Patents by Inventor Till Schloesser

Till Schloesser 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: 7738279
    Abstract: According to one embodiment of the present invention, an integrated circuit is provided including a plurality of resistivity changing memory elements and a plurality of memory element select devices, wherein the select devices are floating body select devices.
    Type: Grant
    Filed: June 2, 2008
    Date of Patent: June 15, 2010
    Assignee: Qimonda AG
    Inventors: Stefan Slesazeck, Till Schloesser, Ulrike Gruening-Von Schwerin
  • Patent number: 7727837
    Abstract: A method of forming an integrated circuit having a capacitor is disclosed. In one embodiment, the method includes forming a capacitor element with a first electrode, a dielectric layer and a second electrode. The capacitor element is formed using a support layer.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: June 1, 2010
    Assignee: Qimonda AG
    Inventors: Ulrike Gruening-von Schwerin, Rolf Weis, Wolfgang Henke, Odo Wunnicke, Till Schloesser, Florian Schnabel, Wolfgang Mueller
  • Patent number: 7729154
    Abstract: An integrated circuit with buried control line structures. In one embodiment, the control lines are subdivided into sections, wherein regions free of switching transistors are provided at intervals along the control lines. Connections for feeding the control potentials into the sections of the control lines are provided at least in a subset of the regions free of switching transistors. The isolations lines are connected to one another by an interconnect running transversely with respect to the control lines.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: June 1, 2010
    Assignee: Qimonda AG
    Inventors: Dirk Baumann, Dominique Savignac, Till Schloesser, Helmut Schneider
  • Publication number: 20100097835
    Abstract: An integrated circuit including a memory cell array comprises active area lines, bitlines, the bitlines being arranged so that an individual one intersects a plurality of the active area lines to form bitline-contacts, respectively, the bitlines being arranged at a bitline pitch, wordlines being arranged so that an individual one of the wordlines intersects a plurality of the active area lines, and an individual one of the wordlines intersects a plurality of the bitlines, the wordlines being arranged at a wordline pitch, wherein neighboring bitline-contacts, each of which is connected to one of the active area lines, are connected with different bitlines, and the bitline pitch is different from the wordline pitch.
    Type: Application
    Filed: October 16, 2008
    Publication date: April 22, 2010
    Applicant: QIMONDA AG
    Inventors: Martin Popp, Till Schloesser
  • Publication number: 20100096669
    Abstract: An integrated circuit including a memory cell array comprises transistors being arranged along parallel active area lines, bitlines, the bitlines being arranged so that an individual one intersects a plurality of the active area lines to form bitline-contacts, respectively, the bitlines being formed as wiggled lines, wordlines being arranged so that an individual one of the wordlines intersects a plurality of the active area lines, and an individual one of the wordlines intersects a plurality of the bitlines, wherein neighboring bitline-contacts, each of which is connected to one of the active area lines, are connected with different bitlines.
    Type: Application
    Filed: October 16, 2008
    Publication date: April 22, 2010
    Applicant: QIMONDA AG
    Inventors: Martin Popp, Till Schloesser
  • Patent number: 7687343
    Abstract: A storage capacitor includes a first capacitor portion and a second capacitor portion, the second capacitor portion being disposed above the first capacitor portion, thereby defining a first direction. The first and the second portions each include a hollow body made of a conductive material, respectively, thereby forming a first capacitor electrode. An upper diameter of each of the hollow bodies is larger than a lower diameter of the hollow body, the diameter being measured perpendicularly with respect to the first direction. The storage capacitor also includes a second capacitor electrode and a dielectric material disposed between the first and the second capacitor electrodes. The storage capacitor also includes an insulating material disposed outside the hollow bodies, and a layer of an insulating material. A lower side of the insulating layer is disposed at a height of an upper side of the first capacitor portion.
    Type: Grant
    Filed: December 4, 2006
    Date of Patent: March 30, 2010
    Assignee: Qimonda AG
    Inventors: Peter Moll, Peter Baars, Till Schloesser, Rolf Weis, Klaus Muemmler
  • Patent number: 7642572
    Abstract: An integrated circuit having a memory cell array and a method of forming an integrated circuit is disclosed. One embodiment provides bitlines running along a first direction, wordlines running along a second direction substantially perpendicular to the first direction, active areas and bitline contacts. The bitline contacts are arranged in columns extending in the second direction and in rows extending in the first direction. A distance between neighboring bitlines is DL, and a distance between neighboring bitline contacts is DC, DC being measured parallel to the first direction. The following relation holds: 1/2.25?DL/DC?1/1.75.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: January 5, 2010
    Assignee: Qimonda AG
    Inventors: Martin Popp, Till Schloesser, Ulrike Gruening-von Schwerin, Rolf Weis
  • Patent number: 7635893
    Abstract: A transistor, memory cell array and method of manufacturing a transistor are disclosed.
