Patents by Inventor Ralf Siemieniec
Ralf Siemieniec 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: 8088660Abstract: A method for producing an electrode in a semiconductor layer includes providing a substrate with a first surface and a second surface, forming a first trench having sidewalls and extending into the substrate from the first surface and forming a plug in the first trench. The method further includes reducing a thickness of the semiconductor substrate by removing semiconductor material beginning at the first surface so as to at least partially uncover sidewalls of the plug and forming a semiconductor layer on the semiconductor substrate, the semiconductor layer at least partially covering the uncovered sidewalls of the plug, and having an upper surface.Type: GrantFiled: December 15, 2010Date of Patent: January 3, 2012Assignee: Infineon Technologies Austria AGInventors: Ralf Siemieniec, Martin Henning Vielemeyer, Oliver Blank
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Patent number: 8080858Abstract: A Semiconductor component having a space saving edge structure is disclosed. One embodiment provides a first side, a second side, an inner region, an edge region adjoining the inner region in a lateral direction of the semiconductor body, and a first semiconductor layer extending across the inner region and the edge region and having a basic doping of a first conductivity type. At least one active component zone of a second conductivity type, which is complementary to the first conductivity type, is disposed in the inner region in the first semiconductor layer. An edge structure is disposed in the edge region and includes at least one trench extending from the first side into the semiconductor body. An edge electrode is disposed in the trench, a dielectric layer is disposed in the trench between the edge electrode and the semiconductor body, a first edge zone of the second conductivity type adjoin the trench and are at least partially disposed below the trench.Type: GrantFiled: August 3, 2007Date of Patent: December 20, 2011Assignee: Infineon Technologies Austria AGInventors: Franz Hirler, Ralf Siemieniec, Christian Geissler
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Patent number: 8044459Abstract: In one embodiment, a field effect transistor has a semiconductor body, a drift region of a first conductivity type and a gate electrode. At least one trench extends into the drift region. A field plate is arranged at least in a portion of the at least one trench. A dielectric material at least partially surrounds both the gate electrode and the field plate. The field plate includes a first semiconducting material.Type: GrantFiled: November 10, 2008Date of Patent: October 25, 2011Assignee: Infineon Technologies Austria AGInventors: Franz Hirler, Walter Rieger, Andrew Wood, Mathias Born, Ralf Siemieniec, Jan Ropohl, Martin Poelzl, Oliver Blank, Uli Hiller, Oliver Haeberlen, Rudolf Zelsacher, Maximilian Roesch, Joachim Krumrey
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Publication number: 20110227095Abstract: A semiconductor device is disclosed. One embodiment includes a first semiconductor die having a normally-off transistor. In a second semiconductor die a plurality of transistor cells of a normally-on transistor are formed, wherein one of a source terminal/drain terminal of the normally-on transistor is electrically coupled to a gate terminal of the normally-on transistor and the other one the source terminal/drain terminal of the normally-off transistor is electrically coupled to one of a source terminal/drain terminal of the normally-on transistor. The second semiconductor die includes a gate resistor electrically coupled between the gate terminal of the normally-off transistor and respective gates of the plurality of transistor cells. A voltage clamping element is electrically coupled between the gate terminal and the one of the source terminal/drain terminal of the normally-on transistor.Type: ApplicationFiled: March 19, 2010Publication date: September 22, 2011Applicant: Infineon Technologies Austria AGInventors: Michael Treu, Ralf Siemieniec
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Publication number: 20110133272Abstract: A semiconductor device includes a source, a drain, and a gate configured to selectively enable a current to pass between the source and the drain. The semiconductor device includes a drift zone between the source and the drain and a first field plate adjacent the drift zone. The semiconductor device includes a dielectric layer electrically isolating the first field plate from the drift zone and charges within the dielectric layer close to an interface of the dielectric layer adjacent the drift zone.Type: ApplicationFiled: December 9, 2009Publication date: June 9, 2011Applicant: INFINEON TECHNOLOGIES AUSTRIA AGInventors: Anton Mauder, Rudolf Berger, Franz Hirler, Ralf Siemieniec, Hans-Joachim Schulze
