Patents Assigned to Tokyo Electron Limited
  • Publication number: 20100183827
    Abstract: A plasma processing apparatus capable of reducing the use amount of a dielectric member is provided. The plasma processing apparatus 1 includes a metal processing chamber 4 configured to accommodate therein a substrate G to be plasma-processed; an electromagnetic wave source 34 that supplies an electromagnetic wave necessary to excite plasma in the processing chamber 4; one or more dielectric members 25 provided on a bottom surface of a cover 3 of the processing chamber 4 and configured to transmit the electromagnetic wave supplied from the electromagnetic wave source 34 into the inside of the processing chamber 4, a portion of each dielectric member 25 being exposed to the inside of the processing chamber 4; and a surface wave propagating section 51 installed adjacent to the dielectric member 25 and configured to propagate the electromagnetic wave along a metal surface exposed to the inside of the processing chamber 4.
    Type: Application
    Filed: June 11, 2008
    Publication date: July 22, 2010
    Applicants: TOKYO ELECTRON LIMITED, TOHOKU UNIVERSITY
    Inventors: Masaki Hirayama, Tadahiro Ohmi, Takahiro Horiguchi
  • Publication number: 20100181294
    Abstract: A plasma etching apparatus includes a vacuum processing chamber; a lower electrode, i.e., a mounting table for mounting the substrate, provided in the vacuum processing chamber; an upper electrode provided to face the lower electrode; a gas supply unit for supplying a processing gas to the vacuum processing chamber; a high frequency power supply unit for supplying a high frequency power to the lower electrode; and a focus ring provided on the lower electrode to surround a periphery of the substrate. In a method for performing a plasma etching on a substrate by using the plasma etching apparatus, a plasma is generated in the vacuum processing chamber to perform the plasma etching on the substrate by using the plasma after the focus ring is heated by supplying a high frequency power from the high frequency power supply unit to the lower electrode under a condition that no plasma is generated.
    Type: Application
    Filed: January 11, 2010
    Publication date: July 22, 2010
    Applicant: TOKYO ELECTRON LIMITED
    Inventor: Hiroshi TSUJIMOTO
  • Publication number: 20100184267
    Abstract: To form a good quality silicon oxide film provided with both a superior Qbd characteristic and Rd characteristic, a wafer W is loaded into a plasma treatment apparatus where the surface of a silicon layer 501 of the wafer W is treated by plasma oxidation to form on the silicon layer 501 to a film thickness T1 a silicon oxide film 503. Next, the wafer W on which the silicon oxide film 503 is formed is transferred to a thermal oxidation treatment apparatus where the silicon oxide film 503 is treated by thermal oxidation to thereby form a silicon oxide film 505 having a target film thickness T2.
    Type: Application
    Filed: August 31, 2009
    Publication date: July 22, 2010
    Applicants: TOKYO ELECTRON LIMITED, University of Tsukuba
    Inventors: Yoshiro Kabe, Junichi Kitagawa, Kikuo Yamabe
  • Patent number: 7759598
    Abstract: A method for hydrogen sintering a substrate including a semiconductor device formed thereon comprises the steps of exciting a processing gas comprising a noble gas and a hydrogen gas to form a plasma comprising hydrogen radicals and hydrogen ions, and exposing the substrate to the plasma. A preferred method comprises forming a gate insulation film on a substrate, forming a polysilicon electrode on the gate insulation film, and exposing the polysilicon electrode to an atmosphere comprising hydrogen radicals and hydrogen ions.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: July 20, 2010
    Assignee: Tokyo Electron Limited
    Inventors: Takuya Sugawara, Seiji Matsuyama, Masaru Sasaki
  • Patent number: 7757633
    Abstract: A magnetically enhanced plasma is produced with a permanent magnet assembly adjacent to a radio frequency (RF) biased wafer support electrode in a vacuum processing chamber of a semiconductor wafer processing apparatus. An annular peripheral region is provided on the wafer support around the perimeter of the wafer being processed. A magnet arrangement using a plurality of magnet rings forms a magnetic tunnel over the peripheral region at which the plasma is generated away from the wafer. The magnetic field has components parallel to the substrate support surface over the annular peripheral region but is generally isolated from the wafer. Preferably, the magnetic field has a flat portion parallel to the support surface in the peripheral region. Plasma propagates by diffusion from the peripheral region across the wafer surface. The magnets can be manipulated to optimize plasma uniformity adjacent the substrate being processed.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: July 20, 2010
    Assignee: Tokyo Electron Limited
    Inventor: Derrek Andrew Russell
  • Patent number: 7759762
    Abstract: A semiconductor device includes a Si crystal having a crystal surface in the vicinity of a (111) surface, and an insulation film formed on said crystal surface, at least a part of said insulation film comprising a Si oxide film containing Kr or a Si nitride film containing Ar or Kr.
