Of Capacitor (epo) Patents (Class 257/E21.008)
  • Patent number: 8921198
    Abstract: A method of forming a deep trench capacitor includes providing a wafer. Devices are formed on a front side of the wafer. A through-silicon-via is formed on a substrate of the wafer. Deep trenches are formed on a back side of the wafer. A deep trench capacitor is formed in the deep trench. The through-silicon-via connects the deep trench capacitor to the devices.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: December 30, 2014
    Assignee: International Business Machines Corporation
    Inventors: Roger A. Booth, Jr., Kangguo Cheng, Robert Hannon, Ravi M. Todi, Geng Wang
  • Patent number: 8921973
    Abstract: According to one embodiment, the semiconductor device with element isolation by DTI has a layer of the first electroconductive type formed on a substrate. The semiconductor layer of the second electroconductive type is formed on the embedding layer. The first DTI has the following structure: a trench is formed from the surface of the semiconductor layer through the first layer into the substrate and surrounds the semiconductor layer, and an insulator is formed in the trench. The second DTI is formed around the periphery of the semiconductor layer. The first electrode is connected to the first region of the semiconductor layer divided by the first DTI. The second electrode is connected to the second region of the semiconductor layer divided as mentioned previously. The first region and the second region form electrode plates and the first DTI forms the dielectric, to thereby form a capacitor.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: December 30, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Tsuyoshi Hirayu
  • Patent number: 8921977
    Abstract: A capacitor array includes a plurality of capacitors and a support frame. Each capacitor includes an electrode. The support frame supports the plurality of electrodes and includes a plurality of support structures corresponding to the plurality of electrodes. Each support structure may surround the respective electrode. The support frame may include oxide of a doped oxidizable material.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: December 30, 2014
    Assignee: Nan Ya Technology Corporation
    Inventors: Jen Jui Huang, Che Chi Lee, Shih Shu Tsai, Cheng Shun Chen, Shao Ta Hsu, Chao Wen Lay, Chun I Hsieh, Ching Kai Lin
  • Patent number: 8901629
    Abstract: A semiconductor device includes a semiconductor substrate divided into a cell region and a peripheral circuit region defined in a first direction, wherein the peripheral circuit region is divided into a first region and a second region defined in a second direction substantially orthogonal to the first direction; gate lines formed over the semiconductor substrate in the cell region and arranged in the second direction; and a capacitor including lower electrodes over the semiconductor substrate, a dielectric layer and an upper electrode, wherein the lower electrodes in the first and second regions, separated from each other in the first direction and coupled to each other in the first region, the dielectric layer is formed along surfaces of the lower electrodes in the second region, and the upper electrode is formed over the dielectric layer.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: December 2, 2014
    Assignee: SK Hynix Inc.
    Inventors: Jung Ryul Ahn, Yun Kyoung Lee
  • Patent number: 8901706
    Abstract: A trench structure that in one embodiment includes a trench present in a substrate, and a dielectric layer that is continuously present on the sidewalls and base of the trench. The dielectric layer has a dielectric constant that is greater than 30. The dielectric layer is composed of tetragonal phase hafnium oxide with silicon present in the grain boundaries of the tetragonal phase hafnium oxide in an amount ranging from 3 wt. % to 20 wt. %.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: December 2, 2014
    Assignee: International Business Machines Corporation
    Inventors: Michael P. Chudzik, Bachir Dirahoui, Rishikesh Krishnan, Siddarth A. Krishnan, Oh-jung Kwon, Paul C. Parries, Hongwen Yan
  • Patent number: 8901705
    Abstract: The present invention relates to an electronic component, that comprises, on a substrate, at least one integrated MIM capacitor, (114) an electrically insulating first cover layer (120) which partly or fully covers the top capacitor electrode (118) and is made of a lead-containing dielectric material, and a top barrier layer (122) on the first cover layer. The top barrier layer serves for avoiding a reduction of lead atoms comprised by the first cover layer under exposure of the first cover layer to a reducing substance. An electrically insulating second cover layer (124) on the top barrier layer has a dielectric permittivity smaller than that of the first cover layer establishes a low parasitic capacitance of the cover-layer structure. The described cover-layer structure with the intermediate top barrier layer allows to fabricate a high-accuracy resistor layer (126.1) on top.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: December 2, 2014
    Assignee: NXP, B.V.
