Nitrogen Containing Coating (e.g., Metal Nitride, Etc.) Patents (Class 427/255.394)
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Patent number: 6338880Abstract: A process for depositing titanium nitride films containing less than 5% carbon impurities and less than 10% oxygen impurities by weight via chemical vapor deposition is disclosed. Sheet resistance of the deposited films is generally be within a range of about 1 to 10 ohms per square. The deposition process takes place in a deposition chamber that has been evacuated to less than atmospheric pressure and utilizes the organometallic compound tertiary-butyltris-dimethylamido-titanium and a nitrogen source as precursors. The deposition temperature, which is dependent on the nitrogen source, is within a range of 350° C. to 700° C. The low end of the temperature range utilizes nitrogen-containing gases such as diatomic nitrogen, ammonia, hydrazine, amides and amines which have been converted to a plasma. The higher end of the temperature range relies on thermal decomposition of the nitrogen source for the production of reaction-sustaining radicals.Type: GrantFiled: September 4, 1998Date of Patent: January 15, 2002Assignee: Micron Technology, Inc.Inventor: Salman Akram
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Patent number: 6337035Abstract: A phosphor is prepared by depositing a compound semiconductor of Groups III-V in the form of fine particles or a thin film on a surface of a carrier particle by hetero-epitaxial growth. Thus, the phosphor increased in quality is obtained with satisfactory reproducibility.Type: GrantFiled: February 19, 1999Date of Patent: January 8, 2002Assignee: Futaba Denshi Kogyo K.K.Inventors: Shigeo Itoh, Hitoshi Toki
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Publication number: 20020000199Abstract: A technique for forming a tungsten nitride film having a high growth speed without causing any dusting.Type: ApplicationFiled: July 26, 2001Publication date: January 3, 2002Inventor: Masamichi Harada
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Patent number: 6331332Abstract: In accordance with the present invention, there is provided a process for depositing diamond-like carbon (DLC) films by cathodic arc evaporation (CAE), wherein the high energy of CAE metal ions causes the cracking reaction of the hydrocarbon gases fed into the vacuum reaction chamber and then results in the deposition of DLC films having high hardness and lubrication. Due to the metallic constituents doped in the DLC films, the films also have good toughness. Moreover, prior to the feeding of hydrocarbon gases for the DLC deposition, the same metal arc source may deposits one or more interlayers of metal, metal nitride, or metal carbide on the substrate so as to further enhance the adhesion of the DLC films to be deposited.Type: GrantFiled: November 5, 1999Date of Patent: December 18, 2001Inventor: Da-Yung Wang
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Patent number: 6329540Abstract: A volatile organogallium compound of formula(I), an azidodialkylgallium complexed with a hydrazine derivative, can form a GaN film having no nitrogen defects by a metal organic chemical vapor deposition(MOCVD): R1R2(N3)Ga.(R3HNNR4H) (I) wherein, R1 and R2 are each independently C1-5 alkyl; and R3 and R4 are each independently hydrogen or C1-5 alkyl.Type: GrantFiled: June 15, 2000Date of Patent: December 11, 2001Assignee: Korea Research Institute of Chemical TechnologyInventors: Yun-soo Kim, Chang-Gyoun Kim, Seung-Ho Yu
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Publication number: 20010048973Abstract: The present invention provides a chemical vapor deposition using, as feed gases, a silicon compound and hydrazine or a derivative thereof, or a compound containing both silicon and nitrogen, and a process and a system useful for chemical vapor deposition growth, in which a chlorinated silane compound and ammonia, feed gases, are preliminarily reacted with each other, and the resulting reaction gas mixture from which the ammonium halide produced by the preliminary reaction has been eliminated is fed to form a thin film on a substrate.Type: ApplicationFiled: June 25, 1999Publication date: December 6, 2001Inventors: YUUSUKE SATO, TAKASHI KATAOKA, NAOKI TAMAOKI, TOSHIMITSU OHMINE