    Type: Grant
    Filed: November 15, 2004
    Date of Patent: July 20, 2010
    Assignees: Tokyo Electron Limited
    Inventors: Tadahiro Ohmi, Shigetoshi Sugawa, Katsuyuki Sekine, Yuji Saito
  • Patent number: 7758920
    Abstract: A silicon-containing insulating film is formed on a target substrate by CVD, in a process field to be selectively supplied with a purge gas, a first process gas containing a silane family gas, and a second process gas containing a gas selected from the group consisting of nitriding, oxynitriding, and oxidizing gases. This method alternately includes first to fourth steps. The first, second, third, and fourth steps perform supply of the first process gas, purge gas, second process gas, and purge gas, respectively, while stopping supply of the other two gases. The process field is continuously vacuum-exhausted over the first to fourth steps through an exhaust passage provided with an opening degree adjustment valve. An opening degree of the valve in the first step is set to be 5 to 95% of that used in the second and fourth steps.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: July 20, 2010
    Assignee: Tokyo Electron Limited
    Inventors: Kazuhide Hasebe, Mitsuhiro Okada, Pao-Hwa Chou, Jun Ogawa, Chaeho Kim, Kohei Fukushima, Toshiki Takahashi, Jun Sato
  • Patent number: 7758340
    Abstract: A heating device provided with a cooling plate and a heating plate is formed in a low height, and floats a substrate above the cooling plate and the heating plate and moves the substrate horizontally between the cooling plate and the heating plate by the pressure of a gas. A heating device 2 includes a cooling plate 3 provided with flotation gas spouting ports 3a, and a heating plate provided with flotation gas spouting ports. The flotation gas spouting ports 3a and 3b are arranged along a wafer moving passage and are formed so as to spout the gas obliquely upward toward a first end of the wafer moving passage on the side of the cooling plate. A pushing member 51 is brought into contact with a back part of a wafer W with respect to a direction in which the wafer W is moved to move the wafer W in a direction toward the heating plate 6 opposite a direction in which the flotation gas is spouted.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: July 20, 2010
    Assignee: Tokyo Electron Limited
    Inventors: Masami Akimoto, Shinichi Hayashi, Naruaki Iida, Hiroaki Inadomi
  • Patent number: 7758929
    Abstract: In a plasma processing apparatus in which a radio-frequency power from a radio-frequency power source is supplied to at least one of an upper electrode and a lower electrode disposed to vertically face each other in a process vessel, to thereby generate, in the process vessel, plasma with which a substrate is processed, a chemical component emitting member which is caused to emit a chemical component necessary for processing the substrate into the process vessel by entrance of ions in the plasma generated in the process vessel is provided in the process vessel in an exposed state, and an impedance varying circuit varying impedance on the chemical component emitting member side of the plasma generated in the process vessel to frequency of the radio-frequency power source is connected to the chemical component emitting member.
