Patents by Inventor Purakh Raj Verma

Purakh Raj Verma 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: 20240136312
    Abstract: A semiconductor device includes a first wafer having a deep trench capacitor and a second wafer bonded to the first wafer, in which the second wafer includes a first active device on a first silicon-on-insulator (SOI) substrate and a first metal interconnection connected to the first active device and the deep trench capacitor. The first wafer further includes the deep trench capacitor disposed in a substrate, a first inter-layer dielectric (ILD) layer on the deep trench capacitor, a first inter-metal dielectric (IMD) layer on the first ILD layer, and a second metal interconnection in the first ILD layer and the first IMD layer.
    Type: Application
    Filed: November 17, 2022
    Publication date: April 25, 2024
    Applicant: UNITED MICROELECTRONICS CORP.
    Inventors: Purakh Raj Verma, Ching-Yang Wen, XINGXING CHEN
  • Patent number: 11955292
    Abstract: A structure of capacitors connected in parallel includes a substrate. A trench embedded in the substrate. Numerous electrode layers respectively conformally fill in and cover the trench. The electrode layers are formed of numerous nth electrode layers, wherein n is a positive integer from 1 to M, and M is not less than 3. The nth electrode layer with smaller n is closer to the sidewall of the trench. When n equals to M, the Mth electrode layer fills in the center of the trench, and the top surface of the Mth electrode is aligned with the top surface of the substrate. A capacitor dielectric layer is disposed between the adjacent electrode layers. A first conductive plug contacts the nth electrode layer with odd-numbered n. A second conductive plug contacts the nth electrode layer with even-numbered n.
    Type: Grant
    Filed: November 15, 2022
    Date of Patent: April 9, 2024
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Purakh Raj Verma, Ching-Yang Wen, Xingxing Chen, Chao Jin
  • Patent number: 11929213
    Abstract: A structure of capacitors connected in parallel includes a substrate. A trench embedded in the substrate. Numerous electrode layers respectively conformally fill in and cover the trench. The electrode layers are formed of numerous nth electrode layers, wherein n is a positive integer from 1 to M, and M is not less than 3. The nth electrode layer with smaller n is closer to the sidewall of the trench. When n equals to M, the Mth electrode layer fills in the center of the trench, and the top surface of the Mth electrode is aligned with the top surface of the substrate. A capacitor dielectric layer is disposed between the adjacent electrode layers. A first conductive plug contacts the nth electrode layer with odd-numbered n. A second conductive plug contacts the nth electrode layer with even-numbered n.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: March 12, 2024
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Purakh Raj Verma, Ching-Yang Wen, Xingxing Chen, Chao Jin
  • Patent number: 11923373
    Abstract: A semiconductor structure includes a semiconductor on insulator (SOI) substrate, a first electrically conductive structure, and a second electrically conductive structure. The SOI substrate includes a base substrate, a buried insulation layer disposed on the base substrate, a semiconductor layer disposed on the buried insulation layer, and a trap rich layer disposed between the buried insulation layer and the base substrate. At least a part of the first electrically conductive structure and at least a part of the second electrically conductive structure are disposed in the trap rich layer. A part of the trap rich layer is disposed between the first electrically conductive structure and the second electrically conductive structure. The first electrically conductive structure, the second electrically conductive structure, and the trap rich layer disposed between the first electrically conductive structure and the second electrically conductive structure are at least a portion of an anti-fuse structure.
    Type: Grant
    Filed: October 14, 2021
    Date of Patent: March 5, 2024
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Bo Tao, Li Wang, Ching-Yang Wen, Purakh Raj Verma, Zhibiao Zhou, Dong Yin, Gang Ren, Jian Xie
  • Publication number: 20240063282
    Abstract: A semiconductor device includes a substrate having an active area, a first gate line extending along a first direction on the active area, a first gate line extension adjacent to the first gate line and outside the active area, a second gate line extending along the first direction on the active area and adjacent to the first gate line, and a second gate line extension adjacent to the second gate line and outside the active area. Preferably, the active area includes a first indentation and a second indentation, in which the first gate line extension overlaps the first indentation and the second gate line extension overlaps the first indentation.
