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).
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Patent number: 7252716Abstract: 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: GrantFiled: November 17, 2003Date of Patent: August 7, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Tae-wan Kim, Yuri Nikolaevich Tolmachev, Dong-joon Ma, Sergiy Yakovlevich Navala
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Patent number: 7210424Abstract: 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: GrantFiled: May 12, 2004Date of Patent: May 1, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Yuri Nikolaevich Tolmachev, Sergiy Yakovlevich Navala, Dong-joon Ma, Dae-il Kim
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Patent number: 7170777Abstract: 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: GrantFiled: August 1, 2005Date of Patent: January 30, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Sang-jun Choi, Jung-hyun Lee, Dong-joon Ma, Wan-jun Park, Young-soo Park
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Patent number: 7052583Abstract: 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: GrantFiled: January 13, 2004Date of Patent: May 30, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Sergiy Yakovlevich Navala, Yuri Nikolaevich Tolmachev, Dong-joon Ma, Tae-wan Kim
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Patent number: 7053448Abstract: 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: GrantFiled: March 3, 2005Date of Patent: May 30, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Sang-hun Jeon, Chung-woo Kim, Dong-joon Ma, Sung-kyu Choi
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Publication number: 20060092694Abstract: 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: ApplicationFiled: August 1, 2005Publication date: May 4, 2006Applicant: Samsung Electronics Co., Ltd.Inventors: Sang-jun Choi, Jung-hyun Lee, Dong-joon Ma, Wan-jun Park, Young-soo Park
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Patent number: 6966952Abstract: 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: GrantFiled: August 4, 2004Date of Patent: November 22, 2005Assignee: Samsung Electronics Co., Ltd.Inventors: Young-eal Kim, Sang-jun Choi, Dong-joon Ma
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Publication number: 20050205920Abstract: 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: ApplicationFiled: March 3, 2005Publication date: September 22, 2005Inventors: Sang-hun Jeon, Chung-woo Kim, Dong-joon Ma, Sung-kyu Choi
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Publication number: 20050173069Abstract: 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: ApplicationFiled: September 1, 2004Publication date: August 11, 2005Applicant: Samsung Electronics Co., Ltd.Inventors: Yuri Tolmachev, Dong-joon Ma, Dae-il Kim, Sergiy Navala
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Publication number: 20050150461Abstract: 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: ApplicationFiled: August 4, 2004Publication date: July 14, 2005Applicant: Samsung Electronics Co., Ltd.Inventors: Young-eal Kim, Sang-jun Choi, Dong-joon Ma
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Publication number: 20050129848Abstract: 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: ApplicationFiled: August 2, 2004Publication date: June 16, 2005Applicant: Samsung Electronics Co., LtdInventors: Sang-jun Choi, Young-eal Kim, Dong-joon Ma
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Publication number: 20050103623Abstract: 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: ApplicationFiled: September 2, 2004Publication date: May 19, 2005Applicant: Samsung Electronics Co., Ltd.Inventors: Yuri Tolmachev, Dong-joon Ma, Sergiy Navala, Dae-il Kim
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Publication number: 20050093460Abstract: 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: ApplicationFiled: November 2, 2004Publication date: May 5, 2005Applicant: Samsung Electronics Co., Ltd.Inventors: Dae-il Kim, Dong-joon Ma, Gook-yoon Kim, Sung-kyu Choi
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Publication number: 20040261720Abstract: 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: ApplicationFiled: May 12, 2004Publication date: December 30, 2004Inventors: Yuri Nikolaevich Tolmachev, Sergiy Yakovlevich Navala, Dong-Joon Ma, Dae-il Kim
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Patent number: 6835919Abstract: 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: GrantFiled: September 30, 2002Date of Patent: December 28, 2004Assignee: Samsung Electronics Co., Ltd.Inventors: Yuri Nikolaevich Tolmachev, Dong-joon Ma, Chang-wook Moon, Hea-young Yoon
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Publication number: 20040149387Abstract: 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: ApplicationFiled: December 31, 2003Publication date: August 5, 2004Inventors: Tae-wan Kim, Yuri Nikolaevich Tolmachev, Dong-joon Ma
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Publication number: 20040140204Abstract: 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: ApplicationFiled: January 13, 2004Publication date: July 22, 2004Inventors: Sergiy Yakovlevich Navala, Yuri Nikolaevich Tolmachev, Dong-joon Ma, Tae-wan Kim
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Publication number: 20040099378Abstract: 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: ApplicationFiled: November 17, 2003Publication date: May 27, 2004Inventors: Tae-Wan Kim, Yuri Nikolaevich Tolmachev, Dong-Joon Ma, Sergiy Yakovlevich Navala
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Publication number: 20040094412Abstract: 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: ApplicationFiled: November 29, 2002Publication date: May 20, 2004Applicant: Samsung Electronics Co., Ltd.Inventors: Sergiy Yakovlevich Navala, Dong-joon Ma, Tae-wan Kim
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Publication number: 20030111963Abstract: 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: ApplicationFiled: September 30, 2002Publication date: June 19, 2003Inventors: Yuri Nikolaevich Tolmachev, Dong-Joon Ma, Chang-Wook Moon, Hea-Young Yoon