Including Preparing Or Arranging Work For Heating Patents (Class 432/5)
  • Patent number: 6582221
    Abstract: A substrate holder for vertical furnaces is configured to support substrates in slots at inner portions of the substrates, rather than solely at the edges. The holder allows sufficient clearance above substantially the entire front face of the substrate that a substrate deflection or bow, induced by thermal stresses during loading and unloading of the substrate holder into and out of the furnace, can be accommodated without the substrate touching the support members of the substrate holder. A relationship is established such that, for given loading/unloading temperatures, a minimum amount of free space in the wafer slots is provided to avoid substrate scratching. Conversely, for a given amount of free space in the wafer slots, the relationship provides maximum loading and/or unloading temperatures to avoid scratching.
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: June 24, 2003
    Assignee: ASM International N.V.
    Inventor: Theodurus Gerardus Maria Oosterlaken
  • Patent number: 6561796
    Abstract: Bowing of semiconductor wafers during heating is reduced by heating the wafers in a gas with a thermal conductivity and mean free path greater than that of oxygen, or by heating the wafers in a processing chamber under a pressure less than 0.1 Torr. In one embodiment, the high thermal conductivity gas is helium and heating in the helium takes place at a pressure less than 2.4 Torr.
    Type: Grant
    Filed: September 6, 2000
    Date of Patent: May 13, 2003
    Assignee: Novellus Systems, Inc.
    Inventors: Martin M. Barrera, George Kamian, Edward J. McInerney, Craig L. Stevens
  • Publication number: 20030044742
    Abstract: A positive pressure gradient is maintained across an open access port of an interface chamber such as a load lock chamber which provides an interface between a low pressure chamber such as a transfer or buffer chamber, and a high pressure area such as a staging area or factory interface area. When the access port of the interface chamber is open to the high-pressure area, the positive pressure gradient may be used in some applications to inhibit the flow of gasses from the high-pressure area into the interior of the interface chamber.
    Type: Application
    Filed: August 27, 2002
    Publication date: March 6, 2003
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Hougong Wang, Zheng Xu, Kenny King-Tai Ngan
  • Publication number: 20030027094
    Abstract: Method and device for the heat treatment of substrates, wherein the substrates are positioned in the vicinity of a heated, essentially flat furnace body extending over the surface of the substrate. In order to provide a reproducible treatment when treating a number of substrates successively, the temperature of the furnace body is measured so close to the surface adjacent to the substrate that the withdrawal of heat from the furnace body by the substrate can be detected. The introduction of each substrate takes place at a point in time when the temperature measured in this way is, within certain limits, equal to a desired initial treatment temperature Ttrig.
    Type: Application
    Filed: May 16, 2002
    Publication date: February 6, 2003
    Inventors: Arjen Storm, Ronald Bast, Vladimir Ivanovich Kuznetsov, Jan Zinger
  • Patent number: 6511315
    Abstract: In a substrate processing apparatus, processing units are stacked in a multistage manner around a transport robot arranged at the center of a processing area for forming a processing part. In a second hierarchy, rotary coating units are arranged through an indexer and a transport robot. In a fourth hierarchy located above the second hierarchy, rotary developing units are stacked above the rotary coating units respectively. Multistage thermal processing units and an edge exposure unit are horizontally arranged above an interface mechanism part. Thus, a substrate processing apparatus capable of reducing the area for setting the same is provided.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: January 28, 2003
    Assignee: Dainippon Screen Mfg. Co., Ltd.
    Inventor: Koji Hashimoto
  • Publication number: 20020177094
    Abstract: A heating apparatus comprises a central hot plate for heating the center portion of a substrate, a plurality of segment hot plates for heating the peripheral portion of the substrate, a hot plate support member supporting the central hot plate and the segment hot plates, support pins for supporting the substrate so as to face the central hot plate and the segment hot plates in a close proximity without being in contact with the central hot plate and the segment hot plates, and a power supply for supplying electricity to the central hot plate and the segment hot plates.
    Type: Application
    Filed: May 22, 2002
    Publication date: November 28, 2002
    Inventor: Eiichi Shirakawa
  • Patent number: 6450805
    Abstract: In a heat processing apparatus for heating a wafer on a hot plate, a black plate having at least a rear face practically having a color with a JIS lightness of 0V to 4V is positioned above the hot plate. Moreover, cooling air is blown out from nozzles onto the rear face of the hot plate so that the temperature of the hot plate can be cooled rapidly.
    Type: Grant
    Filed: August 9, 2000
    Date of Patent: September 17, 2002
    Assignee: Tokyo Electron Limited
    Inventors: Tetsuya Oda, Mitsuhiro Tanoue, Toshichika Takei
  • Patent number: 6444974
    Abstract: Dummy wafers of SiC having low light transmission properties to light from the light source of a photo-sensor are used, and when wafers undergoes a heat treatment, the dummy wafers are transferred from a wafer cassette to a wafer boat in which the number of dummy wafers and a state of arrangement of the wafers are detected or monitored.
