Having Glow Discharge Electrode Gas Energizing Means Patents (Class 156/345.43)
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Patent number: 8056504Abstract: A vacuum vessel and at least two electrodes define an internal process space. At least one power supply is connectable with the electrodes. A substrate holder holds a substrate to be treated in the internal process space. At least one of the electrodes has along a first cross section a concave profile and has along a second cross section a convex profile, the first cross section being parallel to the second cross section. Gas is provided to the space through a gas inlet. Power is provided to the electrodes and the substrate is treated.Type: GrantFiled: February 19, 2010Date of Patent: November 15, 2011Assignee: Oerlikon Solar AG, TrubbachInventors: Jacques Schmitt, Laurent Sansonnens, Mustapha Elyaakoubi, Michael Irzyk
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Patent number: 8056503Abstract: An etching chamber 1 incorporates a focus ring 9 so as to surround a semiconductor wafer W provided on a lower electrode 4. The plasma processor is provided with an electric potential control DC power supply 33 to control the electric potential of this focus ring 9, and so constituted that the lower electrode 4 is supplied with a DC voltage of, e.g., ?400 to ?600 V to control the electric potential of the focus ring 9. This constitution prevents surface arcing from developing along the surface of a substrate to be processed.Type: GrantFiled: July 2, 2002Date of Patent: November 15, 2011Assignee: Tokyo Electron LimitedInventors: Akihiro Kikuchi, Satoshi Kayamori, Shinya Shima, Yuichiro Sakamoto, Kimihiro Higuchi, Kaoru Oohashi, Takehiro Ueda, Munehiro Shibuya, Tadashi Gondai
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Publication number: 20110272100Abstract: When a substrate to be processed placed on a mounting table disposed in a process chamber is processed by plasma generated in the process chamber by application of high-frequency voltage, an electric field causing ions generated by the plasma to accelerate toward a lower surface of a peripheral edge portion of the substrate to be processed placed on the mounting table is formed under the peripheral edge portion of the substrate to be processed, and the ions consequently collide with the lower surface of the peripheral edge portion, which reduces the occurrence of deposition.Type: ApplicationFiled: July 5, 2011Publication date: November 10, 2011Applicant: TOKYO ELECTRON LIMITEDInventor: Akira KOSHIISHI
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Patent number: 8047158Abstract: A substrate processing apparatus comprises a reaction chamber which is to accommodate stacked substrates, a gas introducing portion, and a buffer chamber, wherein the gas introducing portion is provided along a stacking direction of the substrates, and introduces substrate processing gas into the buffer chamber, the buffer chamber includes a plurality of gas-supply openings provided along the stacking direction of the substrates, and the processing gas introduced from the gas introducing portion is supplied from the gas-supply openings to the reaction chamber.Type: GrantFiled: October 31, 2007Date of Patent: November 1, 2011Assignee: Hitachi Kokusai Electric Inc.Inventors: Tadashi Kontani, Kazuyuki Toyoda, Taketoshi Sato, Toru Kagaya, Nobuhito Shima, Nobuo Ishimaru, Masanori Sakai, Kazuyuki Okuda, Yasushi Yagi, Seiji Watanabe, Yasuo Kunii
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Publication number: 20110253312Abstract: The various embodiments provide apparatus and methods of removal of unwanted deposits near the bevel edge of substrates to improve process yield. The embodiments provide apparatus and methods with center and edge gas feeds as additional process knobs for selecting a most suitable bevel edge etching processes to push the edge exclusion zone further outward towards the edge of substrates. Further the embodiments provide apparatus and methods with tuning gas(es) to change the etching profile at the bevel edge and using a combination of center and edge gas feeds to flow process and tuning gases into the chamber. Both the usage of tuning gas and location of gas feed(s) affect the etching characteristics at bevel edge. Total gas flow, gap distance between the gas delivery plate and substrate surface, pressure, and types of process gas(es) are also found to affect bevel edge etching profiles.Type: ApplicationFiled: January 28, 2008Publication date: October 20, 2011Inventors: Tong Fang, Yunsang Kim, Andrew D. Bailey, III, Olivier Rigoutat, George Stojakovic
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Patent number: 8038833Abstract: In a plasma processing apparatus, a member for propagating high frequency from a high frequency power supply and/or to which the high frequency is applied. A power feed rod is electromagnetically shielded between a matching unit and a bottom plate of a chamber by a coaxial cylindrical conductor connected to a ground potential. A surface potential system disposed in an appropriate distance from the power feed rod in radius direction is installed in the cylindrical conductor, and measures in a non-contact state the electrostatic surface potential of the power feed rod through electrostatic capacitance and provides a controller with a surface potential detection signal including surface potential measurement value information. The controller performs a required signal processing or operation processing on the basis of the surface potential detection signal from the surface potential system, thereby obtaining the measurement value of the DC potential on the power feed rod.Type: GrantFiled: July 21, 2009Date of Patent: October 18, 2011Assignee: Tokyo Electron LimitedInventors: Satoshi Maebashi, Toshihiro Hayami, Naoyuki Umehara
