Patents by Inventor Lawrence Chang-Lai Lei

Lawrence Chang-Lai Lei 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: 6545420
    Abstract: A domed plasma reactor chamber uses an antenna driven by RF energy (LF, MF, or VHF) which is inductively coupled inside the reactor dome. The antenna generates a high density, low energy plasma inside the chamber for etching metals, dielectrics and semiconductor materials. Auxiliary RF bias energy applied to the wafer support cathode controls the cathode sheath voltage and controls the ion energy independent of density. Various magnetic and voltage processing enhancement techniques are disclosed, along with etch processes, deposition processes and combined etch/deposition processed. The disclosed invention provides processing of sensitive devices without damage and without microloading, thus providing increased yields.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: April 8, 2003
    Assignee: Applied Materials, Inc.
    Inventors: Kenneth S. Collins, Craig A. Roderick, John R. Trow, Chan-Lon Yang, Jerry Yuen-Kui Wong, Jeffrey Marks, Peter R. Keswick, David W. Groechel, Jay D. Pinson, II, Tetsuya Ishikawa, Lawrence Chang-Lai Lei, Masato M. Toshima
  • Patent number: 6518195
    Abstract: A domed plasma reactor chamber uses an antenna driven by RF energy (LF, MF, or VHF) which is inductively coupled inside the reactor dome. The antenna generates a high density, low energy plasma inside the chamber for etching metals, dielectrics and semiconductor materials. Auxiliary RF bias energy applied to the 10 wafer support cathode controls the cathode sheath voltage and controls the ion energy independent of density. Various magnetic and voltage processing enhancement techniques are disclosed, along with etch processes deposition processes and combined etch/deposition processed. The disclosed invention provides processing of sensitive devices without damage and without microloading, thus providing increased yields.
    Type: Grant
    Filed: February 15, 2000
    Date of Patent: February 11, 2003
    Assignee: Applied Materials, Inc.
    Inventors: Kenneth S. Collins, Chan-Lon Yang, Jerry Yuen-Kui Wong, Jeffrey Marks, Peter R. Keswick, David W. Groechel, Craig A. Roderick, John R. Trow, Tetsuya Ishikawa, Jay D. Pinson, II, Lawrence Chang-Lai Lei, Masato M. Toshima, Gerald Zheyao Yin
  • Patent number: 6488807
    Abstract: The invention is embodied in an RF plasma reactor for processing a semiconductor workpiece, including wall structures for containing a plasma therein, a workpiece support, a coil antenna capable of receiving a source RF power signal and being juxtaposed near the chamber, the workpiece support including a bias electrode capable of receiving a bias RF power signal, and first and second magnet structures adjacent the wall structure and in spaced relationship, with one pole of the first magnet structure facing an opposite pole of the second magnet structure, the magnet structures providing a plasma-confining static magnetic field adjacent said wall structure.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: December 3, 2002
    Assignee: Applied Materials, Inc.
    Inventors: Kenneth S. Collins, Chan-Lon Yang, Jerry Yuen-Kui Wong, Jeffrey Marks, Peter R. Keswick, David W. Groechel, Craig A. Roderick, John R. Trow, Tetsuya Ishikawa, Jay D. Pinson, II, Lawrence Chang-Lai Lei, Masato M. Toshima, Gerald Zheyao Yin
  • Publication number: 20020004309
    Abstract: A domed plasma reactor chamber uses an antenna driven by RF energy (LF, MF, or VHF) which is inductively coupled inside the reactor dome. The antenna generates a high density, low energy plasma inside the chamber for etching metals, dielectrics and semiconductor materials. Auxiliary RF bias energy applied to the wafer support cathode controls the cathode sheath voltage and controls the ion energy independent of density. Various magnetic and voltage processing enhancement techniques are disclosed, along with etch processes, deposition processes and combined etch/deposition processed. The disclosed invention provides processing of sensitive devices without damage and without microloading, thus providing increased yields.
    Type: Application
    Filed: June 9, 1999
    Publication date: January 10, 2002
    Inventors: KENNETH S. COLLINS, CRAIG A. RODERICK, JOHN R. TROW, CHAN-LON YANG, JERRY YUEN-KUI WONG, JEFFREY MARKS, PETER R. KESWICK, DAVID W. GROECHEL, JAY D. PINSON, TETSUYA ISHIKAWA, LAWRENCE CHANG-LAI LEI, MASATO M. TOSHIMA
  • Patent number: 6251792
    Abstract: A domed plasma reactor chamber uses an antenna driven by RF energy (LF, MF, or VHF) which is inductively coupled inside the reactor dome. The antenna generates a high density, low energy plasma inside the chamber for etching metals, dielectrics and semiconductor materials. Auxiliary RF bias energy applied to the wafer support cathode controls the cathode sheath voltage and controls the ion energy independent of density. Various magnetic and voltage processing enhancement techniques are disclosed, along with etch processes, deposition processes and combined etch/deposition processed. The disclosed invention provides processing of sensitive devices without damage and without microloading, thus providing increased yields.
    Type: Grant
    Filed: October 10, 1997
    Date of Patent: June 26, 2001
    Assignee: Applied Materials, Inc.
    Inventors: Kenneth S. Collins, Craig A. Roderick, John R. Trow, Chan-Lon Yang, Jerry Yuen-Kui Wong, Jeffrey Marks, Peter R. Keswick, David W. Groechel, Jay D. Pinson, II, Tetsuya Ishikawa, Lawrence Chang-Lai Lei, Masato M. Toshima, Gerald Zheyao Yin
  • Patent number: 6068784
    Abstract: A domed plasma reactor chamber uses an antenna driven by RF energy (LF, MF, or VHF) which is inductively coupled inside the reactor dome. The antenna generates a high density, low energy plasma inside the chamber for etching metals, dielectrics and semiconductor materials. Auxiliary RF bias energy applied to the wafer support cathode controls the cathode sheath voltage and controls the ion energy independent of density. Various magnetic and voltage processing enhancement techniques are disclosed, along with etch processes, deposition processes and combined etch/deposition processed. The disclosed invention provides processing of sensitive devices without damage and without microloading, thus providing increased yields.
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: May 30, 2000
    Assignee: Applied Materials, Inc.
    Inventors: Kenneth S. Collins, Craig A. Roderick, John R. Trow, Chan-Lon Yang, Jerry Yuen-Kui Wong, Jeffrey Marks, Peter R. Keswick, David W. Groechel, Jay D. Pinson, II, Tetsuya Ishikawa, Lawrence Chang-Lai Lei, Masato M. Toshima