Patents by Inventor Jae-joon Choi

Jae-joon Choi 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: 20240143114
    Abstract: A driving circuit includes: a display driver to generate a horizontal synchronization signal and a vertical synchronization signal according to a first clock signal of a first oscillator; a sensor driver to generate a touch signal according to a second clock signal of a second oscillator; and a determination circuit to detect a cycle of at least one of the horizontal synchronization signal or the vertical synchronization signal according to the second clock signal, and output a detection signal when the cycle is out of a range. The determination circuit is a part of the display driver or the sensor driver.
    Type: Application
    Filed: June 26, 2023
    Publication date: May 2, 2024
    Inventors: Jun Young KO, Tae Hyeon YANG, Han Su CHO, Tae Joon KIM, Hyun Wook CHO, Jae Woo CHOI
  • Publication number: 20240140944
    Abstract: The present invention relates to a novel naphthyridinone derivative compound, a pharmaceutically acceptable salt thereof, a hydrate thereof, or a stereoisomer thereof, which are each relevant to a compound for inhibiting ENPP1, a composition for inhibiting ENPP1, and a method for inhibiting ENPP1.
    Type: Application
    Filed: December 29, 2021
    Publication date: May 2, 2024
    Applicant: TXINNO BIOSCIENCE INC.
    Inventors: Seo Jung Han, Chan Sun Park, Sung Joon Kim, Jae Eun Cheong, Jung Hwan Choi, Ali Imran, Sun Woo Lee, Yong Yea Park, Ah Ran Yu, Sun Young Park
  • Patent number: 11967847
    Abstract: A battery bank control device is provided for setting a power limit value of a battery bank in which a plurality of battery racks (BRs) are connected in parallel. The device includes: a voltage measurement unit measuring a voltage of each BR of the plurality of BRs; a first power limit calculation unit calculating a first power limit value according to a state of charge (SOC) calculated based on the voltage of each BR with respect to each BR; a capacity ratio calculation unit calculating a capacity ratio of each BR based on capacity information of the plurality of BRs; a second power limit calculation unit calculating a second power limit value using the capacity ratio and the first power limit value of each BR; and a battery bank power limit calculation unit calculating a battery bank power limit value using the second power limit value of each BR.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: April 23, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Sung Yul Yoon, Yoon Joon Choi, Hae In Choi, Jae Sung Im, Hyo Seok Lee
  • Publication number: 20240120276
    Abstract: A three-dimensional semiconductor integrated circuit device including an inter-die interface is provided. The device includes a top die including a plurality of micro cells provided on a top surface of the top die, a plurality of micro bumps provided on a bottom surface of the top die, and wiring patterns connecting the plurality of micro cells to the plurality of micro bumps; and a bottom die including a plurality of macro cells provided on a top surface thereof, wherein the plurality of macro cells are electrically connected to the plurality of micro bumps, respectively, wherein a size of a region in which the plurality of micro cells are provided is smaller than a size of a region in which the plurality of micro bumps are provided.
    Type: Application
    Filed: July 27, 2023
    Publication date: April 11, 2024
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae Seung CHOI, Byung-Su KIM, Bong Il PARK, Chang Seok KWAK, Sun Hee PARK, Sang Joon CHEON
  • Patent number: 11945744
    Abstract: Disclosed are a method and apparatus for reusing wastewater. The method for reusing wastewater disclosed herein includes: generating a mixed wastewater by mixing multiple types of wastewater (S20); performing a first purification by passing the mixed wastewater through a flocculation-sedimentation unit (S40); performing a second purification by passing an effluent of the flocculation-sedimentation unit through a membrane bioreactor (MBR) (S60); performing a third purification by passing an effluent of the MBR through a reverse-osmosis membrane unit (S80); and reusing an effluent of the reverse-osmosis membrane unit as cooling water or industrial water (S100).
