With Means For Preventing Charge Leakage Due To Minority Carrier Generation (e.g., Alpha Generated Soft Error Protection Or "dark Current" Leakage Protection) Patents (Class 257/297)
  • Patent number: 7569915
    Abstract: A shielding arrangement for protecting a circuit containing magnetically sensitive materials from external stray magnetic fields. A shield of a material having a relatively high permeability is formed over the magnetically sensitive materials using thin film deposition techniques. Alternatively, a planar shield is affixed directly to a surface of semiconductor die containing an integrated circuit structure.
    Type: Grant
    Filed: June 26, 2006
    Date of Patent: August 4, 2009
    Assignee: Micron Technology, Inc.
    Inventors: Richard K. Spielberger, Romney R. Katti
  • Publication number: 20090189209
    Abstract: In a full CMOS SRAM having a lateral type cell (memory cell having three partitioned wells arranged side by side in a word line extending direction and longer in the word line direction than in the bit line direction) including first and second driver MOS transistors, first and second load MOS transistors and first and second access MOS transistors, two capacitors are arranged spaced apart from each other on embedded interconnections to be storage nodes, with lower and upper cell plates cross-coupled to each other.
    Type: Application
    Filed: March 2, 2009
    Publication date: July 30, 2009
    Applicant: RENESAS TECHNOLOGY CORP.
    Inventor: Takahiro YOKOYAMA
  • Publication number: 20090166700
    Abstract: A semiconductor fabrication method includes forming a semiconductor structure including source/drain regions disposed on either side of a channel body wherein the source/drain regions include a first semiconductor material and wherein the channel body includes a migration barrier of a second semiconductor material. A gate dielectric overlies the semiconductor structure and a gate module overlies the gate dielectric. An offset in the majority carrier potential energy level between the first and second semiconductor materials creates a potential well for majority carriers in the channel body. The migration barrier may be a layer of the second semiconductor material over a first layer of the first semiconductor material and under a capping layer of the first semiconductor material. In a one dimensional migration barrier, the migration barrier extends laterally through the source/drain regions while, in a two dimensional barrier, the barrier terminates laterally at boundaries defined by the gate module.
    Type: Application
    Filed: March 5, 2009
    Publication date: July 2, 2009
    Applicant: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Marius K. ORLOWSKI, James D. BURNETT
  • Patent number: 7531861
    Abstract: Trench capacitors that have insulating layer collars in undercut regions and methods of fabricating such trench capacitors are provided. Some methods of fabricating a trench capacitor include forming a first layer on a substrate. A second layer is formed on the first layer opposite to the substrate. A mask is formed that has an opening on top of the first and second layers. A first trench is formed by removing a portion of the first and second layers through the opening in the mask. A portion of the first layer under the second layer is removed to form an undercut region under the second layer. An insulating layer collar is formed in the undercut region under the second layer. A second trench is formed that extends from the first trench by removing a portion of the substrate through the opening in the mask. A buried plate is formed in the substrate along the second trench. A dielectric layer is formed on an inner wall and bottom of the second trench.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: May 12, 2009
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Suk-jin Chung, Seung-hwan Lee, Sung-tae Kim, Young-sun Kim, Jae-soon Lim, Young-geun Park
  • Patent number: 7528468
    Abstract: A capacitor assembly (82) is formed on a substrate (20). The capacitor assembly a first conductive plate (38) and a second conductive plate (60) formed over the substrate such that the second conductive plate is separated from the first conductive plate by a distance. A conductive trace (40) is formed over the substrate that is connected to the first conductive plate and extends away from the capacitor assembly. A conductive shield (62) is formed over at least a portion of the conductive trace that is separated from the first and second conductive plates to control a fringe capacitance between the second conductive plate and the conductive trace.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: May 5, 2009
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Andrew C. McNeil, Dubravka Bilic, Stephen R. Hooper
  • Patent number: 7514737
    Abstract: In a full CMOS SRAM having a lateral type cell (memory cell having three partitioned wells arranged side by side in a word line extending direction and longer in the word line direction than in the bit line direction) including first and second driver MOS transistors, first and second load MOS transistors and first and second access MOS transistors, two capacitors are arranged spaced apart from each other on embedded interconnections to be storage nodes, with lower and upper cell plates cross-coupled to each other.
