Patents by Inventor Steven Lai

Steven Lai 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).

  • Patent number: 8656833
    Abstract: A leveling machine for rolled-up tablets has a base, a mounting frame and a wheel-leveling device. The base has two sideboards faced each other and each sideboard has a spindle hole. The mounting frame is rotatably mounted in the base between the sideboards and has a spindle, an adjusting motor, two mounting boards and a bottom cylinder. The spindle is rotatably mounted in the spindle holes of the sideboards. The adjusting motor is mounted securely on the corresponding sideboard to drive the spindle. The mounting boards are respectively, obliquely and securely mounted around the spindle near the sideboards. The bottom cylinder is rotatably mounted around the spindle between the mounting boards. The wheel-leveling device is connected to the mounting frame and has two top cylinder mounts, a cylinder, a top cylinder, two pushing mounts and two telescopic drivers.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: February 25, 2014
    Inventor: Steven Lai
  • Patent number: 8617348
    Abstract: Etching of nitride and oxide layers with reactant gases is modulated by etching in different process regimes. High etch selectivity to silicon nitride is achieved in an adsorption regime where the partial pressure of the etchant is lower than its vapor pressure. Low etch selectivity to silicon nitride is achieved in a condensation regime where the partial pressure of the etchant is higher than its vapor pressure. By controlling partial pressure of the etchant, very high etch selectivity to silicon nitride may be achieved.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: December 31, 2013
    Assignee: Novellus Systems, Inc.
    Inventors: Xinye Liu, Chiukin Steven Lai
  • Publication number: 20130074713
    Abstract: A leveling machine for rolled-up tablets has a base, a mounting frame and a wheel-leveling device. The base has two sideboards faced each other and each sideboard has a spindle hole. The mounting frame is rotatably mounted in the base between the sideboards and has a spindle, an adjusting motor, two mounting boards and a bottom cylinder. The spindle is rotatably mounted in the spindle holes of the sideboards. The adjusting motor is mounted securely on the corresponding sideboard to drive the spindle. The mounting boards are respectively, obliquely and securely mounted around the spindle near the sideboards. The bottom cylinder is rotatably mounted around the spindle between the mounting boards. The wheel-leveling device is connected to the mounting frame and has two top cylinder mounts, a cylinder, a top cylinder, two pushing mounts and two telescopic drivers.
    Type: Application
    Filed: September 22, 2011
    Publication date: March 28, 2013
    Inventor: Steven LAI
  • Publication number: 20130072366
    Abstract: A coil-tube chunk for a roll feeder has at least one colleting device. Each of the at least one colleting device has a base and a chunk. The base has a mounting stand, a sharp-tooth mount and multiple screwing rods. The mounting stand is formed on and protrudes from the base. The sharp-tooth mount is formed on the base around the mounting stand. The screwing rods are respectively and securely mounted on the sharp-tooth mount. The chunk is mounted securely on the base and has a guiding face, multiple grooves and multiple engaging teeth. The guiding face is aslantly formed on an external surface of the chunk. The grooves are formed in the external surface and the guiding frace of the chunk at intervals. The engaging teeth are formed on the external surface and the guiding face of the chunk between the grooves.
    Type: Application
    Filed: September 18, 2011
    Publication date: March 21, 2013
    Inventor: Steven Lai
  • Publication number: 20120244704
    Abstract: A method for removing native oxides from a substrate surface is provided. In one embodiment, the method comprises positioning a substrate having an oxide layer into a processing chamber, exposing the substrate to a gas mixture while forming a volatile film on the substrate and maintaining the substrate at a temperature below 65° C., heating the substrate to a temperature of at least about 75° C. to sublimate the volatile film and remove the oxide layer, and depositing a first layer on the substrate after heating the substrate.
    Type: Application
    Filed: June 5, 2012
    Publication date: September 27, 2012
    Inventors: Chien-Teh KAO, Jing-Pei(Connie) CHOU, Chiukin(Steven) LAI, Sal UMOTOY, Joel M. HUSTON, Son TRINH, Mei CHANG, Xiaoxiong (John) YUAN, Yu CHANG, Xinliang LU, Wei W. WANG, See-Eng PHAN
  • Patent number: 8187486
    Abstract: Etching of nitride and oxide layers with reactant gases is modulated by etching in different process regimes. High etch selectivity to silicon nitride is achieved in an adsorption regime where the partial pressure of the etchant is lower than its vapor pressure. Low etch selectivity to silicon nitride is achieved in a condensation regime where the partial pressure of the etchant is higher than its vapor pressure. By controlling partial pressure of the etchant, very high etch selectivity to silicon nitride may be achieved.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: May 29, 2012
    Assignee: Novellus Systems, Inc.
