Tungsten Compound Containing Coating (e.g., Tungsten Silicide, Etc.) Patents (Class 427/255.392)
  • Patent number: 10847411
    Abstract: Generally, the present disclosure provides example embodiments relating to conductive features, such as metal contacts, vias, lines, etc., and methods for forming those conductive features. In an embodiment, a structure includes a first dielectric layer over a substrate, a first conductive feature in the first dielectric layer, a second dielectric layer over the first dielectric layer, a second conductive feature in the second dielectric layer, and a blocking region disposed between the first conductive feature and the second conductive feature. The second conductive feature is disposed between and abutting a first sidewall of the second dielectric layer and a second sidewall of the second dielectric layer. The blocking region extends laterally at least from the first sidewall of the second dielectric layer to the second sidewall of the second dielectric layer.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: November 24, 2020
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Pin-Wen Chen, Chia-Han Lai, Mei-Hui Fu, Min-Hsiu Hung, Ya-Yi Cheng
  • Patent number: 9969622
    Abstract: Ternary tungsten boride nitride (WBN) thin films and related methods of formation are provided. The films are have excellent thermal stability, tunable resistivity and good adhesion to oxides. Methods of forming the films can involve thermal atomic layer deposition (ALD) processes in which boron-containing, nitrogen-containing and tungsten-containing reactants are sequentially pulsed into a reaction chamber to deposit the WBN films. In some embodiments, the processes include multiple cycles of boron-containing, nitrogen-containing and tungsten-containing reactant pulses, with each cycle including multiple boron-containing pulses.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: May 15, 2018
    Assignee: Lam Research Corporation
    Inventors: Wei Lei, Juwen Gao
  • Patent number: 8956510
    Abstract: The present invention relates generally to methods for producing metallic products comprising a substrate and a metallic, external coating. In preferred embodiments, the metallic products are jewelry articles.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: February 17, 2015
    Assignee: Frederick Goldman, Inc.
    Inventor: Andrew Derrig
  • Patent number: 8932437
    Abstract: The present invention relates generally to methods for producing a coated jewelry article or a coated component of a jewelry article, comprising a jewelry article or a component of a jewelry article, a first metallic coating, and a second metallic coating.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: January 13, 2015
    Assignee: Frederick Goldman, Inc.
    Inventor: Andrew Derrig
  • Publication number: 20120213945
    Abstract: Embodiments relate to using radicals to at different stages of deposition processes. The radicals may be generated by applying voltage across electrodes in a reactor remote from a substrate. The radicals are injected onto the substrate at different stages of molecular layer deposition (MLD), atomic layer deposition (ALD), and chemical vapor deposition (CVD) to improve characteristics of the deposited layer, enable depositing of material otherwise not feasible and/or increase the rate of deposition. Gas used for generating the radicals may include inert gas and other gases. The radicals may disassociate precursors, activate the surface of a deposited layer or cause cross-linking between deposited molecules.
    Type: Application
    Filed: February 15, 2012
    Publication date: August 23, 2012
    Applicant: SYNOS TECHNOLOGY, INC.
    Inventor: Sang In LEE
  • Publication number: 20110070371
    Abstract: Methods of forming a conductive fluorine-doped metal oxide layer on a substrate by chemical vapor deposition are described. The methods may include heating the substrate in a processing chamber, and introducing a metal-containing precursor and a fluorine-containing precursor to the processing chamber. The methods may also include adding an oxygen-containing precursor to the processing chamber. The precursors are reacted to deposit the fluorine-doped metal oxide layer on the substrate. Methods may also include forming the conductive fluorine-doped metal oxide layer by plasma-assisted chemical vapor deposition. These methods may include providing the substrate in a processing chamber, and introducing a metal-containing precursor, and a fluorine-containing precursor to the processing chamber. A plasma may be formed that includes species from the metal-containing precursor and the fluorine-containing precursor. The species may react to deposit the fluorine-doped metal oxide layer on the substrate.
