Metal-insulator-semiconductor Capacitor, E.g., Trench Capacitor (epo) Patents (Class 257/E21.396)
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Patent number: 8435854Abstract: A method for forming a DRAM MIM capacitor stack having low leakage current involves the use of a first electrode that serves as a template for promoting the high k phase of a subsequently deposited dielectric layer. The high k dielectric layer comprises a doped material that can be crystallized after a subsequent annealing treatment. A metal oxide second electrode layer is formed above the dielectric layer. The metal oxide second electrode layer has a crystal structure that is compatible with the crystal structure of the dielectric layer. Optionally, a second electrode bulk layer is formed above the metal oxide second electrode layer.Type: GrantFiled: November 11, 2011Date of Patent: May 7, 2013Assignees: Intermolecular, Inc., Elpida Memory, Inc.Inventors: Sandra Malhotra, Hanhong Chen, Wim Deweerd, Hiroyuki Ode
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Patent number: 8426321Abstract: A process for making a dielectric material where a precursor polymer selected from poly(phenylene vinylene)polyacetylene, poly(p-phenylene), poly(thienylene vinylene), poly(1,4-naphthylene vinylene), and poly(p-pyridine vinylene) is energized said by exposure by radiation or increase in temperature to a level sufficient to eliminate said leaving groups contained within the precursor polymer, thereby transforming the dielectric material into a conductive polymer. The leaving group in the precursor polymer can be a chloride, a bromide, an iodide, a fluoride, an ester, an xanthate, a nitrile, an amine, a nitro group, a carbonate, a dithiocarbamate, a sulfonium group, an oxonium group, an iodonium group, a pyridinium group, an ammonium group, a borate group, a borane group, a sulphinyl group, or a sulfonyl group.Type: GrantFiled: May 2, 2011Date of Patent: April 23, 2013Assignee: Sandia CorporationInventors: Shawn M. Dirk, Ross S. Johnson, David R. Wheeler, Gregory R. Bogart
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Patent number: 8409955Abstract: A method of forming a semiconductor device includes the following processes. A groove is formed in a semiconductor substrate. A gate insulating film is formed on an inside wall of the groove. A buried gate electrode is formed on the gate insulating film and on a bottom portion of the groove. A cap insulating film covering the buried gate electrode is formed in an upper portion of the groove. The cap insulating film has a top surface which is different in level from a top surface of the semiconductor substrate. A first inter-layer insulating film is formed on the top surface of the semiconductor substrate and on the top surface of the cap insulating film. The first inter-layer insulating film with a flat top surface fills a gap in level between the top surface of the semiconductor substrate and the top surface of the cap insulating film.Type: GrantFiled: December 10, 2010Date of Patent: April 2, 2013Assignee: Elpida Memory, Inc.Inventor: Hiroyuki Fujimoto
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Patent number: 8410534Abstract: Disclosed are integrated circuit structures each having a silicon germanium film incorporated as a local interconnect and/or an electrical contact. These integrated circuit structures provide improved local interconnects between devices and/or increased capacitance to devices without significantly increasing structure surface area or power requirements. Specifically, disclosed are integrated circuit structures that incorporate a silicon germanium film as one or more of the following features: as a local interconnect between devices; as an electrical contact to a device (e.g., a deep trench capacitor, a source/drain region of a transistor, etc.); as both an electrical contact to a deep trench capacitor and a local interconnect between the deep trench capacitor and another device; and as both an electrical contact to a deep trench capacitor and as a local interconnect between the deep trench capacitor and other devices.Type: GrantFiled: February 8, 2012Date of Patent: April 2, 2013Assignee: International Business Machines CorporationInventor: Steven H. Voldman
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Patent number: 8405135Abstract: The present invention provides a 3D via capacitor and a method for forming the same. The capacitor includes an insulating layer on a substrate. The insulating layer has a via having sidewalls and a bottom. A first electrode overlies the sidewalls and at least a portion of the bottom of the via. A first high-k dielectric material layer overlies the first electrode. A first conductive plate is over the first high-k dielectric material layer. A second high-k dielectric material layer overlies the first conductive plate and leaves a remaining portion of the via unfilled. A second electrode is formed in the remaining portion of the via. The first conductive plate is substantially parallel to the first electrode and is not in contact with the first and second electrodes. An array of such 3D via capacitors is also provided.Type: GrantFiled: October 5, 2010Date of Patent: March 26, 2013Assignee: International Business Machines CorporationInventors: Chih-Chao Yang, Fen Chen, Baozhen Li
