Patents by Inventor Dae Won CHOI

Dae Won 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).

  • Publication number: 20260143923
    Abstract: A display panel includes: a plurality of first electrodes disposed on a via-layer and corresponding to a plurality of pixel areas, respectively; a pixel-defining layer disposed on the via-layer; first opening parts corresponding to central portions of the first electrodes and penetrating through the pixel-defining layer; electrode undercuts corresponding to edges of the first opening parts and provided as gaps between the first electrodes and the pixel-defining layer; a plurality of second opening parts corresponding to peripheries of the first electrodes, respectively, and penetrating through the pixel-defining layer; and via-grooves corresponding to the second opening parts and defined on an upper surface of the via-layer; via-undercuts provided by the pixel-defining layer around the second opening parts and the via-layer around the via-grooves.
    Type: Application
    Filed: January 7, 2026
    Publication date: May 21, 2026
    Inventors: Dae Won CHOI, Sang Gab KIM, Su Bin BAE, Yun Jong YEO, Da Woon JUNG, Yu Gwang JEONG
  • Patent number: 12550535
    Abstract: A display panel includes: a plurality of first electrodes disposed on a via-layer and corresponding to a plurality of pixel areas, respectively; a pixel-defining layer disposed on the via-layer; first opening parts corresponding to central portions of the first electrodes and penetrating through the pixel-defining layer; electrode undercuts corresponding to edges of the first opening parts and provided as gaps between the first electrodes and the pixel-defining layer; a plurality of second opening parts corresponding to peripheries of the first electrodes, respectively, and penetrating through the pixel-defining layer; and via-grooves corresponding to the second opening parts and defined on an upper surface of the via-layer; via-undercuts provided by the pixel-defining layer around the second opening parts and the via-layer around the via-grooves.
    Type: Grant
    Filed: August 4, 2022
    Date of Patent: February 10, 2026
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dae Won Choi, Sang Gab Kim, Su Bin Bae, Yun Jong Yeo, Da Woon Jung, Yu Gwang Jeong
  • Patent number: 12284879
    Abstract: A display device includes a first base, a pixel electrode on the first base, a pixel defining layer having an opening that at least partially exposes the pixel electrode, a light emitting layer on the pixel electrode, an auxiliary electrode on the same layer as the pixel electrode, a partition wall on the auxiliary electrode that at least partially exposes a side surface of the auxiliary electrode, an organic layer on the partition wall, and a common electrode continuously arranged on the light emitting layer and the organic layer, wherein a side surface of the partition wall has a reverse-tapered shape, and the common electrode contacts the side surface of the auxiliary electrode.
    Type: Grant
    Filed: November 11, 2022
    Date of Patent: April 22, 2025
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Min Cho, Tae Wook Kang, Tae Sung Kim, Dae Won Choi, Sang Gab Kim
  • Patent number: 12193296
    Abstract: A conductive pattern is disclosed that includes a conductive layer including aluminum, a first capping layer disposed on the conductive layer and including titanium, and a second capping layer disposed on the first capping layer and including titanium nitride. A mixed region in which the aluminum and the titanium are mixed with each other is disposed in at least portions of the conductive layer and the first capping layer.
    Type: Grant
    Filed: April 11, 2022
    Date of Patent: January 7, 2025
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Eok Shin, Do Keun Song, Dong Min Lee, Joon Yong Park, Hyun Ah Sung, Yun Jong Yeo, Dae Won Choi
  • Patent number: 12161041
    Abstract: An etching device includes a chamber; a stage disposed in the chamber and on which a target substrate is loaded; a gas distribution unit disposed to face the stage in the chamber; a plurality of plasma generation modules disposed above the chamber; a gas supply unit that supplies gas into the chamber; a gas line connecting the gas supply unit and the plurality of plasma generation modules; and a plurality of gas inlet pipes each including an end connected to the plasma generation module and another end connected to the gas distribution unit.
