With Means To Insulate Adjacent Storage Nodes (e.g., Channel Stops Or Field Oxide) Patents (Class 257/305)
  • Patent number: 8283714
    Abstract: Channels of two transistors are vertically formed on portions of two opposite side surfaces of one active region, and gate electrodes are vertically formed on a device isolation layer contacting the channels of the active region. A common bit line contact plug is formed in the central portions of the active region, two storage node contact plugs are formed on both sides of the bit line contact plug, and an insulating spacer is formed on a side surface of the bit line contact plug. A word line, a bit line, and a capacitor are sequentially stacked on the semiconductor substrate, like a conventional semiconductor memory device. Thus, effective space arrangement of a memory cell is possible such that a 4F2 structure is constituted, and a conventional line and contact forming process can be applied such that highly integrated semiconductor memory device is readily fabricated.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: October 9, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyeoung-won Seo, Bong-soo Kim, Dong-gun Park, Kang-yoon Lee, Jae-man Yoon, Seong-goo Kim, Seung-bae Park
  • Patent number: 8264029
    Abstract: The present invention provides a semiconductor device that has a shorter distance between the bit lines and easily achieves higher storage capacity and density, and a method of manufacturing such a semiconductor device. The semiconductor device includes: first bit lines formed on a substrate; an insulating layer that is provided between the first bit lines on the substrate, and has a higher upper face than the first bit lines; channel layers that are provided on both side faces of the insulating layer, and are coupled to the respective first bit lines; and charge storage layers that are provided on the opposite side faces of the channel layers from the side faces on which the insulating layers are formed.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: September 11, 2012
    Assignee: Spansion LLC
    Inventors: Yukio Hayakawa, Hiroyuki Nansei
  • Patent number: 8258039
    Abstract: A manufacturing method of a semiconductor device includes: forming a wiring in a first interlayer insulating layer in a first region; etching an surface portion of the first interlayer insulating layer in a second region; forming a plurality of opening portions extended below in the etched region; and forming a lower electrode layer, a dielectric layer, and a common upper electrode in each of the plurality of opening portions to form a plurality of capacitance portions. The step of forming the plurality of capacitance portions, includes: forming the common upper electrode so that an upper surface of the first interlayer insulating layer and an upper surface of the common upper electrode approximately lie in the same plane.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: September 4, 2012
    Assignee: Renesas Electronics Corporation
    Inventor: Ken Inoue
  • Patent number: 8159014
    Abstract: A silicon-on-insulator device has a localized biasing structure formed in the insulator layer of the SOI. The localized biasing structure includes a patterned conductor that provides a biasing signal to distinct regions of the silicon layer of the SOI. The conductor is recessed into the insulator layer to provide a substantially planar interface with the silicon layer. The conductor is connected to a bias voltage source. In an embodiment, a plurality of conductor is provided that respectively connected to a plurality of voltage sources. Thus, different regions of the silicon layer are biased by different bias signals.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: April 17, 2012
    Assignee: Micron Technology, Inc.
    Inventors: Fernando Gonzalez, John K. Zahurak
  • Patent number: 8154064
    Abstract: The invention includes semiconductor constructions, and also includes methods of forming pluralities of capacitor devices. An exemplary method of the invention includes forming conductive storage node material within openings in an insulative material to form conductive containers. A retaining structure lattice is formed in physical contact with at least some of the containers, and subsequently the insulative material is removed to expose outer surfaces of the containers. The retaining structure can alleviate toppling or other loss of structural integrity of the container structures. The electrically conductive containers correspond to first capacitor electrodes. After the outer sidewalls of the containers are exposed, dielectric material is formed within the containers and along the exposed outer sidewalls. Subsequently, a second capacitor electrode is formed over the dielectric material. The first and second capacitor electrodes, together with the dielectric material, form a plurality of capacitor devices.
    Type: Grant
    Filed: August 10, 2010
    Date of Patent: April 10, 2012
    Assignee: Micron Technology, Inc.
