Patents by Inventor Chang-Hyun Cho

Chang-Hyun Cho 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: 20240136175
    Abstract: The present invention relates to an auxiliary precursor, a thin film precursor composition, a method of forming a thin film using the thin film precursor composition, and a semiconductor substrate fabricated using the method. The present invention provides the thin film precursor composition including a thin film precursor compound and a compound having a predetermined structure that exhibits reaction stability as the auxiliary precursor. By using the thin film precursor composition in a thin film deposition process, side reactions may be suppressed, and thin film growth rate may be appropriately controlled. In addition, since process by-products are removed from a thin film, even when a thin film is formed on a substrate having a complicated structure, step coverage and the thickness uniformity and resistivity characteristics of the thin film may be greatly improved.
    Type: Application
    Filed: February 22, 2022
    Publication date: April 25, 2024
    Inventors: Jae Sun JUNG, Chang Bong YEON, Seung Hyun LEE, Ji Hyun NAM, Sung Woo CHO
  • Publication number: 20240098382
    Abstract: An image processing device including: a decision pixel manager for setting a decision area for a defect candidate pixel, and determining a first decision pixel and a second decision pixel, based on first phase information of pixels included in the decision area with respect to a first modulation frequency of a sensing light source among the pixels; a target pixel determiner for calculating a phase difference between the first decision pixel and the second decision pixel, based on second phase information of the pixels with respect to a second modulation frequency of the sensing light source, and determining the defect candidate pixel as a target pixel, corresponding to that the phase difference exceeds a predetermined reference value; and a phase corrector for changing a phase of the target pixel, based on the phase difference.
    Type: Application
    Filed: February 28, 2023
    Publication date: March 21, 2024
    Applicant: SK hynix Inc.
    Inventors: Woo Young JEONG, Ja Min KOO, Tae Hyun KIM, Jae Hwan JEON, Chang Hun CHO
  • Publication number: 20240082095
    Abstract: Disclosed is an exoskeleton-type rehabilitation robot system, including: a body part provided on a chair in which a user sits and provided with a robot arm capable of moving left or right based on the user seated on the chair; a conversion part configured to convert a position of the robot arm with respect to the body part; a driving part configured to articulate the robot arm with respect to the body part; and a controller configured to detect a change in a position of the robot arm and control a left or right driving mode of the driving part according to the position of the robot arm. In accordance with such a configuration, the exoskeleton-type rehabilitation robot system of the present invention is provided integrally with a chair, thereby having excellent space utilization. In addition, the user's initial preparation for rehabilitation training is simple, which can improve efficiency.
    Type: Application
    Filed: December 27, 2021
    Publication date: March 14, 2024
    Applicant: HEXARHUMANCAR CO., LTD
    Inventors: Chang Soo HAN, Ho Jun KIM, Su Hyun PARK, Young Hoon JI, Jeong Ho CHO, Byung Gab RYU, Jeong Gyu PARK, Dong Eun CHOI
  • Publication number: 20240064957
    Abstract: A semiconductor device includes: a lower structure; a horizontal conductive line which is oriented horizontally over the lower structure; a data storage element which is disposed over the lower structure to be spaced from the horizontal conductive line; a vertical conductive line which is vertically oriented between the horizontal conductive line and the data storage element; a horizontal layer which is oriented horizontally between the horizontal conductive line and the data storage element, and including a recessed side which is disposed adjacent to the vertical conductive line; and a body contact portion oriented which is vertically oriented by penetrating the horizontal layer.
    Type: Application
    Filed: June 23, 2023
    Publication date: February 22, 2024
    Inventors: Chang Hyun CHO, Myoung Jin KANG, Jun Ha KWAK, Jin Sun CHO
  • Publication number: 20220399346
    Abstract: A method of fabricating a semiconductor device. A cell area and a core area is defined in a substrate. A bit line structure disposed in the cell area is provided. A gate structure disposed in the core area is provided, and a core capping film disposed on the gate structure is provided. A height of the core capping film is greater than a height of the bit line structure. A first contact film is formed on the bit line structure. A second contact film is formed on the core capping film. A mask is formed on the first contact film. An upper surface of the core capping film is exposed using the mask. The first contact film is etched until a height of the first contact film becomes less than a height of the bit line structure using an etching process. In the etching process, an etching rate for the first contact film is greater than etching rates for the bit line structure and the core capping film.
