Patents Examined by Gregory Mills
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Patent number: 6743297Abstract: A rotary substrate processing apparatus includes a rotor 1 having a holding member for holding a plurality of semiconductor wafers W arranged at appropriate intervals and a motor 4 for rotating the rotor 1. The holding member includes open/close holding rods 3 that are moved to open or close the rotor 1 in inserting the wafers W into the rotor 1 sideways and a plurality of constant-position holding rods 2a to 2d for holding the wafers W in cooperation with the open/close holding rods 3. Among the constant-position holding rods 2a to 2d, at least one constant-position holding rod 2a is equipped with a plurality of press members 5 which move toward respective peripheral portions of the wafers W by centrifugal force due to the rotation of the rotor 1. Consequently, it becomes possible to make the wafers W follow the rotation of the rotor 1 ensurely and also possible to reduce slip between the open/close holding rods 3, the constant-position holding rods 2a to 2d and the wafers W.Type: GrantFiled: May 21, 2002Date of Patent: June 1, 2004Assignee: Tokyo Electron LimitedInventors: Koji Egashira, Sadayuki Fujishima, Yuji Kamikawa
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Patent number: 6740246Abstract: A method for making multi-layer electronic circuit boards 64 having “blind” type apertures 28, 30 which may be selectively and electrically grounded and further having selectively formed air bridges and/or crossover circuits 45, 46.Type: GrantFiled: April 17, 2001Date of Patent: May 25, 2004Assignee: Visteon Global Tech., Inc.Inventors: Andrew Zachary Glovatsky, Robert Edward Belke, Marc Alan Straub, Michael George Todd
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Patent number: 6740166Abstract: A semiconductor thin film deposition apparatus having at least one reactor in which a wafer is received, a gas supply portion for supplying a reaction gas or inert gas to the reactor, and an exhaust pump for exhausting gas from the reactor, characterized in that the improvement comprises an ozone supply portion for generating ozone as a gas that reacts with the reaction gas, and for supplying the ozone to the reactor.Type: GrantFiled: November 30, 2000Date of Patent: May 25, 2004Assignee: IPS, Ltd.Inventor: Won-sung Choi
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Patent number: 6740247Abstract: The invention provides HF vapor process conditions that can be precisely controlled with a high degree of reproducibility for a wide range of starting wafer conditions. These HF vapor processes for, e.g., etching oxide on a semiconductor substrate, cleaning a contaminant on a semiconductor substrate, removing etch residue from a metal structure on a semiconductor substrate, and cleaning a metal contact region of a semiconductor substrate. In the HF vapor process, a semiconductor substrate having oxide, a contaminant, metal etch residue, or a contact region to be processed is exposed to hydrofluoric acid vapor and water vapor in a process chamber held at temperature and pressure conditions that are controlled to form on the substrate no more than a sub-monolayer of etch reactants and products produced by the vapor as the substrate is processed by the vapor.Type: GrantFiled: February 4, 2000Date of Patent: May 25, 2004Assignee: Massachusetts Institute of TechnologyInventors: Yong-Pil Han, Herbert H. Sawin
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Patent number: 6740194Abstract: An apparatus and method for modifying the surface of an object by contacting said surface with a liquid processing solution using the liquid applicator geometry and Marangoni effect (surface tension gradient-driven flow) to define and confine the dimensions of the wetted zone on said object surface. In particular, the method and apparatus involve contouring or figuring the surface of an object using an etchant solution as the wetting fluid and using real-time metrology (e.g. interferometry) to control the placement and dwell time of this wetted zone locally on the surface of said object, thereby removing material from the surface of the object in a controlled manner. One demonstrated manifestation is in the deterministic optical figuring of thin glasses by wet chemical etching using a buffered hydrofluoric acid solution and Marangoni effect.Type: GrantFiled: January 24, 2003Date of Patent: May 25, 2004Assignee: The Regents of the University of CaliforniaInventors: Michael C. Rushford, Jerald A. Britten
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Patent number: 6740167Abstract: A device for mounting a substrate includes a susceptor as a support for the substrate to be coated. The susceptor includes an insert whose surface is at least partly formed by a metal carbide layer of a predetermined thickness. The device for mounting the substrate eliminates a contamination of the substrate during processing, such as during production of an epitaxial layer on a wafer. A method for producing the insert includes the steps of producing a metallic preform, embedding the metallic preform in a carbon-containing powder, heating the metallic preform and the carbon-containing powder to an elevated temperature, hard processing the heat-treated preform and disposing the hard-processed preform on the susceptor as an insert.Type: GrantFiled: July 31, 2000Date of Patent: May 25, 2004Assignee: SICED Electronics Development GmbH & Co., KGInventors: Roland Rupp, Arno Wiedenhofer
