Patents by Inventor Yul-Kyu Lee

Yul-Kyu Lee 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: 9136506
    Abstract: A thin-film transistor array substrate, an organic light-emitting display having the same, and a method of manufacturing the organic light-emitting display are disclosed. In one embodiment, the thin-film transistor array substrate includes a buffer layer formed on a substrate, a first insulating layer formed on the buffer layer, a pixel electrode formed on the first insulating layer using a transparent conductive material, an intermediate layer that covers an upper side and outer side-surfaces of the pixel electrode and includes a organic light-emitting layer, a gap formed by etching the first insulating layer and the buffer layer at a peripheral of the pixel electrode, and a facing electrode that is formed on an upper side and outer side-surfaces of the pixel electrode to cover the intermediate layer and the gap.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: September 15, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dae-Woo Kim, Jong-Hyun Park, Yul-Kyu Lee
  • Patent number: 9123594
    Abstract: In an organic light-emitting display apparatus and a method of manufacturing the same, the organic light-emitting display apparatus comprises: at least one transistor, each including a semiconductor layer, a gate electrode, and source and drain electrodes; a first capacitor including a first electrode formed on the same plane as the semiconductor layer, a second electrode formed on the same plane as the gate electrode, and a third electrode formed on the same plane as the source and drain electrodes; a second capacitor including a first electrode formed on the same plane as the semiconductor layer and comprising ion impurities, and a second electrode formed on the same plane as the gate electrode; a pixel electrode formed on the same plane as the gate electrode and electrically connected to the transistor; a light-emitting layer disposed on the pixel electrode; and an opposite electrode disposed on the light-emitting layer and facing the pixel electrode.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: September 1, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yul-Kyu Lee, Chun-Gi You, Sun Park, Jong-Hyun Park, Sang-Ho Moon, Na-Young Kim
  • Patent number: 9076693
    Abstract: Display substrates are disclosed. In one aspect, display substrates include a first signal line, a second signal line, a first detour signal line and a second detour signal line. The first signal line includes a first region and a pair of second regions disposed on opposite sides of the first region. The pair of second regions are spaced apart from the first region. The second signal line crosses the first signal line. The second signal line includes a third region and a pair of fourth regions disposed on opposite sides of the third region. The pair of fourth regions are spaced apart from the third region. The first detour signal line electrically connects the pair of second regions to each other. The second detour signal line electrically connects the pair of fourth regions to each other. Related methods are also disclosed.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: July 7, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yul Kyu Lee, Sun Park, Jong-Hyun Park, Jun Hoo Choi
  • Patent number: 9064755
    Abstract: An organic light-emitting display device having a thin film transistor including an active layer, a gate electrode, a lower gate electrode, an upper gate electrode, an insulating layer covering the gate electrode, source and drain electrodes that are formed on the insulating layer and contact the active layer. An organic light-emitting diode is electrically connected to the thin film transistor and includes a pixel electrode formed at the same layer level as the lower gate electrode, an intermediate layer including an emission layer, and a counter electrode. A lower pad electrode is formed at the same layer level as the lower gate electrode and an upper pad electrode is formed at the same layer level as the upper gate electrode.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: June 23, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sun Park, Yul-Kyu Lee, Chun-Gi You
  • Patent number: 9040999
    Abstract: An organic light emitting display device includes an active layer of a transistor disposed on a substrate, a gate electrode disposed on the active layer and on a first insulation layer, a second insulation layer which is disposed on the gate electrode and exposes a source area and a drain area of the active layer, a drain electrode which is disposed on the second insulation layer and is connected to an exposed area of the drain area, a third insulation layer on the drain electrode, and a cathode electrode on the third insulation layer, where the cathode electrode penetrates the first insulation layer, the second insulation layer and the third insulation layer, and the cathode electrode is connected to an exposed area of the source area.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: May 26, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yul-Kyu Lee, Kyu-Sik Cho, Sun Park, Ji-Hoon Song
  • Patent number: 9029850
    Abstract: An organic light-emitting display apparatus includes a thin film transistor including an active layer, a gate electrode, source and drain electrodes, a first insulating layer between the active layer and the gate electrode, and a second insulating layer between the gate electrode and the source and drain electrodes, a third insulating layer covering the source and drain electrodes, the third insulating layer being an organic insulating layer, a pixel electrode including a semi-transparent metal layer and having an end located in a trench formed around the first insulating layer, a fourth insulating layer including an opening exposing a top surface of the pixel electrode, the fourth insulating layer being an organic insulating layer, an organic light-emitting layer on the pixel electrode, and a counter electrode on the organic light-emitting layer.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: May 12, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yul-Kyu Lee, Kyung-Hoon Park, Sun Park, Yeong-Ho Song, Ji-Hoon Song
  • Publication number: 20150108452
    Abstract: An organic light-emitting display apparatus includes a pad electrode, an interlayer insulating layer on the pad electrode, a conductive barrier layer, and a planarization insulating layer. The interlayer insulating layer includes a plurality of openings that expose an upper surface of the pad electrode. The conductive barrier layer is on the plurality of openings and the interlayer insulating layer. The planarization insulating layer covers an edge of the conductive barrier layer. The planarization insulating layer is in the openings.
