Patents by Inventor Andreas Hilliger
Andreas Hilliger 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: 11960465Abstract: Systems, devices, and techniques are disclosed for database inventory isolation. Demand levels for access to items may be monitored. The items may have associated inventory counts in a database. An item of the items for which to isolate the inventory count associated with the item may be determined based on the demand levels. The inventory count associated with the determined item may be isolated by moving the inventory count associated with the determined item from a first data block that stores the inventory count associated with the determined item and inventory counts associated with others of the items to a second data block that does not store any other inventory counts.Type: GrantFiled: January 29, 2021Date of Patent: April 16, 2024Assignee: Salesforce, Inc.Inventors: Udo Timpe, Andreas Eiserloh, Eckart Hilliger
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Patent number: 7378700Abstract: An FeRAM comprising includes a ferroelectric material sandwiched between a top electrode and a bottom electrode. A V0-contact provides an electrical connection with an underlying CS-contact. The V0-contact is aligned using the bottom electrode. A liner layer covers a sidewall of the bottom electrode and provides a stop to an etch a hole forming the V0-contact. A method is utilized to form a V0-contact in an FeRAM comprising. An Fe capacitor of the FeRAM is encapsulated, a bottom electrode is etched, a liner layer is deposited covering a sidewall of the bottom electrode, and a hole is etched for the V0-contact until the etching is stopped by the liner layer.Type: GrantFiled: March 9, 2006Date of Patent: May 27, 2008Assignee: Infineon Technologies AGInventors: Jingyu Lian, Nicolas Nagel, Stefan Gernhardt, Rainer Bruchhaus, Andreas Hilliger, Uwe Wellhausen
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Patent number: 7101785Abstract: A method of forming a contact to an underlayer of a device includes the steps of forming a contact hole, forming a contact hole barrier layer of a barrier material in the contact hole of the device, etching the contact hole barrier layer on the bottom surface of the contact hole, depositing a liner material in the contact hole, and filling the contact hole with a conductive material. A device such as a semiconductor, passive device, capacitor or FeRAM is formed in accordance with the method. The portions of the contact hole barrier layer on the side walls of the contact hole inhibit lateral diffusion of hydrogen and/or oxygen. The contact hole barrier layer can be performed after a wet etch process to fill voids in an existing barrier layer caused by that process, or prior to the wet etch process to prevent damage to the existing barrier layer.Type: GrantFiled: July 22, 2003Date of Patent: September 5, 2006Assignee: Infineon Technologies AGInventors: Andreas Hilliger, Stefan Gernhardt, Uwe Wellhausen, Karl Hornik
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Patent number: 7084027Abstract: The invention relates to a method for producing an integrated circuit comprising the following steps: preparing a semi-conductor substrate (1) with a contacting circuit area (SS); providing an insulating layer (IS) on the surface of the semi-conductor substrate (1): providing a contact hole (KL) in the insulating layer (IS) for making contacting the circuit area (SS); providing an insulating spacer area (10?) in at least the area above the contact hole (KL); providing at least three trenches (BG1; BG2; BG3), the first (BG1) of which is arranged next to the contact hole (KL), a second (BG2) is disposed across the contact hole (KL) and a third (BG3) is next to the contact hole (KL). The spacer area (10?) is placed between the first and the second trench (BG1; BG2) and the second and the third trench (BG2; BG3); filling the trenches (BG1; BG2; BG3) with a conductive material; and chemical-mechanical polishing of conductive material for producing three separated trenches (BL1; BL2; BL3).Type: GrantFiled: September 18, 2001Date of Patent: August 1, 2006Assignee: Infineon Technologies AGInventors: Andreas Hilliger, Ralf Staub, Eike Lüken
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Publication number: 20060151819Abstract: An FeRAM comprising includes a ferroelectric material sandwiched between a top electrode and a bottom electrode. A V0-contact provides an electrical connection with an underlying CS-contact. The V0-contact is aligned using the bottom electrode. A liner layer covers a sidewall of the bottom electrode and provides a stop to an etch a hole forming the V0-contact. A method is utilized to form a V0-contact in an FeRAM comprising. An Fe capacitor of the FeRAM is encapsulated, a bottom electrode is etched, a liner layer is deposited covering a sidewall of the bottom electrode, and a hole is etched for the V0-contact until the etching is stopped by the liner layer.Type: ApplicationFiled: March 9, 2006Publication date: July 13, 2006Inventors: Jingyu Lian, Nicolas Nagel, Stefan Gernhardt, Rainer Bruchhaus, Andreas Hilliger, Uwe Wellhausen
