Flux Passes Through Target Surface Patents (Class 204/298.17)
  • Patent number: 10748571
    Abstract: A device includes a housing unit and a number of magnets. The housing unit includes a number of holes therein. The magnets are positioned in the holes. The magnets have a same pole orientation. It is appreciated that the magnets are positioned in the holes to form a mechanically balanced and magnetically unbalanced structure.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: August 18, 2020
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Samuel Lewis Tanaka, ChunWai Joseph Tong, Xiaoding Ma, Jerry Kueirweei Chour, Thomas Larson Greenberg
  • Patent number: 10573500
    Abstract: An apparatus includes a target, wherein the target includes a nonuniform erosion profile. The apparatus also includes a number of interchangeable magnetic and non-magnetic inserts. The interchangeable magnetic and non-magnetic inserts are configured to control a pass through flux based on the nonuniform erosion profile.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: February 25, 2020
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Toon Hai Foo, Thomas P. Nolan
  • Patent number: 10504705
    Abstract: Magnetrons for plasma sputter chambers, plasma sputter chambers including magnetrons and methods of processing a substrate such as an EUV mask blank in a plasma sputter chamber are disclosed. The magnetron comprises a plurality of elongate magnets arranged in a pattern where there is an unbalance ratio greater than 1 and less than 3.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: December 10, 2019
    Assignee: Applied Materials, Inc.
    Inventors: Sirisha Behara, Sanjay Bhat, Vibhu Jindal
  • Patent number: 9011655
    Abstract: A device for generating a cold plasma in a vacuum enclosure includes a cathode body having hollow chambers for confining the plasma. Magnets are placed around each hollow chamber for creating a magnetic field forcing electrons to rotate about the field lines. The cathode body cooperates with an element for circulating a coolant to extract the heat generated by an intense ion bombardment at each of the hollow chambers.
    Type: Grant
    Filed: February 1, 2008
    Date of Patent: April 21, 2015
    Assignee: H.E.F.
    Inventors: Philippe Maurin-Perrier, Hervé Chavanne, Laure Poigt
  • Patent number: 9005413
    Abstract: A film formation apparatus includes: a chamber having an inner space in which both a body to be processed and a target are disposed so that the body to be processed and the target are opposed to each other, a first magnetic field generation section generating a magnetic field in the inner space to which the target is exposed; a second magnetic field generation section generating a perpendicular magnetic field so as to allow perpendicular magnetic lines of force thereof to pass between the target the body to be processed; and a third magnetic field generation section disposed at upstream side of the target as seen from the second magnetic field generation section.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: April 14, 2015
    Assignee: ULVAC, Inc.
    Inventors: Shuji Kodaira, Tomoyuki Yoshihama, Koukichi Kamada, Kazumasa Horita, Junichi Hamaguchi, Shigeo Nakanishi, Satoru Toyoda
  • Patent number: 9005414
    Abstract: The disclosure relates to a magnet arrangement for a sputtering system, wherein the magnet arrangement is adapted for a rotatable target of a sputtering system and includes: a first magnet element extending along a first axis; a second magnet element being disposed around the first magnet element symmetrically to a first plane; wherein the second magnet element includes at least one magnet section intersecting the first plane; and wherein a magnetic axis of the at least one magnet section is inclined with respect to a second plane being orthogonal to the first axis. Further, the disclosure relates to a target backing tube for a rotatable target of a sputtering system, a cylindrical rotatable target for a sputtering system, and a sputtering system.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: April 14, 2015
    Assignee: Applied Materials, Inc.
    Inventors: Andreas Lopp, Juergen Grillmayer, Wolfgang Krock
  • Patent number: 8968538
    Abstract: A magnetic film having excellent uniformity in in-plane distribution of film thickness or sheet resistance is formed when the film is formed by forming a magnetic field on a processing surface of a substrate (21) and performing oblique incidence sputtering by using high discharge power. A sputtering apparatus (1) is provided with a substrate holder (22) for holding rotatably the substrate (21) in the surface direction of the processing surface of the substrate; a substrate magnetic field forming device (30) which is disposed to surround the substrate (21) and forms a magnetic field on the processing surface of the substrate (21); cathodes (41) which are arranged diagonally above the substrate (21) and are supplied with electric discharge power; a position detecting device (23) for detecting a rotation position of the substrate (21); and a control device (50) which adjusts the rotation speed of the substrate (21) in accordance with the rotation position detected by the position detecting device (23).
