Stacked Capacitor Patents (Class 257/306)
  • Patent number: 7659568
    Abstract: An external electrode structure for a monolithic ceramic capacitor provided with a function as a resistance element is capable of preventing a reduction of the external electrode due to baking in a reducing atmosphere, so that Ni or a Ni alloy can be used in an internal electrode and a good electrical connection between the internal electrode and the external electrode is achieved. The external electrodes disposed on an outer surface of a capacitor main body include an electrically conductive layer and a metal plating layer disposed thereon, and the electrically conductive layer includes a compound oxide, e.g., an In—Sn compound oxide, which reacts with Ni or the Ni alloy, and a glass component.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: February 9, 2010
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Mitsuhiro Kusano, Shizuharu Watanabe
  • Publication number: 20100025749
    Abstract: A semiconductor device may include an isolation layer, gate electrodes, an insulating interlayer, an impurity region, a capping layer and a plug. The isolation layer may be formed in the substrate. The gate electrodes may be formed on the substrate. The insulating interlayer may be formed on the gate electrodes. The insulating interlayer may have a contact hole between the gate electrodes. The impurity region may be in the substrate exposed through the contact hole. The capping layer may be on the impurity region. The plug may be on the capping layer. Thus, the impurities may not be lost from the impurity region.
    Type: Application
    Filed: August 3, 2009
    Publication date: February 4, 2010
    Inventors: Jong-Ryeol Yoo, Tai-Su Park, Jong-Hoon Kang, Dong-Chan Kim, Jeong-Do Ryu, Seong-Hoon Jeong, Si-Young Choi, Yu-Gyun Shin
  • Patent number: 7656693
    Abstract: In a memory cell area of a semiconductor device, first, second, and third inter-layer insulating films respectively cover a cell transistor, a bit wiring line, and a capacitor which are connected to each other. In an adjacent peripheral circuit area, a peripheral-circuit transistor is covered with the first inter-layer insulating film, a first-layer wiring line connected to the peripheral-circuit transistor is provided on the first inter-layer insulating film and covered with the second inter-layer insulating film, and a second-layer wiring line is provided on the third inter-layer insulating film. In the memory cell area, a landing pad is provided on the second inter-layer insulating film and between the capacitor and a contact plug for connecting the capacitor to the cell transistor. An assist wiring line connected to the first-layer wiring line is provided on the main surface of the second inter-layer insulating film, on which the landing pad is provided.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: February 2, 2010
    Assignee: Elpida Memory, Inc.
    Inventors: Yoshitaka Nakamura, Mitsutaka Izawa
  • Publication number: 20100019302
    Abstract: In a semiconductor device and a method of manufacturing the same, a substrate is defined into active and non-active regions by a device isolation layer and a recessed portion is formed on the active region. A gate electrode includes a gate insulation layer on an inner sidewall and a bottom of the recessed portion, a lower electrode on the gate insulation layer and an inner spacer on the lower electrode in the recessed portion, and an upper electrode that is positioned on the inner spacer and connected to the lower electrode. Source and drain impurity regions are formed at surface portions of the active region of the substrate adjacent to the upper electrode. Accordingly, the source and drain impurity regions are electrically insulated by the inner spacer in the recessed portion of the substrate like a bridge, to thereby sufficiently prevent gate-induced drain leakage (GIDL) at the gate electrode.
    Type: Application
    Filed: July 23, 2009
    Publication date: January 28, 2010
    Inventors: Sung-Sam Lee, Joon-Seok Moon, Young-Ju Choi
  • 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
  • Publication number: 20100012996
    Abstract: A dynamic random access memory structure comprises a substrate having a first diffusion region and a second diffusion region, a dielectric structure overlaying the substrate, a capacitor contact plug disposed in the dielectric structure and connected to the first diffusion region, a bit-line contact plug disposed in the dielectric structure and connected to the second diffusion region, a metal silicide disposed on the capacitor contact plug, and a capacitive structure disposed on the dielectric structure and connected to the metal silicide.
    Type: Application
    Filed: July 16, 2008
    Publication date: January 21, 2010
    Applicant: PROMOS TECHNOLOGIES INC.
    Inventor: TSUNG DE LIN
  • Publication number: 20100013048
    Abstract: A means for selectively electrically connecting an electrical interconnect line, such as a bit line of a memory cell, with an associated contact stud and electrically isolating the interconnect line from other partially underlying contact studs for other electrical features, such as capacitor bottom electrodes. The interconnect line can be formed partially-connected to all contact studs, thereby allowing the electrical features to be formed in closer proximity to one another for higher levels of integration, and in subsequent steps of fabrication, the contact studs associated with memory cell features other than the interconnect line can be isolated from the interconnect line by the removal of a silicide cap, or the selective etching of a portion of these contact studs, and the formation of an insulating sidewall between the non-selected contact stud and the interconnect line.
