Patents by Inventor Chien-Hsin Lee

Chien-Hsin Lee 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: 20190035780
    Abstract: Methods, apparatus, and systems relating to a MOSFET with ESD resistance, specifically, to a semiconductor device comprising a field-effect transistor (FET) comprising a gate, a source, and a drain, all extending parallel to each other in a first direction; at least one source electrostatic discharge (ESD) protection circuit; a source terminal disposed above and in electrical contact with the at least one source ESD protection circuit, wherein the source terminal extends in the first direction; at least one drain ESD protection circuit; and a drain terminal disposed above and in electrical contact with the at least one drain ESD protection circuit, wherein the drain terminal extends in the first direction.
    Type: Application
    Filed: September 28, 2018
    Publication date: January 31, 2019
    Applicant: GLOBALFOUNDRIES INC.
    Inventors: Chien-Hsin Lee, Manjunatha Prabhu, Mahadeva Iyer Natarajan
  • Publication number: 20180350796
    Abstract: E-fuse cells and methods for protecting e-fuses are provided. An exemplary e-fuse cell includes an e-fuse having a first end coupled to a source node and a second end selectively coupled to a ground. Further, the exemplary e-fuse includes a selectively activated shunt path from the source node to the ground. Also, the exemplary e-fuse includes a device for activating the shunt path in response to an electrical overstress event.
    Type: Application
    Filed: May 31, 2017
    Publication date: December 6, 2018
    Inventors: Handoko Linewih, Chien-Hsin Lee
  • Patent number: 10147715
    Abstract: Methods to forming trigger-voltage tunable cascode transistors for an ESD protection circuit in FinFET IC devices and resulting devices. Embodiments include providing a substrate including adjacent first-type well areas, over the substrate, each pair of first-type well areas separated by a second-type well area; providing one or more junction areas in each first and second type well area, each junction area being a first type or a second type; forming fins, spaced from each other, perpendicular to and over the first and second type junction areas; and forming junction-type devices by forming electrical connections between the first and second type junction areas in the first-type well areas and the substrate, wherein a first-stage junction-type device in a first-type well area includes stacked first and second type junction areas, and wherein the first-stage junction-type device is adjacent a second-type well area including first and second type junction areas.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: December 4, 2018
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Chien-hsin Lee, Mahadeva Iyer Natarajan, Manjunatha Prabhu
  • Publication number: 20180342501
    Abstract: High-voltage semiconductor devices with electrostatic discharge (ESD) protection and methods of fabrication are provided. The semiconductor devices include a plurality of transistors on a substrate patterned with one or more common gates extending across a portion of the substrate, and a plurality of first S/D contacts and a plurality of second S/D contacts associated with the common gate(s). The second S/D contacts are disposed over a plurality of carrier-doped regions within the substrate. One or more floating nodes are disposed above the substrate and, at least in part, between second S/D contacts to facilitate defining the plurality of carrier-doped regions within the substrate. For instance, the carrier-doped regions may be defined from a mask with a common carrier-region opening, with the floating node(s) intersecting the common carrier-region opening and facilitating defining, along with the common opening, the plurality of separate carrier-doped regions.
    Type: Application
    Filed: August 6, 2018
    Publication date: November 29, 2018
    Applicant: GLOBALFOUNDRIES Inc.
    Inventors: Chien-Hsin LEE, Xiangxiang LU, Manjunatha PRABHU, Mahadeva Iyer NATARAJAN
  • Publication number: 20180323185
    Abstract: Various embodiments include fin-type field effect transistor (FinFET) structures. In some cases, a FinFET structure includes: a p-type substrate; a silicon-controlled rectifier (SCR) over the p-type substrate, the SCR including: a p-well region and an adjacent n-well region over the substrate; and a negatively charged fin over the p-well region; and a Schottky diode electrically coupled with the SCR, the Schottky diode including a gate in the n-well region, the Schottky diode positioned to mitigate electrostatic discharge (ESD) across the negatively charged fin and the n-well region in response to application of a forward voltage across the gate.
