Characterized By Materials Of Semiconductor Body (epo) Patents (Class 257/E29.068)

  • Patent number: 8299500
    Abstract: A heterojunction bipolar transistor (HBT), an integrated circuit (IC) chip including at least one HBT and a method of forming the IC. The HBT includes an extrinsic base with one or more buried interstitial barrier layer. The extrinsic base may be heavily doped with boron and each buried interstitial barrier layer is doped with a dopant containing carbon, e.g., carbon or SiGe:C. The surface of the extrinsic base may be silicided.
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: October 30, 2012
    Assignee: International Business Machines Corporation
    Inventors: Wade J. Hodge, Alvin J. Joseph, Rajendran Krishnasamy, Qizhi Liu, Bradley A. Orner
  • Publication number: 20120267637
    Abstract: Provided is a nitride semiconductor device including: a nitride semiconductor layer over a substrate wherein the nitride semiconductor has a two-dimensional electron gas (2DEG) channel inside; a drain electrode in ohmic contact with the nitride semiconductor layer; a source electrode in Schottky contact with the nitride semiconductor layer wherein the source electrode is spaced apart from the drain electrode; a floating guard ring in Schottky contact with the nitride semiconductor layer between the drain electrode and the source electrode; a dielectric layer formed on the nitride semiconductor layer between the drain electrode and the source electrode and on at least a portion of the source electrode wherein the dielectric layer is applied to the floating guard ring between the drain electrode and the source electrode; and a gate electrode formed on the dielectric layer to be spaced apart from the drain electrode, wherein a portion of the gate electrode is formed over a drain-side edge portion of the source e
    Type: Application
    Filed: August 4, 2011
    Publication date: October 25, 2012
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Woo Chul Jeon, Ki Yeol Park, Young Hwan Park
  • Publication number: 20120267642
    Abstract: Provided is a nitride semiconductor device including: a nitride semiconductor layer over a substrate wherein the nitride semiconductor has a two-dimensional electron gas (2DEG) channel inside; a drain electrode in ohmic contact with the nitride semiconductor layer; a source electrode in Schottky contact with the nitride semiconductor layer wherein the source electrode is spaced apart from the drain electrode; a dielectric layer formed on the nitride semiconductor layer between the drain electrode and the source electrode and on at least a portion of the source electrode; and a gate electrode disposed on the dielectric layer to be spaced apart from the drain electrode, wherein a portion of the gate electrode is formed over a drain-side edge portion of the source electrode with the dielectric layer interposed therebetween, and a manufacturing method thereof.
    Type: Application
    Filed: August 4, 2011
    Publication date: October 25, 2012
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Woo Chul Jeon, Ki Yeol Park, Young Hwan Park
  • Publication number: 20120267632
    Abstract: Methods, devices, and systems are provided for a select device that can include a semiconductive stack of at least one semiconductive material formed on a first electrode, where the semiconductive stack can have a thickness of about 700 angstroms (?) or less. Each of the at least one semiconductive material can have an associated band gap of about 4 electron volts (eV) or less and a second electrode can be formed on the semiconductive stack.
    Type: Application
    Filed: April 19, 2011
    Publication date: October 25, 2012
    Applicant: MICRON TECHNOLOGY, INC.
    Inventors: D.V. Nirmal Ramaswamy, Gurtej S. Sandhu
  • Patent number: 8294272
    Abstract: A power module includes a pair of power devices that are stacked with a plate-shaped output electrode arranged therebetween, and an N-electrode and a P-electrode that are stacked with the pair of power devices arranged therebetween. The output electrode is anisotropic such that the thermal conductivity in a direction orthogonal to the stacking direction is greater than the thermal conductivity in the stacking direction. Also, the output electrode extends in the orthogonal direction from a stacked area where the pair of power devices are stacked. The N-electrode and the P-electrode extend in the orthogonal direction while maintaining an opposing positional relationship.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: October 23, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yasushi Yamada, Hiroshi Osada, Gentaro Yamanaka, Norifumi Furuta, Akio Kitami, Tadafumi Yoshida, Hiromichi Kuno
  • Publication number: 20120261716
    Abstract: A semiconductor device includes a substrate, a buffer layer, and a compound semiconductor layer. The buffer layer is configured by laminating two or more pairs of a first buffer and a second buffer. The first buffer is formed by laminating one or more pairs of an AlN layer and a GaN layer. The second buffer is formed of a GaN layer. A total Al composition of a pair of the first buffer and the second buffer on the compound semiconductor layer side is higher than that of a pair of the first buffer and the second buffer on the substrate side.
    Type: Application
    Filed: April 12, 2012
    Publication date: October 18, 2012
    Applicant: Sanken Electric Co., Ltd.
