Patents by Inventor Jong-in Choung

Jong-in Choung 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: 20250147425
    Abstract: Provided is a stripper composition and a method for forming a pattern using the same. The stripper composition includes, in set content ranges, an amine compound, a glycol compound, an aprotic polar solvent excluding N-methyl-2-pyrrolidone and N-methylformamide, and a first corrosion inhibitor represented by Formula 1. The stripper composition according to an embodiment may be used in a process of removing a photoresist pattern formed on a lower film, and may supply characteristics of an excellent stripping power for photoresist and prevention or reduction of damage of the lower film.
    Type: Application
    Filed: October 31, 2024
    Publication date: May 8, 2025
    Inventors: KYU-SOON PARK, YOUNGROK KIM, JONG-HYUN CHOUNG, WOOJIN CHO, Sehoon KIM, Jongmo PARK, Joonsik YOON, Jangwoo CHO
  • Patent number: 12274093
    Abstract: A display device includes conductive layers including wires and conductive patterns in a display area and a pad area, a via layer on the conductive layers, a first electrode and a second electrode on the via layer in the display area and spaced apart from each other, a first insulating layer on the first electrode and the second electrode, light emitting elements on the first electrode and the second electrode spaced apart from each other on the first insulating layer, and a first connection electrode on the first electrode and electrically contacting the light emitting elements, and a second connection electrode on the second electrode and electrically contacting the light emitting elements, each of the conductive layers includes a first metal layer and a second metal layer on the first metal layer, and the second metal layer contains copper and has a grain size of about 155 nm or less.
    Type: Grant
    Filed: February 15, 2022
    Date of Patent: April 8, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Joon Yong Park, Gyung Min Baek, Shin Il Choi, Do Keun Song, Young Rok Kim, Jong Hyun Choung
  • Publication number: 20250060675
    Abstract: A photoresist stripper composition according to one or more embodiments includes an amine compound, a cyclic alcohol, a protic polar organic solvent, an aprotic polar organic solvent, and a polyhydric alcohol having 4 to 6 carbon atoms. The amine compound in the photoresist stripper composition may have a molecular weight of about 80 g/mol or less, and a HSPo value according to Equation 1 of about 27 to about 32. The photoresist stripper composition according to one or more embodiments may be utilized in a process of removing a photoresist pattern formed on a lower film, and may supply an excellent or suitable strip ability for photoresist and characteristics of preventing or reducing damage of the lower film.
    Type: Application
    Filed: August 15, 2024
    Publication date: February 20, 2025
    Inventors: KYU-SOON PARK, YOUNGROK KIM, Seonjeong KIM, Hyerim YANG, Jongsoon LEE, Byeongwoo JEON, JONG-HYUN CHOUNG, WOOJIN CHO
  • Patent number: 12041830
    Abstract: A method of fabricating a conductive pattern includes forming a conductive metal material layer and a conductive capping material layer on a substrate, forming a photoresist pattern as an etching mask on the conductive capping material layer, forming a first conductive capping pattern by etching the conductive capping material layer with a first etchant, forming a conductive metal layer and a second conductive capping pattern by etching the conductive metal material layer and the first conductive capping pattern with a second etchant, and forming a conductive capping layer by etching the second conductive capping pattern with a third etchant. The second conductive capping pattern includes a first region overlapping the conductive metal layer and a second region not overlapping the conductive metal layer, and the forming of the conductive capping layer includes etching the second region of the second conductive capping pattern to form the conductive capping layer.
    Type: Grant
    Filed: December 19, 2022
    Date of Patent: July 16, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae Uoon Kim, Hong Sick Park, Jong Hyun Choung
  • Publication number: 20240224605
    Abstract: A display device includes first and second emitting layers of first and second organic layers, on first and second pixel electrodes, in first and second emission areas, respectively, a first bank layer defining the first and second emission areas, a second bank layer on the first bank layer and defining protruding tips, a first pattern of the first organic layer which is on the second bank layer, an inorganic layer on the first emitting layer and the first pattern, a metal pattern on the inorganic layer to surround the second emission area, and a second pattern of the second organic layer which is on the metal pattern to surround the second emission area. The second pattern and the metal pattern form an undercut structure.