    Type: Application
    Filed: September 17, 2010
    Publication date: March 24, 2011
    Applicants: Matheson Tri-Gas, Inc., Alliance for Sustainable Energy
    Inventors: Tim Gessert, Xiaonan Li, Teresa M. Barnes, Robert Torres, JR., Carrie L. Wyse
  • Patent number: 7858150
    Abstract: A method of making a coated article includes forming a layer including carbon on a glass substrate; and forming a layer (e.g., including tungsten disulfide) on the glass substrate over the carbon to prevent the layer comprising carbon from burning off upon exposure to air if taken to high temperatures. In certain embodiments, the amorphous carbon layer includes at least about 35% sp3 carbon-carbon bonds, more preferably at least about 70%, and most preferably at least about 80% of the sp3 carbon-carbon bonds.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: December 28, 2010
    Assignee: Guardian Industries Corp.
    Inventor: Vijayen S. Veerasamy
  • Patent number: 7732327
    Abstract: Embodiments of the invention provide an improved process for depositing tungsten-containing materials. The process utilizes soak processes and vapor deposition processes to provide tungsten films having significantly improved surface uniformity while increasing the production level throughput. In one embodiment, a method is provided which includes depositing a tungsten silicide layer on the substrate by exposing the substrate to a continuous flow of a silicon precursor while also exposing the substrate to intermittent pulses of a tungsten precursor. The method further provides that the substrate is exposed to the silicon and tungsten precursors which have a silicon/tungsten precursor flow rate ratio of greater than 1, for example, about 2, about 3, or greater. Subsequently, the method provides depositing a tungsten nitride layer on the tungsten suicide layer, depositing a tungsten nucleation layer on the tungsten nitride layer, and depositing a tungsten bulk layer on the tungsten nucleation layer.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: June 8, 2010
    Assignee: Applied Materials, Inc.
    Inventors: Sang-Hyeob Lee, Avgerinos V. Gelatos, Kai Wu, Amit Khandelwal, Ross Marshall, Emily Renuart, Wing-Cheong Gilbert Lai, Jing Lin
  • Publication number: 20090214786
    Abstract: A multi-station deposition apparatus capable of simultaneous processing multiple substrates using a plurality of stations, where a gas curtain separates the stations. The apparatus further comprises a multi-station platen that supports a plurality of wafers and rotates the wafers into specific deposition positions at which deposition gases are supplied to the wafers. The deposition gases may be supplied to the wafer through single zone or multi-zone gas dispensing nozzles.
    Type: Application
    Filed: May 5, 2009
    Publication date: August 27, 2009
    Inventors: Mei Chang, Lawrence C. Lei, Walter B. Glenn
  • Patent number: 6986914
    Abstract: The present methods provide tools for growing conformal metal thin films, including metal nitride, metal carbide and metal nitride carbide thin films. In particular, methods are provided for growing such films from aggressive chemicals. The amount of corrosive chemical compounds, such as hydrogen halides, is reduced during the deposition of transition metal, transition metal carbide, transition metal nitride and transition metal nitride carbide thin films on various surfaces, such as metals and oxides. Getter compounds protect surfaces sensitive to hydrogen halides and ammonium halides, such as aluminum, copper, silicon oxide and the layers being deposited, against corrosion. Nanolaminate structures incorporating metallic thin films, and methods for forming the same, are also disclosed.
    Type: Grant
    Filed: September 12, 2002
    Date of Patent: January 17, 2006
    Assignee: ASM International N.V.
    Inventors: Kai Elers, Wei-Min Li
  • Patent number: 6919102
    Abstract: A method of stabilizing the properties of a material layer is disclosed. A plurality of wafers are stored in a FOUP and in sequence the wafers are transferred to a chamber to proceed with deposition of a material layer and to the FOUP filled with a specific gas after deposition until all the wafers in the FOUP are treated. In the process of deposition, the wafers deposited with material layers on their surfaces are stored in the FOUP filled with specific gas. Therefore, the surface properties of all the wafers in the FOUP are stablilized and contamination due to outgassing is prevented.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: July 19, 2005
    Assignee: Powerchip Semiconductor Corp.