    Type: Grant
    Filed: May 13, 2005
    Date of Patent: December 22, 2009
    Assignee: Infineon Technologies AG
    Inventors: Rolf Weis, Till Schloesser, Ulrike Gruening von Schwerin
  • Publication number: 20090296449
    Abstract: According to one embodiment of the present invention, an integrated circuit is provided including a plurality of resistivity changing memory elements and a plurality of memory element select devices, wherein the select devices are floating body select devices.
    Type: Application
    Filed: June 2, 2008
    Publication date: December 3, 2009
    Inventors: Stefan Slesazeck, Till Schloesser, Ulrike Gruening Von Schwerin
  • Patent number: 7605032
    Abstract: In a method for producing a trench transistor, a substrate of a first conduction type is provided and a trench in the substrate and a gate dielectric in the trench are formed. A first conductive filling in the trench as a gate electrode on the gate dielectric and first source and drain regions are formed. An etched-back first conductive filling is produced by etching back the first conductive filling down to a depth below the first source and drain regions and second source and drain regions are formed. The second source and drain regions adjoin the first source and drain regions and extend to a depth at least as far as the etched-back first conductive filling. An insulation spacer above the etched-back first conductive filling is formed in the trench and a second conductive filling is provided in the trench as an upper part of the gate electrode.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: October 20, 2009
    Assignee: Qimonda AG
    Inventors: Richard Johannes Luyken, Hans-Peter Moll, Martin Popp, Till Schloesser, Marc Strasser, Rolf Weis
  • Patent number: 7595262
    Abstract: A manufacturing method for an integrated semiconductor structure and a corresponding semiconductor structure is disclosed. The method includes forming a peripheral circuitry in a peripheral device region, wherein the peripheral circuitry includes a peripheral transistor at least partially formed in the semiconductor substrate and having a first gate dielectric formed in a first high temperature process step. The method further includes forming a plurality of memory cells in a memory cell region, each of said memory cells including an access transistor at least partially formed in a semiconductor substrate and having a second gate dielectric formed in a second high temperature process step and having a metallic gate conductor. The first and second high temperature process steps are performed before a step of forming the metallic gate conductor.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: September 29, 2009
    Assignee: Qimonda AG
    Inventor: Till Schlösser
  • Patent number: 7539039
    Abstract: An integrated circuit, a memory cell, memory device and method of operating the memory device is disclosed. In one embodiment, an integrated circuit having a resistively switching memory cell includes a bitline electrode and a second electrode having a lower voltage potential than the bitline electrode; a switching active volume and a selection transistor connected in series between the bitline electrode and the second electrode. The second electrode is connected, via a connection transistor, to a third electrode having the same or a lower voltage potential than the second electrode; wherein the second electrode includes a buried electrode at least partially positioned below the bitline electrode and the third electrode.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: May 26, 2009
    Assignee: Qimonda AG
    Inventors: Ulrike Gruening-von Schwerin, Till Schloesser
  • Patent number: 7476920
    Abstract: An access transistor arrangement is provided for a 6F2 stacked capacitor DRAM memory cell layout with shared bit line contacts. The access transistors are arranged in pairs along semiconductor lines. The two transistors of each pair of transistors are arranged laterally reversed opposing the respective common bit line section. Each pair of access transistors is separated from the adjacent pair of access transistors by an isolation transistor which is permanently turned off. The access transistors and the isolation transistors are formed as identical recessed channel transistors with elongated channel and enhanced isolation properties. The same dopant concentration may be provided for both junctions of the access transistors. As identical devices are provided both as access transistor and as isolation transistors, the complexity of lithographic patterning processes is reduced.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: January 13, 2009
    Assignee: Infineon Technologies AG
    Inventor: Till Schloesser
  • Patent number: 7471547
    Abstract: A memory cell array includes memory cells, bit lines running along a first direction, word lines running along a second direction perpendicular to the first direction, and continuous active area lines, wherein transistors are at least partially formed in the active area lines. The transistors electrically couple corresponding memory cells to corresponding bit lines via bit line contacts, and the transistors are addressed by the word lines. The bit line contacts are formed in a region generally defined by an intersection of a bit line and a corresponding active area line. Neighboring bit line contacts which are connected with one active area line are connected with neighboring bit lines. Consequently, one active area line is crossed by a plurality of bit lines.
