Conductor-insulator-conductor Capacitor On Semiconductor Substrate (epo) Patents (Class 257/E29.343)
  • Patent number: 8344438
    Abstract: The present invention refers to an electrode comprising a first metallic layer and a compound comprising at least one of a nitride, oxide, and oxynitride of a second metallic material.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: January 1, 2013
    Assignee: Qimonda AG
    Inventors: Uwe Schroeder, Stefan Jakschik, Johannes Heitmann, Tim Boescke, Annette Saenger
  • Publication number: 20120326275
    Abstract: Some embodiments include capacitors. The capacitors may include container-shaped storage node structures that have, along a cross-section, a pair of upwardly-extending sidewalls. Individual sidewalls may have a narrower segment over a wider segment. Capacitor dielectric material and capacitor electrode material may be along the narrower and wider segments of the sidewalls. Some embodiments include methods of forming capacitors in which an initial container-shaped storage node structure is formed to have a pair of upwardly-extending sidewalls along a cross-section, with the sidewalls being of thickness that is substantially constant or increasing from a base to a top of the initial structure. The initial structure is then converted into a modified storage node structure by reducing thicknesses of upper segments of the sidewalls while leaving thicknesses of lower segments of the sidewalls substantially unchanged.
    Type: Application
    Filed: September 7, 2012
    Publication date: December 27, 2012
    Applicant: MICRON TECHNOLOGY, INC.
    Inventors: Duane M. Goodner, Sanjeev Sapra, Darwin Franseda Fan
  • Publication number: 20120326274
    Abstract: Semiconductor structures having integrated quadruple-wall capacitors for eDRAM and methods to form the same are described. For example, an embedded quadruple-wall capacitor includes a trench disposed in a first dielectric layer disposed above a substrate. The trench has a bottom and sidewalls. A quadruple arrangement of metal plates is disposed at the bottom of the trench, spaced apart from the sidewalls. A second dielectric layer is disposed on and conformal with the sidewalls of the trench and the quadruple arrangement of metal plates. A top metal plate layer is disposed on and conformal with the second dielectric layer.
    Type: Application
    Filed: June 21, 2011
    Publication date: December 27, 2012
    Inventors: Brian S. Doyle, Uday Shah, Satyarth Suri, Ramanan V. Chebiam
  • Publication number: 20120319239
    Abstract: A semiconductor structure includes a through-substrate-via (TSV) structure disposed in a substrate. A first etch stop layer is disposed over the TSV structure. A first dielectric layer is disposed in contact with the first etch stop layer. A first conductive structure is disposed through the first etch stop layer and the first dielectric layer. The first conductive structure is electrically coupled with the TSV structure. The TSV structure is substantially wider than the first conductive structure. A second etch stop layer is disposed in contact with the first dielectric layer. A metal-insulator-metal (MIM) capacitor structure is disposed in contact with the second etch stop layer.
    Type: Application
    Filed: June 15, 2011
    Publication date: December 20, 2012
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Chun Hua CHANG, Sung-Hui HUANG, Der-Chyang YEH
  • Publication number: 20120319238
    Abstract: An integrated circuit device and methods of manufacturing the same are disclosed. In an example, integrated circuit device includes a capacitor having a doped region disposed in a semiconductor substrate, a dielectric layer disposed over the doped region, and an electrode disposed over the dielectric layer. At least one post feature embedded in the electrode.
    Type: Application
    Filed: June 14, 2011
    Publication date: December 20, 2012
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Hak-Lay Chuang, Ming Zhu
  • Patent number: 8324710
    Abstract: According to one embodiment, a capacitor includes a substrate, a first electrode, a second electrode, and a first dielectric portion. The substrate includes an insulating layer and a semiconductor layer provided on the insulating layer. The semiconductor layer includes a dummy active region electrically isolated from an active region including an active element. The first electrode and the second electrode are located to oppose each other above the dummy active region. The first dielectric portion is provided between the first electrode and the second electrode.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: December 4, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshiyuki Shimizu, Masayuki Sugiura
  • Publication number: 20120286394
    Abstract: A metal oxide metal (MOM) capacitor includes an outer conducting structure defined in a plurality of metal layers and a plurality of via layers of an integrated circuit including first opposing side walls, second opposing side walls, a cavity with first and second openings, and openings in the first opposing side walls. An inner conducting structure is defined in the plurality of metal layers and the plurality of via layers of the integrated circuit. The inner conducting structure is arranged in the cavity of the outer conducting structure and includes a body, and conducting extensions that extend from the body through the openings in the first opposing side walls. Oxide is arranged between the outer conducting structure and the inner conducting structure.
