Patents by Inventor Dong-joon Ma

Dong-joon Ma 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: 7252716
    Abstract: A gas injection apparatus for injecting a reactive gas into a reaction chamber of a semiconductor processing system includes an injector in contact with an inner surface of a wall of the reaction chamber. The injector has a plurality of nozzles through which the reactive gas is injected into the reaction chamber. A gas inlet penetrates the wall of the reaction chamber. A manifold is disposed between the wall of the reaction chamber and the injector, and supplies the reactive gas flowing through the gas inlet to the nozzles. Gas channels in the manifold are arranged on a plurality of levels to equalize the lengths of gas paths connecting the gas inlet to each of the plurality of nozzles. This configuration makes the flow rate of reactive gas supplied through each of the plurality of nozzles to the reaction chamber uniform.
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: August 7, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tae-wan Kim, Yuri Nikolaevich Tolmachev, Dong-joon Ma, Sergiy Yakovlevich Navala
  • Patent number: 7210424
    Abstract: A high-density plasma processing apparatus includes a processing chamber, having a susceptor for supporting an object to be processed positioned therein and a dielectric window positioned on the processing chamber to form an upper surface of the processing chamber. A reaction gas injection device injects a reaction gas into an interior of the processing chamber. An inductively coupled plasma (ICP) antenna, which is installed on a center of the dielectric window, transfers radio frequency (RF) power from an RF power supply to the interior of the processing chamber. A waveguide guides a microwave generated by a microwave generator. A circular radiative tube, which is installed on the dielectric window around the ICP antenna and is connected to the waveguide, radiates a microwave toward the interior of the processing chamber via a plurality of slots formed through a bottom wall of the radiative tube.
    Type: Grant
    Filed: May 12, 2004
    Date of Patent: May 1, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yuri Nikolaevich Tolmachev, Sergiy Yakovlevich Navala, Dong-joon Ma, Dae-il Kim
  • Patent number: 7170777
    Abstract: A phase change memory device and a method of operating the same are provided. The phase change memory device may include a plurality of unit cells arranged in a matrix composed of rows and columns; a plurality of program bit lines and read bit lines arranged in rows, each of the program and read bit lines having a row selection transistor formed at one end thereof; and a plurality of program word lines and read word lines arranged in columns, each of the program and read word lines having a column selection transistor formed at one end thereof. Each of the unit cells may include a phase change resistor and an exothermal resistor used to heat the phase change resistor.
    Type: Grant
    Filed: August 1, 2005
    Date of Patent: January 30, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-jun Choi, Jung-hyun Lee, Dong-joon Ma, Wan-jun Park, Young-soo Park
  • Patent number: 7052583
    Abstract: A magnetron cathode and a sputtering apparatus including the same are provided. The magnetron cathode includes three or more magnet units, each of which comprises a single magnet or a plurality of magnets having the same poles facing toward the same direction, wherein one magnet unit is disposed around the outer circumference of another magnet unit and adjacent magnet units have opposite poles facing toward the same direction. Uniform magnetic field distribution is obtained. Therefore, the erosion profile of a target is wide and uniform.
    Type: Grant
    Filed: January 13, 2004
    Date of Patent: May 30, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sergiy Yakovlevich Navala, Yuri Nikolaevich Tolmachev, Dong-joon Ma, Tae-wan Kim
  • Patent number: 7053448
    Abstract: A SONOS type memory includes a semiconductor substrate, first and second impurity regions in the semiconductor substrate doped with impurity ions of a predetermined conductivity, separated a predetermined distance from each other, a channel region between the first and second impurity regions, and a data storage type stack on the semiconductor substrate between the first and second impurity regions. The data storage type stack includes a tunneling oxide layer, a memory node layer for storing data, a blocking oxide layer, and an electrode layer, which are sequentially formed. A dielectric constant of the memory node layer is higher than dielectric constants of the tunneling and the blocking oxide layers, and a band offset of the memory node layer is lower than band offsets of the tunneling and the blocking oxide layers. The tunneling oxide layer and the blocking oxide layer are high dielectric insulating layers.
