Employing Resonant Tunneling Patents (Class 257/25)
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Patent number: 11923598Abstract: A scalable, high-bandwidth connectivity architecture for portable storage devices and memory modules may utilize EHF communication link chip packages mounted in various two-dimensional and three-dimensional configurations on planar surfaces such as printed circuit boards. Multiple electromagnetic communication links between devices distributed on major faces of card-like devices may be provided with respectively aligned pairs of communication units on each device. Adjacent communication units on a printed circuit board may transmit or receive electromagnetic radiation having different polarization, such as linear or elliptical polarization. Power and communication between communication devices may both be provided wirelessly.Type: GrantFiled: December 22, 2021Date of Patent: March 5, 2024Assignee: Molex, LLCInventors: Gary D McCormack, Ian A. Kyles
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Patent number: 11127850Abstract: A semiconductor device includes a first conductivity type semiconductor layer including an active cell portion and an outer peripheral portion around the active cell portion, a second conductivity type body region selectively formed at a surface portion of the semiconductor layer in the active cell portion, a first conductivity type source region formed at an inner part of the body region, a gate electrode that faces a part of the body region through a gate insulating film, a second conductivity type column layer straddling a boundary between the active cell portion and the outer peripheral portion inside the semiconductor layer such that the column layer is disposed at a lower part of the body region in the active cell portion, a source electrode that is electrically connected to the source region, and an outer peripheral electrode that is electrically connected to the column layer in the outer peripheral portion.Type: GrantFiled: January 25, 2018Date of Patent: September 21, 2021Assignee: ROHM CO., LTD.Inventor: Yusuke Kubo
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Patent number: 11061647Abstract: A device for generating a nondeterministic response to a challenge, the device comprising: a structure that exhibits a nondeterministic electrical output response to an electrical input, the device being arranged to facilitate a challenge of the structure to generate the nondeterministic response, by facilitating an electrical measurement of an output of the structure, the nondeterministic response being derivable from that measurement.Type: GrantFiled: July 24, 2017Date of Patent: July 13, 2021Assignee: QUANTUM BASE LIMITEDInventors: Ramon Bernardo Gavito, Robert James Young
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Patent number: 10923335Abstract: Systems and methods for loading microfabricated ion traps are disclosed. Photo-ablation via an ablation pulse is used to generate a flow of atoms from a source material, where the flow is predominantly populated with neutral atoms. As the neutral atoms flow toward the ion trap, two-photon photo-ionization is used to selectively ionize a specific isotope contained in the atom flow. The velocity of the liberated atoms, atom-generation rate, and/or heat load of the source material is controlled by controlling the fluence of the ablation pulse to provide high ion-trapping probability while simultaneously mitigating generation of heat in the ion-trapping system that can preclude cryogenic operation. In some embodiments, the source material is held within an ablation oven comprising an electrically conductive housing that is configured to restrict the flow of agglomerated neutral atoms generated during photo-ablation toward the ion trap.Type: GrantFiled: March 19, 2019Date of Patent: February 16, 2021Assignee: Duke UniversityInventors: Geert Vrijsen, Jungsang Kim, Robert Spivey, Ismail Inlek, Yuhi Aikyo
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Patent number: 10916645Abstract: A compound semiconductor device includes: a compound semiconductor area including, at an upper most portion, a protective layer made of a compound semiconductor; and an ohmic electrode provided on the compound semiconductor area, the ohmic electrode being away from the protective layer in plan view and being not in contact with the protective layer.Type: GrantFiled: November 30, 2018Date of Patent: February 9, 2021Assignee: FUJITSU LIMITEDInventor: Kozo Makiyama
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Patent number: 10854735Abstract: According to another embodiment, a method of forming a transistor is provided. The method includes the following operations: providing a substrate; providing a source over the substrate; providing a channel connected to the source; providing a drain connected to the channel; providing a gate insulator adjacent to the channel; providing a gate adjacent to the gate insulator; providing a first interlayer dielectric between the source and the gate; and providing a second interlayer dielectric between the drain and the gate, wherein at least one of the formation of the source, the drain, and the channel includes about 20-95 atomic percent of Sn.Type: GrantFiled: September 3, 2014Date of Patent: December 1, 2020Assignee: Taiwan Semiconductor Manufacturing Company LimitedInventors: Jean-Pierre Colinge, Carlos H. Diaz