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Patent number: 8038836Abstract: A plasma processing apparatus includes a barrier wall member disposed between a plasma generation chamber and a processing chamber to separate the plasma generation chamber from the processing chamber. The barrier wall member assumes a fin structure achieved by disposing in a radial pattern numerous plate-like fin members extending from a central area thereof toward a peripheral edge. An upper end portion of each fin member overlaps a lower end portion of an adjacent fin member. The fin members are disposed with gaps formed between them and are made to range upward with a tilt along the circumferential direction.Type: GrantFiled: September 2, 2008Date of Patent: October 18, 2011Assignee: Tokyo Electron LimitedInventor: Daisuke Hayashi
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Publication number: 20110249338Abstract: A method for manufacturing a microfabricated member includes the steps of forming an inorganic resist layer on a stamper having a curved surface, exposing and developing the inorganic resist layer formed on the stamper, so as to form a pattern on the inorganic resist layer, and placing the stamper, which is provided with the pattern on the inorganic resist layer, on an electrode having a curved surface nearly identical or analogous to the curved surface of the stamper and etching the stamper to form an uneven shape on the stamper surface, so as to produce a microfabricated member.Type: ApplicationFiled: December 17, 2009Publication date: October 13, 2011Applicant: SONY CORPORATIONInventors: Sohmei Endoh, Kazuya Hayashibe, Koichiro Shimizu
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Patent number: 8033245Abstract: An apparatus for supporting a substrate within a processing chamber is provided. In one aspect, a substrate support member is provided comprising a housing having a bore formed therethrough, a support pin at least partially disposed within the bore, and a plurality of bearing elements disposed about the housing. In one aspect, the bearing elements comprise a roller having a central bore formed therethrough, a contoured outer surface, and a shaft at least partially disposed through the central bore. In another aspect, the bearing elements comprise a ball assembly comprising a larger spherical member and four smaller spherical members arranged about the larger spherical member.Type: GrantFiled: February 12, 2004Date of Patent: October 11, 2011Assignee: Applied Materials, Inc.Inventors: Shinichi Kurita, Suhail Anwar, Toshio Kiyotake
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Patent number: 8033246Abstract: An arc suppression arrangement suppresses arcs in a gas discharge device that is operated with an alternating voltage from a power supply. The arc suppression arrangement includes an arc suppression device and an arc identification device that controls the arc suppression device. The arc suppression device includes at least one controllable resistor that is connected in series in an electrical line that extends from an alternating voltage source to an electrode of the gas discharge device. An arc can thereby be prevented from being provided with energy.Type: GrantFiled: May 5, 2006Date of Patent: October 11, 2011Assignee: HUETTINGER Elektronik GmbH + Co. KGInventors: Peter Wiedemuth, Markus Bannwarth, Lothar Wolf
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Patent number: 8028652Abstract: A plasma processing apparatus comprises a processing chamber in which a plurality of substrates are stacked and accommodated; a pair of electrodes extending in the stacking direction of the plurality of substrates, which are disposed at one side of the plurality of substrates in said processing chamber, and to which high frequency electricity is applied; and a gas supply member which supplies processing gas into a space between the pair of electrodes.Type: GrantFiled: March 20, 2007Date of Patent: October 4, 2011Assignee: Hitachi Kokusai Electric Inc.Inventors: Kazuyuki Toyoda, Yasuhiro Inokuchi, Motonari Takebayashi, Tadashi Kontani, Nobuo Ishimaru
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Patent number: 8028654Abstract: An apparatus and method for initiating a process gas plasma. A conductive plate having a plurality of conductive fingers is positioned in a microwave applicator. An arc forms between the conductive fingers to initiate the formation of a plasma. A transport mechanism may convey process materials through the plasma. A spray port may be provided to expel processed materials.Type: GrantFiled: September 8, 2009Date of Patent: October 4, 2011Assignee: Babcock & Wilcox Technical Services Y-12, LLCInventors: Edward B. Ripley, Roland D. Seals, Jonathan S. Morrell
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Publication number: 20110226421Abstract: An intensity distribution of an electric field of a high frequency power used for generating plasma is controlled by using an electrode made of a homogeneous material and a moving body. There is provided a plasma processing apparatus for introducing a processing gas into an evacuable processing chamber 100 and generating plasma by a high frequency power and performing a plasma process on a wafer W by the plasma. The plasma processing apparatus includes a dielectric base 105a having a multiple number of fine holes A; a varying member 200 as the moving body provided with a multiple number of rod-shaped members B capable of being inserted into and separated from the fine holes A; and a driving mechanism 215 configured to drive the varying member 200 to allow the rod-shaped members B to be inserted into and separated from the fine holes A.Type: ApplicationFiled: March 14, 2011Publication date: September 22, 2011Applicant: TOKYO ELECTRON LIMITEDInventor: Daisuke Hayashi
