Patents by Inventor Chang-Goo Lee

Chang-Goo 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: 11953552
    Abstract: The present disclosure relates to a system and apparatus for monitoring a partial discharge in a switchboard, including a plurality of partial discharge sensors provided in each of a plurality of switchboards to acquire partial discharge data generated in at least one switchboard, and a noise sensor provided in any one of the plurality of switchboards to acquire noise data to be differentiated from the partial discharge data acquired from the at least one partial discharge sensor, and it can be applied to other exemplary embodiments.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: April 9, 2024
    Assignee: LS ELECTRIC CO., LTD.
    Inventors: Chang Hwan Jin, Jong Ung Choi, Hyun Ho Kwon, Gwang Goo Kang, Jin Ho Lee
  • Patent number: 8574820
    Abstract: A method for fabricating a semiconductor device includes: forming a first photoresist pattern with a first opening over an etch target layer; forming a second photoresist pattern with a plurality of second openings over the first photoresist pattern; and forming a plurality of patterns by etching the etch target layer by using the first photoresist pattern and the second photoresist pattern as an etch barrier.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: November 5, 2013
    Assignee: Hynix Semiconductor Inc.
    Inventor: Chang-Goo Lee
  • Patent number: 8138090
    Abstract: A method for forming fine patterns in a semiconductor device includes forming a first hard mask layer over an etch target layer, forming first etch mask patterns having negative slopes over the first hard mask layer, thereby forming a resultant structure, forming a first material layer for a second etch mask over the resultant structure, performing a planarization process until the first etch mask patterns are exposed to form second etch mask patterns filled in spaces between the spacers, removing the spacers, and etching the first hard mask layer and the etch target layer using the first etch mask patterns and the second etch mask patterns.
    Type: Grant
    Filed: December 26, 2007
    Date of Patent: March 20, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventors: Sung-Yoon Cho, Chang-Goo Lee
  • Patent number: 8119512
    Abstract: A method for fabricating a semiconductor device includes forming an interlayer dielectric layer over a substrate; forming a dual storage node contact plug to be buried in the interlayer dielectric layer, forming a first damascene pattern to isolate the dual storage node contact plug, forming a protective layer pattern inside the first damascene pattern, etching the interlayer dielectric layer to form a second damascene pattern to be coupled to the first damascene pattern, and forming bit lines inside the first and second damascene patterns.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: February 21, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventor: Chang-Goo Lee
  • Publication number: 20110223541
    Abstract: A method for fabricating a semiconductor device includes: forming a first photoresist pattern with a first opening over an etch target layer; forming a second photoresist pattern with a plurality of second openings over the first photoresist pattern; and forming a plurality of patterns by etching the etch target layer by using the first photoresist pattern and the second photoresist pattern as an etch barrier.
    Type: Application
    Filed: November 2, 2010
    Publication date: September 15, 2011
    Inventor: Chang-Goo LEE
  • Publication number: 20080272431
    Abstract: A varying-width recess gate structure having a varying-width recess formed in a semiconductor device can sufficiently increase the channel length of the transistor having a gate formed in the varying-width recess, thereby effectively reducing the current leakage and improving the refresh characteristics. In the method of manufacturing the recess gate structure, etching is performed twice or more, so as to form a gate recess having varying width in the substrate, and a gate is formed in the gate recess.
    Type: Application
    Filed: July 17, 2008
    Publication date: November 6, 2008
    Inventors: Jong Man KIM, Chang Goo LEE, Jong Sik KIM, Se Ra WON
  • Publication number: 20080233750
    Abstract: A method for forming fine patterns in a semiconductor device includes forming a first hard mask layer over an etch target layer, forming first etch mask patterns having negative slopes over the first hard mask layer, thereby forming a resultant structure, forming a first material layer for a second etch mask over the resultant structure, performing a planarization process until the first etch mask patterns are exposed to form second etch mask patterns filled in spaces between the spacers, removing the spacers, and etching the first hard mask layer and the etch target layer using the first etch mask patterns and the second etch mask patterns.
    Type: Application
    Filed: December 26, 2007
    Publication date: September 25, 2008
    Inventors: Sung-Yoon Cho, Chang-Goo Lee
  • Patent number: 7413969
    Abstract: A varying-width recess gate structure having a varying-width recess formed in a semiconductor device can sufficiently increase the channel length of the transistor having a gate formed in the varying-width recess, thereby effectively reducing the current leakage and improving the refresh characteristics. In the method of manufacturing the recess gate structure, etching is performed twice or more, so as to form a gate recess having varying width in the substrate, and a gate is formed in the gate recess.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: August 19, 2008
    Assignee: Hynix Semiconductor Inc.
    Inventors: Jong Man Kim, Chang Goo Lee, Jong Sik Kim, Se Ra Won
  • Publication number: 20070202670
    Abstract: A method for fabricating a semiconductor device includes: forming a gate material over a substrate; etching the gate material to form gate patterns each including a portion of the gate material remaining over the substrate; performing a halo ion-implantation process on a portion of the substrate where a bit line contacts; forming sidewall spacers of the gate patterns; and etching the remaining portion of the gate material to expose the substrate using the sidewall spacers as a mask.
    Type: Application
    Filed: December 12, 2006
    Publication date: August 30, 2007
    Inventor: Chang-Goo Lee
  • Patent number: 6949431
    Abstract: Disclosed is a method for fabricating a cylinder type capacitor in a semiconductor device. Particularly, the cylinder type capacitor is fabricated through performing a series of processes. Among the serial processes, a cleaning process for removing a photosensitive layer remaining in undesired regions is performed before an etch-back process for forming bottom electrodes with use of the photosensitive layer as an etch mask. Especially, the cleaning process proceeds by employing one of a dry etching process and a wet etching process.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: September 27, 2005
    Assignee: Hynix Semiconductor Inc.
    Inventor: Chang-Goo Lee
  • Publication number: 20050142869
    Abstract: Disclosed is a method for fabricating a cylinder type capacitor in a semiconductor device. Particularly, the cylinder type capacitor is fabricated through performing a series of processes. Among the serial processes, a cleaning process for removing a photosensitive layer remaining in undesired regions is performed before an etch-back process for forming bottom electrodes with use of the photosensitive layer as an etch mask. Especially, the cleaning process proceeds by employing one of a dry etching process and a wet etching process.
    Type: Application
    Filed: June 30, 2004
    Publication date: June 30, 2005
    Applicant: Hynix Semiconductor Inc.
    Inventor: Chang-Goo Lee