Patents by Inventor Dong Chun Park

Dong Chun Park 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: 20240379728
    Abstract: A display device includes a first electrode and a second electrode, spaced apart from each other, and light emitting elements disposed between the first electrode and the second electrode. Each of the light emitting elements includes a first semiconductor layer, a second semiconductor layer disposed on the first semiconductor layer, and an active layer disposed between the first semiconductor layer and the second semiconductor layer. A thickness of the active layer is in a range of about 1 nm to about 2.8 nm, the active layer includes InGa1-xN (about 0.18?x?about 0.20). The light emitting elements emit light with a wavelength in a range of about 462 nm to about 472 nm in a current density in a range of about 0.5 A/cm2 to about 100 A/cm2.
    Type: Application
    Filed: December 12, 2023
    Publication date: November 14, 2024
    Applicant: Samsung Display Co., LTD.
    Inventors: Seung A LEE, Bong Chun PARK, Kwan Jae LEE, Dong Eon LEE, So Young LEE
  • Patent number: 12125536
    Abstract: The present disclosure relates to an electronic device. A memory device includes a plurality of memory cells coupled to a plurality of word lines, a voltage generator generating program-related voltages to be applied to the plurality of word lines, an address decoder transferring the program-related voltages to the plurality of word lines, and an operation controller controlling the voltage generator and the address decoder to apply a program voltage to a selected word line among the plurality of word lines, a second pass voltage to adjacent word lines neighboring the selected word line, a first pass voltage to remaining word lines except for the selected word line and the adjacent word lines, and to apply a ground voltage to the selected word line and the first pass voltage to the adjacent word lines during a first period.
    Type: Grant
    Filed: March 24, 2022
    Date of Patent: October 22, 2024
    Assignee: SK hynix Inc.
    Inventors: Chan Hui Jeong, Dong Hun Kwak, Se Chun Park
  • Publication number: 20240284706
    Abstract: A light emitting element includes: a first semiconductor layer of a first type; a first auxiliary layer on the first semiconductor layer and having a first indium composition ratio; a second auxiliary layer on the first auxiliary layer and having a second indium composition ratio; an active layer including barrier layers and well layers that are alternately arranged on the second auxiliary layer and having a third indium composition ratio; and a second semiconductor layer on the active layer and of a second type different from the first type. The second indium composition ratio is greater than the first indium composition ratio and is less than the third indium composition ratio.
    Type: Application
    Filed: December 19, 2023
    Publication date: August 22, 2024
    Inventors: Bong Chun PARK, Kwan Jae LEE, Dong Eon LEE, So Young LEE, Seung A LEE, Jong Jin LEE
  • Publication number: 20240274261
    Abstract: Provided are a system, device, and method for controlling rehabilitation of a patient. The system includes a first device configured to create a virtual model for a first user on the basis of physical information of the first user using digital twin technology and a second device configured to visualize the virtual model and provide the visualized virtual model to a second user.
    Type: Application
    Filed: February 8, 2024
    Publication date: August 15, 2024
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Su Ran PARK, Hang Kee KIM, Ki Suk LEE, Dong Chun LEE
  • Publication number: 20240265980
    Abstract: A memory device includes: a memory block including a plurality of memory cells; a peripheral circuit for performing a program operation on selected memory cells among the plurality of memory cells; and a control logic for controlling the program operation of the peripheral circuit. The control logic controls the peripheral circuit to perform a foggy program operation on first memory cells connected to a first word line among the plurality of memory cells, perform a foggy program operation on second memory cells connected to a second word line adjacent to the first word line among the plurality of memory cells, and perform a fine program operation on the first memory cells, based on a target program state of the second memory cells.
    Type: Application
    Filed: July 27, 2023
    Publication date: August 8, 2024
    Inventors: Yeong Jo MUN, Dong Hun KWAK, Se Chun PARK
  • Publication number: 20220182769
    Abstract: A MEMS microphone includes a substrate including a vibration area defining a cavity, a supporting area surrounding the vibration area, and a peripheral area surrounding the supporting area, a diaphragm disposed over the substrate to cover the cavity, the diaphragm being spaced apart from the substrate to be configured to sense an acoustic pressure to generate a corresponding displacement, an anchor completely surrounding an end portion of the diaphragm, the anchor being fixed to an upper surface of the substrate to support the diaphragm from the substrate, and a back plate disposed over the diaphragm and in the vibration area, and the back plate being spaced apart from the diaphragm to form an air gap and having a plurality of acoustic holes.