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: March 3, 2015
    Assignee: Canon Anelva Corporation
    Inventors: Toru Kitada, Naoki Watanabe, Motonobu Nagai, Masahiro Suenaga, Takeo Konno
  • Patent number: 8961756
    Abstract: A magnetron assembly including one or more magnetrons each forming a closed plasma loop on the sputtering face of the target. The target may include multiple strip targets on which respective strip magnetrons roll and are partially supported on a common support plate through a spring mechanism. The strip magnetron may be a two-level folded magnetron in which each magnetron forms a folded plasma loop extending between lateral sides of the strip target and its ends meet in the middle of the target. The magnets forming the magnetron may be arranged in a pattern having generally uniform straight portions joined by curved portion in which extra magnet positions are available near the corners to steer the plasma track. Multiple magnetrons, possibly flexible, may be resiliently supported on a scanned support plate and individually partially supported by rollers on the back of one or more targets.
    Type: Grant
    Filed: July 20, 2007
    Date of Patent: February 24, 2015
    Assignee: Applied Materials, Inc.
    Inventors: Makoto Inagawa, Hien Minh Huu Le, Akihiro Hosokawa, Bradley O. Stimson, John M. White
  • Patent number: 8911602
    Abstract: A plasma source includes a hexagonal hollow cathode, the cathode including six targets and six magnets to generate and maintain a high density plasma; and an anode located beneath the cathode. A second hexagonal hollow cathode can be positioned concentric to the hexagonal hollow cahode.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: December 16, 2014
    Inventor: Makoto Nagashima
  • Patent number: 8882976
    Abstract: A magnetron unit moving apparatus for preventing magnetization and magnetron sputtering equipment having the same. The magnetron unit moving apparatus includes a magnetron unit disposed adjacent to a target, to generate a specific magnetic field, and a movement unit to space the magnetron unit and the target apart such that a strength of a magnetic field generated over the target is within a predetermined reference strength range. It is possible to space the target and the magnetron unit apart so as to prevent the target from being magnetized when a process is not performed.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: November 11, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yun-Mo Chung, Min-Jae Jeong, Jong-Won Hong, Eu-Gene Kang, Heung-Yeol Na, Ki-Yong Lee
  • Publication number: 20140246314
    Abstract: Methods and apparatus for a magnetron assembly are provided herein. In some embodiments, a magnetron assembly includes a first base plate; a second base plate movable with respect to the first base plate between a first position and a second position; an outer magnetic pole in the shape of a loop and comprising an outer magnetic pole section coupled to the first base plate and an outer magnetic pole section coupled to the second base plate; and an inner magnetic pole disposed within the outer magnetic pole, wherein the outer and inner magnetic poles define a closed loop magnetic field, and wherein the closed loop magnetic field is maintained when the second base plate is disposed in both the first position and a second position.
    Type: Application
    Filed: February 18, 2014
    Publication date: September 4, 2014
    Applicant: APPLIED MATERIALS, INC.
    Inventors: ALAN RITCHIE, RYAN HANSON, XIANWEI ZHAO
  • Patent number: 8778151
    Abstract: A plasma apparatus includes: a chamber which can be evacuated into vacuum; first electrode disposed within the chamber; a magnet mechanism having a magnet provided apart from and above the first electrode; a second electrode provided facing the first electrode; and a magnetic shield member provided in at least one of gaps between the first electrode and the magnet mechanism and between the first electrode and the second electrode.
    Type: Grant
    Filed: June 14, 2010
    Date of Patent: July 15, 2014
    Assignee: Canon Anelva Corporation
    Inventors: Masayoshi Ikeda, Yo Tanaka, Tsutomu Hiroishi
  • Patent number: 8778144
    Abstract: Method for manufacturing magnetron coated substrates, in which along the target and on its backside pointing from the substrate, a magnet arrangement is present by which along the sputter surface of the target at least one closed loop of a tunnel shaped magnetron magnetic field is generated, characterized in that for setting the sputter rate distribution the distance of a part of the magnet arrangement to the backside of the target is changed.
