Focusing Means For Ion Beam Coating Material Or Focused Ion Beam Gas Energizing Means (i.e., Excluding Ion Plating Or Ion Implanting) Patents (Class 118/723FI)
  • Patent number: 6146462
    Abstract: Methods and apparatus for plasma modifying a substrate are disclosed along with associated techniques for applying coatings to the substrate. Particular utility has been found using a hollow cathode to generate the plasma along with magnetic focusing means to focus the plasma at the surface of a substrate.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: November 14, 2000
    Assignee: AstenJohnson, Inc.
    Inventors: Angelo Yializis, Richard E. Ellwanger, Michael G. Mikhael, Wolfgang Decker, C. Barry Johnson, Gale Shipley, Timothy D. O'Brien
  • Patent number: 6136387
    Abstract: An ion flow forming method and apparatus for attracting ions from a plasma generated in a plasma generation chamber and forming a flow of the ions are disclosed. This ion flow forming apparatus includes the plasma generation chamber having a plasma diffusion outlet port, a processing chamber accommodating a target object, for example, two electrodes arranged between the plasma generation chamber and the target object in the processing chamber, and a potential control unit. This potential control unit controls voltages to be applied to the plasma generation chamber, the two electrodes, and the processing chamber, so that the step of diffusing the plasma generated in the plasma generation chamber in a space between the two electrodes, the ion attraction step of repelling electrons in the diffused plasma toward the plasma generation chamber and attracting the ions in the plasma in an opposite direction, and the ion flow formation step of directing the ions toward the target object are sequentially performed.
    Type: Grant
    Filed: July 27, 1998
    Date of Patent: October 24, 2000
    Assignee: Tokyo Electron Limited
    Inventor: Koji Koizumi
  • Patent number: 6132805
    Abstract: A shutter assembly located substantially within a thin-film processing chamber includes a plurality of articulatable components that are movable between open and closed positions within the chamber. The articulatable components are preferably arranged in the form of an iris to regulate a size of an opening centered along said central axis. The shutter assembly can be used to isolate transmissions between a process energy source such as a PVD target and a substrate or to limit a range of incidence angles at which the transmissions reach the substrate. The shutter apparatus of this invention does not add any area to the footprint of processing equipment, enables very fast shuttering between open and closed positions, and enables enhanced process control.
    Type: Grant
    Filed: October 20, 1998
    Date of Patent: October 17, 2000
    Assignee: CVC Products, Inc.
    Inventor: Mehrdad M. Moslehi
  • Patent number: 6126790
    Abstract: An electromagnet assembly magnetically orients a thin magnetic film deposited onto a surface of a substrate. The magnetic orientation can take place in a low-pressure processing environment such as during the deposition of the thin magnetic film or during a subsequent operation such as annealing. The electromagnet assembly includes a plate-shaped core located adjacent to the substrate and two or more electromagnetic coils that are wrapped in different directions around the core. Electrical currents conveyed through the electromagnetic coils are controlled for orienting a substantially uniaxial magnetic field throughout a range of angular positions in a plane of the substrate surface.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: October 3, 2000
    Assignee: CVC Products, Inc.
    Inventors: Mehrdad M. Moslehi, Shiyuan Cheng, Cecil J. Davis, Dorian Heimanson
  • Patent number: 6125789
    Abstract: A method and apparatus for increasing the sensitivity of an in situ particle monitor. A light scattering technique, preferably using laser light, is employed to monitor particle concentrations within the processing chamber of a plasma-based substrate processing system. Particle concentrations are increased in the light field of the sensor by creating an electric or magnetic field in the processing chamber to concentrate the particles suspended therein.
    Type: Grant
    Filed: January 30, 1998
    Date of Patent: October 3, 2000
    Assignee: Applied Materials, Inc.