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Patent number: 10733524Abstract: A quantum computing D-state AC-Stark shift gate system comprises at least one gate manipulation source and one or more ions trapped in an ion trap. The at least one gate manipulation source is configured to generate a first gate manipulation signal and a second gate manipulation signal. The first and second gate manipulation signals couple an ion between a set of S-states and a set of D-states. The first and second gate manipulation signals apply a force to an ion of the one or more ions that is dependent on the internal state of the ion. The first and second gate manipulation signals are configured to couple internal states of the ions to their motional state without appreciably altering a population of the ions within the set of S-states.Type: GrantFiled: December 17, 2019Date of Patent: August 4, 2020Assignee: Honeywell International Inc.Inventors: Michael Feig, Jonathon Sedlacek, Mark Kokish, Christopher Langer, John Gaebler, Daniel Stack, Bryce J. Bjork, Grahame Vittorini, David Hayes
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Patent number: 10600761Abstract: A microelectronic assembly including an insulating layer having a plurality of nanoscale conductors disposed in a nanoscale pitch array therein and a pair of microelectronic elements is provided. The nanoscale conductors can form electrical interconnections between contacts of the microelectronic elements while the insulating layer can mechanically couple the microelectronic elements together.Type: GrantFiled: April 9, 2019Date of Patent: March 24, 2020Assignee: Invensas CorporationInventors: Liang Wang, Bongsub Lee, Belgacem Haba, Sangil Lee
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Patent number: 10504882Abstract: Provided are optical devices and systems fabricated, at least in part, via printing-based assembly and integration of device components. In specific embodiments the present invention provides light emitting systems, light collecting systems, light sensing systems and photovoltaic systems comprising printable semiconductor elements, including large area, high performance macroelectronic devices. Optical systems of the present invention comprise semiconductor elements assembled, organized and/or integrated with other device components via printing techniques that exhibit performance characteristics and functionality comparable to single crystalline semiconductor based devices fabricated using conventional high temperature processing methods. Optical systems of the present invention have device geometries and configurations, such as form factors, component densities, and component positions, accessed by printing that provide a range of useful device functionalities.Type: GrantFiled: January 10, 2017Date of Patent: December 10, 2019Assignees: The Board of Trustees of the University of Illinois, X-Celeprint LimitedInventors: John Rogers, Ralph Nuzzo, Matthew Meitl, Etienne Menard, Alfred Baca, Michael Motala, Jong-Hyun Ahn, Sang-Il Park, Chang-Jae Yu, Heung Cho Ko, Mark Stoykovich, Jongseung Yoon
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Patent number: 10461388Abstract: Radio frequency (RF) data transfer between components in rack mounted systems is facilitated through the use of dielectric waveguides and millimeter Wave (mm-Wave) transceivers. A signal generator provides one or more data signals to a serializer/deserializer (SERDES) which serializes a plurality of parallel data signals to produce a single, serialized, signal containing data from each of the input signals to the SERDES. A mm-Wave die upconverts the serialized signal to a mm-Wave signal and a mm-Wave launcher launches the signal into the dielectric waveguide. At the receiving end the process is reversed such that the mm-Wave signal is first downconverted and passed through a SERDES to provide the original one or more signals to a recipient signal generator. Some or all of the components may be formed directly in the semiconductor package.Type: GrantFiled: December 30, 2016Date of Patent: October 29, 2019Assignee: INTEL CORPORATIONInventors: Telesphor Kamgaing, Georgios C. Dogiamis, Sasha N. Oster
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Patent number: 10388375Abstract: A memory cell includes a first resistive memory element, a second resistive memory element electrically coupled with the first resistive memory element at a common node, and a switching element comprising an input terminal electrically coupled with the common node, the switching element comprising a driver configured to float during one or more operations.Type: GrantFiled: April 9, 2018Date of Patent: August 20, 2019Assignee: Hefei Reliance Memory LimitedInventors: Deepak Chandra Sekar, Gary Bela Bronner, Frederick A. Ware
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Patent number: 10381456Abstract: An enhancement-mode High Electron Mobility Transistor (HEMT) includes a substrate, a Group IIIA-N active layer on the substrate, a Group IIIA-N barrier layer on the active layer, and at least one isolation region through the barrier layer to provide an isolated active area having the barrier layer on the active layer. A p-GaN layer is on the barrier layer. A tunnel diode in the gate stack includes an n-GaN layer on an InGaN layer on the p-GaN layer. A gate electrode is over the n-GaN layer. A drain having a drain contact is on the barrier layer to provide contact to the active layer, and a source having a source contact is on the barrier layer provides contact to the active layer. The tunnel diode provides a gate contact to eliminate the need to form a gate contact directly to the p-GaN layer.Type: GrantFiled: May 4, 2017Date of Patent: August 13, 2019Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Chang Soo Suh, Dong Seup Lee, Jungwoo Joh, Naveen Tipirneni, Sameer Prakash Pendharkar