    Type: Grant
    Filed: May 1, 2006
    Date of Patent: April 7, 2009
    Assignee: Renesas Technology Corp.
    Inventor: Takahiro Yokoyama
  • Publication number: 20090085082
    Abstract: Controlled deposition of HfO2 and ZrO2 dielectrics is generally described. In one example, a microelectronic apparatus includes a substrate and a dielectric film coupled with the substrate, the dielectric film including ZrO2 and HfO2 wherein the ratio of Zr to Hf in the dielectric film is about 5 to 10 atoms of Zr for every 1 atom of Hf to reduce ToxE or reduce Jox of the dielectric film.
    Type: Application
    Filed: September 27, 2007
    Publication date: April 2, 2009
    Inventors: Gilbert Dewey, Matthew Metz, Jack Kavalieros, Robert Chau
  • Publication number: 20090085083
    Abstract: Provided may be a semiconductor memory device and a method of forming the semiconductor memory device. The memory device of example embodiments may include a bit line structure including a bit line on a semiconductor substrate, and a buried contact plug structure including a buried contact pad and a buried contact plug that extends in a lower portion of the bit line from one side of the bit line and connected to the buried contact pad. A width of the buried contact plug near a top surface of the buried contact pad may be greater than a width of the buried contact plug adjacent to the bit line.
    Type: Application
    Filed: September 26, 2008
    Publication date: April 2, 2009
    Inventor: Kyoung-Sub Shin
  • Patent number: 7509541
    Abstract: A computer apparatus includes a first integrated circuit (IC) and a second IC. The second IC includes a soft error rate (SER) immune component and a SER component to detect radiation that could result in soft errors at logic at the first IC.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: March 24, 2009
    Assignee: Intel Corporation
    Inventor: Ronald K. Minemier
  • Publication number: 20090050950
    Abstract: A semiconductor device includes a first MOS type capacitor having a first insulating film and a first electrode that are formed on a semiconductor substrate, and a second MOS type capacitor having a second insulating film and a second electrode that are formed on the semiconductor substrate. The first electrode has a first concentration difference as a difference when an impurity concentration in an interface region with the first insulating film is subtracted from an impurity concentration in a top portion of the first electrode. The second electrode has a second concentration difference as a difference when an impurity concentration in an interface region with the second insulating film is subtracted from an impurity concentration in a top portion of the second electrode. The second concentration difference is larger than the first concentration difference.
    Type: Application
    Filed: July 14, 2008
    Publication date: February 26, 2009
    Inventor: Yoshiyuki SHIBATA
  • Patent number: 7485915
    Abstract: A semiconductor device includes a capacitor which includes a capacitor insulating film at least including a first insulating film and a ferroelectric film formed in contact with the first insulating film, containing a compound of a preset metal element and a constituent element of the first insulating film as a main component and having a dielectric constant larger than that of the first insulating film, a first capacitor electrode formed of one of Cu and a material containing Cu as a main component, and a second capacitor electrode formed to sandwich the capacitor insulating film in cooperation with the first capacitor electrode.
    Type: Grant
    Filed: May 5, 2006
    Date of Patent: February 3, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hayato Nasu, Takamasa Usui, Hideki Shibata
  • Patent number: 7482211
    Abstract: A method for forming a semiconductor device is provided. The method includes providing a semiconductor substrate, forming a gate dielectric over the semiconductor substrate, forming a gate electrode on the gate dielectric, forming a stressor in the semiconductor substrate adjacent an edge of the gate electrode, and implanting an impurity after the step of forming the stressor. The impurity is preferably selected from the group consisting essentially of group IV elements, inert elements, and combinations thereof.