    Inventor: Masataka YANAGIHARA
  • Publication number: 20120261658
    Abstract: A ZnO-based semiconductor device includes an n type ZnO-based semiconductor layer, an aluminum oxide film formed on the n type ZnO-based semiconductor layer, and a palladium layer formed on the aluminum oxide film. With this configuration, the n type ZnO-based semiconductor layer and the palladium layer form a Schottky barrier structure.
    Type: Application
    Filed: April 12, 2012
    Publication date: October 18, 2012
    Applicants: TOHOKU UNIVERSITY, ROHM CO., LTD.
    Inventors: Shunsuke AKASAKA, Masashi KAWASAKI, Atsushi TSUKAZAKI
  • Publication number: 20120261677
    Abstract: Silicon carbide semiconductor device includes trench, in which connecting trench section is connected to straight trench section. Straight trench section includes first straight trench and second straight trench extending in parallel to each other. Connecting trench section includes first connecting trench perpendicular to straight trench section, second connecting trench that connects first straight trench and first connecting trench to each other, and third connecting trench that connects second straight trench and first connecting trench to each other. Second connecting trench extends at 30 degrees of angle with the extension of first straight trench. Third connecting trench extends at 30 degrees of angle with the extension of second straight trench. A manufacturing method according to the invention for manufacturing a silicon carbide semiconductor device facilitates preventing defects from being causes in a silicon carbide semiconductor device during the manufacture thereof.
    Type: Application
    Filed: June 25, 2012
    Publication date: October 18, 2012
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventors: Yasuyuki KAWADA, Takeshi TAWARA
  • Publication number: 20120261655
    Abstract: Inorganic semiconducting compounds, composites and compositions thereof, and related device structures.
    Type: Application
    Filed: January 16, 2012
    Publication date: October 18, 2012
    Applicant: Northwestern University
    Inventors: Tobin J. Marks, Antonio Facchetti, Lian Wang, Myung-Han Yoon, Yu Yang
  • Publication number: 20120261676
    Abstract: A SiC field effect transistor includes: a SiC semiconductor layer; and a MIS transistor structure including a first conductivity type source region in the semiconductor layer, a second conductivity type body region in the semiconductor layer in contact with the source region, a first conductivity type drift region in the semiconductor layer in contact with the body region, a gate electrode opposed to the body region with a gate insulation film interposed between the electrode and the body region for forming a channel in the body region to cause electric current to flow between the drift region and the source region, and a barrier forming layer in contact with the drift region to form a junction barrier by the contact with the drift region, the junction barrier being lower than a diffusion potential of a body diode defined by a junction between the body region and the drift region.
    Type: Application
    Filed: December 24, 2010
    Publication date: October 18, 2012
    Applicant: ROHN CO., LTD.
    Inventor: Yuki Nakano
  • Publication number: 20120256232
    Abstract: Examples of device structures utilizing layers of rare earth oxides to perform the tasks of strain engineering in transitioning between semiconductor layers of different composition and/or lattice orientation and size are given. A structure comprising a plurality of semiconductor layers separated by transition layer(s) comprising two or more rare earth compounds operable as a sink for structural defects is disclosed.
    Type: Application
    Filed: September 30, 2011
    Publication date: October 11, 2012
    Applicant: Translucent, Inc.
    Inventors: Andrew Clark, F. Erdem Arkun, Michael Lebby
  • Patent number: 8283672
    Abstract: Methods for integrating wide-gap semiconductors with synthetic diamond substrates are disclosed. Diamond substrates are created by depositing synthetic diamond onto a nucleating layer deposited or formed on a layered structure including at least one layer of gallium nitride, aluminum nitride, silicon carbide, or zinc oxide. The resulting structure is a low stress process compatible with wide-gap semiconductor films, and may be processed into optical or high-power electronic devices. The diamond substrates serve as heat sinks or mechanical substrates.
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: October 9, 2012
    Assignee: Group4 Labs, Inc.
    Inventors: Daniel Francis, Felix Ejeckam, John Wasserbauer, Dubravko Babic
  • Publication number: 20120241734
    Abstract: An object is to provide a highly reliable semiconductor device having stable electric characteristics by using an oxide semiconductor film having stable electric characteristics. Another object is to provide a semiconductor device having higher mobility by using an oxide semiconductor film having high crystallinity. A crystalline oxide semiconductor film is formed over and in contact with an insulating film whose surface roughness is reduced, whereby the oxide semiconductor film can have stable electric characteristics. Accordingly, the highly reliable semiconductor device having stable electric characteristics can be provided. Further, the semiconductor device having higher mobility can be provided.