    Type: Grant
    Filed: November 27, 2007
    Date of Patent: December 30, 2008
    Assignee: Infineon Technologies AG
    Inventor: Till Schloesser
  • Patent number: 7449739
    Abstract: A capacitor for a dynamic semiconductor memory cell, a memory and method of making a memory is disclosed. In one embodiment, a storage electrode of the capacitor has a pad-shaped lower section and a cup-shaped upper section, which is placed on top of the lower section. A lower section of a backside electrode encloses the pad-shaped section of the storage electrode. An upper section of the backside electrode is enclosed by the cup-shaped upper section of the storage electrode. A first capacitor dielectric separates the lower sections of the backside and the storage electrodes. A second capacitor dielectric separates the upper sections of the backside and the storage electrodes. The electrode area of the capacitor is enlarged while the requirements for the deposition of the capacitor dielectric are relaxed. Aspect ratios for deposition and etching processes are reduced.
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: November 11, 2008
    Assignee: Infineon Technologies AG
    Inventors: Johannes Heitmann, Peter Moll, Odo Wunnicke, Till Schloesser
  • Patent number: 7442609
    Abstract: A method of manufacturing a transistor. In one embodiment, the method includes forming a gate electrode by defining a gate groove in the substrate. A plate-like portion is defined in each of the trenches at a position adjacent to the groove so that the two plate-like portions will be connected with the groove and the groove is disposed between two plate-like portions. In one embodiment, the two plate-like portions are defined by an etching process which selectively etches the isolating material of the isolation trenches with respect to the semiconductor substrate material. A gate insulating material is provided at an interface between the active area and the groove and the interface between the active area and the plate-like portions, and a gate electrode material is deposited so as to fill the groove and the two plate-like portions.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: October 28, 2008
    Assignee: Infineon Technologies AG
    Inventors: Peng-Fei Wang, Joachim Nuetzel, Rolf Weis, Till Schloesser, Marc Strasser, Richard Johannes Luyken
  • Publication number: 20080253160
    Abstract: An integrated circuit having a memory cell array and a method of forming an integrated circuit is disclosed. One embodiment provides bitlines running along a first direction, wordlines running along a second direction substantially perpendicular to the first direction, active areas and bitline contacts. The bitline contacts are arranged in columns extending in the second direction and in rows extending in the first direction. A distance between neighboring bitlines is DL, and a distance between neighboring bitline contacts is DC, DC being measured parallel to the first direction. The following relation holds: 1/2.25?DL/DC?1/1.75.
    Type: Application
    Filed: April 13, 2007
    Publication date: October 16, 2008
    Applicant: QIMONDA AG
    Inventors: Martin Popp, Till Schloesser, Ulrike Gruening-von Schwerin, Rolf Weis
  • Publication number: 20080217655
    Abstract: An integrated circuit with buried control line structures. In one embodiment, the control lines are subdivided into sections, wherein regions free of switching transistors are provided at intervals along the control lines. Connections for feeding the control potentials into the sections of the control lines are provided at least in a subset of the regions free of switching transistors. The isolations lines are connected to one another by an interconnect running transversely with respect to the control lines.
    Type: Application
    Filed: February 8, 2008
    Publication date: September 11, 2008
    Applicant: QIMONDA AG
    Inventors: Dirk Baumann, Dominique Savignac, Till Schloesser, Helmut Schneider
  • Publication number: 20080217672
    Abstract: An integrated circuit having a memory arrangement including capacitor elements and further capacitor elements is disclosed. One embodiment provides a substrate layer with contact pads and further contact pads; the capacitor elements being disposed in a first level on the substrate layer and connected with the contact pads; the further capacitor elements being disposed in a second level above the first level; contact elements being disposed between the capacitor elements and connected with the further contact pads; the further capacitor elements being disposed above the contact elements and being connected with the contact elements.
    Type: Application
    Filed: March 9, 2007
    Publication date: September 11, 2008
    Applicant: QIMONDA AG
    Inventors: Martin Popp, Ulrike Gruening-von Schwerin, Till Schloesser, Peter Lahnor, Rolf Weis, Odo Wunnicke
  • Publication number: 20080205118
    Abstract: An integrated circuit, a memory cell, memory device and method of operating the memory device is disclosed. In one embodiment, an integrated circuit having a resistively switching memory cell includes a bitline electrode and a second electrode having a lower voltage potential than the bitline electrode; a switching active volume and a selection transistor connected in series between the bitline electrode and the second electrode. The second electrode is connected, via a connection transistor, to a third electrode having the same or a lower voltage potential than the second electrode; wherein the second electrode includes a buried electrode at least partially positioned below the bitline electrode and the third electrode.
    Type: Application
    Filed: March 30, 2007
    Publication date: August 28, 2008
    Applicant: Qimonda AG
    Inventors: Ulrike Gruening-von Schwerin, Till Schloesser