    Type: Application
    Filed: May 7, 2012
    Publication date: November 15, 2012
    Inventor: Sehat Sutardja
  • Publication number: 20120286393
    Abstract: A finger metal oxide metal (MOM) capacitor includes an outer conducting structure defined in a plurality of metal layers and a plurality of via layers of an integrated circuit. First and second side portions include a plurality of first and second finger sections extending in the plurality of metal layers and first and second hole vias connecting the first and second finger sections, respectively. A middle portion connects the first and second side portions. An inner conducting structure is defined in the plurality of metal layers and the plurality of via layers of the integrated circuit. A plurality of “T”-shaped sections are defined in the plurality of metal layers and third hole vias connecting the plurality of “T”-shaped sections. Middle portions of the plurality of “T”-shaped sections extend towards the middle portion and between the first side portion and the second side portion of the outer conducting structure.
    Type: Application
    Filed: May 7, 2012
    Publication date: November 15, 2012
    Inventors: Hung Sheng Lin, Shingo Hatanaka, Shafiq M. Jamal
  • Patent number: 8310061
    Abstract: A stacked integrated circuit having a first die with a first surface and a second die with a second surface facing the first surface, the stacked integrated circuit includes a capacitor. The capacitor is formed by a first conducting plate on a region of the first surface, a second conducting plate on a region of the second surface substantially aligned with the first conducting plate, and a dielectric between the first conducting electrode and the second conducting electrode.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: November 13, 2012
    Assignee: QUALCOMM Incorporated
    Inventor: Arvind Chandrasekaran
  • Patent number: 8304854
    Abstract: Disclosed are a semiconductor integrated circuit chip, a multilayer chip capacitor, and a semiconductor integrated circuit chip package. The semiconductor integrated circuit chip includes a semiconductor integrated circuit chip body, an input/output terminal disposed on the outside of the semiconductor integrated circuit chip body, and a decoupling capacitor disposed at a side face of the semiconductor integrated circuit chip body and electrically connected to the input/output terminal. The semiconductor integrated circuit chip cab be obtained, which can maintain an impedance of a power distribution network below a target impedance in a wide frequency range, particularly at a high frequency, by minimizing an inductance between a decoupling capacitor and a semiconductor integrated circuit chip.
    Type: Grant
    Filed: November 13, 2008
    Date of Patent: November 6, 2012
    Assignees: Samsung Electro-Mechanics Co., Ltd., Clemson University
    Inventors: Byoung Hwa Lee, Min Cheol Park, Ho Cheol Kwak, Haixin Ke, Todd Harvey Hubing
  • Publication number: 20120273921
    Abstract: A semiconductor device includes a dielectric layer, where the dielectric layer includes a metal oxide layer, a metal nitride carbide layer including hydrogen therein, and a reduction prevention layer inserted between the metal nitride carbide layer and the dielectric layer.
    Type: Application
    Filed: December 21, 2011
    Publication date: November 1, 2012
    Inventors: Kwan-Woo DO, Kee-Jeung Lee, Kyung-Woong Park, Kun-Hoon Baek, Ji-Hoon Ahn, Woo-Young Park
  • Patent number: 8299576
    Abstract: A switched-capacitor circuit on a semiconductor device may include accurately matched, high-density metal-to-metal capacitors, using top-plate-to-bottom-plate fringe-capacitance for obtaining the desired capacitance values. A polysilicon plate may be inserted below the bottom metal layer, and bootstrapped to the top plate of each capacitor in order to minimize and/or eliminate the parasitic top-plate-to-substrate capacitance. This may free up the bottom metal layer to be used in forming additional fringe-capacitance, thereby increasing capacitance density. By forming each capacitance solely based on fringe-capacitance from the top plate to the bottom plate, no parallel-plate-capacitance is used, which may reduce capacitor mismatch. Parasitic bottom plate capacitance to the substrate may also be eliminated, with only a small capacitance to the bootstrapped polysilicon plate remaining.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: October 30, 2012
    Assignee: Standard Microsystems Corporation
    Inventor: Scott C. McLeod
  • Patent number: 8299507
