Patents by Inventor Wei Hua Cheng

Wei Hua Cheng 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: 8192156
    Abstract: A pneumatic turbine motor air chamber drives a pneumatic turbine to rotate through compressed air. The pneumatic turbine has a ring extended from inside thereof that has a plurality of barriers and forms a housing space to hold a speed regulator. The pneumatic turbine also has an air intake coupling hole leading to the housing space and at least one air discharge vent communicating with an air passage to discharge the compressed air. The ring is integrally formed with the pneumatic turbine to enhance operation steadiness of the pneumatic turbine.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: June 5, 2012
    Assignee: X'Pole Precision Tools Inc.
    Inventor: Wei-Hua Cheng
  • Publication number: 20090232649
    Abstract: A pneumatic turbine motor air chamber drives a pneumatic turbine to rotate through compressed air. The pneumatic turbine has a ring extended from inside thereof that has a plurality of barriers and forms a housing space to hold a speed regulator. The pneumatic turbine also has an air intake coupling hole leading to the housing space and at least one air discharge vent communicating with an air passage to discharge the compressed air. The ring is integrally formed with the pneumatic turbine to enhance operation steadiness of the pneumatic turbine.
    Type: Application
    Filed: March 12, 2008
    Publication date: September 17, 2009
    Inventor: Wei-Hua Cheng
  • Patent number: 7067869
    Abstract: There is a need for adjustable capacitors for use in LC or RC matching networks in micro-circuits. This has been achieved by forming a set of individual capacitors that share a common bottom electrode. The areas of the top electrodes of these individual capacitors are chosen to be in an integral ratio to one another so that they can be combined to produce any capacitance within a range of unit values. For example, if four capacitors whose areas are in the ratio of 5:2:1:1, are provided, then any capacitance in a range of from 1 to 9 can be generated, depending on how the top electrodes are connected. Such connections can be hard-wired within the final wiring level to provide a factory adjustable capacitor or they can be connected through field programmable devices to produce a field programmable capacitor. A process for manufacturing the device is also described.
    Type: Grant
    Filed: January 12, 2004
    Date of Patent: June 27, 2006
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Wei Hua Cheng, Daniel Yen, Chit Hwei Ng, Marvin Liao
  • Patent number: 6803305
    Abstract: A method for forming a via in a damascene process. In one embodiment, the present method comprises depositing a material into a via formed using a damascene process. More particularly, in one embodiment, the material which is comprised of a substantially conformal material which has an etch selectivity with respect to the substrate into which the via is formed. Furthermore, in this embodiment, the material is deposited along the sidewalls and the base of the via. Next, the present embodiment etches material such that the via is formed having a profile conducive to the adherence of overlying material thereto. In this embodiment, the etching of the material is performed without substantially etching the substrate into which the via is formed. In so doing, the present embodiment creates a via in a damascene process which allows for the formation of a metallized interconnect which is substantially free of voids.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: October 12, 2004
    Assignee: Chartered Semiconductor Manufacturing Limited
    Inventors: Daniel Yen, Wei Hua Cheng, Yakub Aliyu, Ding Yi
  • Publication number: 20040147087
    Abstract: There is a need for adjustable capacitors for use in LC or RC matching networks in micro-circuits. This has been achieved by forming a set of individual capacitors that share a common bottom electrode. The areas of the top electrodes of these individual capacitors are chosen to be in an integral ratio to one another so that they can be combined to produce any capacitance within a range of unit values. For example, if four capacitors whose areas are in the ratio of 5:2:1:1, are provided, then any capacitance in a range of from 1 to 9 can be generated, depending on how the top electrodes are connected. Such connections can be hard-wired within the final wiring level to provide a factory adjustable capacitor or they can be connected through field programmable devices to produce a field programmable capacitor. A process for manufacturing the device is also described.
    Type: Application
    Filed: January 12, 2004
    Publication date: July 29, 2004
    Applicant: CHARTERED SEMICONDUCTOR MANUFACTURING LTD.
    Inventors: Wei Hua Cheng, Daniel Yen, Chit Hwei Ng, Marvin Liao
  • Publication number: 20040077174
    Abstract: A method for forming a high aspect ratio via. In one embodiment, the present method comprises providing a first material into which a high aspect ratio via is to be formed. The present embodiment then deposits a first layer of a second material above the first material. Next, the present method recites forming an opening in the first layer of the second material. A second layer of the second material is then deposited above the first layer of the second material and into the opening formed into the first layer of the second material. The present embodiment then etches the second layer of the second material such that the opening extends through the second layer of the second material and through the first layer of the second material. In so doing, the opening is configured to have a profile conducive to the adherence of overlying material thereto.