    Inventors: Aarnoud Laurens Roest, Mareike Klee, Rudiger Gunter Mauczok, Linda Van Leuken-Peters, Robertus Adrianus Maria Wolters
  • Patent number: 8901710
    Abstract: Disclosed are an interdigitated capacitor and an interdigitated vertical native capacitor, each having a relatively low (e.g., zero) net coefficient of capacitance with respect to a specific parameter. For example, the capacitors can have a zero net linear temperature coefficient of capacitance (Tcc) to limit capacitance variation as a function of temperature or a zero net quadratic voltage coefficient of capacitance (Vcc2) to limit capacitance variation as a function of voltage. In any case, each capacitor can incorporate at least two different plate dielectrics having opposite polarity coefficients of capacitance with respect to the specific parameter due to the types of dielectric materials used and their respective thicknesses. As a result, the different dielectric plates will have opposite effects on the capacitance of the capacitor that cancel each other out such that the capacitor has a zero net coefficient of capacitance with respect to specific parameter.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: December 2, 2014
    Assignee: International Business Machines Corporation
    Inventors: Frederick G. Anderson, Natalie B Feilchenfeld, Zhong-Xiang He, Theodore J. Letavic, Yves T. Ngu
  • Patent number: 8896097
    Abstract: Provided are a method of manufacturing a capacitor capable of achieving a high dielectric constant property and a low leakage current, a capacitor, and a method of forming a dielectric film used in the capacitor. The capacitor is fabricated by forming a lower electrode layer on a substrate; forming a first TiO2 film having an interface control function on the lower electrode layer; forming a ZrO2-based film on the first TiO2 film; performing an annealing process for crystallizing ZrO2 in the ZrO2-based film, after forming the ZrO2-based film; forming a second TiO2 film which serves as a capacity film on the ZrO2-based film; and forming an upper electrode layer on the second TiO2 film.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: November 25, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Yu Wamura, Koji Akiyama, Shingo Hishiya, Katsushige Harada
  • Patent number: 8896098
    Abstract: To provide a power storage device with improved cycle characteristics and a method for manufacturing the power storage device, a power storage device is provided with a conductive layer in contact with a surface of an active material layer including a silicon layer after an oxide film, such as a natural oxide film, which is formed on the surface of the active material layer is removed. The conductive layer is thus provided in contact with the surface of the active material layer including a silicon layer, whereby the conductivity of the electrode surface of the power storage device is improved; therefore, cycle characteristics of the power storage device can be improved.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: November 25, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Shunpei Yamazaki
  • Patent number: 8890289
    Abstract: A semiconductor device includes: a multilayer wiring layer located over a substrate and in which multiple wiring layers configured by a wiring and an insulating layer are stacked; a memory circuit which is formed in a memory circuit region in the substrate and has a capacitance element embedded in a concave part located in the multilayer wiring layer; a logic circuit which is formed in a logic circuit region in the substrate; an upper part coupling wiring which is stacked over the capacitance element configured by a lower part electrode, a capacitor insulating film and an upper part electrode; and a cap layer which is formed on the upper surface of the wiring configuring the logic circuit. The upper surface of the upper part coupling wiring and the upper surface of the cap film are provided on the same plane.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: November 18, 2014
    Assignee: Renesas Electronics Corporation
    Inventors: Kenzo Manabe, Naoya Inoue, Kenichiro Hijioka, Yoshihiro Hayashi
  • Patent number: 8884288
    Abstract: The present invention provides a semiconductor structure for testing MIM capacitors. The semiconductor structure comprises: a first metal layer comprising at least a first circuit area and a second circuit area; a second metal layer located below the first metal layer with a first dielectric layer lying therebetween and connected with the second circuit area; a top plate located within the first dielectric layer closer to the first metal layer and connected with the first circuit area; a bottom plate located within the first dielectric layer closer to the second metal layer and separated from the top plate with an insulation layer therebetween and connected with the second circuit area. The second metal layer is connected with the substrate through a first electric pathway so as to form a second electric pathway from the top plate to the substrate when an electric leakage region exists in the insulation layer.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: November 11, 2014
    Assignee: Shanghai Huali Microelectronics Corporation
    Inventors: Qiang Li, Zhuanlan Sun, Changhui Yang
  • Patent number: 8883601
    Abstract: A semiconductor device has memory cell portions and compensation capacitance portions on a single substrate. The memory cell portion and the compensation capacitance portion have mutually different planar surface areas. The memory cell portion and the compensation capacitance portion include capacitance plate electrodes of the same structure. The capacitance plate electrode has a laminated structure including a boron-doped silicon germanium film and a metal film.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: November 11, 2014
    Assignee: PS4 Luxco S.A.R.L.
