Patents by Inventor Buem Joon Kim

Buem Joon Kim 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: 11949044
    Abstract: A display device and a method of manufacturing the same are provided. The display device includes a first alignment electrode and a second alignment electrode spaced apart from each other, a light emitting element between the first alignment electrode and the second alignment electrode, a first auxiliary electrode at a first side of the light emitting element in a plan view, and separated from the first alignment electrode, and a second auxiliary electrode at a second side of the light emitting element in a plan view, and separated from the second alignment electrode, wherein an alignment signal is configured to be applied to the first alignment electrode, and wherein a first auxiliary signal of a phase that is different from a phase of the alignment signal is configured to be applied to the first auxiliary electrode.
    Type: Grant
    Filed: October 5, 2021
    Date of Patent: April 2, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Buem Joon Kim, Hyun Deok Im
  • Patent number: 11881538
    Abstract: An apparatus for manufacturing a display device, comprising a stage, a first electric-field-applying module on a first side of the stage, and including first probe pins, a first light-irradiating module above the stage, and configured to irradiate light to the stage, a first light emission driver configured to transmit a first emission driving signal to the first light-irradiating module, and a signal output unit configured to output a first emission timing signal for setting light irradiation timing of the first light-irradiating module to the first light emission driver, to output a first alignment signal to any one of the first probe pins, and to output a second alignment signal to another one of the first probe pins, wherein the first emission timing signal and the second alignment signal are alternating current (AC) signals, and wherein periods of the first emission timing signal and the second alignment signal are the same.
    Type: Grant
    Filed: November 4, 2021
    Date of Patent: January 23, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Cheol Ku Kang, Buem Joon Kim, Won Kyu Kim
  • Publication number: 20230386878
    Abstract: An apparatus for aligning dipoles is provided. The apparatus includes: an electric field forming unit including a stage and a probe unit, the probe unit being configured to form an electric field on the stage; an inkjet printing device including an inkjet head, the inkjet head being configured to spray ink including a solvent and dipoles dispersed in the solvent onto the stage; a light irradiation device configured to irradiate light onto the stage; and a temperature control device including a temperature control unit, the temperature control unit being configured to control a temperature of the solvent sprayed on the stage.
    Type: Application
    Filed: August 11, 2023
    Publication date: November 30, 2023
    Inventors: Won Ho LEE, Buem Joon KIM, Jong Hyuk KANG, Hyun Deok IM, Chung Sic CHOI
  • Patent number: 11728196
    Abstract: An apparatus for aligning dipoles is provided. The apparatus includes: an electric field forming unit including a stage and a probe unit, the probe unit being configured to form an electric field on the stage; an inkjet printing device including an inkjet head, the inkjet head being configured to spray ink including a solvent and dipoles dispersed in the solvent onto the stage; a light irradiation device configured to irradiate light onto the stage; and a temperature control device including a temperature control unit, the temperature control unit being configured to control a temperature of the solvent sprayed on the stage.
    Type: Grant
    Filed: March 3, 2021
    Date of Patent: August 15, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Won Ho Lee, Buem Joon Kim, Jong Hyuk Kang, Hyun Deok Im, Chung Sic Choi
  • Publication number: 20230231074
    Abstract: A display device may include including a first insulating reflective layer including a distributed Bragg reflector above a substrate, a first electrode and a second electrode above the first insulating reflective layer, a second insulating reflective layer including a distributed Bragg reflector above the first electrode and the second electrode, and a light emitting element above the second insulating reflective layer.
    Type: Application
    Filed: August 18, 2022
    Publication date: July 20, 2023
    Inventors: Won Ho LEE, Jong Hyuk KANG, Buem Joon KIM, Soo Jo OCK, Hyun Deok IM
  • Publication number: 20230102417
    Abstract: A light emitting element ink includes a light emitting element solvent, and a light emitting element dispersed in the light-emitting diode solvent. The light emitting element includes semiconductor layers and an insulating film surrounding the outer surface of the semiconductor layers, wherein the light-emitting diode solvent is an organic solvent having a pKa value in a range of about 7 to about 15.
    Type: Application
    Filed: January 14, 2021
    Publication date: March 30, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Jae Hoon JUNG, Buem Joon KIM, Hee Yeon YOO, Sung Chan JO, Eun A CHO, Hye Jung HONG, Jong Hyuk KANG, Keun Kyu SONG, Hyun Deok IM, Hyun Min CHO
  • Publication number: 20220415962
    Abstract: A display device includes a substrate including a pixel area, and a pixel disposed in the pixel area and including an emission area and a non-emission area. The pixel includes a first alignment electrode and a second alignment electrode spaced from each other on the substrate, an insulating layer disposed on the first and second alignment electrodes, at least one light emitting element disposed on the insulating layer between the first alignment electrode and the second alignment electrode in the emission area, a pattern disposed between the at least one light emitting element and the insulating layer and including a hydrophilic group, and a bank disposed on the insulating layer in the non-emission area and including a first opening corresponding to the emission area and a second opening spaced from the first opening of the bank.