    Inventors: Anand Gupta, Vijay Parkhe
  • Patent number: 6124003
    Abstract: A film is deposited on a target object by exposing the target object to film deposition plasma of a film deposition material gas while irradiating the target object with ion beams. An ion source is used for the irradiation with the ion beams. The ion source has a plasma container and an ion beam producing electrode system formed of four electrodes. The plasma container and the first electrode located in an inner position nearest to the plasma container carry a positive potential. The second electrode carries a negative potential or a lower potential than the film deposition plasma. The third electrode carries a positive potential or a higher potential than the film deposition plasma. The fourth electrode in the outer position remotest from the plasma container carries a ground potential.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: September 26, 2000
    Assignee: Nissin Electric Co., Ltd.
    Inventors: Takashi Mikami, Hiroshi Murakami
  • Patent number: 6116187
    Abstract: A thin film forming apparatus has a vacuum chamber as a film forming chamber, a plasma generating unit and an ion source. In the vacuum chamber, a substrate is placed and a thin film is formed on the substrate. The plasma generating unit decomposes a source gas introduced into the vacuum chamber to generate a plasma of the source gas near a film-forming surface of the substrate within the vacuum chamber. The ion source is provided around the vacuum chamber. The ion source produces ion beams that are drawn out to be directed substantially parallel to the film-forming surface of the substrate to irradiate the plasma.
    Type: Grant
    Filed: May 20, 1999
    Date of Patent: September 12, 2000
    Assignee: Nissin Electric Co., Ltd.
    Inventors: Hiroshi Murakami, Takashi Mikami, Kiyoshi Ogata
  • Patent number: 6109207
    Abstract: A semiconductor having at least one p-channel transistor (10) with shallow p-type doped source/drain regions (16 and 18) which contain boron implanted into the doped regions (16 and 18) in the form of a compound which consists of boron and an element (or elements) selected from the group which consists of element of substrate (21) and elements which forms a solid solution with the substrate (21). In particular, in the case of silicon substrate, the compound may comprise BSi2, B2Si, B4Si and B6Si. The use of such compounds enables the highly reliable contacts to be formed on the p-doped regions.
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: August 29, 2000
    Assignee: Advanced Materials Engineering Research, Inc.
    Inventors: Peiching Ling, Tien Tien
  • Patent number: 6105534
    Abstract: An apparatus for processing substrates with a plasma jet with increased throughput is described. The apparatus comprises at least two carrousels for holding a plurality of substrates. Each of the carrousels includes a rotatable angle drive having a rotation axis Da, a plurality of arms extending radially from the angle drive and a plurality of rotatable substrate holders. Each of the substrate holders is connected to one of the arms, each of the rotatable substrate holders has a rotation axis Ha positioned at a distance R from the rotation axis Da of the rotatable angle drive. The carousel angle drive provides programmable motion of the substrates being treated relative to a plasma jet generator. The plasma jet generator is movable from a first position Z.sub.1 adjacent to the first carousel to a second position Z.sub.2 adjacent to the second carousel. While the substrates on the first carousel are being treated by the plasma jet, the substrates on the second carousel can be loaded or unloaded.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: August 22, 2000
    Assignee: IPEC Precision, Inc.
    Inventors: Oleg Siniaguine, Iskander Tokmouline
  • Patent number: 6092485
    Abstract: A substrate processing apparatus includes a processing chamber and a vacuum spare chamber adjacent thereto through a vacuum valve. The processing chamber houses two holders for holding substrates on their surfaces on the same side. The processing chamber is provided with an ion source for irradiating the substrate on each holder having reached a processing position P with an ion beam so that it is subjected to ion implantation. The processing chamber is internally provided with a holder moving mechanism for performing the operation of moving the two holders in parallel independently from each other so that they traverse the processing position P, and moving the two holders in parallel simultaneously between the insides of the processing chamber and vacuum spare chamber through the vacuum valve.
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: July 25, 2000
    Assignee: Nissin Electric Co., Ltd.