    Type: Application
    Filed: March 15, 2012
    Publication date: September 27, 2012
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Tatsuya HONDA, Takatsugu OMATA, Yusuke NONAKA
  • Publication number: 20120235208
    Abstract: A system and method for reducing density mismatch is disclosed. An embodiment comprises determining a conductor density and an active area density in a high density area and a low density area of a semiconductor device. Dummy material may be added to the low density area in order to raise the conductor density and the active area density, thereby reducing the internal density mismatches between the high density area and the low density area. Additionally, a similar process may be used to reduce external mismatches between different regions on the semiconductor substrate. Once these mismatches have been reduced, empty regions surrounding the different regions may additionally be filled in order to reduce the conductor density mismatch and the active area density mismatches.
    Type: Application
    Filed: March 15, 2011
    Publication date: September 20, 2012
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chung-Hui Chen, Ruey-Bin Sheen, Yung-Chow Peng, Po-Zeng Kang, Chung-Peng Hsieh
  • Publication number: 20120235139
    Abstract: A suspension or solution for an organic optoelectronic device is disclosed. The composition of the suspension or solution includes at least one kind of micro/nano transition metal oxide and a solvent. The composition of the suspension or solution can selectively include at least one kind of transition metal oxide ions or a precursor of transition metal oxide. Moreover, the method of making and applications of the suspension or solution are also disclosed.
    Type: Application
    Filed: May 29, 2012
    Publication date: September 20, 2012
    Applicant: NATIONAL TAIWAN UNIVERSITY
    Inventors: JING-SHUN HUANG, CHING-FUH LIN
  • Publication number: 20120235140
    Abstract: In an embodiment, an insulating film is formed over a flat surface; a mask is formed over the insulating film; a slimming process is performed on the mask; an etching process is performed on the insulating film using the mask; a conductive film covering the insulating film is formed; a polishing process is performed on the conductive film and the insulating film, so that the conductive film and the insulating film have equal thicknesses; the conductive film is etched, so that a source electrode and a drain electrode which are thinner than the conductive film are formed; an oxide semiconductor film is formed in contact with the insulating film, the source electrode, and the drain electrode; a gate insulating film covering the oxide semiconductor film is formed; and a gate electrode is formed in a region which is over the gate insulating film and overlaps with the insulating film.
    Type: Application
    Filed: May 30, 2012
    Publication date: September 20, 2012
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Hideomi SUZAWA, Shinya SASAGAWA
  • Publication number: 20120235138
    Abstract: A method of fabricating a TFT and IPS with reduced masking operations includes a substrate, a gate, a layer of gate dielectric on the gate and surrounding substrate surface and a semiconducting metal oxide on the gate dielectric. A channel protection layer overlies the gate to define a channel area in the semiconducting metal oxide. A S/D metal layer is patterned on the channel protection layer and a portion of the exposed semiconducting metal oxide to define an IPS area. An organic dielectric material is patterned on the S/D terminals and at an opposed side of the IPS area. The S/D metal is etched to expose the semiconducting metal oxide defining a first IPS electrode. A passivation layer covers the first electrode and a layer of transparent conductive material is patterned on the passivation layer to define a second IPS electrode overlying the first electrode.
    Type: Application
    Filed: May 26, 2012
    Publication date: September 20, 2012
    Inventors: Chan-Long Shieh, Gang Yu, Fatt Foong, Liu-Chung Lee
  • Publication number: 20120228628
    Abstract: A semiconductor device and methods of fabricating semiconductor devices are provided. A method involves forming a semiconductor substrate on a source region and a drain region, the semiconductor substrate comprises a first crystal. The method also involves forming an epitaxial layer of a second crystal on the semiconductor substrate. The first crystal has a first lattice constant and the second crystal has a second lattice constant. The first epitaxial layer does not touch a spacer or a gate electrode. Forming the epitaxial layer can comprise forming a first epitaxial layer and a second epitaxial layer, wherein the first epitaxial layer has a conductivity type impurity that is less than the conductivity type impurity of the second epitaxial layer.
    Type: Application
    Filed: March 7, 2011
    Publication date: September 13, 2012
    Applicant: TOSHIBA AMERICA ELECTRONIC COMPONENTS, INC.
    Inventors: Hiroyuki Onoda, Hiroyuki Oota
  • Patent number: 8263965
    Abstract: A single-crystal layer of a first semiconductor material including single-crystal nanostructures of a second semiconductor material, the nanostructures being distributed in a regular crystallographic network with a centered tetragonal prism.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: September 11, 2012
    Assignees: STMicroelectronics (Crolles 2) SAS, STMicroelectronics S.A.
    Inventors: Yves Campidelli, Oliver Kermarrec, Daniel Bensahel
  • Publication number: 20120223299
    Abstract: Embodiments include memory cells having an oxide material in contact with a metal material. In one embodiment, a memory cell includes titanium nitride, titanium oxynitride in contact with the titanium nitride and copper in contact with the titanium oxynitride. A plurality of such memory cells and respective access devices can be included in a memory array. The memory cell and access device are electrically connected between an access line and a data/sense line. An array can include a plurality of memory cells vertically stacked with respective access devices. Embodiments also include methods of forming memory cells and arrays and stacking memory arrays over one another.
