Vertical Channel Patents (Class 438/156)
  • Publication number: 20110240987
    Abstract: A thin film transistor and a method of manufacturing the same are provided. The thin film transistor includes a first gate electrode and an active layer including a crystalline oxide semiconductor which is insulated from the first gate electrode by a first insulating layer and the active layer is arranged to overlap the first gate electrode. A source electrode is formed including at least a portion overlaps the active layer, and a drain electrode is arranged being spaced apart from the source electrode and at least a portion of the drain electrode overlaps the active layer, wherein the source electrode and the drain electrode are insulated from the first gate electrode by the first insulating layer.
    Type: Application
    Filed: March 16, 2011
    Publication date: October 6, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Je-Hun LEE, Joo-Han KIM
  • Publication number: 20110242464
    Abstract: According to the insulated gate transistor, a gate electrode (11A) is provided on a main surface of a glass substrate (2); a first part of an insulating layer (gate insulating layer (30) and transparent inorganic insulating layer (60)) is thicker than a second part of the insulating layer (gate insulating layer (30)), the first part being between (i) the gate electrode (11A) and (ii) a source electrode (12) and a drain electrode (21) of the insulated gate transistor, and the second part being between (i) the gate electrode (11A) and (ii) a channel section (31A) of the insulated gate transistor. This makes it possible to reduce parasitic capacitor without deteriorating characteristics of the transistor.
    Type: Application
    Filed: December 16, 2009
    Publication date: October 6, 2011
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Kiyohiro Kawasaki
  • Patent number: 8021949
    Abstract: A method for fabrication of features for an integrated circuit includes patterning a first semiconductor structure on a surface of a semiconductor device, and epitaxially growing semiconductor material on opposite sides of the first semiconductor structure to form fins. A first angled ion implantation is applied to one side of the first semiconductor structure to dope a respective fin on the one side. The first semiconductor structure is selectively removed to expose the fins. Fin field effect transistors are formed using the fins.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: September 20, 2011
    Assignee: International Business Machines Corporation
    Inventors: Kangguo Cheng, Bruce B. Doris, Ying Zhang
  • Patent number: 8022412
    Abstract: An epitaxial structure having a low defect density includes: a base layer; a first epitaxial layer having a plurality of concentrated defect groups, and an epitaxial surface that has a plurality of first recesses corresponding in position to the concentrated defect groups, the sizes of the first recesses being close to each other; and a plurality of defect-termination blocks respectively and filling the first recesses and having polished surfaces. The defect-termination blocks are made of a material which is different in removal rate from that of the first epitaxial layer.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: September 20, 2011
    Assignee: National Chung-Hsien University
    Inventors: Dong-Sing Wuu, Ray-Hua Horng, Shih-Ting Chen, Tshung-Han Tsai, Hsueh-Wei Wu
  • Publication number: 20110220891
    Abstract: A semiconductor device includes a wiring embedded in an insulating layer, an oxide semiconductor layer over the insulating layer, a source electrode and a drain electrode electrically connected to the oxide semiconductor layer, a gate electrode provided to overlap with the oxide semiconductor layer, and a gate insulating layer provided between the oxide semiconductor layer and the gate electrode. The insulating layer is formed so that part of a top surface of the wiring is exposed. The part of the top surface of the wiring is positioned higher than part of a surface of the insulating layer. The wiring in a region exposed from the insulating layer is electrically connected to the source electrode or the drain electrode. The root-mean-square roughness of a region which is part of the surface of the insulating layer and in contact with the oxide semiconductor layer is 1 nm or less.
    Type: Application
    Filed: March 3, 2011
    Publication date: September 15, 2011
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Teruyuki FUJII, Ryota IMAHAYASHI
  • Publication number: 20110220897
    Abstract: An array substrate of a liquid crystal display and a method of fabrication for the same are disclosed. The method of fabrication includes: forming a gate electrode on a first region of a substrate, where the substrate is divided into first and second regions, forming a lower storage electrode, including a transparent conductive material, on the second region of the substrate, and forming a gate insulating layer on the substrate, where the gate insulating layer includes first, second and third gate insulating sub-layers.
    Type: Application
    Filed: February 24, 2011
    Publication date: September 15, 2011
    Applicant: SAMSUNG MOBILE DISPLAY CO., LTD.