    Type: Grant
    Filed: April 14, 2023
    Date of Patent: April 2, 2024
    Assignees: SAMSUNG ENGINEERING CO., LTD., SAMSUNG ELECTRONICS CO., LTD
    Inventors: Seok Hwan Hong, Dae Soo Park, Seung Joon Chung, Yong Xun Jin, Jae Hyung Park, Jae Hoon Choi, Jae Dong Hwang, Jong Keun Yi, Su Hyoung Cho, Kyu Won Hwang, June Yurl Hur, Je Hun Kim, Ji Won Chun
  • Patent number: 11942018
    Abstract: A display device is described including a display panel for displaying an image and an input sensing unit disposed on the display panel for sensing a user input. The input sensing unit includes: an electrode unit including first electrodes and second electrodes which intersect each other and a control unit for determining the proximity of an object or the shape of the object, based on capacitance change values of the first electrodes and the second electrodes. In a first mode the input sensing unit is driven using a self-capacitance method. The control unit may merge the capacitance change values, and determine the proximity of the object based on the merged value. In a second mode based on mutual capacitance, the control unit may determine the shape of the object.
    Type: Grant
    Filed: October 4, 2022
    Date of Patent: March 26, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae Woo Choi, Tae Joon Kim, Eun Sol Seo, Hyun Wook Cho
  • Patent number: 11920827
    Abstract: The present disclosure relates to an air cleaner. The air cleaner includes a main body, a panel configured to be movable with respect to the main body, a power transmission device connected to the panel, a vibration-preventing member connected to the power transmission device and including a vibration-preventing portion in contact with the power transmission device and a slip-preventing portion having a thickness thinner than the vibration-preventing portion, and a driving source connected to the vibration-preventing member.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: March 5, 2024
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Mun Sub Kim, Jae-Woo Choi, Hyeong Joon Seo, Du Han Jung
  • Publication number: 20240033840
    Abstract: Disclosed are a laser bonding apparatus and a laser bonding method capable of bonding an electronic component to a three-dimensional structure having a regular or irregular shape in a curved portion such as an automobile tail lamp or a headlamp. The laser bonding apparatus and method for a three-dimensional structure may prevent misalignment and poor bonding of the electronic component with respect to the three-dimensional structure.
    Type: Application
    Filed: October 6, 2023
    Publication date: February 1, 2024
    Inventors: Jae Joon CHOI, Byung Rock KIM
  • Publication number: 20230405712
    Abstract: The present invention relates to a turntable-type probe pin laser bonding apparatus. More particularly, a dual laser optic module of the turntable-type probe pin bonding apparatus of the present invention provides an integrated dual laser optic module that is overlappingly irradiated on a co-focus by improving the conventional first and second laser optic modules that have been completely separated and arranged independently with different focal points. During laser bonding of probe pins, which are getting miniaturized day by day, the power and density of the first and second laser beams overlappingly irradiated from the integrated dual laser optic module can be precisely controlled so that a turntable-type probe pin laser bonding apparatus of the present invention can significantly improve the bonding defect rate, as well as contribute to high integration and high precision of the apparatus.
    Type: Application
    Filed: October 28, 2022
    Publication date: December 21, 2023
    Inventors: Jae Joon CHOI, Byung Roc KIM, Tae Kyu KIM, Dong Sik KIM, Jun Gi LEE, Sang Won LEE
  • Publication number: 20230381900
    Abstract: The present invention relates to a turntable-type probe pin laser bonding apparatus wherein a pin gripper mounted on four surfaces automatically laser-bonds a probe pin to a probe card while continuously rotating pin grippers in a turntable method. More particularly, the present invention relates to a multi-axis gripper unit of a turntable type probe pin laser bonding apparatus that can continuously process the pickup, dipping, and laser bonding of probe pins while freely moving linearly or rotationally in multi-axis directions, for example, the X-axis, Y-axis, X?-axis, Y?-axis, and the gripper axis, with high precision in micrometer units by being applied to the laser bonding unit.