    Type: Application
    Filed: September 21, 2022
    Publication date: February 22, 2024
    Applicant: UNITED MICROELECTRONICS CORP.
    Inventors: Purakh Raj Verma, Su Xing, JINYU LIAO
  • Publication number: 20240047266
    Abstract: A method of forming a protective layer utilized in a silicon remove process includes bonding a first wafer to a second wafer, wherein the first wafer comprises a first silicon substrate with a first device structure disposed thereon and the second wafer comprises a second silicon substrate with a second device structure disposed thereon. After that, a first trim process is performed to thin laterally an edge of the first wafer and an edge of the second device structure. After the first trim process, a protective layer is formed to cover a back side of the second silicon substrate. After forming the protective layer, a silicon remove process is performed to remove only the first silicon substrate.
    Type: Application
    Filed: August 4, 2022
    Publication date: February 8, 2024
    Applicant: UNITED MICROELECTRONICS CORP.
    Inventors: Chia-Liang Liao, Chee Hau Ng, Ching-Yang Wen, Purakh Raj Verma
  • Publication number: 20240038693
    Abstract: A semiconductor structure including chips is provided. The chips are arranged in a stack. Each of the chips includes a radio frequency (RF) device. Two adjacent chips are bonded to each other. The RF devices in the chips are connected in parallel. Each of the RF devices includes a gate, a source region, and a drain region. The gates in the RF devices connected in parallel have the same shape and the same size. The source regions in the RF devices connected in parallel have the same shape and the same size. The drain regions in the RF devices connected in parallel have the same shape and the same size.
    Type: Application
    Filed: October 5, 2023
    Publication date: February 1, 2024
    Applicant: United Microelectronics Corp.
    Inventors: Purakh Raj Verma, Su Xing
  • Publication number: 20240038832
    Abstract: A semiconductor device includes a substrate, a high-Q capacitor, an ultra high density capacitor, and an interconnection. At least one trench is formed in the substrate. The high-Q capacitor is disposed on a surface of the substrate, and includes a bottom electrode, an upper electrode located on the bottom electrode, and a first dielectric layer located between the upper and bottom electrodes. The ultra high density capacitor is disposed on the trench of the substrate, and includes a first electrode conformally deposited in the trench, a second electrode located on the first electrode, and a second dielectric layer located between the first and second electrodes. The interconnection connects one of the upper electrode and the bottom electrode to one of the first electrode and the second electrode, and connects the other of the upper electrode and the bottom electrode to the other of the first electrode and the second electrode.
    Type: Application
    Filed: August 21, 2022
    Publication date: February 1, 2024
    Applicant: United Microelectronics Corp.
    Inventors: Purakh Raj Verma, Ching-Yang Wen, Chee-Hau Ng, Chin-Wei Ho
  • Patent number: 11881529
    Abstract: A method of fabricating a semiconductor device is provided. First, a semiconductor structure is provided, and the semiconductor structure includes a buried dielectric layer, a first gate structure disposed on a front-side of the buried dielectric layer, and a first source/drain region and a second source/drain region disposed between the buried dielectric layer and the first gate structure. Then, a trench is formed in the buried dielectric layer. Afterwards, a conductive layer is formed on the buried dielectric layer and in the trench. Finally, the conductive layer is patterned.
    Type: Grant
    Filed: September 5, 2022
    Date of Patent: January 23, 2024
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Purakh Raj Verma, Ching-Yang Wen, Li Wang, Kai Cheng
  • Patent number: 11848253
    Abstract: A semiconductor structure with an air gap includes a dielectric stack having a first dielectric layer on a substrate, a second dielectric layer on the first dielectric layer, and a third dielectric layer on the second dielectric layer. A first conductive layer and a second conductive layer are disposed in the dielectric stack. The first conductive layer and the second conductive layer are coplanar. A cross-like-shaped air gap is disposed in the dielectric stack between the first and second conductive layers. An oxide layer is disposed on a sidewall of the second dielectric layer within the cross-like-shaped air gap.