    Type: Application
    Filed: July 15, 2009
    Publication date: January 21, 2010
    Inventor: John M. Drynan
  • Patent number: 7649261
    Abstract: A semiconductor device and its manufacture method wherein the semiconductor substrate has first and second insulating films, the first insulating film being an insulating film other than a silicon nitride film formed at least on a side wall of a conductive pattern including at least one layer of metal or metal silicide, and the second insulating film being a silicon nitride film formed to cover the first insulating film and the upper surface and side wall of the conductive pattern. The first insulating film may be formed to cover the upper surface and side wall of the conductive pattern. A semiconductor device and its manufacture method are provided which can realize high integrated DRAMs of 256 M or larger without degrading reliability and stability.
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: January 19, 2010
    Assignee: Fujitsu Microelectronics Limited
    Inventors: Shinichiroh Ikemasu, Narumi Okawa
  • Patent number: 7648878
    Abstract: A pad oxide layer is formed on a substrate. A pad nitride layer is formed on the pad oxide layer. The pad nitride layer and the pad oxide layer are patterned. Predetermined portions of the substrate are etched using the pad nitride layer as an etch barrier to thereby form trenches used as device isolation regions. The trenches are filled with an insulation layer to thereby form device isolation regions. The pad nitride layer is removed. Recesses are formed by etching predetermined portions of the pad oxide layer and the substrate. The pad oxide layer is removed. A gate oxide layer is formed on the recesses and on the substrate. Gate structures of which bottom portions are buried in the recesses on the gate oxide layer are formed.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: January 19, 2010
    Assignee: Hynix Semiconductor Inc.
    Inventor: Tae-Woo Jung
  • Patent number: 7648875
    Abstract: A first interlayer dielectric is formed on a semiconductor substrate. A contact pad is formed to contact the substrate through the first interlayer dielectric. A bitline is formed on the first interlayer dielectric not to contact the contact pad. A second interlayer dielectric is formed and planarized to expose the top of the bitline. A protective layer is formed an entire surface of the resultant structure. A sacrificial layer is formed on the protective layer. The sacrificial layer, the protective layer, and the second interlayer dielectric are patterned between two adjacent bitlines to form a bottom electrode contact hole exposing the contact pad. A conductive layer is formed and planarized to form a bottom electrode contact plug filling the bottom electrode contact hole.
    Type: Grant
    Filed: January 6, 2006
    Date of Patent: January 19, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-Seo Hong, Jung-Woo Seo, Jun-Sik Hong, Jeong-Sic Jeon
  • Patent number: 7645675
    Abstract: A parallel plate capacitor formed in the back end of an integrated circuit employs conductive capacitor plates that are formed simultaneously with the other interconnects on that level of the back end (having the same material, thickness, etc). The capacitor plates are set into the interlevel dielectric using the same process as the other interconnects on that level of the back end (preferably dual damascene). Some versions of the capacitors have perforations in the plates and vertical conductive members connecting all plates of the same polarity, thereby increasing reliability, saving space and increasing the capacitive density compared with solid plates.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: January 12, 2010
    Assignee: International Business Machines Corporation
    Inventors: Douglas D. Coolbaugh, Hanyi Ding, Ebenezer E. Eshun, Michael D. Gordon, Zhong-Xiang He, Anthony K. Stamper
  • Publication number: 20100001331
    Abstract: A semiconductor device includes: a transistor having source and drain regions; first and second contact electrodes embedded in a first interlayer insulating film, and electrically connected to the source region and the drain region, respectively; a third electrode embedded in a second interlayer insulating film positioned in an upper layer of the first interlayer insulating film, and electrically connected to the first contact electrode; a wiring pattern embedded in a third interlayer insulating film positioned in an upper layer of the second interlayer insulating film, and electrically connected to the third contact electrode; and a fourth contact electrode embedded in at least the second and third interlayer insulating films, and electrically connected to the second contact electrode, wherein side surfaces of the wiring pattern along an extending direction of the wiring pattern coincide with side surfaces of the third contact electrode along an extending direction of the wiring pattern.
    Type: Application
    Filed: July 6, 2009
    Publication date: January 7, 2010
    Applicant: Elpida Memory, Inc.
    Inventor: Noriaki MIKASA
  • Publication number: 20100001249
    Abstract: A semiconductor device includes a plurality of MOS transistors and wiring connected to a source electrode or a drain electrode of the plurality of MOS transistors and, the wiring being provided in the same layer as the source electrode and the drain electrode in a substrate, or in a position deeper than a surface of the substrate.
