Patents by Inventor Byung Ju Lee

Byung Ju Lee 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: 12183771
    Abstract: A display device includes a first subpixel and a second subpixel, wherein the first subpixel includes a first light source unit including a plurality of first light-emitting elements configured to emit first light having a center wavelength of a first wavelength, the second subpixel includes a second light source unit including a plurality of second light-emitting elements configured to emit second light having a center wavelength of a second wavelength, the first light source unit includes first to nth light-emitting groups that are connected in series, each of the groups including the plurality of first light-emitting elements, the second light source unit includes first to mth light-emitting groups that are connected in series and each of the groups includes the plurality of second light-emitting elements, where n and m are natural numbers, and the second wavelength is different from the first wavelength.
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: December 31, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung Geun Lee, Byung Ju Lee, Hoo Keun Park, Chul Jong Yoo, Dong Eon Lee
  • Patent number: 12170344
    Abstract: A display device includes a base substrate, a partitioning wall on the base substrate, wherein the partitioning wall includes a first partitioning wall, and a second partitioning wall on the first partitioning wall, and a light emitting element spaced from the partitioning wall and located in a space surrounded by the partitioning wall in a plan view. The first partitioning wall and the light emitting element include a same material. The second partitioning wall includes a transparent conductive oxide.
    Type: Grant
    Filed: January 25, 2022
    Date of Patent: December 17, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byung Ju Lee, Dae Ho Song, Jin Woo Choi, Jin Wan Kim, Seung Geun Lee
  • Publication number: 20240348096
    Abstract: A multiphase power supply apparatus for wireless power transmission and a control method thereof are disclosed. The multiphase power supply apparatus includes two power supply coils and coupling coefficient between the power supply coils is below a predetermined value. When it is determined that a deviation in alignment with the corresponding pickup has occurred, the phase difference between the inverters is adjusted. When adjusted to the optimum phase difference, the output of the pickup coils becomes uniform, even if there is a deviation in the alignment between the power supply apparatus and the pickup.
    Type: Application
    Filed: May 30, 2024
    Publication date: October 17, 2024
    Inventors: Kyo-Il LEE, Seong-Joo KANG, Yong-Dal LEE, Dong-Kwan SEO, Tae-Yeon LEE, Byung-Ju LEE, Dong-Ho CHO
  • Publication number: 20240265854
    Abstract: A display device includes a substrate, a plurality of pixel electrodes on the substrate and spaced apart from each other, a plurality of light-emitting elements on the plurality of pixel electrodes, respectively, and a common electrode layer on the plurality of light-emitting elements and to which a common voltage is applied. The plurality of light-emitting elements include a first light-emitting element that is configured to emit first light according to a first driving current and a second light-emitting element that is configured to emit second light according to a second driving current. An active layer of the first light-emitting element is the same as an active layer of the second light-emitting element.
    Type: Application
    Filed: March 20, 2024
    Publication date: August 8, 2024
    Inventors: Jin Wan KIM, Seung Geun LEE, Sang Jo KIM, Su Jeong KIM, Young Jin SONG, Byung Ju LEE
  • Patent number: 11990568
    Abstract: A light emitting device, a display device including a light emitting device, and a method of manufacturing a display device are provided. A light emitting device may include a substrate, and a plurality of light emitting element layers stacked on the substrate. Each of the light emitting element layers may include an insulating layer entirely disposed on the substrate, a first electrode and a second electrode disposed on the insulating layer and spaced apart from each other, and a plurality of light emitting elements disposed between the first electrode and the second electrode.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: May 21, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young Rag Do, Byung Ju Lee
  • Patent number: 11942025
    Abstract: A display device includes a substrate, a plurality of pixel electrodes on the substrate and spaced apart from each other, a plurality of light-emitting elements on the plurality of pixel electrodes, respectively, and a common electrode layer on the plurality of light-emitting elements and to which a common voltage is applied. The plurality of light-emitting elements include a first light-emitting element that is configured to emit first light according to a first driving current and a second light-emitting element that is configured to emit second light according to a second driving current. An active layer of the first light-emitting element is the same as an active layer of the second light-emitting element.
    Type: Grant
    Filed: June 30, 2022
    Date of Patent: March 26, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin Wan Kim, Seung Geun Lee, Sang Jo Kim, Su Jeong Kim, Young Jin Song, Byung Ju Lee
  • Publication number: 20240063346
    Abstract: A display device comprises a substrate, and a first light emitting element, a second light emitting element, and a third light emitting element provided on the substrate and each including a first semiconductor layer, an active layer, and a second semiconductor layer. A third semiconductor layer is provided on the first light emitting element, a first color conversion layer is provided on the second light emitting element, and a second color conversion layer is provided on the third light emitting element, wherein the first color conversion layer and the second color conversion layer include the same semiconductor material as the third semiconductor layer, and further include dopants different from that of the second semiconductor layer.