    Type: Grant
    Filed: May 5, 2021
    Date of Patent: December 3, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dae Soo Kim, Sang Gab Kim, Yun Jong Yeo, Ju Hee Lee, Soo Beom Jo, Dae Won Choi
  • Patent number: 12150342
    Abstract: A display device includes a display panel including a main portion, a first bent portion and a second bent portion each extending from the main portion, and a corner portion which connects the first bent portion and the second bent portion to each other and is bendable relative to the main portion. The corner portion which is bendable includes a plurality of protrusion patterns partially disconnected from each other and each bendable relative to the main portion, and each of the plurality of protrusion patterns including a display pixel.
    Type: Grant
    Filed: September 7, 2021
    Date of Patent: November 19, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dae Won Choi, Dong Won Kim, Sang Gab Kim, Sang Woo Kim, Gyu Jeong Lee, Sung Won Cho
  • Publication number: 20240188336
    Abstract: A display device includes first pixel and second electrodes spaced apart from each other on a substrate, an inorganic insulating layer on the substrate and partially covering the first pixel electrode and the second pixel electrode, residual patterns disposed between the first or second pixel electrodes and the inorganic insulating layer, a bank structure on the inorganic insulating layer with first and second openings defined therethrough to overlap the first and second pixel electrodes, first and second light emitting layers on the first and second pixel electrodes, first and second common electrodes on the first and second light emitting layers, and first and second inorganic layers on the first and second common electrodes in the first and second openings. The bank structure includes first and second bank layers including different metal materials, and the second bank layer includes tips protruding to a center of the first or second opening.
    Type: Application
    Filed: September 21, 2023
    Publication date: June 6, 2024
    Inventors: Dae Won CHOI, Yun Jong YEO, Su Bin BAE, Da Woon JUNG
  • Patent number: 11889730
    Abstract: An organic light emitting diode display including: a substrate; a TFT on the substrate; a planarization layer on the TFT; a pixel electrode on the planarization layer, wherein the pixel electrode includes upper and lower layers including a transparent conductive oxide and an intermediate layer including silver; an etch stop layer on the pixel electrode, wherein an upper surface of the pixel electrode is exposed by the etch stop layer; a partition on the etch stop layer, wherein the upper surface of the pixel electrode is exposed by the partition; an organic emission layer on the upper surface of the pixel electrode where the upper surface of the pixel electrode is exposed by the etch stop layer and the partition; and a common electrode on the organic emission layer and the partition, wherein the etch stop layer covers an edge and a side surface of the pixel electrode.
    Type: Grant
    Filed: April 29, 2022
    Date of Patent: January 30, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kyeong Su Ko, Joon Yong Park, Gyung Min Baek, Hyun Min Cho, Dae Won Choi
  • Patent number: 11740526
    Abstract: A display device includes a thin film transistor on a base substrate and a signal wiring electrically connected to the thin film transistor. The signal wiring includes a main conductive layer including copper, and a capping layer including titanium the capping layer overlapping a portion of an upper surface of the main conductive layer. The signal wiring has a taper angle in a range of about 70° to about 90°. A thickness of the capping layer is in a range of about 100 ? to about 300 ?, and a thickness of the main conductive layer is in a range of about 1,000 ? to about 20,000 ?.
    Type: Grant
    Filed: April 5, 2022
    Date of Patent: August 29, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seon-Il Kim, Sung Won Cho, Sang Gab Kim, Su Bin Bae, Yu-Gwang Jeong, Dae Won Choi
  • Publication number: 20230180537
    Abstract: A light emitting display device includes a substrate, a transistor, a first insulating layer, a second insulating layer, a pixel electrode, a conductive member, a third insulating layer, and a light emitting material layer. The transistor overlaps the substrate. The first insulating layer overlaps the transistor. The second insulating layer overlaps the first insulating layer. The pixel electrode directly contacts the second insulating layer and is electrically connected to the transistor. The conductive member directly contacts at least one of the first insulating layer and the second insulating layer. The third insulating layer overlaps the second insulating layer, includes a hole, and includes an opening. The hole exposes the pixel electrode. The opening exposes the conductive member. The light emitting material layer overlaps the pixel electrode inside the hole, overlaps the third insulating layer, and has a discontinuity inside the opening.