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Patent number: 8405136Abstract: A semiconductor device may include a semiconductor substrate and a plurality of first capacitor electrodes arranged in a plurality of parallel lines on the semiconductor substrate with each of the first capacitor electrodes extending away from the semiconductor substrate. A plurality of capacitor support pads may be provided with each capacitor support pad being connected to first capacitor electrodes of at least two adjacent parallel lines of the first capacitor electrodes and with adjacent capacitor support pads being spaced apart. A dielectric layer may be provided on each of the first capacitor electrodes, and a second capacitor electrode may be provided on the dielectric layer so that the dielectric layer is between the second capacitor electrode and each of the first capacitor electrodes. Related methods are also discussed.Type: GrantFiled: December 13, 2010Date of Patent: March 26, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Young-kyu Cho, Ki-vin Im, Yong-hee Choi
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Patent number: 8384140Abstract: A dual contact trench capacitor and design structure for a dual contact trench capacitor is provided. The structure includes a first plate extending from a trench and isolated from a wafer body, and a second plate extending from the trench and isolated from the wafer body and the first plate.Type: GrantFiled: July 29, 2008Date of Patent: February 26, 2013Assignee: International Business Machines CorporationInventors: Timothy W. Kemerer, Jenifer E. Lary, James S. Nakos, Steven M. Shank
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Patent number: 8350311Abstract: The present invention provides a technology capable of providing a semiconductor device having an MIM structure capacitor with improved reliability. The capacitor has a lower electrode, a capacitor insulating film, and an upper electrode. The lower electrode is comprised of a metal film embedded in an electrode groove formed in an insulating film over the main surface of a semiconductor substrate; and the upper electrode is comprised of a film stack of a TiN film (lower metal film) and a Ti film (cap metal film) formed over the TiN film (lower metal film).Type: GrantFiled: December 22, 2010Date of Patent: January 8, 2013Assignee: Renesas Electronics CorporationInventors: Yoshiyuki Kaneko, Hiroyasu Noso, Katsuhiko Hotta, Shinichi Ishida, Hidenori Suzuki, Sadayoshi Tateishi
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Patent number: 8343844Abstract: A method of manufacturing a capacitor of a semiconductor device includes forming a high-k dielectric pattern on a semiconductor substrate, the high-k dielectric pattern having a pillar shape including a hole therein, forming a lower electrode in the hole of the high-k dielectric pattern, locally forming a blocking insulating pattern on an upper surface of the lower electrode, and forming an upper electrode covering the high-k dielectric pattern and the blocking insulating pattern.Type: GrantFiled: March 25, 2011Date of Patent: January 1, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Wandon Kim, Jong Cheol Lee, Jin Yong Kim, Beom Seok Kim, Yong-Suk Tak, Kyuho Cho, Ohseong Kwon
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Patent number: 8319261Abstract: A semiconductor component having a semiconductor body having a first and a second side, an edge and an edge region adjacent to the edge in a lateral direction is described.Type: GrantFiled: January 5, 2011Date of Patent: November 27, 2012Assignee: Infineon Technologies Austria AGInventors: Anton Mauder, Stefan Sedlmaier, Ralf Erichsen, Hans Weber, Oliver Haeberlen, Franz Hirler
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Patent number: 8318576Abstract: A semiconductor process and apparatus provide a shallow trench isolation capacitor structure that is integrated in an integrated circuit and includes a bottom capacitor plate that is formed in a substrate layer below a trench opening, a capacitor dielectric layer and a recessed top capacitor plate that is covered by an STI region and isolated from cross talk by a sidewall dielectric layer.Type: GrantFiled: April 21, 2011Date of Patent: November 27, 2012Assignee: Freescale Semiconductor, Inc.Inventors: Mehul D. Shroff, Mark D. Hall
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Patent number: 8304829Abstract: Exemplary power semiconductor devices with features providing increased breakdown voltage and other benefits are disclosed.Type: GrantFiled: March 20, 2009Date of Patent: November 6, 2012Assignee: Fairchild Semiconductor CorporationInventors: Joseph A. Yedinak, Ashok Challa
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Publication number: 20120273861Abstract: The present invention relates to a method of depositing a gate dielectric, a method of preparing a MIS capacitor and the MIS capacitor. In the method of depositing the gate dielectric, a semiconductor substrate surface is preprocessed with oxygen plasma and nitrogen-containing plasma to form a nitrogen-containing oxide layer thereon. Then, a high-k gate dielectric layer is grown on the nitrogen-containing oxide layer surface by a plasma-enhanced atomic layer deposition process, and the oxide layer converts during the gate dielectric layer growth process into a buffer layer of a dielectric constant higher than SiO2. Then, a metal electrode is formed on both an upper layer and a lower layer of the thus-formed semiconductor construction, so that a MIS capacitor is prepared.Type: ApplicationFiled: June 8, 2011Publication date: November 1, 2012Applicant: SHANGHAN INSTITUTE OF MICROSYSTEM AND IMFORMATION TECHNOLOGY,CHINESE ACADEMInventors: Xinhong Cheng, Dawei Xu, Zhongjian Wang, Chao Xia, Dawei He, Zhaorui Song, Yuehui Yu