    Type: Application
    Filed: June 7, 2023
    Publication date: February 22, 2024
    Inventors: Sang Jo KIM, Byung Ju LEE
  • Publication number: 20230384091
    Abstract: In order to calculate an actual distance between coordinates in an image, a regular image for an original image may be generated based on an intrinsic parameter of a camera and pose information of the camera, based on first coordinates in the regular image that are received, first world coordinates corresponding to the first coordinates may be calculated in a world coordinate system, based on second coordinates in the regular image that are received, second world coordinates corresponding to the second coordinates may be calculated in the world coordinate system, and a distance between the first world coordinates and the second coordinates may be calculated.
    Type: Application
    Filed: October 30, 2022
    Publication date: November 30, 2023
    Applicant: 3i Inc.
    Inventors: Ken KIM, Ji Wuck JUNG, Kevin Nathanael SANTOSO, Byung Ju LEE
  • Publication number: 20230352640
    Abstract: A includes a substrate including a plurality of pixels, a plurality of transistors disposed on the substrate, a passivation layer overlapping the plurality of transistors, a first electrode and a second electrode disposed on the passivation layer and spaced apart from each other, an insulating layer disposed on the first electrode and the second electrode, a plurality of light emitting elements disposed between the first electrode and the second electrode on the insulating layer and electrically connected to the first electrode and the second electrode, and an insulating reflective layer disposed between the passivation layer and the plurality of light emitting elements.
    Type: Application
    Filed: August 3, 2021
    Publication date: November 2, 2023
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Chul Jong YOO, Dong Eon LEE, Myeong Hee KIM, Hoo Keun PARK, Byung Ju LEE, So Young LEE, Seung Geun LEE, Seung A LEE, Jong Won LEE, Ji Hyun HAM
  • Patent number: 11769787
    Abstract: A display device includes a substrate; a first electrode and a second electrode arranged to be spaced apart from each other on the substrate; a first insulating layer on the substrate; a light emitting element on the first insulating layer, located between the first electrode and the second electrode, and including a first end portion and a second end portion; a third electrode on the substrate and electrically connected to the first electrode and the first end portion; a fourth electrode on the substrate and electrically connected to the second electrode and the second end portion; a second insulating layer on the substrate and covering the light emitting element, the third electrode, and the fourth electrode; and a light diffusion layer on the second insulating layer and including a light diffusion particle.
    Type: Grant
    Filed: August 16, 2021
    Date of Patent: September 26, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong Gyun Kim, Moon Jung An, Dong Eon Lee, Hye Lim Kang, Hoo Keun Park, Byung Ju Lee
  • Publication number: 20230268114
    Abstract: Disclosed are a multi pickup coil for wireless charging of an electric vehicle such as an electric bus or an electric passenger car and industrial equipment while stopping or driving, and a pickup apparatus having the multi pickup coil. The multi pickup coil and the pickup apparatus provide high-capacity and high-efficiency wireless charging per unit area by performing performance enhancement through an optimal design in order to overcome the limitations of a circular pickup coil.
    Type: Application
    Filed: July 2, 2021
    Publication date: August 24, 2023
    Inventors: Bo-Yune SONG, Kyo-II LEE, Seong-Joo KANG, Ye-Chang JEONG, Dong-Kwan SEO, Byung-Ju LEE, Jin-Seob CHOI
  • Publication number: 20230268464
    Abstract: A method of manufacturing a light emitting element, comprises placing a plurality of mask patterns on a substrate, forming first patterns on the substrate through the plurality of mask patterns, the first patterns recessed from an upper surface of the substrate, forming an undoped semiconductor layer on the substrate on which the first patterns are formed, etching the undoped semiconductor layer, forming a first semiconductor layer on the undoped semiconductor layer, forming an active layer on the first semiconductor layer, forming a second semiconductor layer on the active layer, and forming an electrode layer on the second semiconductor layer, wherein the undoped semiconductor layer includes second patterns recessed from a lower surface of the undoped semiconductor layer.
    Type: Application
    Filed: December 5, 2022
    Publication date: August 24, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Byung Ju LEE, Jin Wan KIM, Hoo Keun PARK, Young Jin SONG, Seung Geun LEE
  • Publication number: 20230246127
    Abstract: A display device includes first banks spaced apart from one another and disposed on a substrate, a first electrode and a second electrode disposed on the respective first banks to cover the respective first banks, the first electrode and the second electrode being spaced apart from each other, and a light-emitting element disposed between the first electrode and the second electrode. The light-emitting element includes an active layer, a first semiconductor layer, and a second semiconductor layer disposed between the active layer and the first electrode. The first semiconductor layer includes a main semiconductor layer and a nanoporous layer disposed in the main semiconductor layer.