    Inventor: Young-Chul SHIN
  • Publication number: 20110215322
    Abstract: A thin film transistor includes a gate electrode formed on a substrate, a semiconductor pattern overlapped with the gate electrode, a source electrode overlapped with a first end of the semiconductor pattern and a drain electrode overlapped with a second end of the semiconductor pattern and spaced apart from the source electrode. The semiconductor pattern includes an amorphous multi-elements compound including a II B element and a VI A element or including a III A element and a V A element and having an electron mobility no less than 1.0 cm2/Vs and an amorphous phase, wherein the VI A element excludes oxygen. Thus, a driving characteristic of the thin film transistor may be improved.
    Type: Application
    Filed: February 25, 2011
    Publication date: September 8, 2011
    Inventors: Jae-Woo Park, Je-Hun Lee, Seong-Jin Yeon, Yeon-Hong Kim
  • Publication number: 20110215326
    Abstract: Disclosed is a semiconductor device including: an insulating layer; a source electrode and a drain electrode embedded in the insulating layer; an oxide semiconductor layer in contact and over the insulating layer, the source electrode, and the drain electrode; a gate insulating layer over and covering the oxide semiconductor layer; and a gate electrode over the gate insulating layer, where the upper surfaces of the insulating layer, the source electrode, and the drain electrode exist coplanarly. The upper surface of the insulating layer, which is in contact with the oxide semiconductor layer, has a root-mean-square (RMS) roughness of 1 nm or less, and the difference in height between the upper surface of the insulating layer and the upper surface of the source electrode or the drain electrode is less than 5 nm. This structure contributes to the suppression of defects of the semiconductor device and enables their miniaturization.
    Type: Application
    Filed: March 1, 2011
    Publication date: September 8, 2011
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Hiromichi GODO, Ryota IMAHAYASHI, Kiyoshi KATO
  • Patent number: 8012782
    Abstract: In a liquid crystal display device, a first substrate includes electrical wirings and a semiconductor integrated circuit which has TFTs and is connected electrically to the electrical wirings, and a second substrate includes a transparent conductive film on a surface thereof. A surface of the first substrate that the electrical wirings are formed is opposite to the transparent conductive film on the second substrate. the semiconductor integrated circuit has substantially the same length as one side of a display screen (i.e., a matrix circuit) of the display device and is obtained by peeling it from another substrate and then forming it on the first substrate. Also, in a liquid crystal display device, a first substrate includes a matrix circuit and a peripheral driver circuit, and a second substrate is opposite to the first substrate, includes a matrix circuit and a peripheral driver circuit and has at least a size corresponding to the matrix circuit and the peripheral driver circuit.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: September 6, 2011
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Setsuo Nakajima, Yasuyuki Arai
  • Publication number: 20110210376
    Abstract: A transistor includes a semiconductor channel disposed nearby a gate and in an electrical path between a source and a drain, wherein the channel and at least one of the source or the drain are separated by an interface layer so as to form a channel-interface layer-source/drain junction in which a Fermi level of the semiconductor channel is depinned in a region near the junction and the junction has a specific contact resistance of less than approximately 1000 ?-?m2. The interface layer may include a passivating material such as a nitride, a fluoride, an oxide, an oxynitride, a hydride and/or an arsenide of the semiconductor of the channel. In some cases, the interface layer consists essentially of a monolayer configured to depin the Fermi level of the semiconductor of the channel, or an amount of passivation material sufficient to terminate all or a sufficient number of dangling bonds of the semiconductor channel to achieve chemical stability of the surface.
    Type: Application
    Filed: February 7, 2011
    Publication date: September 1, 2011
    Inventors: Daniel E. Grupp, Daniel J. Connelly
  • Publication number: 20110210347
    Abstract: A semiconductor device including: a thin film transistor substrate; and a driving circuit, wherein the thin film transistor substrate includes: a thin film transistor includes: a gate electrode; a gate insulating film that is formed on the insulating substrate and the gate electrode; a semiconductor layer that is formed on the gate insulating film; a channel protecting film; and a source electrode and a drain electrode that are formed to connect with the semiconductor layer; and a wiring converting unit that directly and electrically connects a first wiring layer and a second wiring layer through a first contact hole formed in the gate insulating film in the driving circuit, wherein the first wiring layer is formed at the same layer as the gate electrode on the insulating substrate; and wherein the second wiring layer is formed at the same layer as the source electrode and the drain electrode.
    Type: Application
    Filed: February 23, 2011
    Publication date: September 1, 2011
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Toru TAKEGUCHI
  • Patent number: 8008136
    Abstract: A method may include forming a gate electrode over a fin structure, depositing a first metal layer on a top surface of the gate electrode, performing a first silicide process to convert a portion of the gate electrode into a metal-silicide compound, depositing a second metal layer on a top surface of the metal-silicide compound, and performing a second silicide process to form a fully-silicided gate electrode.