    Type: Application
    Filed: October 28, 2022
    Publication date: November 30, 2023
    Inventors: Jae Joon CHOI, Byung Roc KIM, Tae Kyu KIM, Dong Sik KIM, Jun Gi LEE, Sang Won LEE
  • Publication number: 20230387069
    Abstract: The present invention relates to a laser reflow apparatus. More particularly, the present invention relates to a compression-type laser reflow apparatus with a vacuum chamber that enables mass processing by simultaneously pressuring and reflowing a plurality of electronic components by performing a laser reflow process by pressing with a light-transmitting pressing member and irradiating a laser beam inside the vacuum chamber, and that effectively prevents the generation of voids by fumes during soldering, so that the defect rate of the laser reflow process is greatly improved.
    Type: Application
    Filed: October 28, 2022
    Publication date: November 30, 2023
    Inventors: Jae Joon CHOI, Byung Roc KIM, Eun Sung CHOI, Hwan Soo YEO, Seung Hyun SEO
  • Patent number: 11813688
    Abstract: Disclosed are a laser bonding apparatus and a laser bonding method capable of bonding an electronic component to a three-dimensional structure having a regular or irregular shape in a curved portion such as an automobile tail lamp or a headlamp. The laser bonding apparatus and method for a three-dimensional structure may prevent misalignment and poor bonding of the electronic component with respect to the three-dimensional structure.
    Type: Grant
    Filed: July 6, 2020
    Date of Patent: November 14, 2023
    Assignee: LASERSSEL CO., LTD.
    Inventors: Jae Joon Choi, Byung Rock Kim
  • Patent number: 11699676
    Abstract: Provided is a multi-beam laser debonding apparatus for debonding an electronic component from a substrate, the apparatus including: a first laser module to emit a first laser beam to a predetermined range of a first substrate area including attachment positions of a debonding target electronic component and a neighboring electronic component to thereby heat a solder of the electronic components to reach a predetermined pre-heat temperature; and a second laser module to emit a second laser beam overlapping the first laser beam to a second substrate area smaller than the first substrate area, the second substrate area including the attachment position of the debonding target electronic component to thereby heat the solder of the debonding target electronic component to reach a debonding temperature at which the solder commences melting.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: July 11, 2023
    Assignee: LASERSSEL CO., LTD.
    Inventors: Jae-Joon Choi, Nam-Seong Kim, Byung-Roc Kim, Jong-Jae Yoo, Boo-Seong Park
  • Publication number: 20220410298
    Abstract: The laser reflow apparatus of the present invention comprises a laser pressurization head module for pressing a bonding object, which includes a plurality of electronic components arranged on a substrate by a transmissive pressurization member while irradiating a laser beam through the pressurization member, to bond the electronic components to the substrate; and a bonding object transfer module for transferring the bonding object having transferred from one side of the laser pressurization head module to carry the bonding object to the other side thereof after passing through a reflow process of the laser pressurized head module.
    Type: Application
    Filed: December 10, 2019
    Publication date: December 29, 2022
    Inventors: Jae Joon CHOI, Byung Roc KIM, Jae Koo KIM, Ki Chul JIN
  • Patent number: 11515287
    Abstract: The present invention relates to a reel-to-reel layer reflow method, which emits a uniformized laser beam, which can easily adjust the emission area, and which is for the purpose of improving productivity. An embodiment of the present invention provides a reel-to-reel layer reflow method comprising the steps of: a) transferring a substrate, which has been wound in a roll type, to one side while unwinding the same; b) forming a solder portion on the substrate; c) seating an emission target element on the solder portion and seating a non-emission target element on the substrate; d) surface-emitting a laser beam to the solder portion, on which the emission target element is seated, such that the emission target element is attached to the substrate; e) inspecting the substrate structure manufactured through said step d); and f) winding the substrate structure in a roll type.