    Inventor: Nobuyuki Sako
  • Patent number: 8884350
    Abstract: This semiconductor device according to the present invention includes a plurality of cylindrical lower electrodes aligned densely in a memory array region; a plate-like support which is contacted on the side surface of the cylindrical lower electrodes, and links to support the plurality of the cylindrical lower electrodes; a pore portion provided in the plate-like support; a dielectric film covering the entire surface of the cylindrical lower electrodes and the plate-like support in which the pore portion is formed; and an upper electrode formed on the surface of the dielectric film, wherein the boundary length of the part on the side surface of the cylindrical lower electrode which is exposed on the pore portion is shorter than the boundary length of the part on the side surface of the cylindrical lower electrode which is not exposed on the pore portion.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: November 11, 2014
    Assignee: PS4 Luxco S.A.R.L.
    Inventor: Toshiyuki Hirota
  • Patent number: 8860107
    Abstract: At least one semiconductor fin for a capacitor is formed concurrently with other semiconductor fins for field effect transistors. A lower conductive layer is deposited and lithographically patterned to form a lower conductive plate located on the at least one semiconductor fin. A dielectric layer and at least one upper conductive layer are formed and lithographically patterned to form a node dielectric and an upper conductive plate over the lower conductive plate as well as a gate dielectric and a gate conductor over the other semiconductor fins. The lower conductive plate, the node dielectric, and the upper conductive plate collectively form a capacitor. The finFETs may be dual gate finFETs or trigate finFETs. A buried insulator layer may be optionally recessed to increase the capacitance. Alternately, the lower conductive plate may be formed on a planar surface of the buried insulator layer.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: October 14, 2014
    Assignee: International Business Machines Corporation
    Inventors: Wilfried E. Haensch, Pranita Kulkarni, Tenko Yamashita
  • Patent number: 8853760
    Abstract: An integrated circuit may include an element placed in an insulating region adjacent to a copper metallization level and including a barrier layer in contact with a metallization level. The element may be electrically connected to and spaced away from a copper line of the metallization level by way of an electrical link passing through the barrier layer and including an electrically conductive material different from copper in direct contact with the copper line.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: October 7, 2014
    Assignee: STMicroelectronics (Crolles 2) SAS
    Inventors: Sébastien Cremer, Sébastien Gaillard
  • Patent number: 8853821
    Abstract: Provided are vertical capacitors and methods of forming the same. The formation of the vertical capacitor may include forming input and output electrodes on a top surface of a substrate, etching a bottom surface of the substrate to form via electrodes, and then, forming a dielectric layer between the via electrodes. As a result, a vertical capacitor with high capacitance can be provided in a small region of the substrate.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: October 7, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seong-il Kim, Sang-Heung Lee, Jong-Won Lim, Hyung Sup Yoon, Jongmin Lee, Byoung-Gue Min, Jae Kyoung Mun, Eun Soo Nam
  • Patent number: 8846468
    Abstract: A method for reducing the leakage current in DRAM Metal-Insulator-Metal capacitors includes forming a capacitor stack including an oxygen donor dopant incorporated within the dielectric layer. The oxygen donor dopants may be incorporated within the dielectric layer during the formation of the dielectric layer. The oxygen donor materials provide oxygen to the dielectric layer and reduce the concentration of oxygen vacancies, thus reducing the leakage current.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: September 30, 2014
    Assignees: Intermolecular, Inc., Elpida Memory, Inc.
    Inventors: Xiangxin Rui, Sergey Barabash
  • Patent number: 8841195
    Abstract: A method for fabricating a semiconductor device includes forming a first dielectric structure over a second region of a substrate to expose a first region of the substrate, forming a barrier layer over an entire surface including the first dielectric structure, forming a second dielectric structure over the barrier layer in the first region, forming first open parts and second open parts in the first region and the second region, respectively, by etching the second dielectric structure, the barrier layer and the first dielectric structure, forming first conductive patterns filled in the first open parts and second conductive patterns filled in the second open parts, forming a protective layer to cover the second region, and removing the second dielectric structure.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: September 23, 2014
    Assignee: SK Hynix Inc.
    Inventors: Jun-Hyeub Sun, Sang-Oh Lee, Su-Young Kim
  • Patent number: 8841747
    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: Grant
    Filed: April 20, 2011
    Date of Patent: September 23, 2014
    Assignee: Nanya Technology Corp.
