Patents by Inventor Deb Kumar Pal

Deb Kumar Pal 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).

  • Patent number: 10529866
    Abstract: An SOI or PSOI device including a device structure having a plurality of doped semiconductor regions. One or more of the doped semiconductor regions is in electrical communication with one or more electrical terminals. The device further includes an insulator layer located between a bottom surface of the device structure and a handle wafer. The device has an insulator trench structure located between a side surface of the device structure and a lateral semiconductor region located laterally with respect to the device structure. The insulator layer and the insulator trench structure are configured to insulate the device structure from the handle wafer and the lateral semiconductor region, and the insulator trench structure includes a plurality of insulator trenches.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: January 7, 2020
    Assignee: X-FAB SEMICONDUCTOR FOUNDRIES GMBH
    Inventors: Elizabeth Kho Ching Tee, Alexander Dietrich Holke, Steven John Pilkington, Deb Kumar Pal
  • Patent number: 9748383
    Abstract: A Metal Oxide Semiconductor (MOS) transistor comprising: a source; a gate; and a drain, the source, gate and drain being located in or on a well structure of a first doping polarity located in or on a substrate; wherein at least one of the source and the drain comprises a first structure comprising: a first region forming a first drift region, the first region being of a second doping polarity opposite the first doping polarity; a second region of the second doping polarity in or on the first region, the second region being a well region and having a doping concentration which is higher than the doping concentration of the first region; and a third region of the second doping polarity in or on the second region. Due to the presence of the second region the transistor may have a lower ON resistance when compared with a similar transistor which does not have the second region. The breakdown voltage may be influenced only to a small extent.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: August 29, 2017
    Assignee: X-FAB SEMICONDUCTOR FOUNDRIES AG
    Inventors: Elizabeth Ching Tee Kho, Zheng Chao Liu, Deb Kumar Pal, Michael Mee Gouh Tiong, Jian Liu, Kia Yaw Kee
  • Patent number: 9653620
    Abstract: A semiconductor device including a p or p+ doped portion and an n or n+ doped portion separated from the p or p+ doped portion by a semiconductor drift portion. The device further includes an insulating portion provided adjacent the drift portion and at least one of the doped portions in a region where the drift portion and the at least one doped portion meet. The device further includes at least one additional portion, wherein the at least one additional portion is located such that, when the doped portions and the at least one additional portion are biased, the electrical potential lines leave the semiconductor drift portion homogeneously.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: May 16, 2017
    Assignee: X-FAB SEMICONDUCTOR FOUNDRIES AG
    Inventors: Alexander Dietrich Hölke, Deb Kumar Pal, Kia Yaw Kee, Yang Hao
  • Publication number: 20160056305
    Abstract: A semiconductor device including a p or p+ doped portion and an n or n+ doped portion separated from the p or p+ doped portion by a semiconductor drift portion. The device further includes an insulating portion provided adjacent the drift portion and at least one of the doped portions in a region where the drift portion and the at least one doped portion meet. The device further includes at least one additional portion, wherein the at least one additional portion is located such that, when the doped portions and the at least one additional portion are biased, the electrical potential lines leave the semiconductor drift portion homogeneously.