    Type: Grant
    Filed: July 14, 1999
    Date of Patent: September 3, 2002
    Assignees: Asahi Glass Company Ltd., Tokai Carbon Company Ltd.
    Inventor: Hiroshi Kojima
  • Patent number: 6435868
    Abstract: A load lock chamber includes a chamber body having an aperture to allow a substrate to be transferred into or out of the chamber. The load lock chamber is configurable in several configurations, including a base configuration for providing a transition between two different pressures, a heating configuration for heating the substrate and providing a transition between two different pressures, and a cooling configuration for cooling the substrate and providing a transition between two different pressures. Various features of the chamber configurations help increase the throughput of the system by enabling rapid heating and cooling of substrates and simultaneous evacuation and venting of the chamber, and help compensate for thermal losses near the substrate edges, thereby providing a more uniform temperature across the substrate.
    Type: Grant
    Filed: December 7, 2000
    Date of Patent: August 20, 2002
    Assignee: Applied Komatsu Technology, Inc.
    Inventors: John M. White, Wendell T. Blonigan, Michael W. Richter
  • Publication number: 20020102511
    Abstract: An apparatus for baking a wafer includes a heating plate for supporting the wafer to be baked, a lifting device for loading and unloading the wafer onto and from the upper surface of the heating plate, and a detector for detecting whether the wafer loaded by the lifting device onto the upper surface of the heating plate extends parallel to the upper surface, i.e., is situated correctly on the heating plate. The detector includes proximity sensors and a controller. The proximity sensors are disposed in or on the heating plate for sensing respective distances from the positions thereof to the wafer and generating signals indicative of whether the wafer is disposed more than a predetermined distance away from the sensors. The controller determines, on the basis of the signals generated by the proximity sensors, whether the baking process should be carried out and controls the baking process once it is initiated.
    Type: Application
    Filed: July 2, 2001
    Publication date: August 1, 2002
    Inventors: Il-Jung Choi, Kwang-Soo Hwang
  • Publication number: 20020076909
    Abstract: There is provided a semiconductor device manufacturing method which comprising the steps of forming solder bumps on an underlying metal film of a semiconductor device, and placing the semiconductor device and the solder layer in a reduced pressure atmosphere containing a formic acid to heat the solder bumps. Accordingly, the solder bumps can be formed without the use of flux not to generate voids in the solder layer, and also the cleaning required after the solder bumps are formed can be omitted.
    Type: Application
    Filed: December 13, 2001
    Publication date: June 20, 2002
    Applicant: FUJITSU LIMITED
    Inventors: Hirohisa Matsuki, Hiroyuki Matsui
  • Publication number: 20020072025
    Abstract: Target processing temperatures for a wafer and offset values are tabulated and stored in a temperature controller in advance. When a target processing temperature is changed, a hot plate temperature corresponding to the target processing temperature for the wafer is calculated based on the offset value in the table. Based on the calculated value, a heater controller controls a heater to change the hot plate temperature. Thereby, in a substrate heat processing apparatus for performing heat processing at different temperatures, an offset value corresponding to each temperature is automatically changed, whereby the substrate can be heated at an appropriate temperature.
    Type: Application
    Filed: February 4, 2002
    Publication date: June 13, 2002
    Inventors: Jun Ookura, Koji Harada
  • Patent number: 6354832
    Abstract: In a heat processing apparatus of a low-oxygen curing and cooling processing station, a plurality of blast ports are provided in a ring shutter along a thickness direction of a wafer and a heated inert gas is supplied into a heat processing chamber via the blast ports, so that both faces of the wafer can be heated while the inside of the heat processing chamber is exchanged for the inert gas. Accordingly, heat processing for the substrate can be efficiently performed in a short period of time.
    Type: Grant
    Filed: July 27, 2000
    Date of Patent: March 12, 2002
    Assignee: Tokyo Electron Limited
    Inventors: Yuta Yoshimura, Kei Miyazaki, Kyoshige Katayama, Takeshi Tamura
  • Publication number: 20010038988
    Abstract: In a heat processing apparatus structured to heat a wafer on a hot plate, a black plate at least the rear face of which practically has a color with a JIS lightness of 0V to 4V is positioned above the hot plate. Moreover, cooling air is blown out from nozzles onto the rear face of the hot plate. Thus, the temperature of the hot plate can be cooled rapidly.
    Type: Application
    Filed: April 12, 2001
    Publication date: November 8, 2001
    Applicant: Tokyo Electron Limited
    Inventors: Tetsuya Oda, Mitsuhiro Tanoue, Toshichika Takei, Eiichi Shirakawa
  • Patent number: 6290491
    Abstract: Heating (200) a semiconductor wafer (150) in a process chamber (100) is performed in the order of: placing (210) the wafer (100) with the backside (152) on a plurality of support elements (112) that extend from a chuck (100); ejecting (220) a heating gas (122, He) from a shower head (120) located within the process chamber (100) to the frontside (151) of the wafer (150); and moving (230) the support elements (112) into recesses (111) within the chuck (100) to that the wafer backside (152) touches the chuck (110).
