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).
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Patent number: 10529866Abstract: 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: GrantFiled: May 30, 2012Date of Patent: January 7, 2020Assignee: X-FAB SEMICONDUCTOR FOUNDRIES GMBHInventors: Elizabeth Kho Ching Tee, Alexander Dietrich Holke, Steven John Pilkington, Deb Kumar Pal
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Patent number: 9748383Abstract: 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: GrantFiled: February 12, 2009Date of Patent: August 29, 2017Assignee: X-FAB SEMICONDUCTOR FOUNDRIES AGInventors: Elizabeth Ching Tee Kho, Zheng Chao Liu, Deb Kumar Pal, Michael Mee Gouh Tiong, Jian Liu, Kia Yaw Kee
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Patent number: 9653620Abstract: 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: GrantFiled: November 4, 2015Date of Patent: May 16, 2017Assignee: X-FAB SEMICONDUCTOR FOUNDRIES AGInventors: Alexander Dietrich Hölke, Deb Kumar Pal, Kia Yaw Kee, Yang Hao
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Publication number: 20160056305Abstract: 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: ApplicationFiled: November 4, 2015Publication date: February 25, 2016Applicant: X-Fab Semiconductor Foundries AGInventors: Alexander Dietrich Holke, Deb Kumar Pal, Kia Yaw Kee, Yang Hao
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Patent number: 9202937Abstract: 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: GrantFiled: May 14, 2010Date of Patent: December 1, 2015Assignee: X-FAB SEMICONDUCTOR FOUNDRIES AGInventors: Alexander Dietrich Hölke, Deb Kumar Pal, Kia Yaw Kee, Hao Yang
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Patent number: 8970016Abstract: 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: GrantFiled: June 1, 2012Date of Patent: March 3, 2015Assignee: X-FAB Semiconductor Foundries AGInventors: Marina Antoniou, Florin Udrea, Elizabeth Kho Ching Tee, Steven John Pilkington, Deb Kumar Pal, Alexander Dietrich Hölke
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Patent number: 8841186Abstract: 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: GrantFiled: March 4, 2010Date of Patent: September 23, 2014Assignee: X-Fab Semiconductor Foundries AGInventors: Alexander Hoelke, Deb Kumar Pal, Kia Yaw Kee, Yang Hao
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Patent number: 8759942Abstract: 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: GrantFiled: May 22, 2009Date of Patent: June 24, 2014Assignee: X-FAB Semiconductor Foundries AGInventors: Alexander Hoelke, Deb Kumar Pal, Pei Shan Chua, Gopalakrishnan Kulathu Sankar, Kia Yaw Kee, Yang Hao, Uta Kuniss
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Publication number: 20130320511Abstract: 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: ApplicationFiled: June 1, 2012Publication date: December 5, 2013Applicant: X-FAB SEMICONDUCTOR FOUNDRIES AGInventors: Elizabeth Kho Ching Tee, Alexander Dietrich Hölke, Steven John Pilkington, Deb Kumar Pal, Marina Antoniou, Florin Udrea
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Publication number: 20130320485Abstract: 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: ApplicationFiled: May 30, 2012Publication date: December 5, 2013Applicant: X-FAB SEMICONDUCTOR FOUNDRIES AGInventors: Elizabeth Kho Ching Tee, Alexander Dietrich Hölke, Steven John Pilkington, Deb Kumar Pal
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Publication number: 20130093015Abstract: 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: ApplicationFiled: March 1, 2010Publication date: April 18, 2013Applicant: X-FAB SEMICONDUCTOR FOUNDRIES AGInventors: Deb Kumar Pal, Elizabeth Ching Tee Kho, Alexander Dietrich Hölke
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Publication number: 20120319193Abstract: 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: ApplicationFiled: March 4, 2010Publication date: December 20, 2012Inventors: Alexander Hoelke, Deb Kumar Pal, Kia Yaw Kee, Yang Hao
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Publication number: 20120161276Abstract: 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: ApplicationFiled: May 22, 2009Publication date: June 28, 2012Inventors: Deb Kumar Pal, Alexander Hoelke, Pei Shan Chua, Gopalakrishnan Kulathu Sankar, Kia Yaw Kee, Yang Hao, Uta Kuniss
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Publication number: 20120126377Abstract: 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: ApplicationFiled: May 14, 2010Publication date: May 24, 2012Applicant: X-FAB SEMICONDUCTOR FOUNDRIES AGInventors: Alexander Dietrich Holke, Deb Kumar Pal, Kia Yaw Kee, Hao Yang
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Publication number: 20110306045Abstract: 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: ApplicationFiled: December 21, 2009Publication date: December 15, 2011Applicants: THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK, THE HOSPITAL FOR SICK CHILDRENInventors: Deb Kumar Pal, Lisa Joanna Strug
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Publication number: 20110198690Abstract: 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: ApplicationFiled: February 12, 2009Publication date: August 18, 2011Inventors: 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