Patents by Inventor Abhijeet Paul

Abhijeet Paul 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: 20250221057
    Abstract: In an aspect, an ambient light energy harvesting device includes a semiconductor structure constituting at least a first diode of the ambient light energy harvesting device. The semiconductor structure includes a substrate portion of a first doping type, a first plurality of doped regions of the first doping type over the substrate portion, and a second plurality of doped regions of a second doping type over the substrate portion. The first plurality of doped regions and the second plurality of doped regions are arranged in an alternating manner along a lateral direction.
    Type: Application
    Filed: December 28, 2023
    Publication date: July 3, 2025
    Inventors: Abhijeet PAUL, Mishel MATLOUBIAN, Periannan CHIDAMBARAM, Ravi Pramod Kumar VEDULA, Hyunchul JUNG
  • Publication number: 20250216250
    Abstract: Methods and apparatus for ambient light sensor with spectral resolution are disclosed. In an aspect, an ambient light sensor comprises a photodiode having a light-facing surface comprising a first n-doped layer, a first p-doped layer disposed below and in contact with the first n-doped layer, a second n-doped layer disposed below and in contact with the first p-doped layer, and a second p-doped layer disposed below and in contact with the second n-doped layer. A junction between the first n-doped layer and the first p-doped layer forms a first vertical diode; a junction between first p-doped layer and the second n-doped layer forms a second vertical diode; and a junction between the second n-doped layer and the second p-doped layer forms a third vertical diode and a first lateral diode. Each of the diodes is most sensitive to a different range of light wavelengths than the other diodes.
    Type: Application
    Filed: December 28, 2023
    Publication date: July 3, 2025
    Inventors: Abhijeet PAUL, Mishel MATLOUBIAN, Ravi Pramod Kumar VEDULA, Periannan CHIDAMBARAM, Hyunchul JUNG
  • Publication number: 20250210438
    Abstract: An integrated circuit (IC) structure is described. The IC structure includes a substrate having an active/passive device in the substrate. The IC structure also includes a terminal of the active/passive device in the substrate. The IC structure further includes a floating contact field plate above the terminal. The IC structure also includes a dielectric layer between the floating contact field plate and the terminal of the active/passive device.
    Type: Application
    Filed: December 20, 2023
    Publication date: June 26, 2025
    Inventors: Abhijeet PAUL, Mishel MATLOUBIAN
  • Publication number: 20250207987
    Abstract: An integrated circuit (IC) structure is described, including a substrate and a device on the substrate. The IC structure also includes a first contact field plate above the device. The IC structure further includes a dielectric layer between the first contact field plate and the device. The IC structure also includes a pressure/strain terminal coupled to the first contact field plate.
    Type: Application
    Filed: December 20, 2023
    Publication date: June 26, 2025
    Inventors: Abhijeet PAUL, Mishel MATLOUBIAN, Hsian CHEN
  • Publication number: 20250113606
    Abstract: An integrated circuit (IC) device is described. The IC device includes a semiconductor-on-insulator (SOI) substrate having a first-type diffusion region. The IC device also includes a first, first-type transistor on the first-type diffusion region. The IC device further includes a second, first-type transistor on the first-type diffusion region. The IC device also includes a first, second-type implant region. The first, second-type implant region includes a gate overlap region partially overlapped with a gate region of the second, first-type transistor to provide a body contact of the second, first-type transistor and to couple a source region of the second, first-type transistor to a drain region of the first, first-type transistor in series.
    Type: Application
    Filed: September 28, 2023
    Publication date: April 3, 2025
    Inventors: Ravi Pramod Kumar VEDULA, Abhijeet PAUL
  • Publication number: 20250098323
    Abstract: An integrated circuit (IC) is described. The IC includes a metal-oxide-metal (MOM) capacitor (MOMCAP). The MOMCAP includes a first terminal coupled to a first plurality of fingers of a first metal interconnect layer. The MOMCAP also includes a second terminal coupled to a second plurality of fingers of the first metal interconnect layer and interdigitated with the first plurality of fingers of the first metal interconnect layer. The IC also includes a first metal-oxide-semiconductor (MOS) capacitor (MOSCAP). The first MOSCAP includes a polysilicon terminal coupled to the first plurality of fingers of the MOMCAP. The first MOSCAP also includes a diffusion terminal coupled to the second plurality of fingers of the MOMCAP.