    Inventors: Vassil Antonov, Vishwanath Bhat, Chris Carlson
  • Patent number: 8835274
    Abstract: Metal-insulator-metal capacitors with a bottom electrode including at least two portions of a metal nitride material. At least one of the portions of the metal nitride material includes a different material than another portion. Interconnects including at least two portions of a metal nitride material are also disclosed, at least one of the portions of the metal nitride material are formed from a different material than another portion of the metal nitride material. Methods for fabricating such MIM capacitors and interconnects are also disclosed, as are semiconductor devices including such MIM capacitors and interconnects.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: September 16, 2014
    Assignee: Micron Technology, Inc.
    Inventor: Yongjun Jeff Hu
  • Patent number: 8835273
    Abstract: A first electrode layer for a Metal-Insulator-Metal (MIM) DRAM capacitor is formed wherein the first electrode layer contains a conductive metal oxide formed using a high temperature, low pressure ALD process. The high temperature ALD process results in a layer with enhanced crystallinity, higher density, reduced shrinkage, and lower carbon contamination. The high temperature ALD process can be used for either or both the bottom electrode and the top electrode layers.
    Type: Grant
    Filed: September 19, 2012
    Date of Patent: September 16, 2014
    Assignees: Intermolecular, Inc., Elpida Memory, Inc.
    Inventors: Hanhong Chen, Edward L Haywood, Sandra G Malhotra, Hiroyuki Ode
  • Patent number: 8828836
    Abstract: A method for fabricating a dynamic random access memory (DRAM) capacitor stack is disclosed wherein the stack includes a first electrode, a dielectric layer, and a second electrode. The first electrode is formed from a conductive binary metal. A dielectric layer is formed over the first electrode. The dielectric layer is subjected to a milliseconds anneal process that serves to crystallize the dielectric material and decrease the concentration of oxygen vacancies.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: September 9, 2014
    Assignees: Intermolecular, Inc., Elpida Memory, Inc.
    Inventors: Karthik Ramani, Hiroyuki Ode, Sandra Malhotra
  • Patent number: 8823008
    Abstract: In an organic light emitting diode (OLED) display and a manufacturing method, an organic light emitting diode (OLED) display includes: a substrate; a semiconductor layer pattern formed on the substrate and including a first capacitor electrode; a gate insulating layer covering the semiconductor layer pattern; a first conductive layer pattern formed on the gate insulating layer and including a second capacitor electrode having at least a portion overlapping the first capacitor electrode; an interlayer insulating layer having a capacitor opening exposing a portion of the second capacitor electrode and covering the second capacitor electrode; and a second conductive layer pattern formed on the interlayer insulating layer, wherein the capacitor opening includes a first transverse side wall parallel to and overlapping the second capacitor electrode, a second transverse side wall parallel to and not overlapping the second capacitor electrode, and a longitudinal side wall connecting the first transverse side wall an
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: September 2, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sun Park, Jong-Hyun Park, Yul-Kyu Lee, Dae-Woo Kim
  • Patent number: 8815678
    Abstract: In a thin film transistor, each of an upper electrode and a lower electrode is formed of at least one material selected from the group consisting of a metal and a metal nitride, represented by TiN, Ti, W, WN, Pt, Ir, Ru. A capacitor dielectric film is formed of at least one material selected from the group consisting of ZrO2, HfO2, (Zrx, Hf1-x)O2 (0<x<1), (Zry, Ti1-y)O2 (0<y<1), (Hfz, Ti1-z)O2 (0<z<1), (Zrk, Til, Hfm)O2 (0<k, l, m<1, k+l+m=1), by an atomic layer deposition process. The thin film transistor thus formed has a minimized leakage current and an increased capacitance.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: August 26, 2014
    Assignee: Renesas Electronics Corporation
    Inventors: Toshihiro Iizuka, Tomoe Yamamoto, Mami Toda, Shintaro Yamamichi
  • Patent number: 8815677
    Abstract: A method for processing dielectric materials and electrodes to decrease leakage current is disclosed. The method includes a post dielectric anneal treatment in an oxidizing atmosphere to reduce the concentration of oxygen vacancies in the dielectric material. The method further includes a post metallization anneal treatment in an oxidizing atmosphere to reduce the concentration of interface states at the electrode/dielectric interface and to further reduce the concentration of oxygen vacancies in the dielectric material.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: August 26, 2014
    Assignees: Intermolecular, Inc., Elpida Memory, Inc.