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Publication number: 20110226420Abstract: There is provided a plasma processing apparatus including a processing chamber 100 configured to perform a plasma process on a wafer W; an upper electrode 105 and a lower electrode 110 arranged to face each other in the processing chamber 100 and configured to form a processing space therebetween; and a high frequency power supply 150 connected with at least one of the upper electrode 105 and the lower electrode 110 and configured to output a high frequency power into the processing chamber 100. The upper electrode 105 includes an upper base 105a made of a dielectric material, and a plurality of fine holes A having a diameter equal to or less than twice a thickness of a sheath are formed in the upper base 105a.Type: ApplicationFiled: March 14, 2011Publication date: September 22, 2011Applicant: TOKYO ELECTRON LIMITEDInventors: Daisuke Hayashi, Shoichiro Matsuyama, Koichi Murakami
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Patent number: 8020514Abstract: A plasma processing apparatus comprises a processing chamber in which a plurality of substrates are stacked and accommodated; a pair of electrodes extending in the stacking direction of the plurality of substrates, which are disposed at one side of the plurality of substrates in said processing chamber, and to which high frequency electricity is applied; and a gas supply member which supplies processing gas into a space between the pair of electrodes.Type: GrantFiled: January 21, 2009Date of Patent: September 20, 2011Assignee: Hitachi Kokusai Electric Inc.Inventors: Kazuyuki Toyoda, Yasuhiro Inokuchi, Motonari Takebayashi, Tadashi Kontani, Nobuo Ishimaru
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Publication number: 20110220609Abstract: There are provided a plasma etching method and a plasma etching apparatus capable of independently controlling distributions of line widths and heights of lines in a surface of a wafer. The plasma etching method for performing a plasma etching on a substrate W by irradiating plasma containing charged particles and neutral particles to the substrate W includes controlling a distribution of reaction amounts between the substrate W and the neutral particles in a surface of the substrate W by adjusting a temperature distribution in the surface of the substrate W supported by a support 105, and controlling a distribution of irradiation amounts of the charged particles in the surface of the substrate W by adjusting a gap between the substrate W supported by the support 105 and an electrode 120 provided so as to face the support 105.Type: ApplicationFiled: March 10, 2011Publication date: September 15, 2011Applicant: TOKYO ELECTRON LIMITEDInventors: Hidetami Yaegashi, Masanobu Honda, Akitaka Shimizu
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Publication number: 20110220289Abstract: A member for a plasma treatment apparatus is provided, which has excellent anti-sticking properties, is suitable, for example, as a lower electrode in CVD apparatuses, has a stable shape as the lower electrode, and can suppress abnormal discharge during plasma treatment. The member for a plasma treatment apparatus comprises a base material formed of an aluminum alloy having a smoothly machined surface and a treated anodic oxide coating provided on the surface of the base material and formed by hydrating an anodic oxide coating formed on the surface of the base material to form microcracks therein. The anodic oxide coating has a leak current density of more than 0.9×10?5 A/cm2 at an applied voltage of 100 V, a thickness of not less than 3 ?m, an arithmetic average surface roughness of less than 1 ?m, and a dissolution rate of less than 100 mg/dm2/15 min in a phosphoric and chromic acid immersion test. The flatness of the surface on which the anodic oxide coating has been formed is not more than 50 ?m.Type: ApplicationFiled: December 2, 2008Publication date: September 15, 2011Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Toshiyuki Tanaka, Jun Hisamoto, Hiroto Sugano
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Patent number: 8016974Abstract: In a plasma treatment apparatus for performing plasma treatment by accommodating a substrate in a treatment chamber, a fixed guide 12 and a movable guide 13 made of a ceramic are arrayed in an X direction (in a substrate transporting direction) for guiding both side end portions of the substrate held on a ceramic-made mounting plate 10, and both end portions of the movable guide 13 are supported by supporting members. In this construction, these supporting members are fitted to fixed members 15A and 15B arranged in a Y direction with the mounting plate 10 placed therebetween, such that an interval in the Y direction is adjustable. Consequently, the ceramic-made guide member 13 can be mounted and demounted without directly bolting it, and it is possible to prevent the generation of an abnormal discharge by using as objects multiple product thin-type substrates with different widthwise dimensions.Type: GrantFiled: February 10, 2006Date of Patent: September 13, 2011Assignee: Panasonic CorporationInventors: Tetsuo Korenaga, Ryuji Nagadome
