Patents Examined by Luz Alejandro
  • Patent number: 6939434
    Abstract: A plasma reactor is described that includes a vacuum chamber defined by an enclosure including a side wall and a workpiece support pedestal within the chamber defining a processing region overlying said pedestal. The chamber has at least a first pair of ports near opposing sides of said processing region and a first external reentrant tube is connected at respective ends thereof to the pair of ports. The reactor further includes a process gas injection apparatus (such as a gas distribution plate) and an RF power applicator coupled to the reentrant tube for applying plasma source power to process gases within the tube to produce a reentrant torroidal plasma current through the first tube and across said processing region. A magnet controls radial distribution of plasma ion density in the processing region, the magnet having an elongate pole piece defining a pole piece axis intersecting the processing region.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: September 6, 2005
    Assignee: Applied Materials, Inc.
    Inventors: Kenneth S. Collins, Hiroji Hanawa, Yan Ye, Kartik Ramaswamy, Andrew Nguyen, Michael S. Barnes, Huong Thanh Nguyen
  • Patent number: 6933182
    Abstract: A method of manufacturing a semiconductor device, comprises the steps of: forming an amorphous silicon film on a substrate having an insulating surface; processing said amorphous silicon film by plasma of a gas that mainly contains hydrogen or helium; and giving an energy to said amorphous silicon film.
    Type: Grant
    Filed: March 1, 1999
    Date of Patent: August 23, 2005
    Inventors: Shunpei Yamazaki, Satoshi Teramoto, Naoto Kusumoto, Hideto Ohnuma
  • Patent number: 6929700
    Abstract: A substrate processing apparatus comprising a substrate processing chamber, a gas distribution system operatively coupled to the chamber, a high density plasma power source, a controller operatively coupled to the gas distribution system and the high density plasma power source and a memory coupled to the controller. The memory includes computer instructions embodied in a computer-readable format. The computer instructions comprise (i) instructions that control the gas distribution system to flow a process gas comprising a silane gas, an oxygen-containing source, an inert gas and a hydrogen-containing source that is either molecular hydrogen or a hydride gas that does not include silicon, boron or phosphorus and (ii) instructions that control the high density plasma source to form a plasma having an ion density of at least 1×1011 ions/cm3 from the process gas to deposit the silicon oxide layer over the substrate.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: August 16, 2005
    Assignee: Applied Materials, Inc.
    Inventors: Zhengquan Tan, Dongqing Li, Walter Zygmunt, Tetsuya Ishikawa
  • Patent number: 6916509
    Abstract: With a conventional cylindrical can method, a region used as a film formation ground electrode is a portion of the cylindrical can, and an apparatus becomes larger in size in proportion to the surface area of the electrode. A conveyor device and a film formation apparatus having the conveyor device are provided, which have a unit for continuously conveying a flexible substrate from one end to the other end, and which are characterized in that a plurality of cylindrical rollers are provided between the one end and the other end along an arc with a radius R, the cylindrical rollers being arranged such that their center axes run parallel to each other, and that a mechanism for conveying the flexible substrate while the substrate is in contact with each of the plurality of cylindrical rollers is provided.
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: July 12, 2005
    Assignees: Semiconductor Energy Laboratory Co., Ltd., TDK Corporation
    Inventors: Masato Yonezawa, Naoto Kusumoto, Hisato Shinohara
  • Patent number: 6908530
    Abstract: A microwave plasma processing apparatus is provided, which includes a microwave generator, a plasma promoter, a microwave plasma processing chamber, a vacuum gas-discharging chamber, and a loading elevator, wherein microwave produced from the microwave generator is gradually transformed into a desirable mode through the use of a microwave coupling resonator, and processing gas supplied by a gas supply system is evenly introduced via slantwise gas outlets of an annular gas distribution panel into the microwave processing chamber. The microwave is used to induce the processing gas to form a plasma sphere in the microwave plasma processing chamber; by reducing pressure in the microwave plasma processing chamber via the vacuum gas-discharging chamber, a vapor deposition process can be performed on a sample disposed on a sample holder of the loading elevator.