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Patent number: 8268695Abstract: Some embodiments include methods of making stud-type capacitors utilizing carbon-containing support material. Openings may be formed through the carbon-containing support material to electrical nodes, and subsequently conductive material may be grown within the openings. The carbon-containing support material may then be removed, and the conductive material utilized as stud-type storage nodes of stud-type capacitors. The stud-type capacitors may be incorporated into DRAM, and the DRAM may be utilized in electronic systems.Type: GrantFiled: August 13, 2008Date of Patent: September 18, 2012Assignee: Micron Technology, Inc.Inventors: Mark Kiehlbauch, Kevin R. Shea
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Patent number: 8263472Abstract: A semiconductor includes a bulk substrate of a first polarity type, a buried insulator layer disposed on the bulk substrate, an active semiconductor layer disposed on top of the buried insulator layer including a shallow trench isolation region and a diffusion region of the first polarity type, a band region of a second polarity type disposed directly beneath the buried insulator layer and forming a conductive path, a well region of the second polarity type disposed in the bulk substrate and in contact with the band region, a deep trench filled with a conductive material of the first polarity type disposed within the well region, and an electrostatic discharge (ESD) protect diode defined by a junction between a lower portion of the deep trench and the well region.Type: GrantFiled: December 13, 2011Date of Patent: September 11, 2012Assignee: International Business Machines CorporationInventors: John E. Barth, Jr., Kerry Bernstein
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Patent number: 8264047Abstract: A semiconductor component includes a semiconductor body having a first surface and a second surface, and having an inner region and an edge region. The semiconductor component further includes a pn-junction between a first semiconductor region of a first conductivity type and a second semiconductor region of a second conductivity type, the pn-junction extending in a lateral direction of the semiconductor body in the inner region. A first trench extends from the first side in the edge region into the semiconductor body. The trench has sidewalls that are arranged opposite to another and that are beveled relative to a horizontal direction of the semiconductor body.Type: GrantFiled: May 10, 2010Date of Patent: September 11, 2012Assignee: Infineon Technologies Austria AGInventor: Gerhard Schmidt
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Patent number: 8258040Abstract: It is disclosed a semiconductor device including a silicon substrate, provided with a plurality of cell active regions in a call region, an element isolation groove, formed in a portion, between any two of the plurality of cell active region, of the silicon substrate, a capacitor dielectric film, formed in the element isolation groove, a capacitor upper electrode, formed on the capacitor dielectric film, and configuring a capacitor together with the silicon substrate and the capacitor dielectric film. The semiconductor device is characterized in that a dummy active region is provided next to the cell region in the silicon substrate.Type: GrantFiled: November 22, 2010Date of Patent: September 4, 2012Assignee: Fujitsu Semiconductor LimitedInventor: Tetsuya Ito
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Patent number: 8247305Abstract: A method of forming a capacitor structure includes forming a pad oxide layer overlying a substrate, a nitride layer overlying the pad oxide layer, an interlayer dielectric layer overlying the nitride layer, and a patterned polysilicon mask layer overlying the interlayer dielectric layer. The method then applies a first RIE process to form a trench region through a portion of the interlayer dielectric layer using the patterned polysilicon mask layer and maintaining the first RIE to etch through a portion of the nitride layer and through a portion of the pad oxide layer. The method stops the first RIE when a portion of the substrate has been exposed. The method then forms an oxide layer overlying the exposed portion of the substrate and applies a second RIE process to continue to form the trench region by removing the oxide layer and removing a portion of the substrate to a predetermined depth.Type: GrantFiled: December 3, 2010Date of Patent: August 21, 2012Assignee: Semiconductor Manufacturing International (Shanghai) CorporationInventors: Kuo-Chang Liao, Weijun Song, Dang Quan Liao
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Patent number: 8227846Abstract: A decoupling capacitor includes a pair of MOS capacitors formed in wells of opposite plurality. Each MOS capacitor has a set of well-ties and a high-dose implant, allowing high frequency performance under accumulation or depletion biasing. The top conductor of each MOS capacitor is electrically coupled to the well-ties of the other MOS capacitor and biased consistently with logic transistor wells. The well-ties and/or the high-dose implants of the MOS capacitors exhibit asymmetry with respect to their dopant polarities.Type: GrantFiled: February 12, 2010Date of Patent: July 24, 2012Assignee: Advanced Micro Devices, Inc.Inventor: Andrew E. Carlson