    Type: Grant
    Filed: September 28, 2004
    Date of Patent: July 15, 2014
    Assignee: Oerlikon Advanced Technologies AG
    Inventor: Jurgen Weichart
  • Patent number: 8709218
    Abstract: A vacuum processing apparatus includes an evacuatable vacuum chamber, a substrate holder which is provided in the vacuum chamber, has a substrate chuck surface vertically facing down, and includes an electrostatic chuck mechanism which electrostatically chucks a substrate, a substrate support member which is provided in the vacuum chamber to keep the substrate parallel to the substrate chuck surface and support the substrate in an orientation that allows the substrate chuck surface to chuck the substrate, and a moving mechanism which moves at least one of the substrate holder and the substrate supported by the substrate support member so as to bring the substrate and the substrate holder into contact with each other, thereby causing the substrate holder to chuck the substrate.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: April 29, 2014
    Assignee: Canon Anelva Corporation
    Inventors: Hajime Yamamoto, Hiroyuki Imai
  • Patent number: 8617363
    Abstract: A magnetron sputtering apparatus where a target is disposed to face a substrate installed in a vacuum chamber and magnets are disposed on a rear surface of the target, including a power supply unit configured to apply a voltage to the target; and a magnet array body including a magnet group arranged on a base body provided at the rear surface of the target. In the magnet array body, rod-shaped magnets each having different polarities at opposite ends thereof are disposed in a mesh shape on a surface of the base body facing the target; the mesh has a 2n polygonal shape (n being an integer greater than or equal to 2); permeable core members are disposed at intersection points of the mesh surrounded by the ends of the rod-shaped magnets; and end portions of the rod-shaped magnets which surround each of the core members have a same polarity.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: December 31, 2013
    Assignee: Tokyo Electron Limited
    Inventors: Shigeru Mizuno, Hiroyuki Toshima
  • Patent number: 8597479
    Abstract: A magnetron sputtering system generates a high density plasma on a target by applying magnetic fields intersecting an electric field by using a plurality of magnets that are rotatably supported. The respective magnets are revolved and rotated so that the time variation of regions where a magnetic field (line of magnetic force) generated by the each magnet is orthogonal to an electric field is prevented from becoming monotonous. Further, the respective magnets are arranged to make the distances between the center of rotation and the center of revolution of the respective magnets different from each other, so that the regions where the magnetic field (line of magnetic force) generated by the each magnet is orthogonal to the electric field are dispersed in the radial direction of a target.
    Type: Grant
    Filed: February 8, 2005
    Date of Patent: December 3, 2013
    Assignee: Tohoku Seiki Industries, Ltd.
    Inventors: Keitaro Harada, Masayoshi Yokoo, Norikazu Kainuma, Yoshinobu Takano, Isao Tanikawa
  • Patent number: 8585873
    Abstract: A method of sputtering with sputtering apparatus is for depositing a layer upon a substrate. The apparatus includes a sputter target with a face exposed to the substrate and a magnetron providing a magnetic field that moves relative to the target face. The speed of movement of the field is controlled such that the uniformity of the deposition on the substrate is enhanced. A particular method includes monitoring uniformity verses speed, selecting the speed that gives the preferred uniformity and controlling the field to the selected speed. The selected speed may vary over the life of the target, with increased speeds becoming desirable as the target thins.
    Type: Grant
    Filed: October 12, 2005
    Date of Patent: November 19, 2013
    Assignee: Aviza Technology Limited
    Inventors: Mark Ashley Ford, Rajkumar Jakkaraju
  • Publication number: 20130299349
    Abstract: A racetrack-shaped magnetic-field-generating apparatus for magnetron sputtering comprising a linear portion and corner portions, the linear portion comprising a magnetic base, a center permanent magnet disposed on its surface, and side permanent magnets disposed on both sides thereof with a gap; the center and side permanent magnets being vertically magnetized with opposite polarities; the corner portions comprising a non-magnetic base, a center magnetic pole member disposed on its surface, a semicircular or semi-polygonal, peripheral magnetic pole member, and plural permanent magnets arranged between both magnetic pole members with their magnetization directions in parallel to a target surface; and the magnetic poles of plural permanent magnets opposing the center magnetic pole member having the same polarity as those of the center permanent magnet opposing the target.
    Type: Application
    Filed: January 12, 2011
    Publication date: November 14, 2013
    Applicant: HITACHI METALS, LTD.
    Inventors: Yoshihiko Kuriyama, Masahiro Mita
  • Patent number: 8568577
    Abstract: Provided is a magnetron sputtering apparatus that increases an instantaneous plasma density on a target to improve a film forming rate. The magnetron sputtering apparatus includes a substrate to be processed, a target installed to face the substrate and a rotary magnet installed at a side opposite to the substrate across the target. In the magnetron sputtering apparatus, plasma loops are formed on a target surface. The plasma loops are generated, move and disappear in an axis direction of the rotary magnet according to a rotation of the rotary magnet.
