Patents by Inventor Ki-Seon Park

Ki-Seon Park 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: 20130037896
    Abstract: A method for fabricating a semiconductor device includes forming a magnetic tunnel junction (MTJ) element on a substrate, forming a first capping layer along the shape of the MTJ element, forming an insulating layer on the first capping layer, forming a trench exposing a portion of the first capping layer above the MTJ element by selectively etching the insulating layer, forming a second capping layer on sidewalls of the trench, removing the exposed portion of the first capping layer using the second capping layer as an etching mask to expose an upper surface of the MTJ element, and forming a conductive layer in the trench, wherein the conductive layer contacts the upper surface of the MTJ element.
    Type: Application
    Filed: June 21, 2012
    Publication date: February 14, 2013
    Inventors: Jung Woo Park, Gil Jae Park, Ki Seon Park
  • Publication number: 20130032910
    Abstract: A magnetic memory device includes a first fixing layer, a first tunnel barrier coupled to the first fixing layer, a free layer coupled to the first tunnel barrier and having a stacked structure including a first ferromagnetic layer, an oxide tunnel spacer, and a second ferromagnetic layer, a second tunnel barrier coupled to the free layer, and a second fixing layer coupled to the second tunnel barrier.
    Type: Application
    Filed: October 3, 2011
    Publication date: February 7, 2013
    Inventors: Dong Ha Jung, Ki Seon Park, Guk Cheon Kim
  • Publication number: 20130032911
    Abstract: A vertical magnetic memory device includes a pinned layer including a plurality of first ferromagnetic layers that are alternately stacked with at least one first spacer, wherein the pinned layer is configured to have a vertical magnetization, a free layer including a plurality of second ferromagnetic layers that are alternately stacked with at least one second spacer, and a tunnel barrier coupled between the pinned layer and the free layer.
    Type: Application
    Filed: October 3, 2011
    Publication date: February 7, 2013
    Inventors: Dong Ha JUNG, Ki Seon PARK, Su Ryun MIN
  • Publication number: 20110204430
    Abstract: A nonvolatile memory device and a method of fabricating the same is provided to prevent charges stored in a charge trap layer from moving to neighboring memory cells. The method of fabricating a nonvolatile memory device, includes forming a first dielectric layer on a semiconductor substrate in which active regions are defined by isolation layers, forming a charge trap layer on the first dielectric layer, removing the first dielectric layer and the charge trap layer over the isolation layers, forming a second dielectric layer on the isolation layers including the charge trap layer, and forming a conductive layer on the second dielectric layer.
    Type: Application
    Filed: April 29, 2011
    Publication date: August 25, 2011
    Applicant: HYNIX SEMICONDUCTOR INC.
    Inventors: Se Jun KIM, Eun Seok CHOI, Kyoung Hwan PARK, Hyun Seung YOO, Myung Shik LEE, Young Ok HONG, Jung Ryul AHN, Yong Top KIM, Kyung Pil HWANG, Won Sic WOO, Jae Young PARK, Ki Hong LEE, Ki Seon PARK, Moon Sig JOO
  • Patent number: 7981786
    Abstract: A method of fabricating a non-volatile memory device having a charge trapping layer includes forming a tunneling layer, a charge trapping layer, a blocking layer and a control gate electrode layer over a substrate, forming a mask layer pattern on the control gate electrode layer, performing an etching process using the mask layer pattern as an etching mask to remove an exposed portion of the control gate electrode layer, wherein the etching process is performed as excessive etching to remove the charge trapping layer by a specified thickness, forming an insulating layer for blocking charges from moving on the control gate electrode layer and the mask layer pattern, performing anisotropic etching on the insulating layer to form an insulating layer pattern on a sidewall of the control gate electrode layer and a partial upper sidewall of the blocking layer, and performing an etching process on the blocking layer exposed by the anisotropic etching, wherein the etching process is performed as excessive etching to
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: July 19, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventors: Moon Sig Joo, Seung Ho Pyi, Ki Seon Park, Heung Jae Cho, Yong Top Kim
  • Patent number: 7955960
    Abstract: A nonvolatile memory device and a method of fabricating the same is provided to prevent charges stored in a charge trap layer from moving to neighboring memory cells. The method of fabricating a nonvolatile memory device, includes forming a first dielectric layer on a semiconductor substrate in which active regions are defined by isolation layers, forming a charge trap layer on the first dielectric layer, removing the first dielectric layer and the charge trap layer over the isolation layers, forming a second dielectric layer on the isolation layers including the charge trap layer, and forming a conductive layer on the second dielectric layer.