    Type: Application
    Filed: July 1, 2009
    Publication date: January 7, 2010
    Inventor: Hiroyuki Uchiyama
  • Patent number: 7642590
    Abstract: A method for forming a semiconductor device is provided. The method comprises providing a substrate with recessed gates and deep trench capacitor devices therein. Protrusions of the recessed gates and upper portions of the deep trench capacitor devices are revealed. Spacers are formed on sidewalls of the upper portions and the protrusions. Buried portions of conductive material are formed in spaces between the spacers. The substrate, the spacers and the buried portions are patterned to form parallel shallow trenches for defining buried bit line contacts and capacitor buried surface straps. A layer of dielectric material is formed in the shallow trenches. Word lines are formed across the recessed gates. Bit lines are formed to electrically connect the buried bit line contacts without crossing the capacitor buried surface straps, and stack capacitors are formed to electrically connect with the capacitor buried surface straps. A semiconductor device is also provided.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: January 5, 2010
    Assignee: Nanya Technology Corporation
    Inventor: Pei-Ing Lee
  • Patent number: 7642591
    Abstract: A capacitor for use in integrated circuits comprises a layer of conductive material. The layer of conductive material including at least a first portion and a second portion, wherein the first portion and the second portion are arranged in a predetermined pattern relative to one another to provide a maximum amount of capacitance per semiconductor die area.
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: January 5, 2010
    Assignee: Micron Technology, Inc.
    Inventors: R. Jacob Baker, Kurt D. Beigel
  • Patent number: 7638830
    Abstract: An MIM capacitor structure having a metal structure formed thereover is provided. A dielectric layer is disposed over the metal structure and a top layer is disposed over the dielectric layer. A capacitance trench is formed through the top layer and into the dielectric layer. Respective bottom electrodes are formed over the opposing side walls of the capacitance trench. A capacitance dielectric layer is disposed over the respective bottom electrodes, the bottom of the capacitance trench and the remaining top layer. Respective opposing initial via openings are formed adjacent the capacitance trench. Respective trench openings are formed above, continuous and contiguous with the lower portions of the respective opposing initial via openings and exposing portions of the underlying metal structure to form respective opposing dual damascene openings. Planarized metal portions disposed within the dual damascene openings and the capacitance trench form a top electrode.
    Type: Grant
    Filed: August 16, 2006
    Date of Patent: December 29, 2009
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Ping-Yi Hsin, Zan-Chun Wei
  • Patent number: 7638389
    Abstract: A semiconductor device capacitor fabrication method that is capable of enabling the simultaneous use of an oxide capacitor and a PIP capacitor of a semiconductor device depending upon whether metal line terminals are used. The semiconductor device capacitor fabrication method can include forming an active region and a first gate electrode over a semiconductor substrate, partially depositing a silicon nitride layer, over which a capacitor will be formed, over the first gate electrode, forming a second gate electrode over the silicon nitride, sequentially forming a first insulation layer and a second insulation layer over the resultant structure and forming line terminals extending through the first insulating layer and the second insulating layer for a transistor and a capacitor.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: December 29, 2009
    Assignee: Dongbu HiTek Co., Ltd.
    Inventor: Jung-Ho Ahn
  • Patent number: 7635887
    Abstract: An integrated circuit arrangement includes an undulating capacitor in a conductive structure layer. The surface area of the capacitor is enlarged in comparison with an even capacitor. The capacitor is interlinked with dielectric regions at its top side and/or its underside, so that it can be produced by methods which may not have to be altered in comparison with conventional CMP methods.
    Type: Grant
    Filed: August 11, 2006
    Date of Patent: December 22, 2009
    Assignee: Infineon Technologies AG
    Inventor: Anton Steltenpohl
  • Patent number: 7633118
    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: May 31, 2007
    Date of Patent: December 15, 2009
    Assignee: Agere Systems Inc.
    Inventors: Samir Chaudhry, Paul Arthur Layman, John Russell McMacken, J. Ross Thomson, Jack Qingsheng Zhao
  • Publication number: 20090302362
    Abstract: A lower electrode film, a ferroelectric film, and an upper electrode film are formed on an insulation film covering a transistor formed on a semiconductor substrate. Furthermore, a Pt film is formed as a cap layer on the upper electrode film. Then, a hard mask (a TiN film and an SiO2 film) of a predetermined pattern is formed on the Pt film, and the Pt film and the upper electrode film are etched. Then, an insulating protective film is formed on an entire surface, and a side surface of the upper electrode film is covered with the insulating protective film. Next, the ferroelectric film and the lower electrode film are etched, thus forming a ferroelectric capacitor.
