Patents by Inventor Alfred Mak

Alfred Mak has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20060292874
    Abstract: In one embodiment, a method for forming a tungsten material on a substrate surface is provide which includes positioning a substrate within a deposition chamber, heating the substrate to a deposition temperature, and exposing the substrate sequentially to a first reducing gas and a tungsten precursor gas to form a tungsten nucleation layer on the substrate during an atomic layer deposition (ALD) process. The method may further provide exposing the substrate to a deposition gas comprising a second reducing gas and the tungsten precursor gas to form a tungsten bulk layer on the tungsten nucleation layer during a chemical vapor deposition (CVD) process. Examples include that the ALD and CVD processes are conducted in the same deposition chamber or in different deposition chambers.
    Type: Application
    Filed: August 29, 2006
    Publication date: December 28, 2006
    Inventors: Moris Kori, Alfred Mak, Jeong Byun, Lawrence Lei, Hua Chung, Ashok Sinha, Ming Xi
  • Publication number: 20060264031
    Abstract: In one embodiment, a method for forming a tungsten-containing material on a substrate is provided which includes forming a tungsten nucleation layer by sequentially exposing a substrate to a boron-containing gas and a tungsten-containing gas within a processing chamber during an atomic layer deposition process, and forming a tungsten bulk layer on the tungsten nucleation layer by exposing the substrate to a processing gas that contains the tungsten-containing gas and a reactive precursor gas within another processing chamber during a chemical vapor deposition process. In one example, the tungsten nucleation layer is deposited on a dielectric material, such as silicon oxide. In another example, the tungsten nucleation layer is deposited on a barrier material, such as titanium or titanium nitride. Other examples provide that the tungsten nucleation layer and the tungsten bulk layer are deposited in the same processing chamber.
    Type: Application
    Filed: August 2, 2006
    Publication date: November 23, 2006
    Inventors: Ming Xi, Ashok Sinha, Moris Kori, Alfred Mak, Xinliang Lu, Ken Lai, Karl Littau
  • Publication number: 20060223286
    Abstract: A method and apparatus for atomic layer deposition (ALD) is described. The apparatus comprises a deposition chamber and a wafer support. The deposition chamber is divided into two or more deposition regions that are integrally connected one to another. The wafer support is movable between the two or more interconnected deposition regions within the deposition chamber.
    Type: Application
    Filed: June 12, 2006
    Publication date: October 5, 2006
    Inventors: Barry Chin, Alfred Mak, Lawrence Lei, Ming Xi, Hua Chung, Ken Lai, Jeong Byun
  • Publication number: 20060128132
    Abstract: A method and system to reduce the resistance of refractory metal layers by controlling the presence of fluorine contained therein. The present invention is based upon the discovery that when employing ALD techniques to form refractory metal layers on a substrate, the carrier gas employed impacts the presence of fluorine in the resulting layer. As a result, the method features chemisorbing, onto the substrate, alternating monolayers of a first compound and a second compound, with the second compound having fluorine atoms associated therewith, with each of the first and second compounds being introduced into the processing chamber along with a carrier gas to control a quantity of the fluorine atoms associated with the monolayer of the second compound.
    Type: Application
    Filed: January 24, 2006
    Publication date: June 15, 2006
    Inventors: Ashok Sinha, Ming Xi, Moris Kori, Alfred Mak, Jeong Byun, Lawrence Lei, Hua Chung
  • Publication number: 20050287807
    Abstract: Methods for the deposition of tungsten films are provided. The methods include depositing a nucleation layer by alternatively adsorbing a tungsten precursor and a reducing gas on a substrate, and depositing a bulk layer of tungsten over the nucleation layer.
    Type: Application
    Filed: August 18, 2005
    Publication date: December 29, 2005
    Inventors: Ken Lai, Jeong Byun, Frederick Wu, Ramanujapuran Srinivas, Avgerinos Gelatos, Mei Chang, Moris Kori, Ashok Sinha, Hua Chung, Hongbin Fang, Alfred Mak, Michael Yang, Ming Xi
  • Publication number: 20050153564
    Abstract: Methods and apparatus for controlling the critical dimensions and monitoring the phase shift angles of photomasks. Critical dimensions measurement data before wafer processing and after wafer processing are collected by an integrated metrology tool to adjust the process recipe, to determine if the critical dimensions are in specification and to determine if additional etching is required. Phase shift angle and uniformity across substrate measurement after wafer processing are collected by an integrated metrology tool to determine if the phase shift angle and its uniformity are in specification. The real time process recipe adjustment and determination if additional etching is requires allow tightening of the process control. The phase shift angle and uniformity monitoring allows in-line screening of phase shift photomasks.
