Selective Epilaxial Growth, E.g., Simultaneous Deposition Of Mono- And Non-mono Semiconductor Material (epo) Patents (Class 257/E21.131)
  • Patent number: 8482073
    Abstract: An integrated circuit including a plurality of Fin field effect transistors (FINFETs) is provided. The integrated circuit includes a plurality of fin-channel bodies over a substrate. The fin-channel bodies include a first fin-channel body and a second fin-channel body. A gate structure is disposed over the fin-channel bodies. At least one first source/drain (S/D) region of a first FINFET is adjacent the first fin-channel body. At least one second source/drain (S/D) region of a second FINFET is adjacent the second fin-channel body. The at least one first S/D region is electrically coupled with the at least one second S/D region. The at least one first and second S/D regions are substantially free from including any fin structure.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: July 9, 2013
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Hung-Ming Chen, Shao-Ming Yu, Chang-Yun Chang
  • Patent number: 8440490
    Abstract: A method for manufacturing a pixel sensor cell that includes a photosensitive element having a non-laterally disposed charge collection region. The method includes forming a trench recess in a substrate of a first conductivity type material, and filling the trench recess with a material having second conductivity type material. The second conductivity type material is then diffused out of the filled trench material to the substrate region surrounding the trench to form the non-laterally disposed charge collection region. The filled trench material is removed to provide a trench recess, and the trench recess is filled with a material having a first conductivity type material. A surface implant layer is formed at either side of the trench having a first conductivity type material. A collection region of a trench-type photosensitive element is formed of the outdiffused second conductivity type material and is isolated from the substrate surface.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: May 14, 2013
    Assignee: International Business Machines Corporation
    Inventors: James W. Adkisson, John J. Ellis-Monaghan, Mark D. Jaffe, Dale J. Pearson, Dennis L. Rogers
  • Publication number: 20130115760
    Abstract: A thin layer structure includes a substrate, a blocking pattern that exposes part of an upper surface of the substrate, and a single crystalline semiconductor layer on the part of the upper surface of the substrate exposed by the pattern and in which all outer surfaces of the single crystalline semiconductor layer have a <100> crystallographic orientation. The thin layer structure is formed by an SEG process in which the temperature is controlled to prevent migration of atoms in directions towards the central portion of the upper surface of the substrate. Thus, sidewall surfaces of the layer will not be constituted by facets.
    Type: Application
    Filed: August 28, 2012
    Publication date: May 9, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: JONG-HOON KANG, BONG-JIN KUH, TAE-GON KIM, HAN-MEI CHOI, KI-CHUL KIM, EUN-YOUNG JO
  • Patent number: 8367528
    Abstract: Methods for selectively depositing high quality epitaxial material include introducing pulses of a silicon-source containing vapor while maintaining a continuous etchant flow. Epitaxial material is deposited on areas of a substrate, such as source and drain recesses. Between pulses, the etchant flow continues such that lower quality epitaxial material may be removed, as well as any non-epitaxial material that may have been deposited. The pulse of silicon-source containing vapor may be repeated until a desired thickness of epitaxial material is selectively achieved in semiconductor windows, such as recessed source/drain regions.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: February 5, 2013
    Assignee: ASM America, Inc.
    Inventors: Matthias Bauer, Shawn G. Thomas
  • Patent number: 8338274
    Abstract: In sophisticated semiconductor devices, an asymmetric transistor configuration may be obtained on the basis of a strain-inducing semiconductor alloy. To this end, strain relaxation implantation processes may be performed at the drain side according to some illustrative embodiments, while, in other cases, the deposition of the strain-inducing alloy may be performed in an asymmetric manner with respect to the drain side and the source side of the transistor.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: December 25, 2012
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Stephan Kronholz, Vassilios Papageorgiou, Gunda Beernink, Jan Hoentschel
  • Patent number: 8338884
    Abstract: A semiconductor device includes a substrate formed of a first semiconductor material; two insulators on the substrate; and a semiconductor region having a portion between the two insulators and over the substrate. The semiconductor region has a bottom surface contacting the substrate and having sloped sidewalls. The semiconductor region is formed of a second semiconductor material different from the first semiconductor material.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: December 25, 2012
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Jing-Cheng Lin, Chen-Hua Yu
  • Patent number: 8329531
    Abstract: In sophisticated semiconductor devices, the initial strain component of a globally strained semiconductor layer may be substantially preserved during the formation of shallow trench isolations by using a rigid mask material, which may efficiently avoid or reduce a deformation of the semiconductor islands upon patterning the isolation trenches. Consequently, selected regions with high internal stress levels may be provided, irrespective of the height-to-length aspect ratio, which may limit the application of globally strained semiconductor layers in conventional approaches. Furthermore, in some illustrative embodiments, active regions of substantially relaxed strain state or of inverse strain type may be provided in addition to the highly strained active regions, thereby enabling an efficient process strategy for forming complementary transistors.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: December 11, 2012
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Jan Hoentschel, Sven Beyer, Uwe Griebenow, Thilo Scheiper
  • Patent number: 8298840
    Abstract: Thin freestanding nitride films are used as a growth substrate to enhance the optical, electrical, mechanical and mobility of nitride based devices and to enable the use of thick transparent conductive oxides. Optoelectronic devices such as LEDs, laser diodes, solar cells, biomedical devices, thermoelectrics, and other optoelectronic devices may be fabricated on the freestanding nitride films. The refractive index of the freestanding nitride films can be controlled via alloy composition. Light guiding or light extraction optical elements may be formed based on freestanding nitride films with or without layers. Dual sided processing is enabled by use of these freestanding nitride films. This enables more efficient output for light emitting devices and more efficient energy conversion for solar cells.