    Type: Grant
    Filed: December 31, 2002
    Date of Patent: June 21, 2005
    Assignee: Industrial Technology Research Institute
    Inventors: Chih-Yung Huang, Ting-Wei Huang, Ching-Sung Hsiao
  • Patent number: 6905548
    Abstract: The invention relates to a device for the deposition of in particular, crystalline layers on one or several, in particular, equally crystalline substrates, comprising a process chamber, arranged in a reactor housing, which may be charged with the substrates from above, by a reactor housing opening which may be sealed by a cover. The reactor housing opening opens out into a glove box, in particular flushed with highly pure gas and connects electricity, liquid or gas supply lines to the cover. According to the invention, the connection of supply lines for electricity, fluid or gas sources arranged outside the glove box to the cover of the reactor housing arranged within the glove box may be improved, whereby the electricity, fluid or gas supply lines run freely, from outside the glove box, through a flexible tube which is sealed atone end to a flange arrangement rigidly fixed to the cover and sealed at the other end to an opening in the glove box wall.
    Type: Grant
    Filed: March 3, 2003
    Date of Patent: June 14, 2005
    Assignee: Aixtron AG
    Inventors: Holger Jürgensen, Gerhard Karl Strauch, Johannes Käppeler
  • Patent number: 6881352
    Abstract: A plasma processing control system and method which can suppress influences caused by disturbances. The control system includes a plasma processor for performing processing operation over a sample accommodated within a vacuum processing chamber, a sensor for monitoring process parameters during processing operation of the plasma processor, a processed-result estimation model for estimating a processed result on the basis of a monitored output of the sensor and a preset processed-result prediction equation, and an optimum recipe calculation model for calculating correction values of processing conditions on the basis of an estimated result of the processed-result estimation model in such a manner that the processed result becomes a target value. The plasma processor is controlled on the basis of a recipe generated by the optimum recipe calculation model.
    Type: Grant
    Filed: January 24, 2003
    Date of Patent: April 19, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Akira Kagoshima, Hideyuki Yamamoto, Shoji Ikuhara, Toshio Masuda, Hiroyuki Kitsunai, Junichi Tanaka, Natsuyo Morioka, Kenji Tamaki
  • Patent number: 6877458
    Abstract: To provide an apparatus for forming a deposited film, which is a parallel plate electrode type CVD apparatus, with a discharge vessel receiving a material gas flowing therein and discharging air therefrom, decomposing the material gas by the aid of a plasma generated therein, and depositing the film on the substrate, in which the exhaust port of the material gas exhaust means has an opening wider in the lateral direction than the parallel plate electrode. This structure diminishes the stagnant region of the material gas during the deposited film forming process and controls formation of by-products, to deposit the film uniform in quality and thickness.
    Type: Grant
    Filed: March 5, 2001
    Date of Patent: April 12, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Ozaki, Shotaro Okabe, Masahiro Kanai, Yuzo Koda, Tadashi Hori
  • Patent number: 6875326
    Abstract: A plasma processing device include a plasma generation unit for generating plasma by using a cathodic arc discharge, first and second magnetic field ducts arranged in a row for transporting the plasma with one end of the row being connected to the plasma generation unit and a processing chamber connected to the other end of the row unit and having a stage for holding a substrate to be processed. A shutter is provided for covering the plasma during a period of a predetermined time after start of arc discharge or during a period of predetermined time before end of arc discharge. The shutter is disposed between the first magnetic field duct and the substrate to be processed, and is movable. The shutter is capable of being supplied with a voltage, and is kept in a state so as to be electrically insulated from the processing chamber.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: April 5, 2005
    Assignees: Hitachi, Ltd., Nanofilm Technologies International PTE, Ltd.
    Inventors: Hiroshi Inaba, Shinji Sasaki, Shinya Hirano, Kenji Furusawa, Minoru Yamasaka, Atsushi Amatatsu, Shi Xu
  • Patent number: 6875307
    Abstract: A plasma processing method includes controlling a pressure of an interior of a vacuum chamber to a specified pressure by exhausting the interior of the vacuum chamber while supplying gas into the interior of vacuum chamber. While the pressure of the interior of the vacuum chamber is being controlled, high-frequency power is supplied to one end of a first conductor which is opened at another end, and which is configured as a vortex. Also, grounding one end of a second conductor which is opened at another end and which is configured as a vortex. Finally, electromagnetic waves from the first conductor and the second conductor radiate into the vacuum chamber, generating plasma in the vacuum chamber and processing a substrate placed on the electrode within the vacuum chamber.