    Inventors: Hanhong Chen, Wim Deweerd, Xiangxin Rui, Sandra Malhotra, Hiroyuki Ode
  • Patent number: 8810007
    Abstract: A wiring board provided with a silicon substrate including a through hole that communicates a first surface and a second surface of the silicon substrate. A capacitor is formed on an insulating film, which is applied to the silicon substrate, on the first surface and a wall surface defining the through hole. A capacitor part of the capacitor includes a first electrode, a dielectric layer, and a second electrode that are sequentially deposited on the insulating film on the first surface and the wall surface of the through hole. A penetration electrode is formed in the through hole covered by the first electrode, the dielectric layer, and the second electrode of the capacitor part.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: August 19, 2014
    Assignees: Shinko Electric Industries Co., Ltd., Taiyo Yuden Co., Ltd.
    Inventors: Akihito Takano, Masahiro Sunohara, Hideaki Sakaguchi, Mitsutoshi Higashi, Kenichi Ota, Yuichi Sasajima
  • Patent number: 8796817
    Abstract: A semiconductor device includes a multilayer substrate, a semiconductor element secured to an upper surface of the multilayer substrate, a first metal pattern located on a portion of a lower surface of the multilayer substrate, a dielectric having a higher permittivity than the multilayer substrate and located on the lower surface of the multilayer substrate, and a bottom surface electrode located on a bottom surface of the semiconductor device. The bottom surface electrode, the dielectric, and the first metal pattern together form a bypass capacitor.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: August 5, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventor: Toshio Okuda
  • Patent number: 8796852
    Abstract: A 3D integrated circuit structure comprises a first chip, wherein the first chip comprises: a substrate; a semiconductor device formed on the substrate and a dielectric layer formed on both the substrate and the semiconductor device; a conductive material layer formed within a through hole penetrating through both the substrate and the dielectric layer; a stress releasing layer surrounding the through hole; and a first interconnecting structure connecting the conductive material layer with the semiconductor device. By forming a stress releasing layer to partially release the stress caused by the conductive material in the via, the stress caused by mismatch of CTE between the conductive material and the semiconductor (for example, silicon) surrounding it can be reduced, thereby enhancing the performance of the semiconductor device and the corresponding 3D integrated circuit consisting of the semiconductor devices.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: August 5, 2014
    Assignee: Institute of Microelectronics, Chinese Academy of Sciences
    Inventor: Huilong Zhu
  • Patent number: 8779549
    Abstract: An example embodiment relates to a semiconductor memory device including a plurality of cylindrical bottom electrodes arranged in a first direction and in a second direction. The device includes a supporting base configured to support the plurality of cylindrical bottom electrodes by contacting side surfaces of the plurality of cylindrical bottom electrodes. The supporting base includes first patterns in which first open areas are formed, and second patterns in which second open areas are formed. The first patterns and the second patterns have different oriented shapes.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: July 15, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung-mo Kim, Ji-woong Sue, Jin-kyu Park, Young-kwan Park
  • Patent number: 8766400
    Abstract: An electronic device and fabrication method thereof are provided. The electronic device contains a glass substrate, a patterned semiconductor substrate, having at least one opening, disposed on the glass substrate and at least one passive component having a first conductive layer and a second conductive layer, wherein the first conductive layer is disposed between the patterned semiconductor substrate and the glass substrate.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: July 1, 2014
    Inventor: Ching-Yu Ni
  • Patent number: 8763235
    Abstract: A method for bonding a first substrate to a second substrate is described. The first substrate includes a first plurality of solder pads, a first alignment mark set, and a first plurality of dots. The second substrate includes a second plurality of solder pads, a second alignment mark set, and a second plurality of dots configured to interlock with the first plurality of dots. The method includes aligning the first alignment mark set with the second alignment mark set. The first alignment mark sets being aligned corresponds to the dots and the solder pads being aligned. The method also includes locking the first plurality of dots with the second plurality of dots to form an interlocking key. The method also includes reflowing at least one of the first and second pluralities of solder pads. The dots remain substantially solid during the reflow.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: July 1, 2014
    Assignee: Western Digital (Fremont), LLC
    Inventors: Lei Wang, Luc Ving Chung
  • Patent number: 8766403
    Abstract: Semiconductor devices having capacitor arrays and methods of forming the same. A semiconductor device is formed including a capacitor array. The capacitor array includes a plurality of operational capacitors formed along a diagonal of the capacitor array. The capacitor array also includes a plurality of dummy capacitors formed substantially symmetrically about the plurality of operational capacitors in the capacitor array. A first operational capacitor is formed at a first edge of the capacitor array. Each one of the plurality of operational capacitors is electrically coupled to a non-adjacent other one of the plurality of operational capacitors.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: July 1, 2014
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chi-Feng Huang, Chia-Chung Chen
  • Patent number: 8765569
    Abstract: A metal oxide bilayer second electrode for a MIM DRAM capacitor is formed wherein the layer of the electrode that is in contact with the dielectric layer (i.e. bottom layer) has a desired composition and crystal structure. An example is crystalline MoO2 if the dielectric layer is TiO2 in the rutile phase. The other component of the bilayer (i.e. top layer) is a sub-oxide of the same material as the bottom layer. The top layer serves to protect the bottom layer from oxidation during subsequent PMA or other DRAM fabrication steps by reacting with any oxygen species before they can reach the bottom layer of the bilayer second electrode.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: July 1, 2014
    Assignees: Intermolecular, Inc., Elpida Memory, Inc.