    Inventors: H. Montgomery Manning, Thomas M. Graettinger
  • Patent number: 8134195
    Abstract: A semiconductor device, and a method of fabricating the semiconductor device, which is able to prevent a leaning phenomenon from occurring between the adjacent storage nodes. The method includes forming a plurality of multi-layered pillar type storage nodes each of which is buried in a plurality of mold layers, wherein the uppermost layers of the multi-layered pillar type storage nodes are fixed by a support layer, etching a portion of the support layer to form an opening, and supplying an etch solution through the opening to remove the multiple mold layers. A process of depositing and etching the mold layer by performing the process 2 or more times to form the multi-layered pillar type storage node. Thus, the desired capacitance is sufficiently secured and the leaning phenomenon is avoided between adjacent storage nodes.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: March 13, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventors: Kee-Jeung Lee, Jae-Sung Roh, Deok-Sin Kil, Young-Dae Kim, Jin-Hyock Kim, Kwan-Woo Do, Kyung-Woong Park, Jeong-Yeop Lee
  • Patent number: 8106438
    Abstract: The present teachings relate to a method of forming a container capacitor structure on a substrate. In one embodiment, the method comprises etching a recess in the substrate, depositing a first conductive layer on the substrate so as to overlie the substrate and the recess, depositing a filler layer so as to overlie the first conductive layer and fill the recess, and etching the first and second conductive layers so as to define a lower electrode within the recess. The method further comprises forming a cap layer on the lower electrode so as to overlie the first conductive layer and the filler layer and etching at least a portion of the substrate away from the lower electrode to thereby at least partially isolate the lower electrode. Subsequently, the remainder of the capacitor structure may be formed by depositing a dielectric layer on the lower electrode and depositing a second conductive layer on the dielectric layer so as to form an upper electrode.
    Type: Grant
    Filed: August 22, 2005
    Date of Patent: January 31, 2012
    Assignee: Micron Technology, Inc.
    Inventors: Guy Blalock, Scott Meikle
  • Patent number: 8106437
    Abstract: A semiconductor storage device is provided, which inhibits shorts between cells to improve operational reliability and contributes to high-speed operation. An active region (7) where DRAM cells are formed is defined by an isolation trench (40) formed in a silicon substrate (1). The isolation trench (40) has an isolation insulating film (4) formed therein. Each DRAM cell includes a MOS transistor having a gate electrode (12) with sidewalls (13), and a capacitor having an upper electrode (22) with sidewalls (23). A recess (41) is formed in the upper portion of the isolation trench (40), and the upper electrode (22) of the capacitor has a buried portion buried in the recess (41). The outer edge (E1) of the buried portion of the upper electrode (22) is located inside the outer edge (E2) of the sidewalls (23).
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: January 31, 2012
    Assignee: Renesas Electronics Corporation
    Inventors: Hidenori Sato, Hiroyasu Nousou, Yoshitaka Fujiishi, Hiroaki Sekikawa
  • Patent number: 8063404
    Abstract: A semiconductor memory device positioned on an SOI substrate. A semiconductor memory device includes two transistors with three terminals which serve as a source, a reading drain and a writing drain, respectively. The writing drain is heavily-doped for high writing efficiency. A floating body region for storing charges is also heavily-doped to reach long data retention time.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: November 22, 2011
    Assignee: Nanya Technology Corp.
    Inventor: Shing-Hwa Renn
  • Patent number: 8053824
    Abstract: Apparatuses and methods for increasing well distributed, high quality-factor on-chip capacitance of integrated circuit devices are disclosed. In one aspect, an integrated circuit device structure includes a first metal line implemented on a metallization layer of a semiconductor substrate, the first metal line having a first set of metal fingers extending therefrom; and a second metal line electrically isolated from the first metal line, the second metal line having a second set of metal fingers extending therefrom, the first set of metal fingers and the second set of metal fingers capacitively coupled. The basic structure of metal lines with interlocking metal fingers may be repeated on multiple adjacent metallization layers, with the metal lines oriented either in parallel or perpendicular.
    Type: Grant
    Filed: April 3, 2006
    Date of Patent: November 8, 2011
    Assignee: LSI Corporation
    Inventors: Greg Winn, Steve Howard
  • Patent number: 8039889
    Abstract: A non-volatile memory device includes a semiconductor substrate having a first section including a substantially planar first top surface, a second section including a substantially planar second top surface, and a sidewall extending between the first and second top surfaces. The second top surface of the substrate is closer to a bottom surface of the substrate than is the first top surface. A charge storage pattern extends on the first and second top surfaces of the substrate and along the sidewall therebetween. A source region in the first section of the substrate extends from the first top surface into the second section of the substrate and has a stepped portion defined by the sidewall and the second top surface. Related fabrication methods and methods of operation are also discussed.