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Patent number: 8012305Abstract: An exhaust assembly is described for use in a plasma processing system, whereby secondary plasma is formed in the exhaust assembly between the processing space and chamber exhaust ports in order to reduce plasma leakage to a vacuum pumping system, or improve the uniformity of the processing plasma, or both. The exhaust assembly includes a powered exhaust plate in combination with a ground electrode is utilized to form the secondary plasma surrounding a peripheral edge of a substrate treated in the plasma processing system.Type: GrantFiled: August 22, 2008Date of Patent: September 6, 2011Assignee: Tokyo Electron LimitedInventor: Hiroyuki Takahashi
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Patent number: 8007632Abstract: A semiconductor manufacturing apparatus includes a chamber, a gas supplier, a vacuum pump, an electrode, a conductive knitted wire mesh and a radio frequency power supply. The electrode is placed outside of the chamber and fixed to the chamber. The gas supplier supplies gas into the chamber. The vacuum pump exhausts the chamber. The radio frequency power supply supplies radio frequency power to the electrode through the conductive knitted wire mesh.Type: GrantFiled: April 4, 2008Date of Patent: August 30, 2011Assignee: Renesas Electronics CorporationInventor: Keiichirou Takehara
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Publication number: 20110206833Abstract: An extension electrode with enhanced durability and etching rate for plasma bevel etchers. The extension electrode comprises a plasma exposed truncated conical surface on an annular aluminum body. The aluminum body can roughened prior to anodization and coated with a ceramic material such as yttria.Type: ApplicationFiled: February 11, 2011Publication date: August 25, 2011Applicant: Lam Research CorporationInventors: Gregory Sexton, Paul Aponte
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Patent number: 7992518Abstract: A showerhead for use in a capacitively-coupled plasma chamber and made of low resistivity bulk layer coated with CVD SiC. The bulk low resitivity material may be, for example, graphite, Silicon Carbide (SiC), converted graphite, SiC+C, etc. Sintered SiC may be used as the bulk material coated with CVD SiC to provide a showerhead that is suitable for use in a capacitively-coupled plasma chamber.Type: GrantFiled: March 21, 2007Date of Patent: August 9, 2011Assignee: Advanced Micro-Fabrication Equipment, Inc. AsiaInventors: Robert Wu, Tuqiang Ni
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Publication number: 20110186227Abstract: The embodiments provide structures and mechanisms for removal of etch byproducts, dielectric films and metal films on and near the substrate bevel edge, and chamber interior to avoid the accumulation of polymer byproduct and deposited films and to improve process yield. In one example, a chamber for wafer bevel edge cleaning is provided. The chamber includes a bottom electrode having a bottom electrode surface for supporting the wafer when present. Also included is a top edge electrode surrounding an insulating plate. The insulator plate is opposing the bottom electrode. The top edge electrode is electrically grounded and has a down-facing L shape. Further included in the chamber is a bottom edge electrode that is electrically grounded and spaced apart from the bottom electrode. The bottom edge electrode is disposed to encircle the bottom electrode. The bottom edge electrode is oriented to oppose the down-facing L shape of the top edge electrode.Type: ApplicationFiled: April 12, 2011Publication date: August 4, 2011Applicant: Lam Research CorporationInventors: Gregory S. Sexton, Andrew D. Bailey, III, Andras Kuthi
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Patent number: 7988815Abstract: RF ground return current flow is diverted away from asymmetrical features of the reactor chamber by providing bypass current flow paths. One bypass current flow path avoids the pumping port in the chamber floor, and comprises a conductive symmetrical grill extending from the side wall to the grounded pedestal base. Another bypass current flow path avoids the wafer slit valve, and comprises an array of conductive straps bridging the section of the sidewall occupied by the slit valve.Type: GrantFiled: July 26, 2007Date of Patent: August 2, 2011Assignee: Applied Materials, Inc.Inventors: Shahid Rauf, Kenneth S. Collins, Kallol Bera, Kartik Ramaswamy, Hiroji Hanawa, Andrew Nguyen, Steven C. Shannon, Lawrence Wong, Satoru Kobayashi, Troy S. Detrick, James P. Cruse
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Patent number: 7988814Abstract: When a substrate to be processed placed on a mounting table disposed in a process chamber is processed by plasma generated in the process chamber by application of high-frequency voltage, an electric field causing ions generated by the plasma to accelerate toward a lower surface of a peripheral edge portion of the substrate to be processed placed on the mounting table is formed under the peripheral edge portion of the substrate to be processed, and the ions consequently collide with the lower surface of the peripheral edge portion, which reduces the occurrence of deposition.Type: GrantFiled: March 13, 2007Date of Patent: August 2, 2011Assignee: Tokyo Electron LimitedInventor: Akira Koshiishi
