Patents by Inventor Shaoqiang Zhang

Shaoqiang Zhang 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: 20160276210
    Abstract: Integrated circuits and methods for manufacturing the same are provided. A method for producing an integrated circuit includes forming a deep isolation block in an SOI substrate, where the SOI substrate includes a substrate layer overlying a buried insulator that in turn overlies a carrier wafer. The deep isolation block extends through the substrate layer and contacts the buried insulator. A shallow isolation block is formed in the substrate layer, where the shallow isolation block overlies a portion of the substrate layer. An isolation mask is formed overlying at least a portion of the deep isolation block to form a masked isolation block and an exposed isolation block, where the exposed isolation block includes the shallow isolation block. The exposed isolation block is removed such that a trough is defined in the substrate layer where the shallow isolation block was removed, and a gate is formed within the trough.
    Type: Application
    Filed: March 19, 2015
    Publication date: September 22, 2016
    Inventors: Rui Tze Toh, Guan Huei See, Shaoqiang Zhang, Raj Verma Purakh
  • Publication number: 20160133531
    Abstract: Embodiments of a method for forming a device using test structures are presented. The method includes providing a wafer with a device layer. The device layer includes a main device region and a perimeter region. The device layer is patterned with active and test patterns. Test patterns include dummy patterns disposed in a test device area. The wafer is processed to form at least one test device disposed in the perimeter region and one or more active devices disposed in the main device region. The test device determines a design window of the one or more active devices. Additional processing is performed to complete forming the device.
    Type: Application
    Filed: November 12, 2014
    Publication date: May 12, 2016
    Inventors: Wanbing YI, Daxiang WANG, Juan Boon TAN, Kemao LIN, Shaoqiang ZHANG
  • Publication number: 20160071758
    Abstract: Silicon-on-insulator integrated circuits including body contact structures and methods for fabricating the same are disclosed. A method for fabricating a silicon-on-insulator integrated circuit includes filling a plurality of first and second shallow isolation trenches with an insulating material to form plurality of first and second shallow trench isolation (STI) structures, the plurality of second shallow isolation trenches having doped regions therebeneath, and forming a gate structure over the semiconductor layer that includes a first portion disposed over and parallel to at least two of the plurality of second STI structures and a second portion disposed in between the at least two of the plurality of second STI structures. The method further includes forming contact plugs to a body contact or gate region of the semiconductor layer.
    Type: Application
    Filed: September 5, 2014
    Publication date: March 10, 2016
    Inventors: Guan Huei See, Rui Tze Toh, Shaoqiang Zhang, Purakh Raj Verma
  • Patent number: 9230990
    Abstract: Silicon-on-insulator integrated circuits including body contact structures and methods for fabricating the same are disclosed. A method for fabricating a silicon-on-insulator integrated circuit includes filling a plurality of first and second shallow isolation trenches with an insulating material to form plurality of first and second shallow trench isolation (STI) structures, and forming a gate structure over the semiconductor layer that includes a first portion disposed over and parallel to at least two of the plurality of second STI structures and a second portion disposed in between the at least two of the plurality of second STI structures. The method further includes forming contact plugs to a body contact region of the semiconductor layer. The body contact region comprises a portion of the semiconductor layer between at least one of the plurality of first STI structures and at least one of the plurality of second STI structures.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: January 5, 2016
    Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Shaoqiang Zhang, Guan Huei See, Purakh Raj Verma
  • Publication number: 20150294909
    Abstract: Silicon-on-insulator integrated circuits including body contact structures and methods for fabricating the same are disclosed. A method for fabricating a silicon-on-insulator integrated circuit includes filling a plurality of first and second shallow isolation trenches with an insulating material to form plurality of first and second shallow trench isolation (STI) structures, and forming a gate structure over the semiconductor layer that includes a first portion disposed over and parallel to at least two of the plurality of second STI structures and a second portion disposed in between the at least two of the plurality of second STI structures. The method further includes forming contact plugs to a body contact region of the semiconductor layer. The body contact region comprises a portion of the semiconductor layer between at least one of the plurality of first STI structures and at least one of the plurality of second STI structures.
