Patents by Inventor Thomas Mikolajick
Thomas Mikolajick 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: 7838921Abstract: A memory cell arrangement includes a first memory cell string having a plurality of serially source-to-drain-coupled transistors, at least some of them being memory cells, a second memory cell string having a plurality of serially source-to-drain-coupled transistors, at least some of them being memory cells. A dielectric material is between and above the first memory cell string and the second memory cell string. A source/drain line groove is defined in the dielectric material. The source/drain line groove extends from a source/drain region of one transistor of the first memory cell string to a source/drain region of the second memory cell string. Electrically conductive filling material is disposed in the source/drain line groove. Dielectric filling material is disposed in the source/drain line groove between the source/drain regions.Type: GrantFiled: September 22, 2006Date of Patent: November 23, 2010Assignee: Qimonda AGInventors: Josef Willer, Thomas Mikolajick, Nicolas Nagel, Michael Specht
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Patent number: 7714377Abstract: Embodiments of the invention relate to integrated circuits having a memory cell arrangement and methods of manufacturing thereof. In one embodiment of the invention, an integrated circuit has a memory cell arrangement which includes a fin structure extending in its longitudinal direction as a first direction, including a first insulating layer, a first active region disposed above the first insulating layer, a second insulating layer disposed above the first active region, a second active region disposed above the second insulating layer, a charge storage layer structure disposed at least next to at least one sidewall of the fin structure covering at least a portion of the first active region and at least a portion of the second active region, and a control gate disposed next to the charge storage layer structure.Type: GrantFiled: April 19, 2007Date of Patent: May 11, 2010Assignees: Qimonda AG, Qimonda Flash GmbHInventors: Michael Specht, Nicolas Nagel, Franz Hofmann, Thomas Mikolajick
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Patent number: 7662687Abstract: A semiconductor memory having charge trapping memory cells and fabrication method thereof. The direction of current flow of each channel region of the memory transistors runs transversely with respect to the relevant word line, the bit lines are arranged on the top side of the word lines and in a manner electrically insulated from the latter, and electrically conductive local interconnects of source-drain regions are present, which are arranged in sections in interspaces between the word lines and in a manner electrically insulated from the latter and connected to the bit lines, wherein gate electrodes are arranged in trenches at least partly formed in the memory substrate.Type: GrantFiled: April 28, 2008Date of Patent: February 16, 2010Assignee: Infineon Technologies AGInventors: Josef Willer, Thomas Mikolajick, Christoph Ludwig, Norbert Schulze, Karl Heinz Kuesters
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Patent number: 7646647Abstract: An electronic circuit arrangement includes at least one memory element in which at least two electrical quantities can be stored. A switching unit is electrically connected to the memory element and has at least one first circuit path and a second circuit path. A storage unit has a first partial storage unit and a second partial storage unit. Each partial storage unit is set up for storing at least one electrical quantity. The switching unit is set up in such a way that it can sequentially pass a first one of the at least two electrical quantities along the first circuit path to the first partial storage unit and a second one of the at least two electrical quantities along the second circuit path to the second partial storage unit.Type: GrantFiled: October 4, 2006Date of Patent: January 12, 2010Assignees: Qimonda AG, Qimonda Flash GmbH & Co. KGInventors: Thomas Kern, Thomas Mikolajick, Jan-Malte Schley
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Patent number: 7616492Abstract: An electronic circuit arrangement includes a storage unit set up for storing at least two analog electrical quantities. A first evaluation circuit is coupled to the storage unit and is set up in such a way that it assesses the at least two analog electrical quantities and provides a first assessment result. A second evaluation circuit is coupled to the storage unit and is set up in such a way that it assesses at least one of the at least two analog electrical quantities with a predetermined threshold value and provides a second assessment result.Type: GrantFiled: October 4, 2006Date of Patent: November 10, 2009Assignees: Qimonda AG, Qimonda Flash GmbH & Co. KGInventors: Thomas Kern, Thomas Mikolajick, Jan-Malte Schley
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Patent number: 7521351Abstract: A semiconductor product includes, a substrate with a first dielectric layer having contact hole fillings for contacting active areas in the substrate. A second dielectric layer with contact holes is provided therein. The contact holes have a width in a first lateral direction. The product further includes conductive lines, each conductive line passing over contact holes in the second dielectric layer and contacting a plurality of contact hole fillings in the first dielectric layer. The conductive lines have a width, in the first lateral direction, that is smaller than the width of the contact holes of the second dielectric layer. The conductive lines are in direct mechanical contact with the contact hole fillings and thereby remove the need to provide any conventional “contact to interconnect” structures.Type: GrantFiled: June 30, 2005Date of Patent: April 21, 2009Assignee: Infineon Technologies AGInventors: Thomas Mikolajick, Torsten Mueller, Nicolas Nagel, Lars Bach, Dominik Olligs, Veronika Polei