    Inventor: Ching-hua Chen
  • Patent number: 6884473
    Abstract: A method for fabricating a metal silicide layer includes forming a dielectric layer on a substrate, followed by forming a polysilicon material conductive layer on the dielectric layer. An adhesion layer is then formed on the conductive layer, wherein the adhesion layer is a nitrogen rich layer or a nitrogen ion implanted layer. A metal silicide layer is then formed on the adhesion layer. The adhesion between the metal silicide layer and the conductive layer is more desirable due the adhesion layer.
    Type: Grant
    Filed: December 24, 2002
    Date of Patent: April 26, 2005
    Assignee: Macronix International Co., Ltd.
    Inventor: Kent Kuohua Chang
  • Patent number: 6884466
    Abstract: Processes for producing tungsten nitride and tungsten nitride films are provided in which a tungsten carbonyl compound and a nitrogen-containing reactant gas are reacted at a temperature below about 600° C. Tungsten nitride precursors are also included which comprise a tungsten carbonyl compound capable of forming a tungsten nitride film in the presence of a nitrogen-containing reactant gas at a temperature of less than about 600° C.
    Type: Grant
    Filed: April 28, 2003
    Date of Patent: April 26, 2005
    Assignees: Gelest, Inc., The Research Foundation of State University of New York
    Inventors: Alain E. Kaloyeros, Barry C. Arkles
  • Patent number: 6846516
    Abstract: Embodiments of the present invention relate to an apparatus and method of cyclical deposition utilizing three or more precursors in which delivery of at least two of the precursors to a substrate structure at least partially overlap. One embodiment of depositing a ternary material layer over a substrate structure comprises providing at least one cycle of gases to deposit a ternary material layer. One cycle comprises introducing a pulse of a first precursor, introducing a pulse of a second precursor, and introducing a pulse of a third precursor in which the pulse of the second precursor and the pulse of the third precursor at least partially overlap. In one aspect, the ternary material layer includes, but is not limited to, tungsten boron silicon (WBxSiy), titanium silicon nitride (TiSixNy), tantalum silicon nitride (TaSixNy), silicon oxynitride (SiOxNy), and hafnium silicon oxide (HfSixOy).
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: January 25, 2005
    Assignee: Applied Materials, Inc.
    Inventors: Michael Xi Yang, Hyungsuk Alexander Yoon, Hui Zhang, Hongbin Fang, Ming Xi
  • Patent number: 6838125
    Abstract: A method for depositing a film on a substrate is provided. In one aspect, the method includes providing a metal-containing precursor to an activation zone, and activating the metal-containing precursor to form an activated precursor. The activated precursor gas is transported to a reaction chamber, and a film is deposited on the substrate using a cyclical deposition process, wherein the activated precursor gas and a reducing gas are alternately adsorbed on the substrate. Also provided is a method of depositing a film on a substrate using an activated reducing gas.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: January 4, 2005
    Assignee: Applied Materials, Inc.
    Inventors: Hua Chung, Ling Chen, Vincent W. Ku
  • Patent number: 6835417
    Abstract: The ALD process chamber has heating radiation sources and the process sequence includes rapid temperature changes on a substrate surface of a substrate arranged in the ALD process chamber. The temperature changes are controlled and the ALD and CVD processes are optimized by in situ temperature steps, for example in order to produce nanolaminates.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: December 28, 2004
    Assignee: Infineon Technologies AG
    Inventors: Annette Saenger, Bernhard Sell, Harald Seidl, Thomas Hecht, Martin Gutsche
  • Patent number: 6833161
    Abstract: A method for depositing a tungsten nitride layer is provided. The method includes a cyclical process of alternately adsorbing a tungsten-containing compound and a nitrogen-containing compound on a substrate. The barrier layer has a reduced resistivity, lower concentration of fluorine, and can be deposited at any desired thickness, such as less than 100 angstroms, to minimize the amount of barrier layer material.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: December 21, 2004
    Assignee: Applied Materials, Inc.