    Type: Application
    Filed: September 14, 2022
    Publication date: August 3, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Hoo Keun PARK, Sang Jo KIM, Su Jeong KIM, Byung Ju LEE
  • Publication number: 20230111670
    Abstract: A display device includes a substrate, a plurality of pixel electrodes on the substrate and spaced apart from each other, a plurality of light-emitting elements on the plurality of pixel electrodes, respectively, and a common electrode layer on the plurality of light-emitting elements and to which a common voltage is applied. The plurality of light-emitting elements include a first light-emitting element that is configured to emit first light according to a first driving current and a second light-emitting element that is configured to emit second light according to a second driving current. An active layer of the first light-emitting element is the same as an active layer of the second light-emitting element.
    Type: Application
    Filed: June 30, 2022
    Publication date: April 13, 2023
    Inventors: Jin Wan KIM, Seung Geun LEE, Sang Jo KIM, Su Jeong KIM, Young Jin SONG, Byung Ju LEE
  • Publication number: 20230111615
    Abstract: A display device is provided. The display device comprises a plurality of pixel electrodes on a first substrate and spaced apart from each other; a plurality of light emitting elements on the plurality of pixel electrodes; and a common electrode layer on the plurality of light emitting elements, wherein the common electrode layer includes a first common electrode layer on the plurality of light emitting elements, and a second common electrode layer between the first common electrode layer and the plurality of light emitting elements, and a lattice constant of the first common electrode layer is larger than a lattice constant of the second common electrode layer.
    Type: Application
    Filed: June 30, 2022
    Publication date: April 13, 2023
    Inventors: Jin Wan KIM, Sang Jo KIM, Hoo Keun PARK, Byung Ju LEE
  • Publication number: 20230066350
    Abstract: A light emitting element may include: a light emitting element core including a first semiconductor layer, a second semiconductor layer, and a light emitting layer between the first semiconductor layer and the second semiconductor layer; and a single crystal insulating layer around a side surface of the light emitting element core.
    Type: Application
    Filed: May 5, 2022
    Publication date: March 2, 2023
    Inventors: Young Chul SIM, Jin Wan KIM, Dong Uk KIM, Dong Kyun SEO, Byung Ju LEE, Seung Geun LEE, Hyung Rae CHA
  • Publication number: 20220352238
    Abstract: A display device includes light-emitting elements disposed on a substrate, wherein each of the light-emitting elements includes a first semiconductor layer, an active layer disposed on the first semiconductor layer, a second semiconductor layer disposed on the active layer, and a porous layer disposed on the second semiconductor layer.
    Type: Application
    Filed: December 22, 2021
    Publication date: November 3, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Su Jeong KIM, Young Jin SONG, Jin Wan KIM, Dae Ho SONG, Jin Woo CHOI, Sang Jo KIM, Hoo Keun PARK, Byung Ju LEE, Seung Geun LEE
  • Publication number: 20220352251
    Abstract: The disclosure relates to a display device and a method of manufacturing the same. A display device includes a pixel including a first electrode, a light emitting element disposed on the first electrode, and a second electrode disposed on the light emitting element. The light emitting element includes: an emission layer that generates light of a first color; a first light conversion layer disposed between the emission layer and the first electrode to convert the light of the first color into light of a second color; a second light conversion layer disposed between the first light conversion layer and the first electrode to convert the light of the first color or the light of the second color into light of a third color; and a first semiconductor layer disposed between the emission layer and the second electrode and including a first conductivity type dopant.
    Type: Application
    Filed: March 25, 2022
    Publication date: November 3, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Seung Geun LEE, Min Woo KIM, Byung Ju LEE, Dae Ho SONG, Jin Woo CHOI
  • Publication number: 20220352422
    Abstract: A display device includes a base substrate, a partitioning wall on the base substrate, wherein the partitioning wall includes a first partitioning wall, and a second partitioning wall on the first partitioning wall, and a light emitting element spaced from the partitioning wall and located in a space surrounded by the partitioning wall in a plan view. The first partitioning wall and the light emitting element include a same material. The second partitioning wall includes a transparent conductive oxide.
    Type: Application
    Filed: January 25, 2022
    Publication date: November 3, 2022
    Inventors: Byung Ju LEE, Dae Ho SONG, Jin Woo CHOI, Jin wan KIM, Seung Geun LEE
  • Publication number: 20220352425
    Abstract: A display device includes pixels including a first pixel and a second pixel; a first electrode disposed in a light-emitting area of the first pixel; a first light-emitting element disposed on the first electrode and electrically connected to the first electrode, the first light-emitting element including a first light-emitting layer emitting light of a first color; a second electrode disposed in a light-emitting area of the second pixel; a second light-emitting element disposed on the second electrode and electrically connected to the second electrode, the second light-emitting element including a second light-emitting layer emitting light of a second color; and a bank disposed around the pixels to surround the light-emitting area of the first pixel and the light-emitting area of the second pixel, and including an inactive light-emitting layer of a same material as the first light-emitting layer.
    Type: Application
    Filed: March 29, 2022
    Publication date: November 3, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Jin Wan KIM, Dae Ho SONG, Byung Ju LEE, Seung Geun LEE, Jin Woo CHOI