    Type: Grant
    Filed: March 3, 2005
    Date of Patent: May 30, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-hun Jeon, Chung-woo Kim, Dong-joon Ma, Sung-kyu Choi
  • Publication number: 20060092694
    Abstract: A phase change memory device and a method of operating the same are provided. The phase change memory device may include a plurality of unit cells arranged in a matrix composed of rows and columns; a plurality of program bit lines and read bit lines arranged in rows, each of the program and read bit lines having a row selection transistor formed at one end thereof; and a plurality of program word lines and read word lines arranged in columns, each of the program and read word lines having a column selection transistor formed at one end thereof. Each of the unit cells may include a phase change resistor and an exothermal resistor used to heat the phase change resistor.
    Type: Application
    Filed: August 1, 2005
    Publication date: May 4, 2006
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Sang-jun Choi, Jung-hyun Lee, Dong-joon Ma, Wan-jun Park, Young-soo Park
  • Patent number: 6966952
    Abstract: A deposition apparatus of depositing deposition material on a wafer in a vacuum chamber includes a deposition boat installed in the vacuum chamber to vaporize the deposition material, a wafer guide on which the wafer is loaded, the wafer guide having a rotational member rotating together with the wafer, a wafer-rotation device rotating the rotational member when the wafer guide approaches, and a wafer-transfer device reciprocating the wafer guide between an inlet of the vacuum chamber, the deposition boat and the wafer-rotation device.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: November 22, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-eal Kim, Sang-jun Choi, Dong-joon Ma
  • Publication number: 20050205920
    Abstract: A SONOS type memory includes a semiconductor substrate, first and second impurity regions in the semiconductor substrate doped with impurity ions of a predetermined conductivity, separated a predetermined distance from each other, a channel region between the first and second impurity regions, and a data storage type stack on the semiconductor substrate between the first and second impurity regions. The data storage type stack includes a tunneling oxide layer, a memory node layer for storing data, a blocking oxide layer, and an electrode layer, which are sequentially formed. A dielectric constant of the memory node layer is higher than dielectric constants of the tunneling and the blocking oxide layers, and a band offset of the memory node layer is lower than band offsets of the tunneling and the blocking oxide layers. The tunneling oxide layer and the blocking oxide layer are high dielectric insulating layers.
    Type: Application
    Filed: March 3, 2005
    Publication date: September 22, 2005
    Inventors: Sang-hun Jeon, Chung-woo Kim, Dong-joon Ma, Sung-kyu Choi
  • Publication number: 20050173069
    Abstract: Provided is a microwave plasma generating apparatus using a multiple open-ended cavity resonator, and a plasma processing apparatus including the microwave plasma generating apparatus. The plasma processing apparatus includes a container for forming a process chamber, a support unit that supports a material to be processed in the process chamber, a dielectric window formed on an upper part of the process chamber, a gas supply unit that inject a process gas into the process chamber, and a microwave supply unit that includes a plurality of resonators for supplying microwaves through the dielectric window.
    Type: Application
    Filed: September 1, 2004
    Publication date: August 11, 2005
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Yuri Tolmachev, Dong-joon Ma, Dae-il Kim, Sergiy Navala
  • Publication number: 20050150461
    Abstract: A deposition apparatus of depositing deposition material on a wafer in a vacuum chamber includes a deposition boat installed in the vacuum chamber to vaporize the deposition material, a wafer guide on which the wafer is loaded, the wafer guide having a rotational member rotating together with the wafer, a wafer-rotation device rotating the rotational member when the wafer guide approaches, and a wafer-transfer device reciprocating the wafer guide between an inlet of the vacuum chamber, the deposition boat and the wafer-rotation device.
    Type: Application
    Filed: August 4, 2004
    Publication date: July 14, 2005
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Young-eal Kim, Sang-jun Choi, Dong-joon Ma
  • Publication number: 20050129848
    Abstract: Provided is a patterned deposition source unit for forming a thin film on a substrate and a deposition method using the same. The patterned deposition source unit includes a main body that includes a loading section for loading a deposition material and a cover unit, which covers openings of the loading section and has a plurality of line shaped openings. The deposition material vaporized through line shaped openings of the cover unit can be vertically deposited on the substrate which moves back and forth over the main body. The method enables the improvement in the uniformity of a thin film by preventing dispersion of the deposition material in a conventional depositor, and the improvement in the density of a thin film by increasing vapor flux per unit area by reducing the distance between the deposition source unit and the substrate.