    Type: Application
    Filed: August 14, 2009
    Publication date: December 10, 2009
    Applicant: FUJITSU MICROELECTRONICS LIMITED
    Inventors: Hideaki Kikuchi, Kouichi Nagai
  • Patent number: 7629636
    Abstract: When adopting a stack-type capacitor structure for a ferroelectric capacitor structure (30), an interlayer insulating film (27) is formed between a lower electrode (39) (or a barrier conductive film) and a conductive plug (22) to eliminate an impact of orientation/level difference on a surface of the conductive plug (22) onto the ferroelectric film (40). Differently from a conductive film like the lower electrode (39) or the barrier conductive film, the interlayer insulating film (27) can be formed without inheriting the orientation/level difference from its lower layers by planarizing the surface thereof.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: December 8, 2009
    Assignee: Fujitsu Microelectronics Limited
    Inventor: Kouichi Nagai
  • Patent number: 7629221
    Abstract: Disclosed is a method for forming a capacitor of a semiconductor device. In such a method, a mold insulating layer is formed on an insulating interlayer provided with a storage node plug, and the mold insulating layer is etched to form a hole through which the storage node plug is exposed. Next, a metal storage electrode with an interposed WN layer is formed on a hole surface including the exposed storage node plug and the mold insulating layer is removed. Finally, a dielectric layer and a plate electrode are formed in order on the metal storage electrode.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: December 8, 2009
    Assignee: Hynix Semiconductor Inc.
    Inventors: Ki Seon Park, Jae Sung Roh, Hyun Chul Sohn
  • Publication number: 20090294820
    Abstract: Semiconductor devices, capacitors, and methods of manufacture thereof are disclosed. In one embodiment, a method of fabricating a capacitor includes forming a first material over a workpiece, and patterning the first material, forming a first capacitor plate in a first region of the workpiece and forming a first element in a second region of the workpiece. A second material is formed over the workpiece and over the patterned first material. The second material is patterned, forming a capacitor dielectric and a second capacitor plate in the first region of the workpiece over the first capacitor plate and forming a second element in a third region of the workpiece.
    Type: Application
    Filed: May 27, 2008
    Publication date: December 3, 2009
    Inventors: Martin Ostermayr, Richard Lindsay
  • Publication number: 20090289292
    Abstract: A semiconductor device that is capable of preventing a storage node bunker defect or a defect due to loss of a barrier layer, and a method for forming a capacitor thereof. The semiconductor memory device includes a contact hole formed in an interlayer dielectric layer on a semiconductor substrate; a barrier layer formed on the bottom of the contact hole; a first storage node contact formed of a conductive layer that fills the rest of the contact hole; a second storage node contact formed on the result formed with the first storage node contact so as to be shifted by a given distance from the first storage node contact; an insulation layer formed between the second storage node contacts; a storage electrode connected with the second storage node contact and isolated on a per cell basis; and dielectric layer and plate electrode for covering the storage electrode.
    Type: Application
    Filed: December 22, 2008
    Publication date: November 26, 2009
    Applicant: HYNIX SEMICONDUCTOR INC.
    Inventor: Jong Bum Park
  • Patent number: 7619298
    Abstract: A method and apparatus for reducing parasitic capacitance. A P-well blocked layer is formed directly beneath a parasitic device. The P-well blocked layer significantly increases the resistance underneath the parasitic device. The resistance of the P-well blocked layer, in effect, partially disconnects the parasitic device from the ground terminal to minimize the effective capacitive impedance that is added to the total termination impedance.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: November 17, 2009
    Assignee: Xilinx, Inc.
    Inventors: Firas N. Abughazaleh, Brian T. Brunn
  • Patent number: 7615814
    Abstract: A semiconductor memory device includes: a first conductive layer; a second conductive layer; a first insulating film; a first plug; a second plug; a second insulating film having a first opening and a second opening; a first metal film; a second metal film; a first capacitor insulating film formed on the first metal film; a second capacitor insulating film formed on the second metal film; and a third metal film. The second metal film is formed so that an end thereof located away from the first opening extends onto the top surface of the second insulating film. The second metal film is connected at its extending portion to the third metal film.
    Type: Grant
    Filed: February 6, 2007
    Date of Patent: November 10, 2009
    Assignee: Panasonic Corporation
    Inventors: Atsushi Noma, Toyoji Ito
  • Patent number: 7612400
    Abstract: An MIM device includes a lower electrode of a metal nitride film, a hysteresis film of an oxide film containing Nb formed on the lower electrode, and an upper electrode of a metal nitride film formed on the hysteresis film.