    Type: Application
    Filed: August 22, 2022
    Publication date: December 15, 2022
    Inventors: JIN A KIM, SUN YOUNG LEE, YONG KWAN KIM, JI YOUNG KIM, CHANG HYUN CHO
  • Patent number: 11462547
    Abstract: A method of fabricating a semiconductor device. A cell area and a core area is defined in a substrate. A bit line structure disposed in the cell area is provided. A gate structure disposed in the core area is provided, and a core capping film disposed on the gate structure is provided. A height of the core capping film is greater than a height of the bit line structure. A first contact film is formed on the bit line structure. A second contact film is formed on the core capping film. A mask is formed on the first contact film. An upper surface of the core capping film is exposed using the mask. The first contact film is etched until a height of the first contact film becomes less than a height of the bit line structure using an etching process. In the etching process, an etching rate for the first contact film is greater than etching rates for the bit line structure and the core capping film.
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: October 4, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin A Kim, Sun Young Lee, Yong Kwan Kim, Ji Young Kim, Chang Hyun Cho
  • Patent number: 11367865
    Abstract: Disclosed is a method of manufacturing a composite anode material for a lithium secondary battery containing nano-sized silicon and a carbonaceous material through a single process, the method including mixing a carbonaceous material and solid silicon and performing carbothermal shock for rapidly heating the carbonaceous material so that the solid silicon is melted using the heated carbonaceous material and is dispersed and attached in the form of particles to the surface of the carbonaceous material, the size of the silicon particles, which grow on the surface of the carbonaceous material, being adjusted during the carbothermal shock. Accordingly, processing costs can be lower than conventional methods of manufacturing silicon nanoparticles, and manufacturing costs can be further reduced by simultaneously performing formation of the silicon nanoparticles and compounding with the carbonaceous material.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: June 21, 2022
    Assignee: HPK INC.
    Inventors: Chang Hyun Cho, Chang Se Woo, Kap Seung Yang, Chang Ha Lim, Chung Hyung Joh
  • Patent number: 11268215
    Abstract: Provided is a method of producing a carbon fiber, the method including: a) adding an acrylonitrile-based polymer solution to a solution containing a glycol-based compound having a boiling point of 180 to 210° C. to precipitate an acrylonitrile-based polymer; b) melt spinning the acrylonitrile-based polymer to obtain a spun fiber; and c) performing stabilization and carbonization on the spun fiber to obtain a carbon fiber.
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: March 8, 2022
    Assignee: HPK INC.
    Inventors: Chang Hyun Cho, Chang Se Woo, Kap Seung Yang, Chang Ha Lim, Sun Ho Choe, Hong Min Kim, Kyung Ae Oh, Eun Ji Kim
  • Publication number: 20200378034
    Abstract: Provided is a method of producing a carbon fiber, the method including: a) adding an acrylonitrile-based polymer solution to a solution containing a glycol-based compound having a boiling point of 180 to 210° C. to precipitate an acrylonitrile-based polymer; b) melt spinning the acrylonitrile-based polymer to obtain a spun fiber; and c) performing stabilization and carbonization on the spun fiber to obtain a carbon fiber.
    Type: Application
    Filed: April 10, 2020
    Publication date: December 3, 2020
    Inventors: Chang Hyun CHO, Chang Se WOO, Kap Seung YANG, Chang Ha LIM, Sun Ho CHOE, Hong Min KIM, Kyung Ae OH, Eun Ji KIM
  • Publication number: 20200373306
    Abstract: A method of fabricating a semiconductor device. A cell area and a core area is defined in a substrate. A bit line structure disposed in the cell area is provided. A gate structure disposed in the core area is provided, and a core capping film disposed on the gate structure is provided. A height of the core capping film is greater than a height of the bit line structure. A first contact film is formed on the bit line structure. A second contact film is formed on the core capping film. A mask is formed on the first contact film. An upper surface of the core capping film is exposed using the mask. The first contact film is etched until a height of the first contact film becomes less than a height of the bit line structure using an etching process. In the etching process, an etching rate for the first contact film is greater than etching rates for the bit line structure and the core capping film.