    Abstract: It is made possible to optimize the effective work function of the metal for a junction and suppress the resistance as far as possible at the interface between a semiconductor or a dielectric material and a metal. A semiconductor device includes: a semiconductor film; a Ti oxide film formed on the semiconductor film, and including at least one element selected from the group consisting of V, Cr, Mn, Fe, Co, Ni, Nb, Mo, Tc, Ru, Rh, Pd, Ta, W, Re, Os, Ir, and Pt; and a metal film formed on the Ti oxide film.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: October 30, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tatsuo Shimizu, Atsuhiro Kinoshita
  • Patent number: 8299577
    Abstract: A switched-capacitor circuit on a semiconductor device may include accurately matched, high-density metal-to-metal capacitors, using top-plate-to-bottom-plate fringe-capacitance for obtaining the desired capacitance values. A polysilicon plate may be inserted below the bottom metal layer, and bootstrapped to the top plate of each capacitor in order to minimize and/or eliminate the parasitic top-plate-to-substrate capacitance. This may free up the bottom metal layer to be used in forming additional fringe-capacitance, thereby increasing capacitance density. By forming each capacitance solely based on fringe-capacitance from the top plate to the bottom plate, no parallel-plate-capacitance is used, which may reduce capacitor mismatch. Parasitic bottom plate capacitance to the substrate may also be eliminated, with only a small capacitance to the bootstrapped polysilicon plate remaining.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: October 30, 2012
    Assignee: Standard Microsystems Corporation
    Inventor: Scott C. McLeod
  • Patent number: 8299575
    Abstract: A switched-capacitor circuit on a semiconductor device may include accurately matched, high-density metal-to-metal capacitors, using top-plate-to-bottom-plate fringe-capacitance for obtaining the desired capacitance values. A polysilicon plate may be inserted below the bottom metal layer, and bootstrapped to the top plate of each capacitor in order to minimize and/or eliminate the parasitic top-plate-to-substrate capacitance. This may free up the bottom metal layer to be used in forming additional fringe-capacitance, thereby increasing capacitance density. By forming each capacitance solely based on fringe-capacitance from the top plate to the bottom plate, no parallel-plate-capacitance is used, which may reduce capacitor mismatch.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: October 30, 2012
    Assignee: Standard Microsystems Corporation
    Inventor: Scott C. McLeod
  • Publication number: 20120267757
    Abstract: A method for using a metal bilayer is disclosed. First, a bottom electrode is provided. Second, a dielectric layer which is disposed on and is in direct contact with the lower electrode is provided. Then, a metal bilayer which serves as a top electrode in a capacitor is provided. The metal bilayer is disposed on and is in direct contact with the dielectric layer. The metal bilayer consists of a noble metal in direct contact with the dielectric layer and a metal nitride in direct contact with the noble metal.
    Type: Application
    Filed: April 20, 2011
    Publication date: October 25, 2012
    Inventors: Vassil Antonov, Vishwanath Bhat, Chris Carlson
  • Publication number: 20120267754
    Abstract: A structure and method is provided for fabricating isolated capacitors. The method includes simultaneously forming a plurality of deep trenches and one or more isolation trenches surrounding a group or array of the plurality of deep trenches through a SOI and doped poly layer, to an underlying insulator layer. The method further includes lining the plurality of deep trenches and one or more isolation trenches with an insulator material. The method further includes filling the plurality of deep trenches and one or more isolation trenches with a conductive material on the insulator material. The deep trenches form deep trench capacitors and the one or more isolation trenches form one or more isolation plates that isolate at least one group or array of the deep trench capacitors from another group or array of the deep trench capacitors.
    Type: Application
    Filed: June 26, 2012
    Publication date: October 25, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Oh-Jung KWON, Junedong LEE, Paul C. PARRIES, Dominic J. SCHEPIS
  • Publication number: 20120267760
    Abstract: A capacitor and a manufacturing method thereof are provided. The capacitor includes a first electrode, a first metal layer, a dielectric layer and a second electrode. The first electrode is disposed on a substrate. The first metal layer is disposed on the first electrode. The dielectric layer is disposed on the first metal layer, wherein the material of the first metal layer does not react with the material of the dielectric layer. The second electrode is disposed on the dielectric layer.