    Type: Grant
    Filed: November 26, 2007
    Date of Patent: November 3, 2009
    Assignee: Fujitsu Limited
    Inventors: Teruo Kurahashi, Hideharu Shido, Kenji Ishikawa, Takeo Nagata, Yasuyoshi Mishima, Yukie Sakita
  • Patent number: 7608881
    Abstract: A thin-film device comprises: a substrate; a flattening film made of an insulating material and disposed on the substrate; and a capacitor provided on the flattening film. The capacitor incorporates: a lower conductor layer disposed on the flattening film; a dielectric film disposed on the lower conductor layer; and an upper conductor layer disposed on the dielectric film. The thickness of the dielectric film falls within a range of 0.02 to 1 ?m inclusive and is smaller than the thickness of the lower conductor layer. The surface roughness in maximum height of the top surface of the flattening film is smaller than that of the top surface of the substrate and equal to or smaller than the thickness of the dielectric film. The surface roughness in maximum height of the top surface of the lower conductor layer is equal to or smaller than the thickness of the dielectric film.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: October 27, 2009
    Assignee: TDK Corporation
    Inventors: Hajime Kuwajima, Masahiro Miyazaki, Akira Furuya
  • Patent number: 7608517
    Abstract: Disclosed is a method for forming a capacitor of a semiconductor device, which can secure wanted charging capacity and also improve leakage current characteristics. The method comprises the steps of: forming a storage electrode on a semiconductor substrate; forming a dielectric layer formed of Ti(1-x)TbxO on the storage electrode; and forming a plate electrode on the dielectric layer formed of Ti(1-x)TbxO.
    Type: Grant
    Filed: May 4, 2005
    Date of Patent: October 27, 2009
    Assignee: Hynix Semiconductor Inc.
    Inventor: Kee Jeung Lee
  • Patent number: 7608503
    Abstract: A method of forming a memory cell comprises forming a stack comprising a first electrode, an insulating layer over the first electrode, and a second electrode over the insulating layer, with a side wall on the stack. A side wall spacer comprising a programmable resistive material in electrical communication with the first and second electrodes is formed. The side wall spacer is formed by depositing a layer of programmable resistive material over the side wall of the stack, anisotropically etching the layer of programmable resistive material to remove it in areas away from the side wall, and selectively etching the programmable resistive material according to a pattern to define the width of the side wall spacer. In embodiments described herein, the width is about 40 nanometers or less.
    Type: Grant
    Filed: November 21, 2005
    Date of Patent: October 27, 2009
    Assignee: Macronix International Co., Ltd.
    Inventors: Hsiang Lan Lung, Shih-Hung Chen, Yi-Chou Chen
  • Patent number: 7605037
    Abstract: The present invention provides an integrated semiconductor memory device comprising: a semiconductor substrate; a plurality of active area lines formed in said semiconductor substrate, each of which active area lines includes a plurality of memory cell selection transistors having a respective wordline contact, bitline contact, and node contact; a plurality of filled insulation trenches arranged between said active area lines; a plurality of rewiring stripes each of which rewires an associated node contact of a memory cell selection transistor from an active area line to above a neighboring filled insulation trench so as to form a respective rewired node contact; a plurality of bitlines being aligned with and running above said active area lines which bitlines are connected to the bitline contacts of the memory cell selection transistors of the respective active area lines; a plurality of wordlines running perpendicular to said bitlines which are connected to the wordline contacts of the memory cell selection
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: October 20, 2009
    Assignee: Qimonda AG
    Inventor: Rolf Weis
  • Patent number: 7601585
    Abstract: In pattern-forming ferroelectric capacitor structures by a one mask etching, after an Ir film to be a lower electrode film is formed, an AlOx film to be an oxide reduction film reducing an Ir oxide which is formed on a surface layer of the lower electric film is deposited on the lower electrode film, and then this oxide reduction film is removed by, for example, a dilute hydrofluoric acid treatment.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: October 13, 2009
    Assignee: Fujitsu Microelectronics Limited
    Inventor: Katsuyoshi Matsuura
  • Patent number: 7595525
    Abstract: A capacitor (100) is disclosed that is formed as part of an integrated circuit (IC) fabrication process. The capacitor (100) has conductive top and bottom electrodes (140, 144) and a nonconductive capacitor dielectric (142). In one example, the dielectric (142) includes first and second thin dielectric layers (112, 114) that sandwich a layer of antireflective material (118). The thin layers (112, 114) provide the dielectric behavior necessary for the capacitor while the antireflective layer (118) promotes reduced feature sizes by mitigating reflected standing waves, among other things.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: September 29, 2009
    Assignee: Texas Instruments Incorporated
    Inventors: Bill Alan Wofford, Blake Ryan Pasker, Xinfen Chen, Binghua Hu
  • Patent number: 7595526
    Abstract: A method for manufacturing a capacitor in a semiconductor device for securing capacitance without a merging phenomenon during a MPS grain growth process. The manufacturing step begins with a preparation of a substrate. The interlayer dielectric (ILD) layer is formed on the substrate and is etched to form conductive plug. Then, an etch barrier layer and a sacrifice insulating layer are formed on entire surface subsequently. A cylinder typed first electrode is formed over the conductive plug using the sacrifice insulating layer. Thereafter, first meta-stable poly silicon (MPS) grains are formed on inner wall of the first electrode except a bottom region thereof. However, second MPS grains with small sizes can be formed in the bottom region for increasing a storage area of the first electrode. Finally, a dielectric layer and a second electrode are formed on the first electrode subsequently.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: September 29, 2009
    Assignee: Hynix Semiconductor Inc.
