Patents by Inventor Wang Jo Lee

Wang Jo 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).

  • Publication number: 20180145119
    Abstract: An organic light emitting display (OLED) device includes a substrate including a light emitting region and a peripheral region. An auxiliary power supply wire is disposed in the peripheral region. A lower electrode is disposed in the light emitting region. A pixel defining layer, disposed on the substrate, exposes a portion of the lower electrode and a portion of the auxiliary power supply wire. A first common layer, disposed on the pixel defining layer and the lower electrode, exposes the auxiliary power supply wire. A light emitting structure is disposed on the first common layer. The light emitting structure exposes the auxiliary power supply wire. A second common layer is disposed on the light emitting structure, the second common layer covering the light emitting structure and exposing the auxiliary power supply wire. An upper electrode is disposed on the second common layer and contacts the auxiliary power supply wire.
    Type: Application
    Filed: January 3, 2018
    Publication date: May 24, 2018
    Inventors: Deok-Young CHOI, Young-Jin CHO, Yong-Jae KIM, Kyoung-Jin PARK, Jin-Gon OH, Wang-Jo LEE
  • Patent number: 9893128
    Abstract: An organic light emitting display (OLED) device includes a substrate including a light emitting region and a peripheral region. An auxiliary power supply wire is disposed in the peripheral region. A lower electrode is disposed in the light emitting region. A pixel defining layer, disposed on the substrate, exposes a portion of the lower electrode and a portion of the auxiliary power supply wire. A first common layer, disposed on the pixel defining layer and the lower electrode, exposes the auxiliary power supply wire. A light emitting structure is disposed on the first common layer. The light emitting structure exposes the auxiliary power supply wire. A second common layer is disposed on the light emitting structure, the second common layer covering the light emitting structure and exposing the auxiliary power supply wire. An upper electrode is disposed on the second common layer and contacts the auxiliary power supply wire.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: February 13, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Deok-Young Choi, Young-Jin Cho, Yong-Jae Kim, Kyoung-Jin Park, Jin-Gon Oh, Wang-Jo Lee
  • Publication number: 20170278910
    Abstract: An organic light emitting display (OLED) device includes a substrate including a light emitting region and a peripheral region. An auxiliary power supply wire is disposed in the peripheral region. A lower electrode is disposed in the light emitting region. A pixel defining layer, disposed on the substrate, exposes a portion of the lower electrode and a portion of the auxiliary power supply wire. A first common layer, disposed on the pixel defining layer and the lower electrode, exposes the auxiliary power supply wire. A light emitting structure is disposed on the first common layer. The light emitting structure exposes the auxiliary power supply wire. A second common layer is disposed on the light emitting structure, the second common layer covering the light emitting structure and exposing the auxiliary power supply wire. An upper electrode is disposed on the second common layer and contacts the auxiliary power supply wire.
    Type: Application
    Filed: December 27, 2016
    Publication date: September 28, 2017
    Inventors: Deok-Young CHOI, Young-Jin CHO, Yong-Jae KIM, Kyoung-Jin PARK, Jin-Gon OH, Wang-Jo LEE
  • Patent number: 9589503
    Abstract: An organic light-emitting display apparatus includes: a power voltage generation unit configured to generate a first power voltage and a dummy power voltage having a different level from that of the first power voltage; a power voltage wiring network to which the first power voltage is applied; a dummy power voltage line to which the dummy power voltage is applied; a plurality of pixels each comprising an emission device and a pixel circuit electrically coupled to the power voltage wiring network; a plurality of dummy pixels each comprising a dummy circuit connectable to the dummy power voltage line; and a plurality of repair lines each connectable to the dummy circuit of a corresponding dummy pixel among the plurality of dummy pixels and to the emission devices of corresponding pixels among the plurality of pixels.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: March 7, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Hye Kong, Sung-Jae Moon, Wang-Jo Lee
  • Patent number: 9542882
    Abstract: An organic light emitting diode display includes: a panel; a data driver connected to a data line formed on the panel; a gate driver crossing the data line in an insulated manner and connected to gate lines formed on the panel; an input line for receiving clock signals from the outside; a first connecting line electrically connected to the input line to supply the clock signal to the gate driver; a second connecting line electrically connected to the input line; and a third connecting line extended from the second connecting line to electrically connect the second connecting line and the first connecting line.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: January 10, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ki-Nyeng Kang, Na-Young Kim, Wang-Jo Lee, In-Ho Choi, Yong-Sung Park
  • Patent number: 9437141