    Type: Grant
    Filed: March 21, 2008
    Date of Patent: June 7, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventors: Se Jun Kim, Eun Seok Choi, Kyoung Hwan Park, Hyun Seung Yoo, Myung Shik Lee, Young Ok Hong, Jung Ryul Ahn, Yong Top Kim, Kyung Pil Hwang, Won Sic Woo, Jae Young Park, Ki Hong Lee, Ki Seon Park, Moon Sig Joo
  • Patent number: 7919371
    Abstract: A method for fabricating a non-volatile memory device with a charge trapping layer wherein a tunneling layer, a charge trapping layer, a blocking layer, and a control gate electrode are formed on a semiconductor substrate. A temperature of the control gate electrode is increased by applying a magnetic field to the control gate electrode. The blocking layer is densified by allowing the increased temperature to be transferred to the blocking layer contacting the control gate electrode.
    Type: Grant
    Filed: June 16, 2008
    Date of Patent: April 5, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventors: Ki Hong Lee, Seung Ho Pyi, Ki Seon Park
  • Patent number: 7915120
    Abstract: Provided is a method of fabricating a non-volatile semiconductor device. The method includes: forming a first hard mask layer over a substrate; etching the first hard mask layer and the substrate to form a plurality of isolation trenches extending in parallel to one another in a first direction; burying a dielectric layer in the isolation trenches to form a isolation layer; forming a plurality of floating gate mask patterns extending in parallel to one another in a second direction intersecting with the first direction over a resulting structure where the isolation layer is formed; etching the first hard mask layer by using the floating gate mask patterns as an etch barrier to form a plurality of island-shaped floating gate electrode trenches; and burying a conductive layer in the floating gate electrode trenches to form a plurality of island-shaped floating gate electrodes.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: March 29, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventors: Jung-Woo Park, Jin-Ki Jung, Kwon Hong, Ki-Seon Park
  • Patent number: 7835134
    Abstract: A capacitor includes a lower electrode, a dielectric structure over the lower electrode, the dielectric structure including at least one crystallized zirconium oxide (ZrO2) layer and at least one amorphous aluminum oxide (Al2O3) layer, and an upper electrode formed over the dielectric structure. A method for fabricating a capacitor includes forming a lower electrode over a certain structure, forming a dielectric structure including at least one crystallized zirconium oxide (ZrO2) layer and at least one amorphous aluminum oxide (Al2O3) layer over the lower electrode, and forming an upper electrode over the dielectric structure.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: November 16, 2010
    Assignee: Hynix Semiconductor Inc.
    Inventors: Deok-Sin Kil, Han-Sang Song, Seung-Jin Yeom, Ki-Seon Park, Jae-Sung Roh
  • Publication number: 20100240188
    Abstract: A method for fabricating a capacitor includes: forming a storage node contact plug over a substrate; forming an insulation layer having an opening exposing a surface of the storage node contact plug over the storage contact plug; forming a conductive layer for a storage node over the insulation layer and the exposed surface of the storage node contact plug through two steps performed at different temperatures; performing an isolation process to isolate parts of the conductive layer; and sequentially forming a dielectric layer and a plate electrode over the isolated conductive layer.