    Type: Application
    Filed: August 2, 2004
    Publication date: June 16, 2005
    Applicant: Samsung Electronics Co., Ltd
    Inventors: Sang-jun Choi, Young-eal Kim, Dong-joon Ma
  • Publication number: 20050103623
    Abstract: Provided is an ionized physical vapor deposition (IPVD) apparatus having a helical self-resonant coil. The IPVD apparatus comprises a process chamber having a substrate holder that supports a substrate to be processed, a deposition material source that supplies a material to be deposited on the substrate into the process chamber, facing the substrate holder, a gas injection unit to inject a process gas into the process chamber, a bias power source that applies a bias potential to the substrate holder, a helical self-resonant coil that produces plasma for ionization of the deposition material in the process chamber, one end of the helical self-resonant coil being grounded and the other end being electrically open, and an RF generator to supply an RF power to the helical self-resonant coil. The use of a helical self-resonant coil enables the IPVD apparatus to ignite and operate at very low chamber pressure such as approximately 0.
    Type: Application
    Filed: September 2, 2004
    Publication date: May 19, 2005
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Yuri Tolmachev, Dong-joon Ma, Sergiy Navala, Dae-il Kim
  • Publication number: 20050093460
    Abstract: Provided is helical resonator plasma processing apparatus. The plasma processing apparatus comprises a process chamber having a substrate holder for supporting a substrate, a dielectric tube disposed on the process chamber to communicate with the process chamber, a helix coil wounded around the dielectric tube, and an RF power source to supply RF power to the helix coil. The dielectric tube has a double tube shape and comprises an inner tube and an outer tube, and a plasma source gas inlet port to supply plasma source gas into a space between the inner tube and the outer tube is disposed in the outer tube. A control electrode to control plasma potential is disposed in the dielectric tube. This plasma processing apparatus provides a uniform plasma density distribution along a radial direction of a wafer, and easy control of the plasma potential in the process chamber.
    Type: Application
    Filed: November 2, 2004
    Publication date: May 5, 2005
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Dae-il Kim, Dong-joon Ma, Gook-yoon Kim, Sung-kyu Choi
  • Publication number: 20040261720
    Abstract: A high-density plasma processing apparatus includes a processing chamber, having a susceptor for supporting an object to be processed positioned therein and a dielectric window positioned on the processing chamber to form an upper surface of the processing chamber. A reaction gas injection device injects a reaction gas into an interior of the processing chamber. An inductively coupled plasma (ICP) antenna, which is installed on a center of the dielectric window, transfers radio frequency (RF) power from an RF power supply to the interior of the processing chamber. A waveguide guides a microwave generated by a microwave generator. A circular radiative tube, which is installed on the dielectric window around the ICP antenna and is connected to the waveguide, radiates a microwave toward the interior of the processing chamber via a plurality of slots formed through a bottom wall of the radiative tube.
    Type: Application
    Filed: May 12, 2004
    Publication date: December 30, 2004
    Inventors: Yuri Nikolaevich Tolmachev, Sergiy Yakovlevich Navala, Dong-Joon Ma, Dae-il Kim
  • Patent number: 6835919
    Abstract: An inductively coupled plasma apparatus is provided, wherein the inductively coupled plasma apparatus includes a process chamber having a wafer susceptor on which a substrate is installed, a top plasma source chamber which is installed on the process chamber, a reactor, which is installed in the top plasma source chamber, having a channel through which a gas flows, wherein the reactor supplies plasma reaction products to the process chamber, an inductor, having two ends, is installed between the top plasma source chamber and the reactor and is wound around the reactor, an opening which is positioned within a circumferential space in which the inductor is installed between the reactor and the process chamber, and a shutter operable to open and close the opening. Thus, a uniform radial distribution of radicals emanating from a plasma source can be improved.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: December 28, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yuri Nikolaevich Tolmachev, Dong-joon Ma, Chang-wook Moon, Hea-young Yoon
  • Publication number: 20040149387
    Abstract: An inductively coupled antenna for installation on a reaction chamber of an inductively coupled plasma (ICP) processing apparatus and for connection to a radio frequency (RF) power source to induce an electric field for ionizing a reactant gas injected into the reaction chamber and for generating plasma includes a coil having a plurality of turns including an outermost turn and a plurality of inner turns, wherein a current flowing through the outermost turn is larger than a current flowing through the plurality of inner turns. The outermost turn and the inner turns are connected to the RF power supply in parallel and the inner turns are connected to each other in series. The inductively coupled antenna further includes a conductive metal tube that has a cooling path and a conductive metal strip that is electrically and thermally connected to a lower portion of the metal tube.