    Type: Grant
    Filed: May 6, 2011
    Date of Patent: October 30, 2012
    Assignee: Goldeneye, Inc.
    Inventors: Scott M. Zimmerman, Karl W. Beeson, William R. Livesay
  • Publication number: 20120267604
    Abstract: Kinked nanowires are used for measuring electrical potentials inside simple cells. An improved intracellular entrance is achieved by modifying the kinked nanowires with phospholipids.
    Type: Application
    Filed: September 24, 2010
    Publication date: October 25, 2012
    Inventors: Bozhi Tian, Ping Xie, Thomas J. Kempa, Charles M. Lieber, Itzhaq Cohen-Karni, Quan Qing, Xiaojie Duan
  • Patent number: 8247301
    Abstract: A substrate having, on a base material, a barrier film for preventing copper diffusion containing one or more metal elements selected from tungsten, molybdenum and niobium, a metal element having a catalytic function in electroless plating such as ruthenium, rhodium, and iridium, and nitrogen contained in the form of a nitride of the aforementioned one or more metal elements selected from tungsten, molybdenum and niobium. The barrier film for preventing copper diffusion is manufactured by sputtering in a nitrogen atmosphere using a target containing one or more metal elements selected from tungsten, molybdenum and niobium and the aforementioned metal element having a catalytic function in electroless plating.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: August 21, 2012
    Assignee: Nippon Mining & Metals Co., Ltd.
    Inventors: Junichi Ito, Atsushi Yabe, Junnosuke Sekiguchi, Toru Imori
  • Patent number: 8178414
    Abstract: An NMOS transistor is formed with improved manufacturability. An embodiment includes forming N-type doped embedded silicon germanium containing carbon (eSiGe:C) in source/drain regions of a substrate, and amorphizing the eSiGe:C. The use of eSiGe:C provides a reduction in extension silicon and dopant loss, improved morphology, increased wafer throughput, improved short channel control, and reduced silicide to source/drain contact resistance.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: May 15, 2012
    Assignee: Globalfoundries Inc.
    Inventors: Bin Yang, Bo Bai
  • Patent number: 8158495
    Abstract: Silicon-based single-crystal portions are produced on a surface of a substrate, selectively in zones where a single-crystal material is initially exposed. To do this, a layer is firstly formed over the entire surface of the substrate, using a silicon precursor of the non-chlorinated hydride type, and under suitable conditions so that the layer is a single-crystal layer in the zones of the substrate where a single-crystal material is initially exposed and amorphous outside these zones. The amorphous portions of the layer are then selectively etched so that only the single-crystal portions of the layer remain on the substrate.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: April 17, 2012
    Assignee: STMicroelectronics S.A.
    Inventors: Didier Dutartre, Laurent Rubaldo, Alexandre Talbot
  • Publication number: 20120068207
    Abstract: Provided is an optical device including a base wafer containing silicon, a plurality of seed crystals disposed on the base wafer, and a plurality of Group 3-5 compound semiconductors lattice-matching or pseudo lattice-matching the plurality of seed crystals. At least one of the Group 3-5 compound semiconductors has a photoelectric semiconductor formed therein, the photoelectric semiconductor including a light emitting semiconductor that emits light in response to a driving current supplied thereto or a light receiving semiconductor that generates a photocurrent in response to light applied thereto, and at least one of the plurality of Group 3-5 compound semiconductors other than the Group 3-5 compound semiconductor having the photoelectric semiconductor has a heterojunction transistor formed therein.