    Type: Application
    Filed: March 4, 2011
    Publication date: September 6, 2012
    Inventor: Jun Liu
  • Publication number: 20120225296
    Abstract: A method of producing uniform multilayer graphene by chemical vapor deposition (CVD) is provided. The method is limited in size only by CVD reaction chamber size and is scalable to produce multilayer graphene films on a wafer scale that have the same number of layers of graphene throughout substantially the entire film. Uniform bilayer graphene may be produced using a method that does not require assembly of independently produced single layer graphene. The method includes a CVD process wherein a reaction gas is flowed in the chamber at a relatively low pressure compared to conventional processes and the temperature in the reaction chamber is thereafter decreased relatively slowly compared to conventional processes. One application for uniform multilayer graphene is transparent conductors. In processes that require multiple transfers of single layer graphene to achieve multilayer graphene structures, the disclosed method can reduce the number of process steps by at least half.
    Type: Application
    Filed: September 2, 2011
    Publication date: September 6, 2012
    Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Zhaohui Zhong, Seunghyun Lee, Kyunghoon Lee
  • Publication number: 20120223320
    Abstract: A III-N semiconductor device can include an electrode-defining layer having a thickness on a surface of a III-N material structure. The electrode-defining layer has a recess with a sidewall, the sidewall comprising a plurality of steps. A portion of the recess distal from the III-N material structure has a first width, and a portion of the recess proximal to the III-N material structure has a second width, the first width being larger than the second width. An electrode is in the recess, the electrode including an extending portion over the sidewall of the recess. A portion of the electrode-defining layer is between the extending portion and the III-N material structure. The sidewall forms an effective angle of about 40 degrees or less relative to the surface of the III-N material structure.
    Type: Application
    Filed: March 4, 2011
    Publication date: September 6, 2012
    Applicant: TRANSPHORM INC.
    Inventor: Yuvaraj Dora
  • Publication number: 20120223305
    Abstract: Provided is a highly reliable semiconductor device by giving stable electric characteristics to a transistor in which a semiconductor film whose threshold voltage is difficult to control is used as an active layer. By using a silicon oxide film having a negative fixed charge as a film in contact with the active layer of the transistor or a film in the vicinity of the active layer, a negative electric field is always applied to the active layer due to the negative fixed charge and the threshold voltage of the transistor can be shifted in the positive direction. Thus, the highly reliable semiconductor device can be manufactured by giving stable electric characteristics to the transistor.
    Type: Application
    Filed: February 24, 2012
    Publication date: September 6, 2012
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Hitomi SATO, Takayuki SAITO, Kosei NODA, Toru TAKAYAMA
  • Publication number: 20120223303
    Abstract: The present invention generally relates to an offset electrode TFT and a method of its manufacture. The offset electrode TFT is a TFT in which one electrode, either the source or the drain, surrounds the other electrode. The gate electrode continues to be below both the source and the drain electrodes. By redesigning the TFT, less voltage is necessary to transfer the voltage from the source to the drain electrode as compared to traditional bottom gate TFTs or top gate TFTs. The offset electrode TFT structure is applicable not only to silicon based TFTs, but also to transparent TFTs that include metal oxides such as zinc oxide or IGZO and metal oxynitrides such as ZnON.
    Type: Application
    Filed: November 4, 2011
    Publication date: September 6, 2012
    Applicant: APPLIED MATERIALS, INC.
    Inventor: Yan Ye
  • Publication number: 20120223321
    Abstract: One exemplary disclosed embodiment comprises a three-terminal stacked-die package including a field effect transistor (FET), such as a silicon FET, stacked atop a III-nitride transistor, such that a drain of the FET resides on and is electrically coupled to a source of the III-nitride transistor. A first terminal of the package is coupled to a gate of the FET, a second terminal of the package is coupled to a drain of the III-nitride transistor. A third terminal of the package is coupled to a source of the FET. In this manner, devices such as cascoded switches may be packaged in a stacked-die form, resulting in reduced parasitic inductance and resistance, improved thermal dissipation, smaller form factor, and lower manufacturing cost compared to conventional packages.
    Type: Application
    Filed: March 22, 2011
    Publication date: September 6, 2012
    Applicant: INTERNATIONAL RECTIFIER CORPORATION
    Inventors: Heny Lin, Jason Zhang, Alberto Guerra
  • Publication number: 20120223331
    Abstract: A semiconductor device comprises: a semiconductor substrate located on an insulating layer; and an insulator located on the insulating layer and embedded in the semiconductor substrate, wherein the insulator applies stress therein to the semiconductor substrate. A method for forming a semiconductor device comprises: forming a semiconductor substrate on an insulating layer; forming a cavity within the semiconductor substrate so as to expose the insulating layer; forming an insulator in the cavity, wherein the insulator applies stress therein to the semiconductor substrate. It facilitates the reduction of the short channel effect, the resistance of source/drain regions and parasitic capacitance.