    Inventors: Xinye Liu, Chiukin Steven Lai
  • Publication number: 20110223755
    Abstract: A method for removing native oxides from a substrate surface is provided. In one embodiment, the method comprises positioning a substrate having an oxide layer into a processing chamber, generating a plasma of a reactive species from a gas mixture within the processing chamber, exposing the substrate to the reactive species while forming a volatile film on the substrate and maintaining the substrate at a temperature below 65° C., heating the substrate to a temperature of at least about 75° C. to vaporize the volatile film and remove the oxide layer, and depositing a first layer on the substrate after heating the substrate.
    Type: Application
    Filed: May 20, 2011
    Publication date: September 15, 2011
    Inventors: CHIEN-TEH KAO, Jing-Pei(Connie) Chou, Chiukin(Steven) Lai, Sal Umotoy, Joel M. Huston, Son Trinh, Mei Chang, Xiaoxiong (John) Yuan, Yu Chang, Xinliang Lu, Wei W. Wang, See-Eng Phan
  • Patent number: 7977249
    Abstract: Methods for removing silicon nitride and elemental silicon during contact preclean process involve converting these materials to materials that are more readily etched by fluoride-based etching methods, and subsequently removing the converted materials by a fluoride-based etch. Specifically, silicon nitride and elemental silicon may be treated with an oxidizing agent, e.g., with an oxygen-containing gas in a plasma, or with O2 or O3 in the absence of plasma to produce a material that is more rich in Si—O bonds and is more easily etched with a fluoride-based etch. Alternatively, silicon nitride or elemental silicon may be doped with a number of doping elements, e.g., hydrogen, to form materials which are more easily etched by fluoride based etches. The methods are particularly useful for pre-cleaning contact vias residing in a layer of silicon oxide based material because they minimize the unwanted increase of critical dimension of contact vias.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: July 12, 2011
    Assignee: Novellus Systems, Inc.
    Inventors: Xinye Liu, Yu Yang, Chiukin Steven Lai
  • Patent number: 7767024
    Abstract: In one embodiment, a method for removing native oxides from a substrate surface is provided which includes supporting a substrate containing silicon oxide within a processing chamber, generating a plasma of reactive species from a gas mixture within the processing chamber, cooling the substrate to a first temperature of less than about 65° C. within the processing chamber, and directing the reactive species to the cooled substrate to react with the silicon oxide thereon while forming a film on the substrate. The film usually contains ammonium hexafluorosilicate. The method further provides positioning the substrate in close proximity to a gas distribution plate, and heating the substrate to a second temperature of about 100° C. or greater within the processing chamber to sublimate or remove the film. The gas mixture may contain ammonia, nitrogen trifluoride, and a carrier gas.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: August 3, 2010
    Assignee: Appplied Materials, Inc.
    Inventors: Chien-Teh Kao, Jing-Pei (Connie) Chou, Chiukin (Steven) Lai, Sal Umotoy, Joel M. Huston, Son Trinh, Mei Chang, Xiaoxiong (John) Yuan, Yu Chang, Xinliang Lu, Wei W. Wang, See-Eng Phan
  • Patent number: 7604708
    Abstract: A substrate cleaning apparatus has a remote source to remotely energize a hydrogen-containing gas to form an energized gas having a first ratio of ionic hydrogen-containing species to radical hydrogen-containing species. The apparatus has a process chamber with a substrate support, an ion filter to filter the remotely energized gas to form a filtered energized gas having a second ratio of ionic hydrogen-containing species to radical hydrogen-containing species, the second ratio being different than the first ratio, and a gas distributor to introduce the filtered energized gas into the chamber.
    Type: Grant
    Filed: February 12, 2004
    Date of Patent: October 20, 2009
    Assignee: Applied Materials, Inc.