    Type: Grant
    Filed: April 4, 2008
    Date of Patent: October 29, 2013
    Assignees: National University Corporation Tohoku University, Tokyo Electron Limited
    Inventors: Tadahiro Ohmi, Tetsuya Goto, Takaaki Matsuoka
  • Patent number: 8562798
    Abstract: A physical vapor deposition reactor includes a metal sputter target, a D.C. sputter power source coupled to the metal sputter target and a wafer support pedestal facing the metal sputter target. A movable magnet array is adjacent a side of the metal sputter target opposite the wafer support pedestal. A solid metal RF feed rod engages the metal sputter target and extends from a surface of the target on a side opposite the wafer support pedestal. A VHF impedance match circuit is coupled to an end of the RF feed rod opposite the metal sputter target and a VHF RF power generator coupled to said VHF impedance match circuit. Preferably, the reactor of further includes a center axle about which the movable magnet array is rotatable, the center axle having an axially extending hollow passageway, the RF feed rod extending through the passageway.
    Type: Grant
    Filed: September 7, 2005
    Date of Patent: October 22, 2013
    Assignee: Applied Materials, Inc.
    Inventors: Karl M. Brown, John Pipitone, Vineet Mehta
  • Publication number: 20130199924
    Abstract: A sputtering head comprises a receiving area for a sputtering target (target receptacle). The sputtering head comprises one or more magnetic field sources so as to generate a stray magnetic field. The magnetic north and the magnetic south of at least one magnetic field source, between which the stray field forms, are located 10 mm or less, preferably 5 mm or less, and particularly preferably approximately 1 mm apart. It was found that, notably when sputtering at a high sputtering gas pressure of 0.5 mbar or more, the degree of ionization of the sputtering plasma, and consequently also the ablation rate of the sputtering target, can be locally adjusted by such a locally effective magnetic field. This allows the thicknesses of the layers that are obtained to be more homogeneous over the surface of the substrate.
    Type: Application
    Filed: September 17, 2011
    Publication date: August 8, 2013
    Applicant: FORSCHUNGSZENTRUM JÜLICH GMBH
    Inventors: Mikhail Faley, Ulrich Poppe
  • Patent number: 8500975
    Abstract: A rectangular magnetron placed at the back of a rectangular sputtering target for coating a rectangular panel and having magnets of opposed polarities arranged to form a gap therebetween corresponding to a plasma track adjacent the target which extends in a closed serpentine or spiral loop. The spiral may have a large number of wraps and the closed loop may be folded before wrapping. The magnetron has a size only somewhat less than that of the target and is scanned in the two perpendicular directions of the target with a scan length of, for example, about 100 mm for a 2 m target corresponding to at least the separation of the gap between parallel portions of the loop. A central ferromagnetic shim beneath some magnets in the loop may compensate for vertical droop. The magnetron may be scanned in two alternating double-Z patterns rotated 90° between them.
    Type: Grant
    Filed: July 11, 2006
    Date of Patent: August 6, 2013
    Assignee: Applied Materials, Inc.
    Inventors: Hien Minh Huu Le, Akihiro Hosokawa, Avi Tepman
  • Patent number: 8496792
    Abstract: In a rotary magnet sputtering apparatus, a target consumption displacement quantity is measured, and corresponding to the measurement results, a distance between a rotating magnet group and a target is adjusted, and uniform film forming rate is achieved over a long period of time so as to reduce the change of a target surface due to consumption of the target and to reduce the change of the film forming rate with time. An ultrasonic sensor or a laser transmitting/receiving device may be used as a means for measuring the consumption displacement quantity of the target.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: July 30, 2013
    Assignees: National University Corporation Tohoku University, Tokyo Electron Limited
    Inventors: Tadahiro Ohmi, Tetsuya Goto, Takaaki Matsuoka
  • Publication number: 20130186743
    Abstract: A target is provided opposite to a wafer mounted on in a vacuum chamber, and a magnet array body is disposed above the target. In the magnet array body, ring-shaped magnet arrays are arranged to generate annular magnetic fields in the circumferential direction of the wafer, and a sputtering film formation is performed by switching between the magnetic fields.