    Type: Application
    Filed: March 2, 2011
    Publication date: September 6, 2012
    Applicant: INSTITUTE OF MICROELECTRONICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Huilong Zhu, Qingqing Liang, Zhijiong Luo, Haizhou Yin
  • Publication number: 20120217513
    Abstract: A SiC MOSFET has a subject that resistance in the source region is increased when annealing for metal silicidation is performed to a source region before forming the gate insulating film, the metal silicide layer of the source region is oxidized by an oxidizing treatment (including oxynitriding treatment) when the gate insulating film is formed. When a metal silicide layer to be formed on the surface of a SiC epitaxial substrate is formed before forming a gate insulating film interface layer (oxide film), and an anti-oxidation film for the metal silicide is formed on the metal silicide layer, it is possible to suppress oxidation of the metal silicide layer by the oxidizing treatment upon forming the gate insulating film interface layer and the resistance of the source region can be decreased without lowering the channel mobility.
    Type: Application
    Filed: January 12, 2012
    Publication date: August 30, 2012
    Inventors: Naoki TEGA, Yasuhiro Shimamoto, Yuki Mori, Hirotaka Hamamura, Hiroyuki Okino, Digh Hisamoto
  • Publication number: 20120217480
    Abstract: An electrical circuit structure employing graphene as a charge carrier transport layer. The structure includes a plurality of graphene layers. Electrical contact is made with one of the layer of the plurality of graphene layers, so that charge carriers travel only through that one layer. By constructing the active graphene layer within or on a plurality of graphene layers, the active graphene layer maintains the necessary planarity and crystalline integrity to ensure that the high charge carrier mobility properties of the active graphene layer remain intact.
    Type: Application
    Filed: May 1, 2012
    Publication date: August 30, 2012
    Applicant: Hitachi Global Storage Technologies Netherlands B.V.
    Inventor: Ernesto E. Marinero
  • Publication number: 20120218783
    Abstract: There is embodied a high-reliability high-voltage resistance compound semiconductor device capable of improving the speed of device operation, being high in avalanche resistance, being resistant to surges, eliminating the need to connect any external diodes when applied to, for example, an inverter circuit, and achieving stable operation even if holes are produced, in addition to alleviating the concentration of electric fields on a gate electrode and thereby realizing a further improvement in voltage resistance. A gate electrode is formed so as to fill an electrode recess formed in a structure of stacked compound semiconductors with an electrode material through a gate insulation film, and a field plate recess formed in the structure of stacked compound semiconductors is filled with a p-type semiconductor, thereby forming a field plate the p-type semiconductor layer of which has contact with the structure of stacked compound semiconductors.
    Type: Application
    Filed: December 15, 2011
    Publication date: August 30, 2012
    Applicant: FUJITSU LIMITED
    Inventor: Tadahiro IMADA
  • Patent number: 8253124
    Abstract: This invention provides a semiconductor element which uses a plurality of carbon nanotubes as a current path, can reduce contact resistance of its electrode contact part, and has excellent electrical characteristics. This semiconductor element is characterized in that the semiconductor element includes a current path (16) comprised of a plurality of carbon nanotubes (18) and not less than two electrodes (14, 15) connected with the current path, wherein at least one or more of the electrodes is made of a mixture of a metal and a carbon material (17) having SP2 hybridized orbital, such as a multi-walled carbon nanotube, a glassy carbon, and graphite particles.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: August 28, 2012
    Assignee: NEC Corporation
    Inventors: Hideaki Numata, Kazuki Ihara
  • Patent number: 8247813
    Abstract: One embodiment of the present invention provides a highly reliably display device in which a high mobility is achieved in an oxide semiconductor. A first oxide component is formed over a base component. Crystal growth proceeds from a surface toward an inside of the first oxide component by a first heat treatment, so that a first oxide crystal component is formed in contact with at least part of the base component. A second oxide component is formed over the first oxide crystal component. Crystal growth is performed by a second heat treatment using the first oxide crystal component as a seed, so that a second oxide crystal component is formed. Thus, a stacked oxide material is formed. A transistor with a high mobility is formed using the stacked oxide material and a driver circuit is formed using the transistor.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: August 21, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Jun Koyama, Shunpei Yamazaki
  • Publication number: 20120205650
    Abstract: Nano-sized materials and/or polysilicon are formed using heat generated from a micro-heater, the micro-heater may include a substrate, a heating element unit formed on the substrate, and a support structure formed between the substrate and the heating element unit. Two or more of the heating element units may be connected in series.