    Type: Grant
    Filed: September 19, 2006
    Date of Patent: January 27, 2009
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chun-Feng Nieh, Chien-Hao Chen, Keh-Chiang Ku, Tze-Liang Lee, Shih-Chang Chen
  • Patent number: 7479690
    Abstract: Strip metallic thin films each having a width of 180 ?m or so are disposed in parallel at intervals of 10 ?m to 50 ?m on the surface of a protection layer formed on the silicon substrate and at their corresponding spots located on the upper side of an analog circuit formed in a silicon substrate. These strip metallic thin films are connected to one another at their ends or centers to form a comb-like shield section and one end thereof is connected to its corresponding external connecting post. Incidentally, the shield section is formed by copper plating in the same process as redistribution wirings that connect electrode pads at an outer peripheral portion of the silicon substrate to their corresponding external connecting posts.
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: January 20, 2009
    Assignee: Oki Electric Industry Co., Ltd.
    Inventor: Yasushi Shiraishi
  • Patent number: 7468297
    Abstract: A method of manufacturing semiconductor device comprising forms a first impurity diffusion region as a lower electrode of a capacitor in a first area of a semiconductor substrate by implanting impurities at a first dose; forms a second impurity diffusion region in a second area, at the end part of the semiconductor substrate, by implanting impurities at a second dose; and forms, by a thermal oxidation method, a capacitor insulation film having a first thickness on the first impurity diffusion region and forms an oxide film having a second thickness which is thicker than the first thickness on the second area.
    Type: Grant
    Filed: April 6, 2005
    Date of Patent: December 23, 2008
    Assignee: Fujitsu Limited
    Inventors: Toshiro Futatsugi, Naoto Horiguchi, Ken-ichi Okabe, Kenichi Hikazutani
  • Patent number: 7459741
    Abstract: A semiconductor memory device excellent in data holding characteristics even when a cell area is reduced is disclosed. According to one aspect of the present invention, a semiconductor memory device comprises a transistor including a source, a drain and a channel region disposed in a semiconductor substrate, and including a gate electrode disposed through a gate insulator on a surface of the semiconductor substrate of the channel region, a capacitor connected to the channel region, a first wiring line electrically connected to the gate electrode, and a second wiring line electrically connected to the drain.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: December 2, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masaru Kidoh, Hideaki Aochi, Ryota Katsumata, Masaru Kito
  • 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
  • Publication number: 20080251825
    Abstract: A pillar-type field effect transistor having low leakage current is provided. The pillar-type field effect transistor includes a semiconductor pillar, a gate insulating layer formed on a portion of a surface of the semiconductor pillar, a gate electrode formed on the gate insulating layer, and source/drain regions formed on portions of the semiconductor pillar where the gate electrode is not formed, in which the gate electrode includes a first gate electrode, a second gate electrode, and an inter-gate insulating layer, in which the first gate electrode has a work function higher than that of the second gate electrode, in which the inter-gate insulating layer is formed between the first gate electrode and the second gate electrode, and in which the first gate electrode and the second gate electrode are electrically connected by a contact or a metal interconnection line. A portion of the second gate electrode having the work function lower than that of the first gate electrode is overlapped by the drain region.
    Type: Application
    Filed: April 10, 2008
    Publication date: October 16, 2008
    Applicant: KYUNGPOOK NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventor: Jong-Ho LEE
  • Publication number: 20080237647
    Abstract: Methods and systems for optimal decoupling capacitance in a dual-voltage power-island architecture. In low-voltage areas of the chip, accumulation capacitors of two different types are used for decoupling, depending on whether the capacitor is located in an area which is always-on or an area which is conditionally powered.
    Type: Application
    Filed: December 31, 2007
    Publication date: October 2, 2008
    Applicant: San Disk Corporation
    Inventors: Brian Cheung, Emmanuel de Muizon
  • Patent number: 7414279
    Abstract: Semiconductor devices with an improved overlay margin and methods of manufacturing the same are provided. In one aspect, a method includes forming a buried bit line in a substrate; forming an isolation layer in the substrate to define an active region, the isolation layer being parallel to the bit line without overlapping the bit line; and forming a gate line including a gate pattern and a conductive line by forming the gate pattern in the active region and forming a conductive line that extends at a right angle to the bit line across the active region and is electrically connected to the gate pattern disposed thereunder. The gate pattern and the conductive line can be integrally formed.
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: August 19, 2008
    Assignee: Samsung Electronics, Co., Ltd.