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Publication number: 20090029512Abstract: A semiconductor memory having charge trapping memory cells and fabrication method thereof. The direction of current flow of each channel region of the memory transistors runs transversely with respect to the relevant word line, the bit lines are arranged on the top side of the word lines and in a manner electrically insulated from the latter, and electrically conductive local interconnects of source-drain regions are present, which are arranged in sections in interspaces between the word lines and in a manner electrically insulated from the latter and connected to the bit lines, wherein gate electrodes are arranged in trenches at least partly formed in the memory substrate.Type: ApplicationFiled: April 28, 2008Publication date: January 29, 2009Applicant: INFINEON TECHNOLOGIES AGInventors: Josef Willer, Thomas Mikolajick, Christoph Ludwig, Norbert Schulze, Karl Heinz Kuesters
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Publication number: 20080259687Abstract: Embodiments of the invention relate to integrated circuits having a memory cell arrangement and methods of manufacturing thereof. In one embodiment of the invention, an integrated circuit has a memory cell arrangement which includes a fin structure extending in its longitudinal direction as a first direction, including a first insulating layer, a first active region disposed above the first insulating layer, a second insulating layer disposed above the first active region, a second active region disposed above the second insulating layer, a charge storage layer structure disposed at least next to at least one sidewall of the fin structure covering at least a portion of the first active region and at least a portion of the second active region, and a control gate disposed next to the charge storage layer structure.Type: ApplicationFiled: April 19, 2007Publication date: October 23, 2008Inventors: Michael Specht, Nicolas Nagel, Franz Hofmann, Thomas Mikolajick
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Patent number: 7402490Abstract: To manufacture a memory device, a gate dielectric layer is formed over a semiconductor body and a gate electrode layer is formed over the gate dielectric layer. The gate electrode layer is structured to form a gate electrode with sidewalls. An etching process is performed to remove parts of the gate dielectric layer from beneath the gate electrode on opposite sides of the gate electrode. Boundary layers, e.g., oxide layers, are formed on an upper surface of the semiconductor body and a lower surface of the gate electrode adjacent where the gate dielectric has been removed thereby leaving spaces. Charge-trapping layer material can then be deposited to fill the spaces. Source and drain regions are then formed in the semiconductor body adjacent the gate electrode.Type: GrantFiled: October 19, 2005Date of Patent: July 22, 2008Assignee: Infineon Technologies AGInventors: Thomas Mikolajick, Hans Reisinger, Josef Willer, Corvin Liaw
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Patent number: 7368350Abstract: A method for fabricating stacked non-volatile memory cells and non-volatile memory cell arrays are disclosed. A semiconductor wafer is provided having a charge-trapping layer and a conductive layer deposited on the surface of the semiconductor wafer. Using a mask layer on top of the conductive layer, contact holes are formed into which a contact fill material is deposited. A further conductive layer is deposited on the surface of the semiconductor wafer and is patterned so as to form word lines. The contact fill material is connected to a contact plug using the contact holes with the contact fill material as a landing pad.Type: GrantFiled: December 20, 2005Date of Patent: May 6, 2008Assignee: Infineon Technologies AGInventors: Dominik Olligs, Torsten Mueller, Karl-Heinz Kuesters, Veronika Polei, Thomas Mikolajick, Josef Willer
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Patent number: 7365382Abstract: A semiconductor memory having charge trapping memory cells, where the direction of current flow of each channel region of the memory transistors runs transversely with respect to the relevant word line, the bit lines are arranged on the top side of the word lines and in a manner electrically insulated from the latter, and electrically conductive local interconnects of source-drain regions are present, which are arranged in sections in interspaces between the word lines and in a manner electrically insulated from the latter and connected to the bit lines, wherein gate electrodes are arranged in trenches at least partly formed in the memory substrate.Type: GrantFiled: February 28, 2005Date of Patent: April 29, 2008Assignee: Infineon Technologies AGInventors: Josef Willer, Thomas Mikolajick, Christoph Ludwig, Norbert Schulze, Karl-Heinz Kuesters
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Publication number: 20080080226Abstract: A memory system includes a plurality of resistive memory cell fields including at least a first resistive memory cell field and a second resistive memory cell field, the first resistive memory cell field formed with a plurality of resistive memory cells storing data at a first data storage speed, the second resistive memory cell field formed with a plurality of resistive memory cells storing data at a second data storage speed lower than the first data storage speed, and a controller controlling data transfer between the plurality of resistive memory cell fields.Type: ApplicationFiled: September 25, 2006Publication date: April 3, 2008Inventors: Thomas Mikolajick, Rainer Spielberg, Nicolas Nagel, Michael Specht, Josef Willer, Detlev Richter, Luca de Ambroggi, Andreas Taeuber
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Publication number: 20080073694Abstract: A memory cell arrangement includes a first memory cell string having a plurality of serially source-to-drain-coupled transistors, at least some of them being memory cells, a second memory cell string having a plurality of serially source-to-drain-coupled transistors, at least some of them being memory cells. A dielectric material is between and above the first memory cell string and the second memory cell string. A source/drain line groove is defined in the dielectric material. The source/drain line groove extends from a source/drain region of one transistor of the first memory cell string to a source/drain region of the second memory cell string. Electrically conductive filling material is disposed in the source/drain line groove. Dielectric filling material is disposed in the source/drain line groove between the source/drain regions.Type: ApplicationFiled: September 22, 2006Publication date: March 27, 2008Inventors: Josef Willer, Thomas Mikolajick, Nicolas Nagel, Michael Specht