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Patent number: 7071506Abstract: A ferroelectric capacitor device comprises a substrate, a contact plug passing through the substrate, a first electrode formed on the substrate, the first electrode being electrically connected to said plug, a ferroelectric layer formed on the first electrode, a second electrode formed on the ferroelectric layer, one or more first encapsulation layers on the second electrode, the encapsulation layers extending over the device, and one or more hydrogen storage material layers on the encapsulation layers. One or more second encapsulation layers may be formed on the one or more hydrogen storage material layers.Type: GrantFiled: September 5, 2003Date of Patent: July 4, 2006Assignee: Infineon Technologies AGInventors: Bum-Ki Moon, Karl Hornik, Haoren Zhuang, Ulrich Egger, Jenny Lian, Andreas Hilliger
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Patent number: 7061035Abstract: An FeRAM comprising includes a ferroelectric material sandwiched between a top electrode and a bottom electrode. A V0-contact provides an electrical connection with an underlying CS-contact. The V0-contact is aligned using the bottom electrode. A liner layer covers a sidewall of the bottom electrode and provides a stop to an etch a hole forming the V0-contact. A method is utilized to form a V0-contact in an FeRAM comprising. An Fe capacitor of the FeRAM is encapsulated, a bottom electrode is etched, a liner layer is deposited covering a sidewall of the bottom electrode, and a hole is etched for the VO-contact until the etching is stopped by the liner layer.Type: GrantFiled: October 1, 2003Date of Patent: June 13, 2006Assignee: Infineon Technologies AGInventors: Jingyu Lian, Nicolas Nagel, Stefan Gernhardt, Rainer Bruchhaus, Andreas Hilliger, Uwe Wellhausen
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Publication number: 20060102941Abstract: Disclosed is a semiconductor device comprising a semiconductor substrate, a capacitor provided above the semiconductor substrate and including a bottom electrode, a top electrode, and a dielectric film provided between the bottom electrode and the top electrode, the bottom electrode comprising a first conductive film containing iridium, a second conductive film provided between the dielectric film and the first conductive film and formed of a noble metal film, a third conductive film provided between the dielectric film and the second conductive film and formed of a metal oxide film having a perovskite structure, and a diffusion prevention film provided between the first conductive film and the second conductive film and including at least one of a metal film and a metal oxide film, the diffusion prevention film preventing diffusion of iridium contained in the first conductive film.Type: ApplicationFiled: November 12, 2004Publication date: May 18, 2006Inventors: Hiroshi Itokawa, Koji Yamakawa, Tohru Ozaki, Yoshinori Kumura, Takamichi Tsuchiya, Nicolas Nagel, Bum-Ki Moon, Andreas Hilliger
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Patent number: 7042037Abstract: Disclosed is a semiconductor device comprising a semiconductor substrate, a capacitor provided above the semiconductor substrate and including a bottom electrode, a top electrode, and a dielectric film provided between the bottom electrode and the top electrode, the bottom electrode comprising a first conductive film containing iridium, a second conductive film provided between the dielectric film and the first conductive film and formed of a noble metal film, a third conductive film provided between the dielectric film and the second conductive film and formed of a metal oxide film having a perovskite structure, and a diffusion prevention film provided between the first conductive film and the second conductive film and including at least one of a metal film and a metal oxide film, the diffusion prevention film preventing diffusion of iridium contained in the first conductive film.Type: GrantFiled: November 12, 2004Date of Patent: May 9, 2006Assignees: Kabushiki Kaisha Toshiba, Infineon Technologies AGInventors: Hiroshi Itokawa, Koji Yamakawa, Tohru Ozaki, Yoshinori Kumura, Takamichi Tsuchiya, Nicolas Nagel, Bum-Ki Moon, Andreas Hilliger
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Patent number: 7042705Abstract: The present invention provides a sidewall oxygen diffusion barrier and a method for fabricating the sidewall oxygen diffusion barrier that reduces the diffusion of oxygen into contact plugs during a CW hole reactive ion etch of a ferroelectric capacitor of an FeRAM device. In one embodiment the sidewall barrier is formed from a substrate fence. In another embodiment, the sidewall barrier is formed by etching back an oxygen barrier.Type: GrantFiled: January 30, 2003Date of Patent: May 9, 2006Assignees: Infineon Technologies AG, Kabushiki Kaisha ToshibaInventors: Haoren Zhuang, Ulrich Egger, Kazuhiro Tomioka, Jingyu Lian, Nicolas Nagel, Andreas Hilliger, Gerhard Beitel