    Inventor: Joon-Soo Park
  • Patent number: 7411238
    Abstract: In order to improve the soft error resistance of a memory cell of an SRAM without increasing its chip size in deep through-holes formed by perforating a silicon oxide film, there is a silicon nitride film and a silicon oxide film, a capacitor element having a TIN film serving as a lower electrode. This capacitor element is connected between a storage node and a supply voltage line, between a storage node and a reference voltage line, or between storage nodes of the memory cell of the SRAM.
    Type: Grant
    Filed: October 23, 2006
    Date of Patent: August 12, 2008
    Assignee: Renesas Technology Corp.
    Inventors: Akio Nishida, Hiraku Chakihara, Koichi Toba
  • Patent number: 7388274
    Abstract: Disclosed is a semiconductor structure that incorporates a capacitor for reducing the soft error rate of a device within the structure. The multi-layer semiconductor structure includes an insulator-filled deep trench isolation structure that is formed through an active silicon layer, a first insulator layer, and a first bulk layer and extends to a second insulator layer. The resulting isolated portion of the first bulk layer defines the first capacitor plate. A portion of the second insulator layer that is adjacent the first capacitor plate functions as the capacitor dielectric. Either the silicon substrate or a portion of a second bulk layer that is isolated by a third insulator layer and another deep trench isolation structure can function as the second capacitor plate. A first capacitor contact couples, either directly or via a wire array, the first capacitor plate to a circuit node of the device in order to increase the critical charge, Qcrit, of the circuit node.
    Type: Grant
    Filed: August 15, 2007
    Date of Patent: June 17, 2008
    Assignee: International Business Machines Corporation
    Inventors: John M. Aitken, Ethan H. Cannon, Philip J. Oldiges, Alvin W. Strong
  • Patent number: 7378739
    Abstract: A capacitor including a polysilicon layer doped with impurities to be conductive, a first dielectric layer formed on the polysilicon layer, a first conductive layer formed on the first dielectric layer, a second dielectric layer formed on the first conductive layer, and a second conductive layer formed on the first dielectric layer. The second conductive layer is coupled to the polysilicon layer.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: May 27, 2008
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Won-Kyu Kwak, Keum-Nam Kim
  • Patent number: 7375376
    Abstract: A semiconductor display device with an interlayer insulating film in which surface levelness is ensured with a limited film formation time, heat treatment for removing moisture does not take long, and moisture in the interlayer insulating film is prevented from escaping into a film or electrode adjacent to the interlayer insulating film. A TFT is formed and then a nitrogen-containing inorganic insulating film that transmits less moisture compared to organic resin film is formed so as to cover the TFT. Next, organic resin including photosensitive acrylic resin is applied and an opening is formed by partially exposing the organic resin film to light. The organic resin film where the opening is formed, is then covered with a nitrogen-containing inorganic insulating film which transmits less moisture than organic resin film does.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: May 20, 2008
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Satoshi Murakami, Masahiko Hayakawa, Kiyoshi Kato, Mitsuaki Osame, Takashi Hirosue, Saishi Fujikawa
  • Publication number: 20080099811
    Abstract: A single transistor floating-body dynamic random access memory (DRAM) device includes a floating body located on a semiconductor substrate and a gate electrode located on the floating body, the floating body including an excess carrier storage region. The DRAM device further includes source and drain regions respectively located at both sides of the gate electrode, and leakage shielding patterns located between the floating body and the source and drain regions. Each of the source and drain regions contact the floating body, which may be positioned between the source and drain regions. The floating body may also laterally extend under the leakage shielding patterns, which may be arranged at outer sides of the gate electrode.
    Type: Application
    Filed: July 27, 2007
    Publication date: May 1, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Nam-Kyun TAK, Ki-Whan SONG, Chang-Woo OH, Woo-Yeong CHO
  • Patent number: 7332390
    Abstract: A semiconductor memory device and fabrication method thereof. In a semiconductor memory device, each memory cell comprises a deep trench and a capacitor disposed on the lower portion thereof. A collar oxide layer having a first second sidewalls is disposed on the deep trench. The top of the first sidewall is at the same height as the surface of the semiconductor substrate. The top of the second sidewall is substantially equal to the top of the capacitor. The memory cell further comprises a buried conductor layer disposed on the second sidewall and the capacitor and a buried strap adjoining the buried conductive layer, and a transistor disposed on the surface of the semiconductor substrate and electrically connected to the capacitor through the buried strap and the buried conductive layer.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: February 19, 2008
    Assignee: Winbond Electronics Corp.
