Patents by Inventor Keun-Kyu Song

Keun-Kyu Song 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: 11456439
    Abstract: A light emitting element and a display device including the same are provided. The light emitting element includes a first semiconductor layer, a second semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer, a protective layer surrounding an outer surface of at least one of the first semiconductor layer, the second semiconductor layer, and the active layer, and an insulating layer surrounding an outer surface of the protective layer. A surface of at least one of the first semiconductor layer, the second semiconductor layer, and the active layer includes a first lattice point, wherein the protective layer includes a first atom and a second atom, and wherein the first atom of the protective layer is at the first lattice point.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: September 27, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yun Hyuk Ko, Chang Hee Lee, Jin Oh Kwag, Keun Kyu Song, Yun Ku Jung, Sung-Chan Jo, Jae Kook Ha
  • Publication number: 20220254753
    Abstract: A dipole alignment device includes an electric field forming part including a stage, and a probe part which form an electric field on the stage; an inkjet printing apparatus including at least one inkjet head which sprays ink including dipoles and a solvent with the dipoles dispersed therein onto the stage; a transportation part comprising a first moving part which moves the electric field forming part in at least one direction; and a light irradiation apparatus including a light irradiation part which applies light to the ink sprayed onto the stage.
    Type: Application
    Filed: June 3, 2020
    Publication date: August 11, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Won Ho LEE, Hyun Deok IM, Jong Hyuk KANG, Jin Oh KWAG, Keun Kyu SONG, Sung Chan JO, Hyun Min CHO
  • Patent number: 11411044
    Abstract: A display device comprises a first electrode, a second electrode disposed to be spaced apart from the first electrode and face the first electrode, a first insulating layer disposed to cover the first electrode and the second electrode, a second insulating layer disposed on at least a part of the first insulating layer and exposing at a part of a region where the first electrode and the second electrode overlaps the first insulating layer and at least one light emitting element on the exposed first insulating layer between the first electrode and the second electrode, wherein the second insulating layer includes at least one opening exposing the first insulating layer and disposed to be spaced apart from each other on a region where the first electrode and the second electrode face each other, and a bridge portion between the openings, and the light emitting element is disposed on the opening.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: August 9, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Min Cho, Dae Hyun Kim, Jin Oh Kwag, Dong Hyun Kim, Keun Kyu Song, Hyun Deok Im, Sung Chan Jo
  • Patent number: 11403997
    Abstract: A pixel includes first and second sub-emission areas enclosed by a bank; a first light source unit disposed in the first sub-emission area, and including at least one first light emitting element connected between at least one first split electrode and a second power supply; a second light source unit disposed in the second sub-emission area, and including at least one second light emitting element connected between at least one second split electrode and the second power supply; a first driving circuit connected between a first power supply and the at least one first split electrode, and supplying a first driving current to the first light source unit in response to a first data signal; and a second driving circuit connected between the first power supply and the second split electrode, and supplying a second driving current to the second light source unit in response to a second data signal.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: August 2, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jin Oh Kwag, Won Sik Oh, Keun Kyu Song, Sung-Chan Jo, Hyun Min Cho
  • Publication number: 20220204796
    Abstract: A method for manufacturing a display device comprises the steps of: spraying, on a target substrate having a first electrode and a second electrode formed thereon, an element ink comprising a first element solvent and light-emitting elements dispersed in the first element solvent; forming a second element solvent in which at least some bonds of the first element solvent are decomposed by irradiating light to the first element solvent and mounting the light-emitting elements on the first electrode and the second electrode; and removing the second element solvent.