    Type: Application
    Filed: April 25, 2011
    Publication date: October 25, 2012
    Applicant: NANYA TECHNOLOGY CORPORATION
    Inventors: Kuo-Hui Su, Yi-Nan Chen, Hsien-Wen Liu
  • Patent number: 8294240
    Abstract: A semiconductor die, having a substrate, includes a through silicon via. The through silicon via includes a decoupling capacitor having a first co-axial conductor, a second co-axial conductor, and a co-axial dielectric separating the first co-axial conductor from the second co-axial conductor. The decoupling capacitor is configured to provide local charge storage for components on the semiconductor die.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: October 23, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Matthew Michael Nowak, Shiqun Gu
  • Patent number: 8294241
    Abstract: A method of manufacturing a semiconductor device includes forming a wiring layer in a first insulating layer, forming a second insulating layer over the first insulating layer, forming a first conductive layer over the second insulating layer, forming a dielectric layer on the first conductive layer, forming a second conductive layer on the dielectric layer, selectively removing the second conductive layer to form an upper electrode on the dielectric layer, forming a first layer over the upper electrode and the dielectric layer, selectively removing the first layer, the dielectric layer, and the first conductive layer to form a lower electrode over which the dielectric layer and the first layer is entirely left, the upper electrode remaining partially over the lower electrode.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: October 23, 2012
    Assignee: Fujitsu Semiconductor Limited
    Inventors: Tatsuro Osada, Kaoru Saigoh
  • Patent number: 8288840
    Abstract: A semiconductor device includes a lower layer wiring layer, an MIM capacitors and an upper layer wiring layer. The lower layer wiring layer includes a plurality of lower layer wirings. The MIM capacitor is formed above the lower layer wiring layer. The MIM capacitor includes a lower electrode, a capacity dielectric film and an upper electrode which are layered from underneath in this order. A planar form of the upper electrode is smaller than that of the lower electrode. The upper layer wiring layer includes a plurality of upper layer wirings which are connected to the lower electrode and the upper electrode through via plugs. A plane of the upper electrode is made rectangular. The lower layer wirings are not arranged right below one or more than one edge of the plane of the upper electrode.
    Type: Grant
    Filed: April 21, 2010
    Date of Patent: October 16, 2012
    Assignee: Renesas Electronics Corporation
    Inventor: Takayuki Iwaki
  • Patent number: 8288240
    Abstract: A method of forming an MIM capacitor having interdigitated capacitor plates. Metal and dielectric layers are alternately deposited in an opening in a layer of insulator material. After each deposition of the metal layer, the metal layer is removed at an angle from the side to form the capacitor plate. The side from which the metal layer is removed is alternated with every metal layer that is deposited. When all the capacitor plates have been formed, the remaining opening in the layer of insulator material is filled with dielectric material then planarized, followed by the formation of contacts with the capacitor plates. There is also an MIM capacitor structure having interdigitated capacitor plates.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: October 16, 2012
    Assignee: International Business Machines Corporation
    Inventors: Roger Allen Booth, Jr., Kangguo Cheng
  • Publication number: 20120248571
    Abstract: A metal-insulation-metal (MIM) device including a first metal layer, a first insulation layer, a second metal layer, and a second insulation layer is provided. The first insulation layer is disposed on the first metal layer. The second metal layer is disposed on a part of the first insulation layer. The second insulation layer is disposed on a side wall of the second metal layer and on another part of the first insulation layer. A width of the first insulation layer under the second metal layer and the second insulation layer parallel to the first metal layer is greater than a with of the second metal layer parallel to the first metal layer. A manufacture method of an MIM device is also provided.
    Type: Application
    Filed: August 2, 2011
    Publication date: October 4, 2012
    Applicant: HIMAX TECHNOLOGIES LIMITED
    Inventors: Hung-Sui Lin, Mao-Hsiung Lin
  • Publication number: 20120241905
    Abstract: An integrated circuit includes a conductive substrate pick-up region in the substrate that forms a perimeter around a portion of the substrate. Conductive stripes traverse the portion of the substrate within the perimeter and are coupled to a low impedance node along with the substrate pick-up region. A capacitor has a bottom plate formed above the conductive stripes. The pick-up region and the conductive stripes absorb injected current caused by parasitic capacitance between the bottom plate of the capacitor and the substrate region thereby reducing cross-talk caused by the injected current.
    Type: Application
    Filed: March 25, 2011
    Publication date: September 27, 2012
    Inventors: William W.K. Tang, Shouli Yan, Zhiwei Dong
  • Publication number: 20120235279
    Abstract: A semiconductor device includes a substrate and a plurality of storage nodes on the substrate and extending in a vertical direction relative to the substrate. A lower support pattern is in contact with the storage nodes between a bottom and a top of the storage nodes, the lower support pattern spaced apart from the substrate in the vertical direction, and the lower support pattern having a first maximum thickness in the vertical direction. An upper support pattern is in contact with the storage nodes above the lower support pattern relative to the substrate, the upper support pattern spaced apart from the lower support pattern in the vertical direction, and the lower support pattern having a second maximum thickness in the vertical direction that is greater than the first maximum thickness of the lower support pattern.