    Inventor: Wen-Yueh Jang
  • Patent number: 7326990
    Abstract: A semiconductor device includes a first hydrogen barrier film, a capacitor device formed on the first hydrogen barrier film, and a second hydrogen barrier film formed to cover the capacitor device. The first and second hydrogen barrier films each contain at least one common type of atoms for allowing the first and second hydrogen barrier films to adhere to each other.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: February 5, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takumi Mikawa, Yuji Judai, Toshie Kutsunai
  • Patent number: 7323708
    Abstract: A phase change memory device includes a lower electrode and a porous dielectric layer having fine pores on the lower electrode. A phase change layer is provided in the fine pores of the porous dielectric layer. An upper electrode is provided on the phase change layer. Related manufacturing methods are also described.
    Type: Grant
    Filed: April 19, 2004
    Date of Patent: January 29, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Se-Ho Lee, Young-Nam Hwang
  • Patent number: 7319254
    Abstract: A semiconductor device having resistors in a peripheral area and fabrication method thereof are provided. A mold layer is formed on a semiconductor substrate. The mold layer is patterned to form first molding holes and a second molding hole in the mold layer. A storage node layer is formed on the mold layer as well as in the first and second molding holes. The storage node layer is patterned to form storage nodes in the first molding holes and a portion of a resistor in the second hole.
    Type: Grant
    Filed: August 2, 2004
    Date of Patent: January 15, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-Hwa Kwak, Byung-Seo Kim
  • Patent number: 7315075
    Abstract: Disclosed is a semiconductor structure that incorporates a capacitor for reducing the soft error rate of a device within the structure. The multi-layer semiconductor structure includes an insulator-filled deep trench isolation structure that is formed through an active silicon layer, a first insulator layer, and a first bulk layer and extends to a second insulator layer. The resulting isolated portion of the first bulk layer defines the first capacitor plate. A portion of the second insulator layer that is adjacent the first capacitor plate functions as the capacitor dielectric. Either the silicon substrate or a portion of a second bulk layer that is isolated by a third insulator layer and another deep trench isolation structure can function as the second capacitor plate. A first capacitor contact couples, either directly or via a wire array, the first capacitor plate to a circuit node of the device in order to increase the critical charge, Qcrit, of the circuit node.
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: January 1, 2008
    Assignee: International Business Machines Corporation
    Inventors: John M Aitken, Ethan H. Cannon, Philip J. Oldiges, Alvin W. Strong
  • Patent number: 7307304
    Abstract: A ferroelectric material includes a compound of formula (I): (Pb1?x?zBazAx)(ByZr1?y)O3, ??(I) wherein 0?x?0.1, 0?y?0.020, 0.15?z?0.35, with the proviso that y?0 when x=0, and that x?0, when y=0; and wherein A is a first element having a valence number greater than that of Pb, and B is a second element having a valence number greater than that of Zr. A ferroelectric memory device made from the ferroelectric material is also disclosed.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: December 11, 2007
    Assignee: National Tsing Hua University
    Inventors: Tai-Bor Wu, Cheng-Lung Hung
  • Patent number: 7301219
    Abstract: An asymmetrically doped memory cell has first and second N+ doped junctions on a P substrate. A composite charge trapping layer is disposed over the P substrate and between the first and the second N+ doped junctions. A N? doped region is positioned adjacent to the first N+ doped junction and under the composite charge trapping layer. A P? doped region is positioned adjacent to the second N+ doped junction and under the composite charge trapping layer. The asymmetrically doped memory cell will store charges at the end of the composite charge trapping layer that is above the P? doped region. The asymmetrically doped memory cell can function as an electrically erasable programmable read only memory cell, and is capable of multiple level cell operations. A method for making an asymmetrically doped memory cell is also described.
    Type: Grant
    Filed: June 6, 2005
    Date of Patent: November 27, 2007
    Assignee: Macronix International Co., Ltd.