    Type: Application
    Filed: December 31, 2003
    Publication date: August 5, 2004
    Inventors: Tae-wan Kim, Yuri Nikolaevich Tolmachev, Dong-joon Ma
  • Publication number: 20040140204
    Abstract: A magnetron cathode and a sputtering apparatus including the same are provided. The magnetron cathode includes three or more magnet units, each of which comprises a single magnet or a plurality of magnets having the same poles facing toward the same direction, wherein one magnet unit is disposed around the outer circumference of another magnet unit and adjacent magnet units have opposite poles facing toward the same direction. Uniform magnetic field distribution is obtained. Therefore, the erosion profile of a target is wide and uniform.
    Type: Application
    Filed: January 13, 2004
    Publication date: July 22, 2004
    Inventors: Sergiy Yakovlevich Navala, Yuri Nikolaevich Tolmachev, Dong-joon Ma, Tae-wan Kim
  • Publication number: 20040099378
    Abstract: A gas injection apparatus for injecting a reactive gas into a reaction chamber of a semiconductor processing system includes an injector in contact with an inner surface of a wall of the reaction chamber. The injector has a plurality of nozzles through which the reactive gas is injected into the reaction chamber. A gas inlet penetrates the wall of the reaction chamber. A manifold is disposed between the wall of the reaction chamber and the injector, and supplies the reactive gas flowing through the gas inlet to the nozzles. Gas channels in the manifold are arranged on a plurality of levels to equalize the lengths of gas paths connecting the gas inlet to each of the plurality of nozzles. This configuration makes the flow rate of reactive gas supplied through each of the plurality of nozzles to the reaction chamber uniform.
    Type: Application
    Filed: November 17, 2003
    Publication date: May 27, 2004
    Inventors: Tae-Wan Kim, Yuri Nikolaevich Tolmachev, Dong-Joon Ma, Sergiy Yakovlevich Navala
  • Publication number: 20040094412
    Abstract: A magnetron sputtering apparatus and a magnetron sputtering method using the same, wherein a vacuum chamber has a discharge gas inlet and a discharge gas outlet, a substrate holder is installed inside the vacuum chamber, a magnetic circuit unit, which includes a target electrode installed opposite to the substrate and a magnetron fixed on a rear surface of the target electrode, faces the substrate holder and circulates around the central axis of the substrate holder, and a driving unit circulates the magnetic circuit unit and adjusts a distance between the target electrode and the center of the substrate holder. Accordingly, in the magnetron sputtering apparatus of the present invention, the uniformity of a thin film and the step coverage is improved.
    Type: Application
    Filed: November 29, 2002
    Publication date: May 20, 2004
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Sergiy Yakovlevich Navala, Dong-joon Ma, Tae-wan Kim
  • Publication number: 20030111963
    Abstract: An inductively coupled plasma apparatus is provided, wherein the inductively coupled plasma apparatus includes a process chamber having a wafer susceptor on which a substrate is installed, a top plasma source chamber which is installed on the process chamber, a reactor, which is installed in the top plasma source chamber, having a channel through which a gas flows, wherein the reactor supplies plasma reaction products to the process chamber, an inductor, having two ends, is installed between the top plasma source chamber and the reactor and is wound around the reactor, an opening which is positioned within a circumferential space in which the inductor is installed between the reactor and the process chamber, and a shutter operable to open and close the opening. Thus, a uniform radial distribution of radicals emanating from a plasma source can be improved.
    Type: Application
    Filed: September 30, 2002
    Publication date: June 19, 2003
    Inventors: Yuri Nikolaevich Tolmachev, Dong-Joon Ma, Chang-Wook Moon, Hea-Young Yoon