    Type: Application
    Filed: September 19, 2023
    Publication date: March 20, 2025
    Inventors: Ravi Pramod Kumar VEDULA, Abhijeet PAUL, Mishel MATLOUBIAN
  • Publication number: 20250072062
    Abstract: FET designs that exhibit low leakage in the presence of the edge transistor phenomenon. Embodiments includes nFET designs in which the work function ?MF of the gate structure overlying the edge transistors of the nFET is increased by forming extra P+ implant regions within at least a portion of the gate structure, thereby increasing the Vt of the edge transistors to a level that may exceed the Vt of the central conduction channel of the nFET. In some embodiments, the gate structure of the nFET is modified to increase or “flare” the effective channel length of the edge transistors relative to the length of the central conduction channel of the FET. Other methods of changing the work function ?MF of the gate structure overlying the edge transistors are also disclosed. The methods may be adapted to fabricating pFETs by reversing or substituting material types.
    Type: Application
    Filed: September 20, 2024
    Publication date: February 27, 2025
    Inventors: Abhijeet Paul, Simon Edward Willard, Alain Duvallet
  • Publication number: 20250072059
    Abstract: A radio frequency (RF) device is described. The RF device includes a semiconductor-on-insulator (SOI) substrate having a first-type diffusion region. The RF device also includes a transistor including a source region and a drain region in the first-type diffusion region, a gate region between the source region and the drain region, and a body region. The RF device further includes a second-type diffusion region, comprising a gate overlap region partially overlapped by the gate region to define the body region and a second-type diffusion encroachment region in the source region and adjoining the gate overlap region to form a body terminal region, in which a silicidation layer shorts the body terminal region to the source region.
    Type: Application
    Filed: August 24, 2023
    Publication date: February 27, 2025
    Inventors: Ravi Pramod Kumar VEDULA, Abhijeet PAUL, Hyunchul JUNG
  • Patent number: 12228538
    Abstract: In an aspect, a device includes: a first patterned metal layer; a first dielectric layer disposed over the first patterned metal layer; a second patterned metal layer disposed over the first dielectric layer, wherein the first patterned metal layer, the first dielectric layer, and the second patterned metal layer form a first capacitor; a second moisture-sensitive dielectric layer disposed over the second patterned metal layer; and a third patterned metal layer disposed over the second moisture-sensitive dielectric layer, wherein the third patterned metal layer, the second moisture-sensitive dielectric layer, and the second patterned metal layer form a second capacitor that is moisture-sensitive, and the first patterned metal layer is further configured as a heating element to assist in removing moisture from the second moisture-sensitive dielectric layer of the second capacitor in response to provision of an electrical power to the first patterned metal layer.
    Type: Grant
    Filed: March 24, 2023
    Date of Patent: February 18, 2025
    Assignee: QUALCOMM Incorporated
    Inventors: Abhijeet Paul, Mishel Matloubian
  • Patent number: 12206400
    Abstract: A radio frequency integrated circuit (RFIC) is described. The RFIC includes a switch field effect transistor (FET). The switch FET includes a source region, a drain region, a body region, and a gate region. The RFIC also includes a dynamic bias control circuit. The dynamic bias control circuit includes at least one transistor coupled between the body region and the gate region of the switch FET.
    Type: Grant
    Filed: August 22, 2022
    Date of Patent: January 21, 2025
    Assignee: QUALCOMM INCORPORATED
    Inventors: Ravi Pramod Kumar Vedula, Abhijeet Paul, Hyunchul Jung
  • Publication number: 20240413243
    Abstract: A high-voltage switching device that can be fabricated in a standard low-voltage process, such as CMOS, and more specifically SOI CMOS. Embodiments include integrated circuits that combine, in a unitary structure, a FET device and an integrated, co-fabricated modulated resistance region (MRR) controlled by one or more Voltage-Drop Modulation Gates (VDMGs). The VDMGs are generally biased independently of the gate of the FET device, and in such a way as to protect each VDMG from excessive and potentially destructive voltages. In a first embodiment, an integrated circuit high voltage switching device includes a transistor structure including a source, a gate, and an internal drain; an MRR connected to the internal drain of the transistor structure; at least one VDMG that controls the resistance of the MRR; and a drain electrically connected to the MRR. Each VDMG at least partially depletes the MRR upon application of a bias voltage.