    Type: Grant
    Filed: November 26, 2007
    Date of Patent: October 18, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Weon-Ho Park
  • Patent number: 8030697
    Abstract: A cell structure of a semiconductor device includes an active region, having a concave portion, and an inactive region that defines the active region. A gate pattern in the active region is arranged perpendicular to the active region. A landing pad on the active region and the inactive region contacts the active region. A bit line pattern on the inactive region intersects the gate pattern perpendicularly, the bit line pattern being electrically connected to the landing pad and having a first protrusion corresponding to the concave portion of the active region.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: October 4, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Min-Hee Cho, Seung-Bae Park
  • Patent number: 8022457
    Abstract: Channels of two transistors are vertically formed on portions of two opposite side surfaces of one active region, and gate electrodes are vertically formed on a device isolation layer contacting the channels of the active region. A common bit line contact plug is formed in the central portions of the active region, two storage node contact plugs are formed on both sides of the bit line contact plug, and an insulating spacer is formed on a side surface of the bit line contact plug. A word line, a bit line, and a capacitor are sequentially stacked on the semiconductor substrate, like a conventional semiconductor memory device. Thus, effective space arrangement of a memory cell is possible such that a 4F2 structure is constituted, and a conventional line and contact forming process can be applied such that highly integrated semiconductor memory device is readily fabricated.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: September 20, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyeoung-won Seo, Bong-soo Kim, Dong-gun Park, Kang-yoon Lee, Jae-man Yoon, Seong-goo Kim, Seung-bae Park
  • Patent number: 8017493
    Abstract: A process of forming a semiconductor process fabricated device which contains a trench, hole or gap filled with a conformally deposited material is disclosed. A sacrificial planarizing layer is formed on the fill material, and the device is planarized using a selective RIE process which etches the fill material faster than the sacrificial planarizing layer. An overetch step completes the planarization process.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: September 13, 2011
    Assignee: Texas Instruments Incorporated
    Inventors: Abbas Ali, Seetharaman Sridhar
  • Patent number: 8003471
    Abstract: Systems and methods for raised source/drain with super steep retrograde channel. In accordance with a first embodiment of the present invention, in one embodiment, a semiconductor device comprises a substrate comprising a surface and a gate oxide disposed above the surface comprising a gate oxide thickness. The semiconductor device further comprises a super steep retrograde channel region formed at a depth below the surface. The depth is about ten to thirty times the gate oxide thickness. Embodiments in accordance with one embodiment may provide a more desirable body biasing voltage to threshold voltage characteristic than is available under the conventional art.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: August 23, 2011
    Inventors: James B. Burr, Archisman Bagchi, Jawad Nasrullah
  • Patent number: 7994073
    Abstract: A low stress sacrificial cap layer 120 having a silicon oxide liner film 130, a low stress silicon film 140, and a silicon nitride film. Alternatively, a low stress sacrificial cap layer 410 having a silicon oxide liner film 130 and a graded silicon nitride film 420. Also, methods 300, 500 for fabricating a transistor 20, 400 having a low stress sacrificial cap layer 120, 410.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: August 9, 2011
    Assignee: Texas Instruments Incorporated
    Inventors: Jiong-Ping Lu, Periannan Chidambaram, Srinivasan Chakravarthi
  • Patent number: 7982284
    Abstract: A semiconductor component includes a semiconductor body, in which are formed: a substrate of a first conduction type, a buried semiconductor layer of a second conduction type arranged on the substrate, and a functional unit semiconductor layer of a third conduction type arranged on the buried semiconductor layer, in which at least two semiconductor functional units arranged laterally alongside one another are provided. The buried semiconductor layer is part of at least one semiconductor functional unit, the semiconductor functional units being electrically insulated from one another by an isolation structure which permeates the functional unit semiconductor layer, the buried semiconductor layer, and the substrate. The isolation structure includes at least one trench and an electrically conductive contact to the substrate, the contact to the substrate being electrically insulated from the functional unit semiconductor layer and the buried layer by the at least one trench.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: July 19, 2011
    Assignee: Infineon Technologies AG
    Inventors: Andreas Meiser, Walter Hartner, Hermann Gruber, Dietrich Bonart, Thomas Gross
  • Patent number: 7977724
    Abstract: A capacitor includes a cylindrical storage electrode formed on a substrate. A ring-shaped stabilizing member encloses an upper portion of the storage electrode to structurally support the storage electrode and an adjacent storage electrode. The ring-shaped stabilizing member is substantially perpendicular to the storage electrode and extends in a direction where the adjacent storage electrode is arranged. A dielectric layer is formed on the storage electrode. A plate electrode is formed on the dielectric layer.