    Type: Application
    Filed: December 7, 2021
    Publication date: June 9, 2022
    Inventor: Dong Chun PARK
  • Patent number: 11259125
    Abstract: A MEMS microphone includes a substrate presenting a vibration area, a supporting area surrounding the vibration area and a peripheral area surrounding the supporting area, the substrate defining a cavity formed in the vibration area, a lower back plate being disposed over the substrate to cover the cavity and having a plurality of lower acoustic holes, a diaphragm being disposed over the lower back plate, the diaphragm being spaced apart from the lower back plate and configured to generate a displacement thereof in response to an applied acoustic pressure, an upper back plate being disposed over the diaphragm, the upper back plate being spaced apart from the diaphragm and having a plurality of upper acoustic holes, and an intermediate anchor being in contact with an upper surface of the lower back plate in the supporting area, the intermediate anchor being configured to support the diaphragm to space the diaphragm from the lower back plate, and to provide elasticity for the diaphragm.
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: February 22, 2022
    Assignee: DB HITEK CO., LTD.
    Inventors: Han Choon Lee, Hyeok In Kwon, Jong Won Sun, Dong Chun Park, Ye Eun Na
  • Publication number: 20200322732
    Abstract: A MEMS microphone includes a substrate presenting a vibration area, a supporting area surrounding the vibration area and a peripheral area surrounding the supporting area, the substrate defining a cavity formed in the vibration area, a lower back plate being disposed over the substrate to cover the cavity and having a plurality of lower acoustic holes, a diaphragm being disposed over the lower back plate, the diaphragm being spaced apart from the lower back plate and configured to generate a displacement thereof in response to an applied acoustic pressure, an upper back plate being disposed over the diaphragm, the upper back plate being spaced apart from the diaphragm and having a plurality of upper acoustic holes, and an intermediate anchor being in contact with an upper surface of the lower back plate in the supporting area, the intermediate anchor being configured to support the diaphragm to space the diaphragm from the lower back plate, and to provide elasticity for the diaphragm.
    Type: Application
    Filed: April 7, 2020
    Publication date: October 8, 2020
    Inventors: Han Choon LEE, Hyeok In KWON, Jong Won SUN, Dong Chun PARK, Ye Eun NA
  • Patent number: 10785557
    Abstract: A MEMS microphone includes a substrate having a cavity, a back plate disposed over the substrate to cover the cavity and having a plurality of acoustic holes, a diaphragm disposed over the substrate to cover the cavity, the diaphragm being disposed under the back plate, including a venting hole communicating with the cavity, and sensing an acoustic pressure to create a displacement, and a first insulation layer interposed between the substrate and the diaphragm to support an end portion of the diaphragm to separate the diaphragm from the substrate, and the first insulation layer having an opening formed at a position corresponding to the cavity to expose the diaphragm. Thus, since the process of forming an anchor may be omitted, the process may be simplified, and process time may be shortened.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: September 22, 2020
    Assignee: DB HITEK CO., LTD.
    Inventors: Dong Chun Park, Han Choon Lee
  • Patent number: 10544038
    Abstract: A MEMS microphone includes a substrate having a cavity, a back plate provided over the substrate and having a plurality of acoustic holes, a diaphragm disposed between the substrate and the back plate, and spaced apart from the substrate and the back plate, a strut located at outer side of the diaphragm, having a lower surface in contact with an upper surface of the substrate and being integrally formed with the upper insulation layer to support the upper insulation layer to space the upper insulation layer from the diaphragm, and a bending prevention member provided on an upper surface of the back plate for preventing the back plate from being bent.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: January 28, 2020
    Assignee: DB HITEK CO., LTD.
    Inventors: Dong Chun Park, Jong Won Sun
  • Publication number: 20190047849
    Abstract: A MEMS microphone includes a substrate having a cavity, a back plate provided over the substrate and having a plurality of acoustic holes, a diaphragm disposed between the substrate and the back plate, and spaced apart from the substrate and the back plate, a strut located at outer side of the diaphragm, having a lower surface in contact with an upper surface of the substrate and being integrally formed with the upper insulation layer to support the upper insulation layer to space the upper insulation layer from the diaphragm, and a bending prevention member provided on an upper surface of the back plate for preventing the back plate from being bent.
    Type: Application
    Filed: August 7, 2018
    Publication date: February 14, 2019
    Inventors: Dong Chun PARK, Jong Won SUN
  • Publication number: 20170359648
    Abstract: A MEMS microphone includes a substrate having a cavity, a back plate disposed over the substrate to cover the cavity and having a plurality of acoustic holes, a diaphragm disposed over the substrate to cover the cavity, the diaphragm being disposed under the back plate, including a venting hole communicating with the cavity, and sensing an acoustic pressure to create a displacement, and a first insulation layer interposed between the substrate and the diaphragm to support an end portion of the diaphragm to separate the diaphragm from the substrate, and the first insulation layer having an opening formed at a position corresponding to the cavity to expose the diaphragm. Thus, since the process of forming an anchor may be omitted, the process may be simplified, and process time may be shortened.
    Type: Application
    Filed: June 13, 2017
    Publication date: December 14, 2017
    Inventors: Dong Chun Park, Han Choon Lee