    Inventors: Shulin Wang, Ulrich Kroemer, Lee Luo, Aihua Chen, Ming Li
  • Patent number: 6797337
    Abstract: A method and apparatus for delivering precursors to a chemical vapor deposition or atomic layer deposition chamber is provided. The apparatus includes a temperature-controlled vessel containing a precursor. An energy source is used to vaporize the precursor at its surface such that substantially no thermal decomposition of the remaining precursor occurs. The energy source may include a carrier gas, a radio frequency coupling device, or an infrared irradiation source. After the precursor is exposed to the energy source, the vaporized portion of the precursor is transported via a temperature-controlled conduit to a chemical vapor deposition or atomic deposition chamber for further processing.
    Type: Grant
    Filed: August 19, 2002
    Date of Patent: September 28, 2004
    Assignee: Micron Technology, Inc.
    Inventors: Ross S. Dando, Craig M. Carpenter, Allen P. Mardian, Garo J. Derderian, Dan Gealy
  • Patent number: 6797340
    Abstract: A method for forming a tungsten layer on a substrate surface is provided. In one aspect, the method includes positioning the substrate surface in a processing chamber and exposing the substrate surface to a boride. A nucleation layer is then deposited on the substrate surface in the same processing chamber by alternately pulsing a tungsten-containing compound and a reducing gas selected from a group consisting of silane (SiH4), disilane (Si2H6), dichlorosilane (SiCl2H2), derivatives thereof, and combinations thereof. A tungsten bulk fill may then be deposited on the nucleation layer using cyclical deposition, chemical vapor deposition, or physical vapor deposition techniques.
    Type: Grant
    Filed: October 10, 2002
    Date of Patent: September 28, 2004
    Assignee: Applied Materials, Inc.
    Inventors: Hongbin Fang, Hyung-Suk A. Yoon, Ken Kaung Lai, Chi Chung Young, James Horng, Ming XI, Michael X. Yang, Hua Chung
  • Patent number: 6726955
    Abstract: A method of forming a polycrystalline silicon film comprising: providing a process gas mix comprising a silicon source gas and a dilution gas mix wherein the dilution gas mix comprises H2 and an inert gas; and forming a polycrystalline silicon film from said silicon source gas.
    Type: Grant
    Filed: June 27, 2000
    Date of Patent: April 27, 2004
    Assignee: Applied Materials, Inc.
    Inventors: Shulin Wang, Steven A. Chen, Lee Luo, Errol Sanchez
  • Patent number: 6660342
    Abstract: A method of forming a film by a plasma CVD process in which a high density plasma is generated in the presence of a magnetic field wherein the electric power for generating the plasma has a pulsed waveform. The electric power typically is supplied by microwave, and the pulsed wave may be a complex wave having a two-step peak, or may be a complex wave obtained by complexing a pulsed wave with a stationary continuous wave.
    Type: Grant
    Filed: August 10, 2000
    Date of Patent: December 9, 2003
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Akiharu Miyanaga, Tohru Inoue, Shunpei Yamazaki
  • Patent number: 6641867
    Abstract: In situ nitridation of a thin layer of either silicon or tungsten provides an adhesive layer for bulk deposition of tungsten. Alternatively, a thin layer of silicon can be deposited directly on a dielectric, then reacted with WF6 to replace the silicon with tungsten, which provides a nucleation layer for bulk tungsten deposition.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: November 4, 2003
    Assignee: Texas Instruments Incorporated
    Inventors: Wei-Yung Hsu, Jiong-Ping Lu, August J. Fischer, Ming-Jang Hwang
  • Publication number: 20030190424
    Abstract: A method for growing a thin tungsten silicide film on a hydrated substrate in a reaction space introduces a tungsten halide precursor, where the halide is not fluorine, into the reaction space to the hydrated substrate to create, for example, a chlorine terminated substrate surface and deposit tungsten without scavenging silicon. A silicon hydride precursor is then introduced into the reaction space to the chloride terminated substrate surface to create a hydride terminated substrate surface and deposit silicon. The two preceding steps are repeated an integral number of times to form a tungsten silicide film on the substrate, wherein a reaction by-product is a hydrogen halide.