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Patent number: 6323119Abstract: The present invention provides a method of depositing an amorphous fluorocarbon film using a high bias power applied to the substrate on which the material is deposited. The invention contemplates flowing a carbon precursor at rate and at a power level so that equal same molar ratios of a carbon source is available to bind the fragmented fluorine in the film thereby improving film quality while also enabling improved gap fill performance. The invention further provides for improved adhesion of the amorphous fluorocarbon film to metal surfaces by first depositing a metal or TiN adhesion layer on the metal surfaces and then stuffing the surface of the deposited adhesion layer with nitrogen. Adhesion is further improved by coating the chamber walls with silicon nitride or silicon oxynitride.Type: GrantFiled: October 10, 1997Date of Patent: November 27, 2001Assignee: Applied Materials, Inc.Inventors: Ming Xi, Turgut Sahin, Yaxin Wang
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Patent number: 6319567Abstract: A method for producing a tantalum nitride layer on a substrate, comprising; directly injecting a liquid mixture of (R1R2N)3Ta(═NR3) and (R4R5N)3Ta[&eegr;2—R6N═C (R7)(R8)] into a dispersing zone followed by delivering the dispersed mixture into a reactor containing the substrate at elevated temperature and reacting the mixture with a source of nitrogen selected from the group consisting of ammonia, alkyl amines, N2H2, alkyl hydrazine, N2 and mixtures thereof, to produce the tantalum nitride layer on the substrate, where R1, R2, R3, R4, R5, R6, R7 and R8 are individually C1-6 alkyl, aryl or hydrogen.Type: GrantFiled: March 30, 1999Date of Patent: November 20, 2001Assignee: Air Products and Chemicals, Inc.Inventors: Yoshihide Senzaki, Arthur Kenneth Hochberg, John Anthony Thomas Norman
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Patent number: 6312761Abstract: A tungsten nitride film, having a high growth speed without causing any dusting, is formed. The film forming apparatus 2, according to the present invention, includes an adhesion preventive container 8 which is placed in a reactor 11; and an object on which a film is to be formed 20 is located in the adhesion preventive container 8. In a first gas inlet equipment, a first feedstock gas is jetted from a shower nozzle 12. In a second gas inlet equipment, a second feedstock gas is jetted around the object on which a film is to be formed 20 between the shower nozzle 12 and the material 20. The first feedstock gas and the second feedstock gas attain the surface of the object on which a film is to be formed without being mixed together, which enables the efficient performance of the reaction. Since the adhesion preventive container is heated to 150 to 250° C., neither WF6.4NH3 nor WxN is formed and thus, no dusting is caused.Type: GrantFiled: January 21, 2000Date of Patent: November 6, 2001Assignee: Ulvac, Inc.Inventor: Masamichi Harada
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Patent number: 6274196Abstract: A spherical object transport apparatus of the invention brings a spiral stream into contact with a first atmosphere containing a spherical object, selectively sucks the first atmosphere outward so as to engulf in the spiral stream for diffusing the first atmosphere outward, guides the spherical object so that the spherical object passes through the center of the transport apparatus, supplies a second atmosphere to the spherical object, and sends the spherical object together with the second atmosphere to the following step.Type: GrantFiled: August 4, 2000Date of Patent: August 14, 2001Assignees: Mitsui High-Tec INC, Nippon Pneumatics/Fluidics System Co., Ltd.Inventors: Katsumi Amano, Tashiro Arai
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Patent number: 6270859Abstract: A method of depositing titanium nitride by chemical vapor deposition in a chamber having several design features directed to the conductive nature of titanium nitride, particularly when a plasma treatment step is performed after the thermal deposition of the film. Preferably, during the post-deposition plasma treatment, RF power is applied only to the showerhead counter-electrode and none to the pedestal supporting the wafer, thereby preventing charging of the wafer.Type: GrantFiled: March 27, 1998Date of Patent: August 7, 2001Assignee: Applied Materials, Inc.Inventors: Jun Zhao, Ashok Sinha, Avi Tepman, Mei Chang, Lee Luo, Alex Schreiber, Talex Sajoto, Stefan Wolff, Charles Dornfest, Michal Danek