    Inventors: Hanhong Chen, Wim Deweerd, Hiroyuki Ode
  • Patent number: 8759234
    Abstract: A system and method for manufacturing a semiconductor device is provided. An embodiment comprises forming a deposited layer using an atomic layer deposition (ALD) process. The ALD process may utilize a first precursor for a first time period, a first purge for a second time period longer than the first time period, a second precursor for a third time period longer than the first time period, and a second purge for a fourth time period longer than the third time period.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: June 24, 2014
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Yao-Wen Chang, Cheng-Yuan Tsai, Hsing-Lien Lin
  • Patent number: 8753952
    Abstract: Ferroelectric capacitor structures for integrated decoupling capacitors and the like. The ferroelectric capacitor structure includes two or more ferroelectric capacitors connected in series with one another between voltage nodes. The series connection of the ferroelectric capacitors reduces the applied voltage across each, enabling the use of rough ferroelectric dielectric material, such as PZT deposited by MOCVD. Matched construction of the series-connected capacitors, as well as uniform polarity of the applied voltage across each, is beneficial in reducing the maximum voltage across any one of the capacitors, reducing the vulnerability to dielectric breakdown.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: June 17, 2014
    Assignee: Texas Instruments Incorporated
    Inventors: Scott Robert Summerfelt, John A. Rodriguez, Huang-Chun Wen, Steven Craig Bartling
  • Patent number: 8748258
    Abstract: An ETSOI transistor and a capacitor are formed respectively in a transistor and capacitor region thereof by etching through an ETSOI and thin BOX layers in a replacement gate HK/MG flow. The capacitor formation is compatible with an ETSOI replacement gate CMOS flow. A low resistance capacitor electrode makes it possible to obtain a high quality capacitor or varactor. The lack of topography during dummy gate patterning are achieved by lithography in combination accompanied with appropriate etch.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: June 10, 2014
    Assignee: International Business Machines Corporation
    Inventors: Kangguo Cheng, Bruce B. Doris, Ali Khakifirooz, Ghavam Shahidi
  • Patent number: 8742542
    Abstract: A method of manufacturing a semiconductor integrated circuit device having low depletion ratio capacitor comprising: forming hemispherical grains (HSG) on a poly-silicon; doping the hemispherical grained polysilicon in a phosphine gas; and rapid thermal oxidizing the doped hemispherical grained polysilicon at 850° C. for 10 seconds. The method further comprises nitridizing the rapid thermal oxidized hemispherical-grained polysilicon and depositing a alumina film on the silicon nitride layer. A semiconductor integrated circuit device having a low depletion ratio capacitor according to the disclosed manufacturing method is provided.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: June 3, 2014
    Assignee: Semiconductor Manufacturing International (Shanghai) Corporation
    Inventors: Cheng Yang, Bo Tao, Jason Luo, Jinganag Wu
  • Patent number: 8742544
    Abstract: A semiconductor device includes an oxide semiconductor layer, a source electrode and a drain electrode electrically connected to the oxide semiconductor layer, a gate insulating layer covering the oxide semiconductor layer, the source electrode, and the drain electrode, and a gate electrode over the gate insulating layer. The source electrode and the drain electrode include an oxide region formed by oxidizing a side surface thereof. Note that the oxide region of the source electrode and the drain electrode is preferably formed by plasma treatment with a high frequency power of 300 MHz to 300 GHz and a mixed gas of oxygen and argon.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: June 3, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Jun Koyama
  • Patent number: 8741727
    Abstract: A method of manufacturing a semiconductor device includes forming a flash memory cell in a first region, forming a first electrode of a capacitor in a second region, forming a first silicon oxide film, a silicon nitride film, and a second silicon oxide film in this order as a second insulating film, removing the silicon nitride film and the second silicon oxide film in a partial region of the first electrode, wet-etching a first insulating film and the second insulating film in the third region, forming a second electrode of the capacitor, and etching and removing the first silicon oxide film in the partial region.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: June 3, 2014
