Patents by Inventor Ki-Wan Ahn

Ki-Wan Ahn 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: 11094764
    Abstract: A display substrate includes a data line extending in a first direction, a first transistor including a first channel area overlapping the data line and a first control electrode which overlaps the first channel area and has a substantially same shape as that of the first channel area in an overlap area in which the first control electrode overlaps the first channel area, a scan line extending in a second direction crossing the first direction, a first voltage line extending in the first direction and transfers a first driving signal, a first capacitor including an extension electrode which overlaps the first control electrode and extends in the second direction from the first voltage line and a second capacitor including an overlap electrode overlapping the data line.
    Type: Grant
    Filed: January 3, 2020
    Date of Patent: August 17, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sung-Eun Lee, Jin-Taek Kim, Ki-Wan Ahn, Joo-Sun Yoon, Yong-Jae Jang, Kwang-Young Choi
  • Publication number: 20200144346
    Abstract: A display substrate includes a data line extending in a first direction, a first transistor including a first channel area overlapping the data line and a first control electrode which overlaps the first channel area and has a substantially same shape as that of the first channel area in an overlap area in which the first control electrode overlaps the first channel area, a scan line extending in a second direction crossing the first direction, a first voltage line extending in the first direction and transfers a first driving signal, a first capacitor including an extension electrode which overlaps the first control electrode and extends in the second direction from the first voltage line and a second capacitor including an overlap electrode overlapping the data line.
    Type: Application
    Filed: January 3, 2020
    Publication date: May 7, 2020
    Inventors: Sung-Eun LEE, Jin-Taek KIM, Ki-Wan AHN, Joo-Sun YOON, Yong-Jae JANG, Kwang-Young CHOI
  • Patent number: 10553661
    Abstract: A display substrate includes a data line extending in a first direction, a first transistor including a first channel area overlapping the data line and a first control electrode which overlaps the first channel area and has a substantially same shape as that of the first channel area in an overlap area in which the first control electrode overlaps the first channel area, a scan line extending in a second direction crossing the first direction, a first voltage line extending in the first direction and transfers a first driving signal, a first capacitor including an extension electrode which overlaps the first control electrode and extends in the second direction from the first voltage line and a second capacitor including an overlap electrode overlapping the data line.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: February 4, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sung-Eun Lee, Jin-Taek Kim, Ki-Wan Ahn, Joo-Sun Yoon, Yong-Jae Jang, Kwang-Young Choi
  • Patent number: 10347869
    Abstract: A method of manufacturing an organic light-emitting display device is provided. The method includes forming a pixel electrode, forming a hydrophobic material layer on the pixel electrode, wherein the hydrophobic material layer includes a hydrophobic material, forming a pixel-defining layer by patterning the hydrophobic material layer, so as to expose at least a portion of the pixel electrode, and removing the hydrophobic material on the exposed portion of the pixel electrode using surface treatment.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: July 9, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ki-Wan Ahn, Jae-Hyuck Jang
  • Patent number: 10319711
    Abstract: An organic light emitting display device includes a substrate including a pixel region and a peripheral region, a first wiring, a second wiring, a third wiring, and an electrostatic protection structure including electrostatic protection diodes coupled to the first, second, and third wirings. The electrostatic protection diodes each include an active pattern, a gate electrode pattern, and a connection pattern. The active pattern is at the peripheral region of the substrate, and has a first region, a second region spaced apart from the first region, and a third region between the first and second regions. The gate electrode pattern is at the third region on the active pattern. The connection pattern is coupled to the gate electrode pattern and the active pattern and is on the gate electrode pattern, and overlaps a portion of the first region of the active pattern and a portion of the third region.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: June 11, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung-Hyun Kim, Yeon-Hong Kim, Ki-Wan Ahn
  • Publication number: 20180122880
    Abstract: A display substrate includes a data line extending in a first direction, a first transistor including a first channel area overlapping the data line and a first control electrode which overlaps the first channel area and has a substantially same shape as that of the first channel area in an overlap area in which the first control electrode overlaps the first channel area, a scan line extending in a second direction crossing the first direction, a first voltage line extending in the first direction and transfers a first driving signal, a first capacitor including an extension electrode which overlaps the first control electrode and extends in the second direction from the first voltage line and a second capacitor including an overlap electrode overlapping the data line.