    Type: Application
    Filed: December 2, 2011
    Publication date: March 22, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Masahiko HATA, Sadanori Yamanaka, Tomoyuki Takada
  • Patent number: 8129208
    Abstract: This invention provides a self supporting substrate which consists of a n-type conductive aluminum nitride semiconductor crystal and is useful for manufacturing the vertical conductive type AlN semiconductor device. The n-type conductive aluminum nitride semiconductor crystal, by which the self supporting substrate is made up, contains Si atom at a concentration of 1×1018 to 5×1020 cm?3 is substantially free of halogen atoms and substantially does not absorb the light having the energy of not more than 5.9 eV. The self supporting substrate can be obtained by a method comprising the steps of forming an AlN crystal layer on a single crystal substrate such as a sapphire by the HVPE method, preheating the obtained substrate having the AlN crystal layer to a temperature of 1,200° C. or more, forming a second layer consisting of the n-type conductive aluminum nitride semiconductor crystal is formed on the AlN crystal layer in high rate by the HVPE method and separating the second layer from the obtained laminate.
    Type: Grant
    Filed: February 2, 2008
    Date of Patent: March 6, 2012
    Assignees: Tokuyama Corporation, Tokyo University of Agriculture and Technology
    Inventors: Akinori Koukitu, Yoshinao Kumagai, Toru Nagashima, Kazuya Takada, Hiroyuki Yanagi
  • Patent number: 8119505
    Abstract: A method of making a group III nitride-based compound semiconductor includes providing a semiconductor substrate comprising group III nitride-based compound semiconductor, polishing a surface of said semiconductor substrate such that said polished surface includes an inclined surface that has an off-angle ? of 0.15 degrees or more and 0.6 degrees or less to one of an a-face, a c-face and an m-face of the semiconductor substrate, providing a stripe-shaped specific region on the polished surface, the specific region comprising a material that prevents the growth of the group III nitride-based compound semiconductor on its surface, and growing a semiconductor epitaxial growth layer of group III nitride-based compound semiconductor on the polished surface of the semiconductor substrate.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: February 21, 2012
    Assignees: Toyoda Gosei Co., Ltd., Sumitomo Electric Industries, Ltd.
    Inventor: Ryo Nakamura
  • Patent number: 8115191
    Abstract: A nanostructure comprising germanium, including wires of less than 1 micron in diameter and walls of less than 1 micron in width, in contact with the substrate and extending outward from the substrate is provided along with a method of preparation.
    Type: Grant
    Filed: August 14, 2009
    Date of Patent: February 14, 2012
    Assignee: International Business Machines Corporation
    Inventors: Guy Cohen, Hariklia Deligianni, Qiang Huang, Lubomyr T. Romankiw
  • Patent number: 8110901
    Abstract: Vertical field effect transistor semiconductor structures and methods for fabrication of the vertical field effect transistor semiconductor structures provide an array of semiconductor pillars. Each vertical portion of each semiconductor pillar in the array of semiconductor pillars has a linewidth greater than a separation distance to an adjacent semiconductor pillar. Alternatively, the array may comprise semiconductor pillars with different linewidths, optionally within the context of the foregoing linewidth and separation distance limitations. A method for fabricating the array of semiconductor pillars uses a minimally photolithographically dimensioned pillar mask layer that is annularly augmented with at least one spacer layer prior to being used as an etch mask.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: February 7, 2012
    Assignee: International Business Machines Corporation
    Inventors: Matthew J. Breitwisch, Chung H. Lam, Alejandro G. Schrott
  • Patent number: 8097493
    Abstract: A method of manufacturing semiconductor light emitting elements with improved yield and emission power uses laser lift-off and comprises the steps of forming a semiconductor grown layer formed of a first semiconductor layer, an active layer, and a second semiconductor layer on a first principal surface of a growth substrate; forming a plurality of junction electrodes apart on the second semiconductor layer and forming guide grooves arranged in a lattice to surround each of the junction electrodes in the second semiconductor layer; joining together a support and the semiconductor grown layer via the junction electrodes; projecting a laser to separate the growth substrate; dividing the semiconductor grown layer into respective element regions for the semiconductor light emitting elements; and cutting the support, thereby separating into the semiconductor light emitting elements.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: January 17, 2012
    Assignee: Stanley Electric Co., Ltd.
    Inventors: Noriko Nihei, Tatsuma Saito, Yusuke Yokobayashi
  • Patent number: 8093636
    Abstract: A complementary metal-oxide semiconductor (CMOS) image sensor includes a photodiode, a gate pattern of a transfer transistor contacting one side of the photodiode, a gate pattern of a drive transistor disposed to have a predetermined spacing distance from the gate pattern of the transfer transistor, and a floating diffusion node disposed between the gate pattern of the transfer transistor and the gate pattern of the drive transistor.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: January 10, 2012
    Assignee: Intellectual Ventures II LLC
    Inventor: Dong-Hyuk Park
  • Patent number: 8093082
    Abstract: A method of fabricating a photoelectric device of Group III nitride semiconductor, where the method comprises the steps of: forming a first Group III nitride semiconductor layer on a surface of a temporary substrate; patterning the first Group III nitride semiconductor layer using photolithography and etching processes; forming a second Group III nitride semiconductor layer on the patterned first Group III nitride semiconductor layer; forming a conductive layer on the second Group III nitride semiconductor layer; and releasing the temporary substrate by removing the first Group III nitride semiconductor layer to obtain a composite of the second Group III nitride semiconductor layer and the conductive layer.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: January 10, 2012
    Assignee: Advanced Optoelectronic Technology, Inc.