    Type: Application
    Filed: November 4, 2015
    Publication date: February 25, 2016
    Applicant: X-Fab Semiconductor Foundries AG
    Inventors: Alexander Dietrich Holke, Deb Kumar Pal, Kia Yaw Kee, Yang Hao
  • Patent number: 9202937
    Abstract: A semiconductor device comprising: a p or p+ doped portion; an n or n+ doped portion separated from the p or p+ doped portion by a semiconductor drift portion; an insulating portion provided adjacent the drift portion and at least one of the doped portions in a region where the drift portion and said at least one doped portion meet; and at least one additional portion which is arranged for significantly reducing the variation of the electric field strength in said region when a voltage difference is applied between the doped portions.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: December 1, 2015
    Assignee: X-FAB SEMICONDUCTOR FOUNDRIES AG
    Inventors: Alexander Dietrich Hölke, Deb Kumar Pal, Kia Yaw Kee, Hao Yang
  • Patent number: 8970016
    Abstract: A semiconductor device including a p or p+ doped portion and an n or n+ doped portion separated from the p or p+ doped portion by a semiconductor drift portion. The device further includes at least one termination portion provided adjacent to the drift portion. The at least one termination portion comprises a Super Junction structure.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: March 3, 2015
    Assignee: X-FAB Semiconductor Foundries AG
    Inventors: Marina Antoniou, Florin Udrea, Elizabeth Kho Ching Tee, Steven John Pilkington, Deb Kumar Pal, Alexander Dietrich Hölke
  • Patent number: 8841186
    Abstract: The disclosed method of manufacturing (110, 120, 130, 140) a semiconductor device (12) has the steps (112, 114, 116) of: forming at least one wall (33) of a body (44) of the semiconductor device (12) by etching at least one trench (22) for a gate (42) of the semiconductor device (12) into the body (44); and performing a slanted implantation doping (126, 128) into the at least one wall (33) of the body (44), after the etching (112) of the at least one trench (22) and prior to coating the at least one trench (22) with an insulating layer (29).
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: September 23, 2014
    Assignee: X-Fab Semiconductor Foundries AG
    Inventors: Alexander Hoelke, Deb Kumar Pal, Kia Yaw Kee, Yang Hao
  • Patent number: 8759942
    Abstract: The present invention provides semiconductor devices and methods for fabricating the same, in which superior dielectric termination of drift regions is accomplished by a plurality of intersecting trenches with intermediate semiconductor islands. Thus, a deep trench arrangement can be achieved without being restricted by the overall width of the isolation structure.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: June 24, 2014
    Assignee: X-FAB Semiconductor Foundries AG
    Inventors: Alexander Hoelke, Deb Kumar Pal, Pei Shan Chua, Gopalakrishnan Kulathu Sankar, Kia Yaw Kee, Yang Hao, Uta Kuniss
  • Publication number: 20130320511
    Abstract: A semiconductor device including a p or p+ doped portion and an n or n+ doped portion separated from the p or p+ doped portion by a semiconductor drift portion. The device further includes at least one termination portion provided adjacent to the drift portion. The at least one termination portion comprises a Super Junction structure.
    Type: Application
    Filed: June 1, 2012
    Publication date: December 5, 2013
    Applicant: X-FAB SEMICONDUCTOR FOUNDRIES AG
    Inventors: Elizabeth Kho Ching Tee, Alexander Dietrich Hölke, Steven John Pilkington, Deb Kumar Pal, Marina Antoniou, Florin Udrea
  • Publication number: 20130320485
    Abstract: An SOI or PSOI device including a device structure having a plurality of doped semiconductor regions. One or more of the doped semiconductor regions is in electrical communication with one or more electrical terminals. The device further includes an insulator layer located between a bottom surface of the device structure and a handle wafer. The device has an insulator trench structure located between a side surface of the device structure and a lateral semiconductor region located laterally with respect to the device structure. The insulator layer and the insulator trench structure are configured to insulate the device structure from the handle wafer and the lateral semiconductor region, and the insulator trench structure includes a plurality of insulator trenches.
    Type: Application
    Filed: May 30, 2012
    Publication date: December 5, 2013
    Applicant: X-FAB SEMICONDUCTOR FOUNDRIES AG
    Inventors: Elizabeth Kho Ching Tee, Alexander Dietrich Hölke, Steven John Pilkington, Deb Kumar Pal
  • Publication number: 20130093015
    Abstract: A high voltage metal oxide semiconductor (HVMOS) transistor (1) comprises a drift region (8) comprising a material having a mobility which is higher than a mobility of Si. There is also provided a method of manufacturing said transistor, the method comprising forming a drift region comprising a material having a mobility which is higher than a mobility of Silicon. The material can be a Si—Ge strained material. The on- resistance is reduced compared to a transistor with a drift region made of Si, so that the trade-off between breakdown voltage and on-resistance is improved.
