Patents Examined by Sylvia R. MacArthur
  • Patent number: 9251998
    Abstract: A plasma processing apparatus includes: a radio frequency (RF) power source which applies an RF power to a lower electrode; a direct current (DC) power source which applies a DC voltage to an upper electrode; a ground member for the DC voltage that is a ring shape formed of a conductive material, that is arranged in the processing chamber such that at least a part of the ground member is exposed to the processing space, and that forms a ground potential with respect to the DC voltage applied to the upper electrode; and a plurality of vertical movement mechanisms which move the ground member for the DC voltage in a vertical direction to adjust a grounding state of the ground member for the DC voltage.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: February 2, 2016
    Assignee: TOKYO ELECTRON LIMITED
    Inventor: Hidetoshi Hanaoka
  • Patent number: 9245720
    Abstract: Apparatus and methods for assessing RF return current azimuthal uniformity are disclosed. A plurality of non-linear substantially-enclosed RF current sensors are disposed azimuthally around a central axis of a plasma processing chamber. When a plasma is ignited in the plasma processing chamber, the RF return currents are sensed in the plurality of non-linear substantially-enclosed RF current sensors and analyzed to ascertain whether RF return current azimuthal uniformity is acceptable.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: January 26, 2016
    Assignee: Lam Research Corporation
    Inventors: Alexei Marakhtanov, Rajinder Dhindsa
  • Patent number: 9236226
    Abstract: In the plasma processing apparatus 10, a processing space S is formed between a susceptor 12 and an upper electrode 13 facing the susceptor 12. The plasma processing apparatus 10 includes a magnetic field generating unit provided at a side of the upper electrode 13 opposite to the processing space S. The magnetic field generating unit includes a magnetic force line generating unit 27 having a pair of annular magnet rows 27a and 27b. The annular magnet rows 27a and 27b are provided at the side of the upper electrode 13 opposite to the processing space S and arranged concentrically when viewed from the top. In the magnetic force line generating unit 27, an angle ?1 formed by axial lines of magnets of the annular magnet rows 27a and 27b is set to be in a range of about 0°<?1?180°.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: January 12, 2016
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Jun Yamawaku, Takafumi Kimura, Chishio Koshimizu
  • Patent number: 9205529
    Abstract: A dispenser for a chemical-mechanical polishing (CMP) apparatus, includes a delivery arm disposed over a polishing pad of a CMP apparatus, at least a slurry delivery groove formed in the delivery arm and extending along a length of the delivery arm, and a plurality of first openings connected to the slurry delivery groove.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: December 8, 2015
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Liang-Chuo Ham, Chin-Chuan Chih, Jiann-Mo Lee, Chia-Ming Yang, Wen-Yen Chen
  • Patent number: 9202675
    Abstract: A plasma processing apparatus includes a processing chamber in which a target object is processed by a plasma, a first and a second electrode that are provided in the processing chamber to face each other and have a processing space therebetween, and a high frequency power source that is connected to at least one of the first and the second electrode to supply a high frequency power to the processing chamber. And at least one of the first and the second electrode includes a base formed of a plate-shaped dielectric material and a resistor formed of a metal and provided between the base and the plasma.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: December 1, 2015
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Shinji Himori, Daisuke Hayashi
  • Patent number: 9202724
    Abstract: Provided is a substrate treatment apparatus that treats a surface of a substrate while rotating the substrate. The substrate treatment apparatus includes: a physical tool unit including a physical tool configured to treat the surface of the substrate; a nozzle unit including a liquid supply nozzle configured to supply a liquid to the surface of the substrate and a gas supply nozzle configured to supply a gas to the surface of the substrate; a physical-tool-unit moving mechanism configured to move the physical tool unit along the surface of the substrate; and a nozzle-unit moving mechanism configured to move the nozzle unit along the surface of the substrate.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: December 1, 2015
    Assignee: Shibaura Mechatronics Corporation
    Inventor: Konosuke Hayashi
  • Patent number: 9196512
