Patents by Inventor Kok Wai Johnny Chew

Kok Wai Johnny Chew 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: 7573081
    Abstract: A new method is provided for creating an inductor on the surface of a silicon substrate. The invention provides overlying layers of oxide fins beneath a metal inductor. The oxide fins provide the stability support for the overlying metal inductor while also allowing horizontal air columns to simultaneously exist underneath the inductor. Overlying layers of air cavities that are spatially inserted between the created overlying layers of oxide fins can be created under the invention by repetitive application of the mask used. The presence of the air wells on the surface of the substrate significantly reduces parasitic capacitances and series resistance of the inductor associated with the substrate.
    Type: Grant
    Filed: September 11, 2006
    Date of Patent: August 11, 2009
    Assignees: Chartered Semiconductor Manufacturing Ltd., National University of Singapore
    Inventors: Lap Chan, Kok Wai Johnny Chew, Cher Liang Cha, Chee Tee Chua
  • Publication number: 20070007623
    Abstract: A new method is provided for creating an inductor on the surface of a silicon substrate. The invention provides overlying layers of oxide fins beneath a metal inductor. The oxide fins provide the stability support for the overlying metal inductor while also allowing horizontal air columns to simultaneously exist underneath the inductor. Overlying layers of air cavities that are spatially inserted between the created overlying layers of oxide fins can be created under the invention by repetitive application of the mask used. The presence of the air wells on the surface of the substrate significantly reduces parasitic capacitances and series resistance of the inductor associated with the substrate.
    Type: Application
    Filed: September 11, 2006
    Publication date: January 11, 2007
    Inventors: Lap Chan, Kok Wai Johnny Chew, Cher Liang Cha, Chee Tee Chua
  • Patent number: 7105420
    Abstract: A new method is provided for creating an inductor on the surface of a silicon substrate. The invention provides overlying layers of oxide fins beneath a metal inductor. The oxide fins provide the stability support for the overlying metal inductor while also allowing horizontal air columns to simultaneously exist underneath the inductor. Overlying layers of air cavities that are spatially inserted between the created overlying layers of oxide fins can be created under the invention by repetitive application of the mask used. The presence of the air wells on the surface of the substrate significantly reduces parasitic capacitances and series resistance of the inductor associated with the substrate.
    Type: Grant
    Filed: October 7, 1999
    Date of Patent: September 12, 2006
    Assignees: Chartered Semiconductor Manufacturing Ltd., National University of Singapore
    Inventors: Lap Chan, Kok Wai Johnny Chew, Cher Liang Cha, Chee Tee Chua
  • Patent number: 7023315
    Abstract: A method of fabricating an inductor using bonding techniques in the manufacture of integrated circuits is described. Bonding pads are provided over a semiconductor substrate. Input/output connections are made to at least two of the bonding pads. A plurality of wire bond loops are made between each two of the bonding pads wherein the plurality of wire bond loops forms the inductor.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: April 4, 2006
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Kiat Seng Yeo, Hai Peng Tan, Jianguo Ma, Manh Anh Do, Kok Wai Johnny Chew
  • Patent number: 6803848
    Abstract: A new structure and method is provided for the creation of an inductor on the surface of a silicon semiconductor substrate. The inductor is of a helix coil design having upper level and lower level conductors further having an axis whereby the axis of the helix coil of the inductor is parallel to the plane of the underlying substrate. Under the first embodiment of the invention, the height of the helix coil that is created on the surface of a silicon substrate is uniform. Under the second embodiment of the invention the height of the helix coil of the inductor of the invention is uniform while a ferromagnetic core is inserted between the upper and the lower level conductors of the helix coil. Under the third embodiment of the invention, the height of the helix coil that is created on the surface of a silicon substrate is non-uniform.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: October 12, 2004
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Kiat Seng Yeo, Hai Peng Tan, Jian Guo Ma, Manh Anh Do, Kok Wai Johnny Chew
  • Patent number: 6800533
    Abstract: A new structure is provided for the creation of an inductor on the surface of a silicon semiconductor substrate. The inductor is of spiral design and perpendicular to the plane of the underlying substrate. Conductor line width can be selected as narrow or wide, ferromagnetic material can be used to fill the spaces between the conductors of the spiral inductor. The spiral inductor of the invention can further by used in series or in series with conventional horizontal inductors.
    Type: Grant
    Filed: March 6, 2000
    Date of Patent: October 5, 2004
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Kiat Seng Yeo, Hai Peng Tan, Jian Guo Ma, Manh Anh Do, Kok Wai Johnny Chew
  • Publication number: 20030205778
    Abstract: A method of fabricating an inductor using bonding techniques in the manufacture of integrated circuits is described. Bonding pads are provided over a semiconductor substrate. Input/output connections are made to at least two of the bonding pads. A plurality of wire bond loops are made between each two of the bonding pads wherein the plurality of wire bond loops forms the inductor.
    Type: Application
    Filed: May 29, 2003
    Publication date: November 6, 2003
    Applicant: CHARTERED SEMICONDUCTOR MANUFACTURING LTD.