    Type: Grant
    Filed: October 22, 2007
    Date of Patent: July 12, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Je-Min Park
  • Patent number: 7968929
    Abstract: The present disclosure provides on-chip decoupling capacitor structures having trench capacitors integrated with a passive capacitor formed in the back-end-of-line wiring to provide an improved overall capacitance density. In some embodiments, the structure includes at least one deep trench capacitor and a passive capacitor formed in at least two back-end-of-line wiring levels. The trench and passive capacitors are in electrical communication through one of the wiring levels. In other embodiments, the structure includes at least one deep trench capacitor, a first back-end-of-line wiring level, and a second back-end-of-line wiring level. The deep trench capacitor with a dielectric that has an upper edge that terminates at a lower surface of a shallow trench isolation region. The first wiring level is in electrical communication with the trench capacitor. The second wiring level is vertically electrically connected to the first wiring level by vertical connectors so as to form a passive capacitor.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: June 28, 2011
    Assignee: International Business Machines Corporation
    Inventors: Anil K. Chinthakindi, Eric Thompson
  • Patent number: 7956412
    Abstract: A dielectric material layer is formed on a bottom surface and sidewalls of a trench in a semiconductor substrate. The silicon oxide layer forms a drift region dielectric on which a field plate is formed. Shallow trench isolation may be formed prior to formation of the drift region dielectric, or may be formed utilizing the same processing steps as the formation of the drift region dielectric. A gate dielectric layer is formed on exposed semiconductor surfaces and a gate conductor layer is formed on the gate dielectric layer and the drift region dielectric. The field plate may be electrically tied to the gate electrode, may be an independent electrode having an external bias, or may be a floating electrode. The field plate biases the drift region to enhance performance and extend allowable operating voltage of a lateral diffusion field effect transistor during operation.
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: June 7, 2011
    Assignee: International Business Machines Corporation
    Inventors: Natalie B. Feilchenfeld, Jeffrey P. Gambino, Louis D. Lanzerotti, Benjamin T. Voegeli, Steven H. Voldman, Michael J. Zierak
  • Patent number: 7911006
    Abstract: A process and an architecture related to a vertical MOSFET device and a capacitor for use in integrated circuits. Generally, the integrated circuit structure includes a semiconductor layer with a major surface formed along a plane thereof and further including a first doped region formed in the surface. A second doped region of a different conductivity type than the first doped region is positioned over the first region. A third doped region of a different conductivity type than the second region is positioned over the second region. In one embodiment of the invention, a semiconductor device includes a first layer of semiconductor material and a first field-effect transistor having a first source/drain region formed in the first layer. A channel region of the transistor is formed over the first layer and an associated second source/drain region is formed over the channel region. The integrated circuit further includes a capacitor having a bottom plate, dielectric layer and a top capacitor plate.
    Type: Grant
    Filed: November 2, 2009
    Date of Patent: March 22, 2011
    Assignee: Agere Systems Inc.
    Inventors: Samir Chaudhry, Paul Arthur Layman, John Russell McMacken, J. Ross Thomson, Jack Qingsheng Zhao
  • Patent number: 7872329
    Abstract: Effective area of a capacitor is to be increased while suppressing increase in number of manufacturing steps. In a semiconductor device, a silicon substrate includes a plurality of first recessed portions having a first depth from the main surface thereof, a second recessed portion provided in a region other than the first recessed portion and having a second depth from the main surface, and a third recessed portion provided in at least one of the plurality of first recessed portions and having a third depth from the bottom portion of the first recessed portion. The second recessed portion and the third recessed portion have the same depth, and a decoupling condenser is provided so as to fill the at least one of the first recessed portion and the third recessed portion provided therein, and an isolation insulating layer is provided so as to fill the remaining first recessed portions, and the second recessed portion is filled with a gate electrode.
    Type: Grant
    Filed: July 18, 2008
    Date of Patent: January 18, 2011
    Assignee: Renesas Electronics Corporation
    Inventor: Kazuhiko Sanada
  • Patent number: 7851858
    Abstract: Provided is a semiconductor device formed to an SOI substrate including a MOS transistor in which a parasitic MOS transistor is suppressed. The semiconductor device formed on the SOI substrate by employing a LOCOS process is structured such that a part of a polysilicon layer to becomes a gate electrode includes: a first conductivity type polysilicon region corresponding to a region of the silicon active layer which has a constant thickness and is to become a channel; and second conductivity type polysilicon regions corresponding to LOCOS isolation edges in each of which a thickness of the silicon active layer decreases.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: December 14, 2010
    Assignee: Seiko Instruments Inc.