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Publication number: 20010004478Abstract: A method of depositing titanium nitride by chemical vapor deposition in a chamber having several design features directed to the conductive nature of titanium nitride, particularly when a plasma treatment step is performed after the thermal deposition of the film. Preferably, during the post-deposition plasma treatment, RF power is applied only to the showerhead counter-electrode and none to the pedestal supporting the wafer, thereby preventing charging of the wafer.Type: ApplicationFiled: March 27, 1998Publication date: June 21, 2001Inventors: JUN ZHAO, ASHOK SINHA, AVI TEPMAN, MEI CHANG, LEE LUO, ALEX SCHREIBER, TALEX SAJOTO, STEFAN WOLFF, CHARLES DORNFEST, MICHAL DANEK
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Publication number: 20010003015Abstract: Method for passivating a layer of titanium that has been deposited on a substrate in a reaction chamber to coat the titanium thereby reducing the likelihood of contamination by byproducts of the deposition process or ambient oxygen or similar reactants. The method includes adding a flow of hydrogen and a flow of nitrogen to the chamber. The flows of hydrogen and nitrogen are approximately 800 sccm and continue for approximately 10-30 seconds respectively. The method may further comprise the step of forming a nitrogen plasma in the chamber for approximately 10 seconds wherein such case the flows of hydrogen and nitrogen continue for approximately 8 seconds respectively. The plasma is formed by applying RF power to an electrode located within said chamber or by a remote plasma source and channeled to said reactor chamber. Alternately, the passivation layer may be formed just by using a nitrogen plama alone for approximately 10-30 seconds at the same RF power level.Type: ApplicationFiled: October 29, 1998Publication date: June 7, 2001Inventors: MEI CHANG, RAMANUJAPURAM SRINIVAS, LI WU
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Patent number: 6242045Abstract: Metal nitrides are prepared by reacting a metal halide with an amine at an elevated temperature. The process is useful for depositing titanium nitride and vanadium nitride films onto glass, to make solar control automotive and architectural glazings.Type: GrantFiled: June 24, 1993Date of Patent: June 5, 2001Assignee: Visteon Global Technologies, Inc.Inventors: James William Proscia, Keith Brian Williams, Gene P. Reck
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Patent number: 6239040Abstract: A method of coating an amorphous silicon layer. An amorphous silicon layer is directly deposited on the polysilicon nodes by a self-aligned method. A chemical mechanical polishing process is performed to control the thickness of the amorphous silicon layer. No additional photoresist is used during the whole processes. Therefore, the duration for deposition can be reduced and the quality of the amorphous silicon film is improved.Type: GrantFiled: October 30, 1998Date of Patent: May 29, 2001Assignee: United Microelectronics Corp.Inventor: Shih-Ching Chen
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Patent number: 6238734Abstract: The present invention is a composition for deposition of a mixed metal or metal compound layer, comprising a solventless mixture of at least two metal-ligand complex precursors, wherein the mixture is liquid at ambient conditions and the ligands are the same and are selected from the group consisting of alkyls, alkoxides, halides, hydrides, amides, imides, azides cyclopentadienyls, carbonyls, and their fluorine, oxygen and nitrogen substituted analogs.Type: GrantFiled: July 8, 1999Date of Patent: May 29, 2001Assignee: Air Products and Chemicals, Inc.Inventors: Yoshihide Senzaki, David Allen Roberts, John Anthony Thomas Norman
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Patent number: 6238739Abstract: A method for forming a Ti1-xAlxN coating on a part without plasma enhancement, wherein a chemical vapor deposition chamber is heated to 250-500° C.; the part to be coated is heated to 550-650° C. and placed in said chamber; and a mixture of titanium and aluminium chlorides, NH3 and H2 is injected into the chamber. The molar amount of NH3 is greater than the molar amount of chlorides, and the molar amount of hydrogen is over five times greater than the molar amount of chlorides.Type: GrantFiled: February 2, 1999Date of Patent: May 29, 2001Assignee: Centre National de la Recherche ScientifiqueInventors: Roland Madar, Alain Rouault, Elisabeth Blanquet, Claude Bernard, Anne-Marie Dutron