    Inventors: Dong-Woo Shin, Hyung-Bok Choi
  • Patent number: 7592657
    Abstract: According to the present invention, a method of fabricating a semiconductor device is provided including forming a first interlayer insulating film 11, a crystalline conductive film 21, a first conductive film 23, a ferroelectric film 24 and a second conductive film 25 on a silicon substrate 1 in sequence, forming a conductive cover film 18 on the second conductive film 25, forming a hard mask 26a on the conductive cover film 18, forming a capacitor upon etching the conductive cover film 18, the second conductive film 25, the ferroelectric film 24 and the first conductive film 23 using the hard mask 26a as an etching mask in areas exposed from the hard mask 26a, and etching the hard mask 26a and the crystalline conductive film 21 exposed from the lower electrode 23a using an etching condition under which the hard mask 26a is etched.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: September 22, 2009
    Assignee: Fujitsu Microelectronics Limited
    Inventor: Wensheng Wang
  • Patent number: 7592626
    Abstract: A capacitor comprises: a lower electrode formed of a foil made of a polycrystalline metal; an upper conductor layer; and a dielectric layer disposed between the lower electrode and the upper electrode layer. Grain boundaries of the polycrystalline metal appear at the top surface of the lower electrode. The capacitor further comprises an insulator that is disposed between the top surface of the dielectric layer and the bottom surface of the upper electrode layer and that is present only in part of a region in which the top surface of the dielectric layer and the bottom surface of the upper electrode layer face each other. The insulator is disposed to cover at least part of the grain boundaries appearing at the top surface of the lower electrode when seen from above the top surface of the dielectric layer. The insulator is formed by electrophoresis.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: September 22, 2009
    Assignee: TDK Corporation
    Inventors: Yumiko Ozaki, Osamu Shinoura
  • Patent number: 7592660
    Abstract: There is provided a semiconductor device which includes a base insulating film formed on a semiconductor substrate, a capacitor formed on the base insulating film, an interlayer insulating film covering the capacitor, a first layer metal wiring formed on the interlayer insulating film, a single-layer first insulating film which covers the interlayer insulating film and the first layer metal wiring and has a first film thickness above the first layer metal wiring, a first capacitor protective insulating film formed on the first insulating film, a first cover insulating film which is formed on the first capacitor protective insulating film and has a second film thickness thicker than the first film thickness, above the first layer metal wiring, a third hole formed in the insulating films on the first layer metal wiring, and a fifth conductive plug formed in the third hole.
    Type: Grant
    Filed: June 2, 2008
    Date of Patent: September 22, 2009
    Assignee: Fujitsu Microelectronics Limited
    Inventors: Kouichi Nagai, Wensheng Wang
  • Patent number: 7589373
    Abstract: The present invention provides a semiconductor device, which includes a substrate and a sensing memory device. The substrate includes a metal-oxide-semiconductor transistor having a gate. The sensing memory device is disposed on the gate of the metal-oxide-semiconductor transistor and includes followings. The second conductive layer is covering the first conductive layer. The charge trapping layer is disposed between the first conductive layer and the second conductive layer, wherein the first conductive layer has a sensing region therein when charges stored in the charge trapping layer, and the sensing region is adjacent to the charge trapping layer. The first dielectric layer and the second dielectric layer are respectively disposed between the charge trapping layer and the first conductive layer and between the charge trapping layer and the second conductive layer, wherein a third dielectric layer is disposed between the gate and the sensing memory device.