    Type: Application
    Filed: March 1, 2010
    Publication date: April 18, 2013
    Applicant: X-FAB SEMICONDUCTOR FOUNDRIES AG
    Inventors: Deb Kumar Pal, Elizabeth Ching Tee Kho, Alexander Dietrich Hölke
  • Publication number: 20120319193
    Abstract: The disclosed method of manufacturing (110, 120, 130, 140) a semiconductor device (12) has the steps (112, 114, 116) of: forming at least one wall (33) of a body (44) of the semiconductor device (12) by etching at least one trench (22) for a gate (42) of the semiconductor device (12) into the body (44); and performing a slanted implantation doping (126, 128) into the at least one wall (33) of the body (44), after the etching (112) of the at least one trench (22) and prior to coating the at least one trench (22) with an insulating layer (29).
    Type: Application
    Filed: March 4, 2010
    Publication date: December 20, 2012
    Inventors: Alexander Hoelke, Deb Kumar Pal, Kia Yaw Kee, Yang Hao
  • Publication number: 20120161276
    Abstract: The present invention provides semiconductor devices and methods for fabricating the same, in which superior dielectric termination of drift regions is accomplished by a plurality of intersecting trenches with intermediate semiconductor islands. Thus, a deep trench arrangement can be achieved without being restricted by the overall width of the isolation structure.
    Type: Application
    Filed: May 22, 2009
    Publication date: June 28, 2012
    Inventors: Deb Kumar Pal, Alexander Hoelke, Pei Shan Chua, Gopalakrishnan Kulathu Sankar, Kia Yaw Kee, Yang Hao, Uta Kuniss
  • Publication number: 20120126377
    Abstract: A semiconductor device comprising: a p or p+ doped portion; an n or n+ doped portion separated from the p or p+ doped portion by a semiconductor drift portion; an insulating portion provided adjacent the drift portion and at least one of the doped portions in a region where the drift portion and said at least one doped portion meet; and at least one additional portion which is arranged for significantly reducing the variation of the electric field strength in said region when a voltage difference is applied between the doped portions.
    Type: Application
    Filed: May 14, 2010
    Publication date: May 24, 2012
    Applicant: X-FAB SEMICONDUCTOR FOUNDRIES AG
    Inventors: Alexander Dietrich Holke, Deb Kumar Pal, Kia Yaw Kee, Hao Yang
  • Publication number: 20110306045
    Abstract: A strong association between variants in Elongator Protein Complex 4, (ELP4) (specifically single nucleotide polymorphisms, SNPs) at the 11p13 locus on chromosome 11 and the centrotemporal sharp wave trait (CTS) has been discovered, which association has diagnostic significance for rolandic epilepsy. It has further been discovered that the 11p13 locus has a pleiotropic role in the development of speech motor praxis and CTS, which supports a neurodevelopmental origin for classic rolandic epilepsy (RE).
    Type: Application
    Filed: December 21, 2009
    Publication date: December 15, 2011
    Applicants: THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK, THE HOSPITAL FOR SICK CHILDREN
    Inventors: Deb Kumar Pal, Lisa Joanna Strug
  • Publication number: 20110198690
    Abstract: A Metal Oxide Semiconductor (MOS) transistor comprising: a source; a gate; and a drain, the source, gate and drain being located in or on a well structure of a first doping polarity located in or on a substrate; wherein at least one of the source and the drain comprises a first structure comprising: a first region forming a first drift region, the first region being of a second doping polarity opposite the first doping polarity; a second region of the second doping polarity in or on the first region, the second region being a well region and having a doping concentration which is higher than the doping concentration of the first region; and a third region of the second doping polarity in or on the second region. Due to the presence of the second region the transistor may have a lower ON resistance when compared with a similar transistor which does not have the second region. The breakdown voltage may be influenced only to a small extent.
    Type: Application
    Filed: February 12, 2009
    Publication date: August 18, 2011
    Inventors: Yong Hai Hu, Elizabeth Ching Tee Kho, Zheng Chao Liu, Deb Kumar Pal, Michael Mee Gouh Tiong, Jian Liu, Kia Yaw Kee, William Siang Lim Lau