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Patent number: 6736930Abstract: A microwave plasma processing apparatus prevents the component parts of a process chamber from being influenced by heat associated with plasma, thereby improving the quality of plasma processing performed in the process chamber. A wavelength reducing member reduces a wavelength of a microwave transmitted therethrough. A slot electrode guides the microwave exiting the wavelength reducing member, the slot electrode provided adjacent to the wavelength reducing member. A first temperature control device controls a temperature of at least one of the slot electrode and component parts including the wavelength reducing member provided in the vicinity of the slot electrode. The microwave exiting the slot electrode is introduced to the process chamber so that plasma is generated by the microwave within the process chamber.Type: GrantFiled: March 28, 2000Date of Patent: May 18, 2004Assignee: Tokyo Electron LimitedInventor: Toshiaki Hongoh
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Patent number: 6736926Abstract: A system of cleaning a CMP pad used for removing copper from a substrate, the system comprising an abrasive cleaning pad, a cleaning solution delivery system that delivers a cleaning solution, an analyzing system that monitors the characteristics of the cleaning solution optically and chemically, and a carriage that allows the analyzing system to monitor the cleaning solution at a plurality of locations on the CMP pad. The use of the abrasive cleaning pad and the cleaning solution removes contaminants from the CMP pad, and the contaminants are dissolved in the cleaning solution. By measuring the concentration of contaminants in the cleaning solution, the condition of the CMP pad can be monitored. To measure the concentration of the contaminants, changes in the refractive index and absorption of light in the cleaning solution are measured, wherein the refractive index and absorption depend on the concentration of the contaminants.Type: GrantFiled: October 9, 2001Date of Patent: May 18, 2004Assignee: Micron Technology, Inc.Inventors: Dinesh Chopra, Scott Meikle
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Patent number: 6733624Abstract: An apparatus for holding an object to be processed, according to this invention is mounted in a plasma processing apparatus and includes a convex-shaped holder main body, first dielectric film, and second dielectric film. The holder main body has a holding portion which holds an object to be processed placed on it and a flange formed on the peripheral portion of the holding portion to fit with a focus ring. The first dielectric film attracts the object to be processed placed on the holding portion to the holder main body by a Coulomb force. The second dielectric film attracts the focus ring fitted on the flange to the holder main body by an attracting force larger than that of the first dielectric film using a Johnson-Rahbek force. The electrostatic attracting force of the focus ring for the holder main body is increased, so that the cooling effect is increased.Type: GrantFiled: January 16, 2003Date of Patent: May 11, 2004Assignee: Tokyo Electron LimitedInventors: Akira Koshiishi, Shinji Himori
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Patent number: 6733829Abstract: A deposition ring which has a cut out on its interior circumferential edge. The deposition ring is configured to contact an edge of an electrostatic chuck and shield at least a portion of the electrostatic chuck during a deposition process wherein material is deposited onto an item, such as a semiconductor wafer, which is disposed on the electrostatic chuck. The interior circumferential edge of the deposition ring includes a surface portion which is configured to engage the edge of the electrostatic chuck, and includes the cut out portion which is configured to be spaced away and not contact the edge of the electrostatic chuck during the deposition process. As such, the deposition ring does not tend to bind with the electrostatic chuck during the deposition process.Type: GrantFiled: March 19, 2002Date of Patent: May 11, 2004Assignee: LSI Logic CorporationInventors: Dave Stacey, Jonathan Allinger, Allan Vescovi
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Patent number: 6733848Abstract: A thin film forming equipment and a method for forming thin films are provided which are capable of forming the thin film of high quality and of effectively preventing CVD material gas from leaking to surroundings at a low cost. The thin film equipment contains a substrate, a substrate holding device used to hold the substrate and a device used to provide an atmospheric gas to a surface of the substrate held by the substrate holding device, wherein an upper face of the substrate held by the substrate holding device and an upper face of the substrate holding device are almost on one plane.Type: GrantFiled: November 21, 2001Date of Patent: May 11, 2004Assignee: NEC CorporationInventors: Yukio Morishige, Makoto Omiya
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Patent number: 6730175Abstract: A substrate support assembly for supporting a substrate during processing is provided. In one embodiment, a support assembly includes a ceramic body having an embedded heating element and a base plate. The base plate and the ceramic body define a channel therebetween adapted to supply purge gas to a perimeter of a substrate disposed on the support assembly. The base plate is fastened to the body by brazing, adhering, fastening, press fitting or by mating engaging portions of a retention device such as a bayonet fitting.Type: GrantFiled: January 22, 2002Date of Patent: May 4, 2004Assignee: Applied Materials, Inc.Inventors: Joseph Yudovsky, Salvador P. Umotoy, Shamouil Shamouilian, Ron Rose, Rita Dukes, Xiaoxiong Yuan
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Patent number: 6730191Abstract: A polishing apparatus of a semiconductor wafer by a chemical-mechanical polishing method including a polishing platen having an upper surface on which a polishing pad is attached. The polishing platen is rotated in one direction along a central axis. A plurality of coaxial polishing-dressing head assemblies each having a lower surface opposed to an upper surface of the polishing pad on the polishing platen. Each of the coaxial assemblies holds a wafer to be polished while rotating along a central axis and pressing the rotating wafers on a radial portion of the rotating polishing pad. A polishing pad dressing ring is mounted coaxially encircling each of the wafer supporting heads. The applied compression on the wafer supporting heads pushes the wafer and the coaxially mounted dressing ring against the upper surface of the polishing pad therefore polishing each wafer while dressing the polishing pad.Type: GrantFiled: June 25, 2001Date of Patent: May 4, 2004Assignee: Vanguard International Semiconductor CorporationInventor: Randy (C. H.) Chang