    Type: Application
    Filed: March 8, 2012
    Publication date: September 20, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: JungWoo Seo
  • Publication number: 20120223414
    Abstract: In some aspects, a method of forming a reversible resistance-switching metal-insulator-metal (“MIM”) stack is provided, the method including: forming a first conducting layer comprising a titanium nitride material having between about 50% Ti and about 95% Ti, forming a carbon nano-tube (CNT) material above the first conducting layer, forming a second conducting layer above the CNT material, and etching the first conducting layer, CNT material and second conducting layer to form the MIM stack. Numerous other aspects are provided.
    Type: Application
    Filed: August 8, 2011
    Publication date: September 6, 2012
    Inventors: April D. Schricker, Er-Xuan Ping
  • Patent number: 8258037
    Abstract: Techniques for incorporating nanotechnology into decoupling capacitor designs are provided. In one aspect, a decoupling capacitor is provided. The decoupling capacitor comprises a first electrode; an intermediate layer adjacent to the first electrode having a plurality of nanochannels therein; a conformal dielectric layer formed over the intermediate layer and lining the nanochannels; and a second electrode at least a portion of which is formed from an array of nanopillars that fill the nanochannels in the intermediate layer. Methods for fabricating the decoupling capacitor are also provided, as are semiconductor devices incorporating the decoupling capacitor design.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: September 4, 2012
    Assignee: International Business Machines Corporation
    Inventors: Satya N. Chakravarti, Dechao Guo, Huiming Bu, Keith Kwong Hon Wong
  • Publication number: 20120211865
    Abstract: A high density deep trench MIM capacitor structure is provided wherein conductive-compressive-conformally applied layers of a semiconductor material, such as a Poly-SixGe1-x, are interleaved within MIM capacitor layers to counterbalance the tensile stresses created by such MIM capacitor layers. The interleaving of conductive-compressive-conformally applied material layers are adapted to counterbalance convex (upward) bowing of silicon wafers during the manufacturing process of high density deep trench MIM capacitor silicon devices to thereby help maximize production yields of such devices per wafer.
    Type: Application
    Filed: February 17, 2011
    Publication date: August 23, 2012
    Applicant: MAXIM INTEGRATED PRODUCTS, INC.
    Inventors: LEI TIAN, SCOTT WILSON BARRY, XUEJUN YING
  • Publication number: 20120211866
    Abstract: A metal-insulator-metal (MIM) capacitor and a method of fabricating the same. The MIM capacitor is in a memory area of a wafer and comprises a top electrode formed from the same metal layer as a point contact to a via in the logic area of the wafer. The method of fabricating the MIM capacitor in a memory area of a wafer comprises forming a point contact to a via in a logic area of the wafer from the same metal layer as a top electrode of the MIM capacitor.
    Type: Application
    Filed: February 17, 2011
    Publication date: August 23, 2012
    Inventor: Chung-Wen Chao
  • Publication number: 20120211868
    Abstract: A capacitor has first and second conducting plates and a dielectric region between the plates, wherein the dielectric region comprises two dielectric materials for each of which the variation of capacitance with voltage can be approximated by a polynomial having a linear coefficient and a quadratic coefficient, and wherein the quadratic coefficients of the two dielectric materials are of opposite sign. The capacitor comprises for example a first capacitor (42) and a second capacitor (44) that one connected in an anti-parallel manner.
    Type: Application
    Filed: September 23, 2009
    Publication date: August 23, 2012
    Applicant: X-FAB SEMICONDUCTOR FOUNDRIES AG
    Inventors: Paul Ronald Stribley, Soon Tat Kong, David John Verity
  • Patent number: 8237244
    Abstract: A method of manufacturing a semiconductor device includes forming a lower electrode on a semiconductor substrate, applying a photoresist on the lower electrode, forming an opening in the photoresist spaced from the periphery of the lower electrode, forming a high-dielectric constant film of a high-k material having a dielectric constant of 10 or more, performing liftoff so that the high-dielectric-constant film remains on the lower electrode, and forming an upper electrode on the high-dielectric-constant film remaining after the liftoff.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: August 7, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventor: Masahiro Totsuka
  • Patent number: 8237216
    Abstract: Lanthanum-metal oxide dielectrics and methods of fabricating such dielectrics provide an insulating layer in a variety of structures for use in a wide range of electronic devices and systems. In an embodiment, a lanthanum-metal oxide dielectric is formed using a trisethylcyclopentadionatolanthanum precursor and/or a trisdipyvaloylmethanatolanthanum precursor. Additional apparatus, systems, and methods are disclosed.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: August 7, 2012
    Assignee: Micron Technology, Inc.