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Patent number: 7988816Abstract: A plasma etching apparatus includes an upper electrode and a lower electrode, between which plasma of a process gas is generated to perform plasma etching on a wafer W. The apparatus further comprises a cooling ring disposed around the wafer, a correction ring disposed around the cooling ring, and a variable DC power supply directly connected to the correction ring, the DC voltage being preset to provide the correction ring with a negative bias, relative to ground potential, for attracting ions in the plasma and to increase temperature of the correction ring to compensate for a decrease in temperature of a space near the edge of the target substrate due to the cooling ring.Type: GrantFiled: June 21, 2005Date of Patent: August 2, 2011Assignee: Tokyo Electron LimitedInventors: Akira Koshiishi, Masaru Sugimoto, Kunihiko Hinata, Noriyuki Kobayashi, Chishio Koshimizu, Ryuji Ohtani, Kazuo Kibi, Masashi Saito, Naoki Matsumoto, Yoshinobu Ooya, Manabu Iwata, Daisuke Yano, Yohei Yamazawa, Hidetoshi Hanaoka, Toshihiro Hayami, Hiroki Yamazaki, Manabu Sato
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Publication number: 20110162799Abstract: A plasma processing apparatus includes a depressurizable processing chamber; an electrode provided in the processing chamber; and a high frequency power supply for supplying a high frequency power into the processing chamber to thereby generating a plasma. Further, the electrode includes a base formed of a dielectric material; a dielectric body buried in the base and formed of the same dielectric material as the base; and a conductive adhesive layer provided in a bonding portion between the base and the dielectric body, the conductive adhesive layer bonding together and fixing the base and the dielectric body to each other.Type: ApplicationFiled: December 28, 2010Publication date: July 7, 2011Applicant: TOKYO ELECTRON LIMITEDInventor: Daisuke HAYASHI
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Publication number: 20110162801Abstract: A plasma processing apparatus (5) comprises an outer shell (51) which is provided with a reaction chamber (52) in the interior, a bottom electrode which is arranged in the reaction chamber (52) and a cantilever support device (53) which goes through the outer shell (51) and supports the bottom electrode. The cantilever support device (53) is pivotally mounted on the side wall of the outer shell (51) and can rotate in the outer shell (51). The plasma processing apparatus (5) further comprises a locating device so as to selectively fix the relative position of the cantilever support device (53) and the outer shell (51).Type: ApplicationFiled: September 3, 2009Publication date: July 7, 2011Applicant: Beijing NMC Co., Ltd.Inventor: Fenggang Zhang
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Publication number: 20110162802Abstract: A plasma processing apparatus for performing a plasma process on a target substrate includes a process container configured to accommodate the target substrate and to reduce pressure therein. A first electrode is disposed within the process container. A supply system is configured to supply a process gas into the process container. An electric field formation system is configured to form an RF electric field within the process container so as to generate plasma of the process gas. A number of protrusions are discretely disposed on a main surface of the first electrode and protrude toward a space where the plasma is generated.Type: ApplicationFiled: March 16, 2011Publication date: July 7, 2011Inventors: Katsuya OKUMURA, Shinji HIMORI, Kazuya NAGASEKI, Hiroki MATSUMARU, Shoichiro MATSUYAMA, Toshiki TAKAHASHI
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Publication number: 20110158894Abstract: A method for manufacturing a carbon nanotube (CNT) of a predetermined length is disclosed. The method includes generating an electric field to align one or more CNTs and severing the one or more aligned CNTs at a predetermined location. The severing each of the aligned CNTs may include etching the predetermined location of the one or more aligned CNTs and applying a voltage across the one or more etched CNTs.Type: ApplicationFiled: December 28, 2009Publication date: June 30, 2011Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATIONInventor: Kwangyeol LEE
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Publication number: 20110146910Abstract: Uniformity of a process on a substrate is improved.Type: ApplicationFiled: June 5, 2009Publication date: June 23, 2011Applicants: TOKYO ELECTRON LIMITED, TOHOKU UNIVERSITYInventors: Masaki Hirayama, Tadahiro Ohmi
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Patent number: 7963248Abstract: A plasma generator includes a gas supply member configured to supply source gas and a plurality of electrodes for generating plasma using the source gas. The plurality of electrodes have a long rod shape in a first direction and are arranged abreast in a second direction vertical to the first direction to be spaced apart from each other at the same height. A spaced distance between electrodes is adjusted by means of a distance adjusting unit including a first connector connected to a first electrode, a second connector connected to a second electrode, and a first shaft pin connecting the first and second connectors to each other. The first and second connectors rotate on the first shaft pin to adjust a spaced distance between the first and second electrodes.Type: GrantFiled: July 31, 2007Date of Patent: June 21, 2011Assignee: Semes Co. LtdInventor: Yi Jung Kim