    Type: Application
    Filed: April 20, 2012
    Publication date: August 16, 2012
    Inventors: Junhee Choi, Andrei Zoulkarneev, SungSoo Park
  • Publication number: 20120199842
    Abstract: A highly integrated DRAM is provided. A bit line is formed over a first insulator, a second insulator is formed over the bit line, third insulators which are in a stripe shape and the like are formed over the second insulator, and a semiconductor region and a gate insulator are formed to cover one of the third insulators. The bit line is connected to the semiconductor region through first contact plugs. Then, a conductive film is formed and subjected to anisotropic etching to form word lines at side surfaces of the third insulators, and a second contact plug is formed to be connected to a capacitor at a top of the one of the third insulators. By synchronizing the word lines, electric charge is accumulated or released through the capacitor. With such a structure, the area of a memory cell can be 4F2.
    Type: Application
    Filed: January 27, 2012
    Publication date: August 9, 2012
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventor: Yasuhiko TAKEMURA
  • Patent number: 8237150
    Abstract: A p-type semiconductor nanowire transistor is formed on the first semiconductor nanowire and an n-type semiconductor nanowire transistor is formed on the second semiconductor nanowire. The first and second semiconductor nanowires have a rectangular cross-sectional area with different width-to-height ratios. The type of semiconductor nanowires for each semiconductor nanowire transistor is selected such that top and bottom surfaces provide a greater on-current per unit width than sidewall surfaces in a semiconductor nanowire having a greater width-to-height ratio, while sidewall surfaces provide a greater on-current per unit width than top and bottom surfaces in the other semiconductor nanowire having a lesser width-to-height ratio. Different types of stress-generating material layers may be formed on the first and second semiconductor nanowire transistors to provide opposite types of stress, which may be employed to enhance the on-current of the first and second semiconductor nanowire transistors.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: August 7, 2012
    Assignee: International Business Machines Corporation
    Inventors: Dureseti Chidambarrao, Xiao H. Liu, Lidija Sekaric
  • Publication number: 20120187416
    Abstract: A semiconductor device includes a semiconductor substrate having a collector layer in which the carrier concentration is maximized at a carrier concentration peak position that is 1 ?m or more from a surface of the semiconductor substrate. The semiconductor device further includes a collector electrode formed in contact with a surface of the collector layer.
    Type: Application
    Filed: September 20, 2011
    Publication date: July 26, 2012
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Shigeto HONDA
  • Publication number: 20120187525
    Abstract: Device structures with a reduced junction area in an SOI process, methods of making the device structures, and design structures for a lateral diode. The device structure includes one or more dielectric regions, such as STI regions, positioned in the device region and intersecting the p-n junction between an anode and cathode. The dielectric regions, which may be formed using shallow trench isolation techniques, function to reduce the width of a p-n junction with respect to the width area of the cathode at a location spaced laterally from the p-n junction and the anode. The width difference and presence of the dielectric regions creates an asymmetrical diode structure. The volume of the device region occupied by the dielectric regions is minimized to preserve the volume of the cathode and anode.
    Type: Application
    Filed: January 24, 2011
    Publication date: July 26, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Michel J. Abou-Khalil, Robert J. Gauthier, JR., Tom C. Lee, Junjun Li, Souvick Mitra, Christopher S. Putnam
  • Patent number: 8227833
    Abstract: Non-silicon metal-insulator-semiconductor (MIS) devices and methods of forming the same. The non-silicon MIS device includes a gate dielectric stack which comprises at least two layers of non-native oxide or nitride material. The first material layer of the gate dielectric forms an interface with the non-silicon semiconductor surface and has a lower dielectric constant than a second material layer of the gate dielectric. In an embodiment, a dual layer including a first metal silicate layer and a second oxide layer provides both a good quality oxide-semiconductor interface and a high effective gate dielectric constant.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: July 24, 2012
    Assignee: Intel Corporation
    Inventors: Gilbert Dewey, Marko Radosavljevic, Ravi Pillarisetty, Robert S. Chau
  • Publication number: 20120181534
    Abstract: A memory device in which a write error can be prevented is provided. The memory device includes a NAND cell unit including a plurality of memory cells connected in series, a first selection transistor connected to one of terminals of the NAND cell unit, a second selection transistor connected to the other of the terminals of the NAND cell unit, a source line connected to the first selection transistor, and a bit line which intersects with the source line and is connected to the second selection transistor. In the memory device, a channel region of each of the first selection transistor and the second selection transistor is formed in an oxide semiconductor layer.