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Patent number: 8227847Abstract: The present invention describes an ultra High-Density Capacitor design, integrated in a semiconductor substrate, preferably a Si substrate, by using both wafer sides. The capacitors are pillar-shaped and comprise electrodes (930,950) separated by a dielectric layer (940). Via connections (920) are provided in trenches that go through the whole thickness of the wafer.Type: GrantFiled: February 17, 2009Date of Patent: July 24, 2012Assignee: NXP B.V.Inventors: Francois Neuilly, Francois Le Cornec
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Patent number: 8222103Abstract: Generally, the subject matter disclosed herein relates to a semiconductor device with embedded low-k metallization. A method is disclosed that includes forming a plurality of copper metallization layers that are coupled to a plurality of logic devices in a logic area of a semiconductor device and, after forming the plurality of copper metallization layers, forming a plurality of capacitors in a memory array of the semiconductor device. The capacitors are formed using a non-low-k dielectric material (k value greater than 3), while the copper metallization layers are formed in layers of low-k dielectric material (k value less than 3).Type: GrantFiled: February 15, 2011Date of Patent: July 17, 2012Assignee: GLOBALFOUNDRIES Inc.Inventors: Peter Baars, Till Schloesser
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Patent number: 8222104Abstract: A method of forming an integrated circuit device includes forming a plurality of deep trench decoupling capacitors on a first substrate; forming a plurality of active circuit devices on a second substrate; bonding the second substrate to the first substrate; and forming electrical connections between the deep trench capacitors and the second substrate.Type: GrantFiled: July 27, 2009Date of Patent: July 17, 2012Assignee: International Business Machines CorporationInventors: Roger A. Booth, Jr., Kangguo Cheng, Ravi M. Todi, Geng Wang
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Patent number: 8164132Abstract: The invention includes methods of forming semiconductor constructions and methods of forming pluralities of capacitor devices. An exemplary method of the invention includes forming conductive material within openings in an insulative material to form capacitor electrode structures. A lattice is formed in physical contact with at least some of the electrode structures, a protective cap is formed over the lattice, and subsequently some of the insulative material is removed to expose outer surfaces of the electrode structures. The lattice can alleviate toppling or other loss of structural integrity of the electrode structures, and the protective cap can protect covered portions of the insulative material from the etch. After the outer sidewalls of the electrode structures are exposed, the protective cap is removed. The electrode structures are then incorporated into capacitor constructions.Type: GrantFiled: March 28, 2011Date of Patent: April 24, 2012Assignee: Round Rock Research, LLCInventor: H. Montgomery Manning
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Patent number: 8143659Abstract: A capacitor is described which includes a substrate with a doped area of the substrate forming a first electrode of the capacitor. A plurality of trenches is arranged in the doped area of the substrate, the plurality of trenches forming a second electrode of the capacitor. An electrically insulating layer is arranged between each of the plurality of trenches and the doped area for electrically insulating the trenches from the doped area. The doped area includes first open areas and at least one second open area arranged between neighboring trenches of the plurality of trenches, wherein the at least one open area is arranged below the at least one substrate contact. A shortest first distance between neighboring trenches is separated by the first open areas and is shorter than a shortest second distance between neighboring trenches separated by the at least one second open area.Type: GrantFiled: April 14, 2008Date of Patent: March 27, 2012Assignee: Infineon Technologies AGInventor: Stefan Pompl
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Patent number: 8129772Abstract: Disclosed are integrated circuit structures each having a silicon germanium film incorporated as a local interconnect and/or an electrical contact. These integrated circuit structures provide improved local interconnects between devices and/or increased capacitance to devices without significantly increasing structure surface area or power requirements. Specifically, disclosed are integrated circuit structures that incorporate a silicon germanium film as one or more of the following features: as a local interconnect between devices; as an electrical contact to a device (e.g., a deep trench capacitor, a source/drain region of a transistor, etc.); as both an electrical contact to a deep trench capacitor and a local interconnect between the deep trench capacitor and another device; and as both an electrical contact to a deep trench capacitor and as a local interconnect between the deep trench capacitor and other devices.Type: GrantFiled: June 15, 2010Date of Patent: March 6, 2012Assignee: International Business Machines CorporationInventor: Steven H. Voldman