    Type: Application
    Filed: January 18, 2013
    Publication date: July 25, 2013
    Applicant: TOKYO ELECTRON LIMITED
    Inventor: TOKYO ELECTRON LIMITED
  • Publication number: 20130180851
    Abstract: A magnetic field generator arranged behind a target and for generating a magnetic field on a front surface of the target based on magnetic force lines can include a ring-shaped outer magnetic body having a pole axis in a parallel direction (X-direction) with respect to the target surface, a center magnetic body arranged on an inner side of the outer magnetic body and having a pole axis in a parallel direction (X-direction) with the direction of the pole axis of the outer magnetic body, a yoke plate for supporting the outer magnetic body and the center magnetic body from behind, and a magnetic permeable plate for changing a magnetic field distribution of the front surface of the target. The magnetic permeable plate is arranged so as to be supported by the yoke plate from behind.
    Type: Application
    Filed: August 30, 2011
    Publication date: July 18, 2013
    Applicants: UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA, SHINCRON CO., LTD.
    Inventors: Wei Kong, Zijing Lin, Ming Li, Bin Xie, Haiqian Wang, Yousong Jiang, Ekishu Nagae
  • Patent number: 8480865
    Abstract: The present invention relates to a magnetron sputtering device including a large ring cathode having a defined inner radius. The position of the ring cathode is offset in relation to a center point of a planetary drive system. An anode or reactive gas source may be located within the inner radius of the ring cathode. Lower defect rates are obtained through the lower power density at the cathode which suppresses arcing, while runoff is minimized by the cathode to planet geometry without the use of a mask.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: July 9, 2013
    Assignee: JDS Uniphase Corporation
    Inventor: Georg J. Ockenfuss
  • Publication number: 20130146453
    Abstract: A sputtering apparatus includes a template having cells. Removable inserts are disposed within the cells. The cells may be circular, triangular, square, diamond shaped, or hex shaped. The removable inserts may be magnetic or non-magnetic inserts. A cover is connected with a first side of the template. A yoke is connected with a second side of the template. The removable inserts are operable to customize or shape a magnetic field over a target. The yoke is operable to provide a return path for the magnetic field.
    Type: Application
    Filed: December 9, 2011
    Publication date: June 13, 2013
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventor: Toon Hai Foo
  • Patent number: 8388819
    Abstract: A magnet target comprising a fixing plate, a plurality of shafts arranged in an array, a plurality of connecting rods pivotably provided onto a plate surface of the fixing plate at one end and capable of rotating about corresponding one of the shafts, and a plurality of magnets that are each attached to the other fee end of one connecting rod. The magnets comprise magnets having external S poles and magnets having external N poles, and the magnets having external S poles and magnets having external N poles are arranged alternatively in an array.
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: March 5, 2013
    Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.
    Inventors: Xin Zhao, Wenyu Zhang
  • Patent number: 8382967
    Abstract: A magnetron sputtering device includes a base arranged adjacent to a sputtering target, and a plurality of movable magnet assemblies. Each movable magnet assembly includes a support fixed to the base, and a plurality of magnets that are connected to each other, arranged on the support and comprising opposing poles facing the base. Each movable magnet assembly also includes a driving device to drive the plurality of magnets to slide with respect to the support.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: February 26, 2013
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shao-Kai Pei
  • Publication number: 20130037406
    Abstract: A sputtering device for depositing a deposition material from a deposition source to a deposition target, wherein a sputtering pressure between the deposition source and the deposition target is from about 6.70×10?2 Pa to about 1.34×10?1 Pa.
    Type: Application
    Filed: April 4, 2012
    Publication date: February 14, 2013
    Inventor: Myung-Soo Huh
  • Patent number: 8361283
    Abstract: The arrangement and method for sputtering material onto a workpiece and cleaning a target of the sputtering chamber includes exposing a target to an electromagnetic field of a strength sufficient to remove particles from the target. The electromagnetic field is generated by an electromagnetic device that is positioned in proximity to the target and generates a strength greater than a strength of a cathode magnetic field behind the target to safely remove the contaminating particulates from the target, which may be made of a strong magnetic material.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: January 29, 2013
    Assignee: Seagate Technology LLC
    Inventor: Jeffrey S. Reiter
  • Patent number: 8273221
    Abstract: An apparatus and method are provided for improved utilization of a sputter target in the longitudinal end regions. The focus of erosion in the end regions is widened, thereby extending the useful life of the target. This provides improved efficiency and reduces waste because a greater proportion of the target material in the more expansive central region can be harvested, because the target is utilized for a longer period of time.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: September 25, 2012
    Assignee: Oerlikon Solar AG, Trubbach
    Inventors: Stefan Schneider, Marcel Muller, Jiri Vyskocil, Israel Wagner
  • Patent number: 8236152
    Abstract: A deposition system includes a chamber, a plurality of targets in a center region in the chamber and a plurality of substrates in the chamber. The targets are sequentially positioned when viewed in a first direction. At least one of the targets includes a sputtering surface facing outward. The substrates are sequentially positioned when viewed in the first direction. At least one of the substrates includes a deposition surface configured to receive material sputtered off the sputtering surface.