    Type: Grant
    Filed: January 13, 2009
    Date of Patent: September 15, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Cha-Hsin Lin, Lurng-Shehng Lee
  • Patent number: 7589370
    Abstract: An integrated MIS capacitor structure has a bottom electrode, a capacitor dielectric overlying the bottom electrode, and a plurality of capacitor top plates overlying the capacitor dielectric. In one form each capacitor top plate has a principal dimension and a lesser dimension, wherein individual capacitor top plates of the plurality are arranged proximate and adjacent to one another in an array along respective principal dimensions thereof. The bottom electrode is shared among the plurality of capacitor top plates. At least one of a plurality of conductive stripes is positioned on opposite sides of each capacitor top plate along the principal dimension of a respective capacitor top plate. The structure also has a grounded top metal layer and an inter-level dielectric. An external ground via is disposed adjacent at least one side edge of the plurality of capacitor top plates.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: September 15, 2009
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Daniel J. Lamey, Xiaowei Ren
  • Patent number: 7586142
    Abstract: A semiconductor device having a metal-insulator-metal (MIM) capacitor is provided and can include a lower line formed in a semiconductor substrate; a first interlayer insulating layer formed over the semiconductor substrate, the first interlayer insulating layer having a first conductor and a second conductor electrically connected to the lower line; a second interlayer insulating layer formed over the first interlayer insulating layer, the second interlayer insulating layer including a first via hole and a second via hole connected to the first conductor and the second conductor, respectively; a lower electrode line formed in the first via hole, the lower electrode including a first barrier metal layer, a second barrier metal layer, a second copper seed layer, and a copper layer; and a capacitor formed in the second via hole, the capacitor including the first barrier metal layer, a dielectric layer, the second barrier metal layer and the second copper seed layer.
    Type: Grant
    Filed: November 23, 2007
    Date of Patent: September 8, 2009
    Assignee: Dongbu HiTek Co., Ltd.
    Inventor: Sung-Ho Kwak
  • Patent number: 7586141
    Abstract: A semiconductor device including a semiconductor substrate having a logic formation region in which a memory device is formed and a logic formation region in which a logic device is formed; a first impurity region formed in an upper surface of said semiconductor substrate in the logic formation region; a second impurity region formed in an upper surface of the semiconductor substrate in said logic formation region; a third impurity region formed in an upper surface of the first impurity region and having a conductivity type different from that of the second impurity region; a fourth region formed in an upper surface of the second impurity region and having a conductivity type different from that of the second impurity region; a first silicide film formed in an upper surface of the third impurity region; a capacitor formed above the first silicide film and electrically connected to the first silicide film; and a second silicide film formed in an upper surface of the fourth impurity region and having a larger t
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: September 8, 2009
    Assignee: Renesas Technology Corp.
    Inventor: Hiroki Shinkawata
  • Patent number: 7582525
    Abstract: A method for fabricating a semiconductor device is provided. The method includes: forming an inter-layer insulation layer on a substrate; forming storage node contact plugs penetrating into the inter-layer insulation layer; forming a stack structure formed by stacking a first protective barrier layer and a sacrificial layer on the inter-layer insulation layer; performing an etching process to the first protective barrier layer and the sacrificial layer in a manner to have a trenches opening upper portions of the storage node contact plugs; forming storage nodes having a cylinder type inside of the trenches; forming a second protective barrier layer filling the inside of the storage nodes having the cylinder type; removing the sacrificial layer through performing a wet dip-out process; removing the first protective barrier layer and the second protective barrier layer; and sequentially forming a dielectric layer and a plate node on the storage nodes.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: September 1, 2009
    Assignee: Hynix Semiconductor Inc.
    Inventors: Keun-Kyu Kong, Jae-Chang Jung
  • Patent number: 7582925
    Abstract: An integrated circuit device may include a substrate, a plurality of storage electrode landing pads on the substrate, and a plurality of storage electrodes. Each of the plurality of storage electrodes may be on a portion of a respective one of the plurality of storage electrode landing pads. In addition, an insulating support layer may be on the substrate, on portions of the storage electrode landing pads that are free of the storage electrodes, and on portions of sidewalls of storage electrodes. Moreover, portions of sidewalls of the storage electrodes may be free of the insulating support layer. Related methods and structures are also discussed.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: September 1, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung-ok Jung, Il-young Moon
  • Publication number: 20090212338
    Abstract: Some embodiments include methods of forming semiconductor constructions. Oxide is formed over a substrate, and first material is formed over the oxide. Second material is formed over the first material. The second material may be one or both of polycrystalline and amorphous silicon. A third material is formed over the second material. A pattern is transferred through the first material, second material, third material, and oxide to form openings. Capacitors may be formed within the openings. Some embodiments include semiconductor constructions in which an oxide is over a substrate, a first material is over the oxide, and a second material containing one or both of polycrystalline and amorphous silicon is over the first material. Third, fourth and fifth materials are over the second material. An opening may extend through the oxide; and through the first, second, third, fourth and fifth materials.