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Publication number: 20120049263Abstract: A semiconductor device includes a semiconductor substrate having a conductive type, a source metal layer, a gate metal layer, at least one transistor device, a heavily doped region having the conductive type, a capacitor dielectric layer, a conductive layer. The source metal layer and the gate metal layer are disposed on the semiconductor substrate. The transistor device is disposed in the semiconductor substrate under the source metal layer. The heavily doped region, the capacitor dielectric layer and the conductive layer constitute a capacitor structure, disposed under the gate metal layer, and the capacitor structure is electrically connected between a source and a drain of the transistor device.Type: ApplicationFiled: January 19, 2011Publication date: March 1, 2012Inventor: Wei-Chieh Lin
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Patent number: 8080851Abstract: A semiconductor structure is disclosed. The semiconductor structure includes a bulk substrate of a first polarity type, a buried insulator layer disposed on the bulk substrate, an active semiconductor layer disposed on top of the buried insulator layer including a shallow trench isolation region and a diffusion region of the first polarity type, a band region of a second polarity type disposed directly beneath the buried insulator layer and forming a conductive path, a well region of the second polarity type disposed in the bulk substrate and in contact with the band region, a deep trench filled with a conductive material of the first polarity type disposed within the well region, and an electrostatic discharge (ESD) protect diode defined by a junction between a lower portion of the deep trench and the well region.Type: GrantFiled: August 29, 2008Date of Patent: December 20, 2011Assignee: International Business Machines CorporationInventors: John E. Barth, Jr., Kerry Bernstein
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Patent number: 8080457Abstract: A fabrication method of a trenched power semiconductor structure with low gate charge is provided. Firstly, a substrate is provided. Then, a gate trench is formed in the substrate. Afterward, a dielectric layer is formed on the inner surfaces of the gate trench. Then, a spacer is formed on the dielectric layer covering the sidewall of the gate trench. Thereafter, a plug structure is formed in the space at the bottom of the gate trench, which is defined by the spacer. Then, a portion of the spacer is removed with the dielectric structure and the plug structure as an etching mask. Thereafter, a portion of the dielectric layer is removed with the remained spacer as an etching mask to expose the inner surface of the upper portion of the gate trench. Afterward, with the remained spacer being kept, a gate dielectric layer is formed on the inner surface of the upper portion of the gate trench, and then a polysilicon gate is filled into the upper portion of the gate trench.Type: GrantFiled: November 2, 2010Date of Patent: December 20, 2011Assignee: Great Power Semiconductor Corp.Inventor: Hsiu-Wen Hsu
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Patent number: 8053823Abstract: A structure is provided herein which includes an array of trench capacitors having at least portions disposed below a buried oxide layer of an SOI substrate. Each trench capacitor shares a common unitary buried capacitor plate which includes at least a portion of a first unitary semiconductor region disposed below the buried oxide layer. An upper boundary of the buried capacitor plate defines a plane parallel to a major surface of the substrate which extends laterally throughout the array of trench capacitors. In a particular embodiment, which starts from either an SOI or a bulk substrate, trenches of the array and a contact hole are formed simultaneously, such that the contact hole extends to substantially the same depth as the trenches. The contact hole preferably has substantially greater width than the trenches such that the conductive contact via can be formed simultaneously by processing used to form trench capacitors extending along walls of the trenches.Type: GrantFiled: March 8, 2005Date of Patent: November 8, 2011Assignee: International Business Machines CorporationInventors: Kangguo Cheng, Ramachandra Divakaruni, Herbert L. Ho, Carl J. Radens
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Patent number: 8003461Abstract: A method of fabricating an efuse structure, a resistor structure and a transistor structure. First, a work function metal layer, a polysilicon layer and a first hard mask layer are formed to cover a transistor region, a resistor region and an e-fuse region on a substrate. Then, the work function metal layer on the resistor region and the efuse region is removed by using a first photomask. Later, a gate, a resistor, an efuse are formed in the transistor region, the resistor region and the efuse region respectively. After that, a dielectric layer aligning with the top surface of the gate is formed. Later, the polysilicon layer in the gate is removed by taking a second hard mask as a mask to form a recess. Finally, a metal layer fills up the recess.Type: GrantFiled: February 4, 2010Date of Patent: August 23, 2011Assignee: United Microelectronics Corp.Inventors: Che-Hua Hsu, Zhi-Cheng Lee, Cheng-Guo Chen, Shao-Hua Hsu
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Patent number: 7989362Abstract: Electronic apparatus and methods of forming the electronic apparatus include a hafnium lanthanide oxynitride film on a substrate for use in a variety of electronic systems. The hafnium lanthanide oxynitride film may be structured as one or more monolayers. Metal electrodes may be disposed on a dielectric containing a hafnium lanthanide oxynitride film.Type: GrantFiled: July 20, 2009Date of Patent: August 2, 2011Assignee: Micron Technology, Inc.Inventors: Leonard Forbes, Kie Y. Ahn, Arup Bhattacharyya