    Type: Application
    Filed: August 12, 2020
    Publication date: November 26, 2020
    Inventors: JIN A KIM, Sun Young Lee, Yong Kwan Kim, Ji Young Kim, Chang Hyun Cho
  • Patent number: 10832983
    Abstract: A semiconductor device includes a substrate having a semiconductor layer. A trench is formed within the semiconductor layer. A filling insulating film is disposed within the trench. An insertion liner is disposed within the filling insulating film. The insertion liner is spaced apart from the semiconductor layer and extends along the bottom surface of the trench.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: November 10, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ji Min Choi, Dong Ryul Lee, Ho Ouk Lee, Ji Young Kim, Chang Hyun Cho
  • Patent number: 10811118
    Abstract: A test interface board includes one or more relay circuits and a synchronization signal generator. The relay circuits duplicate a test signal from an automated test equipment (ATE), apply duplicated test signals to each of a plurality of devices under test (DUTs) through one of corresponding channels, and provide the ATE with a plurality of test result signals received from each of the DUTs in response to the duplicated test signals. The synchronization signal generator receives a plurality of status signals from each of the DUTs and provides a timing synchronization signal to the ATE. Each of the status signals indicates a completion of a test operation in one of the DUTs, the test operation is associated with the test signal, and the synchronization signal generator activates the timing synchronization signal when all of the status signals indicate the completion of the test operation.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: October 20, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-Ho Joo, Gyu-Yeol Kim, Jae-Young Lee, Chang-Hyun Cho
  • Patent number: 10804277
    Abstract: A method of fabricating a semiconductor device. A cell area and a core area is defined in a substrate. A bit line structure disposed in the cell area is provided. A gate structure disposed in the core area is provided, and a core capping film disposed on the gate structure is provided. A height of the core capping film is greater than a height of the bit line structure. A first contact film is formed on the bit line structure. A second contact film is formed on the core capping film. A mask is formed on the first contact film. An upper surface of the core capping film is exposed using the mask. The first contact film is etched until a height of the first contact film becomes less than a height of the bit line structure using an etching process. In the etching process, an etching rate for the first contact film is greater than etching rates for the bit line structure and the core capping film.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: October 13, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin A Kim, Sun Young Lee, Yong Kwan Kim, Ji Young Kim, Chang Hyun Cho
  • Publication number: 20200321607
    Abstract: Disclosed is a method of manufacturing a composite anode material for a lithium secondary battery containing nano-sized silicon and a carbonaceous material through a single process, the method including mixing a carbonaceous material and solid silicon and performing carbothermal shock for rapidly heating the carbonaceous material so that the solid silicon is melted using the heated carbonaceous material and is dispersed and attached in the form of particles to the surface of the carbonaceous material, the size of the silicon particles, which grow on the surface of the carbonaceous material, being adjusted during the carbothermal shock. Accordingly, processing costs can be lower than conventional methods of manufacturing silicon nanoparticles, and manufacturing costs can be further reduced by simultaneously performing formation of the silicon nanoparticles and compounding with the carbonaceous material.
    Type: Application
    Filed: November 18, 2019
    Publication date: October 8, 2020
    Applicant: HPK INC.
    Inventors: Chang Hyun CHO, Chang Se WOO, Kap Seung YANG, Chang Ha LIM, Chung Hyung JOH
  • Publication number: 20190378590
    Abstract: A test interface board includes one or more relay circuits and a synchronization signal generator. The relay circuits duplicate a test signal from an automated test equipment (ATE), apply duplicated test signals to each of a plurality of devices under test (DUTs) through one of corresponding channels, and provide the ATE with a plurality of test result signals received from each of the DUTs in response to the duplicated test signals. The synchronization signal generator receives a plurality of status signals from each of the DUTs and provides a timing synchronization signal to the ATE. Each of the status signals indicates a completion of a test operation in one of the DUTs, the test operation is associated with the test signal, and the synchronization signal generator activates the timing synchronization signal when all of the status signals indicate the completion of the test operation.