    Type: Grant
    Filed: February 1, 2002
    Date of Patent: April 5, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tomohiro Okumura, Ichiro Nakayama
  • Patent number: 6874443
    Abstract: A layer-by-layer etching apparatus and an etching method using a neutral beam which enables to control etching depth to an atomic level by controlling the etching of each atom of a material layer to be etched under precise control of the supply of an etching gas and irradiation of the neutral beam and enables to minimize etching damage. In the layer-by-layer etching method, a substrate to be etched, on which a layer to be etched is exposed, is loaded on a stage in a reaction chamber. An etching gas is supplied into the reaction chamber to adsorb the etching gas on the surface of an exposed portion of the layer to be etched. Excessive etching gas remaining after being adsorbed is removed. A neutral beam is irradiated on the layer to be etched on which the etching gas is adsorbed. Etch by-products generated by the irradiation of the neutral beam is removed.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: April 5, 2005
    Assignee: Sungkyunkwan University
    Inventors: Geun-young Yeom, Min-jae Chung, Do-haing Lee, Sung-min Cho, Sae-hoon Chung
  • Patent number: 6872281
    Abstract: A plasma confining assembly for minimizing unwanted plasma formations in regions outside of a process region in a process chamber is disclosed. The plasma confining assembly includes a first confining element and second confining element positioned proximate the periphery of the process region. The second confining element is spaced apart from the first confining element. The first confining element includes an exposed conductive surface that is electrically grounded and the second confining element includes an exposed insulating surface, which is configured for covering a conductive portion that is electrically grounded. The first confining element and the second confining element substantially reduce the effects of plasma forming components that pass therebetween.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: March 29, 2005
    Assignee: Lam Research Corporation
    Inventors: Jian J. Chen, Mukund Srinivasan, Eric H. Lenz
  • Patent number: 6858112
    Abstract: A process for fabricating a product 28, 119. The process comprises the steps of subjecting a substrate to a composition of entities, at least one of the entities emanating from a species generated by a gaseous discharge excited by a high frequency field in which the vector sum of currents to phase and inverse-phase capacitive coupled voltages from the inductive coupling structure can be selectively maintained.
    Type: Grant
    Filed: November 18, 1996
    Date of Patent: February 22, 2005
    Assignee: Hitachi Kokusai Electric Co., Ltd.
    Inventors: Daniel L. Flamm, Georgy K. Vinogradov, Shimao Yoneyama
  • Patent number: 6855225
    Abstract: A plasma source for use in, for example, semiconductor processing contains a radio-frequency generator, an impedance matching network, and a coil that encloses a tube. The coil is bifilar, i.e., the turns of one are interlaced with the turns of a second winding. The matching network supplies only a single coil in the plasma source, unlike conventional arrangements wherein a single matching network supplies multiple coils in the plasma source.
    Type: Grant
    Filed: January 24, 2003
    Date of Patent: February 15, 2005
    Assignee: Novellus Systems, Inc.
    Inventors: Yuh-Jia Su, David Lee Chen, Vincent Bernard Decaux
  • Patent number: 6844031
    Abstract: A single, or common, ion beam source is utilized for ion beam deposition (IBD) of defect-free multilayer coatings, e.g., multilayer, carbon-based protective overcoats for magnetic and/or magneto-optical (MO) data recording/information storage and retrieval media such as hard disks. According to the inventive methodology, a plurality of source gas supply means for supplying a single IBD source with different source gases for each of the layers of the multilayer are selectively operated in “vent” and “run” modes by means of a plurality of valves, the opening and closing of which are determined by a programmable gas flow controller. The inventive method and apparatus advantageously provide IBD of multilayer coatings with minimum cross-contamination of individual layers, at a reduced equipment cost and size obtained by elimination of the need for separate ion beam sources and associated vacuum pump for each constituent layer of the multilayer.