    Inventors: Kie Y. Ahn, Leonard Forbes
  • Patent number: 8237282
    Abstract: A semiconductor device includes a semiconductor substrate including a main surface; a plurality of first interconnections formed in a capacitance forming region defined on the main surface and extending in a predetermined direction; a plurality of second interconnections each adjacent to the first interconnection located at an edge of the capacitance forming region, extending in the predetermined direction, and having a fixed potential; and an insulating layer formed on the main surface and filling in between each of the first interconnections and between the first interconnection and the second interconnection adjacent to each other. The first interconnections and the second interconnections are located at substantially equal intervals in a plane parallel to the main surface, and located to align in a direction substantially perpendicular to the predetermined direction.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: August 7, 2012
    Assignees: Renesas Electronics Corporation, Renesas Device Design Corp.
    Inventors: Takashi Okuda, Yasuo Morimoto, Yuko Maruyama, Toshio Kumamoto
  • Patent number: 8237208
    Abstract: Provided is a semiconductor device including a MIM capacitor, and having excellent waterproof property and antioxidant property even when being formed between wiring layers. The semiconductor device includes a semiconductor substrate, a first insulating film formed on the semiconductor substrate, a first wiring layer embedded in the first insulating film, a wiring cap film for covering the first wiring layer, the MIM capacitor formed on the wiring cap film, a hydrogen barrier film for covering the MIM capacitor, a second insulating film formed on the hydrogen barrier film, conductive plugs passing through the second insulating film and the hydrogen barrier film, one of which being connected to an upper electrode of the MIM capacitor and the other of which being connected to a lower electrode of the MIM capacitor, and a second wiring layer connected to the conductive plugs, and the upper and lower electrodes of the MIM capacitor.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: August 7, 2012
    Assignee: Renesas Electronics Corporation
    Inventor: Takayuki Iwaki
  • Patent number: 8237146
    Abstract: In a first aspect, a method of forming a memory cell is provided that includes (1) forming a metal-insulator-metal (MIM) stack, the MIM stack including (a) a first conductive carbon layer; (b) a low-hydrogen, silicon-containing carbon layer above the first conductive carbon layer; and (c) a second conductive carbon layer above the low-hydrogen, silicon-containing carbon layer; and (2) forming a steering element coupled to the MIM stack. Numerous other aspects are provided.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: August 7, 2012
    Assignee: SanDisk 3D LLC
    Inventors: Franz Kreupl, Jingyan Zhang, Huiwen Xu
  • Patent number: 8237242
    Abstract: A capacitor includes a first electrode, a dielectric layer, and a second electrode that are sequentially stacked. The dielectric layer has a stacked layer structure including a predetermined number of hafnium oxide sublayers and predetermined number of tantalum oxide sublayers. The number, materials, and thicknesses of the sublayers are determined so that the thickness ratio has a range in which, in voltage-leakage current characteristics showing the relationship between the voltage between the first and second electrodes and the leakage current, a start voltage at which the slope of an increase in the current starts to discontinuously increase satisfies an electric field strength of 3 [MV/cm] or more when the ratio of the total thickness of the predetermined number of tantalum oxide sublayers to the total thickness of the dielectric layer is varied, and the thickness ratio is within the range such that the start voltage is within the range.
    Type: Grant
    Filed: July 23, 2007
    Date of Patent: August 7, 2012
    Assignee: Sony Corporation
    Inventors: Kiwamu Adachi, Satoshi Horiuchi
  • Publication number: 20120193757
    Abstract: A DRAM capacitor structure is disposed on the interior surface of a vertical hollow cylinder of a support structure overlying a semiconductor substrate. The support structure further includes a horizontal supporting layer that is integrally connected with the vertical hollow cylinder. A fabrication method for forming the DRAM capacitor structure is also provided.