    Inventors: Tzu-Hsuan Hsu, Yen-Hao Shih, Ming-Hsiu Lee
  • Patent number: 7298000
    Abstract: Container structures for use in integrated circuits and methods of their manufacture. The container structures have a dielectric cap on the top of a conductive container to reduce the risk of container-to-container shorting by insulating against bridging of conductive debris across the tops of adjacent container structures. The container structures are adapted for use in memory cells and apparatus incorporating such memory cells, as well as other integrated circuits.
    Type: Grant
    Filed: July 17, 2006
    Date of Patent: November 20, 2007
    Assignee: Micron Technology, Inc.
    Inventors: Gurtej Singh Sandhu, Alan R. Reinberg
  • Patent number: 7288806
    Abstract: The invention includes memory arrays, and methods which can be utilized for forming memory arrays. A patterned etch stop can be used during memory array fabrication, with the etch stop covering storage node contact locations while leaving openings to bitline contact locations. An insulative material can be formed over the etch stop and over the bitline contact locations, and trenches can be formed through the insulative material. Conductive material can be provided within the trenches to form bitline interconnect lines which are in electrical contact with the bitline contact locations, and which are electrically isolated from the storage node contact locations by the etch stop. In subsequent processing, openings can be formed through the etch stop to the storage node contact locations. Memory storage devices can then be formed within the openings and in electrical contact with the storage node contact locations.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: October 30, 2007
    Assignee: Micron Technology, Inc.
    Inventors: Luan C. Tran, Fred D. Fishburn
  • Publication number: 20070235785
    Abstract: A semiconductor device is fabricating using a photoresist mask pattern, and selectively removing portions of a liner nitride layer in a cell region and a peripheral circuit region. A modified FinFET is formed to reduce the influence of signals transmitted by adjacent gate lines in a cell region. A double FinFET and a substantially planar MOSFET are formed in a core region and in a peripheral region, respectively, concurrently with the formation of the modified FinFET.
    Type: Application
    Filed: April 6, 2007
    Publication date: October 11, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae-Rok KAHNG, Makoto YOSHIDA, Se-Myeong JANG
  • Patent number: 7276725
    Abstract: The present invention relates to a bit line barrier metal layer for a semiconductor device and a process for preparing the same, the process comprising: forming bit line contact on an insulation layer vapor-deposited on an upper part of a substrate so as to expose an ion implantation region; vapor-depositing a first barrier metal layer of a Ti film on the entire upper surface thereof; and vapor-depositing, on the upper part of the Ti film, a second barrier metal layer of a ZrB2 film having different upper and lower Boron concentrations, by RPECVD controlling the presence/absence of H2 plasma, wherein the barrier metal layer includes the Ti film, lower ZrB2 film and upper a ZrB2 film sequentially stacked between tungsten bit lines and ion implantation region of a semiconductor substrate.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: October 2, 2007
    Assignee: Hynix Semiconductor Inc.
    Inventor: Byung Soo Eun
  • Patent number: 7262107
    Abstract: A manufacturing process modification is disclosed for producing a metal-insulator-metal (MIM) capacitor. The MIM capacitor may be used in memory cells, such as DRAMs, and may also be integrated into logic processing, such as for microprocessors. The processing used to generate the MIM capacitor is adaptable to current logic processing techniques. Other embodiments are described and claimed.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: August 28, 2007
    Assignee: Intel Corporation
    Inventors: Stephen H. Tang, Ali Keshavarzi, Dinesh Somasekhar, Fabrice Paillet, Muhammad M. Khellah, Yibin Ye, Shih-Lien L. Lu, Vivek K. De
  • Patent number: 7256437
    Abstract: The upper electrode of a capacitor is constituted of laminated films which act to prevent hydrogen atoms from reaching the capacitor electrodes and degrading performance. In one example, a four layer upper electrode respectively acts as a Schottky barrier layer, a hydrogen diffusion preventing layer, a reaction preventing layer, and an adsorption inhibiting layer. Therefore, the occurrence of a capacitance drop, imperfect insulation, and electrode peeling in the semiconductor device due to a reducing atmosphere can be prevented. In addition, the long-term reliability of the device can be improved.