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Publication number: 20110076817Abstract: An integrated circuit device with a semiconductor body and a method for the production of a semiconductor device a provided. The semiconductor body comprises a cell field with a drift zone of a first conduction type. In addition, the semiconductor device comprises an edge region surrounding the cell field. Field plates with a trench gate structure are arranged in the cell field, and an edge trench surrounding the cell field is provided in the edge region. The front side of the semiconductor body is in the edge region provided with an edge zone of a conduction type complementing the first conduction type with doping materials of body zones of the cell field. The edge zone of the complementary conduction type extends both within and outside the edge trench.Type: ApplicationFiled: December 7, 2010Publication date: March 31, 2011Applicant: Infineon Technologies Austria AGInventors: Uli Hiller, Oliver Blank, Ralf Siemieniec, Maximilian Roesch
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Patent number: 7880226Abstract: An integrated circuit device with a semiconductor body and a method for the production of a semiconductor device a provided. The semiconductor body comprises a cell field with a drift zone of a first conduction type. In addition, the semiconductor device comprises an edge region surrounding the cell field. Field plates with a trench gate structure are arranged in the cell field, and an edge trench surrounding the cell field is provided in the edge region. The front side of the semiconductor body is in the edge region provided with an edge zone of a conduction type complementing the first conduction type with doping materials of body zones of the cell field. The edge zone of the complementary conduction type extends both within and outside the edge trench.Type: GrantFiled: January 25, 2008Date of Patent: February 1, 2011Assignee: Infineon Technologies Austria AGInventors: Uli Hiller, Oliver Blank, Ralf Siemieniec, Maximilian Roesch
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Patent number: 7859051Abstract: The application relates to a semiconductor device made of silicon with regionally reduced band gap and a process for the production of same. One embodiment provides a semiconductor device including a body zone, a drain zone and a source zone. A gate extends between the source zone and the drain zone. A reduced band gap region is provided in a region of the body zone, made of at least ternary compound semiconductor material.Type: GrantFiled: August 19, 2008Date of Patent: December 28, 2010Assignee: Infineon Technologies Austria AGInventors: Ralf Siemieniec, Christian Foerster, Joachim Krumrey, Franz Hirler
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Patent number: 7750397Abstract: A semiconductor component including compensation zones and discharge structures for the compensation zones. One embodiment provides a drift zone of a first conduction type, at least one compensation zone of a second conduction type, complementary to the first conduction type, the at least one compensation zone being arranged in the drift zone, at least one discharge structure which is arranged between the at least one compensation zone and a section of the drift zone that surrounds the compensation zone or in the compensation zone and designed to enable a charge carrier exchange between the compensation zone and the drift zone if a potential difference between an electrical potential of the compensation zone and an electrical potential of the section of the drift zone that surrounds the compensation zone is greater than a threshold value predetermined by the construction and/or the positioning of the discharge structure.Type: GrantFiled: April 18, 2008Date of Patent: July 6, 2010Assignee: Infineon Technologies Austria AGInventors: Franz Hirler, Ralf Siemieniec, Ilja Pawel
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Publication number: 20100167509Abstract: A method for producing a buried n-doped semiconductor zone in a semiconductor body. In one embodiment, the method includes producing an oxygen concentration at least in the region to be doped in the semiconductor body. The semiconductor body is irradiated via one side with nondoping particles for producing defects in the region to be doped. A thermal process is carried out. The invention additionally relates to a semiconductor component with a field stop zone.Type: ApplicationFiled: March 8, 2010Publication date: July 1, 2010Applicant: INFINEON TECHNOLOGIES AGInventors: Hans-Joachim Schulze, Josef Lutz, Franz-Josef Niedernostheide, Ralf Siemieniec