    Type: Application
    Filed: January 9, 2012
    Publication date: July 19, 2012
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventor: Takehisa Hatano
  • Publication number: 20120181664
    Abstract: The present invention proposes a strip plate structure and a method of manufacturing the same. In one embodiment, the strip plate structure comprises a strip plate array comprising a plurality of strip plates arranged in a predetermined direction with spacing, each of said strip plates including a first surface facing one side direction of the strip plate structure and a second surface facing an substantially opposite side direction of the strip plate structure; and a plurality of strip sheets, each strip sheet alternately abutting either the first surfaces or the second surfaces of two adjacent strip plates.
    Type: Application
    Filed: April 14, 2010
    Publication date: July 19, 2012
    Inventors: Huilong Zhu, Haizhou Yin, Zhijiong Luo
  • Publication number: 20120181506
    Abstract: Graphene or carbon nanotube-based transistor devices and techniques for the fabrication thereof are provided. In one aspect, a transistor is provided. The transistor includes a substrate; a carbon-based material on the substrate, wherein a portion of the carbon-based material serves as a channel region of the transistor and other portions of the carbon-based material serve as source and drain regions of the transistor; a patterned organic buffer layer over the portion of the carbon-based material that serves as the channel region of the transistor; a conformal high-k gate dielectric layer disposed selectively on the patterned organic buffer layer; metal source and drain contacts formed on the portions of the carbon-based material that serve as the source and drain regions of the transistor; and a metal top-gate contact formed on the high-k gate dielectric layer.
    Type: Application
    Filed: January 16, 2011
    Publication date: July 19, 2012
    Applicant: International Business Machines Corporation
    Inventors: Damon Brooks Farmer, Qinghuang Lin, Yu-Ming Lin
  • Publication number: 20120181533
    Abstract: A thin film transistor array panel includes: an substrate; a gate line positioned on the substrate; a data line intersecting the gate line; a thin film transistor connected to the gate line and the data line; a gate insulating layer between the gate electrode of the thin film transistor and the semiconductor of the thin film transistor; a pixel electrode connected to the thin film transistor; and a passivation layer positioned between the pixel electrode and the thin film transistor, wherein at least one of the gate insulating layer and the passivation layer includes a silicon nitride layer, and the silicon nitride layer includes hydrogen content at less than 2×1022 cm3 or 4 atomic %.
    Type: Application
    Filed: September 23, 2011
    Publication date: July 19, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyeong Suk YOO, Joo-Han KIM, Je Hun LEE, Seong-Hun KIM, Jung Kyu LEE, Chang Oh JEONG
  • Patent number: 8222639
    Abstract: An interfacial reaction suppressing layer 12 formed between an oxide layer including a ZnO single crystal substrate 11 and a nitride layer including an InGaN semiconductor layer 13 restrains the interfacial reaction between the oxide layer and the nitride layer and formation of a reaction layer (Al2ZnO4) at the interface, which makes it possible to grow and thermally treat the InGaN semiconductor layer 13 at a high temperature. Thus, a crystal quality of the InGaN semiconductor layer 13 is improved.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: July 17, 2012
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Tatsuyuki Shinagawa, Hirotatsu Ishii, Akihiko Kasukawa
  • Publication number: 20120175629
    Abstract: A semiconductor epitaxial structure is provided. The semiconductor epitaxial structure includes a substrate, a doped semiconductor epitaxial layer, and a carbon nanotube layer. The doped semiconductor epitaxial layer is located on the substrate. The carbon nanotube layer is located between the substrate and the doped semiconductor epitaxial layer. The carbon nanotube layer can be a carbon nanotube film drawn from a carbon nanotube array and including a plurality of successive and oriented carbon nanotubes joined end-to-end by van der Waals attractive force therebetween.
    Type: Application
    Filed: October 18, 2011
    Publication date: July 12, 2012
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITY
    Inventors: YANG WEI, SHOU-SHAN FAN
  • Publication number: 20120175606
    Abstract: An epitaxial structure is provided. The epitaxial structure includes a substrate, an epitaxial layer and a carbon nanotube layer. The epitaxial layer is located on the substrate. The carbon nanotube layer is located between the substrate and the epitaxial layer. The carbon nanotube layer can be a carbon nanotube film drawn from a carbon nanotube array and including a plurality of successive and oriented carbon nanotubes joined end-to-end by van der Waals attractive force therebetween.
    Type: Application
    Filed: October 14, 2011
    Publication date: July 12, 2012
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITY
    Inventors: YANG WEI, CHEN FENG, SHOU-SHAN FAN
  • Publication number: 20120168770
    Abstract: A heat dissipation structure of a chip in the field of microelectronics is provided. The heat dissipation structure includes a P-type superlattice layer and an N-type superlattice layer formed over an upper surface of the chip by oxidation isolation. The P-type superlattice and the N-type superlattice are isolated by silicon oxide. Through a contact hole the P-type superlattice is electrically connected to a metal layer that is applied with a low potential in the chip, and a metal layer to be connected with an external power source is formed over the P-type superlattice. Through a contact hole the N-type superlattice is electrically connected to a metal layer that is applied with a high-potential power source in the chip, and a metal layer to be connected with an external power source is formed over the N-type superlattice. The potential of the external power source connected with the P-type superlattice is lower than that of the external power source connected with the N-type superlattice.