    Type: Application
    Filed: September 23, 2014
    Publication date: April 23, 2015
    Inventors: Kyung-Hoon PARK, Sun PARK, Yeong-Ho SONG, Yul-Kyu LEE, Won-Ho JANG
  • Patent number: 9012893
    Abstract: A display apparatus includes a substrate including a display area, an encapsulation member facing the substrate, a pad unit around the display area of the substrate, the pad unit including a contact area and an exposure area that is spaced apart from the contact area, and a flexible printed circuit (FPC) that is connected to the contact area of the pad unit and is curved towards the encapsulation member.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: April 21, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sun Park, Yul-Kyu Lee, Chun-Gi You, Ji-Hoon Song
  • Publication number: 20150102316
    Abstract: An organic light-emitting diode (OLED) display is disclosed. In one aspect, the OLED display includes a thin film transistor including an active layer, a gate electrode, a source electrode, and a drain electrode, a first insulating layer arranged between the active layer and the gate electrode, and a second insulating layer arranged between the gate, source, and drain electrodes. The OLED display also includes a third insulating layer covering the source and drain electrodes, wherein an opening is defined in each of the second and third insulating layers and wherein the openings substantially overlap. The OLED display further includes a pixel electrode formed in the openings defined in the second and third insulating layers and including a semi-permeable metal layer.
    Type: Application
    Filed: August 14, 2014
    Publication date: April 16, 2015
    Inventors: Kyung-Hoon PARK, Sun PARK, Yeong-Ho SONG, Ji-Hoon SONG, Chun-Gi YOU, Yul-Kyu LEE
  • Patent number: 8987725
    Abstract: A flat panel display device including a substrate including first and second regions; an active layer on the first region of the substrate including a semiconductor material; a lower electrode on the second region of the substrate including the semiconductor material; a first insulating layer on the substrate including the active layer and the lower electrode thereon; a gate electrode on the first insulating layer overlying the active layer and including a first conductive layer pattern and a second conductive layer pattern; an upper electrode on the first insulating layer overlying the lower electrode and including the first conductive layer pattern and the second conductive layer pattern; a second insulating layer on the gate electrode and the upper electrode exposing portions of the active layer and portions of the upper electrode; and a source electrode and a drain electrode connected to the exposed portions of the active layer.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: March 24, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-Hee Kang, Chun-Gi You, Sun Park, Jong-Hyun Park, Yul-Kyu Lee
  • Publication number: 20150060792
    Abstract: An organic light-emitting display apparatus including: a substrate; at least one thin-film transistor disposed on the substrate; at least one capacitor disposed on the substrate and including a first electrode and a second electrode; a pixel electrode connected to the at least one thin-film transistor; a counter electrode facing the pixel electrode and including a reflective material; an organic emission layer disposed between the pixel electrode and the counter electrode; a first optical characteristic adjusting layer disposed between the substrate and the pixel electrode and formed on a same layer as the second electrode of the at least one capacitor; and a second optical characteristic adjusting layer disposed between the first optical characteristic adjusting layer and the pixel electrode.
    Type: Application
    Filed: June 17, 2014
    Publication date: March 5, 2015
    Inventors: Yul-Kyu Lee, Kyung-Hoon Park, Sun Park, Joo-Hyeon Jo
  • Patent number: 8952368
    Abstract: A thin film transistor, a method of manufacturing the same, and a display device including the same, the thin film transistor including a substrate; a polysilicon semiconductor layer on the substrate; and a metal pattern between the semiconductor layer and the substrate, the metal pattern being insulated from the semiconductor layer, wherein the polysilicon of the semiconductor layer includes a grain boundary parallel to a crystallization growing direction, and a surface roughness of the polysilicon semiconductor layer defined by a distance between a lowest peak and a highest peak in a surface thereof is less than about 15 nm.
    Type: Grant
    Filed: May 20, 2013
    Date of Patent: February 10, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong-Hyun Park, Chun-Gi You, Sun Park, Jin-Hee Kang, Yul-Kyu Lee
  • Patent number: 8952358
    Abstract: An organic light-emitting display apparatus including a substrate; a black matrix layer formed over the substrate; an insulating layer formed over the black matrix layer; a thin film transistor (TFT) formed over the insulating layer; a pixel electrode connected to the TFT; and an organic layer formed over the pixel electrode. At least one hole is formed in at least one of the black matrix layer and the insulating layer, in a region where the black matrix layer and the insulating layer overlap each other.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: February 10, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sun Park, Chun-Gi You, Jong-Hyun Park, Jin-Hee Kang, Yul Kyu Lee
  • Patent number: 8933451
    Abstract: An organic light emitting display device and method of manufacturing the same are provided. The organic light emitting display device includes: a thin film transistor (TFT) comprising an active layer, a gate electrode, a source electrode, and a drain electrode; an organic light emitting device including a pixel electrode electrically connected to the TFT and formed of the same material and on a same layer as the gate electrode, an emission layer, and an opposing electrode; and a pad electrode formed of the same material and on same layer as the gate electrode. The pad electrode has openings formed therein.