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Patent number: 6238737Abstract: A method of treating structures (and the structure formed thereby), so as to prevent or retard the oxidation of a metal film, and/or prevent its delamination a substrate, includes providing a structure including a refractory metal film formed on a substrate, placing the structure into a vessel having a base pressure below approximately 10−7 torr, exposing the structure to a silane gas at a sufficiently high predetermined temperature and predetermined pressure to cause formation of a metal silicide layer on the refractory metal film, and exposing the structure to a second gas at a sufficiently high temperature and pressure to nitride the metal silicide layer into a nitrided layer.Type: GrantFiled: June 22, 1999Date of Patent: May 29, 2001Assignee: International Business Machines CorporationInventors: Kevin K. Chan, Erin C. Jones, Fenton R. McFeely, Paul M. Solomon, John J. Yurkas
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Patent number: 6210745Abstract: A residual gas analyzer can be used as a deposition rate monitor. A deposition rate monitor is based on the detection of growth precursors and reaction byproducts of the thin film growth in deposition equipment such as chemical vapor deposition (CVD) systems. The growth precursors and byproducts are identified and quantified by using a residual gas analyzer (RGA). The ion current from gas species associated with the growth rate is then empirically correlated with the thickness of the film. The specific chemical species detected by the RGA is unique to the material that is deposited and to the technique in which the material is deposited.Type: GrantFiled: July 8, 1999Date of Patent: April 3, 2001Assignee: National Semiconductor CorporationInventors: Kevin Gaughan, Ching-Wei Chen, Minxu Li
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Patent number: 6204204Abstract: A method and apparatus are disclosed for depositing a tantalum-containing diffusion barrier, such as a TaN barrier layer, by dissolving a tantalum-bearing organometallic precursor, such as PEMAT or PDEAT, in an inert, low viscosity, high molecular weight, low volatility solvent, such as octane, heptane, decane or toluene. The precursor-solvent solution is vaporized and flowed over a substrate to deposit the barrier. The precursor solution has a viscosity substantially similar to that of the solvent by maintaining the ratio of precursor to solvent at a generally low value, such as approximately 10% precursor. The boiling point of the solvent is substantially similar to the boiling point of the precursor, such as within 50% of the precursor boiling point at one atmosphere, to enhance repeatability of barrier film quality.Type: GrantFiled: April 1, 1999Date of Patent: March 20, 2001Assignee: CVC Products, Inc.Inventors: Ajit P. Paranjpe, Mehrdad M. Moslehi, Randhir S. Bubber, Lino A. Velo
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Patent number: 6200649Abstract: A method of forming titanium boronitride coatings using ion beam assisted deposition. The method involves exposing the substrate to a vacuum, depositing titanium onto the substrate, substantially simultaneously exposing the substrate to a source comprising boron and nitrogen, and substantially simultaneously bombarding the substrate with an energetic beam of ions under conditions effective to form a quantity of titanium-boron bonds and a quantity of titanium-nitrogen bonds effective to produce a titanium boronitride coating having a hardness of at least about 5000 kg/mm2.Type: GrantFiled: July 21, 1999Date of Patent: March 13, 2001Assignee: Southwest Research InstituteInventor: Geoffrey Dearnaley
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Patent number: 6196936Abstract: A golf club component is coated with a corrosion-resistant, wear-resistant, impact-resistant material, such as zirconium nitride, titanium nitride, di-titanium nitride, titanium aluminum nitride, titanium carbonitride, titanium zirconium nitride, or titanium aluminum carbonitride. Deposition is preferably accomplished by a cathodic arc process using linear deposition sources with simultaneous heating and rotation of the golf club component substrate relative to the deposition sources.Type: GrantFiled: July 25, 1997Date of Patent: March 6, 2001Assignee: Molecular Metallurgy, Inc.Inventor: Nathan K. Meckel
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Patent number: 6190732Abstract: A method and system for fabricating a device on a substrate with a process gas, such as with chemical vapor deposition. A reaction chamber and support chuck cooperate to form a low conductance configuration for axisymetric process gas flow over the substrate and to form a high conductance configuration for enhanced evacuation of residual process gas from the reaction chamber upon completion of the process. A dual conductance chuck has an indented region that aligns with the exhaust port of the reaction chamber to restrict process gas flow in the low conductance configuration, and that moves distal a showerhead and the exhaust port to provide reduced restriction of process gas flow for reaction chamber evacuation. The chuck includes thermal control for enhancing film deposition on the substrate and for reducing residual film deposition on the chuck. An evacuation opening in the housing provides independent evacuation of residual gas from the housing.Type: GrantFiled: September 3, 1998Date of Patent: February 20, 2001Assignee: CVC Products, Inc.Inventors: Thomas R. Omstead, Panya Wongsenakhum, William J. Messner, Edward J. Nagy, William Starks, Mehrdad M. Moslehi