    Type: Application
    Filed: July 8, 2022
    Publication date: June 8, 2023
    Inventors: DAWOON JUNG, Dae Won CHOI, Su Bin BAE, Yu-Gwang JEONG
  • Publication number: 20230180526
    Abstract: A display panel includes: a plurality of first electrodes disposed on a via-layer and corresponding to a plurality of pixel areas, respectively; a pixel-defining layer disposed on the via-layer; first opening parts corresponding to central portions of the first electrodes and penetrating through the pixel-defining layer; electrode undercuts corresponding to edges of the first opening parts and provided as gaps between the first electrodes and the pixel-defining layer; a plurality of second opening parts corresponding to peripheries of the first electrodes, respectively, and penetrating through the pixel-defining layer; and via-grooves corresponding to the second opening parts and defined on an upper surface of the via-layer; via-undercuts provided by the pixel-defining layer around the second opening parts and the via-layer around the via-grooves.
    Type: Application
    Filed: August 4, 2022
    Publication date: June 8, 2023
    Inventors: Dae Won CHOI, Sang Gab KIM, Su Bin BAE, Yun Jong YEO, Da Woon JUNG, Yu Gwang JEONG
  • Publication number: 20230086407
    Abstract: A conductive pattern is disclosed that includes a conductive layer including aluminum, a first capping layer disposed on the conductive layer and including titanium, and a second capping layer disposed on the first capping layer and including titanium nitride. A mixed region in which the aluminum and the titanium are mixed with each other is disposed in at least portions of the conductive layer and the first capping layer.
    Type: Application
    Filed: April 11, 2022
    Publication date: March 23, 2023
    Inventors: Hyun Eok SHIN, Do Keun SONG, Dong Min LEE, Joon Yong PARK, Hyun Ah SUNG, Yun Jong YEO, Dae Won CHOI
  • Publication number: 20230076780
    Abstract: A display device includes a first base, a pixel electrode on the first base, a pixel defining layer having an opening that at least partially exposes the pixel electrode, a light emitting layer on the pixel electrode, an auxiliary electrode on the same layer as the pixel electrode, a partition wall on the auxiliary electrode that at least partially exposes a side surface of the auxiliary electrode, an organic layer on the partition wall, and a common electrode continuously arranged on the light emitting layer and the organic layer, wherein a side surface of the partition wall has a reverse-tapered shape, and the common electrode contacts the side surface of the auxiliary electrode.
    Type: Application
    Filed: November 11, 2022
    Publication date: March 9, 2023
    Inventors: Hyun Min CHO, Tae Wook KANG, Tae Sung KIM, Dae Won CHOI, Sang Gab KIM
  • Patent number: 11567363
    Abstract: A light control member includes a light control substrate including a surface, and a scalene prism disposed on the light control substrate. The scalene prism includes a first side surface extended at a first angle with respect to the surface of the light control substrate, and a second side surface extended at a second angle with respect to the surface of the light control substrate, the second angle being greater than the first angle. The light control member includes an etching stopper disposed on the scalene prism, and at least one absorption pattern disposed on the etching stopper on the second side surface of the scalene prism.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: January 31, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sung Won Cho, Yun Jong Yeo, Seon Il Kim, Youn Joon Kim, Dae Won Choi
  • Patent number: 11502144
    Abstract: A display device includes a first base, a pixel electrode on the first base, a pixel defining layer having an opening that at least partially exposes the pixel electrode, a light emitting layer on the pixel electrode, an auxiliary electrode on the same layer as the pixel electrode, a partition wall on the auxiliary electrode that at least partially exposes a side surface of the auxiliary electrode, an organic layer on the partition wall, and a common electrode continuously arranged on the light emitting layer and the organic layer, wherein a side surface of the partition wall has a reverse-tapered shape, and the common electrode contacts the side surface of the auxiliary electrode.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: November 15, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Min Cho, Tae Wook Kang, Tae Sung Kim, Dae Won Choi, Sang Gab Kim
  • Publication number: 20220254863
    Abstract: An organic light emitting diode display including: a substrate; a TFT on the substrate; a planarization layer on the TFT; a pixel electrode on the planarization layer, wherein the pixel electrode includes upper and lower layers including a transparent conductive oxide and an intermediate layer including silver; an etch stop layer on the pixel electrode, wherein an upper surface of the pixel electrode is exposed by the etch stop layer; a partition on the etch stop layer, wherein the upper surface of the pixel electrode is exposed by the partition; an organic emission layer on the upper surface of the pixel electrode where the upper surface of the pixel electrode is exposed by the etch stop layer and the partition; and a common electrode on the organic emission layer and the partition, wherein the etch stop layer covers an edge and a side surface of the pixel electrode.