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Publication number: 20100117144Abstract: In one embodiment, a field effect transistor has a semiconductor body, a drift region of a first conductivity type and a gate electrode. At least one trench extends into the drift region. A field plate is arranged at least in a portion of the at least one trench. A dielectric material at least partially surrounds both the gate electrode and the field plate. The field plate includes a first semiconducting material.Type: ApplicationFiled: November 10, 2008Publication date: May 13, 2010Applicant: Infineon Technologies Austria AGInventors: Franz Hirler, Walter Rieger, Andrew Wood, Mathias Born, Ralf Siemieniec, Jan Ropohl, Martin Poelzl, Oliver Blank, Uli Hiller, Oliver Haeberlen, Rudolf Zelsacher, Maximilian Roesch, Joachim Krumrey
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Patent number: 7675108Abstract: A method for producing a buried n-doped semiconductor zone in a semiconductor body. In one embodiment, the method includes producing an oxygen concentration at least in the region to be doped in the semiconductor body. The semiconductor body is irradiated via one side with nondoping particles for producing defects in the region to be doped. A thermal process is carried out. The invention additionally relates to a semiconductor component with a field stop zone.Type: GrantFiled: August 11, 2005Date of Patent: March 9, 2010Assignee: Infineon Technologies AGInventors: Hans-Joachim Schulze, Josef Lutz, Franz-Josef Niedernostheide, Ralf Siemieniec
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Publication number: 20100044720Abstract: The application relates to a semiconductor device made of silicon with regionally reduced band gap and a process for the production of same. One embodiment provides a semiconductor device including a body zone, a drain zone and a source zone. A gate extends between the source zone and the drain zone. A reduced band gap region is provided in a region of the body zone, made of at least ternary compound semiconductor material.Type: ApplicationFiled: August 19, 2008Publication date: February 25, 2010Applicant: Infineon Technologies Austria AGInventors: Ralf Siemieniec, Christian Foerster, Joachim Krumrey, Franz Hirler
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Patent number: 7652325Abstract: The invention relates to a semiconductor component, which comprises a semiconductor body having a first and a second terminal zone of a first conduction type (n), a channel zone of a second conduction type (p), which is short circuited with the second terminal zone, a drift zone of the first conduction type (n) with weaker doping than the terminal zones, which drift zone is formed between the channel zone and the first terminal zone, the channel zone being formed between the drift zone and the second terminal zone, a control electrode, formed so that it is insulated from the channel zone, for controlling a conductive channel in the channel zone between the second terminal zone and the drift zone, and is distinguished in that a field stop zone of the first conduction type (n) is formed between the first terminal zone and the drift zone, the field stop zone having heavier doping than the drift zone and weaker doping than the first terminal zone, the maximum doping of the field stop zone being at most a factor oType: GrantFiled: February 28, 2006Date of Patent: January 26, 2010Assignee: Infineon Technologies Austria AGInventors: Ralf Siemieniec, Hans-Joachim Schulze
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Patent number: 7615847Abstract: A semiconductor component having a semiconductor body having first and second semiconductor regions of a first conduction type, and a third semiconductor region of a second conduction type, which is complementary to the first conduction type. The second semiconductor region is arranged between the first and third semiconductor region and together with the first semiconductor region forms a first junction region and together with the third semiconductor region forms a second junction region. In the second semiconductor region the dopant concentration is lower than the dopant concentration in the first semiconductor region. The dopant concentration in the second semiconductor region along a straight connecting line between the first and third semiconductor regions is inhomogeneous and has at least one minimum between the first and second junction regions, wherein the minimum is at a distance from the first and second junction regions.Type: GrantFiled: March 23, 2007Date of Patent: November 10, 2009Assignee: Infineon Technologies Austria AGInventors: Markus Zundel, Franz Hirler, Ralf Siemieniec
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Patent number: 7582531Abstract: A method for producing a region of increased doping in an n-doped semiconductor layer which is buried in a semiconductor body of a vertical power transistor and which is arranged between a p-doped body region facing the front side contact of the power transistor and an n-doped substrate facing the rear side contact of the power transistor has the following steps: a) irradiation of at least one part of the surface of the semiconductor body with protons, and b) heat treatment of the semiconductor body.Type: GrantFiled: February 28, 2006Date of Patent: September 1, 2009Assignee: Infineon Technologies Austria AGInventors: Ralf Siemieniec, Hans-Joachim Schulze, Franz Hirler