    Type: Application
    Filed: June 24, 2024
    Publication date: December 12, 2024
    Inventors: Abhijeet Paul, Simon Edward Willard, Alain Duvallet
  • Patent number: 12155381
    Abstract: A radio frequency (RF) device is described. The RF device includes a switch field effect transistor (FET), having a source region, a drain region, a body region, and a gate region. The RF device also includes a dynamic bias control circuit. The dynamic bias control circuit includes a first transistor coupled to the gate region of the switch FET by a gate resistor. The dynamic bias control circuit also includes a second transistor coupled to the first transistor and coupled to the body region of the switch FET by a body resistor. The dynamic bias control circuit further includes a capacitor coupled to the body region of the switch FET by the body resistor, and the gate region of the switch FET, by the gate resistor.
    Type: Grant
    Filed: February 1, 2023
    Date of Patent: November 26, 2024
    Assignee: QUALCOMM INCORPORATED
    Inventors: Ravi Pramod Kumar Vedula, Abhijeet Paul, Hyunchul Jung
  • Patent number: 12113069
    Abstract: A FET IC structure made using a back-side access process that mitigates or eliminates thermal conductivity problems. In some embodiments, electrically-isolated thermal paths are formed adjacent the FET and configured to conduct heat laterally away from the FET to generally orthogonal thermal pathways, and thence to thermal pads externally accessible at the “top” of the completed IC. In some embodiments having a thermally-conductive handle wafer, electrically-isolated thermal paths are formed adjacent a FET and configured to conduct heat laterally away from the FET. Thermal vias are formed sufficiently so as to be in thermal contact with the handle wafer and with the conventional metallization layers of the device superstructure, at least one of which is in thermal contact with the lateral thermal paths. In some embodiments, the lateral thermal paths may use dummy gates configured to conduct heat laterally away from a FET to generally orthogonal thermal pathways.
    Type: Grant
    Filed: September 1, 2022
    Date of Patent: October 8, 2024
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Abhijeet Paul, Richard James Dowling, Hiroshi Yamada, Alain Duvallet, Ronald Eugene Reedy
  • Publication number: 20240321369
    Abstract: Disclosed are techniques for a semiconductor structure. In an aspect, a semiconductor structure includes a conductive element on an isolation structure, a dielectric film, a first contact structure, wherein at least a portion of the dielectric film is disposed between the conductive element and the first contact structure, and a second contact structure disposed on and electrically coupled with the conductive element. The dielectric film is configured as a resistive element with the first contact structure and the second contact structure being terminals of the resistive element after a dielectric breakdown has occurred within the portion of the dielectric film. Also, the dielectric film is configured as an insulator of a capacitive element with the first contact structure and the second contact structure being terminals of the capacitive element in a case that no dielectric breakdown has occurred within the portion of the dielectric film.
    Type: Application
    Filed: March 20, 2023
    Publication date: September 26, 2024
    Inventors: Abhijeet PAUL, Mishel MATLOUBIAN
  • Publication number: 20240321729
    Abstract: Disclosed is an integrated circuit (IC) with an inductor formed from redistribution layers (RDLs). An airgap is provided in an interlayer dielectric (ILD) under the bottom most RDL that makes up the inductor. In this way, an inductor with high Q value is achieved. Also, inductor isolation is improved. Thus, circuits may be placed under the inductor resulting is a smaller die.
    Type: Application
    Filed: March 20, 2023
    Publication date: September 26, 2024
    Inventors: Abhijeet PAUL, Ravi Pramod Kumar VEDULA, Yufei WU
  • Publication number: 20240319127
    Abstract: In an aspect, a device includes: a first patterned metal layer; a first dielectric layer disposed over the first patterned metal layer; a second patterned metal layer disposed over the first dielectric layer, wherein the first patterned metal layer, the first dielectric layer, and the second patterned metal layer form a first capacitor; a second moisture-sensitive dielectric layer disposed over the second patterned metal layer; and a third patterned metal layer disposed over the second moisture-sensitive dielectric layer, wherein the third patterned metal layer, the second moisture-sensitive dielectric layer, and the second patterned metal layer form a second capacitor that is moisture-sensitive, and the first patterned metal layer is further configured as a heating element to assist in removing moisture from the second moisture-sensitive dielectric layer of the second capacitor in response to provision of an electrical power to the first patterned metal layer.
