Patents by Inventor Jeong-Sang YU

Jeong-Sang YU 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: 11785713
    Abstract: A flexible cable jumper structure and manufacturing method thereof. The flexible cable jumper device of the present disclosure includes a cover layer, a first metal layer stacked on the cover layer and having a circuit pattern formed thereon, a first dielectric layer stacked on the first metal layer, a first adhesive layer applied on the first dielectric layer, a second metal layer stacked on the first dielectric layer to which the first adhesive layer is applied and having a circuit pattern formed thereon, a heat-resistant layer stacked on the second metal layer, and a terminal layer formed in one region of the heat-resistant layer and electrically connected to the first metal layer and the second metal layer.
    Type: Grant
    Filed: January 13, 2020
    Date of Patent: October 10, 2023
    Assignee: AMOGREENTECH CO., LTD.
    Inventors: Jeong-Sang Yu, Young-Suk Oh, Taek-Min Kim
  • Publication number: 20220192004
    Abstract: A flexible cable jumper structure and manufacturing method thereof. The flexible cable jumper device of the present disclosure includes a cover layer, a first metal layer device of the cover layer and having a circuit pattern formed thereon, a first dielectric layer stacked on the first metal layer, a first adhesive layer applied on the first dielectric layer, a second metal layer stacked on the first dielectric layer to which the first adhesive layer is applied and having a circuit pattern formed thereon, a heat-resistant layer stacked on the second metal layer, and a terminal layer formed in one region of the heat-resistant layer and electrically connected to the first metal layer and the second metal layer.
    Type: Application
    Filed: January 13, 2020
    Publication date: June 16, 2022
    Inventors: Jeong-Sang Yu, Young-Suk Oh, Taek-Min Kim
  • Patent number: 11330709
    Abstract: A flexible printed circuit board according to the present disclosure includes: a first base sheet, a second base sheet, and a first protection sheet. The first base sheet includes a first Teflon film and a first circuit pattern disposed on the first Teflon film. The second base sheet includes a second Teflon film and a second circuit pattern disposed on the second Teflon film, and is laminated on the first base sheet. The first protection sheet covers the first base sheet. A portion of the first base sheet that is exposed to the first protection sheet is surface-modified.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: May 10, 2022
    Assignee: AMOGREENTECH CO., LTD.
    Inventor: Jeong Sang Yu
  • Publication number: 20200389972
    Abstract: A flexible printed circuit board according to the present disclosure includes: a first base sheet, a second base sheet, and a first protection sheet. The first base sheet includes a first Teflon film and a first circuit pattern disposed on the first Teflon film. The second base sheet includes a second Teflon film and a second circuit pattern disposed on the second Teflon film, and is laminated on the first base sheet. The first protection sheet covers the first base sheet. A portion of the first base sheet that is exposed to the first protection sheet is surface-modified.
    Type: Application
    Filed: January 31, 2019
    Publication date: December 10, 2020
    Inventor: JEONG SANG YU
  • Patent number: 10512175
    Abstract: A method for manufacturing a flexible printed circuit board includes preliminarily thermally deforming s substrate through heating, forming a circuit pattern with a conductive paste on the preliminarily thermally deformed substrate, and firing the circuit pattern. A flexible printed circuit board includes a substrate, and a circuit pattern formed by firing a conductive paste on a first surface of the substrate. The substrate is preliminarily thermally deformed and, thus, a shrinkage variation thereof before and after firing the conductive paste is zero. Dimensional stability when firing the circuit pattern printed with the conductive paste can be ensured, deterioration of adhesion between the circuit pattern and the substrate attributable to film deformation upon firing can be prevented, and stable adhesion of the circuit pattern can be maintained even after firing.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: December 17, 2019
    Assignee: AMOGREENTECH CO., LTD.
    Inventors: O-Chung Kwon, Jeong-Sang Yu, Jae-Sic Kim, Yong-Il Kim, Hyun-Soo Jang
  • Patent number: 9949379
    Abstract: A flexible printed circuit board includes a substrate, a circuit pattern formed on the substrate, and a protective coating layer formed on the substrate by applying and curing a coating solution to cover and protect the circuit pattern. A method for manufacturing forming a circuit pattern on a substrate and forming a protective coating layer for covering and protecting the circuit pattern by applying a coating solution on the substrate. The circuit pattern may be securely attached to the substrate, and damage and deformation of the circuit pattern due to repeated bending or warping of the substrate may be prevented, ultimately improving operational reliability.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: April 17, 2018
    Assignee: Amogreentech Co., Ltd.