    Type: Application
    Filed: April 29, 2022
    Publication date: August 11, 2022
    Inventors: Kyeong Su KO, Joon Yong Park, Gyung Min Baek, Hyun Min Cho, Dae Won Choi
  • Publication number: 20220229322
    Abstract: A display device includes a thin film transistor on a base substrate and a signal wiring electrically connected to the thin film transistor. The signal wiring includes a main conductive layer including copper, and a capping layer including titanium the capping layer overlapping a portion of an upper surface of the main conductive layer. The signal wiring has a taper angle in a range of about 70° to about 90°. A thickness of the capping layer is in a range of about 100 ? to about 300 ?, and a thickness of the main conductive layer is in a range of about 1,000 ? to about 20,000 ?.
    Type: Application
    Filed: April 5, 2022
    Publication date: July 21, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Seon-Il KIM, Sung Won CHO, Sang Gab KIM, Su Bin BAE, Yu-Gwang JEONG, Dae Won CHOI
  • Patent number: 11380753
    Abstract: A display device includes a base substrate; an organic layer disposed on the base substrate; and a first conductive layer disposed on the organic layer, wherein the first conductive layer includes a plurality of stacked films, the plurality of stacked films include a first conductive film disposed directly on the organic layer and a second conductive film disposed on the first conductive film, and the first conductive film has an oxygen concentration higher than an oxygen concentration of the second conductive film.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: July 5, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sang Gab Kim, Tae Sung Kim, Joon Geol Lee, Hyun Min Cho, Dae Won Choi, Yun Jong Yeo
  • Publication number: 20220165805
    Abstract: A display device includes a display panel including a main portion, a first bent portion and a second bent portion each extending from the main portion, and a corner portion which connects the first bent portion and the second bent portion to each other and is bendable relative to the main portion.
    Type: Application
    Filed: September 7, 2021
    Publication date: May 26, 2022
    Inventors: Dae Won CHOI, Dong Won KIM, Sang Gab KIM, Sang Woo KIM, Gyu Jeong LEE, Sung Won CHO
  • Patent number: 11342404
    Abstract: An organic light emitting diode display including: a substrate; a TFT on the substrate; a planarization layer on the TFT; a pixel electrode on the planarization layer, wherein the pixel electrode includes upper and lower layers including a transparent conductive oxide and an intermediate layer including silver; an etch stop layer on the pixel electrode, wherein an upper surface of the pixel electrode is exposed by the etch stop layer; a partition on the etch stop layer, wherein the upper surface of the pixel electrode is exposed by the partition; an organic emission layer on the upper surface of the pixel electrode where the upper surface of the pixel electrode is exposed by the etch stop layer and the partition; and a common electrode on the organic emission layer and the partition, wherein the etch stop layer covers an edge and a side surface of the pixel electrode.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: May 24, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kyeong Su Ko, Joon Yong Park, Gyung Min Baek, Hyun Min Cho, Dae Won Choi