    Type: Application
    Filed: January 10, 2019
    Publication date: December 12, 2019
    Inventors: SUNG-HO JOO, Gyu-Yeol Kim, Jae-Young Lee, Chang-Hyun Cho
  • Patent number: 10204825
    Abstract: A method for fabricating a semiconductor device includes providing a substrate including a cell region including a bit line structure, a bit line spacer and a lower electrode and a peripheral circuit region including first to third impurity regions, forming an interlayer insulating film on the peripheral circuit region, forming a first metal layer on the interlayer insulating film, forming a first trench and a second trench in the first metal layer between the first and second impurity regions, the second trench is disposed between the second and third impurity regions and exposes the interlayer insulating film, forming a first capping pattern on the first trench to form an air gap in the first trench, filling the second trench with a first insulating material, and forming, on the first metal layer, a contact connected to the third impurity region.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: February 12, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong Ryul Lee, Joong Chan Shin, Dong Jun Lee, Ho Ouk Lee, Ji Min Choi, Ji Young Kim, Chan Sic Yoon, Chang Hyun Cho
  • Patent number: 10204910
    Abstract: A semiconductor device is provided. The provided semiconductor device may have enhanced reliability and operating characteristics. The semiconductor device includes a substrate, a device isolation film formed within the substrate, a first gate structure formed within the substrate, a recess formed on at least one side of the first gate structure and within the substrate and the device isolation film, the recess comprising an upper portion and a lower portion wherein the lower portion of the recess is formed within the substrate and the upper portion of the recess is formed across the substrate and the device isolation film, a buried contact filling the recess and an information storage electrically connected to the buried contact.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: February 12, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin A Kim, Sun Young Lee, Ji Young Kim, Chang Hyun Cho
  • Publication number: 20180233506
    Abstract: A semiconductor device includes a substrate having an active region defined by a device isolation layer and at least a gate trench linearly extending in a first direction to cross the active region, the active region having a gate area at a bottom of the gate trench and a junction area at a surface of the substrate. The device further may include a first conductive line filling the gate trench and extending in the first direction, the first conductive line having a buried gate structure on the gate area of the active region. The device also may include a junction including implanted dopants at the junction area of the active region, and a junction separator on the device isolation layer and defining the junction. The junction separator may be formed of an insulative material and have an etch resistance greater than that of the device isolation layer.
    Type: Application
    Filed: April 17, 2018
    Publication date: August 16, 2018
    Inventors: Chan-Sic YOON, Ho-In RYU, Ki-Seok LEE, Chang-Hyun CHO
  • Patent number: 10050041
    Abstract: A semiconductor device includes a substrate having an active region defined by a device isolation layer and at least a gate trench linearly extending in a first direction to cross the active region, the active region having a gate area at a bottom of the gate trench and a junction area at a surface of the substrate. The device further may include a first conductive line filling the gate trench and extending in the first direction, the first conductive line having a buried gate structure on the gate area of the active region. The device also may include a junction including implanted dopants at the junction area of the active region, and a junction separator on the device isolation layer and defining the junction. The junction separator may be formed of an insulative material and have an etch resistance greater than that of the device isolation layer.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: August 14, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chan-Sic Yoon, Ho-In Ryu, Ki-Seok Lee, Chang-Hyun Cho
  • Publication number: 20180175040
    Abstract: A semiconductor device is provided. The provided semiconductor device may have enhanced reliability and operating characteristics. The semiconductor device includes a substrate, a device isolation film formed within the substrate, a first gate structure formed within the substrate, a recess formed on at least one side of the first gate structure and within the substrate and the device isolation film, the recess comprising an upper portion and a lower portion wherein the lower portion of the recess is formed within the substrate and the upper portion of the recess is formed across the substrate and the device isolation film, a buried contact filling the recess and an information storage electrically connected to the buried contact.
    Type: Application
    Filed: October 2, 2017
    Publication date: June 21, 2018
    Inventors: JIN A KIM, Sun Young Lee, Ji Young Kim, Chang Hyun Cho