    Type: Application
    Filed: March 3, 2020
    Publication date: June 30, 2022
    Inventors: Jae Hoon JUNG, Hee Yeon YOO, Hye Jung HONG, Hyo Jin KO, Duk Ki KIM, Jun Bo SIM, Sung Chan JO, Jong Hyuk KANG, Keun Kyu SONG, Hyun Min CHO
  • Patent number: 11373587
    Abstract: A pixel includes first and second sub-emission areas enclosed by a bank; a first light source unit disposed in the first sub-emission area, and including at least one first light emitting element connected between at least one first split electrode and a second power supply; a second light source unit disposed in the second sub-emission area, and including at least one second light emitting element connected between at least one second split electrode and the second power supply; a first driving circuit connected between a first power supply and the at least one first split electrode, and supplying a first driving current to the first light source unit in response to a first data signal; and a second driving circuit connected between the first power supply and the second split electrode, and supplying a second driving current to the second light source unit in response to a second data signal.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: June 28, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jin Oh Kwag, Won Sik Oh, Keun Kyu Song, Sung-Chan Jo, Hyun Min Cho
  • Patent number: 11367823
    Abstract: A light emitting device may include: a substrate including a plurality of unit light emitting regions; and first to fourth insulating layers sequentially on the substrate. Each of the unit light emitting regions may include: at least one light emitting element on the first insulating layer, the at least one light emitting element including a first end portion and a second end portion in a length direction thereof; first and second banks on the substrate; a first electrode on the first bank and a second electrode on the second bank; a first contact electrode on the first electrode; a second contact electrode on the second electrode; and a conductive pattern provided between the first insulating layer and the first contact electrode, the conductive pattern surrounding the first and second electrodes when viewed on a plane.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: June 21, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dae Hyun Kim, Hyun Min Cho, Hyun Deok Im, Jong Hyuk Kang, Keun Kyu Song, Joo Yeol Lee, Bek Hyun Lim, Sung-Chan Jo
  • Publication number: 20220115470
    Abstract: A display device may include: a base layer including a display area and a non-display area; and a plurality of pixels provided on the display area, and each including a plurality of sub-pixels. Each of the sub-pixels may include a pixel circuit layer, and a display element layer including an emission area formed to emit light, and a non-emission area provided around a perimeter of the emission area. The display element layer may include: a partition wall provided on the emission area of each of the sub-pixels; a bank provided on the non-emission area of each sub-pixel, and disposed on a surface equal to a surface on which the partition wall is disposed; a first electrode and a second electrode provided on the partition wall and spaced apart from each other; and at least one light emitting element provided between the first and second electrodes in the emission area of each sub-pixel, and configured to emit the light.
    Type: Application
    Filed: March 21, 2019
    Publication date: April 14, 2022
    Inventors: Dae Hyun KIM, Veidhes BASRUR, Xinxing LI, Tae Jin KONG, Hee Keun LEE, Hyun Min CHO, Keun Kyu SONG, Jin Oh KWAG
  • Publication number: 20220093828
    Abstract: A display device is provided. The display device comprises: a first electrode and a second electrode spaced apart from and arranged to face the first electrode; a first insulating layer arranged to cover at least a partial region of the first and second electrodes; a shielding electrode layer which is arranged on the first insulating layer and which does not overlap at least a portion of the first and second electrodes; and at least one light-emitting element arranged between the first and second electrodes so as to be spaced apart from the shielding electrode layer, wherein the at least one light-emitting element can be arranged in a region in which the shielding electrode layer does not overlap the first and second electrodes.
    Type: Application
    Filed: August 23, 2019
    Publication date: March 24, 2022
    Inventors: Jin Oh KWAG, Hyun Deok IM, Keun Kyu SONG, Sung Chan JO, Hyun Min CHO
  • Publication number: 20220085097
    Abstract: A light-emitting diode includes a first semiconductor region having a first conductive type; a second semiconductor region having a second conductive type; and an active layer disposed between the first semiconductor region and the second semiconductor region and including phosphorus (P). The light-emitting diode has a rod shape, the second semiconductor region includes a first semiconductor layer, a second semiconductor layer, and a third semiconductor layer, which are sequentially stacked, the first semiconductor layer is disposed between the active layer and the second semiconductor layer, and the second semiconductor layer includes a compound represented by AlGaInP and satisfying Equation 1.
    Type: Application
    Filed: December 5, 2019
    Publication date: March 17, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Keun Kyu SONG, Jung Hong MIN, Dae Hyun KIM, Dong Uk KIM, Hyun Min CHO
  • Publication number: 20220052108
    Abstract: A display device and a method of manufacturing the same are provided. A display device includes: a substrate including a plurality of pixels; a first electrode and a second electrode spaced apart from each other on the substrate; a light emitting element located between the first electrode and the second electrode; and a conductive pattern on the light emitting element. The light emitting element includes a first semiconductor layer, a second semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer, and the conductive pattern overlaps the active layer and does not overlap the first semiconductor layer or the second semiconductor layer.