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: August 30, 2011
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Ming-Ren Lin, Witold P. Maszara, Haihong Wang, Bin Yu
  • Publication number: 20110193076
    Abstract: A thin film transistor panel includes an insulating substrate, a gate insulating layer disposed on the insulating substrate, an oxide semiconductor layer disposed on the gate insulating layer, an etch stopper disposed on the oxide semiconductor layer, and a source electrode and a drain electrode disposed on the etch stopper.
    Type: Application
    Filed: December 1, 2010
    Publication date: August 11, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Pil-Sang YUN, Ki-Won KIM, Hye-Young RYU, Woo-Geun LEE, Seung-Ha CHOI, Jae-Hyoung YOUN, Kyoung-Jae CHUNG, Young-Wook LEE, Je-Hun LEE, Kap-Soo YOON, Do-Hyun KIM, Dong-Ju YANG, Young-Joo CHOI
  • Patent number: 7993988
    Abstract: Methods for fabricating a non-planar transistor. Fin field effect transistors (finFETs) are often built around a fin (e.g., a tall, thin semiconductive member). During manufacturing, a fin may encounter various mechanical stresses, e.g., inertial forces during movement of the substrate and fluid forces during cleaning steps. If the forces on the fin are too large, the fin may fracture and possibly render a transistor inoperative. Supporting one side of a fin before forming the second side of a fin creates stability in the fin structure, thereby counteracting many of the mechanical stresses incurred during manufacturing.
    Type: Grant
    Filed: August 10, 2009
    Date of Patent: August 9, 2011
    Assignee: Micron Technology, Inc.
    Inventor: Werner Juengling
  • Patent number: 7981737
    Abstract: A thin film transistor array panel according to the present invention includes: a gate line formed on a substrate and including a gate electrode; a gate insulating layer formed on the gate electrode; a mold layer formed on the gate insulating layer and having an opening overlapping the gate electrode; a semiconductor layer filled in the opening; a data line formed on the mold layer and including a source electrode contacted with the semiconductor layer; a drain electrode contacted with the semiconductor layer on the mold layer and facing the source electrode; a passivation layer formed on the data line and the drain electrode; and a pixel electrode formed on the passivation layer and connected to the drain electrode, wherein the passivation layer, the source electrode, and the drain electrode have at least one through-hole connected to the opening.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: July 19, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ju-Han Bae, Kyu-Young Kim
  • Publication number: 20110169087
    Abstract: The invention provides various embodiments of a memory cell formed on a semiconductor-on-insulator (SeOI) substrate and comprising one or more FET transistors. Each FET transistor has a source region and a drain region at least portions of which are arranged in the thin layer of the SeOI substrate, a channel region in which a trench is made, and a gate region formed in the trench. Specifically, the source, drain and channel regions also have portions which are arranged also beneath the insulating layer of the SeOI substrate; the portion of channel region beneath the insulating layer extends between the portions of the source and drain regions also beneath the insulating layer; and the trench in the channel region extends into the depth of the base substrate beyond the insulating layer. Also, methods for fabricating such memory cells and memory arrays including a plurality of such memory cells.
    Type: Application
    Filed: December 21, 2010
    Publication date: July 14, 2011
    Inventors: CARLOS MAZURE, RICHARD FERRANT
  • Publication number: 20110163369
    Abstract: Nonvolatile memory devices having a low off state leakage current and an excellent data retention time characteristics. The present invention provides a surrounding stacked gate fin field effect transistor nonvolatile memory structure comprising a silicon-on-insulator substrate of a first conductivity type and a fin active region projecting from an upper surface of the insulator. The structure further includes a tunnel oxide layer formed on the fin active region and a first gate electrode disposed on the tunnel oxide layer and upper surface of the insulator. Additionally, the structure includes an oxide/nitride/oxide (ONO) composite layer formed on the first gate electrode, a second gate electrode formed on the ONO composite layer and patterned so as to define a predetermined area of the ONO composite layer. The structure further includes a dielectric spacer formed on a sidewall of the second gate electrode and source/drain regions formed in the fin active region on both sides of the second gate electrode.