    Type: Application
    Filed: July 18, 2018
    Publication date: November 8, 2018
    Inventors: Chien-Hsin Lee, Mahadeva Iyer Natarajan, Manjunatha Prabhu
  • Patent number: 10115718
    Abstract: Methods, apparatus, and systems relating to a MOSFET with ESD resistance, specifically, to a semiconductor device comprising a field-effect transistor (FET) comprising a gate, a source, and a drain, all extending parallel to each other in a first direction; at least one source electrostatic discharge (ESD) protection circuit; a source terminal disposed above and in electrical contact with the at least one source ESD protection circuit, wherein the source terminal extends in the first direction; at least one drain ESD protection circuit; and a drain terminal disposed above and in electrical contact with the at least one drain ESD protection circuit, wherein the drain terminal extends in the first direction.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: October 30, 2018
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Chien-Hsin Lee, Manjunatha Prabhu, Mahadeva Iyer Natarajan
  • Publication number: 20180286801
    Abstract: The present disclosure generally relates to semiconductor structures and, more particularly, to transistor structures and methods of manufacture. The structure includes active metal lines separated by electrically floating metal layers which have a width less than a width of the active metal lines.
    Type: Application
    Filed: March 30, 2017
    Publication date: October 4, 2018
    Inventors: CHIEN-HSIN LEE, HAOJUN ZHANG, MAHADEVA IYER NATARAJAN
  • Patent number: 10083952
    Abstract: Various embodiments include fin-type field effect transistor (FinFET) structures. In some cases, a FinFET structure includes: a substrate; a silicon-controlled rectifier (SCR) over the substrate, the SCR including: a p-well region and an adjacent n-well region over the substrate; and a negatively charged fin over the p-well region; and a Schottky diode electrically coupled with the SCR, the Schottky diode spanning between the p-well region and the n-well region, the Schottky diode for controlling electrostatic discharge (ESD) across the negatively charged fin and the n-well region.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: September 25, 2018
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Chien-Hsin Lee, Mahadeva Iyer Natarajan, Manjunatha Prabhu
  • Patent number: 10073539
    Abstract: A keyboard device includes M driving circuits DC(1)˜DC(M), N transition circuits TC(1)˜TC(N), a control module, M column signal lines C(1)˜C(M), N row signal lines R(1)˜R(N) and M*N key units KU(1,1)˜KU(M,N). The control module performs a scanning process to sequentially scan the M column signal lines C(1)˜C(M) in M scan cycles scan(1)˜scan(M). If the key unit KU(k,x) connected with the k-th column signal line C(k) and the x-th row signal line R(x) is depressed, a scan voltage is transmitted from the k-th column signal line C(k) to the x-th row signal line R(x) through a switch sw(k,x) of the key unit KU(k,x). The transition circuit TC(x) connected with the x-th row signal line R(x) is turned on according to the scan voltage. Consequently, an output voltage Rout(x) from the transition circuit TC(x) has a first voltage level.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: September 11, 2018
    Assignee: DARFON ELECTRONICS CORP.
    Inventors: Chien-Hsin Lee, Wei-Chan Sung
  • Patent number: 10068895
    Abstract: High-voltage semiconductor devices with electrostatic discharge (ESD) protection and methods of fabrication are provided. The semiconductor devices include a plurality of transistors on a substrate patterned with one or more common gates extending across a portion of the substrate, and a plurality of first S/D contacts and a plurality of second S/D contacts associated with the common gate(s). The second S/D contacts are disposed over a plurality of carrier-doped regions within the substrate. One or more floating nodes are disposed above the substrate and, at least in part, between second S/D contacts to facilitate defining the plurality of carrier-doped regions within the substrate. For instance, the carrier-doped regions may be defined from a mask with a common carrier-region opening, with the floating node(s) intersecting the common carrier-region opening and facilitating defining, along with the common opening, the plurality of separate carrier-doped regions.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: September 4, 2018
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Chien-Hsin Lee, Xiangxiang Lu, Manjunatha Prabhu, Mahadeva Iyer Natarajan
  • Publication number: 20180226394
    Abstract: A fin field effect transistor (FinFET) ESD device is disclosed. The device may include: a substrate; a silicon-controlled rectifier (SCR) over the substrate, the SCR including: a p-well region over the substrate; an n-well region laterally abutting the p-well region over the substrate; a first P+ doped region over the p-well region; a first N+ doped region over the p-well region; and a second N+ doped region over the p-well region; and a Schottky diode electrically coupled to the n-well region, wherein the Schottky diode spans the n-well region and the p-well region, and wherein the Schottky diode controls electrostatic discharge (ESD) between the second N+ doped region and the n-well region.