    Inventors: Hideo Yoshino, Hisashi Hasegawa
  • Patent number: 7842990
    Abstract: A nonvolatile ferroelectric memory device includes a plurality of unit cells. Each of the unit cells includes a cell capacitor and a cell transistor. The cell capacitor includes a storage node, a ferroelectric layer, and a plate line. The cell capacitors of more than one of the plurality of unit cells are provided in a trench.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: November 30, 2010
    Assignee: Hynix Semiconductor Inc.
    Inventor: Hee Bok Kang
  • Patent number: 7791124
    Abstract: A bottle shaped trench for an SOI capacitor is formed by a simple processing sequence. A non-conformal dielectric layer with an optional conformal dielectric diffusion barrier layer underneath is formed on sidewalls of a deep trench. Employing an isotropic etch, the non-conformal dielectric layer is removed from a bottom portion of the deep trench, leaving a dielectric spacer covering sidewalls of the buried insulator layer and the top semiconductor layer. The bottom portion of the deep trench is expanded to form a bottle shaped trench, and a buried plated is formed underneath the buried insulator layer. The dielectric spacer may be recessed during formation of a buried strap to form a graded thickness dielectric collar around the upper portion of an inner electrode. Alternately, the dielectric spacer may be removed prior to formation of a buried strap.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: September 7, 2010
    Assignee: International Business Machines Corporation
    Inventors: Kangguo Cheng, Herbert L. Ho, Paul C. Parries, Geng Wang
  • Patent number: 7781838
    Abstract: An integrated circuit including a floating body transistor and method. One embodiment provides a transistor including a body region formed in a first portion and a first and a second source/drain region formed in a second and a third portion. The body region is formed in a semiconductor substrate. The integrated circuit further includes a buried structure disposed at least below the body region and a first and a second insulating structure including an insulating material and being disposed at least between the body region and regions of the second and the third portion below the first and the second source drain region, wherein the first and the second insulating structure contact the buried structure.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: August 24, 2010
    Assignee: Qimonda AG
    Inventor: Dongping Wu
  • Patent number: 7777266
    Abstract: An integrated circuit includes a conductive line, the conductive line having a conductive layer made of a metal or a first compound including a metal and a capping layer made of a second compound comprising the metal, the capping layer being in contact with the conductive layer, the first compound being different from the second compound.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: August 17, 2010
    Assignee: Qimonda AG
    Inventors: Peter Baars, Andreas Eifler, Klaus Muemmler, Stefan Tegen
  • Patent number: 7777294
    Abstract: On a semiconductor substrate, a well is formed. In the well, one MOS transistor including a gate electrode, a source region, a source field limiting layer and a source/drain region, and another MOS transistor including a gate electrode, a drain electrode, a drain field limiting layer and a source/drain region are formed. The one and another MOS transistors are connected in series through the source/drain region common to the two transistors. Accordingly, a semiconductor device can be provided in which increase in pattern layout area is suppressed when elements including a high-breakdown voltage MOS transistor are to be connected in series.
    Type: Grant
    Filed: October 7, 2005
    Date of Patent: August 17, 2010
    Assignee: Renesas Technology Corp.
    Inventor: Masatoshi Taya
  • Patent number: 7772634
    Abstract: A channel stop region is formed immediately under an STI, and thereafter, an ion implantation is performed with conditions in which an impurity is doped into an upper layer portion of an active region, and at the same time, the impurity is also doped into immediately under another STI, and a channel dose region is formed at the upper layer portion of the active region, and another channel stop region is formed immediately under the STI.
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: August 10, 2010
    Assignee: Fujitsu Semiconductor Limited
    Inventors: Masayoshi Asano, Yoshiyuki Suzuki
  • Patent number: 7763519
    Abstract: A method for fabricating an interconnect arrangement with increased capacitive coupling is described. A trench structure is formed in a first dielectric having a capacitor region with a first aspect ratio and an interconnect region with a second aspect ratio connected thereto. The trench structure of the interconnect region is completely filled by a first interconnect. The trench structure of the capacitor region is only partially filled by a first capacitor electrode and is completely filled by a capacitor dielectric and a second capacitor electrode. In a second dielectric formed thereon, a second interconnect with a contact via is formed, which is connected to the second capacitor electrode.