    Type: Application
    Filed: September 28, 2010
    Publication date: July 7, 2011
    Applicant: Semiconductor Manufacturing International (Shanghai) Corporation
    Inventors: Deyuan Xiao, Lily Jiang, Gary Chen, Roger Lee
  • Publication number: 20110159646
    Abstract: A TFT includes a zinc oxide (ZnO)-based channel layer having a plurality of semiconductor layers. An uppermost of the plurality of semiconductor layers has a Zn concentration less than that of a lower semiconductor layer to suppress an oxygen vacancy due to plasma. The uppermost semiconductor layer of the channel layer also has a tin (Sn) oxide, a chloride, a fluoride, or the like, which has a relatively stable bonding energy against plasma. The uppermost semiconductor layer is relatively strong against plasma shock and less decomposed when being exposed to plasma, thereby suppressing an increase in carrier concentration.
    Type: Application
    Filed: March 4, 2011
    Publication date: June 30, 2011
    Inventors: Myung-kwan Ryu, Tae-sang Kim, Jang-yeon Kwon, Kyung-bae Park, Kyung-seok Son, Ji-sim Jung
  • Publication number: 20110147754
    Abstract: Disclosed is a thin film transistor including: a gate insulating layer covering a gate electrode; a microcrystalline semiconductor region over the gate insulating layer; a pair of amorphous semiconductor region over the microcrystalline semiconductor; a pair of impurity semiconductor layers over the amorphous semiconductor regions; and wirings over the impurity semiconductor layers. The microcrystalline semiconductor region has a surface having a projection and depression on the gate insulating layer side. The microcrystalline semiconductor region includes a first microcrystalline semiconductor region which is not covered with the amorphous regions and a second microcrystalline semiconductor region which is in contact with the amorphous semiconductor regions. A thickness d1 of the first microcrystalline semiconductor region is smaller than a thickness d2 of the second microcrystalline semiconductor region and d1 is greater than or equal to 30 nm.
    Type: Application
    Filed: December 16, 2010
    Publication date: June 23, 2011
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Toshiyuki ISA, Atsushi HIROSE
  • Publication number: 20110147740
    Abstract: The present invention discloses a thin film transistor (TFT), a method for manufacturing the TFT, and a display substrate using the TFT that may prevent degradation of the characteristics of an oxide semiconductor contained in the TFT by blocking external light from entering a channel region of the oxide semiconductor.
    Type: Application
    Filed: December 23, 2010
    Publication date: June 23, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki-Hun JEONG, Do-Hyun KIM, Dong-Hoon LEE, Kap-Soo YOON, Jae-Ho CHOI, Sung-Hoon YANG, Pil-Sang YUN, Seung-Mi SEO
  • Publication number: 20110149656
    Abstract: Embodiments of the invention pertain to vertical memory structures. Embodiments of the invention describe memory nodes comprising two memory cells on opposing sides of a vertical channel separating a source region and a drain region. Embodiments of the invention may utilize floating gate NAND memory cells, polysilicon diodes, MiM diodes, or MiiM diodes. Embodiments of the invention may be used to form flash memory, RRAM, Memristor RAM, Oxide Ram or OTPROM.
    Type: Application
    Filed: December 23, 2009
    Publication date: June 23, 2011
    Inventors: Sanh D. Tang, Nishant Sinha, John Zahurak
  • Publication number: 20110140196
    Abstract: An embedded bit line structure, in which, a substrate includes an insulator layer having an original top surface and a semiconductor layer on the original top surface of the insulator layer, and a bit line is disposed within the lower portion of the trench along one side of an active area. The bit line includes a first portion and a second portion. The first portion is located within the insulator layer and below the original top surface of the insulator layer. The second portion is disposed on the first portion to electrically connect the semiconductor layer of the active area. An insulator liner is disposed on the first portion of the bit line and between the second portion of the bit line and the semiconductor layer of the substrate opposite the active area for isolation. An STI is disposed within the trench to surround the active area for isolation.
    Type: Application
    Filed: December 10, 2009
    Publication date: June 16, 2011
    Inventors: Shing-Hwa Renn, Cheng-Chih Huang, Yung-Meng Huang
  • Publication number: 20110143504
    Abstract: A method of fabricating a liquid crystal display device includes forming a gate electrode; forming a gate insulator on the gate electrode, an active layer on the gate insulator, and an etch stopper on the active layer; depositing an ohmic contact layer, a first metal layer and a second metal layer on the substrate; etching the ohmic contact layer, and the first and second metal layers to form ohmic contact patterns, and first and second metal patterns including source, drain and pixel electrodes using a single photomask.