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Publication number: 20110143537Abstract: Provided are a method of fabricating a semiconductor device and synchronous pulse plasma etching equipment for the same. The method includes outputting a first radio frequency (RF) power and a control signal and outputting a second RF power. The first RF power is pulse-width modulated to have a first frequency and a first duty ratio, and is applied to a first electrode in a plasma etching chamber. The control signal includes information on a phase of the first RF power. The second RF power is pulse-width modulated to have the first frequency and a second duty ratio smaller than the first duty ratio, is applied to a corresponding second electrode among second electrodes in the plasma etching chamber, and is supplied for a time section in which the first RF power is supplied.Type: ApplicationFiled: October 28, 2010Publication date: June 16, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jeong-Yun LEE, Ken TOKASHIKI, Kyoung-Sub SHIN, Jun-Ho YOON, Hong CHO
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Patent number: 7951261Abstract: The present invention relates to a plasma etching apparatus. In the apparatus, potential difference is applied between a substrate support with a substrate seated thereon and a electrode surrounding an edge region of the substrate, and a distance between the substrate and the electrode is set to 3 mm or less so as to locally generate plasma in an area between the substrate and the electrode, thereby removing particles and a thin film in the edge region of the substrate.Type: GrantFiled: August 3, 2006Date of Patent: May 31, 2011Assignee: Jusung Engineering Co. Ltd.Inventor: Bu-Il Jeon
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Publication number: 20110114600Abstract: Provided is a coaxial waveguide distributor including a coaxial waveguide which extends non-perpendicularly at a branched portion. A plasma processing apparatus in which a gas is excited by microwaves to plasma process an object to be processed includes a processing container, a microwave source which outputs microwaves, a transmission line which transmits the microwaves output from the microwave source, a plurality of dielectric plates which are provided on an inner wall of the processing container and emit microwaves into the processing container, a plurality of first coaxial waveguides which are adjacent to the plurality of dielectric plates and transmit microwaves to the plurality of dielectric plates, and one stage or two or more stages of a coaxial waveguide distributor which distributes and transmits the microwaves transmitted through the transmission line to the plurality of first coaxial waveguides.Type: ApplicationFiled: June 3, 2009Publication date: May 19, 2011Applicants: TOKYO ELECTRON LIMITED, TOHOKU UNIVERSITYInventors: Masaki Hirayama, Tadahiro Ohmi
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Patent number: 7942112Abstract: A system and method for preventing formation of a plasma-inhibiting substance within a plasma chamber is provided. In one embodiment, an apparatus that includes a barrier component configured to be disposed within a plasma chamber. The barrier component includes a wall that defines a plasma formation region where a chemically-reducing species is formed from a fluid. A portion of the wall is formed of a substance that is substantially inert to the chemically-reducing species. The wall prevents the chemically-reducing species from interacting with an inner surface of the plasma chamber to form a conductive substance. The barrier component also includes an opening in fluid communication with the plasma formation region. The fluid is introduced into the plasma formation region via the opening.Type: GrantFiled: December 4, 2006Date of Patent: May 17, 2011Assignee: Advanced Energy Industries, Inc.Inventors: Fernando Gustavo Tomasel, Justin Mauck, Andrew Shabalin, Denis Shaw, Juan Jose Gonzalez
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Publication number: 20110100556Abstract: A plasma system with an injection device is provided. The plasma system comprises a plasma cavity and an injection device. The plasma cavity comprises a first electrode and a second for generating plasma. The injection device comprises a plasma injection tube and at least a reactant injection tube. The plasma injection tube is connected to the plasma cavity. The plasma injection tube comprises an inlet, an outlet and an outer sidewall. The plasma injection tube injects the plasma from the inlet and guides the plasma out through the outlet. The outer sidewall has a width decreasing from the inlet to the outlet. The reactant injection tube is disposed outside of the outer sidewall. The reactant injection tube injects a reactant to the outer sidewall so that the reactant flows along the outer sidewall toward the outlet and mixes with the plasma at the outlet.Type: ApplicationFiled: December 24, 2009Publication date: May 5, 2011Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chi-Hung Liu, Chen-Der Tsai, Wen-Tung Hsu, Chun-Hsien Su, Wen-Chin Cheng, Liang-Yi Chen
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Publication number: 20110100553Abstract: An arrangement for performing plasma confinement within a processing chamber during substrate processing is provided. The arrangement includes a first peripheral ring positioned next to a secondary peripheral ring. The first peripheral ring surrounds a confined chamber volume that sustains plasma for etching a substrate. The first peripheral ring includes a first plurality of slots for exhausting processed byproduct gas from the confined chamber volume. The second peripheral ring includes a second plurality of slots that is positioned next to the first plurality of slots such that the second plurality of slots does not overlap the first plurality of slots, thereby preventing a direct line-of-sight from within the confined chamber volume to an outside chamber volume (an area outside of the first peripheral ring). The arrangement also includes a manifold connecting the two rings to provide a route for exhausting the processed byproduct gas from the confined chamber volume.Type: ApplicationFiled: August 31, 2010Publication date: May 5, 2011Inventors: Rajinder Dhindsa, Akira Koshishi, Alexei Maraktanov