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: January 13, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dae-Woo Kim, Chun-Gi You, Sun Park, Jong-Hyun Park, Yul-Kyu Lee
  • Patent number: 8928601
    Abstract: An organic light emitting display apparatus having a capacitive touch panel function, and a method of manufacturing the same is disclosed. The organic light emitting display apparatus includes a touch unit including a pixel region and a pad region, and an insulating layer formed only on a surface of the pixel region by using an open mask. The organic light emitting display apparatus is manufactured without performing a photolithography process on an insulating layer, thereby improving productivity of the manufacturing process.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: January 6, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yul-Kyu Lee, Chun-Gi You
  • Patent number: 8916855
    Abstract: An organic light-emitting display apparatus includes a thin film transistor having an active layer, a gate electrode, and source and drain electrodes, an organic light-emitting device having a pixel electrode connected to the thin film transistor, an intermediate layer including an emissive layer, and an opposite electrode, and an opposite electrode contact portion having a joining region and an insulating region. The opposite electrode and a power interconnection line contact each other in the joining region. An insulating layer is interposed between the opposite electrode and the power interconnection line in the insulating region, and a portion of the insulating layer penetrates into the power interconnection line in the insulating region.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: December 23, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sun Park, Yul-Kyu Lee, Kyu-Sik Cho, Ji-Hoon Song
  • Publication number: 20140353620
    Abstract: The organic light emitting display device includes a substrate including a thin film transistor (TFT) formed thereon, the TFT including a first insulating layer disposed between an active layer and a gate electrode, and a second insulating layer disposed between the gate electrode and source and drain electrodes; a pad electrode including a first pad layer disposed on a same layer as that where the source and drain electrodes are formed, and a second pad layer on the first pad layer; a bonding assistant layer on the substrate; a third insulating layer on the bonding assistant layer and including a first opening; a pixel electrode disposed in the first opening and electrically coupled to one of the source and drain electrodes; and a fourth insulating layer on the pixel electrode to cover a peripheral end portion of the pixel electrode and defining a pixel through a second opening.
    Type: Application
    Filed: November 26, 2013
    Publication date: December 4, 2014
    Inventors: Kyung-Hoon Park, Sun Park, Yeong-Ho Song, Ji-Hoon Song, Yul-Kyu Lee
  • Publication number: 20140353603
    Abstract: An organic light emitting display device includes an active layer of a transistor disposed on a substrate, a gate electrode disposed on the active layer and on a first insulation layer, a second insulation layer which is disposed on the gate electrode and exposes a source area and a drain area of the active layer, a drain electrode which is disposed on the second insulation layer and is connected to an exposed area of the drain area, a third insulation layer on the drain electrode, and a cathode electrode on the third insulation layer, where the cathode electrode penetrates the first insulation layer, the second insulation layer and the third insulation layer, and the cathode electrode is connected to an exposed area of the source area.
    Type: Application
    Filed: October 10, 2013
    Publication date: December 4, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Yul-Kyu Lee, Kyu-Sik Cho, Sun Park, Ji-Hoon Song
  • Publication number: 20140353644
    Abstract: An organic light-emitting display apparatus includes: a thin film transistor including an active layer, a gate electrode, a source electrode, a drain electrode, a first insulating layer, and a second insulating layer; a pad electrode comprising a first pad layer and a second pad layer on the first pad layer; a third insulating layer covering the source electrode and the drain electrode and an end portion of the pad electrode; a pixel electrode comprising a semi-transmissive electrically conductive layer at an opening in the third insulating layer; a protection layer between the pixel electrode and the first insulating layer; a fourth insulating layer having an opening at a location corresponding to the opening formed in the third insulating layer and covering the end portion of the pad electrode; an emission layer on the pixel electrode; and an opposing electrode on the emission layer.
    Type: Application
    Filed: May 30, 2014
    Publication date: December 4, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Chun-Gi You, Sun Park, Yul-Kyu Lee
  • Publication number: 20140353634
    Abstract: An organic light-emitting display apparatus includes a thin film transistor including an active layer, a gate electrode, source and drain electrodes, a first insulating layer between the active layer and the gate electrode, and a second insulating layer between the gate electrode and the source and drain electrodes, a third insulating layer covering the source and drain electrodes, the third insulating layer being an organic insulating layer, a pixel electrode including a semi-transparent metal layer and having an end located in a trench formed around the first insulating layer, a fourth insulating layer including an opening exposing a top surface of the pixel electrode, the fourth insulating layer being an organic insulating layer, an organic light-emitting layer on the pixel electrode, and a counter electrode on the organic light-emitting layer.
    Type: Application
    Filed: May 16, 2014
    Publication date: December 4, 2014
    Inventors: Yul-Kyu LEE, Kyung-Hoon PARK, Sun PARK, Yeong-Ho SONG, Ji-Hoon SONG