    Type: Application
    Filed: September 18, 2023
    Publication date: July 4, 2024
    Inventors: Young Rok KIM, Kyu Soon PARK, Jong Hyun CHOUNG
  • Publication number: 20240196660
    Abstract: A display panel includes a pixel defining layer including first and second light-emitting openings, a conductive partition disposed on the pixel defining layer and including first and second partition openings and respectively corresponding to the first and second light-emitting openings, a first light-emitting element disposed in the first partition opening, a second light-emitting element disposed in the second partition opening, and a conductive pattern disposed on the conductive partition. The first light-emitting element includes a first anode, a first organic layer, and a first cathode contacting the conductive partition, and the second light-emitting element includes a second anode, a second organic layer, and a second cathode contacting the conductive partition. A conductive pattern opening corresponding to the second light-emitting opening is included in the conductive pattern.
    Type: Application
    Filed: September 12, 2023
    Publication date: June 13, 2024
    Applicant: Samsung Display Co., Ltd.
    Inventors: YOUNGROK KIM, KYU-SOON PARK, JONG-HYUN CHOUNG
  • Publication number: 20240057409
    Abstract: A display device is disclosed that includes a substrate, a thin film transistor, a power line, a pixel electrode, an emission layer, a common electrode, and dummy electrodes. The thin film transistor is disposed on the substrate. The power line is disposed on the substrate and includes a first conductive layer and a second conductive layer having a protrusion part spaced apart from an upper surface of a first conductive layer. The pixel electrode is disposed on the substrate and is electrically connected to a thin film transistor. The emission layer is disposed on the pixel electrode. The common electrode is disposed on the emission layer and contacts the power line. The dummy electrodes are disposed on the same layer as the power line and include the same material as the pixel electrode.
    Type: Application
    Filed: March 21, 2023
    Publication date: February 15, 2024
    Inventors: YOUNGROK KIM, KYU-SOON PARK, JONG-HYUN CHOUNG
  • Publication number: 20230307487
    Abstract: A display device includes a display area and a pad area on a side of the display area, a plurality of conductive layers on a first substrate in the display area and the pad area and comprising a wiring and a conductive pattern, a via layer on the plurality of conductive layers, a plurality of electrodes on the via layer in the display area and spaced apart from each other, and a light emitting element on at least one of the plurality of electrodes. At least one of the conductive layers includes a first metal layer, a second metal layer on the first metal layer, and a third metal layer on the second metal layer. The second metal layer includes copper (Cu), the third metal layer includes a copper alloy, and a grain size of the third metal layer is smaller than a grain size of the second metal layer.
    Type: Application
    Filed: December 21, 2022
    Publication date: September 28, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Dong Min LEE, Hyun Ah SUNG, Tae Wook KANG, Young Rok KIM, Kyu Soon PARK, Joon Yong PARK, Hyun Eok SHIN, Jong Hyun CHOUNG
  • Publication number: 20230295503
    Abstract: Embodiments provide an etchant composition that includes about 5.0 to about 20.0 wt % of a persulfate, about 0.01 to about 15.0 wt % of a sulfonic acid, about 0.01 to about 2.0 wt % of a fluorine compound, about 0.01 to about 5.0 wt % of a 4-nitrogen cyclic compound, about 0.01 to about 1.0 wt % of an amino acid including a hydrophobic group having at least two carbon atoms, and water A weight ratio of the amino acid to the 4-nitrogen cyclic compound is in a range of about 1:16 to about 1:60.
    Type: Application
    Filed: March 16, 2023
    Publication date: September 21, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: YOUNGROK KIM, KYU-SOON PARK, Jong-Hyun CHOUNG, Woo Jin CHO, Gyu Po KIM, SUNG MIN KIM, Jae Myeong KIM, Hyun Cheol SHIN, JUN DONG KIM, JUN YOUNG HAWNG
  • Publication number: 20230268356
    Abstract: A method of manufacturing a display device in a chamber in which a material including yttrium is coated on an inner surface includes: forming a first layer pattern by dry etching on a substrate; depositing a second layer material on the first layer pattern; forming a photoresist pattern on the second layer material; completing a second layer pattern by using the photoresist pattern as an etch mask; and performing an additional acid etching process by using an etching solution including at least one of hydrochloric acid, sulfuric acid, or nitric acid before the forming of the photoresist pattern on the second layer material after the dry etching to form the first layer pattern.
