Patents by Inventor Ran-ju Jung

Ran-ju Jung 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: 20130252395
    Abstract: Example embodiments relate to a resistive random access memory (RRAM) and a method of manufacturing the RRAM. A RRAM according to example embodiments may include a lower electrode, which may be formed on a lower structure (e.g., substrate). A resistive layer may be formed on the lower electrode, wherein the resistive layer may include a transition metal dopant. An upper electrode may be formed on the resistive layer. Accordingly, the transition metal dopant may form a filament in the resistive layer that operates as a current path.
    Type: Application
    Filed: May 13, 2013
    Publication date: September 26, 2013
    Inventors: Sun-ae SEO, Young-soo PARK, Ran-Ju JUNG, Myoung-jae LEE, Dong-chul KIM, Seung-eon AHN
  • Patent number: 8476994
    Abstract: Provided is an electromechanical switch and a method of manufacturing the same. The electromechanical switch includes an elastic conductive layer that moves by the application of an electric field, wherein the elastic conductive layer includes at least one layer of graphene.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: July 2, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-chul Kim, Ran-ju Jung, Sun-ae Seo, Chang-won Lee, Hyun-jong Chung
  • Patent number: 8466461
    Abstract: Example embodiments relate to a resistive random access memory (RRAM) and a method of manufacturing the RRAM. A RRAM according to example embodiments may include a lower electrode, which may be formed on a lower structure (e.g., substrate). A resistive layer may be formed on the lower electrode, wherein the resistive layer may include a transition metal dopant. An upper electrode may be formed on the resistive layer. Accordingly, the transition metal dopant may form a filament in the resistive layer that operates as a current path.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: June 18, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sun-ae Seo, Young-soo Park, Ran-ju Jung, Myoung-jae Lee, Dong-chul Kim, Seung-eon Ahn
  • Patent number: 8350247
    Abstract: A resistive random access memory (RRAM) having a solid solution layer and a method of manufacturing the RRAM are provided. The RRAM includes a lower electrode, a solid solution layer on the lower electrode, a resistive layer on the solid solution layer, and an upper electrode on the resistive layer. The method of manufacturing the RRAM includes forming a lower electrode, forming a solid solution layer on the lower electrode, forming a resistive layer on the solid layer and forming an upper electrode on the resistive layer, wherein the RRAM is formed of a transition metal solid solution.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: January 8, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Myoung-jae Lee, Young-soo Park, Ran-ju Jung, Sun-ae Seo, Dong-chul Kim, Seung-eon Ahn
  • Patent number: 8274098
    Abstract: Provided are a field effect transistor, a logic circuit including the same and methods of manufacturing the same. The field effect transistor may include an ambipolar layer that includes a source region, a drain region, and a channel region between the source region and the drain region, wherein the source region, the drain region, and the channel region may be formed in a monolithic structure, a gate electrode on the channel region, and an insulating layer separating the gate electrode from the ambipolar layer, wherein the source region and the drain region have a width greater than that of the channel region in a second direction that crosses a first direction in which the source region and the drain region are connected to each other.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: September 25, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-jong Chung, Ran-ju Jung, Sun-ae Seo, Dong-chul Kim, Chang-won Lee
  • Patent number: 7994815
    Abstract: Provided is a cross-point latch and a method of operating the cross-point latch. The cross-point latch includes a signal line, two control lines crossing the signal line, and unipolar switches disposed at crossing points between the signal line and the control lines.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: August 9, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-jong Chung, Sun-ae Seo, Chang-won Lee, Dae-young Jeon, Ran-ju Jung, Dong-chul Kim, Ji-young Bae
  • Publication number: 20090251267
    Abstract: An inductor may include a conductive line including a material in which an electrical resistance varies depending on an electric field applied to the material and/or first and second electrodes electrically connected to first and second end portions of the conductive line, respectively. A method of operating an inductor may include applying current to a conductive line of the inductor. The conductive line may include a material in which an electrical resistance may vary depending on an electric field applied to the material. The current may be applied to the conductive line via first and second electrodes electrically connected to first and second end portions of the conductive line, respectively.
    Type: Application
    Filed: October 29, 2008
    Publication date: October 8, 2009
    Inventors: Dae-young Jeon, Dong-chul Kim, Sun ae Seo, Ran-ju Jung, Yun-sung Woo, Hyun-jong Chung
  • Publication number: 20090032795
    Abstract: A Schottky diode and a memory device including the same are provided. The Schottky diode includes a first metal layer and an Nb-oxide layer formed on the first metal layer.
    Type: Application
    Filed: February 15, 2008
    Publication date: February 5, 2009
    Inventors: Dong-chul Kim, Ran-ju Jung, Sun-ae Seo, Bae-ho Park, Chang-won Lee, Hyun-jong Chung, Jin-soo Kim
  • Publication number: 20090020399
    Abstract: Provided is an electromechanical switch and a method of manufacturing the same. The electromechanical switch includes an elastic conductive layer that moves by the application of an electric field, wherein the elastic conductive layer includes at least one layer of graphene.
    Type: Application
    Filed: October 31, 2007
    Publication date: January 22, 2009
    Inventors: Dong-chul Kim, Ran-ju Jung, Sun-ae Seo, Chang-won Lee, Hyun-jong Chung
  • Publication number: 20080312088
    Abstract: Provided are a field effect transistor, a logic circuit including the same and methods of manufacturing the same. The field effect transistor may include an ambipolar layer that includes a source region, a drain region, and a channel region between the source region and the drain region, wherein the source region, the drain region, and the channel region may be formed in a monolithic structure, a gate electrode on the channel region, and an insulating layer separating the gate electrode from the ambipolar layer, wherein the source region and the drain region have a width greater than that of the channel region in a second direction that crosses a first direction in which the source region and the drain region are connected to each other.