    Type: Application
    Filed: June 4, 2010
    Publication date: September 23, 2010
    Inventors: Jin-Hyock KIM, Seung-Jin Yeom, Ki-Seon Park, Han-Sang Song, Deok-Sin Kil, Jae-Sung Roh
  • Patent number: 7786521
    Abstract: A semiconductor device with a dielectric structure and a method for fabricating the same are provided. A capacitor in the semiconductor device includes: a bottom electrode formed on a substrate; a first dielectric layer made of titanium dioxide (TiO2) in rutile phase and formed on the bottom electrode; and an upper electrode formed on the first dielectric layer.
    Type: Grant
    Filed: January 26, 2009
    Date of Patent: August 31, 2010
    Assignee: Hynix Semiconductor Inc.
    Inventors: Ki-Seon Park, Jae-Sung Roh
  • Patent number: 7772132
    Abstract: A method for forming a zirconium oxide (ZrO2) layer on a substrate in a chamber includes controlling a temperature of the substrate; and repeating a unit cycle of an atomic layer deposition (ALD) method. The unit cycle includes supplying a zirconium (Zr) source into a chamber, parts of the Zr source being adsorbed into a surface of the substrate; purging non-adsorbed parts of the Zr source remaining inside the chamber; supplying a reaction gas for reacting with the adsorbed parts of the Zr source; and purging non-reacted parts of the reaction gas remaining inside the chamber and reaction byproducts, wherein the temperature of the substrate and a concentration of the reaction gas are controlled such that the ZrO2 layer is formed with a tetragonal structure.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: August 10, 2010
    Assignee: Hynix Semiconductor, Inc.
    Inventors: Deok-Sin Kil, Han-Sang Song, Seung-Jin Yeom, Ki-Seon Park, Jae-Sung Roh, Jin-Hyock Kim
  • Patent number: 7754577
    Abstract: A method for fabricating a capacitor includes: forming a storage node contact plug over a substrate; forming an insulation layer having an opening exposing a surface of the storage node contact plug over the storage contact plug; forming a conductive layer for a storage node over the insulation layer and the exposed surface of the storage node contact plug through two steps performed at different temperatures; performing an isolation process to isolate parts of the conductive layer; and sequentially forming a dielectric layer and a plate electrode over the isolated conductive layer.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: July 13, 2010
    Assignee: Hynix Semiconductor, Inc.
    Inventors: Jin-Hyock Kim, Seung-Jin Yeom, Ki-Seon Park, Han-Sang Song, Deok-Sin Kil, Jae-Sung Roh
  • Publication number: 20100099243
    Abstract: A method for forming a diode of a phase change random access memory device includes preparing a semiconductor substrate having a dopant area formed thereon. An insulating layer on the semiconductor substrate is formed and a contact hole is formed by etching a part of the insulating layer such that a specific region of the dopant area is exposed. A silicon layer doped with a first-type dopant is formed in the contact hole. A part of the silicon layer is doped with a second-type dopant source gas through a gas cluster ion beam process.
    Type: Application
    Filed: June 29, 2009
    Publication date: April 22, 2010
    Inventors: Sun Hwan Hwang, Ki Seon Park, Ki Hong Lee
  • Publication number: 20100062581
    Abstract: Provided is a method of fabricating a non-volatile semiconductor device. The method includes: forming a first hard mask layer over a substrate; etching the first hard mask layer and the substrate to form a plurality of isolation trenches extending in parallel to one another in a first direction; burying a dielectric layer in the isolation trenches to form a isolation layer; forming a plurality of floating gate mask patterns extending in parallel to one another in a second direction intersecting with the first direction over a resulting structure where the isolation layer is formed; etching the first hard mask layer by using the floating gate mask patterns as an etch barrier to form a plurality of island-shaped floating gate electrode trenches; and burying a conductive layer in the floating gate electrode trenches to form a plurality of island-shaped floating gate electrodes.
    Type: Application
    Filed: April 29, 2009
    Publication date: March 11, 2010
    Applicant: Hynix Semiconductor Inc.