    Inventors: Yasunori Ando, Masatoshi Onoda
  • Patent number: 6089186
    Abstract: The invention provides a vacuum coating forming device for forming a thin-film coating by a plasma beam on a substrate arranged in a vacuum chamber, the vacuum coating forming device being provided with a pressure gradient type plasma gun for generating the plasma beam toward the vacuum chamber and a converging coil which is provided so as to surround a short-tube portion of the vacuum chamber projecting toward an outlet of the plasma gun and which reduces a cross section of the plasma beam. This vacuum coating forming device further comprises an insulating tube provided at the outlet so as to surround the plasma beam and project in electric floating state, and an electron return electrode which surrounds the insulating tube within the short-tube portion and which is higher in electric potential than the outlet.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: July 18, 2000
    Assignees: Chugai Ro Co., Ltd., Dai Nippon Printing Co., Ltd.
    Inventors: Kinya Kisoda, Eiji Furuya, Ryoichi Ohigashi
  • Patent number: 6051120
    Abstract: There is provided a thin film forming apparatus in which plasma of high frequency is made of raw material gas in a film forming chamber 7, a thin film is formed on a surface of a substrate 12 in the film forming chamber 7 by the plasma of high frequency, and a characteristic of the thin film is controlled by irradiating ion beams 4 onto the surface of the substrate 12 at the same time, characterized in that: the substrate 12 is composed of a square plate having a regular square surface or a rectangular surface; and the thin film forming apparatus is provided with a high frequency electrode 13 for forming the plasma of high frequency into a cube or a rectangular parallelepiped to cover an overall surface of the substrate 12, on the surface side of the substrate 12.
    Type: Grant
    Filed: November 24, 1998
    Date of Patent: April 18, 2000
    Assignee: Nissin Electric Co., Ltd.
    Inventors: Shigeaki Kishida, Takashi Mikami, Hiroya Kirimura, Kiyoshi Ogata
  • Patent number: 6042707
    Abstract: An electromagnet assembly magnetically orients a thin magnetic film deposited onto a surface of a substrate. The magnetic orientation can take place in a low-pressure processing environment such as during the deposition of the thin magnetic film or during a subsequent operation such as annealing. The electromagnet assembly includes a plate-shaped core located adjacent to the substrate and two or more electromagnetic coils that are wrapped in different directions around the core. Electrical currents conveyed through the electromagnetic coils are controlled for orienting a substantially uniaxial magnetic field throughout a range of angular positions in a plane of the substrate surface.
    Type: Grant
    Filed: May 22, 1998
    Date of Patent: March 28, 2000
    Assignee: CVC Products, Inc.
    Inventors: Mehrdad M. Moslehi, Shiyuan Cheng, Cecil J. Davis, Dorian Heimanson
  • Patent number: 6032611
    Abstract: In order to form a single-crystalline thin film on a polycrystalline substrate using plasma CVD, a downwardly directed mainly neutral Ne atom current is formed by an ECR ion generator (2). A reaction gas such as silane gas which is supplied from a reaction gas inlet pipe (13) is sprayed onto an SiO.sub.2 substrate (11) by an action of the Ne atom current, so that an amorphous Si thin film is grown on the substrate (11) by a plasma CVD reaction. At the same time, a part of the Ne atom current having high directivity is directly incident upon the substrate (11), while another part thereof is incident upon the substrate (11) after its course is bent by a reflector (12). The reflector (12) is so set that all directions of the parts of the Ne atom current which are incident upon the substrate (11) are perpendicular to densest planes of single-crystalline Si.
    Type: Grant
    Filed: March 19, 1997
    Date of Patent: March 7, 2000
    Assignees: Neuralsystems Corporation, Mega Chips Corporation
    Inventors: Toshifumi Asakawa, Masahiro Shindo, Toshikazu Yoshimizu, Sumiyoshi Ueyama
  • Patent number: 6014944
    Abstract: A method and apparatus is presented for crystallizing a thin film on a surate by generating a beam of pulsed optical energy, countouring the intensity profile of the beam, and illuminating the thin film with the beam to crystallize the thin film into a single crystal lattice structure.