    Type: Application
    Filed: November 18, 2011
    Publication date: July 5, 2012
    Inventors: Ru Huang, Xin Huang, Tianwei Zhang, Qianqian Huang, Shiqiang Qin
  • Publication number: 20120168743
    Abstract: A thin film transistor (TFT) including a gate, a gate insulator, an oxide semiconductor channel layer, a source, and a drain is provided. The gate insulator covers the gate, while the oxide semiconductor channel layer is configured on the gate insulator and located above the gate. The oxide semiconductor channel layer includes a first sub-layer and a second sub-layer located on the first sub-layer. An oxygen content of the first sub-layer is lower than an oxygen content of the second sub-layer. The source and the drain are configured on a portion of the second sub-layer. In addition, a fabricating method of the above-mentioned TFT is also provided.
    Type: Application
    Filed: April 29, 2011
    Publication date: July 5, 2012
    Applicant: AU OPTRONICS CORPORATION
    Inventors: Liu-Chung Lee, Hung-Che Ting, Chia-Yu Chen
  • Publication number: 20120168767
    Abstract: A semiconductor device includes a plurality of floating regions, an insulating layer and a capacitance forming portion. The plurality of floating regions are arranged on a surface of a semiconductor substrate in a row, wherein the plurality of floating regions are provided with insulating regions therebetween. The plurality of floating regions include a first floating region and a second floating region. The second floating region is located farther than the first floating region from an island region of a predetermined potential on the semiconductor substrate. The insulating layer is interposed between each of the plurality of floating regions and a semiconductor material layer of the semiconductor substrate. The capacitance forming portion forms an external capacitance in parallel with the capacitance of the insulating region between the first floating region and the island region of the predetermined potential.
    Type: Application
    Filed: July 13, 2011
    Publication date: July 5, 2012
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Tomohide TERASHIMA
  • Publication number: 20120168713
    Abstract: The present invention is to provide a method for manufacturing a silicon nanowire array comprising (a) preparing a porous metal film; (b) placing the porous metal film in contact with a silicon substrate; and (c) etching the silicon substrate with a silicon etching solution. The present invention allows manufacturing vertically aligned large-area silicon nanowires by using the porous metal film as a catalyst and manufacturing nanowires having a porous structure, a porous nodular structure, an inclined structure and a zig-zag structure, which are distinguishable from nanowires of the prior art in their shape and crystallographic orientation, by adjusting etching conditions such as the composition of the silicon etching solution and the etching temperature in the step in which the silicon substrate is subjected to wet etching.
    Type: Application
    Filed: September 3, 2010
    Publication date: July 5, 2012
    Applicant: Korea Research Institute of Standards and Science
    Inventors: Woo Lee, Jung-Kil Kim, Jae-Cheon Kim
  • Publication number: 20120168747
    Abstract: Provided are a composition for an oxide semiconductor, a preparation method of the composition, a method for forming an oxide semiconductor thin film using the composition, and a method for forming an electronic device using the composition. The composition for an oxide semiconductor includes a compound for an oxide thin film and a stabilizer for adjusting conductivity of the oxide thin film. The stabilizer is included with the mole number of two to twelve times larger than the total mole number of the compound.
    Type: Application
    Filed: December 30, 2011
    Publication date: July 5, 2012
    Applicant: Industry-Academic Corporation Foundation, Yonsei University
    Inventors: Hyun Jae KIM, Woong Hee Jeong, Jung Hyeon Bae, Kyung Min Kim
  • Publication number: 20120168773
    Abstract: Semiconductor-on-diamond (SOD) substrates and methods for making such substrates are provided. In one aspect, a method of making an SOD substrate may include depositing a base layer onto a lattice-orienting silicon (Si) substrate such that the base layer lattice is substantially oriented by the Si substrate, depositing a semiconductor layer onto the base layer such that the semiconductor layer lattice is substantially oriented with respect to the base layer lattice, and disposing a layer of diamond onto the semiconductor layer. The base layer may include numerous materials, including, without limitation, aluminum phosphide (AlP), boron arsenide (BAs), gallium nitride (GaN), indium nitride (InN), and combinations thereof. Additionally, the method may further include removing the lattice-orienting Si substrate and the base layer from the semiconductor layer. In one aspect, the Si substrate may be of a single crystal orientation.
    Type: Application
    Filed: December 23, 2011
    Publication date: July 5, 2012
    Inventor: Chien-Min Sung