    Inventors: Bingxi Sun Wood, Mark N. Kawaguchi, James S. Papanu, Roderick C. Mosely, Chiukun Steven Lai, Chien-Teh Kao, Hua Ai, Wei W. Wang
  • Publication number: 20090111280
    Abstract: A method for removing native oxides from a substrate surface is provided. In one embodiment, the method comprises positioning a substrate having an oxide layer into a processing chamber, generating a plasma of a reactive species from a gas mixture within the processing chamber, exposing the substrate to the reactive species while forming a volatile film on the substrate and maintaining the substrate at a temperature below 65° C., heating the substrate to a temperature of at least about 75° C. to vaporize the volatile film and remove the oxide layer, and depositing a first layer on the substrate after heating the substrate.
    Type: Application
    Filed: December 4, 2008
    Publication date: April 30, 2009
    Applicant: APPLIED MATERIALS, INC.
    Inventors: Chien-Teh Kao, Jing-Pei (Connie) Chou, Chiukin (Steven) Lai, Sal Umotoy, Joel M. Huston, Son Trinh, Mei Chang, Xiaoxiong (John) Yuan, Yu Chang, Xinliang Lu, Wei W. Wang, See-Eng Phan
  • Patent number: 7520957
    Abstract: A lid assembly for semiconductor processing is provided. In at least one embodiment, the lid assembly includes a first electrode comprising an expanding section that has a gradually increasing inner diameter. The lid assembly also includes a second electrode disposed opposite the first electrode. A plasma cavity is defined between the inner diameter of the expanding section of the first electrode and a first surface of the second electrode.
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: April 21, 2009
    Assignee: Applied Materials, Inc.
    Inventors: Chien-Teh Kao, Jing-Pei (Connie) Chou, Chiukin (Steven) Lai, Sal Umotoy, Joel M. Huston, Son Trinh, Mei Chang, Xiaoxiong (John) Yuan, Yu Chang, Xinliang Lu, Wei W. Wang, See-Eng Phan
  • Publication number: 20080268645
    Abstract: In one embodiment, a method for removing native oxides from a substrate surface is provided which includes supporting a substrate containing silicon oxide within a processing chamber, generating a plasma of reactive species from a gas mixture within the processing chamber, cooling the substrate to a first temperature of less than about 65° C. within the processing chamber, and directing the reactive species to the cooled substrate to react with the silicon oxide thereon while forming a film on the substrate. The film usually contains ammonium hexafluorosilicate. The method further provides positioning the substrate in close proximity to a gas distribution plate, and heating the substrate to a second temperature of about 100° C. or greater within the processing chamber to sublimate or remove the film. The gas mixture may contain ammonia, nitrogen trifluoride, and a carrier gas.
    Type: Application
    Filed: June 6, 2008
    Publication date: October 30, 2008
    Inventors: CHIEN-TEH KAO, Jing-Pei (Connie) Chou, Chiukin (Steven) Lai, Sal Umotoy, Joel M. Huston, Son Trinh, Mei Chang, Xiaoxiong (John) Yuan, Yu Chang, Xinliang Lu, Wei W. Wang, See-Eng Phan
  • Patent number: 7396480
    Abstract: A method for removing native oxides from a substrate surface is provided. In at least one embodiment, the method includes supporting the substrate surface in a vacuum chamber and generating reactive species from a gas mixture within the chamber. The substrate surface is then cooled within the chamber and the reactive species are directed to the cooled substrate surface to react with the native oxides thereon and form a film on the substrate surface. The substrate surface is then heated within the chamber to vaporize the film.
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: July 8, 2008
    Assignee: Applied Materials, Inc.
    Inventors: Chien-Teh Kao, Jing-Pei (Connie) Chou, Chiukin (Steven) Lai, Sal Umotoy, Joel M. Huston, Son Trinh, Mei Chang, Xiaoxiong (John) Yuan, Yu Chang, Xinliang Lu, Wei W. Wang, See-Eng Phan
  • Patent number: 7270891
    Abstract: A passive thermal control blanket and a method for its manufacture, the blanket including a plastic substrate on which is deposited a film that is a homogeneous mixture of silicon and germanium, thereby combining the excellent reflective and electrostatic discharge properties of germanium with the superior adhesion and corrosion resistance properties of silicon. The uniform mixture is preferably obtained by sputtering the two materials simultaneously onto the substrate, using either separate targets, a single mosaic target, or a single composite target.