    Inventors: Jongsoo Kim, Jeong-Sang Yu, O-Chung Kwon, Jae-Sic Kim
  • Patent number: 9648753
    Abstract: The present invention relates to a method for manufacturing a flexible printed circuit board and a flexible printed circuit board manufactured by using the same. A circuit pattern is formed with a conductive paste on one surface of a base material, and the circuit pattern is sintered at a temperature of 290° C. to 420° C. to manufacture the flexible printed circuit board. As such, manufacturing costs can be reduced and productivity can be improved through a simple yet convenient process. Also, the circuit pattern is formed without a plating process, such that the problem of circuit pattern separation occurring during the plating process can be addressed and product reliability can be improved.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: May 9, 2017
    Assignee: AMOGREENTECH CO., LTD.
    Inventors: Jong-Soo Kim, Kyung-Hoon Lee, Jeong-Sang Yu, O-Chung Kwon
  • Publication number: 20160270242
    Abstract: Disclosed are a flexible printed circuit board and a method of manufacturing the same, wherein a deposition seed layer is formed on a substrate, a circuit cover layer having a circuit pattern groove in the shape of a circuit pattern is formed on the deposition seed layer, the circuit pattern groove is plated with a circuit plating layer, followed by etching, thus forming a circuit pattern, thereby realizing low-resistance characteristics, reducing manufacturing costs through a simple and easy manufacturing process, and increasing productivity.
    Type: Application
    Filed: November 14, 2014
    Publication date: September 15, 2016
    Inventors: Jong-Soo KIM, Jeong-Sang YU, O-Chung KWON, Sung-Baek DAN
  • Publication number: 20160165721
    Abstract: A method for manufacturing a flexible printed circuit board includes preliminarily thermally deforming s substrate through heating, forming a circuit pattern with a conductive paste on the preliminarily thermally deformed substrate, and firing the circuit pattern. A flexible printed circuit board includes a substrate, and a circuit pattern formed by firing a conductive paste on a first surface of the substrate. The substrate is preliminarily thermally deformed and, thus, a shrinkage variation thereof before and after firing the conductive paste is zero. Dimensional stability when firing the circuit pattern printed with the conductive paste can be ensured, deterioration of adhesion between the circuit pattern and the substrate attributable to film deformation upon firing can be prevented, and stable adhesion of the circuit pattern can be maintained even after firing.
    Type: Application
    Filed: April 11, 2014
    Publication date: June 9, 2016
    Inventors: O-Chung Kwon, Jeong-Sang Yu, Jae-Sic Kim, Yong-Il Kim, Hyun-Soo Jang
  • Publication number: 20160135285
    Abstract: A flexible printed circuit board includes a substrate, a circuit pattern formed on the substrate, and a protective coating layer formed on the substrate by applying and curing a coating solution to cover and protect the circuit pattern. A method for manufacturing forming a circuit pattern on a substrate and forming a protective coating layer for covering and protecting the circuit pattern by applying a coating solution on the substrate. The circuit pattern may be securely attached to the substrate, and damage and deformation of the circuit pattern due to repeated bending or warping of the substrate may be prevented, ultimately improving operational reliability.
    Type: Application
    Filed: April 30, 2014
    Publication date: May 12, 2016
    Inventors: Jongsoo Kim, Jeong-Sang Yu, O-Chung Kwon, Jae-Sic Kim
  • Publication number: 20150359106
    Abstract: The present invention relates to a method for manufacturing a flexible printed circuit board and a flexible printed circuit board manufactured by using the same. A circuit pattern is formed with a conductive paste on one surface of a base material, and the circuit pattern is sintered at a temperature of 290° C. to 420° C. to manufacture the flexible printed circuit board. As such, manufacturing costs can be reduced and productivity can be improved through a simple yet convenient process. Also, the circuit pattern is formed without a plating process, such that the problem of circuit pattern separation occurring during the plating process can be addressed and product reliability can be improved.
    Type: Application
    Filed: December 31, 2013
    Publication date: December 10, 2015
    Inventors: Jong-Soo KIM, Kyung-Hoon LEE, Jeong-Sang YU, O-Chung KWON