    Type: Grant
    Filed: November 24, 2006
    Date of Patent: August 7, 2012
    Assignee: Ascentool International Ltd.
    Inventors: George X. Guo, Kai-an Wang
  • Patent number: 8231767
    Abstract: A magnetic field generating apparatus which generates a cusped magnetic field on an electrode includes a magnet mechanism which is attached to the electrode and includes a plurality of magnets held on a holding plate, and a rotation mechanism which rotates the holding plate. The plurality of magnets (61) are regularly arrayed to be point-symmetrical about a specific point. The specific point is at a position shifted from the center of rotation of the holding plate by the rotation mechanism.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: July 31, 2012
    Assignee: Canon Anelva Corporation
    Inventors: Kazuyuki Iori, Masayoshi Ikeda, Yasumi Sago
  • Publication number: 20120160672
    Abstract: A sputtering apparatus includes a target electrode capable of mounting a target, a first support member which supports the target electrode, a magnet unit which forms a magnetic field on a surface of the target, a second support member which supports the magnet unit, and a force generation portion which is provided between the first support member and the second support member, and generates a second force in a direction opposite to a first force that acts on the second support member by an action of the magnetic field formed between the target and the magnet unit, wherein the second force has a magnitude which increases as the magnet unit comes closer to the target electrode.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 28, 2012
    Applicant: CANON ANELVA CORPORATION
    Inventor: Tetsuya Endo
  • Publication number: 20120111724
    Abstract: The present invention provides a magnetic circuit for a magnetron sputtering apparatus, which produces arc-shaped magnetic field lines of high magnetic field strength over a target surface, and has an improved demagnetization resistance. The magnetic circuit includes: an inner magnet; an outer magnet having a magnetization direction opposite to that of the inner magnet, and surrounding the inner magnet; a horizontally magnetized magnet disposed between the inner and outer magnets, and magnetized in a direction perpendicular to those of the inner and outer magnets, and in a direction from the inner magnet to the outer magnet, or from the outer magnet to the inner magnet; and a yoke configured so that a magnetic flux passes through the yoke between the inner and outer magnets, in which a magnetic coercive force of the horizontally magnetized magnet is greater in a region closer to the target side than in a center of the magnet interior.
    Type: Application
    Filed: October 31, 2011
    Publication date: May 10, 2012
    Inventor: Hideki Kobayashi
  • Publication number: 20120073965
    Abstract: A magnetron sputtering device includes a main body and a magnet mounting system for receiving magnets. The magnet mounting system comprises a first annular member, a second annular member coaxially encasing the first member, a third annular member coaxially encasing the second member, a first driving device connected to the first annular member, a second driving device connected to the second annular member, and a third driving device connected to the third annular member. The first driving device, the second driving device, and the third driving device are respectively configured for driving the first annular member, the second annular member, and the third annular member to move along an axis of the first annular member.
    Type: Application
    Filed: December 13, 2010
    Publication date: March 29, 2012
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-KAI PEI
  • Patent number: 8057649
    Abstract: Disclosed is an invention that uses a coaxial microwave antenna as a primary plasma source in PVD. The coaxial microwave antenna is positioned inside a sputtering target. Instead of using a cathode assist in sputtering, microwaves generated from the coaxial microwave antenna may leak through the sputtering target that comprises a dielectric material to form microwave plasma outside the sputtering target. To further enhance plasma density, a magnetron or a plurality of magnetrons may be added inside the target to help confine secondary electrons. An electric potential may be formed between adjacent magnetrons and may further enhance ionization. To achieve directional control of the generated microwaves, a shield that comprises a dielectric material or dielectric material coated metal may be added proximate the coaxial microwave antenna. Furthermore, for high utilization of expensive target materials, a target can rotate to improve the utilization efficiency.
    Type: Grant
    Filed: May 6, 2008
    Date of Patent: November 15, 2011
    Assignee: Applied Materials, Inc.