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: January 18, 2000
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Monti E. Aklufi, Stephen D. Russell
  • Patent number: 5948169
    Abstract: Apparatus for reducing a material deposition in a housing is disclosed herein. The apparatus includes: a first pressure sensing device which senses a pressure in a reaction chamber, a pumping device for pumping the vapor from the reaction chamber to the pumping device, a valve that is opened when the pressure is larger than a first value and smaller than a second value, a bypass valve which is closed when the pressure is larger than the third value and smaller than the fourth value, a check valve that blocks a gas flow from the check valve to the bypass valve, and a pipe for connecting all of the above.
    Type: Grant
    Filed: March 11, 1998
    Date of Patent: September 7, 1999
    Assignee: Vanguard International Semiconductor Corporation
    Inventor: Wen-Kai Wu
  • Patent number: 5910220
    Abstract: An ion beam deposition process for selective area deposition on a polarized substrate uses a potential applied to the substrate which allows the ionized particles to reach into selected areas for film deposition. Areas of the substrate to be left uncoated are held at a potential that repells the ionized particles.
    Type: Grant
    Filed: August 5, 1994
    Date of Patent: June 8, 1999
    Assignee: Martin Marietta Energy Systems, Inc.
    Inventors: Raymond A. Zuhr, Tony E. Haynes, Andrzej Golanski
  • Patent number: 5811820
    Abstract: A device for the parallel processing of ions is provided. The device may be utilized for thin film deposition or ion implantation and may include the following: an ion source, ion capture and storage ion optics, mass selection ion optics, neutral trapping elements, extraction ion optics, beam neutralization mechanisms, and a substrate on which deposition and thin film growth occurs is provided. Ions are captured and stored within a closely packed array of parallel ion conducting channels. The ion conducting channels transport high current low energy ions from the ion source to irradiate the substrate target. During transport, ion species can be mass selected, merged with ions from multiple sources, and undergo gas phase charge exchange ion molecule reactions.
    Type: Grant
    Filed: June 12, 1996
    Date of Patent: September 22, 1998
    Assignee: Massively Parallel Instruments, Inc.
    Inventors: Nicholas J. Kirchner, Felix G. Gutman, Oleg V. Alexandrov, Efim A. Dynin
  • Patent number: 5795385
    Abstract: In order to form a single-crystalline thin film on a polycrystalline substrate using plasma CVD, a downwardly directed mainly neutral Ne atom current is formed by an ECR ion generator (2). A reaction gas such as silane gas which is supplied from a reaction gas inlet pipe (13) is sprayed onto an SiO.sub.2 substrate (11) by an action of the Ne atom current, so that an amorphous Si thin film is grown on the substrate (11) by a plasma CVD reaction. At the same time, a part of the Ne atom current having high directivity is directly incident upon the substrate (11), while another part thereof is incident upon the substrate (11) after its course is bent by a reflector (12). The reflector (12) is so set that all directions of the parts of the Ne atom current which are incident upon the substrate (11) are perpendicular to densest planes of single-crystalline Si.
    Type: Grant
    Filed: March 18, 1997
    Date of Patent: August 18, 1998
    Assignees: Neuralsystems Corporation, Mega Chips Corporation
    Inventors: Toshifumi Asakawa, Masahiro Shindo, Toshikazu Yoshimizu, Sumiyoshi Ueyama
  • Patent number: 5776253
    Abstract: In order to form a single-crystalline thin film on a polycrystalline substrate using plasma CVD, a downwardly directed mainly neutral Ne atom current is formed by an ECR ion generator (2). A reaction gas such as silane gas which is supplied from a reaction gas inlet pipe (13) is sprayed onto an SiO.sub.2 substrate (11) by an action of the Ne atom current, so that an amorphous Si thin film is grown on the substrate (11) by a plasma CVD reaction. At the same time, a part of the Ne atom current having high directivity is directly incident upon the substrate (11), while another part thereof is incident upon the substrate (11) after its course is bent by a reflector (12). The reflector (12) is so set that all directions of the parts of the Ne atom current which are incident upon the substrate (11) are perpendicular to densest planes of single-crystalline Si.