    Assignee: Fujitsu Semiconductor Limited
    Inventors: Junichi Ariyoshi, Taiji Ema, Toru Anezaki
  • Patent number: 8729707
    Abstract: A method of manufacturing a semiconductor device includes forming an insulating film over a semiconductor substrate, forming a capacitor including a lower electrode, a capacitor dielectric film including a ferroelectric material, and an upper electrode over the insulating film, forming a first protective insulating film over a side surface and upper surface of the capacitor by a sputtering method, and forming a second protective insulating film over the first protective insulating film by an atomic layer deposition method.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: May 20, 2014
    Assignee: Fujitsu Semiconductor Limited
    Inventor: Wensheng Wang
  • Patent number: 8723156
    Abstract: Resistive-switching memory elements having improved switching characteristics are described, including a memory element having a first electrode and a second electrode, a switching layer between the first electrode and the second electrode comprising hafnium oxide and having a first thickness, and a coupling layer between the switching layer and the second electrode, the coupling layer comprising a material including metal titanium and having a second thickness that is less than 25 percent of the first thickness.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: May 13, 2014
    Assignee: Intermolecular, Inc.
    Inventors: Ronald J. Kuse, Tony P. Chiang, Imran Hashim
  • Publication number: 20140126105
    Abstract: A process for fabricating a capacitor is described. A template layer including a stack of at least one first layer and at least one second layer is formed over a substrate, wherein the at least one first layer and the at least one second layer have different etching selectivities and are arranged alternately. An opening is formed through the template layer. A wet etching process is performed to recess the at least one first layer relative to the at least one second layer, at the sidewall of the opening. A bottom electrode of the capacitor is formed at the bottom of the opening and on the sidewall of the opening, and then the template layer is removed.
    Type: Application
    Filed: November 2, 2012
    Publication date: May 8, 2014
    Inventors: Chi-Hsiang Kuo, Cheng-Shun Chen, Chang-Yao Hsieh
  • Patent number: 8716100
    Abstract: Embodiments of MIM capacitors may be embedded into a thick IMD layer with enough thickness (e.g., 10 K?˜30 K?) to get high capacitance, which may be on top of a thinner IMD layer. MIM capacitors may be formed among three adjacent metal layers which have two thick IMD layers separating the three adjacent metal layers. Materials such as TaN or TiN are used as bottom/top electrodes & Cu barrier. The metal layer above the thick IMD layer may act as the top electrode connection. The metal layer under the thick IMD layer may act as the bottom electrode connection. The capacitor may be of different shapes such as cylindrical shape, or a concave shape. Many kinds of materials (Si3N4, ZrO2, HfO2, BST . . . etc) can be used as the dielectric material. The MIM capacitors are formed by one or two extra masks while forming other non-capacitor logic of the circuit.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: May 6, 2014
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Kuo-Chyuan Tzeng, Luan C. Tran, Chen-Jong Wang, Kuo-Chi Tu, Hsiang-Fan Lee
  • Publication number: 20140120687
    Abstract: In one aspect, a method of fabricating a memory cell capacitor includes the following steps. At least one trench is formed in a silicon wafer. A thin layer of metal is deposited onto the silicon wafer, lining the trench, using a conformal deposition process under conditions sufficient to cause at least a portion of the metal to self-diffuse into portions of the silicon wafer exposed within the trench forming a metal-semiconductor alloy. The metal is removed from the silicon wafer selective to the metal-semiconductor alloy such that the metal-semiconductor alloy remains. The silicon wafer is annealed to react the metal-semiconductor alloy with the silicon wafer to form a silicide, wherein the silicide serves as a bottom electrode of the memory cell capacitor. A dielectric is deposited into the trench covering the bottom electrode. A top electrode is formed in the trench separated from the bottom electrode by the dielectric.