    Type: Application
    Filed: September 25, 2017
    Publication date: May 3, 2018
    Inventors: Sung-Eun LEE, Jin-Taek KIM, Ki-Wan AHN, Joo-Sun YOON, Yong-Jae JANG, Kwang-Young CHOI
  • Patent number: 9923039
    Abstract: A display device includes a substrate and first, second and third thin film transistor. The first thin film transistor is disposed over the substrate, and includes a first gate electrode which has a first transmittance. The second thin film transistor is disposed over the substrate, and includes a second gate electrode which has a second transmittance substantially different from the first transmittance. The third thin film transistor is disposed over the substrate, and includes a third gate electrode which has a third transmittance substantially different from the first transmittance.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: March 20, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ki-Wan Ahn, Yong-Jae Jang
  • Patent number: 9923042
    Abstract: An organic light-emitting diode (OLED) display is disclosed. In one aspect, the display includes a substrate and a plurality of pixels formed over the substrate. Each of the pixels comprises a first region configured to emit light and a second region configured to pass external light therethrough. The second regions of at least three adjacent ones of the pixels have different areas.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: March 20, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo-Sun Yoon, Ki-Wan Ahn
  • Publication number: 20180076192
    Abstract: An organic light emitting display device includes a substrate including a pixel region and a peripheral region, a first wiring, a second wiring, a third wiring, and an electrostatic protection structure including electrostatic protection diodes coupled to the first, second, and third wirings. The electrostatic protection diodes each include an active pattern, a gate electrode pattern, and a connection pattern. The active pattern is at the peripheral region of the substrate, and has a first region, a second region spaced apart from the first region, and a third region between the first and second regions. The gate electrode pattern is at the third region on the active pattern. The connection pattern is coupled to the gate electrode pattern and the active pattern and is on the gate electrode pattern, and overlaps a portion of the first region of the active pattern and a portion of the third region.
    Type: Application
    Filed: June 30, 2017
    Publication date: March 15, 2018
    Inventors: Jung-Hyun KIM, Yeon-Hong KIM, Ki-Wan AHN
  • Patent number: 9899632
    Abstract: A display panel includes a substrate, light emitting structures disposed on an upper surface of the substrate in pixel regions, an encapsulation substrate disposed over the light emitting structures, and a light blocking member disposed on a lower surface of the substrate. The light blocking member has blocking portions corresponding to the pixel regions and openings corresponding to transparent regions.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: February 20, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ki-Wan Ahn, Yong-Jae Jang
  • Patent number: 9660010
    Abstract: An organic light emitting display device includes a substrate, a first insulating layer, a extension of a drain electrode, a second insulating layer, a first electrode, an emission layer, and a second electrode. The substrate has a display region and a transparent region. The first insulating layer is disposed on the substrate. The extension of drain electrode is disposed on the first insulating layer. The second insulating layer is disposed on the extension of a drain electrode such that an edge portion of the extension of a drain electrode is free from overlap with the second insulating layer. The first electrode is disposed on the second insulating layer and in contact with the edge portion of the extension of a drain electrode. The emission layer is disposed on the first electrode. The second electrode is disposed on the emission layer.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: May 23, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Ho Park, Joung-Keun Park, Ki-Wan Ahn, Joo-Sun Yoon, Seung-Min Lee, Yong-Jae Jang
  • Publication number: 20170005294
    Abstract: A method of manufacturing an organic light-emitting display device is provided. The method includes forming a pixel electrode, forming a hydrophobic material layer on the pixel electrode, wherein the hydrophobic material layer includes a hydrophobic material, forming a pixel-defining layer by patterning the hydrophobic material layer, so as to expose at least a portion of the pixel electrode, and removing the hydrophobic material on the exposed portion of the pixel electrode using surface treatment.