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Publication number: 20110104884Abstract: A hot edge ring with extended lifetime comprises an annular body having a sloped upper surface. The hot edge ring includes a step underlying an outer edge of a semiconductor substrate supported in a plasma processing chamber wherein plasma is used to process the substrate. The step includes a vertical surface which surrounds the outer edge of the substrate and the sloped upper surface extends upwardly and outwardly from the upper periphery of the vertical surface.Type: ApplicationFiled: November 2, 2010Publication date: May 5, 2011Applicant: Lam Research CorporationInventors: Akira Koshiishi, Sathya Mani, Gautam Bhattacharyya, Gregory R. Bettencourt, Sandy Chao
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Patent number: 7927455Abstract: A plasma processing apparatus including a sealable chamber that is sealable, a gas supply section that supplies a reactive material gas into the chamber, and a plurality of cathode and anode electrode pairs provided within the chamber, connected to an external power supply, and producing plasma discharges through the material gas, respectively, wherein the plurality of cathode and anode electrode pairs are provided at a distance from one another at which the plasma discharges are prevented from interfering with one another.Type: GrantFiled: October 19, 2005Date of Patent: April 19, 2011Assignee: Sharp Kabushiki KaishaInventors: Katsushi Kishimoto, Yuhsuke Hukuoka
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Patent number: 7922880Abstract: Local plasma density, e.g., the plasma density in the vicinity of the substrate, is increased by providing an ion extractor configured to transfer ions and electrons from a first region of magnetically confined plasma (typically a region of higher density plasma) to a second region of plasma (typically a region of lower density plasma). The second region of plasma is preferably also magnetically shaped or confined and resides between the first region of plasma and the substrate. A positively biased conductive member positioned proximate the second region of plasma serves as an ion extractor. A positive bias of about 50-300 V is applied to the ion extractor causing electrons and subsequently ions to be transferred from the first region of plasma to the vicinity of the substrate, thereby forming higher density plasma. Provided methods and apparatus are used for deposition and resputtering.Type: GrantFiled: May 24, 2007Date of Patent: April 12, 2011Assignee: Novellus Systems, Inc.Inventors: Anshu A. Pradhan, Douglas B. Hayden, Ronald L. Kinder, Alexander Dulkin
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Patent number: 7922866Abstract: Positional relationships are established in a process chamber. A base is configured with a lower electrode surface to support a wafer, and an upper electrode has a lower surface. A drive mounted on the base has a linkage connected to the upper electrode. A fixture placed on the lower surface moves into a desired orientation of the lower electrode. With the upper electrode loosely connected by the linkage to the drive, the fixture transfers the desired orientation to the upper electrode. The linkage is tightened to maintain the desired orientation, the fixture is removed and a process exclusion insert is mounted to the upper electrode. The drive moves the upper electrode and the insert to define an inactive process zone between the upper electrode and the wafer on the lower electrode to protect a central area of the wafer during etching of a wafer edge environ around the central area.Type: GrantFiled: December 24, 2009Date of Patent: April 12, 2011Assignee: Lam Research CorporationInventors: Gregory S. Sexton, Andrew D. Bailey, III, Alan M. Schoepp, John D. Boniface
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Publication number: 20110073257Abstract: An arrangement for performing pressure control in a plasma processing chamber comprising an upper electrode, a lower electrode, a unitized confinement ring arrangement wherein the upper electrode, the lower electrode and the unitized confinement ring arrangement are configured at least for surrounding a confined chamber region to facilitate plasma generation and confinement therein. The arrangement further includes at least one plunger configured for moving the unitized confinement ring arrangement in a vertical direction to adjust at least one of a first gas conductance path and a second gas conductance path to perform the pressure control, wherein the first gas conductance path is formed between the upper electrode and the unitized confinement ring arrangement and the second gas conductance path is formed between the lower electrode and the single unitized ring arrangement.Type: ApplicationFiled: September 27, 2010Publication date: March 31, 2011Inventors: Rajinder Dhindsa, Rajaramanan Kalyanaraman, Sathyanarayanan Mani, Gautam Bhattacharyya
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Publication number: 20110070743Abstract: 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: ApplicationFiled: November 22, 2010Publication date: March 24, 2011Inventors: Rajinder Dhindsa, Alexei Marakhtanov