    Inventors: Shih Cheng Huang, Po Min Tu, Ying Chao Yeh, Wen Yu Lin, Peng Yi Wu, Chih Peng Hsu, Shih Hsiung Chan
  • Patent number: 8084336
    Abstract: An apparatus including a resonator electrode and a second electrode separated from the resonator electrode by a gap having a size that facilitates electron transfer across the gap, wherein the resonator electrode is a resonator electrode mounted for oscillatory motion relative to the second electrode that results in a size of the gap between the resonator electrode and the second electrode being time variable; a feedback circuit configured to convey an electron transfer signal dependent upon electron transfer across the gap as a feedback signal; and a drive electrode adjacent the resonator electrode configured to receive a feedback signal from a feedback circuit configured to provide a time-varying feedback signal dependent upon electron transfer across a gap.
    Type: Grant
    Filed: December 28, 2009
    Date of Patent: December 27, 2011
    Assignee: Nokia Corporation
    Inventors: Richard White, Jani Kivioja
  • Patent number: 8071442
    Abstract: A strain-inducing semiconductor alloy may be formed on the basis of cavities which may have a non-rectangular shape, which may be maintained even during corresponding high temperature treatments by providing an appropriate protection layer, such as a silicon dioxide material. Consequently, a lateral offset of the strain-inducing semiconductor material may be reduced, while nevertheless providing a sufficient thickness of corresponding offset spacers during the cavity etch process, thereby preserving gate electrode integrity. For instance, P-channel transistors may have a silicon/germanium alloy with a hexagonal shape, thereby significantly enhancing the overall strain transfer efficiency.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: December 6, 2011
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Stephan Kronholz, Markus Lenski, Andy Wei, Andreas Ott
  • Patent number: 8062946
    Abstract: A strained-channel transistor structure with lattice-mismatched zone and fabrication method thereof. The transistor structure includes a substrate having a strained channel region, comprising a first semiconductor material with a first natural lattice constant, in a surface, a gate dielectric layer overlying the strained channel region, a gate electrode overlying the gate dielectric layer, and a source region and drain region oppositely adjacent to the strained channel region, with one or both of the source region and drain region comprising a lattice-mismatched zone comprising a second semiconductor material with a second natural lattice constant different from the first natural lattice constant.
    Type: Grant
    Filed: March 30, 2005
    Date of Patent: November 22, 2011
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Yee-Chia Yeo, Chun-Chieh Lin, Wen-Chin Lee, Chenming Hu
  • Patent number: 8043942
    Abstract: Disclosed is a method for producing core-shell nanowires in which an insulating film is previously patterned to block the contacts between nanowire cores and nanowire shells. According to the method, core-shell nanowires whose density and position is controllable can be produced in a simple manner. Further disclosed are nanowires produced by the method and a nanowire device comprising the nanowires. The use of the nanowires leads to an increase in the light emitting/receiving area of the device. Therefore, the device exhibits high luminance/efficiency characteristics.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: October 25, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Eun Kyung Lee, Jai Yong Han, Byoung Lyong Choi, Kyung Sang Cho
  • Patent number: 8039369
    Abstract: There is provided a semiconductor light-emitting element and a method of producing the same including high density and high quality quantum dots emitting light at a wavelength of 1.3 ?m. A semiconductor light-emitting element has a first GaAs layer, a second InAs thin film layer having the plurality of InAs quantum dots formed on the first GaAs layer, a third InGaAs layer formed on the second InAs thin film layer having the plurality of InAs quantum dots, and a fourth GaAs layer formed on the third InGaAs layer, wherein the As source is As2.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: October 18, 2011
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventor: Takeru Amano
  • Patent number: 8039371
    Abstract: A semiconductor-on-insulator hetero-structure and a method for fabricating the semiconductor -on-insulator hetero-structure include a crystalline substrate and a dielectric layer located thereupon having an aperture that exposes the crystalline substrate. The semiconductor-on -insulator hetero-structure and the method for fabricating the semiconductor-on-insulator hetero-structure also include a semiconductor layer of composition different than the crystalline substrate located within the aperture and upon the dielectric layer. A portion of the semiconductor layer located aligned over the aperture includes a defect. A portion of the semiconductor layer located aligned over the dielectric layer does not include a defect. Upon removing the portion of the semiconductor layer located aligned over the aperture a reduced defect semiconductor-on-insulator hetero-structure is formed.