    Type: Application
    Filed: March 24, 2023
    Publication date: September 26, 2024
    Inventors: Abhijeet PAUL, Mishel MATLOUBIAN
  • Publication number: 20240322791
    Abstract: Disclosed are techniques for an integrated circuit (IC) that includes one or more transistors on a substrate and an interconnection structure on the one or more transistors. The interconnection structure includes a semiconductor structure embedded in the interconnection structure. In an aspect, the semiconductor structure includes a cavity structure, a piezoelectric layer over the cavity structure, an upper conductive structure on the piezoelectric layer, and a first contact structure on the upper conductive structure. In an aspect, the cavity structure includes a bottom that is a part of a first etch stop layer over a substrate, a top that is a part of a second etch stop layer over the first etch stop layer, one or more sidewalls connecting the bottom and the top of the cavity structure, and a cavity between the top and the bottom of the cavity structure and surrounded by the one or more sidewalls.
    Type: Application
    Filed: March 24, 2023
    Publication date: September 26, 2024
    Inventors: Abhijeet PAUL, Jonghae KIM, Mishel MATLOUBIAN
  • Publication number: 20240321370
    Abstract: Disclosed are secure anti-fuse one-time programmable (OTP) bit cells. In an aspect, an OTP bit cell includes a P? well comprising an N+ region and a P+ region, a first contact electrically coupled to the N+ region of the P? well, a second contact electrically coupled to the P+ region of the P? well, an insulating layer disposed over a portion of the N+ region, a portion of the P? well, and a portion of the P+ region, a gate structure disposed over the insulating layer, and a third contact electrically coupled to the gate structure. In an unprogrammed mode, the insulating layer creates a high resistance between the third contact and the second contact, and in a programmed mode, a rupture in the insulating layer creates a low resistance between the third contact and the second contact.
    Type: Application
    Filed: March 22, 2023
    Publication date: September 26, 2024
    Inventors: Abhijeet PAUL, Mishel MATLOUBIAN
  • Patent number: 12100734
    Abstract: FET designs that exhibit low leakage in the presence of the edge transistor phenomenon. Embodiments includes nFET designs in which the work function ?MF of the gate structure overlying the edge transistors of the nFET is increased by forming extra P+ implant regions within at least a portion of the gate structure, thereby increasing the Vt of the edge transistors to a level that may exceed the Vt of the central conduction channel of the nFET. In some embodiments, the gate structure of the nFET is modified to increase or “flare” the effective channel length of the edge transistors relative to the length of the central conduction channel of the FET. Other methods of changing the work function ?MF of the gate structure overlying the edge transistors are also disclosed. The methods may be adapted to fabricating pFETs by reversing or substituting material types.
    Type: Grant
    Filed: October 6, 2022
    Date of Patent: September 24, 2024
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Abhijeet Paul, Simon Edward Willard, Alain Duvallet
  • Patent number: 12062669
    Abstract: FET IC structures that enable formation of integrated capacitors in a “flipped” SOI IC structure made using a back-side access process, such as a “single layer transfer” (SLT) process, and which eliminate or mitigate unwanted parasitic couplings to a handle wafer. In some embodiments, a conductive interconnect layer may be patterned, pre-SLT, to form an isolated first capacitor plate. In other embodiments, pre-SLT, a conductive region of the active layer of an IC may be patterned to form an isolated first capacitor plate, with one or more interconnect layers being fabricated in position to form an electrical contact to the first capacitor plate. In either case, a post-SLT top-side layer of conductive material may be patterned to form a second capacitor plate.
    Type: Grant
    Filed: May 8, 2023
    Date of Patent: August 13, 2024
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Abhijeet Paul, Hiroshi Yamada, Alain Duvallet