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Publication number: 20090152624Abstract: An integrated circuit device with a semiconductor body and a method for the production of a semiconductor device a provided. The semiconductor body comprises a cell field with a drift zone of a first conduction type. In addition, the semiconductor device comprises an edge region surrounding the cell field. Field plates with a trench gate structure are arranged in the cell field, and an edge trench surrounding the cell field is provided in the edge region. The front side of the semiconductor body is in the edge region provided with an edge zone of a conduction type complementing the first conduction type with doping materials of body zones of the cell field. The edge zone of the complementary conduction type extends both within and outside the edge trench.Type: ApplicationFiled: January 25, 2008Publication date: June 18, 2009Applicant: INFINEON TECHNOLOGIES AUSTRIA AGInventors: Uli Hiller, Oliver Blank, Ralf Siemieniec, Maximilian Roesch
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Publication number: 20080258208Abstract: A semiconductor component including compensation zones and discharge structures for the compensation zones. One embodiment provides a drift zone of a first conduction type, at least one compensation zone of a second conduction type, complementary to the first conduction type, the at least one compensation zone being arranged in the drift zone, at least one discharge structure which is arranged between the at least one compensation zone and a section of the drift zone that surrounds the compensation zone or in the compensation zone and designed to enable a charge carrier exchange between the compensation zone and the drift zone if a potential difference between an electrical potential of the compensation zone and an electrical potential of the section of the drift zone that surrounds the compensation zone is greater than a threshold value predetermined by the construction and/or the positioning of the discharge structure.Type: ApplicationFiled: April 18, 2008Publication date: October 23, 2008Applicant: Infineon Technologies Austria AGInventors: Franz Hirler, Ralf Siemieniec, Ilja Pawel
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Publication number: 20080230833Abstract: A semiconductor component having a semiconductor body having first and second semiconductor regions of a first conduction type, and a third semiconductor region of a second conduction type, which is complementary to the first conduction type. The second semiconductor region is arranged between the first and third semiconductor region and together with the first semiconductor region forms a first junction region and together with the third semiconductor region forms a second junction region. In the second semiconductor region the dopant concentration is lower than the dopant concentration in the first semiconductor region. The dopant concentration in the second semiconductor region along a straight connecting line between the first and third semiconductor regions is inhomogeneous and has at least one minimum between the first and second junction regions, wherein the minimum is at a distance from the first and second junction regions.Type: ApplicationFiled: March 23, 2007Publication date: September 25, 2008Applicant: Infineon Technologies Austria AGInventors: Markus Zundel, Franz Hirler, Ralf Siemieniec
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Publication number: 20080042172Abstract: A Semiconductor component having a space saving edge structure is disclosed. One embodiment provides a first side, a second side, an inner region, an edge region adjoining the inner region in a lateral direction of the semiconductor body, and a first semiconductor layer extending across the inner region and the edge region and having a basic doping of a first conductivity type. At least one active component zone of a second conductivity type, which is complementary to the first conductivity type, is disposed in the inner region in the first semiconductor layer. An edge structure is disposed in the edge region and includes at least one trench extending from the first side into the semiconductor body. An edge electrode is disposed in the trench, a dielectric layer is disposed in the trench between the edge electrode and the semiconductor body, a first edge zone of the second conductivity type adjoin the trench and are at least partially disposed below the trench.Type: ApplicationFiled: August 3, 2007Publication date: February 21, 2008Applicant: INFINEON TECHNOLOGIES AUSTRIA AGInventors: Franz Hirler, Ralf Siemieniec, Christian Geissler