    Type: Application
    Filed: February 4, 2011
    Publication date: June 16, 2011
    Inventor: Joon Young YANG
  • Publication number: 20110134698
    Abstract: The invention relates to a flash memory cell having a FET transistor with a floating gate on a semiconductor-on-insulator (SOI) substrate composed of a thin film of semiconductor material separated from a base substrate by an insulating buried oxide (BOX) layer, The transistor has in the thin film, a channel, with two control gates, a front control gate located above the floating gate and separated from it by an inter-gate dielectric, and a back control gate located within the base substrate directly under the insulating (BOX) layer and separated from the channel by only the insulating (BOX) layer. The two control gates are designed to be used in combination to perform a cell programming operation. The invention also relates to a memory array made up of a plurality of memory cells according to the first aspect of the invention, which can be in an array of rows and columns, and a method of fabricating such memory cells and memory arrays.
    Type: Application
    Filed: November 15, 2010
    Publication date: June 9, 2011
    Inventors: Carlos Mazure, Richard Ferrant
  • Publication number: 20110136302
    Abstract: A semiconductor device for high power application in which a novel semiconductor material having high mass productivity is provided. An oxide semiconductor film is formed, and then, first heat treatment is performed on the exposed oxide semiconductor film in order to reduce impurities such as moisture or hydrogen in the oxide semiconductor film. Next, in order to further reduce impurities such as moisture or hydrogen in the oxide semiconductor film, oxygen is added to the oxide semiconductor film by an ion implantation method, an ion doping method, or the like, and after that, second heat treatment is performed on the exposed oxide semiconductor film.
    Type: Application
    Filed: December 1, 2010
    Publication date: June 9, 2011
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Shunpei YAMAZAKI, Junichiro SAKATA, Hiroki OHARA
  • Publication number: 20110136301
    Abstract: A semiconductor device for high power application in which a novel semiconductor material having high mass productivity is provided. An oxide semiconductor film is formed, and then, first heat treatment is performed on the exposed oxide semiconductor film in order to reduce impurities such as moisture or hydrogen in the oxide semiconductor film. Next, in order to further reduce impurities such as moisture or hydrogen in the oxide semiconductor film, oxygen is added to the oxide semiconductor film by an ion implantation method, an ion doping method, or the like, and after that, second heat treatment is performed on the exposed oxide semiconductor film.
    Type: Application
    Filed: December 1, 2010
    Publication date: June 9, 2011
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Shunpei YAMAZAKI, Junichiro SAKATA, Hiroki OHARA
  • Patent number: 7943466
    Abstract: In one embodiment, a semiconductor device is formed having sub-surface charge compensation regions in proximity to channel regions of the device. The charge compensation trenches comprise at least two opposite conductivity type semiconductor layers. A channel connecting region electrically couples the channel region to one of the at least two opposite conductivity type semiconductor layers.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: May 17, 2011
    Assignee: Semiconductor Components Industries, LLC
    Inventors: Shanghui Larry Tu, Gordon M. Grivna
  • Patent number: 7943988
    Abstract: A semiconductor device includes a semiconductor layer of a first conductivity type and a first doping concentration. A first semiconductor region, used as drain, of the first conductivity type has a lower doping concentration than the semiconductor layer and is over the semiconductor layer. A gate dielectric is over the first semiconductor region. A gate electrode over the gate dielectric has a metal-containing center portion and first and second silicon portions on opposite sides of the center portion. A second semiconductor region, used as a channel, of the second conductivity type has a first portion under the first silicon portion and the gate dielectric. A third semiconductor region, used as a source, of the first conductivity type is laterally adjacent to the first portion of the second semiconductor region. The metal-containing center portion, replacing silicon, increases the source to drain breakdown voltage.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: May 17, 2011
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Daniel Pham, Bich-Yen Nguyen
  • Patent number: 7943444
    Abstract: A semiconductor device includes a tube-type channel formed over a semiconductor substrate. The tube-type channel is connected to first and second conductive lines. A bias electrode is formed in the tube-type channel. The bias electrode is connected to the semiconductor substrate. An insulating film is disposed between the tube-type channel and the bias electrode. A surrounding gate electrode is formed over the tube-type channel.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: May 17, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventor: Sung Woong Chung
  • Patent number: 7939863
    Abstract: Analog ICs frequently include circuits which operate over a wide current range. At low currents, low noise is important, while IC space efficiency is important at high currents. A vertically integrated transistor made of a JFET in parallel with an MOS transistor, sharing source and drain diffused regions, and with independent gate control, is disclosed. N-channel and p-channel versions may be integrated into common analog IC flows with no extra process steps, on either monolithic substrates or SOI wafers. pinchoff voltage in the JFET is controlled by photolithographically defined spacing of the gate well regions, and hence exhibits low variability.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: May 10, 2011
    Assignee: Texas Instruments Incorporated
    Inventors: Pinghai Hao, Marie Denison
  • Patent number: 7939386
    Abstract: The present invention relates to an image sensor applied with a device isolation technique for reducing dark signals and a fabrication method thereof. The image sensor includes: a logic unit; and a light collection unit in which a plurality of photodiodes is formed, wherein the photodiodes are isolated from each other by a field ion-implantation region formed under a surface of a substrate and an insulation layer formed on the surface of the substrate.