    Type: Application
    Filed: July 12, 2021
    Publication date: February 17, 2022
    Inventors: Mi Jin PARK, Jin Sun KIM, Jin Yeong KIM, Sang Ho PARK, Keun Kyu SONG, Woo Guen JANG
  • Publication number: 20220037299
    Abstract: A display device and a method of manufacturing the same are provided. The display device comprises a first area which extends in a first direction, a second area which extends in the first direction and is alongside the first area in a second direction intersecting the first direction, at least one first light emitting element in the first area, at least one second light emitting element in the second area, at least one first wiring coupled to an end of the first light emitting element in the first area and that extends in the first direction and at least one second wiring coupled to an end of the second light emitting element in the second area and that extends in the first direction, wherein the first wiring and the second wiring are electrically isolated from each other.
    Type: Application
    Filed: May 29, 2019
    Publication date: February 3, 2022
    Inventors: Won Ho LEE, Yo Han LEE, Jong Hyuk KANG, Jin Oh KWAG, Hyun Deok IM, Hyun Min CHO, Won Kyu KIM, Keun Kyu SONG
  • Publication number: 20220037568
    Abstract: A display device includes a first electrode and a second electrode that are spaced apart from and facing each other; a light-blocking layer disposed above the first electrode and the second electrode; and at least one light-emitting element disposed between the first electrode and the second electrode. The light-blocking layer includes a light-blocking portion absorbing light and an opening pattern. The light-blocking portion includes an area partially overlapping the first electrode and the second electrode. The at least one opening pattern exposes portions of the first and second electrodes facing each other and at least a portion of an area between the first and second electrodes facing each other. The at least one light-emitting element overlaps the at least one opening pattern.
    Type: Application
    Filed: August 23, 2019
    Publication date: February 3, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Jin Oh KWAG, Dae Hyun KIM, Keun Kyu SONG, Sung Chan JO, Hyun Min CHO
  • Publication number: 20220029058
    Abstract: A display device may include: a substrate including a display area and a non-display area; and pixels in the display area, and each including sub-pixels. Each sub-pixel may include a pixel circuit layer, and a display element layer including at least one light emitting element. The display element layer may include: a first electrode on the pixel circuit layer; a second electrode on the first electrode and electrically insulated from the first electrode; the light emitting element including a first end portion coupled to the first electrode and a second end portion coupled to the second electrode, and between the first electrode and the second electrode; an intermediate layer enclosing at least one area of the light emitting element, and on the first electrode; a connection line electrically connected to the second electrode. The second electrode may be on the intermediate layer.
    Type: Application
    Filed: May 30, 2019
    Publication date: January 27, 2022
    Inventors: Dong Uk KIM, Jin Oh KWAG, Keun Kyu SONG, Sung-Chan JO, Hyun Min CHO
  • Publication number: 20210405807
    Abstract: A display device including a substrate and a plurality of pixels in a display region of the substrate. Each of the pixels includes first and second sub-pixels, and each of the first and second sub-pixels has a light emitting region for emitting light. The first sub-pixel includes a first light emitting element in the light emitting region and configured to emit visible light. The second sub-pixel includes a second light emitting element in the light emitting region and configured to emit infrared light and a light receiving element configured to receive the infrared light emitted from the second light emitting element to detect a user's touch. The second light emitting element and the light receiving element in the second sub-pixel are electrically insulated from and optically coupled to each other to form a photo-coupler.
