Patents by Inventor Rajni J. Aggarwal
Rajni J. Aggarwal 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: 20240429275Abstract: An electronic device comprises a semiconductor substrate including majority carrier dopants of a first conductivity type, a semiconductor surface layer including majority carrier dopants of a second conductivity type, field oxide that extends on the semiconductor surface layer, and an isolation structure. The isolation structure includes a trench that extends through the semiconductor surface layer and into one of the semiconductor substrate and a buried layer of the semiconductor substrate, and polysilicon including majority carrier dopants of the second conductivity type, the polysilicon fills the trench to a side of the semiconductor surface layer.Type: ApplicationFiled: July 18, 2024Publication date: December 26, 2024Inventors: Abbas Ali, Rajni J. Aggarwal, Steven J. Adler, Eugene C. Davis
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Patent number: 12087813Abstract: An electronic device comprises a semiconductor substrate including majority carrier dopants of a first conductivity type, a semiconductor surface layer including majority carrier dopants of a second conductivity type, field oxide that extends on the semiconductor surface layer, and an isolation structure. The isolation structure includes a trench that extends through the semiconductor surface layer and into one of the semiconductor substrate and a buried layer of the semiconductor substrate, and polysilicon including majority carrier dopants of the second conductivity type, the polysilicon fills the trench to a side of the semiconductor surface layer.Type: GrantFiled: August 31, 2021Date of Patent: September 10, 2024Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Abbas Ali, Rajni J. Aggarwal, Steven J. Adler, Eugene C. Davis
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Publication number: 20230298946Abstract: An integrated circuit includes a bipolar transistor extending into a [100] surface of a semiconductor substrate having a crystalline lattice. A deep trench surrounds the bipolar transistor and has a path having a plurality of sides. At least one side extends in a direction parallel to a <100> axis of the crystalline lattice.Type: ApplicationFiled: December 30, 2022Publication date: September 21, 2023Inventors: Abbas Ali, Rajni J. Aggarwal, Steven J Adler
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Publication number: 20230060695Abstract: An electronic device comprises a semiconductor substrate including majority carrier dopants of a first conductivity type, a semiconductor surface layer including majority carrier dopants of a second conductivity type, field oxide that extends on the semiconductor surface layer, and an isolation structure. The isolation structure includes a trench that extends through the semiconductor surface layer and into one of the semiconductor substrate and a buried layer of the semiconductor substrate, and polysilicon including majority carrier dopants of the second conductivity type, the polysilicon fills the trench to a side of the semiconductor surface layer.Type: ApplicationFiled: August 31, 2021Publication date: March 2, 2023Applicant: Texas Instruments IncorporatedInventors: Abbas Ali, Rajni J. Aggarwal, Steven J. Adler, Eugene C. Davis
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Patent number: 10872925Abstract: A CMOS integrated circuit includes a Hall sensor having a Hall plate formed in a first isolation layer which is formed concurrently with a second isolation layer under a MOS transistor. A first shallow well with a conductivity type opposite from the first isolation layer is formed over, and extending to, the Hall plate. The first shallow well is formed concurrently with a second shallow well under the MOS transistor. The Hall sensor may be a horizontal Hall sensor for sensing magnetic fields oriented perpendicular to the top surface of the substrate of the integrated circuit, or may be a vertical Hall sensor for sensing magnetic fields oriented parallel to the top surface of the substrate of the integrated circuit.Type: GrantFiled: June 26, 2019Date of Patent: December 22, 2020Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Keith Ryan Green, Rajni J. Aggarwal, Ajit Sharma
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Publication number: 20190319068Abstract: A CMOS integrated circuit includes a Hall sensor having a Hall plate formed in a first isolation layer which is formed concurrently with a second isolation layer under a MOS transistor. A first shallow well with a conductivity type opposite from the first isolation layer is formed over, and extending to, the Hall plate. The first shallow well is formed concurrently with a second shallow well under the MOS transistor. The Hall sensor may be a horizontal Hall sensor for sensing magnetic fields oriented perpendicular to the top surface of the substrate of the integrated circuit, or may be a vertical Hall sensor for sensing magnetic fields oriented parallel to the top surface of the substrate of the integrated circuit.Type: ApplicationFiled: June 26, 2019Publication date: October 17, 2019Inventors: Keith Ryan Green, Rajni J. Aggarwal, Ajit Sharma
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Patent number: 10396122Abstract: A CMOS integrated circuit includes a Hall sensor having a Hall plate formed in a first isolation layer which is formed concurrently with a second isolation layer under a MOS transistor. A first shallow well with a conductivity type opposite from the first isolation layer is formed over, and extending to, the Hall plate. The first shallow well is formed concurrently with a second shallow well under the MOS transistor. The Hall sensor may be a horizontal Hall sensor for sensing magnetic fields oriented perpendicular to the top surface of the substrate of the integrated circuit, or may be a vertical Hall sensor for sensing magnetic fields oriented parallel to the top surface of the substrate of the integrated circuit.Type: GrantFiled: June 30, 2017Date of Patent: August 27, 2019Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Keith Ryan Green, Rajni J. Aggarwal, Ajit Sharma