    Type: Grant
    Filed: March 23, 2009
    Date of Patent: May 10, 2011
    Assignee: Crosstek Capital, LLC
    Inventors: Jae-Young Rim, Ho-Soon Ko
  • Publication number: 20110101302
    Abstract: Methods, materials, systems and apparatus are described for depositing a separated nanotube networks, and fabricating, separated nanotube thin-film transistors and N-type separated nanotube thin-film transistors. In one aspect, a method of depositing a wafer-scale separated nanotube networks includes providing a substrate with a dielectric layer. The method includes cleaning a surface of the wafer substrate to cause the surface to become hydrophilic. The cleaned surface of the wafer substrate is functionalized by applying a solution that includes linker molecules terminated with amine groups. High density, uniform separated nanotubes are assembled over the functionalized surface by applying to the functionalized surface a separated nanotube solution that includes semiconducting nanotubes.
    Type: Application
    Filed: November 5, 2010
    Publication date: May 5, 2011
    Applicant: UNIVERSITY OF SOUTHERN CALIFORNIA
    Inventors: Chongwu Zhou, Chuan Wang, Jialu Zhang, Koungmin Ryu, Alexander Badmaev, Lewis Gomez De Arco
  • Patent number: 7935598
    Abstract: A vertical channel transistor includes a plurality of active pillar patterns extending perpendicularly from the top surface of the substrate toward an upper part. A gate insulating layer is deposited on the side wall of the active pillar pattern and serves as an ion diffusion barrier between the pillar patterns and surrounding lower gate electrodes. The resultant pillar pattern structure is encapsulated with a metal. The resultant pillar pattern is surrounded on all sides by a specified height by a sacrificial layer of Spin-On Dielectric (SOD). The metal layer is etched-back to the height of the sacrificial layer, thus forming the lower gate electrodes. A spacer layer of an insulating mater is deposited surrounding the upper part of the pillar patterns and the sacrificial layer is removed exposing a part of the lower gate electrodes. The exposed gate electrode is etched to facilitate semiconductor integration.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: May 3, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventor: Chun-Hee Lee
  • Patent number: 7923312
    Abstract: A fabricating method of a TFT includes first forming a source on a substrate. Then, a first insulation pattern layer is formed to cover parts of the source and the substrate. The first insulation pattern layer has an opening exposing a part of the source. Thereafter, a gate pattern layer is formed on the first insulation pattern layer. Then, the gate pattern layer and a second insulation pattern layer formed thereon surround the opening. Moreover, a second lateral protection wall is formed on an edge of the gate pattern layer in the opening. Afterwards, a channel layer is formed in the opening and covers the second lateral protection wall and the source. Then, a passivation layer with a contact window is formed on the channel layer and the second insulation pattern layer to expose a portion of the channel layer. Thereafter, a drain is formed on the exposed channel layer.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: April 12, 2011
    Assignee: Au Optronics Corporation
    Inventors: Wei-Hsiang Lo, Hao-Chieh Lee
  • Patent number: 7923311
    Abstract: A semiconductor device having a pair of impurity doped second semiconductor layers, formed on a first semiconductor layer having a channel formation region therein, an outer edge of the first semiconductor film being at least partly coextensive with an outer edge of the impurity doped second semiconductor layers. The semiconductor device further includes source and drain electrodes formed on the pair of impurity doped second semiconductor layers, wherein the pair of impurity doped second semiconductor layers extend beyond inner sides edges of the source and drain electrodes so that a stepped portion is formed from an upper surface of the source and drain electrodes to a surface of the first semiconductor film.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: April 12, 2011
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hongyong Zhang, Naoto Kusumoto
  • Patent number: 7923313
    Abstract: A method of manufacturing a transistor includes providing a substrate including in order an electrically conductive material layer and an electrically insulating material layer; depositing a resist material layer over the electrically insulating material layer; patterning the resist material layer to expose a portion of the electrically insulating material layer; removing the exposed electrically insulating material layer to expose a portion of the electrically conductive material layer; removing the exposed electrically conductive material layer to create a reentrant profile in the electrically conductive material layer and the electrically insulating material layer; conformally coating the substrate and the exposed material layers with a second electrically insulating material layer; conformally coating the second electrically insulating material layer with a semiconductor material layer; and directionally depositing an electrically conductive material layer over the semiconductor material layer.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: April 12, 2011