    Type: Grant
    Filed: August 16, 2005
    Date of Patent: July 27, 2010
    Assignee: Infineon Technologies AG
    Inventors: Hans-Joachim Barth, Jürgen Holz
  • Patent number: 7718505
    Abstract: The method of forming a semiconductor structure in a substrate comprises, forming a first trench with a first width We and a second trench with a second width Wc, wherein the first width We is larger than the second width Wc, depositing a protection material, lining the first trench, covering the substrate surface and filling the second trench and removing partially the protection material, wherein a lower portion of the second trench remains filled with the protection material.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: May 18, 2010
    Assignee: Infineon Technologies Austria AG
    Inventors: Nicola Vannucci, Hubert Maier
  • Patent number: 7705386
    Abstract: A memory cell has an access transistor and a capacitor with an electrode disposed within a deep trench. STI oxide covers at least a portion of the electrode, and a liner covers a remaining portion of the electrode. The liner may be a layer of nitride over a layer of oxide. Some of the STI may cover a portion of the liner. In a memory array a pass wordline may be isolated from the electrode by the STI oxide and the liner.
    Type: Grant
    Filed: January 7, 2008
    Date of Patent: April 27, 2010
    Assignee: International Business Machines Corporation
    Inventors: Kangguo Cheng, Johnathan E. Faltermeier, Herbert L. Ho, Paul C. Parries
  • Patent number: 7700984
    Abstract: It is an object of the present invention to provide a semiconductor device capable of additionally recording data at a time other than during manufacturing and preventing forgery due to rewriting and the like. Moreover, another object of the present invention is to provide an inexpensive, nonvolatile, and highly-reliable semiconductor device. A semiconductor device includes a first conductive layer, a second conductive layer, and an organic compound layer between the first conductive layer and the second conductive layer, wherein the organic compound layer can have the first conductive layer and the second conductive layer come into contact with each other when Coulomb force generated by applying potential to one or both of the first conductive layer and the second conductive layer is at or over a certain level.
    Type: Grant
    Filed: May 1, 2006
    Date of Patent: April 20, 2010
    Assignee: Semiconductor Energy Laboratory Co., Ltd
    Inventor: Mikio Yukawa
  • Patent number: 7687843
    Abstract: A process for producing structures in a semiconductor zone, has the steps of a) producing a trench (2) in the semiconductor zone (18), b) filling the trench with a photoresist (19), and c) exposing the photoresist (19) using ion beams (20), d) developing the photoresist (19). The energy density and ion dose for the ion beams (20) are selected in such a way that the photoresist (19) is only chemically changed at defined depths, so as to produce two regions, in the first region (21) of which the photoresist has been chemically changed at the defined depths by the ion beams (20), and in the second region of which the photoresist has been left chemically unchanged, so that during the developing step the photoresist is removed in precisely one of the two regions.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: March 30, 2010
    Assignee: Infineon Technologies AG
    Inventor: Michael Rueb
  • Patent number: 7682925
    Abstract: The disclosure concerns a capacitor including a trench; an insulation layer; a first polysilicon layer; a first patterned dielectric layer; a second polysilicon layer patterned into a plurality of vertical bars in the trench; a second dielectric layer along surfaces of the first dielectric layer and the second patterned polysilicon layer; and a third polysilicon layer on the second dielectric layer.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: March 23, 2010
    Assignee: Dongbu Electronics Co., Ltd.
    Inventor: Nam Joo Kim
  • Patent number: 7683442
    Abstract: Systems and methods for raised source/drain with super steep retrograde channel. In accordance with a first embodiment of the present invention, in one embodiment, a semiconductor device comprises a substrate comprising a surface and a gate oxide disposed above the surface comprising a gate oxide thickness. The semiconductor device further comprises a super steep retrograde channel region formed at a depth below the surface. The depth is about ten to thirty times the gate oxide thickness. Embodiments in accordance with the present invention may provide a more desirable body biasing voltage to threshold voltage characteristic than is available under the conventional art.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: March 23, 2010
    Inventors: James B. Burr, Archisman Bagchi, Jawad Nasrullah
  • Patent number: 7683416
    Abstract: A design structure for capacitor having a suitably large value for decoupling applications is formed in a trench defined by isolation structures such as recessed isolation or shallow trench isolation. The capacitor provides a contact area coextensive with an active area and can be reliably formed individually or in small numbers. Plate contacts are preferably made through implanted regions extending to or between dopant diffused regions forming a capacitor plate. The capacitor can be formed by a process subsequent to formation of isolation structures such that preferred soft mask processes can be used to form the isolation structures and process commonality and compatibility constraint are avoided while the capacitor forming processes can be performed in common with processing for other structures.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: March 23, 2010
    Assignee: International Business Machines Corporation
    Inventors: Anil K. Chinthakindi, Deok-kee Kim, Xi Li
  • Patent number: 7667258
    Abstract: Double-sided container capacitors are formed using sacrificial layers. A sacrificial layer is formed within a recess in a structural layer. A lower electrode is formed within the recess. The sacrificial layer is removed to create a space to allow access to the sides of the structural layer. The structural layer is removed, creating an isolated lower electrode. The lower electrode can be covered with a capacitor dielectric and upper electrode to form a double-sided container capacitor.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: February 23, 2010
    Assignee: Micron Technology, Inc.
