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).
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Publication number: 20160276210Abstract: 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: ApplicationFiled: March 19, 2015Publication date: September 22, 2016Inventors: Rui Tze Toh, Guan Huei See, Shaoqiang Zhang, Raj Verma Purakh
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Publication number: 20160133531Abstract: 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: ApplicationFiled: November 12, 2014Publication date: May 12, 2016Inventors: Wanbing YI, Daxiang WANG, Juan Boon TAN, Kemao LIN, Shaoqiang ZHANG
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Publication number: 20160071758Abstract: 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: ApplicationFiled: September 5, 2014Publication date: March 10, 2016Inventors: Guan Huei See, Rui Tze Toh, Shaoqiang Zhang, Purakh Raj Verma
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Patent number: 9230990Abstract: 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: GrantFiled: April 15, 2014Date of Patent: January 5, 2016Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.Inventors: Shaoqiang Zhang, Guan Huei See, Purakh Raj Verma
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Publication number: 20150294909Abstract: 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: ApplicationFiled: April 15, 2014Publication date: October 15, 2015Applicant: GLOBALFOUNDRIES Singapore Pte. Ltd.Inventors: Shaoqiang Zhang, Guan Huei See, Purakh Raj Verma
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Patent number: 9087906Abstract: 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: GrantFiled: October 2, 2014Date of Patent: July 21, 2015Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.Inventors: Purakh Raj Verma, Shaoqiang Zhang, Bo Yu, Guan Huei See, Rui Tze Toh, Tao Jiang
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Patent number: 9006055Abstract: 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: GrantFiled: January 30, 2013Date of Patent: April 14, 2015Assignee: Globalfoundries Singapore Pte. Ltd.Inventors: Han Xiao, Shaoqiang Zhang, Sanford Chu, Liming Li
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Publication number: 20150097240Abstract: 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: ApplicationFiled: October 2, 2014Publication date: April 9, 2015Inventors: Purakh Raj VERMA, Shaoqiang ZHANG, Bo YU, Guan Huei SEE, Rui Tze TOH, Tao JIANG
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Patent number: 8946819Abstract: 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: GrantFiled: May 8, 2013Date of Patent: February 3, 2015Assignee: GLOBALFOUNDRIES Singapore Pte. Ltd.Inventors: Shaoqiang Zhang, Purakh Raj Verma, Guan Huei See, Youzhou Hu, Wenli Liu
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Publication number: 20150028407Abstract: 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: ApplicationFiled: July 23, 2014Publication date: January 29, 2015Inventors: Laiqiang LUO, Xinshu CAI, Danny SHUM, Fan ZHANG, Khee Yong LIM, Juan Boon TAN, Shaoqiang ZHANG
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Publication number: 20140332887Abstract: 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: ApplicationFiled: May 8, 2013Publication date: November 13, 2014Applicant: GLOBALFOUNDRIES SINGAPORE PTE. LTD.Inventors: Shaoqiang Zhang, Purakh Raj Verma, Guan Huei See, Youzhou Hu, Wenli Liu
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Publication number: 20140210009Abstract: 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: ApplicationFiled: January 30, 2013Publication date: July 31, 2014Applicant: GLOBALFOUNDRIES Singapore Pte. Ltd.Inventors: Han Xiao, Shaoqiang Zhang, Sanford Chu, Liming Li
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Patent number: 8536016Abstract: 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: GrantFiled: September 19, 2011Date of Patent: September 17, 2013Assignee: GLOBALFOUNDRIES Singapore Pte. Ltd.Inventors: Shao-fu Sanford Chu, Shaoqiang Zhang, Johnny Kok Wai Chew
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Publication number: 20120007214Abstract: 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: ApplicationFiled: September 19, 2011Publication date: January 12, 2012Applicant: GLOBALFOUNDRIES SINGAPORE PTE. LTD.Inventors: Shao-fu Sanford Chu, Shaoqiang Zhang, Johnny Kok Wai Chew
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Patent number: 7846805Abstract: 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: GrantFiled: February 9, 2009Date of Patent: December 7, 2010Assignee: Chartered Semiconductor Manufacturing, Ltd.Inventors: Shaoqiang Zhang, Purakh Raj Verma, Sanford Chu
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Publication number: 20090146258Abstract: 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: ApplicationFiled: February 9, 2009Publication date: June 11, 2009Applicant: CHARTERED SEMICONDUCTOR MANUFACTURING, LTD.Inventors: Shaoqiang ZHANG, Purakh Raj VERMA, Sanford CHU
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Patent number: 7488662Abstract: 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: GrantFiled: December 13, 2005Date of Patent: February 10, 2009Assignee: Chartered Semiconductor Manufacturing, Ltd.Inventors: Shaoqiang Zhang, Purakh Raj Verma, Sanford Chu
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Publication number: 20070134854Abstract: 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: ApplicationFiled: December 13, 2005Publication date: June 14, 2007Inventors: Shaoqiang Zhang, Purakh Verma, Sanford Chu