    Type: Application
    Filed: December 27, 2007
    Publication date: December 18, 2008
    Inventors: Hyun-jong Chung, Ran-ju Jung, Sun-ae Seo, Dong-chul Kim, Chang-won Lee
  • Publication number: 20080284481
    Abstract: Provided is a cross-point latch and a method of operating the cross-point latch. The cross-point latch includes a signal line, two control lines crossing the signal line, and unipolar switches disposed at crossing points between the signal line and the control lines.
    Type: Application
    Filed: September 21, 2007
    Publication date: November 20, 2008
    Inventors: Hyun-Jong Chung, Sun-ao Seo, Chang-won Lee, Dao-young Jeon, Ran-ju Jung, Dong-chul Kim, Ji-young Bae
  • Publication number: 20080121864
    Abstract: Example embodiments relate to a resistive random access memory (RRAM) and a method of manufacturing the RRAM. A RRAM according to example embodiments may include a lower electrode, which may be formed on a lower structure (e.g., substrate). A resistive layer may be formed on the lower electrode, wherein the resistive layer may include a transition metal dopant. An upper electrode may be formed on the resistive layer. Accordingly, the transition metal dopant may form a filament in the resistive layer that operates as a current path.
    Type: Application
    Filed: November 28, 2007
    Publication date: May 29, 2008
    Inventors: Sun-ae Seo, Young-soo Park, Ran-ju Jung, Myoung-jae Lee, Dong-chul Kim, Seung-eon Ahn
  • Publication number: 20080116438
    Abstract: A resistive random access memory (RRAM) having a solid solution layer and a method of manufacturing the RRAM are provided. The RRAM includes a lower electrode, a solid solution layer on the lower electrode, a resistive layer on the solid solution layer, and an upper electrode on the resistive layer. The method of manufacturing the RRAM includes forming a lower electrode, forming a solid solution layer on the lower electrode, forming a resistive layer on the solid layer and forming an upper electrode on the resistive layer, wherein the RRAM is formed of a transition metal solid solution.
    Type: Application
    Filed: November 15, 2007
    Publication date: May 22, 2008
    Inventors: Myoung-jae Lee, Young-soo Park, Ran-ju Jung, Sun-ae Seo, Dong-chul Kim, Seung-eon Ahn
  • Publication number: 20070148933
    Abstract: A method of fabricating a phase-change random-access memory (RAM) device includes forming a chalcogenide material on a substrate. A bottom contact is formed under the chalcogenide material, the bottom contact comprising TiAlN. Forming the bottom contact includes performing an atomic layer deposition (ALD) process, the ALD process including introducing an NH3 source gas into a chamber in which the ALD process is being carried out, a flow amount of the NH3 gas being such that the resulting bottom contact has a chlorine content of less than 1 at %. The bottom contact can include TiAlN having a crystallinity in terms of full-width half-maximum (FWHM) of less than about 0.65 degree.
    Type: Application
    Filed: August 30, 2006
    Publication date: June 28, 2007
    Inventors: Jin-Il Lee, Choong-Man Lee, Sung-Lae Cho, Ran-Ju Jung, Sang-Yeol Kang, Young-Lim Park
  • Publication number: 20050263076
    Abstract: Provided is an atomic layer deposition (ALD) apparatus that has an improved reactor and sample holder. The apparatus includes a reactor including an upper plate and a lower plate and accommodating a reaction chamber; and a sample holder supporting a sample loaded into the reaction chamber. The upper plate includes a bottom having a predetermined depth and a sidewall surrounding the bottom, and the bottom and the sidewall of the upper plate define the reaction chamber. At least one gas inlet and at least one gas outlet are installed at the sidewall of the upper plate. The sample holder includes a body and a cylindrical support member. The body has a support plate and a cylindrical support skirt. The sample is mounted on one side of the support plate and the support skirt extends from the other side of the support plate. Also, the support member is inserted in the body and supports the sample. The support plate includes a window that exposes the surface of the sample on which a thin layer is grown.
    Type: Application
    Filed: November 9, 2004
    Publication date: December 1, 2005
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ran-ju Jung, Yeon-taek Ryu
  • Publication number: 20050000427
    Abstract: A gas supplying apparatus for atomic layer deposition, which generates a source gas by vaporizing a powder source and supplies the source gas into a reaction chamber of an atomic layer deposition apparatus, is provided.
    Type: Application
    Filed: April 14, 2004
    Publication date: January 6, 2005
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jae-cheol Lee, Ran-ju Jung, Youn-taek Ryu
  • Publication number: 20040266011
    Abstract: Provided is an in-situ analysis method for an atomic layer deposition (ALD) process. The provided method includes transferring a substrate to a reaction chamber in a vacuum container, depositing an atomic layer on the upper surface of the substrate, and analyzing the state of the atomic layer to determine the quality of the atomic layer in real time. Using the method decreases failure and the cost for additional analysis.
    Type: Application
    Filed: June 24, 2004
    Publication date: December 30, 2004
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jae-cheol Lee, Chang-bin Lim, Ran-ju Jung