    Type: Grant
    Filed: August 18, 2004
    Date of Patent: August 14, 2007
    Assignee: Renesas Technology Corp.
    Inventors: Hiroshi Miki, Keiko Kushida, Yasuhiro Shimamoto, Shinichiro Takatani, Yoshihisa Fujisaki, Hiromi Nakai
  • Patent number: 7244982
    Abstract: A semiconductor device has a capacitive element including a first conductive film formed on the bottom and wall surfaces of an opening formed in an insulating film on a substrate, a dielectric film formed on the first conductive film, and a second conductive film formed on the dielectric film. The dielectric film of the capacitive element is crystallized. The first and second conductive films are made of a polycrystal of an oxide, a nitride or an oxynitride of a noble metal.
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: July 17, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shinya Natsume, Shinichiro Hayashi
  • Patent number: 7235837
    Abstract: Structures and methods are provided for the use with PMOS devices. Materials with large electron affinities or work functions are provided for structures such as gates. A memory cell is provided that utilizes materials with work functions larger than n-type doped polysilicon (4.1 eV) or aluminum metal (4.1 eV) for gates or capacitor plates.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: June 26, 2007
    Assignee: Micron Technology, Inc.
    Inventors: Leonard Forbes, Salman Akram
  • Patent number: 7233516
    Abstract: A semiconductor device includes a first DRAM section formed on a semiconductor substrate and composed of a plurality of first memory cells and a second DRAM section formed on the semiconductor substrate and composed of a plurality of second memory cells. The operating speed of the first DRAM section is higher than that of the second DRAM section, and the capacitance of each said first memory cell is larger than that of each said second memory cell.
    Type: Grant
    Filed: February 16, 2005
    Date of Patent: June 19, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Yoshiyuki Shibata
  • Patent number: 7208794
    Abstract: Semiconductor memory having memory cells, each including first and second conductively-doped contact regions and a channel region arranged between the latter, formed in a web-like rib made of semiconductor material and arranged one behind the other in this sequence in the longitudinal direction of the rib. The rib has an essentially rectangular shape with an upper side of the rib and rib side faces lying opposite. A memory layer is configured for programming the memory cell, arranged on the upper side of the rib spaced apart by a first insulator layer, and projects in the normal direction of the one rib side face over one of the rib side faces so that the one rib side face and the upper side of the rib form an edge for injecting charge carriers from the channel region into the memory layer.
    Type: Grant
    Filed: March 4, 2005
    Date of Patent: April 24, 2007
    Assignee: Infineon Technologies AG
    Inventors: Franz Hofmann, Erhard Landgraf, Richard Johannes Luyken, Wolfgang Roesner, Michael Specht
  • Patent number: 7208788
    Abstract: A semiconductor device and a manufacturing method thereof in which the peripheral length of an aperture and the mechanical strength of cylinders in a cell can be increased without changing the occupation rate of patterns in the cell. By forming a slit in the middle of each mask pattern so as not to expose parts of wafer, the aperture of the wafer becomes nearly cocoon-shaped with a constriction in the middle. Thereby, the peripheral length of the aperture can be increased without changing the occupation rate of the mask patterns in a cell. Further, the shape of the bottom of the aperture also becomes nearly cocoon-shaped with a constriction in the middle, and therefore it is possible to increase the mechanical strength of cylinders.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: April 24, 2007
    Assignee: Elpida Memory, Inc.
    Inventors: Masahito Hiroshima, Takashi Nishida
  • Patent number: 7202538
    Abstract: A MOSFET transistor structure is formed in a substrate of semiconductor material having a first conductivity type. The MOSFET transistor structure includes an active region that is surrounded by a perimeter isolation dielectric material formed in the substrate to define a continuous sidewall interface between the sidewall dielectric material and the active region. Spaced-apart source and drain regions are formed in the active region and are also spaced-apart from the sidewall interface. A conductive gate electrode that is separated from the substrate channel region by intervening gate dielectric material includes a first portion that extends over the substrate channel region and a second portion that extends continuously over the entire sidewall interface between the isolation dielectric material and the active region.