    Inventors: Gurtej S. Sandhu, Kevin R. Shea, Chris W. Hill, Kevin J. Torek
  • Patent number: 7651908
    Abstract: A method of fabricating an image sensor which reduces fabricating costs through simultaneous formation of capacitor structures and contact structures may be provided. The method may include forming a lower electrode on a substrate, forming an interlayer insulating film on the substrate, the interlayer insulating film may have a capacitor hole to expose a first portion of the lower electrode.
    Type: Grant
    Filed: February 15, 2007
    Date of Patent: January 26, 2010
    Assignee: Samsung Electronic Co., Ltd.
    Inventors: Gil-Sang Yoo, Byung-Jun Park
  • Patent number: 7564093
    Abstract: A semiconductor device comprises static random access memory (SRAM) cells formed in a semiconductor substrate, first deep trenches isolating each boundary of an n-well and a p-well of the SRAM cells, second deep trenches isolating the SRAM cells into each unit bit cell, and at least one or more contacts taking substance voltage potentials in regions isolated by the first and second deep trenches. Then, the device becomes possible to improve a soft error resistance without increasing the device in size.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: July 21, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Satoshi Matsuda
  • Patent number: 7541634
    Abstract: A trench capacitor including a substrate, at least a group of capacitor units, an isolation structure and a conductive layer is described. The substrate includes a first trench and a second trench. The group of capacitor units is disposed in the substrate. The group of capacitor units includes a first capacitor disposed in the first trench and a second capacitor disposed in the second trench. The isolation structure is disposed in the substrate between the first capacitor and the second capacitor. The conductive layer is disposed in the substrate above the isolation structure and electrically connected to the first upper electrode and the second upper electrode.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: June 2, 2009
    Assignee: United Microelectronics Corp.
    Inventors: Yi-Nan Su, Jun-Chi Huang
  • Publication number: 20090121270
    Abstract: A design structure of a trench capacitor with an isolation collar in a semiconductor substrate where the substrate adjacent to the isolation collar is free of dopants caused by auto-doping. The design structure resulting from the means for fabricating the trench capacitor includes the methods of forming a trench in the semiconductor substrate; depositing a dielectric layer on a sidewall of the trench; filling the trench with a first layer of undoped polysilicon; etching away the first layer of undoped polysilicon and the dielectric layer from an upper section of the trench whereby the semiconductor substrate is exposed at the sidewall in the upper section of the trench; forming an isolation collar layer on the sidewall in the upper section of the trench; and filling the trench with a second layer of doped polysilicon.
    Type: Application
    Filed: November 8, 2007
    Publication date: May 14, 2009
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Kangguo Cheng
  • Patent number: 7508022
    Abstract: In order to improve the discharging speed of potential from a match line, a semiconductor device includes a capacitor, a memory transistor having a source/drain region connected to a storage node of the capacitor, a search transistor having a gate electrode connected to the storage node, and a stacked contact connecting a match line and the source/drain region of the search transistor. The storage node has a configuration in which a sidewall of the storage node facing the match line partially recedes away from the stacked contact such that a portion of the sidewall in front of the stacked contact in plan view along the direction of the match line is located farther away from the stacked contact than the remaining portion of the sidewall.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: March 24, 2009
    Assignee: Renesas Technology Corp.
    Inventors: Atsushi Amo, Shunji Kubo
  • Patent number: 7498627
    Abstract: In order to improve the discharging speed of potential from a match line, a semiconductor device includes a capacitor, a memory transistor having a source/drain region connected to a storage node of the capacitor, a search transistor having a gate electrode connected to the storage node, and a stacked contact connecting a match line and the source/drain region of the search transistor. The storage node has a configuration in which a sidewall of the storage node facing the match line partially recedes away from the stacked contact such that a portion of the sidewall in front of the stacked contact in plan view along the direction of the match line is located farther away from the stacked contact than the remaining portion of the sidewall.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: March 3, 2009
    Assignee: Renesas Technology Corp.