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: July 20, 2010
    Assignee: Tokyo Electron Limited
    Inventors: Yohei Yamazawa, Noriaki Imai
  • Patent number: 7761178
    Abstract: Provided is a method of designing an optical metrology system for measuring structures on a workpiece wherein the optical metrology system is configured to meet a plurality of design goals. The design of the optical metrology system is optimized by using collected design goal data in comparison to the set plurality of design goals. In one embodiment, the optical metrology system is used for stand alone metrology systems. In another embodiment, the optical metrology system is integrated with a fabrication cluster in semiconductor manufacturing. At least one parameter determined from a diffraction signal measured using the optical metrology system is transmitted to the fabrication cluster. The at least one parameter is used to modify at least one process variable or equipment setting of the fabrication cluster.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: July 20, 2010
    Assignee: Tokyo Electron Limited
    Inventors: Xinkang Tian, Manuel Madriaga, Ching-Ling Meng, Mihail Mihaylov
  • Patent number: 7761250
    Abstract: Provided is a method of designing an optical metrology system for measuring structures on a workpiece where the optical metrology system is configured to meet two or more design goals. The design of the optical metrology system is optimized by using collected design goal data in comparison to the set two or more design goals. In one embodiment, the optical metrology system is used for stand alone metrology systems. In another embodiment, the optical metrology system is integrated with a fabrication cluster in semiconductor manufacturing.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: July 20, 2010
    Assignee: Tokyo Electron Limited
    Inventors: Xinkang Tian, Manuel Madriaga, Ching-Ling Meng, Mihail Mihaylov
  • Patent number: 7759249
    Abstract: A method of using a post-etch treatment system for removing photoresist and etch residue formed during an etching process is described. For example, the etch residue can include halogen containing material. The post-etch treatment system comprises a vacuum chamber, a radical generation system coupled to the vacuum chamber, a radical gas distribution system coupled to the radical generation system and configured to distribute reactive radicals above a substrate, and a high temperature pedestal coupled to the vacuum chamber and configured to support the substrate. The method comprises introducing a NxOy based process gas to the radical generation system.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: July 20, 2010
    Assignee: Tokyo Electron Limited
    Inventor: Vaidyanathan Balasubramaniam
  • Patent number: 7757625
    Abstract: It is an object to provide a method for forming a thin film which can be uniformly and precisely planarized without a high-loaded process as in a chemical mechanical polishing method and to provide a device used for the method. In a method for forming a thin film on a surface of a-semiconductor wafer as a substrate to be processed by supplying a coating solution to the wafer having asperities on the surface thereof, a thin film of a coating solution is planarized by placing the wafer having the thin film formed on the surface thereof in a solvent gas atmosphere generated in a treatment chamber, then spraying a solvent gas toward the surface of the wafer from a solvent-gas-supplying nozzle and, simultaneously, relatively moving the wafer and/or the solvent-gas-supplying nozzle in directions parallel to each other.
    Type: Grant
    Filed: October 25, 2006
    Date of Patent: July 20, 2010
    Assignee: Tokyo Electron Limited
    Inventors: Shouichi Terada, Tsuyoshi Mizuno, Takeshi Uehara
  • Patent number: 7759746
    Abstract: A semiconductor device, such as a transistor or capacitor, is provided. The device includes a substrate, a gate dielectric over the substrate, and a conductive gate electrode film over the gate dielectric. The gate dielectric includes a mixed rare earth aluminum oxide, nitride or oxynitride film containing aluminum and at least two different rare earth metal elements.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: July 20, 2010
    Assignee: Tokyo Electron Limited
    Inventor: Robert D. Clark
  • Patent number: 7757626
    Abstract: In the present invention, a holding table incorporating a heater is provided, for example, in a treatment container of a planarization unit. A pressing plate having a lower surface formed flat is disposed above the holding table. The pressing plate is movable in the vertical direction and can lower to the holding table to press a resist film on the substrate from above. The pressing plate intermittently presses the upper surface of the resist film to planarize the upper surface while the heater is heating the substrate on the holding table at a predetermined temperature to dry the resist film. According to the present invention, a coating film applied on the substrate can be sufficiently planarized and dried.