    Type: Grant
    Filed: July 1, 2009
    Date of Patent: October 18, 2011
    Assignee: International Business Machines Corporation
    Inventors: Stephen W. Bedell, Jeehwan Kim, Alexander Reznicek, Devendra K. Sadana
  • Publication number: 20110248334
    Abstract: Methods of fabricating charge storage transistors are described, along with apparatus and systems that include them. In one such method, a pillar of epitaxial silicon is formed. At least first and second charge storage nodes (e.g., floating gates) are formed around the pillar of epitaxial silicon at different levels. A control gate is formed around each of the charge storage nodes. Additional embodiments are also described.
    Type: Application
    Filed: April 9, 2010
    Publication date: October 13, 2011
    Inventors: Gurtej S. Sandhu, Nirmal Ramaswamy
  • Patent number: 8017415
    Abstract: Thin freestanding nitride films are used as a growth substrate to enhance the optical, electrical, mechanical and mobility of nitride based devices and to enable the use of thick transparent conductive oxides. Optoelectronic devices such as LEDs, laser diodes, solar cells, biomedical devices, thermoelectrics, and other optoelectronic devices may be fabricated on the freestanding nitride films. The refractive index of the freestanding nitride films can be controlled via alloy composition. Light guiding or light extraction optical elements may be formed based on freestanding nitride films with or without layers. Dual sided processing is enabled by use of these freestanding nitride films. This enables more efficient output for light emitting devices and more efficient energy conversion for solar cells.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: September 13, 2011
    Assignee: Goldeneye, Inc.
    Inventors: Scott M. Zimmerman, Karl W. Beeson, William R. Livesay
  • Patent number: 7968361
    Abstract: A method for producing a gallium nitride based compound semiconductor light emitting device which is excellent in terms of the light emitting properties and the light emission efficiency and a lamp is provided. In such a method for producing a gallium nitride based compound semiconductor light emitting device, which is a method for producing a GaN based semiconductor light emitting device having at least a buffer layer, an n-type semiconductor layer, a light emitting layer, and a p-type semiconductor layer on a translucent substrate, on which an uneven pattern composed of a convex shape and a concave shape is formed, the buffer layer is formed by a sputtering method conducted in an apparatus having a pivoted magnetron magnetic circuit and the buffer layer contains AlN, ZnO, Mg, or Hf.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: June 28, 2011
    Assignee: Showa Denko K.K.
    Inventors: Hiroshi Osawa, Hironao Shinohara
  • Publication number: 20110147828
    Abstract: Embodiments of the present invention describe a epitaxial region on a semiconductor device. In one embodiment, the epitaxial region is deposited onto a substrate via cyclical deposition-etch process. Cavities created underneath the spacer during the cyclical deposition-etch process are backfilled by an epitaxial cap layer. The epitaxial region and epitaxial cap layer improves electron mobility at the channel region, reduces short channel effects and decreases parasitic resistance.
    Type: Application
    Filed: December 21, 2009
    Publication date: June 23, 2011
    Inventors: Anand S. Murthy, Daniel Bourne Aubertine, Tahir Ghani, Abhijit Javant Pethe
  • Publication number: 20110133189
    Abstract: An NMOS transistor is formed with improved manufacturability. An embodiment includes forming N-type doped embedded silicon germanium containing carbon (eSiGe:C) in source/drain regions of a substrate, and amorphizing the eSiGe:C. The use of eSiGe:C provides a reduction in extension silicon and dopant loss, improved morphology, increased wafer throughput, improved short channel control, and reduced silicide to source/drain contact resistance.
    Type: Application
    Filed: December 7, 2009
    Publication date: June 9, 2011
    Applicant: GLOBALFOUNDRIES Inc.
    Inventors: Bin Yang, Bo Bai
  • Publication number: 20110117732
    Abstract: Methods for selectively depositing high quality epitaxial material include introducing pulses of a silicon-source containing vapor while maintaining a continuous etchant flow. Epitaxial material is deposited on areas of a substrate, such as source and drain recesses. Between pulses, the etchant flow continues such that lower quality epitaxial material may be removed, as well as any non-epitaxial material that may have been deposited. The pulse of silicon-source containing vapor may be repeated until a desired thickness of epitaxial material is selectively achieved in semiconductor windows, such as recessed source/drain regions.
    Type: Application
    Filed: November 17, 2009
    Publication date: May 19, 2011
    Applicant: ASM America, Inc.