    Type: Grant
    Filed: November 8, 2021
    Date of Patent: December 19, 2023
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Ching-Pin Hsu, Chih-Jung Wang, Chu-Chun Chang, Kuo-Yuh Yang, Chia-Huei Lin, Purakh Raj Verma
  • Publication number: 20230299174
    Abstract: A semiconductor structure includes following components. A first substrate has a first surface and a second surface opposite to each other. An HBT device is located on the first substrate and includes a collector, a base, and an emitter. A first interconnect structure is electrically connected to the base, located on the first surface, and extends to the second surface. A second interconnect structure is electrically connected to the emitter, located on the first surface, and extends to the second surface. A third interconnect structure is located on the second surface and electrically connected to the collector. An MOS transistor device is located on a second substrate and includes a gate, a first source and drain region, and a second source and drain region. Interconnect structures on the second substrate electrically connect the base to the first source and drain region and electrically connect the emitter to the gate.
    Type: Application
    Filed: April 20, 2022
    Publication date: September 21, 2023
    Applicant: United Microelectronics Corp.
    Inventors: Purakh Raj Verma, Su Xing
  • Publication number: 20230268246
    Abstract: A semiconductor structure includes a glass substrate and a device structure. The glass substrate includes a glass layer, a heat dissipation layer and a silicon nitride layer stacked from bottom to top. The device structure includes at least one semiconductor device integrated in a device layer situated over the silicon nitride layer of the glass substrate. Or, the glass substrate includes a glass layer and a silicon nitride layer stacked from bottom to top. The device structure includes at least one semiconductor device integrated in a device layer, and a heat dissipation layer is stacked on the device layer, wherein the heat dissipation layer is bonded with the silicon nitride layer of the glass substrate. The present invention also provides a method of wafer bonding for manufacturing said semiconductor structure.
    Type: Application
    Filed: April 18, 2023
    Publication date: August 24, 2023
    Applicant: UNITED MICROELECTRONICS CORP.
    Inventors: Chia-Liang Liao, Purakh Raj Verma, Ching-Yang Wen, Chee Hau Ng
  • Publication number: 20230268375
    Abstract: A method for fabricating an inductor module includes steps of: providing a substrate; forming a first inter-level dielectric layer on the substrate; forming a plurality of second inter-level dielectric layers on the first inter-level dielectric layer; forming a trench penetrating at least two of the second inter-level dielectric layers; and forming a first metal layer in the trench.
    Type: Application
    Filed: April 28, 2023
    Publication date: August 24, 2023
    Inventors: Purakh Raj Verma, Su Xing, Shyam Parthasarathy, XIAO YUAN ZHI
  • Patent number: 11721772
    Abstract: A varactor structure includes a substrate. A first and second gate structure are disposed on the substrate. The first and second gate structures each include a base portion and a plurality of line portions connected thereto. The line portions of each of the first and second gate structures is alternately arranged. A meander diffusion region is formed in the substrate and surrounds the line portions. A first set of contact plugs is planned with at least two columns or rows and disposed on the base portions of the first and second gate structures. A second set of contact plugs is planned with at least two columns or rows and disposed on the meander diffusion region. A first conductive layer is disposed on a top end of the first set of contact plugs. A second conductive layer is disposed on a top end of the second set of contact plugs.
    Type: Grant
    Filed: June 27, 2022
    Date of Patent: August 8, 2023
    Assignee: United Microelectronics Corp.
    Inventors: Purakh Raj Verma, Su Xing
  • Patent number: 11721757
    Abstract: A LDMOS device includes a semiconductor layer on an insulation layer and a ring shape gate on the semiconductor layer. The ring shape gate includes a first gate portion, a second gate portion, and two third gate portions connecting the first gate portion and the second gate portion. The semiconductor device further includes a first drain region and a second drain region formed in the semiconductor layer at two sides of the ring shape gate, a plurality of source regions formed in the semiconductor layer surrounded by the ring shape gate, a plurality of body contact regions formed in the semiconductor layer and arranged between the source regions, and a first body implant region and a second body implant region formed in the semiconductor layer, respectively underlying part of the first gate portion and part of the second gate portion, and being connected by the body contact regions.