    Type: Application
    Filed: April 15, 2014
    Publication date: October 15, 2015
    Applicant: GLOBALFOUNDRIES Singapore Pte. Ltd.
    Inventors: Shaoqiang Zhang, Guan Huei See, Purakh Raj Verma
  • Patent number: 9087906
    Abstract: Devices and methods for forming a device are presented. The method includes providing a substrate having at least a first region and a second region prepared with isolation regions. The first region is referred to as a chip guarding area and the second region defines a chip region of which at least one transistor is to be formed. The substrate includes a top surface layer, a support substrate and an insulator layer in between them. A transistor is formed in the second region and a substrate contact structure is formed in the first region. The substrate contact structure passes through at least the top surface layer, insulator layer and isolation region and contacts a doped region in the support substrate. The substrate contact structure is connected to at least one conductive line with a desired potential to prevent charging of the support substrate at system level.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: July 21, 2015
    Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Purakh Raj Verma, Shaoqiang Zhang, Bo Yu, Guan Huei See, Rui Tze Toh, Tao Jiang
  • Patent number: 9006055
    Abstract: Methods for forming FIN-shaped field effect transistors (FINFETs) capable of withstanding high voltage applications and the resulting devices are disclosed. Embodiments include forming a source and a drain on a substrate, forming a thin body (FIN) on the substrate and connecting the source and the drain, forming a gate over top and side surfaces of a first part of the FIN, thereby defining a drain-side FIN region of the FIN between the gate and the drain, and forming a shielding region over top and side surfaces of a second part of the FIN in the drain-side FIN region.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: April 14, 2015
    Assignee: Globalfoundries Singapore Pte. Ltd.
    Inventors: Han Xiao, Shaoqiang Zhang, Sanford Chu, Liming Li
  • Publication number: 20150097240
    Abstract: Devices and methods for forming a device are presented. The method includes providing a substrate having at least a first region and a second region prepared with isolation regions. The first region is referred to as a chip guarding area and the second region defines a chip region of which at least one transistor is to be formed. The substrate includes a top surface layer, a support substrate and an insulator layer in between them. A transistor is formed in the second region and a substrate contact structure is formed in the first region. The substrate contact structure passes through at least the top surface layer, insulator layer and isolation region and contacts a doped region in the support substrate. The substrate contact structure is connected to at least one conductive line with a desired potential to prevent charging of the support substrate at system level.
    Type: Application
    Filed: October 2, 2014
    Publication date: April 9, 2015
    Inventors: Purakh Raj VERMA, Shaoqiang ZHANG, Bo YU, Guan Huei SEE, Rui Tze TOH, Tao JIANG
  • Patent number: 8946819
    Abstract: Silicon-on-insulator integrated circuits with local oxidation of silicon and methods for fabricating the same are provided. An integrated circuit includes a semiconductor substrate and a plurality of shallow trench isolation (STI) regions, each extending at least a first depth below an upper surface of the semiconductor substrate. The STI regions electrically isolate devices fabricated in the semiconductor substrate. The integrated circuit further includes a transistor that includes source and drain regions located in the semiconductor substrate, a gate dielectric layer located between the source and drain regions, and a local oxide layer located in a second portion of the semiconductor substrate and extending a second depth below the upper surface of the semiconductor substrate. The first depth is greater than the second depth. Still further, the integrated circuit includes a first gate electrode that extends over the gate dielectric layer and the local oxide layer.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: February 3, 2015
    Assignee: GLOBALFOUNDRIES Singapore Pte. Ltd.
    Inventors: Shaoqiang Zhang, Purakh Raj Verma, Guan Huei See, Youzhou Hu, Wenli Liu
  • Publication number: 20150028407
    Abstract: A capacitor and method of forming a capacitor are presented. The capacitor includes a substrate having a capacitor region in which the capacitor is disposed. The capacitor includes first, second and third sub-capacitors (C1, C2 and C3). The C1 comprises a metal oxide semiconductor (MOS) capacitor which includes a gate on the substrate. The gate includes a gate electrode over a gate dielectric. A first C1 plate is served by the gate electrode, a second C1 plate is served by the substrate of the capacitor region and a C1 capacitor dielectric is served by the gate dielectric. The C2 includes a back-end-of-line (BEOL) vertical capacitor disposed in ILD layers with metal levels and via levels. A plurality of metal lines are disposed in the metal levels. The metal lines of a metal level are grouped in alternating first and second groups, the first group serves as first C2 plates and second group serves as second.