    Type: Grant
    Filed: January 14, 2022
    Date of Patent: November 29, 2022
    Assignee: LASERSSEL CO., LTD.
    Inventors: Byung Rock Kim, Wan Ki Cho, Jae Joon Choi
  • Publication number: 20220157768
    Abstract: Provided is a laser reflow apparatus for reflowing electronic components on a substrate disposed on a stage, the apparatus including: a laser emission unit comprised of a plurality of laser modules for emitting a laser beam having a flat top output profile in at least one section of the substrate on which the electronic components are disposed; a camera unit comprising at least one camera module for capturing a reflowing process of the electronic components performed by the laser beam; and a laser output control unit configured to generate a control signal for independently controlling the respective laser modules of the laser emission unit based on a signal output from the camera unit and apply the control signal to the laser emission unit.
    Type: Application
    Filed: February 7, 2022
    Publication date: May 19, 2022
    Inventors: Nam Seong KIM, Jae Joon CHOI
  • Publication number: 20220157769
    Abstract: The present invention relates to a reel-to-reel layer reflow method, which emits a uniformized laser beam, which can easily adjust the emission area, and which is for the purpose of improving productivity. An embodiment of the present invention provides a reel-to-reel layer reflow method comprising the steps of: a) transferring a substrate, which has been wound in a roll type, to one side while unwinding the same; b) forming a solder portion on the substrate; c) seating an emission target element on the solder portion and seating a non-emission target element on the substrate; d) surface-emitting a laser beam to the solder portion, on which the emission target element is seated, such that the emission target element is attached to the substrate; e) inspecting the substrate structure manufactured through said step d); and f) winding the substrate structure in a roll type.
    Type: Application
    Filed: January 14, 2022
    Publication date: May 19, 2022
    Inventors: Byung Rock KIM, Wan Ki CHO, Jae Joon CHOI
  • Patent number: 11276665
    Abstract: Provided is a laser reflow apparatus for reflowing electronic components on a substrate disposed on a stage, the apparatus including: a laser emission unit comprised of a plurality of laser modules for emitting a laser beam having a flat top output profile in at least one section of the substrate on which the electronic components are disposed; a camera unit comprising at least one camera module for capturing a reflowing process of the electronic components performed by the laser beam; and a laser output control unit configured to generate a control signal for independently controlling the respective laser modules of the laser emission unit based on a signal output from the camera unit and apply the control signal to the laser emission unit.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: March 15, 2022
    Assignee: LASERSSEL CO., LTD.
    Inventors: Nam Seong Kim, Jae Joon Choi
  • Patent number: 11257783
    Abstract: The present invention relates to a reel-to-reel layer reflow method, which emits a uniformized laser beam, which can easily adjust the emission area, and which is for the purpose of improving productivity. An embodiment of the present invention provides a reel-to-reel layer reflow method comprising the steps of: a) transferring a substrate, which has been wound in a roll type, to one side while unwinding the same; b) forming a solder portion on the substrate; c) seating an emission target element on the solder portion and seating a non-emission target element on the substrate; d) surface-emitting a laser beam to the solder portion, on which the emission target element is seated, such that the emission target element is attached to the substrate; e) inspecting the substrate structure manufactured through said step d); and f) winding the substrate structure in a roll type.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: February 22, 2022
    Assignee: LASERSSEL CO., LTD.
    Inventors: Byung Rock Kim, Wan Ki Cho, Jae Joon Choi
  • Patent number: 11213913
    Abstract: A laser reflow apparatus capable of reducing tact time for a single bonding object, and accelerating an overall bonding process for all of a plurality of bonding objects is provided. The laser reflow apparatus comprises a bonding object transfer unit including a stage, a laser emission unit, a beam transmission plate, and a beam transmission plate transfer unit.
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: January 4, 2022
    Assignee: LASERSSEL CO., LTD.
    Inventors: Jae Joon Choi, Byoung Cheol Kim, Byung Roc Kim, Nam Seong Kim