    Type: Application
    Filed: January 9, 2004
    Publication date: July 14, 2005
    Inventors: Alfred Mak, Yung-Hee Lee, Cynthia Brooks, Melisa Buie, Turgut Sahin, Jian Ding
  • Publication number: 20050139160
    Abstract: Embodiments of the present invention generally relate to a small volume chamber with a substrate support. One embodiment of a processing chamber includes a first assembly having a substrate support, a pumping ring disposed around a perimeter of the substrate receiving surface, and a gas distribution assembly disposed over the substrate support. The chamber may further include a gas distribution assembly disposed over the substrate support. The first assembly and the gas distribution assembly can be selectively positioned between an open position and a closed position.
    Type: Application
    Filed: February 16, 2005
    Publication date: June 30, 2005
    Inventors: Lawrence Lei, Alfred Mak, Gwo-Chuan Tzu, Avi Tepman, Ming Xi, Walter Glenn
  • Publication number: 20050133158
    Abstract: Method and apparatus for supporting a substrate in a semiconductor substrate processing system are provided. A substrate is supported on two substrate support each having an inclined surface for receiving a portion of the substrate while minimizing contact with the substrate and guides for centering the substrate on the inclined surface. In one aspect, the two substrate supports are position facing each other on a ring disposed in a loadlock chamber with the substrate supported therebetween. Multiple sets of the substrate supports may be used to hold multiple substrates at a time in the loadlock chamber.
    Type: Application
    Filed: December 19, 2003
    Publication date: June 23, 2005
    Inventors: Khiem Nguyen, Alfred Mak
  • Publication number: 20050133166
    Abstract: The present invention generally provides an improved pedestal for supporting a substrate. The pedestal has greatest application during a plasma etching process, such as for a quartz photomask, or “reticle.” The pedestal defines a body, and a substrate support base along an upper surface of the body. The substrate support base has an outer edge, and an intermediate substrate support ridge for receiving and supporting the substrate. At least a portion of the substrate support base outside of the intermediate substrate support ridge is fabricated from a dielectric material. The purpose is to couple greater RF power through the reticle in order to enhance the plasma etching process.
    Type: Application
    Filed: February 18, 2004
    Publication date: June 23, 2005
    Inventors: Peter Satitpunwaycha, Khiem Nguyen, Alfred Mak, Kenneth Collins, Turgut Sahin
  • Publication number: 20050118804
    Abstract: A method of forming a boride layer for integrated circuit fabrication is disclosed. In one embodiment, the boride layer is formed by chemisorbing monolayers of a boron-containing compound and one refractory metal compound onto a substrate. In an alternate embodiment, the boride layer has a composite structure. The composite boride layer structure comprises two or more refractory metals. The composite boride layer is formed by sequentially chemisorbing monolayers of a boron compound and two or more refractory metal compounds on a substrate.
    Type: Application
    Filed: November 19, 2004
    Publication date: June 2, 2005
    Inventors: Jeong Byun, Alfred Mak
  • Publication number: 20050082007
    Abstract: Method and apparatus for supporting and transferring a substrate in a semiconductor wafer processing system are provided. In one aspect, an apparatus is provided for supporting a substrate comprising-a cover ring comprising a base having a bore disposed therethough, the base having an upper surface and one or more raised surfaces disposed adjacent the bore, wherein the raised surface comprise one or more first substrate support members disposed adjacent an edge of the bore and a capture ring disposed on the cover ring, the capture ring comprising a semi-circular annular ring having an inner perimeter corresponding to the bore of the cover ring and one or more second substrate support members disposed on the inner perimeter and adapted to receive a substrate, wherein the capture ring is adapted to mate with the cover ring and form one contiguous raised surface on the cover ring.
    Type: Application
    Filed: October 21, 2003
    Publication date: April 21, 2005
    Inventors: Khiem Nguyen, Peter Satitpunwaycha, Alfred Mak
  • Publication number: 20050067103
    Abstract: A photomask etch chamber, which includes a substrate support member disposed inside the chamber. The substrate support member is configured to support a photomask substrate. The chamber further includes a ceiling disposed on the chamber and an endpoint detection system configured to detect a peripheral region of the photomask substrate.
    Type: Application
    Filed: September 26, 2003
    Publication date: March 31, 2005
    Inventors: Khiem Nguyen, Peter Satitpunwaycha, Alfred Mak
  • Patent number: 6872429
    Abstract: A layer of tungsten nitride is deposited on the upper surface of a wafer with improved adhesion. The deposition is performed by first pretreating the wafer with a hydrogen plasma prior to performing tungsten nitride deposition.
    Type: Grant
    Filed: April 27, 1998
    Date of Patent: March 29, 2005
    Assignee: Applied Materials, Inc.
    Inventors: Ling Chen, Seshadri Ganguli, Alfred Mak
  • Publication number: 20050059241
    Abstract: A method and system to reduce the resistance of refractory metal layers by controlling the presence of fluorine contained therein. The present invention is based upon the discovery that when employing ALD techniques to form refractory metal layers on a substrate, the carrier gas employed impacts the presence of fluorine in the resulting layer. As a result, the method features chemisorbing, onto the substrate, alternating monolayers of a first compound and a second compound, with the second compound having fluorine atoms associated therewith, with each of the first and second compounds being introduced into the processing chamber along with a carrier gas to control a quantity of the fluorine atoms associated with the monolayer of the second compound.