    Type: Application
    Filed: February 22, 2022
    Publication date: December 29, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Won Ho LEE, Buem Joon KIM, Jong Hyuk KANG, Hyun Deok IM
  • Publication number: 20220415965
    Abstract: A display device includes: a first sub-pixel having a first emission area and a first sub-area adjacent to each other in a first direction; and a bank extending around a portion of the first emission area and the first sub-area. The bank includes: a first wall extending around the first sub-area; and a second wall adjacent to the first emission area in a second direction crossing the first direction. The second wall and the first wall are spaced apart from each other in the first direction.
    Type: Application
    Filed: May 18, 2022
    Publication date: December 29, 2022
    Inventors: Hyun Deok IM, Buem Joon KIM, Won Ho LEE, Hae Yun CHOI
  • Publication number: 20220328558
    Abstract: A light emitting element includes a core structure, which includes a first light emitting element core, a second light emitting element core spaced apart from the first light emitting element core, and a first bonding layer between the first light emitting element core and the second light emitting element core, each of the first light emitting element core and the second light emitting element core includes a first semiconductor layer, a second semiconductor layer spaced apart from the first semiconductor layer, and an element active layer between the first semiconductor layer and the second semiconductor layer, and a stacking direction of the first semiconductor layer, the element active layer, and the second semiconductor layer of the first light emitting element core is opposite to a stacking direction of the first semiconductor layer, the element active layer and the second semiconductor layer of the second light emitting element core.
    Type: Application
    Filed: November 9, 2021
    Publication date: October 13, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Buem Joon KIM, Jong Hyuk KANG, Won Ho LEE, Hyun Deok IM, Eun A CHO
  • Publication number: 20220262846
    Abstract: A display device in accordance with some embodiments may include a base layer, a first bank pattern and a second bank pattern on the base layer, and spaced apart from each other in a first direction, a first electrode overlapping the first bank pattern, a second electrode overlapping the second bank pattern, and a light emitting element aligned between the first electrode and the second electrode, wherein a distance between an end of the first electrode and an end of the first bank pattern differs from a distance between an end of the second electrode and an end of the second bank pattern in the first direction.
    Type: Application
    Filed: November 8, 2021
    Publication date: August 18, 2022
    Inventors: Won Ho LEE, Jong Hyuk KANG, Buem Joon KIM, Hyun Deok IM, Eun A CHO
  • Publication number: 20220254958
    Abstract: A display device and a method of manufacturing the same are provided. The display device includes a first alignment electrode and a second alignment electrode spaced apart from each other, a light emitting element between the first alignment electrode and the second alignment electrode, a first auxiliary electrode at a first side of the light emitting element in a plan view, and separated from the first alignment electrode, and a second auxiliary electrode at a second side of the light emitting element in a plan view, and separated from the second alignment electrode, wherein an alignment signal is configured to be applied to the first alignment electrode, and wherein a first auxiliary signal of a phase that is different from a phase of the alignment signal is configured to be applied to the first auxiliary electrode.
    Type: Application
    Filed: October 5, 2021
    Publication date: August 11, 2022
    Inventors: Buem Joon Kim, Hyun Deok Im
  • Publication number: 20220223562
    Abstract: An ink leveling device includes a stage on which a target substrate is disposed, base frames disposed at sides of the stage, moving members coupled to the base frames and movable upward and downward, and at least one plate coupled to the moving members and disposed to press the target substrate. Light-emitting element ink is disposed on the target substrate.
    Type: Application
    Filed: December 8, 2021
    Publication date: July 14, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Jung Hyun AHN, Buem Joon KIM, Won Ho LEE, Hyun Deok IM
  • Publication number: 20220165911
    Abstract: An apparatus for manufacturing a display device, comprising a stage, a first electric-field-applying module on a first side of the stage, and including first probe pins, a first light-irradiating module above the stage, and configured to irradiate light to the stage, a first light emission driver configured to transmit a first emission driving signal to the first light-irradiating module, and a signal output unit configured to output a first emission timing signal for setting light irradiation timing of the first light-irradiating module to the first light emission driver, to output a first alignment signal to any one of the first probe pins, and to output a second alignment signal to another one of the first probe pins, wherein the first emission timing signal and the second alignment signal are alternating current (AC) signals, and wherein periods of the first emission timing signal and the second alignment signal are the same.
    Type: Application
    Filed: November 4, 2021
    Publication date: May 26, 2022
    Inventors: Cheol Ku KANG, Buem Joon KIM, Won Kyu KIM
  • Publication number: 20220130928
    Abstract: A display device includes: a substrate; a bank having a first main opening and sub-openings extending from the first main opening; a first electrode and a second electrode on the first substrate and being spaced apart from each other in a first direction and extending in a second direction; a plurality of light-emitting elements on the first electrode and the second electrode and being spaced apart from each other in the second direction; a first connection electrode on the first electrode and contacting first ends of the light-emitting elements; and a second connection electrode on the second electrode and contacting second ends of the light-emitting elements. The first connection electrode is connected to the first electrode through a first contact, and the second connection electrode is connected to the second electrode through a second contact on the second electrode. The first contact and the second contact overlap the sub-openings.