    Type: Grant
    Filed: March 19, 1997
    Date of Patent: July 7, 1998
    Assignees: Neuralsystems Corporation, Mega Chips Corporation
    Inventors: Toshifumi Asakawa, Masahiro Shindo, Toshikazu Yoshimizu, Sumiyoshi Ueyama
  • Patent number: 5747818
    Abstract: Apparatus for supplying a jet of chemical vapor at a substantially constant rate comprises a crucible for containing a quantity of chemical, a hollow needle, a flow path from the crucible to the hollow needle, a Peltier element in thermal communication with the crucible, and a temperature control circuit responsive to temperature in the crucible for powering the Peltier element so as to maintain temperature of the crucible substantially constant. The temperature control circuit powers the Peltier element so as to maintain temperature of the crucible below (or above) ambient temperature. The apparatus is useful in a system for modifying an integrated circuit specimen which further comprises a vacuum chamber and an ion-optical column for directing a focused ion beam at an integrated circuit specimen within the vacuum chamber. Control of vapor pressure, and thus flow rate, offers improved control over FIB processing of integrated circuit specimens.
    Type: Grant
    Filed: October 21, 1996
    Date of Patent: May 5, 1998
    Assignee: Schlumberger Technologies Inc.
    Inventor: Michael A. Cecere
  • Patent number: 5656092
    Abstract: A method of capturing and removing contaminant particles moving within an evacuated interior region of an ion beam implanter is disclosed. The steps of the method include: providing a particle collector having a surface to which contaminant particles readily adhere; securing the particle collector to the implanter such that particle adhering surface is in fluid communication to the contaminant particles moving within the interior region; and removing the particle collector from the implanter after a predetermined period of time.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: August 12, 1997
    Assignee: Eaton Corporation
    Inventors: Julian G. Blake, Robert Becker, David Chipman, Mary Jones, Lyudmila Menn, Frank Sinclair, Dale K. Stone
  • Patent number: 5639308
    Abstract: A plasma apparatus generates plasma by introducing electron beams into a processing chamber filled with a reactive gas for irradiation of the reactive gas with the introduced electron beams, to process a substance by the generated plasma. The plasma apparatus has a sample base for mounting the substance to be processed so that a processing surface of the substance is not directed in a direction perpendicular to a travel direction of the electron beams introduced into the processing chamber; a suppressing section for suppressing divergence of the electron beams introduced into the processing chamber; and a control section for controlling current density distribution of the divergence-suppressed electron beams so that current density distribution of ions contained in the plasma can be uniformalized on the substance to be processed.
    Type: Grant
    Filed: November 3, 1995
    Date of Patent: June 17, 1997
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yuichiro Yamazaki, Motosuke Miyoshi, Katsuya Okumura
  • Patent number: 5601653
    Abstract: A plasma processing apparatus for performing plasma process on a semiconductor or the like draws an electron beam from an electron source plasma and, after acceleration, introduces the electron beam into a reaction chamber where a requisite gas is supplied for performing plasma process on the semiconductor wafer. At least one pair of magnets are provided in the chamber with an electron beam path created therebetween. The electron beam is formed into a sheet-like configuration through a magnetic field created by the at least one pair of magnets. The at least one pair of magnets are positioned in an opposed relation to allow the semiconductor wafer to be subjected at a uniform rate to plasma process.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: February 11, 1997
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Masao Ito
  • Patent number: 5601652
    Abstract: An apparatus for applying ceramic coatings using an electron beam-physical vapor deposition apparatus is described. The apparatus includes means for introducing the anionic constitutent of the ceramic into a coating chamber and means for confining the anionic constituent about the component to be coated during the coating process.