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Patent number: 7009230Abstract: An improved barrier stack for inhibiting diffusion of atoms or molecules, such as O2 is disclosed. The barrier stack is particularly useful in capacitor over plug structures to prevent plug oxidation which can adversely impact the reliability of the structures. The barrier stack includes first and second barrier layers. In one embodiment, the first barrier layer comprises first and second sub-barrier layers having mismatched grain boundaries. The sub-barrier layers are selected from, for example, Ir, Ru, Pd, Rh, or alloys thereof. By providing mismatched grain boundaries, the interface of the sub-barrier layers block the diffusion path of oxygen. To further enhance the barrier properties, the first barrier layer is passivated with O2 using, for example, a rapid thermal oxidation. The RTO forms a thin oxide layer on the surface of the first barrier layer. The oxide layer can advantageously promote mismatching of the grain boundaries of the first and second sub-barrier layer.Type: GrantFiled: July 10, 2003Date of Patent: March 7, 2006Assignees: Infineon Technologies Aktiengesellschaft, Kabushiki Kaisha ToshibaInventors: Bum Ki Moon, Gerhard Beitel, Nicolas Nagel, Andreas Hilliger, Koji Yamakawa, Keitaro Imai
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Patent number: 7002196Abstract: A ferroelectric capacitor device, such as an FeRAM device is formed of a substrate having one or more contact plugs extending therethrough, and a first interlayer dielectric layer formed on the substrate. A spacer layer is formed on the first interlayer dielectric layer, a first oxygen barrier layer is formed on the spacer layer and a buffer layer is formed on the first oxygen barrier layer. A layer of liner material is formed on the buffer layer between the buffer layer and the contact plugs and a dielectric layer is sandwiched between a first electrode and a second electrode. A second oxygen barrier layer is applied to the device. The spacer layer should prevent any oxidation from reaching the interface between the liner material and the contact plugs as this interface is located beneath the first oxygen barrier layer. As a result, the electrical contact is not damaged.Type: GrantFiled: November 13, 2003Date of Patent: February 21, 2006Assignee: Infineon Technologies AGInventors: Andreas Hilliger, Jenny Lian
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Patent number: 6946735Abstract: The invention includes a wafer having a poly silicon plug passing through a CP-contact. The poly silicon plug is formed from a relatively heavily doped poly silicon layer and a relatively lightly doped poly silicon layer. The relatively lightly doped poly silicon layer passes through the relatively heavily doped poly silicon layer to extend beyond the relatively heavily doped poly silicon layer towards the surface of the wafer. A barrier layer covers top and side walls of the relatively lightly doped poly silicon layer for reducing oxidation at the surface of the poly silicon plug. The wafer is fabricated by depositing a relatively heavily doped poly silicon layer in a CP-contact, depositing a relatively lightly doped poly silicon layer to pass through the relatively heavily doped poly silicon layer, and depositing a barrier layer to cover top and side walls of the relatively lightly doped poly silicon layer to reduce oxidation at the surface of the poly silicon plug.Type: GrantFiled: November 29, 2002Date of Patent: September 20, 2005Assignee: Infineon AGInventors: Stefan Gernhardt, Jenny Lian, Andreas Hilliger, Rainer Bruchhaus, Uwe Wellhausen, Nicolas Nagel
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Patent number: 6906908Abstract: Disclosed is a semiconductor device comprising a semiconductor substrate, a capacitor provided above the semiconductor substrate, an insulation region which covers the capacitor and has a first hole and a second hole, the first hole being provided apart from the capacitor and extending in a vertical direction with respect to a main surface of the semiconductor substrate, the second hole reaching an electrode of the capacitor, extending in the vertical direction with respect to the main surface of the semiconductor substrate and being shallower than the first hole, a tungsten plug provided in the first hole, a first oxygen barrier film provided between the tungsten plug and a side wall of the first hole, and a conductive plug provided in the second hole and connected to the electrode of the capacitor.Type: GrantFiled: May 20, 2004Date of Patent: June 14, 2005Assignees: Kabushiki Kaisha Toshiba, Infineon Technologies, AGInventors: Moto Yabuki, Andreas Hilliger
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Publication number: 20050106759Abstract: A ferroelectric capacitor device, such as an FeRAM device is formed of a substrate having one or more contact plugs extending therethrough, and a first interlayer dielectric layer formed on the substrate. A spacer layer is formed on the first interlayer dielectric layer, a first oxygen barrier layer is formed on the spacer layer and a buffer layer is formed on the first oxygen barrier layer. A layer of liner material is formed on the buffer layer between the buffer layer and the contact plugs and a dielectric layer is sandwiched between a first electrode and a second electrode. A second oxygen barrier layer is applied to the device. The spacer layer should prevent any oxidation from reaching the interface between the liner material and the contact plugs as this interface is located beneath the first oxygen barrier layer. As a result, the electrical contact is not damaged.Type: ApplicationFiled: November 13, 2003Publication date: May 19, 2005Inventors: Andreas Hilliger, Jenny Lian