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Patent number: 7956400Abstract: An integrated metal-insulator-metal capacitor is formed so that there is an extension portion of its top plate that does not face any portion of the bottom plate, and an extension portion of its bottom plate that does not face any portion of the top plate. Vias connecting the MIM capacitor plates to conductors in an overlying metallization layer are formed so as to contact the extension portions of the top and bottom plates. Etching of the via holes is simplified because it is permissible for the via holes to punch through the extension portions of the capacitor plates. The bottom plate of the MIM capacitor is inlaid. The top plate of the MIM capacitor may be inlaid.Type: GrantFiled: June 15, 2006Date of Patent: June 7, 2011Assignee: Freescale Semiconductor, Inc.Inventor: Brad Smith
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Patent number: 7955945Abstract: A process for making a dielectric material where a precursor polymer selected from poly(phenylene vinylene) polyacetylene, poly(p-phenylene), poly(thienylene vinylene), poly(1,4-naphthylene vinylene), and poly(p-pyridine vinylene) is energized said by exposure by radiation or increase in temperature to a level sufficient to eliminate said leaving groups contained within the precursor polymer, thereby transforming the dielectric material into a conductive polymer. The leaving group in the precursor polymer can be a chloride, a bromide, an iodide, a fluoride, an ester, an xanthate, a nitrile, an amine, a nitro group, a carbonate, a dithiocarbamate, a sulfonium group, an oxonium group, an iodonium group, a pyridinium group, an ammonium group, a borate group, a borane group, a sulphinyl group, or a sulfonyl group.Type: GrantFiled: September 28, 2010Date of Patent: June 7, 2011Assignee: Sandia CorporationInventors: Shawn M. Dirk, Ross S. Johnson, David R. Wheeler, Gregory R. Bogart
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Patent number: 7943449Abstract: A method for producing a semiconductor structure and a semiconductor component are described.Type: GrantFiled: September 30, 2008Date of Patent: May 17, 2011Assignee: Infineon Technologies Austria AGInventors: Anton Mauder, Stefan Sedlmaier, Ralf Erichsen, Hans Weber, Oliver Haeberlen, Franz Hirler
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Patent number: 7943474Abstract: A method for forming a memory device is provided by first forming at least one trench in a semiconductor substrate. Next, a lower electrode is formed in the at least one trench, and thereafter a conformal dielectric layer is formed on the lower electrode. An upper electrode is then formed on the conformal dielectric layer. The forming of the upper electrode may include a conformal deposition of metal nitride layer, and a non-conformal deposition of an electrically conductive material atop the metal nitride layer, in which the electrically conductive material encloses the at least one trench.Type: GrantFiled: February 24, 2009Date of Patent: May 17, 2011Assignee: International Business Machines CorporationInventors: Thomas W. Dyer, Keith Kwong Hon Wong, Mahender Kumar
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Publication number: 20110108900Abstract: A method of forming a field effect transistor (FET) capacitor includes forming a channel region; forming a gate stack over the channel region; forming a first extension region on a first side of the gate stack, the first extension region being formed by implanting a first doping material at a first angle such that a shadow region exists on a second side of the gate stack; and forming a second extension region on the second side of the gate stack, the second extension region being formed by implanting a second doping material at a second angle such that a shadow region exists on the first side of the gate stack.Type: ApplicationFiled: November 12, 2009Publication date: May 12, 2011Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Leland Chang, Chung-Hsun Lin, Brian L. Ji, Jeffrey W. Sleight
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Publication number: 20110101435Abstract: The embodiment provides a buried bit line process and scheme. The buried bit line is disposed in a trench formed in a substrate. The buried bit line includes a diffusion region formed in a portion of the substrate adjacent the trench. A blocking layer is formed on a portion sidewall of the trench. A conductive plug is formed in the trench, covering sidewalls of the diffusion region and the blocking layer.Type: ApplicationFiled: November 5, 2010Publication date: May 5, 2011Applicant: TAIWAN MEMORY CORPORATIONInventors: Le-Tien JUNG, Yung-Chang LIN
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Patent number: 7935998Abstract: A structure and method of forming a body contact for a semiconductor-on-insulator trench device. The method including: forming set of mandrels on a top surface of a substrate, each mandrel of the set of mandrels arranged on a different corner of a polygon and extending above the top surface of the substrate, a number of mandrels in the set of mandrels equal to a number of corners of the polygon; forming sidewall spacers on sidewalls of each mandrel of the set of mandrels, sidewalls spacers of each adjacent pair of mandrels merging with each other and forming a unbroken wall defining an opening in an interior region of the polygon, a region of the substrate exposed in the opening; etching a contact trench in the substrate in the opening; and filling the contact trench with an electrically conductive material to form the contact.Type: GrantFiled: March 24, 2008Date of Patent: May 3, 2011Assignee: International Business Machines CorporationInventors: Kangguo Cheng, Ramachandra Divakaruni