    Assignee: Eastman Kodak Company
    Inventors: Lee W. Tutt, Shelby F. Nelson
  • Patent number: 7923775
    Abstract: A semiconductor device includes a plurality of trench patterns formed over a substrate; gate insulation layers formed over sidewalls of the trench patterns; gate electrodes formed over the trench patterns; line patterns coupling the gate electrodes; and source and drain regions formed in upper and lower portions of the substrate adjacent to the sidewalls of the trench patterns.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: April 12, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventors: Kwang-Ok Kim, Hye-Ran Kang
  • Patent number: 7910413
    Abstract: A method of manufacturing a fin structure comprises forming a first structure of a first material type on a wafer and forming a buried channel of a second material adjacent sidewalls of the first structure. The second material type is different than the first material type. The structure includes a first structure and a buried channel.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: March 22, 2011
    Assignee: International Business Machines Corporation
    Inventor: Huilong Zhu
  • Patent number: 7902005
    Abstract: A fin-shaped structure is formed from a semiconductor material. The fin-shaped structure is processed to generate a tensile strain within the semiconductor material along a longitudinal direction of the fin.
    Type: Grant
    Filed: November 2, 2007
    Date of Patent: March 8, 2011
    Assignee: Infineon Technologies AG
    Inventors: Chris Stapelmann, Thomas Schulz
  • Patent number: 7897463
    Abstract: A transistor includes first and second pairs of vertically overlaid source/drain regions on a substrate. Respective first and second vertical channel regions extend between the overlaid source/drain regions of respective ones of the first and second pairs of overlaid source/drain regions. Respective first and second insulation regions are disposed between the overlaid source/drain regions of the respective first and second pairs of overlaid source/drain regions and adjacent respective ones of the first and second vertical channel regions. Respective first and second gate insulators are disposed on respective ones of the first and second vertical channel regions. A gate electrode is disposed between the first and second gate insulators. The first and second vertical channel regions may be disposed near adjacent edges of the overlaid source/drain regions.
    Type: Grant
    Filed: January 4, 2010
    Date of Patent: March 1, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Eun-Jung Yun, Sung-Young Lee, Min-Sang Kim, Sung-Min Kim, Hye-Jin Cho
  • Patent number: 7892896
    Abstract: A semiconductor device includes: a substrate; a first junction region and a second junction region formed separately from each other to a certain distance in the substrate; an etch barrier layer formed in the substrate underneath the first junction region; and a plurality of recess channels formed in the substrate between the first junction region and the second junction region.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: February 22, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventor: Sang-Oak Shim
  • Patent number: 7883965
    Abstract: A semiconductor device includes a device isolation structure, a recess channel structure, and a gate electrode. The device isolation structure is formed in a semiconductor substrate to define an active region. The recess channel structure is disposed in the semiconductor substrate under the active region. The gate electrode includes a holding layer disposed in a gate region to fill the recess channel structure. The holding layer prevents a seam and a shift of the seam occurring in the recess channel structure.
    Type: Grant
    Filed: December 30, 2006
    Date of Patent: February 8, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventors: Shin Gyu Choi, Seung Chul Oh
  • Patent number: 7879659
    Abstract: Fin-FET (fin field effect transistor) devices and methods of fabrication are disclosed. The Fin-FET devices include dual fin structures that may form a channel region between a source region and a drain region. In some embodiments, the dual fin structures are formed by forming shallow trench isolation structures, using a pair of shallow trench isolation (STI) structures as a mask to define a recess in a portion of the substrate between the pair of STI structures, and recessing the STI structures so that the resulting dual fin structure protrudes from an active surface of the substrate. The dual fin structure may be used to form single-gate, double-gate or triple-gate fin-FET devices. Electronic systems including such fin-FET devices are also disclosed.
    Type: Grant
    Filed: July 17, 2007
    Date of Patent: February 1, 2011
    Assignee: Micron Technology, Inc.