    Type: Application
    Filed: October 31, 2012
    Publication date: May 1, 2014
    Applicant: International Business Machines Corporation
    Inventors: Qing Cao, Sunfei Fang, Zhengwen Li, Fei Liu, Zhen Zhang
  • Publication number: 20140117497
    Abstract: On-chip decoupling capacitors and methods for placing the same are disclosed in which designated spaces are created between the active circuits to insert designated capacitor cells. The designated capacitor cells may be placed in designated areas of the integrated circuit that are not simply spaces left empty by cell placement or frontier areas in or around the route, and the dimensions (e.g., height) of the designated capacitor cells may be selected to optimize (increase) capacitance efficiency. The capacitor cells may also be placed to target and reduce the interference between a digital core (aggressor) circuit and a victim analog circuit.
    Type: Application
    Filed: October 30, 2012
    Publication date: May 1, 2014
    Applicant: SILICON LABORATORIES INC.
    Inventors: Vitor M. Pereira, Trent O. Dudley, Jessica P. Davis
  • Patent number: 8709890
    Abstract: An ETSOI transistor and a combination of capacitors, junction diodes, bank end contacts and resistors are respectively formed in a transistor and capacitor region thereof by etching through an ETSOI and BOX layers in a replacement gate HK/MG flow. The capacitor and other devices formation are compatible with an ETSOI replacement gate CMOS flow. A low resistance capacitor electrode makes it possible to obtain a high quality capacitor, and devices. The lack of topography during dummy gate patterning are achieved by lithography in combination accompanied with appropriate etch.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: April 29, 2014
    Assignee: International Business Machines Corporation
    Inventors: Kangguo Cheng, Thomas N. Adam, Ali Khakifirooz, Alexander Reznicek
  • Publication number: 20140097516
    Abstract: A high-voltage metal capacitor with easy integration into existing semiconductor manufacturing processes can provide isolation capacitors up to several kilovolts. The capacitor includes a support layer with internal structure, including a lower place, a bond pad on the support layer, an upper plate disposed on the support layer, the upper plate being arranged above the lower plate, a dielectric layer, at least part of which is between the lower and upper plates, and a passivation layer, at least part of which covers at least part of the upper plate and part of the dielectric layer. A first opening extends from the surface through the passivation and dielectric layers to the lower plate, and a second opening extends from the surface through the passivation layer to the upper plate. A method of manufacturing the capacitor.
    Type: Application
    Filed: October 10, 2012
    Publication date: April 10, 2014
    Inventors: Jerôme Guillaume Anna DUBOIS, Piet WESSELS
  • Patent number: 8692306
    Abstract: A semiconductor substrate has at least two active regions, each having at least one active device that includes a gate electrode layer, and a shallow trench isolation (STI) region between the active regions. A decoupling capacitor comprises first and second dummy conductive patterns formed in the same gate electrode layer over the STI region. The first and second dummy conductive regions are unconnected to any of the at least one active device. The first dummy conductive pattern is connected to a source of a first potential. The second dummy conductive pattern is connected to a source of a second potential. A dielectric material is provided between the first and second dummy conductive patterns.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: April 8, 2014
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventor: Chung-Hui Chen
  • Patent number: 8693163
    Abstract: A device includes a substrate having a front surface and a back surface opposite the front surface. A capacitor is formed in the substrate and includes a first capacitor plate; a first insulation layer encircling the first capacitor plate; and a second capacitor plate encircling the first insulation layer. Each of the first capacitor plate, the first insulation layer, and the second capacitor plate extends from the front surface to the back surface of the substrate.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: April 8, 2014
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: An-Jhih Su, Chi-Chun Hsieh, Tzu-Yu Wang, Wei-Cheng Wu, Hsien-Pin Hu, Shang-Yun Hou, Wen-Chih Chiou, Shin-Puu Jeng
  • Patent number: 8691657
    Abstract: Corona effect in a monolithic microwave integrated circuit (MMIC) is prevented by disposing a bottom metal layer on a substrate, defining a conductive via through the substrate electrically contacting the bottom metal layer, the conductive via further connected to a reference electrical potential, disposing a layer of dielectric material on a region of the bottom metal layer, forming a component metal layer over the conductive via and in electrical communication with the via and the bottom metal layer to define an electrical component, forming a top metal layer on the layer of dielectric material, the layer of dielectric layer interposed between the top metal layer and the bottom metal layer to thereby define an MMIC capacitor on the substrate, the top metal layer of the MMIC capacitor being separated from the electrical component, and disposing a passivation layer adjacent and conformal to a side wall of the top metal layer.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: April 8, 2014
    Assignee: Lockheed Martin Corporation
    Inventor: Kevin L. Robinson