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Patent number: 6726533Abstract: In a method for polishing leads of a semiconductor package, a plurality of semiconductor packages is arranged in a certain manner. Then, the leads are automatically polished. The semiconductor packages may be masked to expose at least a part of the leads to be polished.Type: GrantFiled: November 28, 2001Date of Patent: April 27, 2004Assignee: Oki Electric Industry Co., Ltd.Inventor: Takeyuki Sato
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Patent number: 6723202Abstract: A plasma etching apparatus includes a worktable disposed in a hermetic process chamber. The worktable has a main surface for placing a wafer thereon, and a sub-surface for placing a focus ring thereon. A cooling mechanism for supplying cold to the main surface and sub-surface is disposed in the worktable. A heat transfer medium made of conductive silicone rubber is interposed between the sub-surface and focus ring. A press mechanism presses the focus ring toward the sub-surface. The heat transfer medium improves thermal conductivity between the sub-surface and focus ring to be higher than in a case with no thermal transfer medium.Type: GrantFiled: April 24, 2001Date of Patent: April 20, 2004Assignee: Tokyo Electron LimitedInventors: Toshifumi Nagaiwa, Shuei Sekizawa, Kosuke Imafuku, Jun Ooyabu
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Patent number: 6723201Abstract: A microchip fabrication chamber has a pedestal adapted to retain a wafer during processing steps conducted within the chamber. A lift mechanism including a plurality of lift mechanism pins engages and disengages a wafer to the pedestal. A sensor associated with the tip of at least one of the lift mechanism pins detects the presence of the wafer.Type: GrantFiled: February 21, 2002Date of Patent: April 20, 2004Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.Inventors: Wen-Ming Chen, Wen-Chi Wang
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Patent number: 6719849Abstract: A single-substrate-processing apparatus includes an airtight process chamber, in which a worktable is supported by a pedestal. A conduction structure is arranged to conduct static electricity generated on the worktable and a wafer thereon to a grounded portion outside the process chamber. The conduction structure has a conductive film formed on insulating surfaces of the worktable and the pedestal.Type: GrantFiled: May 16, 2001Date of Patent: April 13, 2004Assignee: Tokyo Electron LimitedInventors: Takahiro Horiguchi, Naofumi Oda
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Patent number: 6716299Abstract: An invention is provided for a retaining ring for use in a chemical mechanical planarization system. The retaining ring includes an annular retaining ring capable of holding a flatted wafer in position during a CMP operation. The flatted wafer has a first corner and a second corner disposed on a flatted edge of the wafer. Also included is a plurality of profiled teeth disposed along an interior surface of the annular retaining ring. The profiled teeth are separated from each other such that the first comer and the second corner of the wafer do not contact profiled teeth simultaneously at all orientations of the wafer in the retaining ring. In addition, a surface of each tooth that contacts the wafer is inclined so as to form an angle greater than 90° relative to a polishing surface and away from the center of the wafer.Type: GrantFiled: June 28, 2002Date of Patent: April 6, 2004Assignee: Lam Research CorporationInventors: Yehiel Gotkis, Aleksander Owczarz, Jeffrey Yung
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Patent number: 6716301Abstract: A semiconductor manufacturing apparatus includes a unit for generating a plasma in a vacuum chamber, a wafer stage for holding a semiconductor wafer introduced into the vacuum chamber, a high frequency power supply for applying a high frequency voltage to the wafer stage, a wafer voltage probe for measuring a voltage of the semiconductor wafer at a rear surface of the semiconductor wafer, a current and voltage probe for measuring at least one of a voltage and a current applied to the wafer stage from the high frequency power supply, and a control portion. The control portion obtains an impedance from the semiconductor wafer to earth through the plasma on the basis of a voltage value of the semiconductor wafer measured by the wafer voltage probe, and a voltage value or a current value measured by the current and voltage probe, and performs a processing based on the obtained impedance.Type: GrantFiled: March 7, 2001Date of Patent: April 6, 2004Assignee: Hitachi, Ltd.Inventors: Seiichiro Kanno, Ryoji Nishio, Tsutomu Tetsuka, Junichi Tanaka, Hideyuki Yamamoto, Kazuyuki Ikenaga, Saburou Kanai
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Patent number: 6716298Abstract: A tank is set up to hold a precise volume of acid by first adjusting an overflow pipe to establish a volume that is larger than the desired volume and then adjusting the vertical position of a volume occupying element that extends above and below the surface of the acid. The apparatus includes a drain pipe for directing the acid to a tank that holds deionized water that the acid is mixed with. The bath is used for etching a silicon dioxide layer on a semiconductor wafer.Type: GrantFiled: September 27, 2002Date of Patent: April 6, 2004Assignee: Chartered Semiconductor Manufacturing Ltd.Inventor: Kam Beng Chong