    Type: Application
    Filed: October 4, 2021
    Publication date: April 28, 2022
    Inventors: Hyun Deok IM, Jong Hyuk KANG, Buem Joon KIM, Eun A CHO
  • Publication number: 20220085246
    Abstract: A display device comprises a substrate, a first electrode and a second electrode disposed on the substrate, a first insulating layer disposed on the first electrode and the second electrode, first light emitting elements disposed on the first insulating layer, a first connection electrode disposed on the first electrode to contact first ends of the first light emitting elements and a second connection electrode disposed on the second electrode to contact second ends of the first light emitting elements, a second insulating layer disposed on the first light emitting elements, the first connection electrode and the second connection electrode, second light emitting elements disposed on the second insulating layer, a third connection electrode disposed on the first connection electrode to contact first ends of the second light emitting elements, and a fourth connection electrode disposed on the second connection electrode to contact second ends of the second light emitting elements.
    Type: Application
    Filed: August 25, 2021
    Publication date: March 17, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Buem Joon KIM, Won Ho LEE, Hyun Deok IM, Jong Hyuk KANG, Eun A CHO
  • Publication number: 20220085260
    Abstract: A display device includes a plurality of pixels including alignment electrodes and light emitting elements disposed between the alignment electrodes, and the alignment electrodes including outer alignment electrodes and center alignment electrodes disposed between the outer alignment electrodes. A distance between the center alignment electrodes is different from a distance between the center alignment electrodes and the outer alignment electrodes.
    Type: Application
    Filed: May 17, 2021
    Publication date: March 17, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Won Ho LEE, Buem Joon KIM, Jong Hyuk KANG, Hyun Deok IM, Eun A CHO
  • Publication number: 20220005719
    Abstract: An apparatus for aligning dipoles is provided. The apparatus includes: an electric field forming unit including a stage and a probe unit, the probe unit being configured to form an electric field on the stage; an inkjet printing device including an inkjet head, the inkjet head being configured to spray ink including a solvent and dipoles dispersed in the solvent onto the stage; a light irradiation device configured to irradiate light onto the stage; and a temperature control device including a temperature control unit, the temperature control unit being configured to control a temperature of the solvent sprayed on the stage.
    Type: Application
    Filed: March 3, 2021
    Publication date: January 6, 2022
    Inventors: Won Ho LEE, Buem Joon KIM, Jong Hyuk KANG, Hyun Deok IM, Chung Sic CHOI
  • Patent number: 8552455
    Abstract: Provided is a semiconductor light-emitting diode including a semiconductor layer having a light-emitting structure; and an ohmic electrode incorporating a nanodot layer, a contact layer, a diffusion-preventing layer and a capping layer on the semiconductor layer. The nanodot layer is formed on the N-polar surface of the semiconductor layer and is formed from a substance comprising at least one of Ag, Al and Au. Also provided is a production method therefor. In the ohmic electrode which has the multi-layer structure comprising the nanodot layer/contact layer/diffusion-preventing layer/capping layer in the semiconductor light-emitting diode of this type, the nanodot layer constitutes the N-polar surface of a nitride semiconductor and improves the charge-injection characteristics such that outstanding ohmic characteristics can be obtained.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: October 8, 2013
    Assignees: Seoul Opto Device Co., Ltd., Postech Academy-Industry Foundation
    Inventors: Jong Lam Lee, Yang Hee Song, Jun Ho Son, Buem Joon Kim
  • Publication number: 20120168803
    Abstract: Provided is a semiconductor light-emitting diode including a semiconductor layer having a light-emitting structure; and an ohmic electrode incorporating a nanodot layer, a contact layer, a diffusion-preventing layer and a capping layer on the semiconductor layer. The nanodot layer is formed on the N-polar surface of the semiconductor layer and is formed from a substance comprising at least one of Ag, Al and Au. Also provided is a production method therefor. In the ohmic electrode which has the multi-layer structure comprising the nanodot layer/contact layer/diffusion-preventing layer/capping layer in the semiconductor light-emitting diode of this type, the nanodot layer constitutes the N-polar surface of a nitride semiconductor and improves the charge-injection characteristics such that outstanding ohmic characteristics can be obtained.
    Type: Application
    Filed: September 7, 2010
    Publication date: July 5, 2012
    Applicants: POSTECH ACADEMY-INDUSTRY FOUNDATION, SEOUL OPTO DEVICE CO., LTD.
    Inventors: Jong Lam Lee, Yang Hee Song, Jun Ho Son, Buem Joon Kim