    Inventors: Aaron R. Wilson, Larson Lindholm, David Hwang
  • Patent number: 7880232
    Abstract: A process may include first etching a trench isolation dielectric through a dielectric hard mask that abuts the sidewall of a fin semiconductor. The first etch can be carried out to expose at least a portion of the sidewall, causing the dielectric hard mask to recede to a greater degree in the lateral direction than the vertical direction. The process may include second etching the fin semiconductor to achieve a thinned semiconductor fin, which has receded beneath the shadow of the laterally receded hard mask. The thinned semiconductor fin may have a characteristic dimension that can exceed photolithography limits. Electronic devices may include the thinned semiconductor fin as part of a field effect transistor.
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: February 1, 2011
    Assignee: Micron Technology, Inc.
    Inventors: Mark Fischer, T. Earl Allen, H. Montgomery Manning
  • Patent number: 7875885
    Abstract: A display element and a method of manufacturing the same are provided. The method comprises the following steps: forming a first patterned conducting layer with a gate on a substrate and a dielectric layer thereon; forming a patterned semiconductor layer on the dielectric layer, wherein the patterned semiconductor layer has a channel region, a source and a drain, and wherein the source and the drain lie on the opposite sides of the channel region; selectively depositing a barrier layer, which only wraps the patterned semiconductor layer; forming a second patterned conducting layer on the barrier layer and above the source and the drain. In the display element manufactured by the method, the barrier layer only wraps the patterned semiconductor layer.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: January 25, 2011
    Assignee: Au Optronics Corp.
    Inventors: Po-Lin Chen, Wen-Ching Tsai, Chun-Nan Lin, Kuo-Yuan Tu
  • Patent number: 7871913
    Abstract: A method for manufacturing a semiconductor device having a vertical transistor includes forming hard masks on a semiconductor substrate to expose portions of the semiconductor substrate. Then the exposed portions of the semiconductor substrate are etched to define grooves in the semiconductor substrate. A gate conductive layer is formed on the hard masks and surfaces of the grooves to a thickness that does not completely fill the grooves. A sacrificial layer is formed on the gate conductive layer to completely fill the grooves. A partial thickness of the sacrificial layer is removed to expose the gate conductive layer and portions of the gate conductive layer formed on the hard masks and on sidewalls of upper portions of the grooves are removed. The remaining sacrificial layer is completely removed. Gates are formed on sidewalls of lower portions of the grooves by etching the gate conductive layer.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: January 18, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventors: Jong Han Shin, Hyung Soon Park, Jum Yong Park, Sung Jun Kim
  • Patent number: 7858478
    Abstract: A method for producing an integrated circuit including a trench transistor and an integrated circuit is disclosed.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: December 28, 2010
    Assignee: Infineon Technologies Austria AG
    Inventor: Franz Hirler
  • Patent number: 7851283
    Abstract: Therefore, disclosed above are embodiments of a multi-fin field effect transistor structure (e.g., a multi-fin dual-gate FET or tri-gate FET) that provides low resistance strapping of the source/drain regions of the fins, while also maintaining low capacitance to the gate by raising the level of the straps above the level of the gate. Embodiments of the structure of the invention incorporate either conductive vias or taller source/drain regions in order to electrically connect the source/drain straps to the source/drain regions of each fin. Also, disclosed are embodiments of associated methods of forming these structures.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: December 14, 2010
    Assignee: International Business Machines Corporation
    Inventors: Brent A. Anderson, Thomas Ludwig, Edward J. Nowak
  • Patent number: 7824969
    Abstract: Disclosed herein is a tunneling fin field effect transistor comprising a fin disposed on a box layer disposed in a wafer; the wafer comprising a silicon substrate and a buried oxide layer. The fin comprises a silicide body that comprises a first silicide region and a second silicide region and forms a short between N and P doped regions. The silicide body is disposed on a surface of the buried oxide layer. A tunneling device disposed between the first silicide region and the second silicide region; the tunneling device comprising a first P-N junction. A gate electrode is further disposed around the fin; the gate electrode comprising a second P-N junction, and a third silicide region; the third silicide region forming a short between N and P doped regions in the gate electrode.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: November 2, 2010
    Assignee: International Business Machines Corporation
    Inventor: Huilong Zhu
  • Patent number: 7820511
    Abstract: Wide bandgap semiconductor devices including normally-off VJFET integrated power switches are described. The power switches can be implemented monolithically or hybridly, and may be integrated with a control circuit built in a single- or multi-chip wide bandgap power semiconductor module. The devices can be used in high-power, temperature-tolerant and radiation-resistant electronics components. Methods of making the devices are also described.
    Type: Grant
    Filed: July 6, 2007
    Date of Patent: October 26, 2010
    Assignee: SemiSouth Laboratories, Inc.
    Inventors: Igor Sankin, Joseph Neil Merrett