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Patent number: 10339251Abstract: A method to adjust transistor gate geometries in a design data base to compensate for transistor-to-transistor active overlap of gate differences and to form a reticle. A method to adjust transistor geometries in a design data base to compensate for transistor-to-transistor active overlap of gate differences and to compensate for transistor turn on voltage drop off where the transistor gate crosses the isolation/active interface.Type: GrantFiled: April 24, 2017Date of Patent: July 2, 2019Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Ashesh Parikh, Chi-Chien Ho, Thomas John Smelko, Rajni J. Aggarwal
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Patent number: 9818740Abstract: An integrated circuit includes an NMOS transistor, a PMOS transistor and a vertical bipolar transistor. The vertical bipolar transistor has an intrinsic base with a band barrier at least 25 meV high at a surface boundary of the intrinsic base, except at an emitter-base junction with an emitter, and except at a base-collector junction with a collector. The intrinsic base may be laterally surrounded by an extrinsic base with a higher dopant density than the intrinsic base, wherein a higher dopant density provides the band barrier at lateral surfaces of the intrinsic base. A gate may be disposed on a gate dielectric layer over a top surface boundary of the intrinsic base adjacent to the emitter. The gate is configured to accumulate the intrinsic base immediately under the gate dielectric layer, providing the band barrier at the top surface boundary of the intrinsic base.Type: GrantFiled: December 5, 2016Date of Patent: November 14, 2017Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Weidong Tian, YuGuo Wang, Tathagata Chatterjee, Rajni J. Aggarwal
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Publication number: 20170301726Abstract: A CMOS integrated circuit includes a Hall sensor having a Hall plate formed in a first isolation layer which is formed concurrently with a second isolation layer under a MOS transistor. A first shallow well with a conductivity type opposite from the first isolation layer is formed over, and extending to, the Hall plate. The first shallow well is formed concurrently with a second shallow well under the MOS transistor. The Hall sensor may be a horizontal Hall sensor for sensing magnetic fields oriented perpendicular to the top surface of the substrate of the integrated circuit, or may be a vertical Hall sensor for sensing magnetic fields oriented parallel to the top surface of the substrate of the integrated circuit.Type: ApplicationFiled: June 30, 2017Publication date: October 19, 2017Inventors: Keith Ryan Green, Rajni J. Aggarwal, Ajit Sharma
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Patent number: 9773793Abstract: A transistor structure with stress enhancement geometry aligned above the channel region. Also, a transistor structure with stress enhancement geometries located above and aligned with opposite sides of the channel region. Furthermore, methods for fabricating integrated circuits containing transistors with stress enhancement geometries.Type: GrantFiled: October 9, 2009Date of Patent: September 26, 2017Assignee: TEXAS INSTUMENTS INCORPORATEDInventors: Scott R. Summerfelt, Rajni J. Aggarwal, Shaoping Tang
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Publication number: 20170228488Abstract: A method to adjust transistor gate geometries in a design data base to compensate for transistor-to-transistor active overlap of gate differences and to form a reticle. A method to adjust transistor geometries in a design data base to compensate for transistor-to-transistor active overlap of gate differences and to compensate for transistor turn on voltage drop off where the transistor gate crosses the isolation/active interface.Type: ApplicationFiled: April 24, 2017Publication date: August 10, 2017Inventors: Ashesh PARIKH, Chi-Chien HO, Thomas John SMELKO, Rajni J. AGGARWAL
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Patent number: 9728581Abstract: A CMOS integrated circuit includes a Hall sensor having a Hall plate formed in a first isolation layer which is formed concurrently with a second isolation layer under a MOS transistor. A first shallow well with a conductivity type opposite from the first isolation layer is formed over, and extending to, the Hall plate. The first shallow well is formed concurrently with a second shallow well under the MOS transistor. The Hall sensor may be a horizontal Hall sensor for sensing magnetic fields oriented perpendicular to the top surface of the substrate of the integrated circuit, or may be a vertical Hall sensor for sensing magnetic fields oriented parallel to the top surface of the substrate of the integrated circuit.Type: GrantFiled: November 4, 2015Date of Patent: August 8, 2017Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Keith Ryan Green, Rajni J. Aggarwal, Ajit Sharma
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Patent number: 9698211Abstract: An integrated circuit containing CMOS gates and a counterdoped polysilicon gate material resistor which has a body region that is implanted concurrently with the NSD layers of the NMOS transistors of the CMOS gates and concurrently with the PSD layers of the PMOS transistors of the CMOS gates, and has a resistor silicide block layer over the body region which is formed of separate material from the sidewall spacers on the CMOS gates. A process of forming an integrated circuit containing CMOS gates and a counterdoped polysilicon gate material resistor which implants the body region of the resistor concurrently with the NSD layers of the NMOS transistors of the CMOS gates and concurrently with the PSD layers of the PMOS transistors of the CMOS gates, and forms a resistor silicide block layer over the body region of separate material from the sidewall spacers on the CMOS gates.Type: GrantFiled: May 6, 2016Date of Patent: July 4, 2017Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Rajni J. Aggarwal, Jau-Yuann Yang
