Patents by Inventor Chul Young Ham

Chul Young Ham 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: 9876026
    Abstract: The present disclosure provides a method of manufacturing a semiconductor device with a controlled doped concentration of a channel film that is run-through a plurality of memory stacks. In one aspect of the present disclosure, the method may include forming a hole, forming a channel film on an inner surface of the hole, forming a buffer film on an inner surface of the channel film, forming a dopant supply film to fill the hole, and doping the channel film via a dopant diffusion from the dopant supply film into the channel film.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: January 23, 2018
    Assignee: SK Hynix Inc.
    Inventors: Hee Youl Lee, Chul Young Ham
  • Publication number: 20170012051
    Abstract: The present disclosure provides a method of manufacturing a semiconductor device with a controlled doped concentration of a channel film that is run-through a plurality of memory stacks. In one aspect of the present disclosure, the method may include forming a hole, forming a channel film on an inner surface of the hole, forming a buffer film on an inner surface of the channel film, forming a dopant supply film to fill the hole, and doping the channel film via a dopant diffusion from the dopant supply film into the channel film.
    Type: Application
    Filed: December 8, 2015
    Publication date: January 12, 2017
    Inventors: Hee Youl LEE, Chul Young HAM
  • Publication number: 20120074485
    Abstract: A nonvolatile memory device comprises a gate insulating layer, a floating gate and a dielectric layer sequentially formed over a semiconductor substrate, a capping layer formed over the dielectric layer, and a control gate formed over the capping layer, wherein the control gate includes nitrogen or carbon as an additive.
    Type: Application
    Filed: December 6, 2011
    Publication date: March 29, 2012
    Applicant: HYNIX SEMICONDUCTOR INC.
    Inventors: Chul Young Ham, Min Sik Jang, Sang Soo Lee
  • Publication number: 20110159674
    Abstract: A method of manufacturing nonvolatile memory devices comprises forming a plurality of floating gates spaced from each other over a semiconductor substrate, forming a dielectric layer on a surface of the floating gates, forming a capping layer on a surface of the dielectric layer, adding impurities to the capping layer, and forming a control gate over the capping layer containing the impurities.
    Type: Application
    Filed: December 17, 2010
    Publication date: June 30, 2011
    Applicant: HYNIX SEMICONDUCTOR INC.
    Inventors: Chul Young Ham, Min Sik Jang, Sang Soo Lee
  • Patent number: 7429519
    Abstract: A method of forming an isolation structure of a semiconductor device includes implanting dopants of a first type into a semiconductor substrate to form a doped region in the substrate. A mask layer is provided over the substrate and the doped region of the substrate. The mask layer is patterned to expose an isolation region of the substrate, the isolation region defining an active region, the isolation region and the active region being defined at least partly within the doped region. Dopants of a second type are implanted at an edge of the active region as defined by the isolation region. The isolation region of the semiconductor substrate is etched to form an isolation trench having a depth that extends below a depth of the doped region. Dopants of a third type are implanted on sidewalls of the trench in order to minimize the dopants of the second type provided on the sidewalls of the isolation trench from migrating away from the sidewalls.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: September 30, 2008
    Assignee: Hynix Semiconductor Inc.
    Inventors: Chul Young Ham, Noh Yeal Kwak
  • Publication number: 20080124894
    Abstract: A method of forming an isolation structure of a semiconductor device includes implanting dopants of a first type into a semiconductor substrate to form a doped region in the substrate. A mask layer is provided over the substrate and the doped region of the substrate. The mask layer is patterned to expose an isolation region of the substrate, the isolation region defining an active region, the isolation region and the active region being defined at least partly within the doped region. Dopants of a second type are implanted at an edge of the active region as defined by the isolation region. The isolation region of the semiconductor substrate is etched to form an isolation trench having a depth that extends below a depth of the doped region. Dopants of a third type are implanted on sidewalls of the trench in order to minimize the dopants of the second type provided on the sidewalls of the isolation trench from migrating away from the sidewalls.
    Type: Application
    Filed: December 21, 2006
    Publication date: May 29, 2008
    Applicant: Hynix Semiconductor Inc.
    Inventors: Chul Young Ham, Noh Yeal Kwak
  • Publication number: 20080003788
    Abstract: A method of manufacturing a semiconductor device includes the steps of forming a gate for a high voltage transistor on a semiconductor substrate, forming a Double Doped Drain (DDD) junction in the semiconductor substrate by means of an ion implantation process employing a DDD mask, and removing point defects, which have occurred in the DDD junction during the ion implantation process, by means of a Defect Recovery Anneal (DRA) process.
    Type: Application
    Filed: December 28, 2006
    Publication date: January 3, 2008
    Applicant: Hynix Semiconductor Inc.
    Inventors: Chul Young Ham, Noh Yeal Kwak