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Publication number: 20110095396Abstract: An improved semiconductor device, including a capacitor structure. The device has a first electrode member, which has a first length and a first width. The device also has a second electrode member, which has a second length and a second width. Additionally, the device includes a capacitor dielectric material provided between the first electrode member and the second electrode member according to a specific embodiment. Depending upon the embodiment, the capacitor dielectric material is made of a suitable material or materials such as Al2O3, HfO2, SiN, NO, Al2O3/HfO2, AlNyOx, ZrO2, any combinations of these, and the like. The device further includes a plurality of silicon nanocrystals spatially disposed in an area associated with the first width and the first length of the first electrode member. Each one of the nanocrystals has a size of about 20 nanometers and less according to a specific embodiment.Type: ApplicationFiled: September 21, 2010Publication date: April 28, 2011Applicant: Semiconductor Manufacturing International (Shanghai) CorporationInventor: MIENO FUMITAKE
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Patent number: 7923815Abstract: By controlling buried plate doping level and bias condition, different capacitances can be obtained from capacitors on the same chip with the same layout and deep trench process. The capacitors may be storage capacitors of DRAM/eDRAM cells. The doping concentration may be less than 3E19cm?3, a voltage difference between the biases of the buried electrodes may be at least 0.5V, and a capacitance of one capacitor may be at least 1.2 times, such as 2.0 times the capacitance of another capacitor.Type: GrantFiled: January 7, 2008Date of Patent: April 12, 2011Assignee: International Business Machines CorporationInventors: Geng Wang, Kangguo Cheng, Johnathan E. Faltermeier, Paul C. Parries
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Patent number: 7923330Abstract: A method for manufacturing a semiconductor device includes providing a semiconductor substrate including a first surface and a second surface which is arranged opposite to the first surface. The semiconductor substrate includes a plurality of trench structures extending from the first surface into the semiconductor substrate. The thickness of the semiconductor substrate is then reduced by removing semiconductor material at the second surface to obtain a processed second surface with exposed bottom portions of the trench structures. At least a first mask is formed on the processed second surface in a self-aligned manner with respect to the bottom portions of the trench structures, and doping regions are formed in the semiconductor substrate between the trench structures.Type: GrantFiled: October 2, 2007Date of Patent: April 12, 2011Assignee: Infineon Technologies Austria AGInventor: Hans Martin Weber
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Patent number: 7915136Abstract: The invention includes methods of forming semiconductor constructions and methods of forming pluralities of capacitor devices. An exemplary method of the invention includes forming conductive material within openings in an insulative material to form capacitor electrode structures. A lattice is formed in physical contact with at least some of the electrode structures, a protective cap is formed over the lattice, and subsequently some of the insulative material is removed to expose outer surfaces of the electrode structures. The lattice can alleviate toppling or other loss of structural integrity of the electrode structures, and the protective cap can protect covered portions of the insulative material from the etch. After the outer sidewalls of the electrode structures are exposed, the protective cap is removed. The electrode structures are then incorporated into capacitor constructions.Type: GrantFiled: July 30, 2009Date of Patent: March 29, 2011Assignee: Round Rock Research, LLCInventor: H. Montgomery Manning
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Patent number: 7910491Abstract: A method of filling a trench is described and includes depositing a dielectric liner with a high ratio of silicon oxide to dielectric liner etch rate in fluorine-containing etch chemistries. Silicon oxide is deposited within the trench and etched to reopen or widen a gap near the top of the trench. The dielectric liner protects the underlying substrate during the etch process so the gap can be made wider. Silicon oxide is deposited within the trench again to substantially fill the trench.Type: GrantFiled: May 7, 2009Date of Patent: March 22, 2011Assignee: Applied Materials, Inc.Inventors: Young Soo Kwon, Bi Jang, Anchuan Wang, Young S. Lee, Mihaela Balseanu, Li-Qun Xia, Jin Ho Jeon