    Type: Application
    Filed: July 23, 2014
    Publication date: January 29, 2015
    Inventors: Laiqiang LUO, Xinshu CAI, Danny SHUM, Fan ZHANG, Khee Yong LIM, Juan Boon TAN, Shaoqiang ZHANG
  • Publication number: 20140332887
    Abstract: Silicon-on-insulator integrated circuits with local oxidation of silicon and methods for fabricating the same are provided. An integrated circuit includes a semiconductor substrate and a plurality of shallow trench isolation (STI) regions, each extending at least a first depth below an upper surface of the semiconductor substrate. The STI regions electrically isolate devices fabricated in the semiconductor substrate. The integrated circuit further includes a transistor that includes source and drain regions located in the semiconductor substrate, a gate dielectric layer located between the source and drain regions, and a local oxide layer located in a second portion of the semiconductor substrate and extending a second depth below the upper surface of the semiconductor substrate. The first depth is greater than the second depth. Still further, the integrated circuit includes a first gate electrode that extends over the gate dielectric layer and the local oxide layer.
    Type: Application
    Filed: May 8, 2013
    Publication date: November 13, 2014
    Applicant: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Shaoqiang Zhang, Purakh Raj Verma, Guan Huei See, Youzhou Hu, Wenli Liu
  • Publication number: 20140210009
    Abstract: Methods for forming FIN-shaped field effect transistors (FINFETs) capable of withstanding high voltage applications and the resulting devices are disclosed. Embodiments include forming a source and a drain on a substrate, forming a thin body (FIN) on the substrate and connecting the source and the drain, forming a gate over top and side surfaces of a first part of the FIN, thereby defining a drain-side FIN region of the FIN between the gate and the drain, and forming a shielding region over top and side surfaces of a second part of the FIN in the drain-side FIN region.
    Type: Application
    Filed: January 30, 2013
    Publication date: July 31, 2014
    Applicant: GLOBALFOUNDRIES Singapore Pte. Ltd.
    Inventors: Han Xiao, Shaoqiang Zhang, Sanford Chu, Liming Li
  • Patent number: 8536016
    Abstract: A method of manufacture of an integrated circuit system includes: providing a substrate including front-end-of-line circuitry; forming a first group of metal layers including a first finger and a second finger over the substrate utilizing a first design rule, the first group of metal layers being formed without a finger via; forming a second group of metal layers including a first finger, a second finger, and a finger via over the first group of metal layers utilizing a second design rule that is larger than the first design rule; and interconnecting the first group of metal layers, including interconnecting a first cluster adjacent to a second cluster, to form a capacitor.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: September 17, 2013
    Assignee: GLOBALFOUNDRIES Singapore Pte. Ltd.
    Inventors: Shao-fu Sanford Chu, Shaoqiang Zhang, Johnny Kok Wai Chew
  • Publication number: 20120007214
    Abstract: A method of manufacture of an integrated circuit system includes: providing a substrate including front-end-of-line circuitry; forming a first group of metal layers including a first finger and a second finger over the substrate utilizing a first design rule, the first group of metal layers being formed without a finger via; forming a second group of metal layers including a first finger, a second finger, and a finger via over the first group of metal layers utilizing a second design rule that is larger than the first design rule; and interconnecting the first group of metal layers, including interconnecting a first cluster adjacent to a second cluster, to form a capacitor.