    Inventors: Kiat Seng Yeo, Hat Peng Tan, Jianguo Ma, Manh Anh Do, Kok Wai Johnny Chew
  • Patent number: 6611188
    Abstract: A new structure is provided for the creation of an inductor on the surface of a silicon semiconductor substrate. The inductor is of spiral design and perpendicular to the plane of the underlying substrate. Conductor line width can be selected as narrow or wide, ferromagnetic material can be used to fill the spaces between the conductors of the spiral inductor. The spiral inductor of the invention can further by used in series or in series with conventional horizontal inductors.
    Type: Grant
    Filed: September 3, 2002
    Date of Patent: August 26, 2003
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Kiat Seng Yeo, Hai Yeng Tan, Jiang Guo Ma, Manh Anh Do, Kok Wai Johnny Chew
  • Patent number: 6586309
    Abstract: A method of fabricating an inductor using bonding techniques in the manufacture of integrated circuits is described. Bonding pads are provided over a semiconductor substrate. Input/output connections are made to at least two of the bonding pads. A plurality of wire bond loops are made between each two of the bonding pads wherein the plurality of wire bond loops forms the inductor.
    Type: Grant
    Filed: April 24, 2000
    Date of Patent: July 1, 2003
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Kiat Seng Yeo, Hai Peng Tan, Jianguo Ma, Manh Anh Do, Kok Wai Johnny Chew
  • Patent number: 6535098
    Abstract: A new structure and method is provided for the creation of an inductor on the surface of a silicon semiconductor substrate. The inductor is of a helix coil design having upper level and lower level conductors further having an axis whereby the axis of the helix coil of the inductor is parallel to the plane of the underlying substrate. Under the first embodiment of the invention, the height of the helix coil that is created on the surface of a silicon substrate is uniform. Under the second embodiment of the invention the height of the helix coil of the inductor of the invention is uniform while a ferromagnetic core is inserted between the upper and the lower level conductors of the helix coil. Under the third embodiment of the invention, the height of the helix coil that is created on the surface of a silicon substrate is non-uniform.
    Type: Grant
    Filed: March 6, 2000
    Date of Patent: March 18, 2003
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Kiat Seng Yeo, Hai Peng Tan, Jian Guo Ma, Manh Anh Do, Kok Wai Johnny Chew
  • Publication number: 20030043010
    Abstract: A new structure and method is provided for the creation of an inductor on the surface of a silicon semiconductor substrate. The inductor is of a helix coil design having upper level and lower level conductors further having an axis whereby the axis of the helix coil of the inductor is parallel to the plane of the underlying substrate. Under the first embodiment of the invention, the height of the helix coil that is created on the surface of a silicon substrate is uniform. Under the second embodiment of the invention the height of the helix coil of the inductor of the invention is uniform while a ferromagnetic core is inserted between the upper and the lower level conductors of the helix coil. Under the third embodiment of the invention, the height of the helix coil that is created on the surface of a silicon substrate is non-uniform.
    Type: Application
    Filed: October 15, 2002
    Publication date: March 6, 2003
    Applicant: CHARTERED SEMICONDUCTOR MANUFACTURING LTD.
    Inventors: Kiat Seng Yeo, Hai Peng Tan, Jian Guo Ma, Manh Anh Do, Kok Wai Johnny Chew
  • Publication number: 20030013264
    Abstract: A new structure is provided for the creation of an inductor on the surface of a silicon semiconductor substrate. The inductor is of spiral design and perpendicular to the plane of the underlying substrate. Conductor line width can be selected as narrow or wide, ferromagnetic material can be used to fill the spaces between the conductors of the spiral inductor. The spiral inductor of the invention can further by used in series or in series with conventional horizontal inductors.
    Type: Application
    Filed: September 3, 2002
    Publication date: January 16, 2003
    Applicant: CHARTERED SEMICONDUCTOR MANUFACTURING LTD.
    Inventors: Kiat Seng Yeo, Hai Peng Tan, Jian Guo Ma, Manh Anh Do, Kok Wai Johnny Chew
  • Patent number: 6140197
    Abstract: A new method of fabricating an inductor utilizing air as an underlying barrier in the manufacture of integrated circuits is described. A metal line is provided overlying a dielectric layer on a semiconductor substrate. An intermetal dielectric layer is deposited overlying the metal line and the dielectric layer. The intermetal dielectric layer is patterned whereby a plurality of openings are made through the intermetal dielectric layer to the semiconductor substrate. Thereafter, an oxide layer is deposited overlying the intermetal dielectric layer and capping the plurality of openings thereby forming air gaps within the intermetal dielectric layer. A metal plug is formed through the oxide layer and the intermetal dielectric layer to the metal line.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: October 31, 2000
    Assignees: Chartered Semiconductor Manufacturing Ltd., National University of Singapore
    Inventors: Shau-Fu Sanford Chu, Kok Wai Johnny Chew, Chee Tee Chua, Cher Liang Cha