    Abstract: There is provided a focus ring capable of preventing a part of a heat transfer sheet from adhering to and remaining on a mounting table. The focus ring is arranged to surround a periphery of a substrate mounted on the mounting table having a temperature control device. Further, the focus ring includes a flexible heat transfer sheet. Furthermore, the focus ring is in contact with the mounting table via the heat transfer sheet, and the heat transfer sheet has a contact surface in contact with the mounting table and an anti-adhesion layer formed on the contact surface.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: November 24, 2015
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Yoshiyuki Kobayashi, Jun Watanabe, Takuya Okada, Tomoyuki Nara
  • Patent number: 9190302
    Abstract: A system and method for controlling plasma. The system includes a semiconductor chamber comprising a powered electrode, another electrode, and an adjustable coupling to ground circuit. The powered electrode is configured to receive a wafer or substrate. There is at least one grounded electrode configured to generate an electrical connection with the powered electrode. At least one of the grounded electrodes is electrically coupled to the adjustable coupling to ground circuit. The adjustable coupling to ground circuit is configured to modify the impedance of the grounded electrode. The ion energy of the plasma is controlled by the adjustable coupling to ground circuit.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: November 17, 2015
    Assignee: Lam Research Corporation
    Inventors: Tuqiang Ni, Wenli Collison
  • Patent number: 9184074
    Abstract: A method for processing a substrate in a plasma processing chamber is provided. The substrate is disposed above a chuck and surrounded by a first edge ring. The first edge ring is electrically isolated from the chuck. The method includes providing a second edge ring. The second edge ring is disposed below an edge of the substrate. The method also includes providing a coupling ring. The coupling ring is configured to facilitate RF coupling from an ESC (electrostatic chuck) assembly to the first edge ring, thereby causing the first edge ring to have an edge ring potential during substrate processing and causing the RF coupling to be maximized at the first edge ring and minimized at the second edge ring during the substrate processing. The method also includes providing an insulator ring, wherein the second edge ring is disposed above the insulator ring.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: November 10, 2015
    Assignee: Lam Research Corporation
    Inventors: Rajinder Dhindsa, Alexei Marakhtanov
  • Patent number: 9177846
    Abstract: Provided is a holding stage structure which holds a substrate and disposed in a process chamber that is vacuum-evacuatable and allows a predetermined process to be performed on the substrate therein. The holding stage structure includes: a holding stage body on which the substrate is placed; an elevation pin mechanism lowering the substrate on the holding stage body or raising the substrate from the holding stage body; and a stepped portion formed on the holding stage body so that a peripheral portion of a rear surface of the substrate placed on the holding stage body is exposed to a processing gas supplied into the process chamber.
    Type: Grant
    Filed: February 4, 2008
    Date of Patent: November 3, 2015
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Kohei Kawamura, Yasuo Kobayashi, Toshihisa Nozawa, Kiyotaka Ishibashi
  • Patent number: 9168680
    Abstract: One or more techniques for nano structure fabrication are provided. In an embodiment, an apparatus for manufacturing a nano structure is disclosed. The apparatus includes a stamp having a line pattern on a surface thereof that comprises a plurality of protrusions, a die configured to hold a substrate thereon, and a mechanical processing unit configured to press the plurality of protrusions of the stamp against the substrate with a predetermined pressure so as to form at least one channel pore therebetween.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: October 27, 2015
    Assignee: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventor: Kwangyeol Lee
  • Patent number: 9165798
    Abstract: A substrate processing apparatus comprises a single-substrate processing apparatus for processing substrates one by one, and an anti-static liquid storage part for storing an anti-static liquid having electrical resistivity maintained at target electrical resistivity higher than the electrical resistivity of an SPM liquid. A plurality of substrates held in a cartridge are immersed in the anti-static liquid inside the anti-static liquid storage part and both main surfaces of the substrate entirely come into contact with the anti-static liquid. From the substrates, static electricity is relatively gently removed. Then, after the static elimination process are finished, a processing liquid supply part supplies the SPM liquid onto an upper surface of the substrate and an SPM process is thereby performed. It is thereby possible to prevent a large amount of electric charges from rapidly moving from the substrate to the SPM liquid and also possible to prevent any damage to the substrate.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: October 20, 2015
    Assignee: SCREEN Holdings Co., Ltd.