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: September 18, 2001
    Assignees: Motorola, Inc., Semiconductor 300 GmbH & Co. KG, Infineon Technologies AG
    Inventors: Iraj Shahvandi, Oliver Vatel, Peggy John
  • Patent number: 6250914
    Abstract: The present invention provides a wafer heating device which can improve uniformity of a temperature distribution within a surface area of a wafer, with a relatively simple structure. A wafer is supported on a susceptor of annular shape. A first heater of disc shape is disposed below the wafer, and a second heater of annular shape is disposed to surround the first heater. Radiation thermometers are arranged at a ceiling portion of a reaction chamber. The first radiation thermometer measures a temperature of a central area of the wafer, the second radiation thermometer measures a temperature of a peripheral area of the wafer, and the third radiation thermometer measures a temperature of the susceptor. The first heater and the second heater are controlled by independent closed loops. When a wafer is set on the susceptor, a power of the second heater is controlled by using a value measured by the second radiation thermometer as a feedback signal.
    Type: Grant
    Filed: April 21, 2000
    Date of Patent: June 26, 2001
    Assignees: Toshiba Machine Co., Ltd, Toshiba Ceramics Co., Ltd.
    Inventors: Hirofumi Katsumata, Hideki Ito, Hidenori Takahashi, Tadashi Ohashi, Shuji Tobashi, Katsuyuki Iwata
  • Patent number: 6171982
    Abstract: An SOI substrate having on the surface thereof a single crystal silicon film formed on an insulator is heat-treated in a hydrogen-containing reducing atmosphere in order to smooth the surface and reduce the boron concentration without damaging the film thickness uniformity in a single wafer and among different wafers. The method is characterized in that the single crystal silicon film is arranged opposite to a member of non-oxidized silicon for heat treatment.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: January 9, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventor: Nobuhiko Sato
  • Patent number: 6097002
    Abstract: The invention concerns a device for heating plastics profile sections, in particular for heating PVC profile sections (35), the device comprising a box for holding the profile section. Said box has a support plate (3), side panels and a lid, as well as means for feeding hot air to one end face of the profile section (35) so that it can flow internally and externally past the profile section. Efficient operation is attained in that a return duct (21, 22, 23) is provided for returning and reheating the air when it has flowed through or around the profile section (35) in order to form a closed air circuit.
    Type: Grant
    Filed: August 28, 1998
    Date of Patent: August 1, 2000
    Assignee: Technoplast Kunststofftechnik GmbH
    Inventor: Pierre Huguet
  • Patent number: 6036482
    Abstract: When the processed body holding member is moved upward or downward, the pressure in the reaction pipe and the shift and mount chamber is reduced down to several to several tens Torr, to reduce wind pressure applied to the processed body and thereby to suppress pressure fluctuations in the reaction pipe. Further, when the processed body holding member is moved upward or downward, the processing gas is passed in the same direction as the movement direction of the processed body holding member at a speed higher than the movement speed of the processed body holding member, to prevent the processing gas from being opposed to the processed body, so that the resistance received by the processed body is reduced and thereby the pressure fluctuations can be suppressed in the reaction pipe.
    Type: Grant
    Filed: August 4, 1997
    Date of Patent: March 14, 2000
    Assignee: Tokyo Electron Limited
    Inventor: Wataru Okase
  • Patent number: 6033215
    Abstract: A heat treatment boat houses a plurality of semiconductor wafers in a manner separated at intervals for heat-treating the wafers in a heat treatment furnace. The heat treatment boat includes a bottom plate, a first support rod erected on the outer peripheral edge of the bottom plate, a second support rod and a third support rod both erected on the bottom plate so as to make an central angle of 105.degree. to 120.degree. with the first support rod with respect to the center of the respective wafer supported by the rods, and a top plate provided opposed to the bottom plate for holding the rods. The stresses applied to the wafers housed in the heat treatment boat are distributed equivalently to three contacting points with the rods and become the minimum.
    Type: Grant
    Filed: September 23, 1997
    Date of Patent: March 7, 2000
    Assignees: Tokyo Electron Limited, Tokyo Electron Tohoku Limited
    Inventor: Tetsu Ohsawa
  • Patent number: 5931662
    Abstract: The present invention is designed to provide an annealing method for silicon single crystal wafers, which makes it possible to increase the number of silicon single crystal wafers processed during a single annealing process under a variety of annealing performed on silicon single crystal wafers, such as oxygen outer diffusion annealing for forming a DZ layer, annealing that generates and controls BMD for providing IG functions, and annealing that endeavors to improve and enhance GOI characteristics by eliminating wafer surface layer COP, and internal grown-in defects, and also enables the suppression of dislocation and slip in elevated temperature annealing environments. It calls for annealing to be performed by stacking up around 10 wafers, treating this group as a unit, placing this group, either horizontally or slightly inclined at an angle of roughly 0.5.about.5.degree.