    Inventors: Michael W. Stowell, Nety Krishna
  • Publication number: 20110226617
    Abstract: A sputter deposition system comprises a vacuum chamber including a vacuum pump for maintaining a vacuum in the vacuum chamber, a gas inlet for supplying process gases to the vacuum chamber, a sputter target and a substrate holder within the vacuum chamber, and a plasma source attached to the vacuum chamber and positioned remotely from the sputter target, the plasma source being configured to form a high density plasma beam extending into the vacuum chamber. The plasma source may include a rectangular cross-section source chamber, an electromagnet, and a radio frequency coil, wherein the rectangular cross-section source chamber and the radio frequency coil are configured to give the high density plasma beam an elongated ovate cross-section. Furthermore, the surface of the sputter target may be configured in a non-planar form to provide uniform plasma energy deposition into the target and/or uniform sputter deposition at the surface of a substrate on the substrate holder.
    Type: Application
    Filed: March 22, 2011
    Publication date: September 22, 2011
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Ralf Hofmann, Majeed A. Foad
  • Publication number: 20110220491
    Abstract: Previous limitations in utilizing energetic vapor deposition means are addressed through the introduction of a novel means of vapor deposition, namely, an Electron-Assisted Deposition (EAD) process and apparatus. The EAD mode of film growth disclosed herein is generally achieved by, first, forming a magnetic field that possesses field lines that intersect electrically non-grounded first and second surfaces, wherein at least one surface is a workpiece, thereby forming a magnetic trap between first and second surfaces; second, introducing a high flux of electrons axially into the magnetic field existing between the first and second surfaces, so that the electrons form an electron-saturated space-charge in the space adjacent to the substrate, wherein plasma interactions with the substrate are substantially avoided, and modification of film growth processes is provided predominantly by electron—rather than plasma—bombardment.
    Type: Application
    Filed: April 23, 2011
    Publication date: September 15, 2011
    Inventor: Donald Bennett Hilliard
  • Publication number: 20110220494
    Abstract: Disclosed is magnetron based metallization processing apparatuses. The apparatus comprises a magnetron which comprises at least one pole piece that is not a permanent magnet at least before the at least one pole piece is assembled in the magnetron assembly. The balance or unbalance ratio of magnetic strength between inner and outer pole pieces may be adjusted by a gap between inner or outer pole pieces and mounting plate. The apparatus may comprise a second magnet assembly that is used to modify the electromagnetic field created by the magnetron assembly for fabricating a semiconductor device. The second magnet assembly comprises electromagnet(s), permanent magnet(s), or ferrous materials. The apparatus may further comprise either DC, pulsed, or RF power supply for charging a sputtering target. The apparatus may comprise a plenum that is used to control the thermal behavior of the sputtering target and is separated from the magnetron assembly.
    Type: Application
    Filed: March 11, 2010
    Publication date: September 15, 2011
    Inventor: PEIJUN DING
  • Patent number: 7955480
    Abstract: The present invention provides a sputtering apparatus and a film deposition method capable of forming a magnetic film with reduced variations in the direction of magnetic anisotropy. The sputtering apparatus of the present invention is provided with a rotatable cathode (802), a rotatable stage (801) and a rotatable shielding plate (805). The sputtering apparatus controls the rotation of at least one of the cathode (802), stage (801) and shielding plate (805) so that sputtered particles impinging at an angle formed with respect to a normal line of the substrate (804) of 0° or more and 50° or less out of sputtered particles generated from the target (803a) during sputtering are made to impinge on the substrate (804).
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: June 7, 2011
    Assignee: Canon Anelva Corporation
    Inventors: Tetsuya Endo, Einstein Noel Abarra
  • Publication number: 20110127157
    Abstract: A magnetron sputtering apparatus (100) comprising: a magnetic array arranged to create a magnetic field (103) in the vicinity of a tubular target (2) which target at least partially surrounds the magnetic array and acts as a cathode (2a); an anode (2b); the magnetic array being arranged to create an asymmetric plasma distribution with respect to the normal angle of incidence to a substrate (3); and means (1b) for enhancing the magnetic field to produce a relatively low impedance path for electrons flowing from the cathode (2a) to the anode (2b).
    Type: Application
    Filed: August 14, 2008
    Publication date: June 2, 2011
    Applicant: GENCOA LTD.
    Inventor: Victor Bellido-Gonzalez
  • Publication number: 20110089026
    Abstract: A touch panel manufacturing method is a method for manufacturing a touch panel including a transparent substrate having a main surface on which a transparent-electroconductive film is formed. The transparent-electroconductive film is formed on the main surface of the transparent substrate by carrying out sputtering using a target made of a zinc oxide-based material in a reactive gas atmosphere containing two or three gases selected from a group consisting of hydrogen gas, oxygen gas, and water vapor.