    Type: Application
    Filed: April 13, 2011
    Publication date: August 2, 2012
    Inventors: Tah-Te Shih, Tsung-Cheng Yang
  • Patent number: 8232587
    Abstract: A method of forming a metal-insulator-metal capacitor has the following steps. A stack dielectric structure is formed by alternately depositing a plurality of second dielectric layers and a plurality of third dielectric layers. A wet etch selectivity of the second dielectric layer relative to said third dielectric layer is of at least 5:1. An opening is formed in the stack dielectric structure, and then a wet etch process is employed to remove relatively-large portions of the second dielectric layers and relatively-small portions of the third dielectric layers to form a plurality of lateral recesses in the second dielectric layers along sidewalls of the opening. A bottom electrode layer is formed to extend along the serrate sidewalls, a capacitor dielectric layer is formed on the bottom electrode layer, and a top electrode layer is formed on the capacitor dielectric layer.
    Type: Grant
    Filed: January 6, 2010
    Date of Patent: July 31, 2012
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventor: Kuo-Chi Tu
  • Publication number: 20120187536
    Abstract: A high density capacitor and low density capacitor simultaneously formed on a single wafer and a method of manufacture is provided. The method includes depositing a bottom plate on a dielectric material; depositing a low-k dielectric on the bottom plate; depositing a high-k dielectric on the low-k dielectric and the bottom plate; depositing a top plate on the high-k dielectric; and etching a portion of the bottom plate and the high-k dielectric to form a first metal-insulator-metal (MIM) capacitor having a dielectric stack with a first thickness and a second MIM capacitor having a dielectric stack with a second thickness different than the first thickness.
    Type: Application
    Filed: March 22, 2012
    Publication date: July 26, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: James S. DUNN, Zhong - Xiang HE, Anthony K. STAMPER
  • Patent number: 8227846
    Abstract: 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: Grant
    Filed: February 12, 2010
    Date of Patent: July 24, 2012
    Assignee: Advanced Micro Devices, Inc.
    Inventor: Andrew E. Carlson
  • Patent number: 8227849
    Abstract: The invention is directed to an improved capacitor that reduces edge defects and prevents yield failures. A first embodiment of the invention comprises a protective layer adjacent an interface of a conductive layer with the insulator, while the second embodiment of the invention comprises a protective layer on an insulator which is on a conductive layer.
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: July 24, 2012
    Assignee: International Business Machines Corporation
    Inventors: Ebenezer E Eshun, Ronald J Bolam, Douglas D Coolbaugh, Keith E Downes, Natalie B Feilchenfeld, Zhong-Xiang He
  • Patent number: 8227894
    Abstract: A stepwise capacitor structure includes at least one stepwise conductive layer. The stepwise capacitor represents a feature of multiple capacitors. When currents flow through the stepwise capacitor, different current paths are presented in between an upper conductor and a bottom conductor of the stepwise capacitor in response to different current frequency; different inductor is induced in each path and decoupled by a stepwise capacitor structure as disclosed herein.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: July 24, 2012
    Assignee: Industrial Technology Research Institute
    Inventors: Min-Lin Lee, Shih-Hsien Wu, Shinn-Juh Lai, Shur-Fen Liu
  • Publication number: 20120181657
    Abstract: A plurality of metal layers includes a top metal layer. An Ultra-Thick Metal (UTM) layer is disposed over the top metal layer, wherein no additional metal layer is located between the UTM layer and the top metal layer. A Metal-Insulator-Metal (MIM) capacitor is disposed under the UTM layer and over the top metal layer.
    Type: Application
    Filed: January 17, 2011
    Publication date: July 19, 2012
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Kun-Mao Wu, Chih-Hsun Lin, Yu-Lung Yeh, Kuan-Chi Tsai
  • Publication number: 20120181662
    Abstract: Methods and devices for a dielectric are provided. One method embodiment includes forming a passivation layer on a substrate, wherein the passivation layer contains a composition of silicon, oxygen, and nitrogen. The method also includes forming a lanthanide dielectric film on the passivation layer, and forming an encapsulation layer on the lanthanide dielectric film.
    Type: Application
    Filed: March 26, 2012
    Publication date: July 19, 2012
    Applicant: MICRON TECHNOLOGY, INC.
    Inventor: Arup Bhattacharyya
  • Publication number: 20120181659
    Abstract: A ferroelectric capacitor formed above a semiconductor substrate includes a lower electrode, a dielectric film (ferroelectric film) having ferroelectric characteristics, and an upper electrode. The upper electrode includes a conductive oxide film made of a ferroelectric material to which conductivity is provided by adding a conductive material such as Ir, and the conductive oxide film is in contact with the dielectric film.