    Type: Application
    Filed: September 13, 2016
    Publication date: January 5, 2017
    Inventors: Ki-Wan AHN, Jae-Hyuck JANG
  • Patent number: 9525016
    Abstract: An organic light emitting display device includes a substrate including a plurality of pixel regions and a plurality of transparent regions, thin film transistors disposed in the pixel regions, an insulation layer disposed on the thin film transistors, first electrodes electrically contacting the thin film transistors, a pixel defining layer including a black material disposed on the first electrodes, organic light emitting structures disposed on the pixel defining layer, and a second electrode disposed on the organic light emitting structures. The pixel defining layer may define an asymmetrical configuration of adjacent transparent regions disposed on opposing sides of corresponding pixel regions.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: December 20, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ki-Wan Ahn, Sang-Ho Park, Yong-Jae Jang
  • Patent number: 9450211
    Abstract: A method of manufacturing an organic light-emitting display device is provided. The method includes forming a pixel electrode, forming a hydrophobic material layer on the pixel electrode, wherein the hydrophobic material layer includes a hydrophobic material, forming a pixel-defining layer by patterning the hydrophobic material layer, so as to expose at least a portion of the pixel electrode, and removing the hydrophobic material on the exposed portion of the pixel electrode using surface treatment.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: September 20, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ki-Wan Ahn, Jae-Hyuck Jang
  • Publication number: 20160172633
    Abstract: A display panel includes a substrate, light emitting structures disposed on an upper surface of the substrate in pixel regions, an encapsulation substrate disposed over the light emitting structures, and a light blocking member disposed on a lower surface of the substrate. The light blocking member has blocking portions corresponding to the pixel regions and openings corresponding to transparent regions.
    Type: Application
    Filed: August 5, 2015
    Publication date: June 16, 2016
    Inventors: Ki-Wan Ahn, Yong-Jae Jang
  • Publication number: 20160035809
    Abstract: An organic light emitting display device includes a substrate, a first insulating layer, a power supply electrode, a second insulating layer, a first electrode, an emission layer, and a second electrode. The substrate has a display region and a transparent region. The first insulating layer is disposed on the substrate. The power supply electrode is disposed on the first insulating layer. The second insulating layer is disposed on the power supply electrode such that an edge portion of the power supply electrode is free from overlap with the second insulating layer. The first electrode is disposed on the second insulating layer and in contact with the edge portion of the power supply electrode. The emission layer is disposed on the first electrode. The second electrode is disposed on the emission layer.
    Type: Application
    Filed: June 2, 2015
    Publication date: February 4, 2016
    Inventors: Sang-Ho PARK, Joung-Keun PARK, Ki-Wan AHN, Joo-Sun YOON, Seung-Min LEE, Yong-Jae JANG
  • Publication number: 20160027853
    Abstract: A display device includes a substrate and first, second and third thin film transistor. The first thin film transistor is disposed over the substrate, and includes a first gate electrode which has a first transmittance. The second thin film transistor is disposed over the substrate, and includes a second gate electrode which has a second transmittance substantially different from the first transmittance. The third thin film transistor is disposed over the substrate, and includes a third gate electrode which has a third transmittance substantially different from the first transmittance.
    Type: Application
    Filed: January 14, 2015
    Publication date: January 28, 2016
    Inventors: Ki-Wan Ahn, Yong-Jae Jang
  • Publication number: 20160013260
    Abstract: An organic light emitting display device includes a substrate including a plurality of pixel regions and a plurality of transparent regions, thin film transistors disposed in the pixel regions, an insulation layer disposed on the thin film transistors, first electrodes electrically contacting the thin film transistors, a pixel defining layer including a black material disposed on the first electrodes, organic light emitting structures disposed on the pixel defining layer, and a second electrode disposed on the organic light emitting structures. The pixel defining layer may define an asymmetrical configuration of adjacent transparent regions disposed on opposing sides of corresponding pixel regions.
    Type: Application
    Filed: December 4, 2014
    Publication date: January 14, 2016
    Inventors: Ki-Wan AHN, Sang-Ho PARK, Yong-Jae JANG
  • Publication number: 20150364530
    Abstract: An organic light-emitting diode (OLED) display is disclosed. In one aspect, the display includes a substrate and a plurality of pixels formed over the substrate. Each of the pixels comprises a first region configured to emit light and a second region configured to pass external light therethrough. The second regions of at least three adjacent ones of the pixels have different areas.
    Type: Application
    Filed: October 28, 2014
    Publication date: December 17, 2015
    Inventors: Joo-Sun Yoon, Ki-Wan Ahn
  • Patent number: 9202896
    Abstract: A method of manufacturing a thin film transistor (TFT), including forming an oxide semiconductor pattern including a first region, a second region and a third region on a substrate, directly plasma processing the first region and the second region of the oxide semiconductor pattern, forming an insulating layer on the substrate to cover the oxide semiconductor pattern, forming a gate electrode on the insulating layer to overlap the third region, and forming a source electrode and a drain electrode that are insulated from the gate electrode and that contact the first region, the second region being disposed between the first region and the third region.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: December 1, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo-Sun Yoon, Ki-Wan Ahn, Joung-Keun Park