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Patent number: 6177149Abstract: A Ti film is formed by CVD in holes formed in an insulating film formed on a Si substrate or on a Si film formed on a Si substrate by a method comprising the steps of: loading a Si substrate into a film forming chamber; evacuating the chamber at a predetermined vacuum; supplying TiCl4 gas, H2 gas, Ar gas and SiH4 gas into the film forming chamber; and producing a plasma in the film forming chamber to deposit a Ti film in the holes formed in the insulating film. The Si substrate is heated at 550° C. or above during the deposition of the Ti film, and the flow rates of the processing gases are regulated so that Si-to-insulator selectivity is not less than one. This method enables formation of a Ti film on a Si base at positions of holes in an insulating layer, with a good morphology of the interface between the Si base and the Ti film and with a good step coverage.Type: GrantFiled: December 21, 1998Date of Patent: January 23, 2001Assignee: Tokyo Electron LimitedInventors: Kunihiro Tada, Hayashi Otsuki
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Patent number: 6177145Abstract: The invention includes a semiconductor processing method of making electrical contact to a node. An insulating layer is formed over a substrate, and an opening is formed through the insulating layer to the substrate. A layer of electrically conductive material is formed within the opening. The electrically conductive material is capable of absorbing oxygen when exposed to an oxygen containing ambient. The conductive material is exposed to a plasma to densify at least an outermost exposed portion of the conductive material and reduce a capability of the layer to absorb oxygen when exposed to the oxygen containing ambient. The layer of electrically conductive material is not exposed to the oxygen containing ambient before being exposed to the plasma.Type: GrantFiled: June 8, 1998Date of Patent: January 23, 2001Assignee: Micron Technology, Inc.Inventors: Garo J. Derderian, Gurtej S. Sandhu
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Patent number: 6171650Abstract: A phosphor particle has thereon a moisture resistant treatment of a metallic nitride. By moisture resistant is meant a condition allowing the phosphor particle to function in a humid atmosphere for a significantly longer period of time than an untreated particle. The method of making such phosphors comprises the steps of introducing an inert gas into a reaction vessel; charging phosphor particles into the reaction vessel; heating the reaction vessel to a reaction temperature; introducing a nitride coating precursor into the reaction vessel in a manner to avoid restrictive reactions; introducing a co-reactant into the reaction vessel; and maintaining the inert gas flow, co-reactant flow and precursor supply for a time sufficient to moisture-proof the phosphor particles.Type: GrantFiled: September 28, 1999Date of Patent: January 9, 2001Assignee: Osram Sylvania Inc.Inventors: Richard G. W. Gingerich, Chen-Wen Fan
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Patent number: 6168833Abstract: A process for coating an object with ceramic material vaporized from an ingot of the ceramic material. The process comprises the steps of (a) evaporating the material by melting the surface of the ingot with an intense heat source; and (b) depositing the evaporated material upon the object as a coating. The ingot comprises an unsintered mixture of at least two powder fractions of at least 50% to 90% by volume of a coarse-grained powder and 10% to 50% by volume of a fine-grained powder. The average particle diameter, d50, of the fine-grained powder is at most one third the average particle diameter of the coarse-grained powder.Type: GrantFiled: February 16, 1999Date of Patent: January 2, 2001Assignee: DLR Deutsche Forschungsanstalt f{umlaut over (u)}r Luft-und Raumfahrt e.V.Inventors: Uwe Leushake, Walter Luxem, Claus-J{umlaut over (u)}rgen Kröder, Wolf-D. Zimmermann