    Type: Grant
    Filed: August 25, 2003
    Date of Patent: April 10, 2007
    Assignee: National Semiconductor Corporation
    Inventors: Peter J. Hopper, Philipp Lindorfer, Vladislav Vashchenko, Robert Drury
  • Patent number: 7199415
    Abstract: Container structures for use in integrated circuits and methods of their manufacture. The container structures have a dielectric cap on the top of a conductive container to reduce the risk of container-to-container shorting by insulating against bridging of conductive debris across the tops of adjacent container structures. The container structures are adapted for use in memory cells and apparatus incorporating such memory cells, as well as other integrated circuits.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: April 3, 2007
    Assignee: Micron Technology, Inc.
    Inventors: Gurtej Singh Sandhu, Alan R. Reinberg
  • Patent number: 7180114
    Abstract: A semiconductor device includes a silicon substrate having a film thickness smaller than a maximum range of a particle generated by a nuclear reaction between a fast neutron and a silicon atom, and a semiconductor element formed on a surface of the silicon substrate.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: February 20, 2007
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Mitsutoshi Nakamura, Hirotaka Amakawa
  • Patent number: 7145194
    Abstract: In order to improve the soft error resistance of a memory cell of an SRAM without increasing its chip size, in deep through-holes formed by perforating a silicon oxide film, there is a silicon nitride film and a silicon oxide film, a capacitor element having a TiN film serving as a lower electrode, a silicon nitride film serving as an insulator and a TiN film as an upper electrode. This capacitor element is connected between a storage node and a supply voltage line, between a storage node and a reference voltage line, or between storage nodes of the memory cell of the SRAM.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: December 5, 2006
    Assignee: Renesas Technology Corp.
    Inventors: Akio Nishida, Hiraku Chakihara, Koichi Toba
  • Patent number: 7145187
    Abstract: In a multiple input ESD protection structure, the inputs are isolated from the substrate by highly doped regions of opposite polarity to the input regions. Dual polarity is achieved by providing a symmetrical structure with n+ and p+ regions forming each dual polarity input. The inputs are formed in a p-well which, in turn, is formed in a n-well. Each dual polarity input is isolated by a PBL under the p-well, and a NISO underneath the n-well. An isolation ring separates and surrounds the inputs. The isolation ring comprises a p+ ring or a p+ region, n+ region, and p+ region formed into adjacent rings.
    Type: Grant
    Filed: December 12, 2003
    Date of Patent: December 5, 2006
    Assignee: National Semiconductor Corporation
    Inventors: Vladislav Vashchenko, Peter J. Hopper, Philipp Lindorfer
  • Patent number: 7145195
    Abstract: A semiconductor device comprises a semiconductor substrate including an isolation region defining an active area with a plurality of source/drain regions. A contact pad layer is formed on the semiconductor substrate and includes gate line structures, first contact pads connected to parts of the source/drain regions, second contact pads connected to the other source/drain regions. A first interlevel dielectric layer covers the gate line structures and the first and second contact pads. A bit line contact plug layer is formed on the contact pad layer and includes lower storage node contact plugs connected to the first contact pads, bit line contact plugs connected to the second contact pads. A protective layer pattern is formed on the second contact pads to prevent the second contact pads from being connected to the lower storage node contact plugs and/or upper storage node contact plugs.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: December 5, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Je-Min Park, Yoo-Sang Hwang
  • Patent number: 7126177
    Abstract: Disclosed are a semiconductor memory device, a semiconductor device, and a method for production thereof. The semiconductor memory device and semiconductor device do not need for a distance for alignment of lithography to make the contact hole with lithography to form the gate electrode. Hence the resulting devices have a reduced area for the cell array. The semiconductor memory device is composed of a substrate having trenches formed side by side, a plate electrode which is formed to a prescribed depth from the surface of the inner wall of the trench, a capacitor insulating film which covers the surface of the inner wall of the trench, a memory node electrode MN which fills the trench, with the capacitor insulating film interposed between them, and a memory node contact plug which is buried in a contact hole which is so made as to reach the memory node electrode from the surface of the semiconductor layer.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: October 24, 2006
    Assignee: Sony Corporation
    Inventors: Yuzo Fukuzaki, Hiroshi Takahashi