    Inventor: Masahiro Miyagi
  • Patent number: 9150967
    Abstract: A plasma processing apparatus includes a metallic basic material arranged in a sample stage, a dielectric film of dielectric material disposed on an upper surface of the basic material, the dielectric film being formed through a plasma spray process; a film-shaped heater disposed in the dielectric film, the heater being formed through a plasma spray process; an adhesive layer arranged on the dielectric film; a sintered ceramic plate having a thickness ranging from about 0.2 mm to about 0.4 mm, the sintered ceramic plate being adhered onto the dielectric film by the adhesive layer; a sensor disposed in the basic material for sensing a temperature; and a controller for receiving an output from the sensor and adjusting quantity of heat generated by the heater.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: October 6, 2015
    Assignee: HITACHI HIGH-TECHNOLOGIES CORPORATION
    Inventors: Tomoyuki Watanabe, Mamoru Yakushiji, Yutaka Ohmoto
  • Patent number: 9145332
    Abstract: An etchant is supplied to a workpiece. Furthermore, the workpiece is irradiated with spatially modulated light to adjust a temperature profile of said workpiece while etchant is supplied.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: September 29, 2015
    Assignee: Infineon Technologies AG
    Inventor: Karl Pilch
  • Patent number: 9142435
    Abstract: Provided is a substrate processing apparatus including a partitioned susceptor and configured to heat a substrate uniformly for improving process quality and yield. The substrate stage comprises a plurality of susceptor segments embedded with heating units, a substrate stage unit comprising the plurality of susceptor segments arranged in a flat configuration to define a substrate placement surface, and a uniform heating part mounted at the substrate placement surface.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: September 22, 2015
    Assignee: Hitachi Kokusai Electric Inc.
    Inventor: Mitsunori Ishisaka
  • Patent number: 9142433
    Abstract: In a substrate processing apparatus, an anti-static liquid supply part supplies the anti-static liquid having electrical resistivity higher than that of an SPM liquid onto a substrate to puddle an entire upper surface of the substrate with the anti-static liquid, to thereby gradually remove static electricity from the substrate. Then, the processing liquid supply part supplies the SPM liquid onto the substrate to thereby perform an SPM process. In the SPM process, it is thereby possible to prevent a large amount of electric charges from rapidly moving from the substrate to the SPM liquid and prevent any damage to the substrate. Further, by maintaining the electrical resistivity of the anti-static liquid at the target electrical resistivity, it is possible to increase the static elimination efficiency of the substrate and shorten the time required for the static elimination process within the limits of causing no damage to the substrate.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: September 22, 2015
    Assignee: SCREEN Holdings Co., Ltd.
    Inventors: Masahiro Miyagi, Kazunori Fujikawa
  • Patent number: 9136105
    Abstract: The wafer bevel etching apparatus of the present invention includes a wafer-protecting mask to cover parts of a wafer. A central region and a wafer bevel region surrounding the central region are defined on the wafer. The wafer-protecting mask includes a center sheltering region and at least one wafer bevel sheltering region. The center sheltering region can completely shelter the central region of the wafer, and the wafer bevel sheltering region extends from the outside edge of the center sheltering region, shelters parts of the wafer bevel region, and exposes the other parts of the wafer bevel region.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: September 15, 2015
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Tai-Heng Yu, Chih-Yueh Li
  • Patent number: 9132523
    Abstract: A method of performing chemical mechanical polish (CMP) processes on a wafer includes providing the wafer; determining a thickness profile of a feature on a surface of the wafer; and, after the step of determining the thickness profile, performing a high-rate CMP process on the feature using a polish recipe to substantially achieve a within-wafer thickness uniformity of the feature. The polish recipe is determined based on the thickness profile.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: September 15, 2015
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Shen-Nan Lee, Ying-Mei Lin, Yu-Jen Cheng, Keung Hui, Huan-Just Lin
  • Patent number: 9123650
    Abstract: Plasma confinement rings are adapted to reach sufficiently high temperatures on plasma-exposed surfaces of the rings to substantially reduce polymer deposition on those surfaces. The plasma confinement rings include an RF lossy material effective to enhance heating at portions of the rings. A low-emissivity material can be provided on a portion of the plasma confinement ring assembly to enhance heating effects.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: September 1, 2015
    Assignee: LAM RESEARCH CORPORATION
    Inventor: James H. Rogers
  • Patent number: 9117862
    Abstract: There is provided a substrate processing apparatus 101, comprising: a substrate holder 217 that holds a plurality of substrates (wafers) 200 in a state of being arranged in a lateral direction (approximately in a horizontal direction) approximately in a vertical posture; a processing tube 205 that houses the substrate holder 217; a throat side sealing part (throat side mechanical flange part) 2190 that air-tightly closes an opening part of the processing tube 205; a rotation part 255 that rotates the substrate holder 217 in a peripheral direction of the substrates, with an arrangement direction (a direction in which the substrates 200 are held) of the plurality of substrates 200 as a rotation axis, wherein the substrate holder 217 includes a fixing part (movable holding part 217c) and a fixture holding part 217a for fixing the substrates 200 approximately in a vertical posture.
    Type: Grant
    Filed: February 8, 2010
    Date of Patent: August 25, 2015
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Hideo Ishizu, Masayuki Suzuki