    Abstract: A scan driver includes: a plurality of scan driving blocks including an output terminal outputting a scan signal to a scan line; a first transistor transmitting a voltage of a power source to the output terminal; a second transistor transmitting a clock signal to the output terminal; and a third transistor including a gate electrode connected to a node formed with a gate-on voltage turning on the second transistor, one terminal connected to the power source, and the other terminal connected to the gate electrode of the first transistor. The scan driver may reduce the influence of a leakage current even though application of the scan signal is increased, and a scan signal of a uniform voltage level may be output.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: September 6, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Wang-Jo Lee, Hyung-Soo Kim, In-Ho Choi, Choon-Yul Oh, Ho-Ryun Chung, Joo-Hyeon Jeong, Myoung-Hwan Yoo, Jin-Woo Kim, Naoaki Komiya
  • Patent number: 9384695
    Abstract: An organic light-emitting display apparatus for forming a frame by utilizing a plurality of subfields to display gradation. The organic light-emitting display apparatus includes a light-emitting pixel on a display area, a dummy pixel on a dummy area adjacent to the display area, and a repair line coupled to the dummy pixel. The light-emitting pixel is configured to emit light according to a logic level of a data signal applied during each of the subfields, and to adjust an emission time. The repair line is configured to couple the dummy pixel to a light-emitting element when the light-emitting element is separated from the light-emitting pixel, to provide a path to control a light emission of the light-emitting element according to a logic level of a dummy data signal applied to the dummy pixel.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: July 5, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Hoon Lee, Sung-Jae Moon, Wang-Jo Lee, Jong-Hyun Choi, Yong-Duck Son
  • Patent number: 9293516
    Abstract: A display device comprises a substrate, a first pixel on the substrate, the first pixel comprising a first subpixel, a second subpixel, and a third subpixel, a second pixel on the substrate, the second pixel comprising a fourth subpixel, a fifth subpixel, and a sixth subpixel, first, second, third and fourth power supply lines extending in one direction and respectively coupled to the first, third, fifth, and sixth subpixels, and fifth and sixth power supply lines crossing the first, second, third, and fourth power supply lines and respectively coupled to the fourth and second subpixels.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: March 22, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Deok-Young Choi, Wang-Jo Lee
  • Patent number: 9257069
    Abstract: A controller for a display panel may include a first supply circuit to output first and second driving voltages to a sub-pixel of a first color; and a second supply circuit to output third and fourth driving voltages to a sub-pixel of a second color. The first driving voltage may be greater than the second driving voltage, and the third driving voltage may be greater than the fourth driving voltage. Also, at least three of the first, second, third, and fourth driving voltages may be different from one another.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: February 9, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Leonid Kaplan, Heung-Yeol Na, Ho-Ryun Chung, Wang-Jo Lee, Jang-Doo Lee
  • Publication number: 20150248861
    Abstract: An organic light-emitting display apparatus includes: a power voltage generation unit configured to generate a first power voltage and a dummy power voltage having a different level from that of the first power voltage; a power voltage wiring network to which the first power voltage is applied; a dummy power voltage line to which the dummy power voltage is applied; a plurality of pixels each comprising an emission device and a pixel circuit electrically coupled to the power voltage wiring network; a plurality of dummy pixels each comprising a dummy circuit connectable to the dummy power voltage line; and a plurality of repair lines each connectable to the dummy circuit of a corresponding dummy pixel among the plurality of dummy pixels and to the emission devices of corresponding pixels among the plurality of pixels.
    Type: Application
    Filed: July 16, 2014
    Publication date: September 3, 2015
    Inventors: Ji-Hye Kong, Sung-Jae Moon, Wang-Jo Lee
  • Patent number: 9105230
    Abstract: An organic light emitting diode (OLED) display is disclosed. In one embodiment, the OLED display includes a panel including pixels which are configured to control an amount of current that flows from a first power source to a second power source to generate an image of predetermined brightness. The display may also include at least one first power source line formed on a top of the panel and at least one second power source line positioned on a bottom of the panel to face the first power source line. The display may further include a first switch configured to alternately supply the first power source to the first power source line and the second power source line.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: August 11, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ki-Wook Kim, Wang-Jo Lee, Dae-Hyun Noh
  • Publication number: 20150187859
    Abstract: A display device comprises a substrate, a first pixel on the substrate, the first pixel comprising a first subpixel, a second subpixel, and a third subpixel, a second pixel on the substrate, the second pixel comprising a fourth subpixel, a fifth subpixel, and a sixth subpixel, first, second, third and fourth power supply lines extending in one direction and respectively coupled to the first, third, fifth, and sixth subpixels, and fifth and sixth power supply lines crossing the first, second, third, and fourth power supply lines and respectively coupled to the fourth and second subpixels.