    Inventors: Matthias Bauer, Shawn G. Thomas
  • Patent number: 7927905
    Abstract: A stress-engineered microspring is formed generally in the plane of a substrate. A nanowire (or equivalently, a nanotube) is formed at the tip thereof, also in the plane of the substrate. Once formed, the length of the nanowire may be defined, for example photolithographically. A sacrificial layer underlying the microspring may then be removed, allowing the engineered stresses in the microspring to cause the structure to bend out of plane, elevating the nanowire off the substrate and out of plane. Use of the nanowire as a contact is thereby provided. The nanowire may be clamped at the tip of the microspring for added robustness. The nanowire may be coated during the formation process to provide additional functionality of the final device.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: April 19, 2011
    Assignee: Palo Alto Research Center Incorporated
    Inventors: Eugene Michael Chow, Pengfei Qi
  • Patent number: 7927954
    Abstract: A method for fabricating strained-silicon transistors is disclosed. First, a semiconductor substrate is provided and a gate structure and a spacer surrounding the gate structure are disposed on the semiconductor substrate. A source/drain region is then formed in the semiconductor substrate around the spacer, and a first rapid thermal annealing process is performed to activate the dopants within the source/drain region. An etching process is performed to form a recess around the gate structure and a selective epitaxial growth process is performed to form an epitaxial layer in the recess. A second rapid thermal annealing process is performed to redefine the distribution of the dopants within the source/drain region and repair the damaged bonds of the dopants.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: April 19, 2011
    Assignee: United Microelectronics Corp.
    Inventors: Shyh-Fann Ting, Cheng-Tung Huang, Li-Shian Jeng, Kun-Hsien Lee, Wen-Han Hung, Tzyy-Ming Cheng, Meng-Yi Wu, Tsai-Fu Hsiao, Shu-Yen Chan
  • Patent number: 7923340
    Abstract: The invention, in one aspect, provides a method for fabricating a semiconductor device. In one aspect, the method provides for a dual implantation of a tub of a bipolar transistor. The tub in bipolar region is implanted by implanting the tub through separate implant masks that are also used to implant tubs associated with MOS fabricate different voltage devices in a non-bipolar region during the fabrication of MOS transistors.
    Type: Grant
    Filed: February 14, 2007
    Date of Patent: April 12, 2011
    Assignee: Agere Systems Inc.
    Inventors: Alan S. Chen, Mark Dyson, Nace M. Rossi, Ranbir Singh, Xiaojun Yuan
  • Patent number: 7915747
    Abstract: A substrate for forming a semiconductor layer includes a plurality of linear convexes or grooves on a surface of the substrate by crystal growth. The plurality of linear convexes or grooves are formed along a direction of a cleavage plane of the semiconductor layer.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: March 29, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Keiichi Matsushita
  • Patent number: 7910462
    Abstract: An assembly and method of making the same wherein the assembly incorporates a rare-earth oxide film to form a [110] crystal lattice orientation semiconductor film. The assembly comprises a substrate, a rare-earth oxide film formed on the substrate, and a [110]-oriented semiconductor film formed on the rare-earth oxide film. The rare-earth oxide film having a [110] crystal lattice orientation. The substrate has a [001] crystal lattice orientation.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: March 22, 2011
    Assignee: Intel Corporation
    Inventor: Maxim B. Kelman
  • Patent number: 7911035
    Abstract: Nanowhiskers are grown in a non-preferential growth direction by regulation of nucleation conditions to inhibit growth in a preferential direction. In a preferred implementation, <001> III-V semiconductor nanowhiskers are grown on an (001) III-V semiconductor substrate surface by effectively inhibiting growth in the preferential <111>B direction. As one example, <001> InP nano-wires were grown by metal-organic vapor phase epitaxy directly on (001) InP substrates. Characterization by scanning electron microscopy and transmission electron microscopy revealed wires with nearly square cross sections and a perfect zincblende crystalline structure that is free of stacking faults.
    Type: Grant
    Filed: January 4, 2008
    Date of Patent: March 22, 2011
    Assignee: QuNano AB
    Inventors: Werner Seifert, Lars Ivar Samuelson, Björn Jonas Ohlsson, Lars Magnus Borgström
  • Patent number: 7897490
    Abstract: In a method for making a GaN article, an epitaxial nitride layer is deposited on a single-crystal substrate. A 3D nucleation GaN layer is grown on the epitaxial nitride layer by HVPE under a substantially 3D growth mode. A GaN transitional layer is grown on the 3D nucleation layer by HVPE under a condition that changes the growth mode from the substantially 3D growth mode to a substantially 2D growth mode. A bulk GaN layer is grown on the transitional layer by HVPE under the substantially 2D growth mode. A polycrystalline GaN layer is grown on the bulk GaN layer to form a GaN/substrate bi-layer. The GaN/substrate bi-layer may be cooled from the growth temperature to an ambient temperature, wherein GaN material cracks laterally and separates from the substrate, forming a free-standing article.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: March 1, 2011
    Assignee: Kyma Technologies, Inc.