    Type: Application
    Filed: September 13, 2021
    Publication date: December 30, 2021
    Inventors: Hyun Min CHO, Dae Hyun KIM, Sung Chul KIM, Hye Yong CHU, Keun Kyu SONG
  • Patent number: 11194413
    Abstract: A display device for a vehicle includes a stretchable display panel and a touch sensor on a first surface of the stretchable display panel and configured to sense a user's touch. The stretchable display panel includes a plurality of pixels and has a button display area and a display area adjacent the button display area. The stretchable display panel is integrally arranged on a center fascia of the vehicle that as a plurality of curved surfaces, and a step is defined between the button display area and the adjacent display area.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: December 7, 2021
    Assignees: Samsung Display Co., Ltd., Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Jong Ho Hong, Da Young Ju, Keun Kyu Song, Jae Min Shin, Young Hoon Oh, Joon Hak Oh, Ji Min Ryu, So Yon Jeong, Hye Jin Joo, Ju Yeong Kwon
  • Publication number: 20210375194
    Abstract: A pixel includes first and second sub-emission areas enclosed by a bank; a first light source unit disposed in the first sub-emission area, and including at least one first light emitting element connected between at least one first split electrode and a second power supply; a second light source unit disposed in the second sub-emission area, and including at least one second light emitting element connected between at least one second split electrode and the second power supply; a first driving circuit connected between a first power supply and the at least one first split electrode, and supplying a first driving current to the first light source unit in response to a first data signal; and a second driving circuit connected between the first power supply and the second split electrode, and supplying a second driving current to the second light source unit in response to a second data signal.
    Type: Application
    Filed: April 11, 2019
    Publication date: December 2, 2021
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jin Oh KWAG, Won Sik OH, Keun Kyu SONG, Sung-Chan JO, Hyun Min CHO
  • Publication number: 20210351171
    Abstract: A display device may include: a substrate including a display area and a non-display area; and pixels disposed on the display area, and each including sub-pixels, each sub-pixel including a pixel circuit layer, and a display element layer including a light emitting element. The display element layer includes first and second electrodes spaced apart from each other; a first insulating layer disposed between the pixel circuit layer and the light emitting element; and a second insulating layer disposed on the light emitting element and filling spaces between the first insulating layer and ends of the light emitting element. The light emitting element includes a first conductive semiconductor layer, an active layer enclosing at least one side of the first conductive semiconductor layer, a second conductive semiconductor layer enclosing the active layer, an electrode layer enclosing the second conductive semiconductor layer, and an insulating film covering the electrode layer.
    Type: Application
    Filed: March 21, 2019
    Publication date: November 11, 2021
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Je Won YOO, Dae Hyun KIM, Bek Hyun LIM, Myeong Hee KIM, Chang Il TAE, Hyun Min CHO, Keun Kyu SONG, Jin Oh KWAG
  • Publication number: 20210350746
    Abstract: A display device includes: a substrate; a display element layer on one surface of the substrate and including at least one light emitting element emitting light; and a pixel circuit portion on the display element layer and including at least one transistor electrically connected to the light emitting element, wherein the display element layer includes: a first electrode on the substrate and electrically connected to one end of the light emitting element; a second electrode on the substrate and electrically connected to the other end of the light emitting element; and an insulation layer on the substrate including the second electrode, and having a first opening exposing a portion of the second electrode, and wherein the second electrode is electrically connected to the transistor through the first opening.
    Type: Application
    Filed: July 23, 2021
    Publication date: November 11, 2021
    Inventors: Hyun Min CHO, Sung Chul KIM, Dae Hyun KIM, Hye Yong CHU, Jong Hyuk KANG, Keun Kyu SONG, Joo Yeol LEE, Bek Hyun LIM, Hyun Deok IM
  • Publication number: 20210343784
    Abstract: A display device comprises a substrate including a display area and a non-display area, and pixels disposed in the display area, each of the pixels including sub-pixels. Each of sub-pixels includes a pixel circuit layer, and a display element layer including at least one light emitting element. The display element layer includes first and second electrodes spaced apart from each other, the light emitting element disposed between the first electrode and second electrode, a first contact electrode that electrically connects an end of the light emitting element to the first electrode, and a second contact electrode that electrically connects another end of the light emitting element to the second electrode. Each of sub-pixels includes a first area in which the pixel circuit layer is disposed, and a second area adjacent to the first area. The second area includes a transmission area through which the light passes.
    Type: Application
    Filed: April 15, 2019
    Publication date: November 4, 2021
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jin Oh KWAG, Jong Hyuk KANG, Keun Kyu SONG, Sung-Chan JO, Hyun Min CHO