    Type: Grant
    Filed: March 12, 1998
    Date of Patent: August 3, 1999
    Assignee: Sumitomo Sitix Corporation
    Inventors: Naoshi Adachi, Takehiro Hisatomi, Masakazu Sano
  • Patent number: 5915957
    Abstract: Semiconductor wafers are transferred from a closed type cassette into a wafer boat. First, the lowermost five wafers of 13 wafers held in the cassette are simultaneously transferred by five arms from the cassette into the uppermost part of the wafer boat. Then, the lowermost three wafers among the wafers left in the cassette are simultaneously transferred by the upper three arms from the cassette into the boat immediately under the five wafers previously transferred. Further, the uppermost five wafers left in the cassette are simultaneously transferred by the five arms from the cassette into the boat immediately under the eight wafers previously transferred.
    Type: Grant
    Filed: March 30, 1998
    Date of Patent: June 29, 1999
    Assignee: Tokyo Electron Limited
    Inventor: Osamu Tanigawa
  • Patent number: 5829969
    Abstract: A vertical heat treating apparatus includes a first boat elevator for carrying a first wafer boat between a wafer transfer region and a predetermined position in a heat treating furnace, and a second boat elevator for carrying a second wafer boat between the wafer transfer region and the predetermined position in the heat treating furnace. With this construction, it is possible to eliminate the problems of causing the position shift of the wafer boat, so that and it is possible to prevent the wafer boat from overturning. The apparatus also has cutouts formed in the lower end portion of the wafer boat, and guide members formed on the upper surface of a wafer transfer stage so as to be engageable with the cutouts. With this construction, if the positioning is forcibly carried out when the wafer boat is loaded on the wafer transfer stage, it is possible to correct the position shift to prevent the shift from accumulating, so that it is possible to prevent the wafer boat from overturning.
    Type: Grant
    Filed: April 16, 1997
    Date of Patent: November 3, 1998
    Assignee: Tokyo Electron Ltd.
    Inventors: Masahiro Miyashita, Kenichi Yamaga, Katsuhiko Mihara
  • Patent number: 5820367
    Abstract: Support members are provided in a vertically spaced relation on a plurality of upright columns. A wafer support member comprises a projection formed to be annular along an inner peripheral edge of a ring and an outer wall formed along an outer peripheral edge thereof. The wafer is positively supported at a position inwardly of the outer peripheral edge thereof by the projection of the wafer support member despite the presence or absence of a warp thereof. Therefore, a load caused by the weight of the wafer is dispersed over the entire projection of the wafer support member. This suppresses the concentration of stress on a specific portion of the wafer support portion, and a surface defect called a slip generated when the wafer is heat treated can be eliminated.
    Type: Grant
    Filed: September 18, 1996
    Date of Patent: October 13, 1998
    Assignee: Tokyo Electron Limited
    Inventor: Tetsu Osawa
  • Patent number: 5816798
    Abstract: A conveying apparatus for a continuous furnace comprises at least one conveying-beam pair and at least one retaining-beam pair, which are located opposite one another in each case with the conveyable object between them, and which makes it possible to choose virtually any conveying direction, in particular a vertical one. By guiding the conveying beams in opposite directions along suitable curved paths, it may be ensured that abrasive contact does not occur between the objects which are to be conveyed and the retaining beams, on the one hand, and the conveying beams, on the other hand. The avoidance of abrasive contact means that there is virtually no wear during the transportation of the objects which are to be conveyed, with the result that it is possible to maintain clean conditions, as are frequently required in the electronics and semiconductor industry.
    Type: Grant
    Filed: May 13, 1997
    Date of Patent: October 6, 1998
    Assignee: Lukon Paul Luscher Werke AG
    Inventor: Erich Strohmaier
  • Patent number: 5813851
    Abstract: When a wafer boat having wafers, objects to be treated, placed thereon is loaded into a reaction tube, which is then raised in temperature by a heating section at a speed of 50.degree. C./min or more, a pressure reduction degree of the reaction tube is lowered or a hydrogen gas is supplied. A surface roughness of a portion in contact with the wafers on the wafer boat is 50 .mu.m or less. Thereby, a heat transfer coefficient relative to the wafers is improved to suppress an in-plane temperature difference smaller. Accordingly, when the objects to be treated are raised in temperature in the reaction tube for heat treatment, it is possible to suppress the in-plane temperature difference of the substances to be smaller to prevent an occurrence of a slip or warp which leads to the lowering of a yield.
    Type: Grant
    Filed: September 5, 1996
    Date of Patent: September 29, 1998
    Assignee: Tokyo Electron, Ltd.