    Inventors: Edward A. Preble, Lianghong Liu, Andrew D. Hanser, N. Mark Williams, Xueping Xu
  • Patent number: 7893493
    Abstract: An intermediate hybrid surface orientation structure may include a silicon-on-insulator (SOI) substrate adhered to a bulk silicon substrate, the silicon of the SOI substrate having a different surface orientation than that of the bulk silicon substrate, and a reachthrough region extending through the SOI substrate to the bulk silicon substrate, the reachthrough region including a silicon nitride liner over a silicon oxide liner and a silicon epitaxially grown from the bulk silicon substrate, the epitaxially grown silicon extending into an undercut into the silicon oxide liner under the silicon nitride liner, wherein the epitaxially grown silicon is substantially stacking fault free.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: February 22, 2011
    Assignees: International Business Machines Corproation, Advanced Micro Devices, Inc.
    Inventors: Yun-Yu Wang, Linda Black, Judson R. Holt, Woo-Hyeong Lee, Scott Luning, Christopher D. Sheraw
  • Patent number: 7875491
    Abstract: A complementary metal-oxide-semiconductor image sensor may include: a semiconductor substrate; a photodiode formed on a first portion of the semiconductor substrate; a transfer gate formed on the semiconductor substrate, near the photodiode, to transfer optical charges accumulated in the photodiode; a floating diffusion area formed on a second portion of the semiconductor substrate, on an opposite side of the transfer gate from the photodiode, to accommodate the optical charges; and/or a channel area formed under the transfer gate and contacting a side of the photodiode to transfer the optical charges. The transfer gate may be formed, at least in part, of transparent material. A method of manufacturing a complimentary metal-oxide-semiconductor image sensor may include: forming the photodiode; forming the floating diffusion area, separate from the photodiode; and/or forming the transfer gate, near the photodiode, to transfer optical charges accumulated in the photodiode.
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: January 25, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Doo-cheol Park, Jung-hyeon Kim, Jun-young Lee
  • Patent number: 7867864
    Abstract: The invention relates to a method of manufacturing a semiconductor device comprising a field effect transistor, in which method a semiconductor body of silicon with a substrate is provided at a surface thereof with a source region and a drain region of a first conductivity type which are situated above a buried isolation region and with a channel region, between the source and drain regions, of a second conductivity type, opposite to the first conductivity type, and with a gate region separated from the surface of the semiconductor body by a gate dielectric and situated above the channel region, wherein a mesa is formed in the semiconductor body in which the channel region is formed and wherein the source and drain regions are formed on both sides of the mesa in a semiconductor region that is formed using epitaxial growth, the source and drain regions thereby contacting the channel region.
    Type: Grant
    Filed: January 4, 2007
    Date of Patent: January 11, 2011
    Assignee: NXP B.V.
    Inventors: Sebastien Nuttinck, Giberto Curatola, Erwin Hijzen, Philippe Meunier-Beillard
  • Patent number: 7863167
    Abstract: Made available is a Group III nitride crystal manufacturing method whereby incidence of cracking in the III-nitride crystal when the III-nitride substrate is removed is kept to a minimum. III nitride crystal manufacturing method provided with: a step of growing, onto one principal face (10m) of a III-nitride substrate (10), III-nitride crystal (20) at least either whose constituent-atom type and ratios, or whose dopant type and concentration, differ from those of the III-nitride substrate (10); and a step of removing the III-nitride substrate (10) by vapor-phase etching.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: January 4, 2011
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Fumitaka Sato, Seiji Nakahata
  • Patent number: 7833883
    Abstract: A precursor gas mixture for depositing an epitaxial carbon-doped silicon film is described. The precursor gas mixture is comprised of a volume of a silicon precursor gas, a volume of acetylene gas and a volume of a carrier gas. A method of forming a semiconductor structure having an epitaxial carbon-doped silicon film is also described. In the method, a substrate having a high polarity dielectric region and a low polarity crystalline region is provided. A precursor gas is flowed to provide a silyl surface above the high polarity dielectric region and a carbon-doped silicon layer above the low polarity crystalline region. The silyl surface is then removed from above the high polarity dielectric region. The flowing and removing steps are repeated to provide a carbon-doped silicon film of a desired thickness above the low polarity crystalline region.