    Type: Application
    Filed: September 19, 2011
    Publication date: January 12, 2012
    Applicant: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Shao-fu Sanford Chu, Shaoqiang Zhang, Johnny Kok Wai Chew
  • Patent number: 7846805
    Abstract: A structure and a process for a self-aligned vertical PNP transistor for high performance SiGe CBiCMOS process. Embodiments include SiGe CBiCMOS with high-performance SiGe NPN transistors and PNP transistors. As the PNP transistors and NPN transistors contained different types of impurity profile, they need separate lithography and doping step for each transistor. The process is easy to integrate with existing CMOS process to save manufacturing time and cost. As plug-in module, fully integration with SiGe BiCMOS processes. High doping Polysilicon Emitter can increase hole injection efficiency from emitter to base, reduce emitter resistor, and form very shallow EB junction. Self-aligned N+ base implant can reduce base resistor and parasitical EB capacitor. Very low collector resistor benefits from BP layer. PNP transistor can be Isolated from other CMOS and NPN devices by BNwell, Nwell and BN+ junction.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: December 7, 2010
    Assignee: Chartered Semiconductor Manufacturing, Ltd.
    Inventors: Shaoqiang Zhang, Purakh Raj Verma, Sanford Chu
  • Publication number: 20090146258
    Abstract: A structure and a process for a self-aligned vertical PNP transistor for high performance SiGe CBiCMOS process. Embodiments include SiGe CBiCMOS with high-performance SiGe NPN transistors and PNP transistors. As the PNP transistors and NPN transistors contained different types of impurity profile, they need separate lithography and doping step for each transistor. The process is easy to integrate with existing CMOS process to save manufacturing time and cost. As plug-in module, fully integration with SiGe BiCMOS processes. High doping Polysilicon Emitter can increase hole injection efficiency from emitter to base, reduce emitter resistor, and form very shallow EB junction. Self-aligned N+ base implant can reduce base resistor and parasitical EB capacitor. Very low collector resistor benefits from BP layer. PNP transistor can be Isolated from other CMOS and NPN devices by BNwell, Nwell and BN+ junction.
    Type: Application
    Filed: February 9, 2009
    Publication date: June 11, 2009
    Applicant: CHARTERED SEMICONDUCTOR MANUFACTURING, LTD.
    Inventors: Shaoqiang ZHANG, Purakh Raj VERMA, Sanford CHU
  • Patent number: 7488662
    Abstract: A structure and a process for a self-aligned vertical PNP transistor for high performance SiGe CBiCMOS process. Embodiments include SiGe CBiCMOS with high-performance SiGe NPN transistors and PNP transistors. As the PNP transistors and NPN transistors contained different types of impurity profile, they need separate lithography and doping step for each transistor. The process is easy to integrate with existing CMOS process to save manufacturing time and cost. As plug-in module, fully integration with SiGe BiCMOS processes. High doping Polysilicon Emitter can increase hole injection efficiency from emitter to base, reduce emitter resistor, and form very shallow EB junction. Self-aligned N+ base implant can reduce base resistor and parasitical EB capacitor. Very low collector resistor benefits from BP layer. PNP transistor can be Isolated from other CMOS and NPN devices by BNwell, Nwell and BN+ junction.
    Type: Grant
    Filed: December 13, 2005
    Date of Patent: February 10, 2009
    Assignee: Chartered Semiconductor Manufacturing, Ltd.
    Inventors: Shaoqiang Zhang, Purakh Raj Verma, Sanford Chu
  • Publication number: 20070134854
    Abstract: A structure and a process for a self-aligned vertical PNP transistor for high performance SiGe CBiCMOS process. Embodiments include SiGe CBiCMOS with high-performance SiGe NPN transistors and PNP transistors. As the PNP transistors and NPN transistors contained different types of impurity profile, they need separate lithography and doping step for each transistor. The process is easy to integrate with existing CMOS process to save manufacturing time and cost. As plug-in module, fully integration with SiGe BiCMOS processes. High doping Polysilicon Emitter can increase hole injection efficiency from emitter to base, reduce emitter resistor, and form very shallow EB junction. Self-aligned N+ base implant can reduce base resistor and parasitical EB capacitor. Very low collector resistor benefits from BP layer. PNP transistor can be Isolated from other CMOS and NPN devices by BNwell, Nwell and BN+ junction.
    Type: Application
    Filed: December 13, 2005
    Publication date: June 14, 2007
    Inventors: Shaoqiang Zhang, Purakh Verma, Sanford Chu