    Type: Grant
    Filed: August 3, 1989
    Date of Patent: February 11, 1997
    Assignee: United Technologies Corporation
    Inventors: Richard S. Mullin, Leo A. Riendeau, Nicholas E. Ulion
  • Patent number: 5552124
    Abstract: A stationary focus ring for use in a plasma reactor during wafer processing includes a first slotted opening through which a wafer transfer blade and wafer may pass, and includes a second slotted opening, where the two openings cooperate to provide a balanced gas flow distribution across the wafer surface, such that process uniformity is achieved across the wafer surface, while minimizing the actual size of the openings to provide an increased level of reaction commensurate with that of a solid, movable focus ring. Alternatively, a thick focus ring that displaces chamber volume and thereby stabilizes gas flow within the chamber has a circular, an eccentric, and/or a baffle configuration to provide uniform gas flow distribution across the wafer surface.
    Type: Grant
    Filed: June 22, 1994
    Date of Patent: September 3, 1996
    Assignee: Applied Materials, Inc.
    Inventor: Yin-Jia Su
  • Patent number: 5545257
    Abstract: Disclosed herein is a system and method for providing a plasma flood having a low electron temperature to a semiconductor target region during an ion implantation process. The plasma generator providing the plasma is coupled to a magnetic filter which allows ions and low energy electrons to pass therethrough while retaining captive the primary or high energy electrons. The ions and low energy electrons form a "cold plasma" which is diffused in the region of the process surface while the ion implantation process takes place.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: August 13, 1996
    Assignee: Electro-Graph, Inc.
    Inventor: Michael C. Vella
  • Patent number: 5525158
    Abstract: A thin film deposition apparatus for use in a semiconductor manufacturing process or the like, is provided to, in particular, deposit a diffusion barrier thin film onto a substrate having a concave portion with a relatively high aspect ratio (hereinafter referred to as a contact hole). In the thin film deposition apparatus, a small surface and point source or a ring-shaped source is employed, evaporation is performed under such a condition that the Knudsen number K.sub.n =.lambda./H (a ratio of a mean free path .lambda. of an evaporation material particle to a distance (H) between the evaporation source and the substrate) becomes 0.1 or more, and a relation of the substrate and the evaporation source is set according to the aspect ratio of the contact hole, resulting in deposition of the thin film with good coverage on a bottom surface of the contact hole.
    Type: Grant
    Filed: September 29, 1993
    Date of Patent: June 11, 1996
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hisashi Tsukazaki, Goro Oakamoto, Yuki Ito, Kenichiro Yamanishi, Hiroki Ito, Masahiro Hanai, Hiroyuki Ishii
  • Patent number: 5509843
    Abstract: A method and apparatus exists for manufacturing needle-shaped materials for use as microemitters, wherein a light beam output from a light source is split into a plurality of beams and the split light beams are focused by an optical system and directed into a chamber having a gas containing electroconductive molecules. The electroconductive molecules are degraded through excitation by the beams directed into the chamber to deposit needle-shaped materials on a substrate disposed in the chamber. By so doing, a plurality of needle-shaped materials are simultaneously produced on the substrate in accordance with a corresponding number of beams obtained through splitting.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: April 23, 1996
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yoshiaki Akama
  • Patent number: 5487787
    Abstract: The substrate in a plasma jet deposition system is provided with structural attributes, such as apertures and/or grooves, that facilitate efficient deposition. Groups of substrates are arranged with respect to the plasma beam in a manner which also facilitates efficient deposition. In addition to increasing the portion of the plasma beam volume which contacts the substrate surface or surfaces, it is advantageous to provide for the efficient evacuation of spent fluids away from the substrate so that fresh plasma containing the operative species can easily and continuously contact the substrate surface.
    Type: Grant
    Filed: January 6, 1995
    Date of Patent: January 30, 1996
    Assignee: Celestech, Inc.