    Inventor: Ken Nakao
  • Patent number: 5785518
    Abstract: A fixture for holding a plurality of masking elements while the masking elements are being baked to remove impurities is disclosed. The masking elements are used to mask dies used for forming sputtering targets used to deposit thin films on a substrate. The fixture includes a housing having first and second end walls connected between first and second side walls wherein the first and second end and side walls form an interior aperture. In addition, the fixture includes a several slots which are formed in the first and second side walls wherein each of the slots are suitable for holding a single masking element. In particular, the interior aperture is of a sufficient size and the slots are positioned such that suitable air circulation is provided between each of the masking elements to expose the masking elements to a predetermined temperature suitable for removing the impurities from the masking elements.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: July 28, 1998
    Assignees: Sony Corporation, Materials Research Corporation
    Inventor: Daniel R. Koshak
  • Patent number: 5752819
    Abstract: An exhaust system for use with a high temperature furnace used to perform oxidation and/or annealing operations of the type used in semiconductor fabrication. The exhaust system is designed to permit the furnace to be used with a controlled environment chamber surrounding the entry to the process chamber of the furnace. The exhaust system allows a relatively high velocity flow of exhaust gas from the process chamber through the exhaust system to occur when a positive pressure (e.g., annealing) operations are performed. Such high velocity flow prevents (a) backstreaming and (b) the accumulation of non-uniform concentrations of exhaust gases in the exhaust system, thereby permitting the accurate monitoring of the concentration of a selected gas in the exhaust system. Based on such monitoring, the opening of the door to the process chamber of the furnace may be prevented when the concentration of the selected gas exceeds a predetermined level.
    Type: Grant
    Filed: August 26, 1996
    Date of Patent: May 19, 1998
    Assignee: International Business Machines Corporation
    Inventors: Richard Rene Hansotte, Jr., Dieter Klaus Neff, Dennis Arthur Rock, Jeffrey Alan Walker, Roland Michael Wanser
  • Patent number: 5746591
    Abstract: The present invention is an improved semiconductor furnace system that reduces particles in the quartz tube and wafer boat. The cooling rate of conventional furnaces is too rapid in currently used processes. The thermal process includes high stress from polymorphic transformation, which causes the peeling of a polysilicon film and microcracking of the quartz tube and wafer boat. The present invention includes a bottom plate, a furnace tube, a wafer boat, a cooling water means, a thermocouple, a first heating element, and a second heating element. The second heating element limits the heating or cooling rates of the furnace to the range of 0.1.degree.-2.degree. C./min to reduce the temperature gradient inside the furnace tube. Therefore, the thermal stress that is caused by the phase transition of the quartz is reduced by the invention and the particles and microcrack issues are also reduced by the invention.
    Type: Grant
    Filed: August 15, 1996
    Date of Patent: May 5, 1998
    Assignee: Vanguard International Semiconductor Corporation
    Inventor: Liang-Gi Yao
  • Patent number: 5718574
    Abstract: A substrate holding assembly for horizontally holding a substrate to be treated is provided in a heat treatment chamber of a heat treatment apparatus. The substrate holding assembly has an annular base, and a plurality of fixed support projections provided on the annular base, for holding the underside of the substrate to be treated. A flexible beam portion is fixed to the annular base, or to a vertical support rod, and a flexible support projection is provided on the beam portion, for flexibly supporting a portion of the substrate to be treated which tends to flex downward under its own weight. Flexure caused by the own weight of the substrate to be treated held in the substrate holding assembly is thus corrected by the flexible holding portions. Accordingly, stresses caused in the substrates to be treated can be decreased or removed, and occurrence of slips in the substrate to be treated can be precluded in a high-temperature heat treatment. Accordingly, high yields can be obtained.
    Type: Grant
    Filed: February 27, 1996
    Date of Patent: February 17, 1998
    Assignee: Tokyo Electron Limited
    Inventor: Tomohisa Shimazu
  • Patent number: 5716207
    Abstract: A heating furnace and a method for uniformly thermo-setting a paste applied onto the surface of a substrate, and for manufacturing a high quality substrate. The heating furnace can be installed in a small area. A plurality of up-and-down moving pins are provided in a furnace body. The plurality of up-and-down moving pins are penetrating a hot plate having a heater and are vertically movable. A substrate loaded through an opening port in an isolation wall is mounted onto the up-and-down moving pins moved in their upper position. The substrate moved down near the hot plate using the up-and-down moving pins is preheated by the heated hot plate. Then, the substrate is further moved down and vacuum attracted to the hot plate to be heated by the hot plate. After that, the substrate is moved up to the original position and nitrogen gas from nozzles of a gas supply pipe is blown on the surface of the substrate to accelerate cooling of the substrate.
    Type: Grant
    Filed: July 26, 1996
    Date of Patent: February 10, 1998
    Assignee: Hitachi Techno Engineering Co., Ltd.