    Type: Application
    Filed: February 8, 2017
    Publication date: August 9, 2018
    Inventors: Chien-Hsin Lee, Mahadeva Iyer Natarajan, Manjunatha Prahbu
  • Publication number: 20180219006
    Abstract: Various embodiments include fin-type field effect transistor (FinFET) structures. In some cases, a FinFET structure includes: a substrate; a silicon-controlled rectifier (SCR) over the substrate, the SCR including: a p-well region and an adjacent n-well region over the substrate; and a negatively charged fin over the p-well region; and a Schottky diode electrically coupled with the SCR, the Schottky diode spanning between the p-well region and the n-well region, the Schottky diode for controlling electrostatic discharge (ESD) across the negatively charged fin and the n-well region.
    Type: Application
    Filed: February 2, 2017
    Publication date: August 2, 2018
    Inventors: Chien-Hsin Lee, Mahadeva Iyer Natarajan, Manjunatha Prabhu
  • Publication number: 20180120951
    Abstract: A keyboard device includes M driving circuits DC(1)˜DC(M), N transition circuits TC(1)˜TC(N), a control module, M column signal lines C(1)˜C(M), N row signal lines R(1)˜R(N) and M*N key units KU(1,1)˜KU(M,N). The control module performs a scanning process to sequentially scan the M column signal lines C(1)˜C(M) in M scan cycles scan(1)˜scan(M). If the key unit KU(k,x) connected with the k-th column signal line C(k) and the x-th row signal line R(x) is depressed, a scan voltage is transmitted from the k-th column signal line C(k) to the x-th row signal line R(x) through a switch sw(k,x) of the key unit KU(k,x). The transition circuit TC(x) connected with the x-th row signal line R(x) is turned on according to the scan voltage. Consequently, an output voltage Rout(x) from the transition circuit TC(x) has a first voltage level.
    Type: Application
    Filed: January 2, 2018
    Publication date: May 3, 2018
    Inventors: Chien-Hsin Lee, Wei-Chan Sung
  • Publication number: 20180083441
    Abstract: Methods, apparatus, and systems relating to a semiconductor device having an ESD function for providing a first ESD current flow in a first path and a second ESD current flow in a second path. The semiconductor device includes a pad for at least one of receiving or transmitting an electrical signal; a victim circuit; an electrostatic discharge (ESD) protection device configured for receiving at least a portion of an ESD current resulting from an ESD event and for protecting the victim circuit from damage from the ESD current; an ESD current control module capable of receiving an ESD current resulting from the ESD event from the pad, wherein the ESD current control module is capable of directing a first ESD current portion through the ESD protection device and a second ESD current portion through the victim circuit.
    Type: Application
    Filed: September 20, 2016
    Publication date: March 22, 2018
    Applicant: GLOBALFOUNDRIES INC.
    Inventors: Mahadeva Iyer Natarajan, Chien-Hsin Lee, Manjunatha Prabhu
  • Patent number: 9921664
    Abstract: A keyboard device includes M driving circuits DC(1)˜DC(M), N transition circuits TC(1)˜TC(N), a control module, M column signal lines C(1)˜C(M), N row signal lines R(1)˜R(N) and M*N key units KU(1,1)˜KU(M,N). The control module performs a scanning process to sequentially scan the M column signal lines C(1)˜C(M) in M scan cycles scan(1)˜scan(M). If the key unit KU(k,x) connected with the k-th column signal line C(k) and the x-th row signal line R(x) is depressed, a scan voltage is transmitted from the k-th column signal line C(k) to the x-th row signal line R(x) through a switch sw(k,x) of the key unit KU(k,x). The transition circuit TC(x) connected with the x-th row signal line R(x) is turned on according to the scan voltage. Consequently, an output voltage Rout(x) from the transition circuit TC(x) has a first voltage level.
    Type: Grant
    Filed: November 24, 2016
    Date of Patent: March 20, 2018
    Assignee: DARFON ELECTRONICS CORP.