    Type: Application
    Filed: January 18, 2023
    Publication date: August 24, 2023
    Inventors: Yong-Hwan RYU, Woo Jin CHO, Jong-Hyun CHOUNG, Jae Uoon KIM, Sun-Jin SONG, Hyun Duck CHO
  • Publication number: 20230197901
    Abstract: A display device comprises a via layer disposed on a substrate, a first electrode and a second electrode disposed on the via layer and spaced apart from each other, a first insulating layer disposed on the first electrode and the second electrode, light emitting elements disposed on the first insulating layer and disposed on the first electrode and the second electrode, a bank layer disposed on the first insulating layer and comprising a first opening in which the light emitting elements are disposed and a second opening spaced apart from the first opening, a second insulating layer disposed on the light emitting elements, and a first contact electrode and a second contact electrode disposed on the bank layer, the light emitting elements, and the second insulating layer while being spaced apart from each other.
    Type: Application
    Filed: August 5, 2022
    Publication date: June 22, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Young Rok KIM, Kyu Soon PARK, Jong Hyun CHOUNG, Woo Jin CHO
  • Patent number: 11652111
    Abstract: A display device includes a data conductive layer disposed on a substrate, a passivation layer disposed on the data conductive layer, a via layer disposed on the passivation layer, and a pixel electrode disposed on the via layer. The data conductive layer includes a data base layer, a data main metal layer disposed on the data base layer, a first data capping layer disposed on the data main metal layer, a second data capping layer disposed on the first data capping layer, and a third data capping layer disposed on the second data capping layer. The passivation layer and the via layer include a pad opening which exposes a portion of the data conductive layer in the pad area. The third data capping layer has a higher etch rate than the first and second data capping layers for a same etchant.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: May 16, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jong Hyun Choung, Jae Uoon Kim, Hyun Ah Sung
  • Publication number: 20230116992
    Abstract: A method of fabricating a conductive pattern includes forming a conductive metal material layer and a conductive capping material layer on a substrate, forming a photoresist pattern as an etching mask on the conductive capping material layer, forming a first conductive capping pattern by etching the conductive capping material layer with a first etchant, forming a conductive metal layer and a second conductive capping pattern by etching the conductive metal material layer and the first conductive capping pattern with a second etchant, and forming a conductive capping layer by etching the second conductive capping pattern with a third etchant. The second conductive capping pattern includes a first region overlapping the conductive metal layer and a second region not overlapping the conductive metal layer, and the forming of the conductive capping layer includes etching the second region of the second conductive capping pattern to form the conductive capping layer.
    Type: Application
    Filed: December 19, 2022
    Publication date: April 20, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Jae Uoon KIM, Hong Sick PARK, Jong Hyun CHOUNG
  • Patent number: 11600670
    Abstract: An input sensor of a display device includes: a sensing electrode on a base insulating layer and overlapping a sensing region; and a signal line electrically connected to the sensing electrode and overlapping the non-sensing region, and including: a first conductive layer on the base insulating layer and having a first reflectance, a first conductivity, and a first thickness; a second conductive layer having a second reflectance lower than the first reflectance, a second conductivity lower than the first conductivity, and a second thickness smaller than the first thickness, wherein the second conductive layer is on and in contact with the first conductive layer; and a third conductive layer between the base insulating layer and the first conductive layer, in contact with each of the base insulating layer and the first conductive layer, wherein the third conductive layer contains a material different from that of the second conductive layer.
    Type: Grant
    Filed: August 2, 2021
    Date of Patent: March 7, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong-Hyun Choung, Jaeuoon Kim
  • Patent number: 11594561
    Abstract: A method of manufacturing a display device in a chamber in which a material including yttrium is coated on an inner surface includes: forming a first layer pattern by dry etching on a substrate; depositing a second layer material on the first layer pattern; forming a photoresist pattern on the second layer material; completing a second layer pattern by using the photoresist pattern as an etch mask; and performing an additional acid etching process by using an etching solution including at least one of hydrochloric acid, sulfuric acid, or nitric acid before the forming of the photoresist pattern on the second layer material after the dry etching to form the first layer pattern.