    Type: Application
    Filed: July 10, 2014
    Publication date: July 2, 2015
    Inventors: Deok-Young Choi, Wang-Jo Lee
  • Patent number: 9058774
    Abstract: A pixel includes a first transistor coupled between a first power source and a first node, the first transistor including a gate electrode coupled to a second node, an organic light emitting diode (OLED) coupled between the first node and a second power source, a second transistor for supplying a data signal to the second node in response to a scan signal, a third transistor having a source electrode and a drain electrode electrically coupled to each other, the third transistor being coupled to the first power source and the second node, and a fourth transistor having a source electrode and a drain electrode electrically coupled to each other, the fourth transistor being coupled between the second node and the first node.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: June 16, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jeong-Keun Ahn, Wang-Jo Lee
  • Publication number: 20150161931
    Abstract: An organic light-emitting display apparatus for forming a frame by utilizing a plurality of subfields to display gradation. The organic light-emitting display apparatus includes a light-emitting pixel on a display area, a dummy pixel on a dummy area adjacent to the display area, and a repair line coupled to the dummy pixel. The light-emitting pixel is configured to emit light according to a logic level of a data signal applied during each of the subfields, and to adjust an emission time. The repair line is configured to couple the dummy pixel to a light-emitting element when the light-emitting element is separated from the light-emitting pixel, to provide a path to control a light emission of the light-emitting element according to a logic level of a dummy data signal applied to the dummy pixel.
    Type: Application
    Filed: April 22, 2014
    Publication date: June 11, 2015
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae-Hoon Lee, Sung-Jae Moon, Wang-Jo Lee, Jong-Hyun Choi, Yong-Duck Son
  • Patent number: 9053986
    Abstract: A semiconductor device includes a semiconductor layer on a substrate, a gate electrode electrically insulated from the semiconductor layer by a gate insulating layer, an insulating layer on the gate insulating layer and on the gate electrode, and a source electrode and a drain electrode on the insulating layer, the source and drain electrode being connected to the semiconductor layer. The source electrode overlaps at least a part of the gate electrode. The source electrode, the insulating layer, and the gate electrode overlap each other so as to provide a capacitor.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: June 9, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jeong-Keun Ahn, Wang-Jo Lee
  • Patent number: 9047821
    Abstract: A scan driver includes a first decoder generating a plurality of output signals through a plurality of first logic gates, and a second decoder including a plurality of first logic circuits connected to a first terminal of a plurality of scan lines and a plurality of second logic circuits connected to a second terminal of the plurality of scan lines. The plurality of first logic circuits supply a source current to a corresponding scan line according to the corresponding output signal among the plurality of output signals. The plurality of second logic circuits sinks a sink current to the corresponding scan line according to the corresponding output signal among the plurality of output signals.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: June 2, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Do-Ik Kim, Wang-Jo Lee
  • Publication number: 20150015467
    Abstract: A display device includes: a unit pixel including subpixels electrically connected to first power voltages and a second power voltage, where the first power voltages include a first first power voltage and a second first power voltage, and where the subpixels include: a first subpixel electrically connected to the first first power voltage and the second power voltage; a second subpixel electrically connected to the second first power voltage and the second power voltage; and a third subpixel electrically connected to the second first power voltage and the second power voltage, where the first power voltage is a voltage having substantially a same level as a voltage, with which the first subpixel emits light at maximum luminance, and the second power voltage is a voltage having substantially a same level as a voltage, with which the second subpixel or the third subpixel emits light at maximum luminance.
    Type: Application
    Filed: December 3, 2013
    Publication date: January 15, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Leonid KAPLAN, Heung-Yeol NA, Ho-Ryun CHUNG, Wang-Jo LEE, Jang-Doo LEE
  • Patent number: 8916878
    Abstract: A thin film transistor includes a substrate, a gate electrode on the substrate, an active layer spaced from the gate electrode, a source electrode and a drain electrode spaced from the gate electrode and coupled to the active layer, a gate wiring at a same layer as the gate electrode and coupled to the gate electrode, and first conductive members electrically coupled to, and overlapping, the gate wiring.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: December 23, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung-Bae Kim, Yong-Sung Park, Wang-Jo Lee, Hae-Yeon Lee, Keum-Nam Kim
  • Publication number: 20140313242
    Abstract: A controller for a display panel may include a first supply circuit to output first and second driving voltages to a sub-pixel of a first color; and a second supply circuit to output third and fourth driving voltages to a sub-pixel of a second color. The first driving voltage may be greater than the second driving voltage, and the third driving voltage may be greater than the fourth driving voltage. Also, at least three of the first, second, third, and fourth driving voltages may be different from one another.
    Type: Application
    Filed: December 17, 2013
    Publication date: October 23, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Leonid KAPLAN, Heung-Yeol NA, Ho-Ryun CHUNG, Wang-Jo LEE, Jang-Doo LEE
  • Patent number: 8785936
    Abstract: An organic electroluminescent display device including a plurality of scan lines and a plurality of data lines crossing the scan lines, a plurality of pixels at regions defined by the scan lines and the data lines, and one or more thin-film transistors (TFTs) for selectively applying voltages to each of the pixels, wherein the data lines are successively located at a side of the pixels, and a first TFT of the TFTs is located at least partially between an area corresponding to an nth data line of the data lines and an area corresponding to an (n?1)th data line of the data lines, the nth data line and the (n?1)th data line being successively positioned.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: July 22, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Na-Young Kim, Ki-Nyeng Kang, Wang-Jo Lee, In-Ho Choi, Jin-Gon Oh