    Inventors: Chien-Hsin Lee, Wei-Chan Sung
  • Publication number: 20180026028
    Abstract: Methods to forming trigger-voltage tunable cascode transistors for an ESD protection circuit in FinFET IC devices and resulting devices. Embodiments include providing a substrate including adjacent first-type well areas, over the substrate, each pair of first-type well areas separated by a second-type well area; providing one or more junction areas in each first and second type well area, each junction area being a first type or a second type; forming fins, spaced from each other, perpendicular to and over the first and second type junction areas; and forming junction-type devices by forming electrical connections between the first and second type junction areas in the first-type well areas and the substrate, wherein a first-stage junction-type device in a first-type well area includes stacked first and second type junction areas, and wherein the first-stage junction-type device is adjacent a second-type well area including first and second type junction areas.
    Type: Application
    Filed: April 6, 2017
    Publication date: January 25, 2018
    Inventors: Chien-hsin LEE, Mahadeva Iyer NATARAJAN, Manjunatha PRABHU
  • Patent number: 9831236
    Abstract: An electro-static discharge (ESD) protection transistor device includes a plurality of transistor gates that extend parallel to one another in a first direction and a plurality of source/drain diffusion areas that extend parallel to one another in a second direction perpendicular to the first direction. Each source/drain diffusion area comprises a plurality of source/drain areas disposed between respective ones of the plurality of transistor gates. The ESD protection transistor device further includes a source contact positioned over each source area of the plurality of source areas and a drain contact positioned over each drain area of the plurality of drain areas. With respect to each source/drain diffusion area of the plurality of source/drain diffusion areas, the source contacts are offset from the drain contacts with respect to the first direction.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: November 28, 2017
    Assignee: GLOBALFOUNDRIES, INC.
    Inventors: Chien-Hsin Lee, Xiangxiang Lu, Mahadeva Iyer Natarajan
  • Publication number: 20170309615
    Abstract: Methods, apparatus, and systems relating to a MOSFET with ESD resistance, specifically, to a semiconductor device comprising a field-effect transistor (FET) comprising a gate, a source, and a drain, all extending parallel to each other in a first direction; at least one source electrostatic discharge (ESD) protection circuit; a source terminal disposed above and in electrical contact with the at least one source ESD protection circuit, wherein the source terminal extends in the first direction; at least one drain ESD protection circuit; and a drain terminal disposed above and in electrical contact with the at least one drain ESD protection circuit, wherein the drain terminal extends in the first direction.
    Type: Application
    Filed: April 21, 2016
    Publication date: October 26, 2017
    Applicant: GLOBALFOUNDRIES INC.
    Inventors: Chien-Hsin Lee, Manjunatha Prabhu, Mahadeva Iyer Natarajan
  • Patent number: 9761664
    Abstract: Integrated circuits with lateral bipolar transistors and methods for fabricating the same are provided. An exemplary integrated circuit includes a semiconductor layer overlying an insulator layer. The semiconductor layer includes a first region having a first thickness and a trench region having a second thickness less than the first thickness. The integrated circuit further includes an isolation region formed over the trench region of the semiconductor layer. Also, the integrated circuit includes a lateral bipolar transistor including a base formed in the trench region of the semiconductor layer, an emitter, and a collector.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: September 12, 2017
    Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Wei Gao, Manjunatha Prabhu, Chien-Hsin Lee, Xiangxiang Lu, Vaddagere Nagaraju Vasantha Kumar
  • Publication number: 20170250176
    Abstract: The SCR-based ESD device has a 4-layered PNPN structure (NPN and PNP junction transistors) disposed in SOI having first and second device wells (N-well and P-well) abut forming a NP junction near a midline. First and second contact regions disposed in device wells are coupled to high and low power sources (I/O pad and ground). Internal isolation regions (shallower STI) extending partially not touching the bottom of surface substrate separate the first and second contact regions. A vertical gate is disposed over the NP junction or over a shallower STI which overlaps the NP junction and separate the second contact regions in x-direction. One or more horizontal gates separate the second contact regions in y-direction and guide the device wells underneath the shallower STI to outer edges to connect with the first contact regions for body contacts. A process for forming the device is also disclosed and is compatible with CMOS processes.
    Type: Application
    Filed: February 29, 2016
    Publication date: August 31, 2017
    Inventors: Wei GAO, Shaoqiang ZHANG, Chien-Hsin LEE