    Type: Application
    Filed: October 19, 2001
    Publication date: October 9, 2003
    Inventor: Ofer Sneh
  • Patent number: 6623798
    Abstract: A chemical vapor deposition (CVD) method for depositing a suicide and a CVD system for performing the same are disclosed. A silicide is deposited on a substrate. Residual gases remaining from the depositing step are purged out by flowing air including H2O (g), to substantially remove fumes caused by the residual gases. In the purge step, the cycle purge is carried out at the conditions similar to the flow of atmosphere, to substantially remove the fumes.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: September 23, 2003
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ju-Cheol Shin, In-Sun Park, Young-Cheon Kim, Chul Whang-Bo, Hyeon-Deok Lee
  • Publication number: 20030175423
    Abstract: The ALD process chamber has heating radiation sources and the process sequence includes rapid temperature changes on a substrate surface of a substrate arranged in the ALD process chamber. The temperature changes are controlled and the ALD and CVD processes are optimized by in situ temperature steps, for example in order to produce nanolaminates.
    Type: Application
    Filed: February 27, 2003
    Publication date: September 18, 2003
    Inventors: Annette Saenger, Bernhard Sell, Harald Seidl, Thomas Hecht, Martin Gutsche
  • Publication number: 20030161952
    Abstract: A method for depositing a tungsten nitride layer is provided. The method includes a cyclical process of alternately adsorbing a tungsten-containing compound and a nitrogen-containing compound on a substrate. The barrier layer has a reduced resistivity, lower concentration of fluorine, and can be deposited at any desired thickness, such as less than 100 angstroms, to minimize the amount of barrier layer material.
    Type: Application
    Filed: February 26, 2002
    Publication date: August 28, 2003
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Shulin Wang, Ulrich Kroemer, Lee Luo, Aihua Chen, Ming Li
  • Patent number: 6582757
    Abstract: A method for forming tungsten structures over silicon substrates, including the following steps. A silicon substrate is having a patterned dielectric layer formed thereon defining a tungsten structure opening is provided. The silicon substrate is pre-heated to a temperature of from about 430 to 440° C. A Si-rich WSx layer is formed over the patterned dielectric layer, lining the tungsten structure opening. A WSix nucleation layer is formed over the Si-rich WSix layer. A tungsten bulk layer is formed over the WSix nucleation layer, filling the tungsten structure opening, whereby fluorine attack of the Si substrate is minimized.
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: June 24, 2003
    Assignee: ProMos Technologies, Inc.
    Inventor: Chun-Yao Yen
  • Publication number: 20030104126
    Abstract: A method for forming a tungsten layer on a substrate surface is provided. In one aspect, the method includes positioning the substrate surface in a processing chamber and exposing the substrate surface to a boride. A nucleation layer is then deposited on the substrate surface in the same processing chamber by alternately pulsing a tungsten-containing compound and a reducing gas selected from a group consisting of silane (SiH4), disilane (Si2H6), dichlorosilane (SiCl2H2), derivatives thereof, and combinations thereof. A tungsten bulk fill may then be deposited on the nucleation layer using cyclical deposition, chemical vapor deposition, or physical vapor deposition techniques.
    Type: Application
    Filed: October 10, 2002
    Publication date: June 5, 2003
    Inventors: Hongbin Fang, Hyung-Suk A. Yoon, Ken Kaung Lai, C.C. Young, James Horng, Ming Xi, Michael X. Yang, Hua Chung
  • Patent number: 6551929
    Abstract: A method and system to form a refractory metal layer on a substrate features a bifurcated deposition process that includes nucleating a substrate using ALD techniques to serially expose the substrate to first and second reactive gases followed forming a bulk layer, adjacent to the nucleating layer, using CVD techniques to concurrently exposing the nucleation layer to the first and second gases.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: April 22, 2003
    Assignee: Applied Materials, Inc.