    Type: Grant
    Filed: October 20, 2020
    Date of Patent: February 28, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yong-Hwan Ryu, Woo Jin Cho, Jong-Hyun Choung, Jae Uoon Kim, Sun-Jin Song, Hyun Duck Cho
  • Patent number: 11557614
    Abstract: A method of fabricating a conductive pattern includes forming a conductive metal material layer and a conductive capping material layer on a substrate, forming a photoresist pattern as an etching mask on the conductive capping material layer, forming a first conductive capping pattern by etching the conductive capping material layer with a first etchant, forming a conductive metal layer and a second conductive capping pattern by etching the conductive metal material layer and the first conductive capping pattern with a second etchant, and forming a conductive capping layer by etching the second conductive capping pattern with a third etchant. The second conductive capping pattern includes a first region overlapping the conductive metal layer and a second region not overlapping the conductive metal layer, and the forming of the conductive capping layer includes etching the second region of the second conductive capping pattern to form the conductive capping layer.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: January 17, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae Uoon Kim, Hong Sick Park, Jong Hyun Choung
  • Publication number: 20220406817
    Abstract: A display device includes conductive layers including wires and conductive patterns in a display area and a pad area, a via layer on the conductive layers, a first electrode and a second electrode on the via layer in the display area and spaced apart from each other, a first insulating layer on the first electrode and the second electrode, light emitting elements on the first electrode and the second electrode spaced apart from each other on the first insulating layer, and a first connection electrode on the first electrode and electrically contacting the light emitting elements, and a second connection electrode on the second electrode and electrically contacting the light emitting elements, each of the conductive layers includes a first metal layer and a second metal layer on the first metal layer, and the second metal layer contains copper and has a grain size of about 155 nm or less.
    Type: Application
    Filed: February 15, 2022
    Publication date: December 22, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Joon Yong PARK, Gyung Min BAEK, Shin Il CHOI, Do Keun SONG, Young Rok KIM, Jong Hyun CHOUNG
  • Publication number: 20220178016
    Abstract: A deposition apparatus includes a chamber, a deposition source disposed in the chamber, a mask assembly, and a base substrate disposed on the mask assembly. The mask assembly includes a frame including frame openings, a mask disposed on the frame and including deposition holes, and a welding stick disposed on the mask. A welding groove is disposed along an edge of the frame and has a depth in the thickness direction of the frame. The welding stick overlaps the welding groove.
    Type: Application
    Filed: September 17, 2021
    Publication date: June 9, 2022
    Applicant: Samsung Display Co., Ltd.
    Inventors: JI-HEE SON, YOUNGMIN MOON, JAEUOON KIM, SEUNGYONG SONG, SUNGSOON IM, JONG-HYUN CHOUNG, HYUNMIN CHO
  • Publication number: 20220157856
    Abstract: A display device includes a data conductive layer disposed on a substrate, a passivation layer disposed on the data conductive layer, a via layer disposed on the passivation layer, and a pixel electrode disposed on the via layer. The data conductive layer includes a data base layer, a data main metal layer disposed on the data base layer, a first data capping layer disposed on the data main metal layer, a second data capping layer disposed on the first data capping layer, and a third data capping layer disposed on the second data capping layer. The passivation layer and the via layer include a pad opening which exposes a portion of the data conductive layer in the pad area. The third data capping layer has a higher etch rate than the first and second data capping layers for a same etchant.
    Type: Application
    Filed: August 31, 2021
    Publication date: May 19, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Jong Hyun CHOUNG, Jae Uoon KIM, Hyun Ah SUNG
  • Publication number: 20220123055
    Abstract: An input sensor of a display device includes: a sensing electrode on a base insulating layer and overlapping a sensing region; and a signal line electrically connected to the sensing electrode and overlapping the non-sensing region, and including: a first conductive layer on the base insulating layer and having a first reflectance, a first conductivity, and a first thickness; a second conductive layer having a second reflectance lower than the first reflectance, a second conductivity lower than the first conductivity, and a second thickness smaller than the first thickness, wherein the second conductive layer is on and in contact with the first conductive layer; and a third conductive layer between the base insulating layer and the first conductive layer, in contact with each of the base insulating layer and the first conductive layer, wherein the third conductive layer contains a material different from that of the second conductive layer.
    Type: Application
    Filed: August 2, 2021
    Publication date: April 21, 2022
    Inventors: Jong-Hyun CHOUNG, Jaeuoon KIM