    Type: Application
    Filed: February 26, 2008
    Publication date: August 27, 2009
    Inventor: Russell A. Benson
  • Patent number: 7579643
    Abstract: A capacitor may include a first electrode, a second electrode, a low dielectric layer, and/or a high dielectric layer. The first electrode may include at least one first electrode branch. The second electrode may face the first electrode and include at least one second electrode branch. The low dielectric layer may be formed between the first electrode branch and the second electrode branch. The high dielectric layer may be formed between the first electrode branch and the second electrode branch. The high dielectric layer may have a higher dielectric constant than the low dielectric layer.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: August 25, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Byung-jun Oh, Kyung-tae Lee, Yoon-hae Kim
  • Publication number: 20090207649
    Abstract: A vertical transistor having a wrap-around-gate and a method of fabricating such a transistor. The wrap-around-gate (WAG) vertical transistors are fabricated by a process in which source, drain and channel regions of the transistor are automatically defined and aligned by the fabrication process, without photolithographic patterning.
    Type: Application
    Filed: April 2, 2009
    Publication date: August 20, 2009
    Inventors: Sanh D. Tang, Robert J. Burke, Anand Srinivasan
  • Publication number: 20090207681
    Abstract: Disclosed are methods, systems and devices, including a device having a fin field-effect transistor with a first terminal, a second terminal, and two gates. In some embodiments, the device includes a local data line connected to the first terminal, at least a portion of a capacitor plate connected to the second terminal, and a global data line connected to the local data line by the capacitor plate.
    Type: Application
    Filed: February 19, 2008
    Publication date: August 20, 2009
    Applicant: MICRON TECHNOLOGY, INC.
    Inventor: Werner Juengling
  • Patent number: 7576383
    Abstract: A capacitor is made by forming a buffer oxide layer, an etching stop layer, and a mold insulation layer over a semiconductor substrate having a storage node contact plug. The mold insulation layer and the etching stop layer are etched to form a hole in an upper portion of the storage node contact plug. A tapering layer is deposited over the mold insulation layer including the hole. The tapering layer and the buffer oxide layer are etched back so that the tapering layer is remained only at the upper end portion of the etched hole. A metal storage node layer formed on the etched hole over the remaining tapering layer. The mold insulation layer and the remaining tapering layer are removed to form a cylindrical storage node having a tapered upper end. A dielectric layer and a plate node are formed over the storage node.
    Type: Grant
    Filed: July 17, 2007
    Date of Patent: August 18, 2009
    Assignee: Hynix Semiconductor Inc.
    Inventors: Ho Jin Cho, Cheol Hwan Park, Jae Soo Kim, Dong Kyun Lee
  • Patent number: 7575971
    Abstract: According to some embodiments, a capacitor includes a storage conductive pattern, a storage electrode having a complementary member enclosing a storage conductive pattern so as to complement an etch loss of the storage electrode, a dielectric layer disposed on the storage electrode, and a plate electrode disposed on the dielectric layer. Because the complementary member compensates for the etch loss of the storage electrode during several etching processes, the deterioration of the structural stability of the storage electrode may be prevented. Additionally, because the complementary member is formed on an upper portion of the storage electrode, the storage electrode may have a sufficient thickness to enhance the electrical characteristics of the capacitor that includes the storage electrode.
    Type: Grant
    Filed: August 11, 2006
    Date of Patent: August 18, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Je-Min Park, Jin-Jun Park
  • Patent number: 7576382
    Abstract: A method of providing shield interconnection, the method shielding an interconnection pattern to be shielded with shield interconnection patterns for shielding on the substrate of a semiconductor integrated device, is disclosed. The method includes the steps of disposing multiple interconnection layers having the corresponding shield interconnection patterns formed therein so that the interconnection layers surround the interconnection pattern to be shielded; setting different potentials for at least a first one of the shield interconnection patterns formed in a first one of the interconnection layers and a second one of the shield interconnection patterns formed in a second one of the interconnection layers; and shielding the interconnection pattern to be shielded with the first one and the second one of the shield interconnection patterns.
    Type: Grant
    Filed: February 1, 2006
    Date of Patent: August 18, 2009
    Assignee: Ricoh Company, Ltd.
    Inventor: Tsuyoshi Ueno