    Type: Grant
    Filed: August 16, 2006
    Date of Patent: July 20, 2010
    Assignee: Tokyo Electron Limited
    Inventors: Hiroshi Shinya, Shouichi Terada, Tsuyoshi Mizuno, Yukihiro Wakamoto
  • Publication number: 20100175989
    Abstract: A deposition system is provided to avoid cross contamination in each layer formed in a manufacturing process of organic electroluminescent device and the like, and to reduce footprint and to enhance productivity. Provided is a deposition apparatus 13 for forming a film on a substrate G, which includes a first deposition mechanism 35 for forming a first layer in a processing chamber 30, and a second deposition mechanism 36 for forming a second layer in the processing chamber 30. The first deposition mechanism 35 includes: a nozzle 34 disposed at an inside of the processing chamber 30, for supplying vapor of a deposition material to the substrate; a vapor generator 45 disposed at an outside of the processing chamber, for generating the vapor of the deposition material; and a line for transporting the vapor of the deposition material generated from the vapor generator 45 to the nozzle 34.
    Type: Application
    Filed: August 8, 2007
    Publication date: July 15, 2010
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Kazuki Moyama, Toshihisa Nozawa
  • Publication number: 20100178775
    Abstract: A shower plate is disposed in a processing chamber in a plasma processing apparatus, and plasma excitation gas is released into the processing chamber so as to generate plasma. A ceramic member having a plurality of gas release holes having a diameter of 20 ?m to 70 ?m, and/or a porous gas-communicating body having pores having a maximum diameter of not more than 75 ?m communicating in the gas-communicating direction are sintered and bonded integrally with the inside of each of a plurality of vertical holes which act as release paths for the plasma excitation gas.
    Type: Application
    Filed: September 26, 2007
    Publication date: July 15, 2010
    Applicants: TOKYO ELECTRON LIMITED, NATIONAL UNIVERSITY CORPORATION TOHOKU UNIVERSITY
    Inventors: Masahiro Okesaku, Tadahiro Ohmi, Tetsuya Goto, Takaaki Matsuoka, Toshihisa Nozawa, Atsutoshi Inokuchi, Kiyotaka Ishibashi
  • Publication number: 20100175713
    Abstract: A method of cleaning a plasma processing apparatus for processing a target in a process container, which is vacuum-evacuatable, using plasma, includes performing a first cleaning process by supplying a cleaning gas into the process container to generate plasma and maintaining the pressure in the process container at a first pressure, and performing a second cleaning process by supplying a cleaning gas into the process container to generate plasma and maintaining the pressure in the process container at a second pressure that is higher than the first pressure. Accordingly, the plasma processing apparatus can be efficiently and rapidly cleaned without damaging at least one of the group consisting of inner surfaces of the process container and members in the process container.
    Type: Application
    Filed: February 18, 2008
    Publication date: July 15, 2010
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Noriaki Fukiage, Shinji Komoto, Hiroyuki Takaba, Kiyotaka Ishibashi
  • Publication number: 20100177455
    Abstract: In a repairing method for an electrostatic chuck device in which at least an adhesive layer and an attracting layer are provided on a metal base, a side surface of an eroded adhesive layer is wound with a string-like adhesive and thermal compression is performed thereafter. A repairing apparatus for an electrostatic chuck device, which is used in the repairing method, includes a rotatable table for rotating the electrostatic chuck device and a bobbin for supplying the adhesive to the adhesive layer.
    Type: Application
    Filed: January 13, 2010
    Publication date: July 15, 2010
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Ken Yoshioka, Syuichi Takahashi, Yasuharu Sasaki
  • Patent number: D620085
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: July 20, 2010
    Assignee: Tokyo Electron Limited
    Inventor: Mitsuhiro Okada