    Type: Application
    Filed: October 18, 2002
    Publication date: April 22, 2004
    Applicants: CHARTERED SEMICONDUCTOR MANUFACTURING LTD., AGILENT TECHNOLOGIES, INC.
    Inventors: Daniel Yen, Wei Hua Cheng, Yakub Aliyu
  • Patent number: 6713335
    Abstract: A process for fabricating a CMOS device in which conductive gate structures are defined self-aligned to shallow trench isolation (STI), regions, without using a photolithographic procedure, has been developed. The process features definition of shallow trench openings in regions of a semiconductor substrate not covered by dummy gate structures, or by silicon oxide spacers located on sides of the dummy gate structures. Filling of the shallow trench openings with silicon oxide, and removal of the dummy gate structures, result in STI regions comprised of filled shallow trench openings, overlying silicon oxide shapes, and silicon oxide sidewall spacers on the sides of the overlying silicon oxide shapes. Formation of silicon nitride spacers on the sides of the STI regions, is followed by deposition of a high k gate insulator layer and of a conductive gate structure, with the conductive gate structure formed self-aligned to the STI regions.
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: March 30, 2004
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Daniel Yen, Ching-Thiam Chung, Wei Hua Cheng, Chester Nieh, Tong Boon Lee
  • Publication number: 20040038466
    Abstract: A process for fabricating a CMOS device in which conductive gate structures are defined self-aligned to shallow trench isolation (STI), regions, without using a photolithographic procedure, has been developed. The process features definition of shallow trench openings in regions of a semiconductor substrate not covered by dummy gate structures, or by silicon oxide spacers located on sides of the dummy gate structures. Filling of the shallow trench openings with silicon oxide, and removal of the dummy gate structures, result in STI regions comprised of filled shallow trench openings, overlying silicon oxide shapes, and silicon oxide sidewall spacers on the sides of the overlying silicon oxide shapes. Formation of silicon nitride spacers on the sides of the STI regions, is followed by deposition of a high k gate insulator layer and of a conductive gate structure, with the conductive gate structure formed self-aligned to the STI regions.
    Type: Application
    Filed: August 22, 2002
    Publication date: February 26, 2004
    Applicant: Taiwan Semiconductor Manufacturing Company
    Inventors: Daniel Yen, Ching-Thiam Chung, Wei Hua Cheng, Chester Nieh, Tong Boon Lee
  • Patent number: 6689643
    Abstract: There is a need for adjustable capacitors for use in LC or RC matching networks in micro-circuits. This has been achieved by forming a set of individual capacitors that share a common bottom electrode. The areas of the top electrodes of these individual capacitors are chosen to be in an integral ratio to one another so that they can be combined to produce any capacitance within a range of unit values. For example, if four capacitors whose areas are in the ratio of 5:2:1:1, are provided, then any capacitance in a range of from 1 to 9 can be generated, depending on how the top electrodes are connected. Such connections can be hard-wired within the final wiring level to provide a factory adjustable capacitor or they can be connected through field programmable devices to produce a field programmable capacitor. A process for manufacturing the device is also described.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: February 10, 2004
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Wei Hua Cheng, Daniel Yen, Chit Hwei Ng, Marvin Liao
  • Patent number: 6686279
    Abstract: A method and apparatus for reducing gouging during via formation. In one embodiment, the present invention is comprised of a method which includes forming an opening into a substrate. The opening is formed extending into the substrate and terminating on at least a portion of a target to which it is desired to form an electrical connection. After the formation of the opening, the present embodiment lines the opening with a liner material. In this embodiment, the liner material is adapted to at least partially fill a portion of the opening which is not landed on the target. The liner material of the present embodiment prevents substantial further etching of the substrate conventionally caused by the opening being at least partially unlanded on the target. Next, the present embodiment subjects the liner material to an etching process such that the liner material is substantially removed from that region of the target where the opening was landed on the target.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: February 3, 2004
    Assignee: Chartered Semiconductor Manufacturing Limited
    Inventors: Daniel Yen, Wei Hua Cheng, Yakub Aliyu, Lee Yuan Ping
  • Publication number: 20030201476
    Abstract: There is a need for adjustable capacitors for use in LC or RC matching networks in micro-circuits. This has been achieved by forming a set of individual capacitors that share a common bottom electrode. The areas of the top electrodes of these individual capacitors are chosen to be in an integral ratio to one another so that they can be combined to produce any capacitance within a range of unit values. For example, if four capacitors whose areas are in the ratio of 5:2:1:1, are provided, then any capacitance in a range of from 1 to 9 can be generated, depending on how the top electrodes are connected. Such connections can be hard-wired within the final wiring level to provide a factory adjustable capacitor or they can be connected through field programmable devices to produce a field programmable capacitor. A process for manufacturing the device is also described.