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Publication number: 20050082583Abstract: An FeRAM comprising includes a ferroelectric material sandwiched between a top electrode and a bottom electrode. A V0-contact provides an electrical connection with an underlying CS-contact. The V0-contact is aligned using the bottom electrode. A liner layer covers a sidewall of the bottom electrode and provides a stop to an etch a hole forming the V0-contact. A method is utilized to form a V0-contact in an FeRAM comprising. An Fe capacitor of the FeRAM is encapsulated, a bottom electrode is etched, a liner layer is deposited covering a sidewall of the bottom electrode, and a hole is etched for the VO-contact until the etching is stopped by the liner layer.Type: ApplicationFiled: October 1, 2003Publication date: April 21, 2005Inventors: Jingyu Lian, Nicolas Nagel, Stefan Gernhardt, Rainer Bruchhaus, Andreas Hilliger, Uwe Wellhausen
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Publication number: 20050051819Abstract: A ferroelectric capacitor device comprises a substrate, a contact plug passing through the substrate, a first electrode formed on the substrate, the first electrode being electrically connected to said plug, a ferroelectric layer formed on the first electrode, a second electrode formed on the ferroelectric layer, one or more first encapsulation layers on the second electrode, the encapsulation layers extending over the device, and one or more hydrogen storage material layers on the encapsulation layers. One or more second encapsulation layers may be formed on the one or more hydrogen storage material layers.Type: ApplicationFiled: September 5, 2003Publication date: March 10, 2005Inventors: Bum-Ki Moon, Karl Hornik, Haoren Zhuang, Ulrich Egger, Jenny Lian, Andreas Hilliger
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Patent number: 6858442Abstract: A memory cell having capacitor with top and bottom electrodes with a dielectric layer between is described. The bottom electrode is coupled to a first diffusion region of a transistor by a bottom electrode plug. A dielectric layer covers the capacitor. Above the dielectric layer is a first barrier layer. A via is created in the dielectric layer in which a plug is formed to couple to the second diffusion region. The via comprises substantially vertical sidewalls. A second barrier layer lines the sidewalls of the via. A conductive material is then deposited on the substrate, filling the via to form the plug. By providing the first and second barrier layers, the diffusion of hydrogen which can adversely impact the capacitor is reduced, thereby improving the reliability.Type: GrantFiled: February 25, 2003Date of Patent: February 22, 2005Assignee: Infineon Technologies AktiengesellschaftInventors: Andreas Hilliger, Uwe Wellhausen
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Patent number: 6855565Abstract: First and second semiconductor regions are formed separately from each other in a semiconductor substrate. A gate electrode is formed above the semiconductor substrate which lies between the first and second semiconductor regions. An interlayer insulating film is formed on the semiconductor substrate to cover the first and second semiconductor regions and the gate electrode. First and second lower electrodes are formed on the interlayer insulating film. A first contact plug is formed in the interlayer insulating film in contact with the first lower electrode. A second contact plug is formed in the interlayer insulating film in contact with the second lower electrode. A first ferroelectric film is formed on the first lower electrode. A first upper electrode is formed on the first ferroelectric film. A second ferroelectric film is formed on the second lower electrode. A second upper electrode is formed on the second ferroelectric film.Type: GrantFiled: November 14, 2003Date of Patent: February 15, 2005Assignees: Kabushiki Kaisha Toshiba, Infineon Technologies, AGInventors: Hiroyuki Kanaya, Andreas Hilliger
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Publication number: 20050020054Abstract: A method of forming a contact to an underlayer of a device includes the steps of forming a contact hole, forming a contact hole barrier layer of a barrier material in the contact hole of the device, etching the contact hole barrier layer on the bottom surface of the contact hole, depositing a liner material in the contact hole, and filling the contact hole with a conductive material. A device such as a semiconductor, passive device, capacitor or FeRAM is formed in accordance with the method. The portions of the contact hole barrier layer on the side walls of the contact hole inhibit lateral diffusion of hydrogen and/or oxygen. The contact hole barrier layer can be performed after a wet etch process to fill voids in an existing barrier layer caused by that process, or prior to the wet etch process to prevent damage to the existing barrier layer.Type: ApplicationFiled: July 22, 2003Publication date: January 27, 2005Inventors: Andreas Hilliger, Stefan Gernhardt, Uwe Wellhausen, Karl Hornik