    Inventors: Haruo Mishina, Kiyoshi Imaisumi, Shinya Yamama
  • Patent number: 5709543
    Abstract: The vertical heat treatment apparatus according to the present invention in which a substrate holder holding a plurality of substrates-to-be-processed at a vertical interval is mounted on the top of a cap for opening and closing the bottom opening (furnace throat) of a vertical heat treatment furnace through a heat insulation structure for a heat treatment in the uniform heat region in the furnace, the heat insulation structure comprising support rods for supporting the substrate holder, and a plurality of thin heat insulation plates having insertion holes in which the support rods are loosely inserted in, and supported by the support rods, separated from each other by spacers at a prescribed interval in the direction of height of the support rods, whereby the heat insulation structure can have a simple structure and have decreased heat capacities, and throughput can be improved.
    Type: Grant
    Filed: September 4, 1996
    Date of Patent: January 20, 1998
    Assignee: Tokyo Electron Limited
    Inventor: Tomohisa Shimazu
  • Patent number: 5707228
    Abstract: The present invention relates to a heat treatment machine for laboratory use which has a cooling chamber incorporated with a heating chamber of a furnace, both chambers are formed with a vacuum tube of simple construction, in which heating and cooling of a test piece are performed in vacuum atmosphere. The cooling process can be effected following the heating process with maintaining the same vacuum atmosphere, whereby a rapid cooling of the test piece is allowed and physical characteristics of the treated metal can be improved.
    Type: Grant
    Filed: September 5, 1996
    Date of Patent: January 13, 1998
    Assignee: Hyundai Motor Company
    Inventor: Doo Hwan Lee
  • Patent number: 5678989
    Abstract: An object holder is raised, a mount portion is stopped at a middle stop position higher than a lower stop position, and an object of treatment is preheated. Thereafter, the object holder is further raised, the mount portion is stopped at an upper stop position in a processing tube higher than the middle position, and the object is heat-treated. A first temperature sensor for measuring a temperature on the obverse side of the object on the mount portion is located opposite the obverse side. A second temperature sensor for measuring a temperature on the reverse side of the object on the mount portion is located opposite the reverse side. The temperature of the object is detected in accordance with the respective outputs of the first and second temperature sensors.
    Type: Grant
    Filed: June 12, 1996
    Date of Patent: October 21, 1997
    Assignees: Tokyo Electron Kabushiki Kaisha, Tokyo Electron Tohoku Kabushiki Kaisha
    Inventor: Wataru Okase
  • Patent number: 5679168
    Abstract: A thermal treatment boat having a plurality of annular, coaxial, spaced apart bands having substantially the same inner diameters. The bands are separated by a band spacing distance of from about 3.8 to 12.7 mm, each of the bands having a height, Height.sub.Band, in mm according to the equation: ##EQU1## wherein Height.sub.Band is always.gtoreq.wafer thickness; ColumnHeight is the total height of the treatment boat, mm; BandSpacing is the band spacing distance between adjacent bands, mm; and NumberBands is the total number of bands in the treatment boat. Preferably the NumberBands is from about 12 to about 100. Each band includes wafer support means for supporting a wafer therein at a position which is substantially centered between the upper edge surface and said lower edge surface thereof, the wafer support means in one embodiment including at least three inwardly extending projections.
    Type: Grant
    Filed: November 28, 1995
    Date of Patent: October 21, 1997
    Assignee: Silicon Valley Group, Inc.
    Inventors: Cole D. Porter, Jessie R. Sanchez, Jeffrey M. Kowalski
  • Patent number: 5662470
    Abstract: A vertical furnace for processing wavers positioned on a support structure. The furnace comprises an inner sleeve, heating means and an outer sleeve. To support the inner sleeve on the support structure a support sleeve is provided engaging with its top and lower part of the inner sleeve and resting with its lower end on the support structure.
    Type: Grant
    Filed: March 31, 1995
    Date of Patent: September 2, 1997
    Assignee: ASM International N.V.
    Inventors: Frank Huussen, Gerard Berenpas, Albert Hasper, Chris G.M. De Ridder
  • Patent number: 5651670
    Abstract: The present invention relates to a thermal processing method wherein a cylindrical process tube that has at one end an entrance/exit is provided at the other end thereof with a heat source, and thermal processing is performed on a workpiece which has been brought in from the entrance/exit of the process tube to a prescribed position therein. This thermal processing method and an apparatus therefor is characterized in that, when the workpiece is moved to the prescribed position, it is first moved to a proximity position that is closer to the heat source than the prescribed position, then it is returned therefrom to the prescribed position.
    Type: Grant
    Filed: November 16, 1994
    Date of Patent: July 29, 1997
    Assignee: Tokyo Electron Sagami Kabushiki Kaisha
    Inventors: Wataru Okase, Yasushi Yagi, Satoshi Kawachi
  • Patent number: 5618351
    Abstract: Thermal treatment boat comprising a cylinder having a central axis and a plurality of band slots having opposed upper and lower surfaces in planes perpendicular to said central axis and spaced at predetermined locations along said central axis. At least one slot in each set extends around at least 180.degree. and less than of the full circumference of said cylinder. Pairs of adjacent band slots define an annular band therebetween. The height of each slot being from about 3.8 to 12.7 mm. Each of the bands having a height, Height.sub.Band, in mm, according to the equation: ##EQU1## wherein Height.sub.Band is always .ltoreq. wafer thickness; ColumnHeight is the total height of the cylinder, mm; BandSlotHeight is the height of the slot, mm; and NumberBands is the total number of bands in the treatment boat. The cylinder can include a wafer loading effector slot therethrough in a plane of the central axis extending along the length of the cylinder.