    Inventors: Atsushi Amo, Shunji Kubo
  • Patent number: 7485905
    Abstract: An electrostatic discharge protection device comprising a multi-finger gate, a first lightly doped region of a second conductivity, a first heavily doped region of the second conductivity, and a second lightly doped region of the second conductivity. The multi-finger gate comprises a plurality of fingers mutually connected in parallel over an active region of a first conductivity. The first lightly doped region of a second conductivity is disposed in the semiconductor substrate and between two of the fingers. The first heavily doped region of the second conductivity is disposed in the first lightly doped region of the second conductivity. The second lightly doped region of the second conductivity is beneath and adjoins the first lightly doped region of the second conductivity.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: February 3, 2009
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Feng-Chi Hung, Jian-Hsing Lee, Hung-Lin Chen, Deng-Shun Chang
  • Patent number: 7459731
    Abstract: An article of manufacture includes a substrate, a relaxed buffer layer disposed on the substrate, and a plurality of isolation regions formed in the relaxed buffer layer. The isolation regions include threading dislocations while the remainder of the relaxed buffer layer is substantially free of threading dislocations. The relaxed buffer layer may be formed from silicon germanium while the substrate may be formed from silicon. A capping layer may be disposed over the relaxed buffer layer.
    Type: Grant
    Filed: August 30, 2006
    Date of Patent: December 2, 2008
    Assignee: The Regents of the University of California
    Inventors: Ya-Hong Xie, Tae-Sik Yoon
  • Patent number: 7456459
    Abstract: The present invention discloses capacitors having via connections and electrodes designed such that they provide a low inductance path, thus reducing needed capacitance, while enabling the use of embedded capacitors for power delivery and other uses. One embodiment of the present invention discloses a capacitor comprising the following: a top capacitor electrode and a bottom capacitor electrode, wherein the top electrode is smaller than the bottom electrode, comprising, on all sides of the capacitor; in an array, a multiplicity of vias located on all sides of the top and bottom capacitor electrodes, wherein the top electrode and the vias connecting to the top electrode act as an inner conductor, and the bottom electrode and the vias connecting to the bottom electrode act as an outer conductor.
    Type: Grant
    Filed: September 6, 2006
    Date of Patent: November 25, 2008
    Assignee: Georgia Tech Research Corporation
    Inventor: Lixi Wan
  • Patent number: 7442981
    Abstract: Provided is a capacitor of a semiconductor device and a method of fabricating the same. In one embodiment, the capacitor includes a lower electrode formed on a semiconductor substrate; a dielectric layer formed on the lower electrode; and an upper electrode that is formed on the dielectric layer. The upper electrode includes a first conductive layer, a second conductive layer, and a third conductive layer stacked sequentially. The first conductive layer comprises a metal layer, a conductive metal oxide layer, a conductive metal nitride layer, or a conductive metal oxynitride layer. The second conductive layer comprises a doped polysilicon germanium layer. The third conductive layer comprises a material having a lower resistance than that of the second conductive layer.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: October 28, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Gab-Jin Nam, Young-Sun Kim, Cha-Young Yoo, Jong-Cheol Lee, Jin-Tae Noh, Jae-Young Ahn, Young-Geun Park, Jae-Hyoung Choi, Jae-Hyun Yeo
  • Publication number: 20080224197
    Abstract: 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: Application
    Filed: March 17, 2008
    Publication date: September 18, 2008
    Applicant: FUJITSU LIMITED
    Inventor: Tetsuya ITO
  • Publication number: 20080217672
    Abstract: An integrated circuit having a memory arrangement including capacitor elements and further capacitor elements is disclosed. One embodiment provides a substrate layer with contact pads and further contact pads; the capacitor elements being disposed in a first level on the substrate layer and connected with the contact pads; the further capacitor elements being disposed in a second level above the first level; contact elements being disposed between the capacitor elements and connected with the further contact pads; the further capacitor elements being disposed above the contact elements and being connected with the contact elements.
    Type: Application
    Filed: March 9, 2007
    Publication date: September 11, 2008
    Applicant: QIMONDA AG
    Inventors: Martin Popp, Ulrike Gruening-von Schwerin, Till Schloesser, Peter Lahnor, Rolf Weis, Odo Wunnicke