Patents by Inventor CHAN-SUL JOO

CHAN-SUL JOO 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: 11680321
    Abstract: A method for fabricating a semiconductor device, including the steps of: providing a substrate having an etch stop layer formed thereon; forming a preliminary stacked structure on the etch stop layer, the preliminary stacked structure including a lower sacrifice layer contacting the etch stop layer, a support layer, and an upper sacrifice layer; forming a hole penetrating the preliminary stacked structure and the etch stop layer; forming a conductive pattern in the hole; removing the upper sacrifice layer and a portion of the support layer; removing the lower sacrifice layer; forming a first conductive layer covering the conductive pattern; and forming a dielectric layer covering the first conductive layer, a remaining portion of the support layer, and the etch stop layer.
    Type: Grant
    Filed: February 24, 2022
    Date of Patent: June 20, 2023
    Assignee: XIA TAI XIN SEMICONDUCTOR (QING DAO) LTD.
    Inventors: Chan-Sul Joo, Jee-Hoon Kim
  • Patent number: 11572624
    Abstract: An apparatus for processing a substrate is provided. The apparatus comprises a processing chamber and a showerhead. The showerhead is in the processing chamber and has a plurality of first holes with a first size in a first zone of the showerhead, a plurality of second holes with a second hole size in a second zone of the showerhead, and a plurality of third holes with a third hole size in a third zone of the showerhead. The first hole size is different from the second hole size. The first zone is surrounded by the second zone. An area of the first zone is larger than an area of the second zone. The first hole size is different from the third hole size. The first zone is surrounded by the third zone, and an area of the first zone is larger than an area of the third zone.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: February 7, 2023
    Assignee: XIA TAI XIN SEMICONDUCTOR (QING DAO) LTD.
    Inventors: Chan-Sul Joo, Jee-Hoon Kim
  • Publication number: 20220178030
    Abstract: A method for fabricating a semiconductor device, including the steps of: providing a substrate having an etch stop layer formed thereon; forming a preliminary stacked structure on the etch stop layer, the preliminary stacked structure including a lower sacrifice layer contacting the etch stop layer, a support layer, and an upper sacrifice layer; forming a hole penetrating the preliminary stacked structure and the etch stop layer; forming a conductive pattern in the hole; removing the upper sacrifice layer and a portion of the support layer; removing the lower sacrifice layer; forming a first conductive layer covering the conductive pattern; and forming a dielectric layer covering the first conductive layer, a remaining portion of the support layer, and the etch stop layer.
    Type: Application
    Filed: February 24, 2022
    Publication date: June 9, 2022
    Inventors: CHAN-SUL JOO, JEE-HOON KIM
  • Patent number: 11286565
    Abstract: An apparatus for processing a substrate is provided. The apparatus comprises a processing chamber and a showerhead. The showerhead is in the processing chamber and has a plurality of first holes with a first size in a first zone of the showerhead and a plurality of second holes with a second hole size in a second zone of the showerhead. The first hole size is different from the second hole size. The first zone is surrounded by the second zone. An area of the first zone is larger than an area of the second zone.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: March 29, 2022
    Assignee: XIA TAI XIN SEMICONDUCTOR (QING DAO) LTD.
    Inventors: Chan-Sul Joo, Jee-Hoon Kim
  • Publication number: 20200216956
    Abstract: An apparatus for processing a substrate is provided. The apparatus comprises a processing chamber and a showerhead. The showerhead is in the processing chamber and has a plurality of first holes with a first size in a first zone of the showerhead, a plurality of second holes with a second hole size in a second zone of the showerhead, and a plurality of third holes with a third hole size in a third zone of the showerhead. The first hole size is different from the second hole size. The first zone is surrounded by the second zone. An area of the first zone is larger than an area of the second zone. The first hole size is different from the third hole size. The first zone is surrounded by the third zone, and an area of the first zone is larger than an area of the third zone.
    Type: Application
    Filed: December 10, 2019
    Publication date: July 9, 2020
    Inventors: CHAN-SUL JOO, JEE-HOON KIM
  • Publication number: 20200216957
    Abstract: An apparatus for processing a substrate is provided. The apparatus comprises a processing chamber and a showerhead. The showerhead is in the processing chamber and has a plurality of first holes with a first size in a first zone of the showerhead and a plurality of second holes with a second hole size in a second zone of the showerhead. The first hole size is different from the second hole size. The first zone is surrounded by the second zone. An area of the first zone is larger than an area of the second zone.
    Type: Application
    Filed: December 10, 2019
    Publication date: July 9, 2020
    Inventors: CHAN-SUL JOO, JEE-HOON KIM