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: November 16, 2010
    Assignee: Intel Corporation
    Inventors: Danielle M. Simonelli, Anand S. Murthy, Daniel B. Aubertine
  • Patent number: 7816157
    Abstract: The invention discloses a method of producing on a substrate a semiconductor optical device having a laser diode and an EA optical modulator. An etched side face of a first semiconductor portion is formed. Then, for example, a first optical confinement layer and an active layer both for the EA optical modulator are grown by the metal organic vapor phase epitaxy method. The first optical confinement layer is grown by supplying hydrogen chloride in addition to a material gas. When the first optical confinement layer is grown, the formation of a thick semiconductor layer along the etched side face, which is an abnormally grown semiconductor layer, is decreased. Subsequently, the active layer for the EA optical modulator is grown. This method can suppress the active layer for the EA optical modulator from bending caused by the abnormally grown semiconductor layer.
    Type: Grant
    Filed: February 3, 2009
    Date of Patent: October 19, 2010
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Tomokazu Katsuyama
  • Patent number: 7807535
    Abstract: The invention includes methods of forming layers comprising epitaxial silicon. In one implementation, an opening is formed within a first material received over a monocrystalline material. Opposing walls, of a second material, are formed within the opening which are laterally displaced inwardly of the opposing sidewalls, a space being received between the opposing walls and the opposing sidewalls, with monocrystalline material being exposed between the opposing walls within the opening. A silicon-comprising layer is epitaxially grown from the exposed monocrystalline material within the second material-lined opening. Other aspects and implementations are contemplated.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: October 5, 2010
    Assignee: Micron Technology, Inc.
    Inventors: Nirmal Ramaswamy, Gurtej S. Sandhu, Chris M. Carlson, F. Daniel Gealy
  • Patent number: 7781290
    Abstract: A complementary metal-oxide semiconductor (CMOS) device includes an NMOS thin body channel including a silicon epitaxial layer. An NMOS insulating layer is formed on a surface of the NMOS thin body channel and surrounds the NMOS thin body channel. An NMOS metal gate is formed on the NMOS insulating layer. The CMOS device further includes a p-channel metal-oxide semiconductor (PMOS) transistor including a PMOS thin body channel including a silicon epitaxial layer. A PMOS insulating layer is formed on a surface of and surrounds the PMOS thin body channel. A PMOS metal gate is formed on the PMOS insulating layer. The NMOS insulating layer includes a silicon oxide layer and the PMOS insulating layer includes an electron-trapping layer, the NMOS insulating layer includes a hole trapping dielectric layer and the PMOS insulating layer includes a silicon oxide layer, or the NMOS insulating layer includes a hole-trapping dielectric layer and the PMOS insulating layer includes an electron-trapping dielectric layer.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: August 24, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-young Lee, Sung-min Kim, Sung-dae Suk, Eun-jung Yun
  • Publication number: 20100210084
    Abstract: Methods for forming a semiconductor device comprising a silicon-comprising substrate are provided. One exemplary method comprises depositing a polysilicon layer overlying the silicon-comprising substrate, amorphizing the polysilicon layer, etching the amorphized polysilicon layer to form a gate electrode, etching recesses into the substrate using the gate electrode as an etch mask, depositing a stress-inducing layer overlying the gate electrode, annealing the silicon-comprising substrate to recrystallize the gate electrode, removing the stress-inducing layer, and epitaxially growing impurity-doped, silicon-comprising regions in the recesses.
    Type: Application
    Filed: April 30, 2010
    Publication date: August 19, 2010
    Applicant: ADVANCED MICRO DEVICES, INC.
    Inventors: Frank Bin YANG, Rohit PAL, Michael J. HARGROVE
  • Patent number: 7768015
    Abstract: A pixel structure of a display panel is provided. The pixel structure includes a first storage capacitor formed by a pixel electrode and a common electrode pattern, and a second storage capacitor formed by an electrode pattern and the common electrode pattern. Accordingly, the storage capacitance is greatly improved without sacrificing the aperture ratio, or the aperture ratio is improved by reducing the area of the storage capacitor while the storage capacitance is maintained.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: August 3, 2010
    Assignee: AU Optronics Corp.
    Inventors: Te-Chun Huang, Kuo-Yu Huang, Hsiang-Lin Lin
  • Patent number: 7763485
    Abstract: A method for etching facets of a laser die prior to coating in such a way as to control the formation of oxides and metallic films on the facet is disclosed. In one embodiment, the method includes placing a wafer on which the laser is included in the interior volume of an etching chamber. Nitrogen is introduced into the interior volume to define a nitrogen-rich environment. The laser facet is then etched in the nitrogen-rich environment with argon delivered from an ion gun. In another embodiment, the method includes placing the laser in an ion beam etching chamber, then physically etching the facet of the laser with an ion beam that includes an argon/nitrogen mixture. The laser facet(s) can then be coated as desired. The etching method reduces the incidence of leakage current during operation of the laser die caused by metallic film formation on the facet before coating.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: July 27, 2010
    Assignee: Finisar Corporation
    Inventors: Roman Dimitrov, Ashish Verma, Tsurugi Sudo, Scott Lehmann