    Inventors: Jung-Woo PARK, Jin-Ki JUNG, Kwon HONG, Ki-Seon PARK
  • Patent number: 7670903
    Abstract: A method for fabricating a cylindrical capacitor. The method includes forming an isolation structure including an interlayer on a substrate, the substrate having a plurality of contact plugs formed therein, forming a plurality of opening regions by etching the isolation structure, thereby exposing selected portions of the contact plugs, forming storage nodes on a surface of the opening regions, etching selected portions of the isolation structure to form a patterned interlayer that encompasses selected portions of the storage nodes, thereby supporting the storage nodes, removing remaining portions of the isolation structure, and removing the patterned interlayer to expose inner and outer walls of the storage nodes.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: March 2, 2010
    Assignee: Hynix Semiconductor, Inc.
    Inventors: Ki-Seon Park, Jae-Sung Roh, Deok-Sin Kil, Han-Sang Song, Seung-Jin Yeom, Jin-Hyock Kim, Kee-Jeung Lee
  • Publication number: 20100014212
    Abstract: A capacitor includes a lower electrode, a dielectric structure over the lower electrode, the dielectric structure including at least one crystallized zirconium oxide ZrO2) layer and at least one amorphous aluminum oxide (Al2O3) layer, and an upper electrode formed over the dielectric structure. A method for fabricating a capacitor includes forming a lower electrode over a certain structure, forming a dielectric structure including at least one crystallized zirconium oxide (ZrO2) layer and at least one amorphous aluminum oxide (Al2O3) layer over the lower electrode, and forming an upper electrode over the dielectric structure.
    Type: Application
    Filed: September 29, 2009
    Publication date: January 21, 2010
    Inventors: Deok-Sin Kil, Han-Sang Song, Seung-Jin Yeom, Ki-Seon Park, Jae-Sung Roh
  • Patent number: 7629221
    Abstract: Disclosed is a method for forming a capacitor of a semiconductor device. In such a method, a mold insulating layer is formed on an insulating interlayer provided with a storage node plug, and the mold insulating layer is etched to form a hole through which the storage node plug is exposed. Next, a metal storage electrode with an interposed WN layer is formed on a hole surface including the exposed storage node plug and the mold insulating layer is removed. Finally, a dielectric layer and a plate electrode are formed in order on the metal storage electrode.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: December 8, 2009
    Assignee: Hynix Semiconductor Inc.
    Inventors: Ki Seon Park, Jae Sung Roh, Hyun Chul Sohn
  • Patent number: 7616426
    Abstract: A capacitor includes a lower electrode, a dielectric structure over the lower electrode, the dielectric structure including at least one crystallized zirconium oxide (ZrO2) layer and at least one amorphous aluminum oxide (Al2O3) layer, and an upper electrode formed over the dielectric structure. A method for fabricating a capacitor includes forming a lower electrode over a certain structure, forming a dielectric structure including at least one crystallized zirconium oxide (ZrO2) layer and at least one amorphous aluminum oxide (Al2O3) layer over the lower electrode, and forming an upper electrode over the dielectric structure.
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: November 10, 2009
    Assignee: Hynix Semiconductor Inc.
    Inventors: Deok-Sin Kil, Han-Sang Song, Seung-Jin Yeom, Ki-Seon Park, Jae-Sung Roh
  • Publication number: 20090163013
    Abstract: Provided is a method for forming a gate of a non-volatile memory device. A tunneling layer, a charge trapping layer, a blocking layer, and a control gate layer are formed on a semiconductor substrate. A hard mask is formed on the control gate layer. The hard mask defines a region on which a gate is formed. A gate pattern is formed by etching the control gate layer, the blocking layer, the charge trapping layer, and the tunneling layer. A damage compensation layer on a side of the gate pattern is formed using ultra low pressure plasma of a pressure range from approximately 1 mT to approximately 100 mT.
    Type: Application
    Filed: June 2, 2008
    Publication date: June 25, 2009
    Applicant: HYNIX SEMICONDUCTOR INC.
    Inventors: Seok Pyo Song, Dong Sun Sheen, Seung Ho Pyi, Ki Seon Park, Sun Hwan Hwang, Mi Ri Lee, Gil Jae Park