    Type: Application
    Filed: September 29, 2004
    Publication date: March 17, 2005
    Inventors: Moris Kori, Alfred Mak, Jeong Byun, Lawrence Lei, Hua Chung, Ashok Sinha, Ming Xi
  • Patent number: 6831004
    Abstract: A method of forming a boride layer for integrated circuit fabrication is disclosed. In one embodiment, the boride layer is formed by chemisorbing monolayers of a boron-containing compound and one refractory metal compound onto a substrate. In an alternate embodiment, the boride layer has a composite structure. The composite boride layer structure comprises two or more refractory metals. The composite boride layer is formed by sequentially chemisorbing monolayers of a boron compound and two or more refractory metal compounds on a substrate.
    Type: Grant
    Filed: March 13, 2003
    Date of Patent: December 14, 2004
    Assignee: Applied Materials, Inc.
    Inventors: Jeong Soo Byun, Alfred Mak
  • Publication number: 20040018723
    Abstract: A method of forming a boride layer for integrated circuit fabrication is disclosed. In one embodiment, the boride layer is formed by chemisorbing monolayers of a boron-containing compound and one refractory metal compound onto a substrate. In an alternate embodiment, the boride layer has a composite structure. The composite boride layer structure comprises two or more refractory metals. The composite boride layer is formed by sequentially chemisorbing monolayers of a boron compound and two or more refractory metal compounds on a substrate.
    Type: Application
    Filed: March 13, 2003
    Publication date: January 29, 2004
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Jeong Soo Byun, Alfred Mak
  • Publication number: 20030198754
    Abstract: Embodiments of this invention relate to a processing chamber and methods of distributing reactants therein to facilitate cyclical layer deposition of films on a substrate. One embodiment of a substrate processing chamber includes a chamber body and a substrate support disposed in the chamber body. A lid is disposed on the chamber body. An injection plate having a recess is mounted on the lid. A bottom surface of the recess has a plurality of apertures limited to an area proximate a central portion of the substrate receiving surface of the substrate support. Another embodiment of a substrate processing chamber includes a chamber body having interior sidewalls and an interior bottom wall. A top liner is disposed along the interior sidewalls of the chamber body. A bottom liner is disposed on the interior bottom wall of the chamber body. A gap is defined between the top liner and the bottom liner to allow a purge gas to be introduced therethrough.
    Type: Application
    Filed: November 21, 2002
    Publication date: October 23, 2003
    Inventors: Ming Xi, Alfred Mak, Joseph Yudovsky, Salvador P. Umotoy, David Santi
  • Patent number: 6620723
    Abstract: A method of forming a boride layer for integrated circuit fabrication is disclosed. In one embodiment, the boride layer is formed by chemisorbing monolayers of a boron containing compound and one refractory metal compound onto a substrate. In an alternate embodiment, the boride layer has a composite structure. The composite boride layer structure comprises two or more refractory metals. The composite boride layer is formed by sequentially chemisorbing monolayers of a boron compound and two or more refractory metal compounds on a substrate.
    Type: Grant
    Filed: June 27, 2000
    Date of Patent: September 16, 2003
    Assignee: Applied Materials, Inc.
    Inventors: Jeong Soo Byun, Alfred Mak
  • Publication number: 20030073304
    Abstract: A method and apparatus for forming a metal interconnect is provided. A tungsten plug is first deposited by selective WCVD within a feature having an aspect ratio of 3:1 or greater to at least partially fill the feature. An IMP barrier layer is next deposited over the tungsten plug. A PVD copper seed layer followed by an ECP copper layer is then deposited over the barrier layer to fill the feature. The tungsten plug has a thickness of about 1,000 to about 5,000 angstroms and fills less than about 50% of the volume of the feature.
    Type: Application
    Filed: October 16, 2001
    Publication date: April 17, 2003
    Applicant: Applied Materials, Inc.
    Inventors: Alfred Mak, Jeong Soo Byun, Moris Kori
  • Publication number: 20020086111
    Abstract: A method of forming a refractory metal nitride layer for integrated circuit fabrication is disclosed. In one embodiment, the refractory metal nitride layer is formed by chemisorbing monolayers of a hydrazine-based compound and one or more refractory metal compounds onto a substrate. In an alternate embodiment, the refractory metal nitride layer has a composite structure, which is composed of two or more refractory metals. The composite refractory metal nitride layer is formed by sequentially chemisorbing monolayers of a hydrazine-based compound and two or more refractory metal compounds on a substrate.
    Type: Application
    Filed: January 3, 2001
    Publication date: July 4, 2002
    Inventors: Jeong Soo Byun, Alfred Mak