    Type: Grant
    Filed: November 28, 1995
    Date of Patent: April 8, 1997
    Assignee: Silicon Valley Group, Inc.
    Inventors: Terry A. Koble, Jr., Anthony Dip, Erik H. Engdahl, Ian R. Oliver, Christopher T. Ratliff
  • Patent number: 5616024
    Abstract: A ceramic heater composed of a ceramic substrate and a resistant heating element embedded within the ceramic substrate along a predetermined planar pattern is obtained by holding a convolution of a spiral-coiled high melting metallic filament in the above predetermined planar pattern and heat-treating the convolution at a temperature not higher than a primary recrystallization commencement temperature of the high melting metal under a non-oxidative atmosphere to provide the resistant heating element, embedding the resulting resistant heating element within a ceramic shaped body, and then, sintering the ceramic shaped body.
    Type: Grant
    Filed: January 27, 1995
    Date of Patent: April 1, 1997
    Assignee: NGK Insulators, Ltd.
    Inventors: Kazuhiro Nobori, Ryusuke Ushikoshi, Koichi Umemoto, Atsushi Sakon, Yusuke Niiori, Masahiro Murasato
  • Patent number: 5591026
    Abstract: In a baking oven for baking a relatively planar work such as semiconductor substrates, LCD panels and integrated circuit boards, a laterally elongated slot is formed in a shutter door which is moveable in the vertical direction. The oven main body is internally provided with a rack having a plurality of shelves which are each associated with the slot of the shutter door in such a manner that the work supported by each of the shelves of the rack may be aligned with the slot of the shutter door by appropriately determining the vertical position of the shutter door. Thus, by minimizing the area of the access opening of the oven main body, not only the loss of energy is minimized but also undesirable fluctuations in the internal temperature of the oven main body is minimized.
    Type: Grant
    Filed: December 26, 1995
    Date of Patent: January 7, 1997
    Assignee: Imai Seisakusho Co., Ltd.
    Inventor: Kazuhiro Imai
  • Patent number: 5588827
    Abstract: A substrate thermal conditioning apparatus with a chamber, a plate located in the chamber and a gas supply. The plate has a top heat transfer surface with grooves therealong. A substrate is placed on standoffs of the heat transfer surface and gas is pumped into the chamber. The plate is either heated or cooled to change the temperature of the substrate. Heat is transferred between the substrate and the plate primarily by gas conduction heating. Because of the grooves in the plate, the gas can be very quickly and uniformly distributed and evacuated between the substrate and the heat transfer surface.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 31, 1996
    Assignee: Brooks Automation Inc.
    Inventor: Richard S. Muka
  • Patent number: 5586880
    Abstract: A heat treatment boat houses a plurality of semiconductor wafers in a manner separated at intervals for heat-treating the wafers in a heat treatment furnace. The heat treatment boat includes a bottom plate, a first support rod erected on the outer peripheral edge of the bottom plate, a second support rod and a third support rod both erected on the bottom plate so as to make an central angle of 105.degree. to 120.degree. with the first support rod with respect to the center of the respective wafer supported by the rods, and a top plate provided opposed to the bottom plate for holding the rods. The stresses applied to the wafers housed in the heat treatment boat are distributed equivalently to three contacting points with the rods and become the minimum.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: December 24, 1996
    Assignees: Tokyo Electron Limited, Tokyo Electron Tohoku Limited
    Inventor: Tetsu Ohsawa
  • Patent number: 5567152
    Abstract: A heat processing apparatus for subjecting heat processing to a wafer by heating includes a reaction tube for containing the wafers, a heating element provided around the reaction tube, for heating an inside of the reaction tube, a plurality of heat radiating members provided concentrically around the heating element with an airtight space between the heating element and an innermost one of the heat radiating members and airtight spaces between the heat radiating members, and a pressure-reducing device for reducing the pressure of these airtight spaces. In this heat processing apparatus, the pressures of the airtight spaces are reduced by the pressure-reducing means at least when the temperature of the inside of the reaction tube is increased.