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Patent number: 7910442Abstract: A method including partially etching a first portion of a first layer, wherein the first layer is a conductive layer, is provided. The method further includes removing at least a portion of a second layer. The method further includes completing etching of said first portion of the conductive layer so that said first portion of the conductive layer is removed. The method further includes completing formation of the semiconductor device.Type: GrantFiled: July 24, 2007Date of Patent: March 22, 2011Assignee: Freescale Semiconductor, Inc.Inventors: William J. Taylor, Jr., Cristiano Capasso, Srikanth B. Samavedam, James K. Schaeffer
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Patent number: 7902582Abstract: Electronic apparatus and methods of forming the electronic apparatus include a tantalum lanthanide oxynitride film on a substrate for use in a variety of electronic systems. The tantalum lanthanide oxynitride film may be structured as one or more monolayers. Metal electrodes may be disposed on a dielectric containing a tantalum lanthanide oxynitride film.Type: GrantFiled: May 21, 2009Date of Patent: March 8, 2011Assignee: Micron Technology, Inc.Inventors: Leonard Forbes, Kie Y. Ahn, Arup Bhattacharyya
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Method for producing a dielectric interlayer and storage capacitor with such a dielectric interlayer
Patent number: 7880212Abstract: A dielectric interlayer, especially for a storage capacitor, is formed from a layer sequence subjected to a temperature process, wherein the layer sequence has at least a first metal oxide layer and a second metal oxide layer formed by completely oxidizing a metal nitride layer to higher valency.Type: GrantFiled: August 25, 2008Date of Patent: February 1, 2011Assignee: Qimonda AGInventors: Bernd Hintze, Henry Bernhardt, Frank Bernhardt -
Patent number: 7871883Abstract: The invention aims at enabling leakage current characteristics and a step coverage property to be improved by depositing a hafnium silicate film by utilizing an atomic layer evaporation method using a hafnium raw material, a silicon raw material and an oxidizing agent. Disclosed herein is a method of manufacturing a semiconductor device having a trench capacitor including a first electrode formed on an inner surface of a trench, a capacitor insulating film formed on a surface of the first electrode, and a second electrode formed on a surface of the capacitor insulating film. The method includes the step of depositing the capacitor insulating film in a form of a hafnium silicate film by utilizing an atomic layer deposition method using a hafnium raw material, a silicon raw material and an oxidizing agent.Type: GrantFiled: September 11, 2006Date of Patent: January 18, 2011Assignee: Sony CorporationInventor: Takashi Ando
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Patent number: 7871891Abstract: A semiconductor device may include a semiconductor substrate and a plurality of first capacitor electrodes arranged in a plurality of parallel lines on the semiconductor substrate with each of the first capacitor electrodes extending away from the semiconductor substrate. A plurality of capacitor support pads may be provided with each capacitor support pad being connected to first capacitor electrodes of at least two adjacent parallel lines of the first capacitor electrodes and with adjacent capacitor support pads being spaced apart. A dielectric layer may be provided on each of the first capacitor electrodes, and a second capacitor electrode may be provided on the dielectric layer so that the dielectric layer is between the second capacitor electrode and each of the first capacitor electrodes. Related methods are also discussed.Type: GrantFiled: June 12, 2008Date of Patent: January 18, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Young-kyu Cho, Ki-vin Im, Yong-hee Choi
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Patent number: 7863663Abstract: Techniques for manufacturing an electronic device. In certain embodiments, a substrate includes a lower patterned layer that has a target conductor. A hybrid-vertical contact may be disposed directly on the target conductor. The hybrid vertical contact may include a lower-vertical contact directly on the target conductor and an upper-vertical contact directly on the lower-vertical contact. The upper-vertical contact may have an upper width that is greater than a lower width of the lower-vertical contact.Type: GrantFiled: April 7, 2006Date of Patent: January 4, 2011Assignee: Micron Technology, Inc.Inventor: Jonathan Doebler
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Patent number: 7858486Abstract: The invention includes methods and integrated circuitry. Pillars project outwardly from openings in a first material over individual capacitor storage node locations. Insulative material is deposited over the first material laterally about sidewalls of the projecting pillars, and is anisotropically etched effective to expose underlying first material and leave electrically insulative material received laterally about the sidewalls of the projecting pillars. Openings are formed within a second material to the pillars. The pillars are etched from the substrate through the openings in the second material, and individual capacitor electrodes are formed within the openings in electrical connection with the storage node locations. The individual capacitor electrodes have the anisotropically etched insulative material received laterally about their outer sidewalls. The individual capacitor electrodes are incorporated into a plurality of capacitors. Other implementations and aspects are contemplated.Type: GrantFiled: April 8, 2009Date of Patent: December 28, 2010Assignee: Micron Technology, Inc.Inventor: H. Montgomery Manning