    Inventors: Moris Kori, Alfred W. Mak, Jeong Soo Byun, Lawrence Chung-Lai Lei, Hua Chung, Ashok Sinha, Ming Xi
  • Publication number: 20020197403
    Abstract: A method for chemical vapor deposition of a TiSixNy film onto a substrate wherein x is greater than zero and no greater than about 5, and y is greater than zero and no greater than about 7, including introducing into a deposition chamber: (i) a substrate; (ii) a source precursor comprising titanium in a vapor state having the formula (I):
    Type: Application
    Filed: July 30, 2002
    Publication date: December 26, 2002
    Applicant: Gelest, Inc.
    Inventors: Barry C. Arkles, Alain E. Kaloyeros
  • Patent number: 6472323
    Abstract: A method for depositing tungsten nitride uses a source gas mixture having a silicon based gas for depositing the tungsten nitride to overlie a deposition substrate. A non-planar storage capacitor has a tungsten nitride capacitor electrode.
    Type: Grant
    Filed: March 28, 2000
    Date of Patent: October 29, 2002
    Assignee: Micron Technology, Inc.
    Inventors: Scott Meikle, Trung Doan
  • Patent number: 6472076
    Abstract: There is provided an array of alkyl substituted silsesquioxane thin film precursors having a structure wherein alkyl groups are bonded to the silicon atoms of a silsesquioxane cage. The alkyl groups may be the same as, or different than the other alkyl groups. In a first aspect, the present invention provides a composition comprising a vaporized material having the formula [R—SiO1.5]x[H—SiO1.5]y, wherein x+y=n, n is an integer between 2 and 30, x is an integer between 1 and n and y is a whole number between 0 and n. R is a C1 to C100 alkyl group. Also provided are films made from these precursors and objects comprising these films.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: October 29, 2002
    Assignee: Honeywell International Inc.
    Inventor: Nigel P. Hacker
  • Publication number: 20020086110
    Abstract: This invention relates to a method for tungsten chemical vapor deposition on a semiconductor substrate, comprising positioning said substrate within a deposition chamber, heating said substrate and depositing under low pressure the tungsten on the substrate by contacting the latter with a mixture of gases flowing through the deposition chamber comprising tungsten hexafluoride (WF6), hydrogen (H2) and at least one carrier gas. The mixture of gases comprises also silane (SiH4) with such a flow rate that the flow ratio WF6/SiH4 is from 2.5 to 6, the flow rate of WF6 being from 30 to 60 sccm, while the pressure in the deposition chamber is maintained from 0.13 to 5.33 kPa (1 and 40 Torr).
    Type: Application
    Filed: January 24, 2001
    Publication date: July 4, 2002
    Inventors: Hans Vercammen, Joris Baele
  • Publication number: 20020051847
    Abstract: 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 organo-metallic 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: Application
    Filed: October 28, 2001
    Publication date: May 2, 2002
    Inventor: Salman Akram
  • Publication number: 20020014205
    Abstract: A chemical vapor deposition (CVD) method for depositing a suicide and a CVD system for performing the same are disclosed. A silicide is deposited on a substrate. Residual gases remaining from the depositing step are purged out by flowing air including H2O (g), to substantially remove fumes caused by the residual gases. In the purge step, the cycle purge is carried out at the conditions similar to the flow of atmosphere, to substantially remove the fumes.
    Type: Application
    Filed: June 21, 2001
    Publication date: February 7, 2002
    Inventors: Ju-Cheol Shin, In-Sun Park, Young-Cheon Kim, Chul Whang-Bo, Hyeon-Deok Lee
  • Patent number: 6306765
    Abstract: A film formation method which comprises the steps of forming a high melting metal film on a substrate to cover an insulating pattern formed on the substrate therewith, and forming on the surface of the high melting metal film a high melting metal nitride film or a high melting oxide nitride film. The high melting metal film in the first step is formed by a chemical vapor deposition process, after which the high melting metal nitride or high melting metal oxide nitride film is continuously formed by the chemical vapor deposition process. During the CVD processes in the first and second steps, the substrate may be applied with an RF bias.
    Type: Grant
    Filed: July 29, 1994
    Date of Patent: October 23, 2001
    Assignee: Sony Corporation
    Inventor: Junichi Sato