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Patent number: 9665675Abstract: A method to adjust transistor gate geometries in a design data base to compensate for transistor-to-transistor active overlap of gate differences and to form a reticle. A method to adjust transistor geometries in a design data base to compensate for transistor-to-transistor active overlap of gate differences and to compensate for transistor turn on voltage drop off where the transistor gate crosses the isolation/active interface.Type: GrantFiled: December 8, 2014Date of Patent: May 30, 2017Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Ashesh Parikh, Chi-Chien Ho, Thomas John Smelko, Rajni J. Aggarwal
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Publication number: 20170141101Abstract: An integrated circuit includes an NMOS transistor, a PMOS transistor and a vertical bipolar transistor. The vertical bipolar transistor has an intrinsic base with a band barrier at least 25 meV high at a surface boundary of the intrinsic base, except at an emitter-base junction with an emitter, and except at a base-collector junction with a collector. The intrinsic base may be laterally surrounded by an extrinsic base with a higher dopant density than the intrinsic base, wherein a higher dopant density provides the band barrier at lateral surfaces of the intrinsic base. A gate may be disposed on a gate dielectric layer over a top surface boundary of the intrinsic base adjacent to the emitter. The gate is configured to accumulate the intrinsic base immediately under the gate dielectric layer, providing the band barrier at the top surface boundary of the intrinsic base.Type: ApplicationFiled: December 5, 2016Publication date: May 18, 2017Inventors: Weidong Tian, YuGuo Wang, Tathagata Chatterjee, Rajni J. Aggarwal
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Publication number: 20170125479Abstract: A CMOS integrated circuit includes a Hall sensor having a Hall plate formed in a first isolation layer which is formed concurrently with a second isolation layer under a MOS transistor. A first shallow well with a conductivity type opposite from the first isolation layer is formed over, and extending to, the Hall plate. The first shallow well is formed concurrently with a second shallow well under the MOS transistor. The Hall sensor may be a horizontal Hall sensor for sensing magnetic fields oriented perpendicular to the top surface of the substrate of the integrated circuit, or may be a vertical Hall sensor for sensing magnetic fields oriented parallel to the top surface of the substrate of the integrated circuit.Type: ApplicationFiled: November 4, 2015Publication date: May 4, 2017Applicant: Texas Instruments IncorporatedInventors: Keith Ryan Green, Rajni J. Aggarwal, Ajit Sharma
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Patent number: 9548298Abstract: An integrated circuit includes an NMOS transistor, a PMOS transistor and a vertical bipolar transistor. The vertical bipolar transistor has an intrinsic base with a band barrier at least 25 meV high at a surface boundary of the intrinsic base, except at an emitter-base junction with an emitter, and except at a base-collector junction with a collector. The intrinsic base may be laterally surrounded by an extrinsic base with a higher dopant density than the intrinsic base, wherein a higher dopant density provides the band barrier at lateral surfaces of the intrinsic base. A gate may be disposed on a gate dielectric layer over a top surface boundary of the intrinsic base adjacent to the emitter. The gate is configured to accumulate the intrinsic base immediately under the gate dielectric layer, providing the band barrier at the top surface boundary of the intrinsic base.Type: GrantFiled: November 16, 2015Date of Patent: January 17, 2017Assignee: TEXAS INSTUMENTS INCORPORATEDInventors: Weidong Tian, YuGuo Wang, Tathagata Chatterjee, Rajni J. Aggarwal
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Patent number: 9536822Abstract: An integrated circuit containing hydrogen permeable dummy vias configured in a linear or rectangular array and symmetrically positioned over a component in the integrated circuit. An integrated circuit containing matching components with identical layouts and hydrogen permeable dummy vias in identical configurations over the matching components. A process of forming an integrated circuit containing matching components with identical layouts and hydrogen permeable dummy vias in identical configurations over the matching components.Type: GrantFiled: October 9, 2009Date of Patent: January 3, 2017Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Scott R. Summerfelt, Rajni J. Aggarwal
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Publication number: 20160247875Abstract: An integrated circuit containing CMOS gates and a counterdoped polysilicon gate material resistor which has a body region that is implanted concurrently with the NSD layers of the NMOS transistors of the CMOS gates and concurrently with the PSD layers of the PMOS transistors of the CMOS gates, and has a resistor silicide block layer over the body region which is formed of separate material from the sidewall spacers on the CMOS gates. A process of forming an integrated circuit containing CMOS gates and a counterdoped polysilicon gate material resistor which implants the body region of the resistor concurrently with the NSD layers of the NMOS transistors of the CMOS gates and concurrently with the PSD layers of the PMOS transistors of the CMOS gates, and forms a resistor silicide block layer over the body region of separate material from the sidewall spacers on the CMOS gates.Type: ApplicationFiled: May 6, 2016Publication date: August 25, 2016Inventors: Rajni J. AGGARWAL, Jau-Yuann YANG