    Type: Application
    Filed: November 21, 2011
    Publication date: July 19, 2012
    Applicant: FUJITSU SEMICONDUCTOR LIMITED
    Inventor: Wensheng WANG
  • Publication number: 20120175736
    Abstract: A substrate is provided with a first wiring layer 111, an interlayer insulating film 132 on the first wiring layer 111, a hole 112A formed in the interlayer insulating film, a first metal layer 112 covering the hole 112A, a second metal layer 113 formed in the hole 112A, a dielectric insulating film 135 on the first metal layer 112, and second wiring layers 114-116 on the dielectric insulating film 135, wherein the first metal layer 112 constitutes at least part of the lower electrode, an area, facing the lower electrode, of the second wiring layers 114-116 constitutes the upper electrode, and a capacitor 160 is constructed of the lower electrode, the dielectric insulating film 135 and the upper electrode P1.
    Type: Application
    Filed: March 21, 2012
    Publication date: July 12, 2012
    Applicant: FUJITSU SEMICONDUCTOR LIMITED
    Inventor: Kenichi Watanabe
  • Publication number: 20120168902
    Abstract: A method for fabricating a capacitor includes providing a substrate having a first surface and a second surface, and forming a plurality of openings in the substrate, the openings are separated from each other by a shape of the substrate, each opening having sidewalls and a bottom. The method further includes submitting the substrate including the openings to an oxidation process to form an oxide layer covering the sidewalls and the bottom of the openings, and a portion of a surface of the substrate, wherein a shape of the substrate disposed between a pair of two adjacent openings is completely oxidized to form an insulation layer between the pair of two adjacent openings; and depositing a conductive material layer over the oxide layer in the openings such that the conductive material layer is electrically continuous and such that the pair of adjacent openings form a capacitor.
    Type: Application
    Filed: September 16, 2011
    Publication date: July 5, 2012
    Applicant: Semiconductor Manufacturing International (Shanghai) Corporation
    Inventors: Yefang Zhu, Liangliang Guo, Herb Huang
  • Patent number: 8212333
    Abstract: A method of manufacturing a MIM capacitor of a semiconductor device and a MIM capacitor. A MIM structure and a metal layer may be formed using a single process. A method of manufacturing a MIM capacitor may include forming a hole on and/or over a lower metal wire region. A method of manufacturing a MIM capacitor may include forming a lower metal layer, an inter-metal dielectric and/or an upper metal layer on and/or over a hole to form a MIM structure. Patterns to form a MIM structure and a metal layer may be formed at substantially the same time. If etching is performed with a photoresist pattern as a mask, a MIM structure and a metal layer structure may be formed at substantially the same time using a single mask.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: July 3, 2012
    Assignee: Dongbu HiTek Co., Ltd.
    Inventor: Jong-Yong Yun
  • Publication number: 20120161280
    Abstract: A capacitor includes a trench disposed in a first dielectric layer disposed above a substrate. A first metal plate is disposed along the bottom and sidewalls of the trench. A second dielectric layer is disposed on and conformal with the first metal plate. A portion of the first metal plate directly adjacent to the second dielectric layer is recessed relative to the sidewalls of the second dielectric layer. A second metal plate is disposed on and conformal with the second dielectric layer. A portion of the second metal plate directly adjacent to the second dielectric layer is recessed relative to the sidewalls of the second dielectric layer. A third dielectric layer is disposed above the first metal plate, the second dielectric layer, and the second metal plate, and disposed between the first metal plate and the second dielectric layer and between the second metal plate and the second dielectric layer.
    Type: Application
    Filed: December 22, 2010
    Publication date: June 28, 2012
    Inventor: Nick Lindert
  • Publication number: 20120153434
    Abstract: Metal-insulator-metal (MIM) capacitors and methods for fabricating MIM capacitors. The MIM capacitor includes an interlayer dielectric (ILD) layer with apertures each bounded by a plurality of sidewalls and each extending from the top surface of the ILD layer into the first interlayer dielectric layer. A layer stack, which is disposed on the sidewalls of the apertures and the top surface of the ILD layer, includes a bottom conductive electrode, a top conductive electrode, and a capacitor dielectric between the bottom and top conductive electrodes.
    Type: Application
    Filed: December 15, 2010
    Publication date: June 21, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Michel J. Abou-Khalil, Robert J. Gauthier, JR., Tom C. Lee, Junjun Li, Souvick Mitra, Christopher S. Putnam, Anthony K. Stamper