    Type: Grant
    Filed: April 5, 2004
    Date of Patent: January 18, 2005
    Assignee: Seagate Technology LLC
    Inventors: Paul Stephen McLeod, Mark A. Shows
  • Patent number: 6830653
    Abstract: A plasma processing method for generating plasma in a vacuum chamber and processing a substrate placed on a substrate electrode, the plasma being generated by supplying a high-frequency power having a frequency of 50 MHz to 3 GHz to an antenna provided opposite to the substrate electrode while interior of the vacuum chamber is controlled to a specified pressure by supplying a gas into the vacuum chamber and exhausting the interior of the vacuum chamber, the method includes with a dielectric plate being sandwiched between the antenna and the vacuum chamber and both the antenna and the dielectric plate projecting into the vacuum chamber, controlling plasma distribution on the substrate with an annular and recessed slit provided between the antenna and the vacuum chamber, and processing the substrate in a state where the antenna cover is fixed by making both an inner side face of the slit and the antenna covered with an antenna cover, making a bottom face of the slit covered with a slit cover, supporting the ant
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: December 14, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tomohiro Okumura, Yukihiro Maegawa, Izuru Matsuda, Takayuki Kai, Mitsuo Saitoh
  • Patent number: 6827787
    Abstract: With a conventional cylindrical can method, a region used as a film formation ground electrode is a portion of the cylindrical can, and an apparatus becomes larger in size in proportion to the surface area of the electrode. A conveyor device and a film formation apparatus having the conveyor device are provided, which have a unit for continuously conveying a flexible substrate from one end to the other end, and which are characterized in that a plurality of cylindrical rollers are provided between the one end and the other end along an arc with a radius R, the cylindrical rollers being arranged such that their center axes run parallel to each other, and that a mechanism for conveying the flexible substrate while the substrate is in contact with each of the plurality of cylindrical rollers is provided.
    Type: Grant
    Filed: February 5, 2001
    Date of Patent: December 7, 2004
    Assignees: Semiconductor Energy Laboratory Co., Ltd., TDK Corporation
    Inventors: Masato Yonezawa, Naoto Kusumoto, Hisato Shinohara
  • Patent number: 6806201
    Abstract: A plasma processing method and apparatus are proposed that are suited to process the surface of a sample such as a semiconductor device using plasma. The bias voltages to the plasma generation and sample are respectively independently controlled, the RF voltage waveform as the bias voltage to a substrate electrode on which the sample is placed is flattened at an arbitrary voltage level, thereby controlling the energy distribution of ions incident to the sample to be a desired distribution. Therefore, plasma processing can be carried out with high precision.
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: October 19, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Masahiro Sumiya, Naoki Yasui, Seiichi Watanabe, Hitoshi Tamura
  • Patent number: 6793768
    Abstract: A plasma-assisted processing apparatus has a vacuum vessel defining a processing chamber, a gas supply line for carrying gases into the processing chamber, a workpiece support disposed in the processing chamber and serving as an electrode, a disk antenna for radiating a high-frequency wave having a frequency in the VHF or the UHF band into the processing chamber, a high-frequency waveguide for guiding a high-frequency wave to the disk antenna, and a window made of a dielectric material isolating the disk antenna from the processing chamber. A conductive ring is disposed between the disk antenna and the window such that one surface thereof is in contact with a peripheral part of the disk antenna.
    Type: Grant
    Filed: February 4, 2002
    Date of Patent: September 21, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Hideyuki Kazumi, Manabu Edamura, Kazuyuki Ikenaga, Atsushi Ootake
  • Patent number: 6790311
    Abstract: In a plasma reactor including a reactor chamber, a workpiece support for holding a workpiece inside the chamber during processing and an inductive antenna, a window electrode proximal a wall of the chamber, the antenna and wall being positioned adjacently, the window electrode being operable as (a) a capacitive electrode accepting RF power to capacitively coupled plasma source power into the chamber, and (b) a window electrode passing RF power therethrough from said antenna into the chamber to inductively couple plasma source power into the chamber.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: September 14, 2004
    Inventors: Kenneth S Collins, Michael Rice, Farahmand E Askarinam, Douglas A Buchberger, Jr., Craig A Roderick