    Type: Grant
    Filed: August 2, 2021
    Date of Patent: August 8, 2023
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Purakh Raj Verma, Chia-Huei Lin, Kuo-Yuh Yang
  • Patent number: 11715709
    Abstract: A radiofrequency device includes a buried insulation layer, a transistor, a contact structure, a connection bump, an interlayer dielectric layer, and a mold compound layer. The buried insulation layer has a first side and a second side opposite to the first side in a thickness direction of the buried insulation layer. The transistor is disposed on the first side of the buried insulation layer. The contact structure penetrates the buried insulation layer and is electrically connected with the transistor. The connection bump is disposed on the second side of the buried insulation layer and electrically connected with the contact structure. The interlayer dielectric layer is disposed on the first side of the buried insulation layer and covers the transistor. The mold compound layer is disposed on the interlayer dielectric layer. The mold compound layer may be used to improve operation performance and reduce manufacturing cost of the radiofrequency device.
    Type: Grant
    Filed: April 7, 2022
    Date of Patent: August 1, 2023
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Purakh Raj Verma, Wen-Shen Li, Ching-Yang Wen
  • Publication number: 20230230938
    Abstract: A method for fabricating an integrated circuit device is disclosed. A substrate is provided and an integrated circuit area is formed on the substrate. The integrated circuit area includes a dielectric stack. A seal ring is formed in the dielectric stack and around a periphery of the integrated circuit area. A trench is formed around the seal ring and exposing a sidewall of the dielectric stack. The trench is formed within a scribe line. A moisture blocking layer is formed on the sidewall of the dielectric stack, thereby sealing a boundary between two adjacent dielectric films in the dielectric stack.
    Type: Application
    Filed: March 19, 2023
    Publication date: July 20, 2023
    Applicant: UNITED MICROELECTRONICS CORP.
    Inventors: Purakh Raj Verma, Kuo-Yuh Yang, Chia-Huei Lin, Chu-Chun Chang
  • Patent number: 11676992
    Abstract: An inductor module and a method for fabricating the same are disclosed. The inductor module includes a substrate, a first inter-level dielectric layer, a plurality of second inter-level dielectric layers, a trench, and a first metal layer. The first inter-level dielectric layer is disposed on the substrate. The second inter-level dielectric layers are sequentially stacked on the first inter-level dielectric layer. The trench is disposed to penetrate at least two of the second inter-level dielectric layers. The first metal layer is disposed in the trench. The first metal layer has a top side surface and a bottom side surface opposite to each other. The top side surface is coplanar with an upper surface of the trench in the second inter-level dielectric layers. The bottom side surface is coplanar with a bottom surface of the trench in the second inter-level dielectric layers.
    Type: Grant
    Filed: November 26, 2020
    Date of Patent: June 13, 2023
    Assignee: UNITED MICROELECTRONICS CORPORATION
    Inventors: Purakh Raj Verma, Su Xing, Shyam Parthasarathy, Xiao Yuan Zhi
  • Patent number: 11670567
    Abstract: A semiconductor structure includes a glass substrate and a device wafer. The glass substrate includes a glass layer, a heat dissipation layer and a silicon nitride layer stacked from bottom to top. The device wafer includes at least one semiconductor device integrated in a device layer situated over the silicon nitride layer of the glass substrate. Or, the glass substrate includes a glass layer and a silicon nitride layer stacked from bottom to top. The device wafer includes at least one semiconductor device integrated in a device layer, and a heat dissipation layer is stacked on the device layer, wherein the heat dissipation layer is bonded with the silicon nitride layer of the glass substrate. The present invention also provides a method of wafer bonding for manufacturing said semiconductor structure.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: June 6, 2023
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Chia-Liang Liao, Purakh Raj Verma, Ching-Yang Wen, Chee Hau Ng
  • Patent number: 11658118
    Abstract: A semiconductor device includes a first gate line and a second gate line extending along a first direction, a third gate line extending along a second direction and between and directly contacting the first gate line and the second gate line, a drain region adjacent to one side of the third gate line, a fourth gate line extending along the second direction and between and directly contacting the first gate line and the second gate line, and a first metal interconnection extending along the second direction between the third gate line and the fourth gate line. Preferably, the third gate line includes a first protrusion and the fourth gate line includes a second protrusion.
    Type: Grant
    Filed: November 8, 2021
    Date of Patent: May 23, 2023
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Purakh Raj Verma, Chia-Huei Lin, Kuo-Yuh Yang