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Publication number: 20070231991Abstract: A semiconductor memory device includes a channel region, a gate electrode adjacent the channel region, and a charge-trapping layer between the channel region and the gate electrode. A voltage is applied between the gate electrode and the channel region to cause a first current of a first kind of charge carriers from the channel region to move into the charge-trapping layer and to cause a second current of a second kind of charge carriers from the gate electrode to move into the charge-trapping layer, until the value of the second current is at least half the amount of the first current value.Type: ApplicationFiled: March 31, 2006Publication date: October 4, 2007Inventors: Josef Willer, Nicolas Nagel, Thomas Mikolajick, Karl-Heinz Kuesters
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Patent number: 7273786Abstract: In order to be able to store information in a non-volatile fashion as compactly and as flexibly as possible in a semiconductor memory cell, the original gate region of a conventional memory transistor is removed, and a memory gate configuration having a plurality of memory gates that are spatially separate from one another and that are electrically insulated with respect to one another is formed.Type: GrantFiled: December 22, 2004Date of Patent: September 25, 2007Assignee: Infineon Technologies AGInventor: Thomas Mikolajick
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Patent number: 7272040Abstract: An array of charge-trapping multi-bit memory cells is arranged in a virtual-ground NAND architecture. The memory cells are erased by Fowler-Nordheim tunneling of electrons into the memory layers. The write operation is effected by hot hole injection. A write voltage is applied by a bitline to two NAND chains in series. The subsequent bitline on the side of the memory cell to be programmed is maintained on floating potential, whereas the bitline on the other side is set to an inhibit voltage, which is provided to inhibit a program disturb of an addressed memory cell which is not to be programmed. This virtual-ground NAND architecture of charge-trapping memory cells enables an increased storage density.Type: GrantFiled: April 29, 2005Date of Patent: September 18, 2007Assignee: Infineon Technologies AGInventors: Thomas Mikolajick, Josef Willer, Corvin Liaw
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Publication number: 20070194301Abstract: One aspect of the invention relates to a semiconductor arrangement having at least one nonvolatile memory cell which has a first electrode comprising at least two layers; and having an organic material, the organic material forming a compound with that layer of the first electrode which is in direct contact. One aspect of the invention furthermore relates to a method for producing the nonvolatile memory cell, a semiconductor arrangement having a plurality of memory cells according to the invention, and a method for producing the same.Type: ApplicationFiled: November 24, 2004Publication date: August 23, 2007Inventors: Recai Sezi, Andreas Walter, Reimund Engl, Anna Maltenberger, Christine Dehm, Sitaram Arkalgud, Igor Kasko, Joachim Nuetzel, Jakob Kriz, Thomas Mikolajick, Cay-Uwe Pinnow
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Publication number: 20070166924Abstract: When fabricating a memory cell with an organic storage layer which stores a digital information item, processing of polycrystalline and monocrystalline semiconductor structures in which high temperatures are employed is concluded prior to application of the organic storage layer.Type: ApplicationFiled: July 21, 2004Publication date: July 19, 2007Applicant: INFINEON TECHNOLOGIES AGInventors: Michael Kund, Thomas Mikolajick, Cay-Uwe Pinnow
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Publication number: 20070141799Abstract: A method for fabricating stacked non-volatile memory cells and non-volatile memory cell arrays are disclosed. A semiconductor wafer is provided having a charge-trapping layer and a conductive layer deposited on the surface of the semiconductor wafer. Using a mask layer on top of the conductive layer, contact holes are formed into which a contact fill material is deposited. A further conductive layer is deposited on the surface of the semiconductor wafer and is patterned so as to form word lines. The contact fill material is connected to a contact plug using the contact holes with the contact fill material as a landing pad.Type: ApplicationFiled: December 20, 2005Publication date: June 21, 2007Inventors: Dominik Olligs, Torsten Mueller, Karl-Heinz Kuesters, Veronika Polei, Thomas Mikolajick, Josef Willer
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Patent number: 7227219Abstract: A memory cell patterned as a trench transistor is provided with a first gate electrode (4) as auxiliary gate for source-side injection and a second gate electrode (5) electrically insulated therefrom, which are arranged in the trench, and has, at the trench walls, a storage layer sequence (10) provided for charge trapping and comprising a storage layer (12) between boundary layers (11, 13). The first gate electrode (4) and the second gate electrode (5) are electrically insulated from one another, which can be effected by means of a portion of the storage layer sequence (10). Source/drain regions (3) are arranged on the top side laterally with respect to the trenches. Word lines (6), source/drain lines and control gate lines are present for the electrical driving.Type: GrantFiled: February 10, 2005Date of Patent: June 5, 2007Assignee: Infineon Technologies AGInventor: Thomas Mikolajick