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Patent number: 7909961Abstract: A method and apparatus for etching photomasks are provided herein. The apparatus includes a process chamber with a shield above a substrate support. The shield comprises a plate with apertures, and the plate has two zones with at least one characteristic, such as material or potential bias, that is different from each other. The method provides for etching a photomask substrate with a distribution of ions and neutral species that pass through the shield.Type: GrantFiled: October 30, 2006Date of Patent: March 22, 2011Assignee: Applied Materials, Inc.Inventors: Ajay Kumar, Madhavi R. Chandrachood, Richard Lewington, Darin Bivens, Amitabh Sabharwal, Sheeba J. Panayil, Alan Hiroshi Ouye
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Publication number: 20110056513Abstract: The invention relates to a method for treating, particularly cleaning, modifying, and/or activating surfaces, using UV/VUV irradiation of a UV/VUV lamp and additional gas discharge. A dielectric barrier discharge lamp (1) is preferably used as the UV/VUV lamp, comprising a planar window segment (7) for emitting the UV/VUV radiation. The lamp (1) extends into a process chamber (17). The additional gas discharge is generated in the region of the outer side of the window segment (7) of the lamp (1). The substrate to be treated is disposed within the process chamber (17), near the window segment (7).Type: ApplicationFiled: June 5, 2008Publication date: March 10, 2011Inventors: Axel Hombach, Siegmar Rudakowski
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Publication number: 20110058147Abstract: A cleaning module for an EUV lithography device with a supply (206) for molecular hydrogen, a heating filament (210) and a line (212) for atomic and/or molecular hydrogen. The line (212) has at least one bend with a bending angle of less than 120 degrees, and has a material on its inner surface which has a low recombination rate for atomic hydrogen. The supply (206) is of flared shape at its end, which faces the heating filament (210). A gentler cleaning of optical elements is achieved with such a cleaning module, or also by exciting a cleaning gas with a cold cathode or a plasma, or by filtering out charged particles via of electrical and/or magnetic fields.Type: ApplicationFiled: September 29, 2010Publication date: March 10, 2011Applicant: Carl Zeiss SMT AGInventors: Dirk Heinrich Ehm, Julian Kaller, Stefan Schmidt, Dieter Kraus, Stefan Wiesner, Almut Czap, Hin-Yiu Anthony Chung, Stefan Koehler
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Patent number: 7900580Abstract: A substrate processing apparatus comprises a reaction chamber which is to accommodate stacked substrates, a gas introducing portion, and a buffer chamber, wherein the gas introducing portion is provided along a stacking direction of the substrates, and introduces substrate processing gas into the buffer chamber, the buffer chamber includes a plurality of gas-supply openings provided along the stacking direction of the substrates, and the processing gas introduced from the gas introducing portion is supplied from the gas-supply openings to the reaction chamber.Type: GrantFiled: October 31, 2007Date of Patent: March 8, 2011Assignee: Hitachi Kokusai Electric Inc.Inventors: Tadashi Kontani, Kazuyuki Toyoda, Taketoshi Sato, Toru Kagaya, Nobuhito Shima, Nobuo Ishimaru, Masanori Sakai, Kazuyuki Okuda, Yasushi Yagi, Seiji Watanabe, Yasuo Kunii
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Patent number: 7901510Abstract: A bolt which is driven into a female screw portion disposed in a brittle member in a wear environment includes a head formed of a wear resistant material, a body which is formed of a resin having elasticity or plasticity and has a first male screw portion, and a placed member disposed between the head and the body and formed of a wear resistant resin having elasticity or plasticity. The body further includes a second male screw portion disposed along a central axis of the body and the head includes a female screw portion which the second male screw portion is driven into. The placed member is of a plate shape and has a through hole in its central portion, and a diameter of the through hole is smaller than or equal to a nominal diameter of the first male screw portion and larger than or equal to a nominal diameter of the second male screw portion.Type: GrantFiled: March 11, 2010Date of Patent: March 8, 2011Assignee: Tokyo Electron LimitedInventor: Makoto Horimizu
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Patent number: 7901540Abstract: The present invention generally relates to a method and apparatus to produce and apply a variety of surface cleaning and modification spray treatments. More specifically, the present invention provides the simultaneous steps of selectively removing one or more unwanted surface contaminants, including extremely hard coatings, exposing a native clean surface layer and modifying said exposed and cleaned native substrate surface layer to energetic radicals and radiation to improve adhesion, wettability or coatability. Reactive species in combination with non-reactive, but chemically or physically active, species provide a reaction control and surface treatment environment by which contaminants and surface interlayers are oxidatively, physically and/or chemically removed or modified to prepare an underlying substrate surface for subsequent bonding, deposition, coating and curing operations. Substrates treated in accordance with the present invention have cleaner and higher surface free energy surfaces.Type: GrantFiled: August 18, 2006Date of Patent: March 8, 2011Inventor: David P. Jackson