposing the pixel electrode.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: October 28, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chun-Gi You, Joon-Hoo Choi
  • Patent number: 8872181
    Abstract: A substrate includes an active layer, a gate electrode, source and drain electrodes, first and second insulating layers, a first line and a second line on a same layer as the gate electrode, the first line and the second line include a same material as the gate electrode and are aligned in a first direction, a third line crosses the first line, the third line is on a same layer as the source and drain electrodes, includes a same material as the source and drain electrodes, and is aligned in a second direction, a repair line on a same layer as the active layer, the repair line includes a same material as the active layer, a pixel electrode in the pixel region, and the pixel electrode is on a same layer as a lower electrode of the gate electrode and includes a same material as the lower electrode.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: October 28, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong-Hyun Park, Joon-Hoo Choi, Seong-Kweon Heo
  • Patent number: 8866145
    Abstract: An organic light-emitting display device includes a buffer layer on a substrate that has a plurality of insulating layers having different refractive indexes, and at least one of the insulating layers have different thicknesses on the same level. The device further includes an active layer of a thin film transistor in a thick area of the buffer layer, a pixel electrode in a thin area of the buffer layer, a gate electrode of the thin film transistor on the active layer and source and drain electrodes of the thin film transistor connected to the active layer, and a gate insulating layer between the gate electrode and the source and drain electrodes. The device also includes an emission layer on the pixel electrode, an opposite electrode facing the pixel electrode, and the emission layer is between the opposite electrode and the pixel electrode.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: October 21, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Bo-Kyung Choi, Kyu-Sik Cho, Sang-Ho Moon, Joon-Hoo Choi, Chung-Gi You, Sun Park, Jong-Hyun Park, Yul-Kyu Lee
  • Patent number: 8860032
    Abstract: A thin film transistor substrate that includes a substrate, first and second gate electrodes that are formed on the substrate, a gate insulating layer that is formed on the first and second gate electrodes, a first semiconductor and a second semiconductor that are formed on the gate insulating layer, and that overlap the first gate electrode and the second gate electrode, respectively, a first source electrode and a first drain electrode that are formed on the first semiconductor, and positioned opposed to and spaced from each other, a source electrode connected to the first drain electrode and a second drain electrode positioned opposed to and spaced from the second source electrode, wherein the second source and second drain electrodes are formed on the second semiconductor, and a pixel electrode that is electrically connected to the second drain electrode, a method of manufacturing the same, and a display apparatus having the same.
    Type: Grant
    Filed: May 14, 2009
    Date of Patent: October 14, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byoung-Kwon Choo, Joon-Hoo Choi, Kyu-Sik Cho, Seung-Kyu Park, Yong-Hwan Park, Sang-Ho Moon
  • Patent number: 8847231
    Abstract: An organic light emitting display device includes a substrate, a thin film transistor formed on the substrate and including an active layer, a gate electrode including a gate lower electrode and a gate upper electrode, a source electrode, and a drain electrode, an organic light emitting device electrically connected to the thin film transistor, wherein a pixel electrode formed of the same material as at least a part of the gate electrode in the same layer, an intermediate layer including a light emitting layer, and an opposed electrode arranged to face the pixel electrode are sequentially deposited.
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: September 30, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: June-Woo Lee, Chun-Gi You, Joon-Hoo Choi
  • Patent number: 8785937
    Abstract: An organic light-emitting display apparatus that includes a thin film transistor comprising an active layer, a gate electrode, and source and drain electrodes electrically connected to the active layer; a pixel electrode formed on the same layer as the gate electrode; a light-emitting layer formed on the pixel electrode; a passivation layer formed on upper surfaces of the source and drain electrodes and upper surfaces of wirings formed on the same layer as the source and drain electrodes; an organic insulating layer that covers the thin film transistor, comprises an opening that exposes an upper surface of the pixel electrode, and directly contacts the passivation layer; and a facing electrode that is formed on the light-emitting layer, and is formed to directly contact the organic insulating layer to face the pixel electrode.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: July 22, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: June-Woo Lee, Joon-Hoo Choi
  • Publication number: 20140199797
    Abstract: An organic light-emitting display and a method of manufacturing the organic light-emitting display are disclosed. In one embodiment, the organic light-emitting display includes: i) a pixel electrode disposed on a substrate, ii) an opposite electrode disposed opposite to the pixel electrode, iii) an organic emission layer disposed between the pixel electrode and the opposite electrode; a light-scattering portion disposed between the substrate and the organic emission layer, including a plurality of scattering patterns for scattering light emitted from the organic emission layer in insulating layers having different refractive indexes. The display may further include a plurality of light absorption portions disposed between the light-scattering portion and the organic emission layer to correspond to the scattering patterns.
    Type: Application
    Filed: March 17, 2014
    Publication date: July 17, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Sang-Ho MOON, Joon-Hoo Choi, Kyu-Sik Cho