    Inventors: Gordon L. Cann, Cecil B. Shepard, Jr., Frank X. McKevitt
  • Patent number: 5435849
    Abstract: The substrate in a plasma jet deposition system is provided with structural attributes, such as apertures and/or grooves, that facilitate efficient deposition. Groups of substrates are arranged with respect to the plasma beam in a manner which also facilitates efficient deposition. In addition to increasing the portion of the plasma beam volume which contacts the substrate surface or surfaces, it is advantageous to provide for the efficient evacuation of spent fluids away from the substrate so that fresh plasma containing the operative species can easily and continuously contact the substrate surface.
    Type: Grant
    Filed: January 13, 1993
    Date of Patent: July 25, 1995
    Assignee: Celestech, Inc.
    Inventors: Gordon L. Cann, Cecil B. Shepard, Jr., Frank X. McKevitt
  • Patent number: 5362353
    Abstract: An improved Faraday Cage is provided for use in reducing ion damage to semiconductor wafers during plasma etching. The improved Faraday Cage consists of a cylindrical metallic chamber having a cap at one or more ends. Semiconductor wafers are placed within the Cage and the Cage is suitably disposed within a plasma etcher. The caps substantially reduce the amount of harmful radiation which can enter the Cage and thereby ion damage to the wafers contained therein. The improved Faraday Cage can be conveniently integrated with a barrel-style plasma etcher by securing one of the Cage caps to the door of the plasma etcher such that opening and closing the door serves to disengage and engage one of the caps from the Cage.
    Type: Grant
    Filed: February 26, 1993
    Date of Patent: November 8, 1994
    Assignee: LSI Logic Corporation
    Inventor: Thomas G. Mallon
  • Patent number: 5342448
    Abstract: A method of processing a sample using a charged beam and reactive gases and a system employing the same, the method and system being able to perform the reactive etching and the beam assisted deposition using a charged particle detector free from the degradation of the performance due to the reactive gas. The system is designed in such a way that a shutter mechanism is provided in the form of the charged particle detector, and a chamber for accommodating the charged particle detector can be evacuated. In the observation of the sample, the charged particle detector is turned on to open the shutter mechanism, and in the processing of the sample, the charged particle detector is turned off or left as it is to shut the shutter mechanism to evacuate the inside of the charged particle detector.
    Type: Grant
    Filed: March 31, 1993
    Date of Patent: August 30, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Yuuichi Hamamura, Satoshi Haraichi, Akira Shimase, Junzou Azuma, Fumikazu Itoh, Toshio Yamada, Yasuhiro Koizumi, Michinobu Mizumura
  • Patent number: 5284544
    Abstract: An apparatus for surface treatment according to the present invention used for carrying out dry etching, thin film deposition and so forth is provided with a neutral beam etching apparatus in order to improve etching rate. In an embodiment, microwave wave-guides forming a duplex tube, a discharge tube, a pair of solenoids arranged coaxially, a multiaperture electrode for extracting an ion beam, gas supply pipes, a set of charged particle retarding grids, a device for controlling temperature of a specimen and a vacuum unit are provided.
    Type: Grant
    Filed: October 17, 1990
    Date of Patent: February 8, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Tatsumi Mizutani, Takashi Yunogami
  • Patent number: RE34806
    Abstract: Embodiments of magnetoplasmadynamic processors are disclosed which utilize specially designed cathode-buffer, anodeionizer and vacuum-insulator/isolator structures to transform a working fluid into a beam of fully ionized plasma. The beam is controlled both in its size and direction by a series of magnets which are mounted in surrounding relation to the cathode, anode, vacuum insulator/isolators and plasma beam path. As disclosed, the processor may be utilized in many diverse applications including the separation of ions of differing weights and/or ionization potentials and the deposition of any ionizable pure material. Several other applications of the processor are disclosed.
    Type: Grant
    Filed: May 4, 1992
    Date of Patent: December 13, 1994
    Assignee: Celestech, Inc.
    Inventor: Gordon L. Cann