    Type: Grant
    Filed: April 11, 1995
    Date of Patent: October 22, 1996
    Assignee: Tokyo Electron Limited
    Inventor: Tamotsu Morimoto
  • Patent number: 5556275
    Abstract: A heat treatment apparatus comprising a holder, a hollow cylindrical cover, a flat plate, and a processing chamber. The holder holds disk-shaped objects, each having an orientation flat portion at circumference. The objects are arranged coaxially and spaced at predetermined intervals, with the orientation flat portions aligned with one another. The cover has gas ports and surrounds the objects held by the holder and is spaced from a circumference of each object by a predetermined distance. The flat plate is mounted on an inner surface of the cover and opposes the orientation flat portions of the objects. In the processing chamber, the objects held by the holder are processed by using a process gas.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: September 17, 1996
    Assignees: Tokyo Electron Limited, Tokyo Electron Tohoku Limited
    Inventors: Kazunari Sakata, Kenji Tago, Mitsuo Mizukami
  • Patent number: 5549473
    Abstract: The loader device comprises a cartridge-carrying carousel provided with a set of cartridge-holders in which sealed closed cartridges are mounted in removable manner, each cartridge being designed to contain a sample for processing in a space furnace, the device further comprising a control mechanism for imparting indexed rotary drive to the cartridge-holders. The carousel is mounted to one side of the furnace in such a manner that its axis of rotation is parallel to longitudinal axis of the furnace. Each cartridge-holder of the carousel co-operates with a transfer mechanism that includes a translation arm extending perpendicularly to the axis of rotation of the carousel to enable each cartridge to be brought successively into a working position in which the axis of the cartridge is in alignment with the longitudinal axis of the furnace. The control mechanism for imparting rotary drive to the cartridge-holders and the transfer mechanism are activated alternately by a single electric motor.
    Type: Grant
    Filed: May 10, 1995
    Date of Patent: August 27, 1996
    Assignee: Societe Europeenne de Propulsion
    Inventor: Dominique Valentian
  • Patent number: 5525057
    Abstract: A forced cooling apparatus for a heat treatment apparatus comprising a heat treatment furnace having a process tube with one end open at an furnace opening and another end closed at an furnace top portion; and a heater portion which covers the process tube, and wherein cooling of the heat treatment furnace is performed by forced cooling by flowing air into a gap formed between the heater portion and the process tube and which extends to the furnace top portion.
    Type: Grant
    Filed: August 9, 1994
    Date of Patent: June 11, 1996
    Assignee: Tokyo Electron Sagami Kabushiki Kaisha
    Inventor: Osamu Monoe
  • Patent number: 5516283
    Abstract: An apparatus for processing a plurality of circular wafers including a tubular heater, a boat and a plurality of heat transfer bodies. The tubular heater has a heating space inside and radiates heat within the heating space. The boat is loaded inside the heating space of the tubular heater and holds the wafers in parallel. Heat transfer bodies are located between the wafers.
    Type: Grant
    Filed: January 6, 1995
    Date of Patent: May 14, 1996
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Martin Schrems
  • Patent number: 5512320
    Abstract: A method for depositing sequential thin films on glass substrates by single substrate deposition comprising loading a batch of substrates into a load lock chamber and evacuating the chamber, transferring the substrates to a batch heating chamber for heating the substrates to elevated temperatures; transferring the glass substrates singly to one or more single substrate processing chambers, and sequentially transferring the substrates back to the load lock chamber where they are batch cooled.A vacuum system for carrying out the method includes a load lock/cooling chamber for evacuating a plurality of glass substrates; a heating chamber for heating a plurality of substrates to elevated temperatures; one or more single substrate processing chambers; and a transfer chamber having access to all of said chambers and having automated means therein for transferring the glass substrates into and out of said chambers in a preselected order.
    Type: Grant
    Filed: April 13, 1994
    Date of Patent: April 30, 1996
    Assignee: Applied Materials, Inc.
    Inventors: Norman L. Turner, John M. White
  • Patent number: 5505994
    Abstract: Fabric-handling equipment which removes a fabric web from a stack of such webs or from a supporting surface, dries ink printed on a fabric, and removes a porous fabric held onto a surface by a vacuum. To remove a fabric web from a surface, like a stack of such webs, a device places needles partially into the web. Since the needles extend into the fabric less than about nine tenths of the fabric's thickness, they can only attach to the upper surface of a single web. The needles, after insertion into the web, separate from each other to effectuate a firm connection. When the device raises, it can only lift a single web. When a fabric web receives printing, touching it with a heated block having a Teflon surface cures the ink. This permits its subsequent printing or collecting and stacking. A fabric web may adhere to a supporting surface through suction.
    Type: Grant
    Filed: March 16, 1994
    Date of Patent: April 9, 1996
    Assignee: QST Industries, Inc.
    Inventor: Warren N. Crawford
  • Patent number: RE36921
    Abstract: A manufacturing method and apparatus is provided for making building and other types of brick. The apparatus requires a minimum of excess (or surge) production, utilizes automated equipment which is highly dependable and which is easily operated and controlled. The apparatus comprises an automated low profile dryer and kiln in conjunction with an automated brick handling system including specially designed lighweight kiln cars.
    Type: Grant
    Filed: September 5, 1997
    Date of Patent: October 17, 2000
    Assignee: Swindell Dressler International Corporation
    Inventors: James D. Bushman, Marion A. Rogallo