    Type: Grant
    Filed: November 17, 2004
    Date of Patent: September 18, 2007
    Assignee: Northrop Grumman Corporation
    Inventors: James A. Roth, James T. Hall, Dennis G. Neal, Craig R. Wilkinson, Steven Lai, Mark W. Johnson
  • Publication number: 20060105196
    Abstract: A passive thermal control blanket and a method for its manufacture, the blanket including a plastic substrate on which is deposited a film that is a homogeneous mixture of silicon and germanium, thereby combining the excellent reflective and electrostatic discharge properties of germanium with the superior adhesion and corrosion resistance properties of silicon. The uniform mixture is preferably obtained by sputtering the two materials simultaneously onto the substrate, using either separate targets, a single mosaic target, or a single composite target.
    Type: Application
    Filed: November 17, 2004
    Publication date: May 18, 2006
    Inventors: James Roth, James Hall, Dennis Neal, Craig Wilkinson, Steven Lai, Mark Johnson
  • Publication number: 20050218507
    Abstract: A lid assembly for semiconductor processing is provided. In at least one embodiment, the lid assembly includes a first electrode comprising an expanding section that has a gradually increasing inner diameter. The lid assembly also includes a second electrode disposed opposite the first electrode. A plasma cavity is defined between the inner diameter of the expanding section of the first electrode and a first surface of the second electrode.
    Type: Application
    Filed: May 24, 2005
    Publication date: October 6, 2005
    Inventors: Chien-Teh Kao, Jing-Pei (Connie) Chou, Chiukin (Steven) Lai, Sal Umotoy, Joel Huston, Son Trinh, Mei Chang, Xiaoxiong (John) Yuan, Yu Chang, Xinliang Lu, Wei Wang, See-Eng Phan
  • Publication number: 20050221552
    Abstract: A substrate support assembly and method for supporting a substrate are provided. In at least one embodiment, the support assembly includes a body having one or more fluid conduits disposed therethrough, and a support member disposed on a first end of the body. The support member includes one or more fluid channels formed in an upper surface thereof, wherein each fluid channel is in communication with the one or more of the fluid conduits. The support assembly also includes a cooling medium source in fluid communication with the one or more fluid conduits, and a first electrode having a plurality of holes formed therethrough. The first electrode is disposed on the upper surface of the support member such that each of the plurality of holes is in fluid communication with at least one of the one or more fluid channels formed in the upper surface of the support member.
    Type: Application
    Filed: May 24, 2005
    Publication date: October 6, 2005
    Inventors: Chien-Teh Kao, Jing-Pei (Connie) Chou, Chiukin (Steven) Lai, Sal Umotoy, Joel Huston, Son Trinh, Mei Chang, Xiaoxiong (John) Yuan, Yu Chang, Xinliang Lu, Wei Wang, See-Eng Phan
  • Publication number: 20050205110
    Abstract: A method for removing native oxides from a substrate surface is provided. In at least one embodiment, the method includes supporting the substrate surface in a vacuum chamber and generating reactive species from a gas mixture within the chamber. The substrate surface is then cooled within the chamber and the reactive species are directed to the cooled substrate surface to react with the native oxides thereon and form a film on the substrate surface. The substrate surface is then heated within the chamber to vaporize the film.
    Type: Application
    Filed: May 24, 2005
    Publication date: September 22, 2005
    Inventors: Chien-Teh Kao, Jing-Pei (Connie) Chou, Chiukin (Steven) Lai, Sal Umotoy, Joel Huston, Son Trinh, Mei Chang, Xiaoxiong (John) Yuan, Yu Chang, Xinliang Lu, Wei Wang, See-Eng Phan
  • Publication number: 20040219789
    Abstract: A substrate cleaning apparatus has a remote source to remotely energize a hydrogen-containing gas to form an energized gas having a first ratio of ionic hydrogen-containing species to radical hydrogen-containing species. The apparatus has a process chamber with a substrate support, an ion filter to filter the remotely energized gas to form a filtered energized gas having a second ratio of ionic hydrogen-containing species to radical hydrogen-containing species, the second ratio being different than the first ratio, and a gas distributor to introduce the filtered energized gas into the chamber.
    Type: Application
    Filed: February 12, 2004
    Publication date: November 4, 2004
    Applicant: Applied Materials, Inc.
    Inventors: Bingxi Sun Wood, Mark N. Kawaguchi, James S. Papanu, Roderick C. Mosely, Chiukin Steven Lai, Chien-Teh Kao, Hua Ai, Wei W. Wang