    Type: Application
    Filed: April 25, 2002
    Publication date: October 30, 2003
    Applicant: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Wei Hua Cheng, Daniel Yen, Chit Hwei Ng, Marvin Liao
  • Publication number: 20030194856
    Abstract: A method for forming a via in a damascene process. In one embodiment, the present method comprises depositing a material into a via formed using a damascene process. More particularly, in one embodiment, the material which is comprised of a substantially conformal material which has an etch selectivity with respect to the substrate into which the via is formed. Furthermore, in this embodiment, the material is deposited along the sidewalls and the base of the via. Next, the present embodiment etches material such that the via is formed having a profile conducive to the adherence of overlying material thereto. In this embodiment, the etching of the material is performed without substantially etching the substrate into which the via is formed. In so doing, the present embodiment creates a via in a damascene process which allows for the formation of a metallized interconnect which is substantially free of voids.
    Type: Application
    Filed: April 10, 2002
    Publication date: October 16, 2003
    Inventors: Daniel Yen, Wei Hua Cheng, Yakub Aliyu, Ding Yi
  • Patent number: 6630380
    Abstract: A method for making metal-insulator-metal (MIM) capacitors having insulators with high-dielectric-constant or ferroelectric interelectrode films compatible with the dual-damascene process is achieved. The method of integrating the MIM with a dual-damascene process is to form a planar a first insulating layer and to deposit an etch-stop layer and a second insulating layer. Capacitor node contact openings are etched to the substrate and first recesses are etched to the etch-stop layer. The contact openings and first recesses are filled with a conducting layer using a dual-damascene process. Second recesses are formed in the second insulating layer around the capacitor node contacts. A conformal first metal layer, an interelectrode dielectric layer, and a second metal layer are deposited, and are patterned at the same time to form the capacitors over the node contacts. The second recesses increase the capacitor area while the simultaneous patterning of the metal layers results in fewer processing steps.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: October 7, 2003
    Assignee: Chartered Semiconductor Manufacturing Ltd
    Inventors: Wei-Hua Cheng, Daniel Yen, Kunihiko Takahashi, Ming Lei, Thomas Joy
  • Publication number: 20030186542
    Abstract: A method and apparatus for reducing gouging during via formation. In one embodiment, the present invention is comprised of a method which includes forming an opening into a substrate. The opening is formed extending into the substrate and terminating on at least a portion of a target to which it is desired to form an electrical connection. After the formation of the opening, the present embodiment lines the opening with a liner material. In this embodiment, the liner material is adapted to at least partially fill a portion of the opening which is not landed on the target. The liner material of the present embodiment prevents substantial further etching of the substrate conventionally caused by the opening being at least partially unlanded on the target. Next, the present embodiment subjects the liner material to an etching process such that the liner material is substantially removed from that region of the target where the opening was landed on the target.
    Type: Application
    Filed: April 1, 2002
    Publication date: October 2, 2003
    Inventors: Daniel Yen, Wei Hua Cheng, Yakub Aliyu, Lee Yuan Ping
  • Patent number: 5980186
    Abstract: A semiconductor wafer carrier fork cover to prevent damage to prevent breakage of the semiconductor wafer carrier forks mounted on a robotic semiconductor wafer transfer system during preventative maintenance procedures is described. A semiconductor wafer carrier fork cover has a lower support unit. The lower support unit will fit onto the base of a robotic semiconductor wafer transfer system. An upper covering unit is integrally attached to the lower support unit and will shield the semiconductor wafer carrier forks during preventive maintenance procedures.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: November 9, 1999
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventor: Wei Hua Cheng
  • Patent number: 5743138
    Abstract: A float device is disclosed with an improved external surface having an outwardly concave curvature and a plurality of elongated grooves spirally formed on the concave surface. The concave surface provides improved clearance between the float device and the walls of the pipe that it is disposed in. Therefore, the float device is less subject to being lodged or stuck especially in highly viscous liquids. The spiral grooves provide additional passageway and stability by imparting rotational torque to the floating device when measuring flow rates in moving fluids in pipes. In another embodiment, the float device is annular in shape having an inner surface with a curvature and spiral grooves. Same improved effects are obtained as the float device rides up and down a column like a collar in measuring the fluid level or fluid flow rates.
    Type: Grant
    Filed: January 22, 1997
    Date of Patent: April 28, 1998
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventor: Wei Hua Cheng