    Type: Application
    Filed: July 3, 2009
    Publication date: April 21, 2011
    Applicant: ULVAC, INC.
    Inventors: Hirohisa Takahashi, Satoru Ishibashi
  • Publication number: 20110062015
    Abstract: An apparatus for coating a substrate with a layer of inhomogeneous but continuous thickness is provided. The apparatus may include a holding device configured to hold a substrate to be coated; a coating device comprising at least one coating source for providing a coating material, which is arranged at a distance from the holding device; and at least one magnetizing device configured to generate a predetermined magnetic field in the region between the substrate to be coated and the coating source. The magnetizing device may be arranged on the opposite side of the holding device to the coating source.
    Type: Application
    Filed: August 13, 2010
    Publication date: March 17, 2011
    Applicant: SOLARWORLD INNOVATIONS GMBH
    Inventors: Martin Kutzer, Andreas Krause, Alexander Fuelle
  • Publication number: 20110048927
    Abstract: An inexpensive sputtering apparatus of simple construction is provided in which a film can be formed with good coating characteristics relative to each of micropores of high aspect ratio. The sputtering apparatus has: a target lying opposite to a substrate W which is disposed inside a vacuum chamber; a magnet assembly which generates a tunnel-shaped magnetic field in front of a sputtering surface of the target; a gas introduction means which introduces a sputtering gas into the vacuum chamber; and a sputtering power supply which charges negative potential to the target. There are provided magnetic field generating means to generate a vertical magnetic field of such a nature that vertical lines of magnetic force M pass through a sputtering surface and through an entire surface of the substrate at a predetermined distance from one another.
    Type: Application
    Filed: June 23, 2009
    Publication date: March 3, 2011
    Inventors: Naoki Morimoto, Tomoyasu Kondo, Kokichi Kamada, Kyuzo Nakamura
  • Publication number: 20110036708
    Abstract: An exemplary magnetron sputtering device includes a target, a magnet arrangement, and a driving system. The target defines a magnet-receiving space therein. The magnet arrangement is received within the magnet-receiving space. The driving system is configured for driving the magnet arrangement to spin and move back and forth.
    Type: Application
    Filed: December 30, 2009
    Publication date: February 17, 2011
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: CHIA-YING WU, CHING-CHOU CHANG
  • Publication number: 20110005926
    Abstract: A rotating magnetron assembly having a structure to reduce bearing degradation by substantially preventing the flow of current through the bearing using non-conductive materials or providing a low resistance current flow path or by allowing current to flow through the bearing in a way which prevents arcing between the various bearing components.
    Type: Application
    Filed: July 29, 2009
    Publication date: January 13, 2011
    Inventors: Neal W. Matuska, Joel T. Anderson, Clifford L. Taylor, John R. German
  • Publication number: 20110005920
    Abstract: Various embodiments of the present invention are generally directed to an apparatus and method for low temperature physical vapor deposition (PVD) of an amorphous thin film layer of material onto a substrate. A PVD chamber is configured to support a substrate and has a cathode target with a layer of sputtering material thereon, an anode shield, and a magnetron assembly adjacent the target. A high impulse power magnetron sputtering (HiPIMS) power supply is coupled to the PVD chamber, the power supply having a charging circuit and a charge storage device. The power supply applies relatively high energy, low duty cycle pulses to the magnetron assembly to sputter, via self ionizing plasma, relatively low energy ions from the layer of sputtering material to deposit an amorphous thin film layer onto the substrate.
    Type: Application
    Filed: July 13, 2009
    Publication date: January 13, 2011
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Ivan Petrov Ivanov, Antoine Khoueir, Wei Tian, Paul E. Anderson, Lili Jia, Yongchul Ahn, Michael Xuefei Tang, Yang Dong
  • Publication number: 20100230282
    Abstract: A magnet structure and the like are provided, which can reduce the labor required to make a magnet design for producing a tunnel-shaped leakage magnetic field for plasma confinement in a well-balanced manner over an obverse surface of a target, based on a quadridirectional magnetic field produced by magnetic interaction between plural magnets.
    Type: Application
    Filed: August 23, 2006
    Publication date: September 16, 2010
    Applicant: Shinmaywa Industries, Ltd.
    Inventors: Takahiko Kondo, Keisuke Kondo, Takanobu Hori, Yasukuni Iwasaki, Nobuo Yoneyama