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Patent number: 10304803Abstract: A microelectronic assembly including an insulating layer having a plurality of nanoscale conductors disposed in a nanoscale pitch array therein and a pair of microelectronic elements is provided. The nanoscale conductors can form electrical interconnections between contacts of the microelectronic elements while the insulating layer can mechanically couple the microelectronic elements together.Type: GrantFiled: May 5, 2016Date of Patent: May 28, 2019Assignee: Invensas CorporationInventors: Liang Wang, Bongsub Lee, Belgacem Haba, Sangil Lee
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Patent number: 10122420Abstract: Apparatus and methods are provided for wireless communications between integrated circuits or integrated circuit dies of an electronic system. In an example, an apparatus can include a first integrated circuit die including a plurality of integrated circuit devices, a second integrated circuit die including a second plurality of integrated circuit devices, and a conductor device configured to wirelessly receive a signal from the first integrated circuit die, to conduct the signal from a first end of an electrical conductor of the conductor device to a second end of the electrical conductor, and to wirelessly transmit the signal to the second integrated circuit die from the second end of the electrical conductor.Type: GrantFiled: December 22, 2015Date of Patent: November 6, 2018Assignee: Intel IP CorporationInventors: Thorsten Meyer, Andreas Augustin, Reinhard Golly, Peter Baumgartner
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Patent number: 10026888Abstract: According to one embodiment, a magnetoresistive effect element includes: a first magnetic layer; a second magnetic layer; a non-magnetic film between the first magnetic layer and the second magnetic layer; a first layer on an opposite side of a side of the non-magnetic layer of the first magnetic layer, the first layer including magnesium oxide as a principal component; and a second layer between the first film and the first magnetic layer, the second layer including a material different from a material of the first layer.Type: GrantFiled: March 5, 2015Date of Patent: July 17, 2018Assignee: TOSHIBA MEMORY CORPORATIONInventors: Takao Ochiai, Eiji Kitagawa, Kenji Noma
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Patent number: 9991385Abstract: The present disclosure relates to a semiconductor device that controls a strain on a channel region by forming a dielectric material in recesses, adjacent to a channel region, in order to provide control over a volume and shape of a strain inducing material of epitaxial source/drain regions formed within the recesses. In some embodiments, the semiconductor device has epitaxial source/drain regions arranged in recesses within an upper surface of a semiconductor body on opposing sides of a channel region. A gate structure is arranged over the channel region, and a dielectric material is arranged laterally between the epitaxial source/drain regions and the channel region. The dielectric material consumes some volume of the recesses, thereby reducing a volume of strain inducing material in epitaxial source/drain regions formed in the recesses.Type: GrantFiled: September 15, 2015Date of Patent: June 5, 2018Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.Inventors: Tung-Wen Cheng, Che-Cheng Chang, Mu-Tsang Lin, Bo-Feng Young, Cheng-Yen Yu
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Patent number: 9960183Abstract: A method of manufacturing a semiconductor device including: preparing a substrate in which an insulating layer, a semiconductor layer, and an insulating film are laminated on a semiconductor substrate, and a device isolation region is embedded in a trench. The insulating film in a bulk region is removed; the semiconductor layer in the bulk region is removed; and thereafter the insulating film in the SOI region and the insulating layer in the bulk region are thinned. An impurity is implanted into the semiconductor substrate in the SOI region, and thereafter the insulating film in the SOI region and the insulating layer in the bulk region are removed.Type: GrantFiled: May 24, 2017Date of Patent: May 1, 2018Assignee: Renesas Electronics CorporationInventor: Hideki Makiyama
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Patent number: 9960346Abstract: A magnetic tunnel junction has a conductive first magnetic electrode comprising magnetic recording material. A conductive second magnetic electrode is spaced from the first electrode and comprises magnetic reference material. A non-magnetic tunnel insulator material is between the first and second electrodes. The magnetic recording material of the first electrode comprises a first magnetic region, a second magnetic region spaced from the first magnetic region, and a third magnetic region spaced from the first and second magnetic regions. A first non-magnetic insulator metal oxide-comprising region is between the first and second magnetic regions. A second non-magnetic insulator metal oxide-comprising region is between the second and third magnetic regions. Other embodiments are disclosed.Type: GrantFiled: May 7, 2015Date of Patent: May 1, 2018Assignee: Micron Technology, Inc.Inventors: Jonathan D. Harms, Wei Chen, Sunil S. Murthy, Witold Kula
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Patent number: 9954077Abstract: A method comprises etching away an upper portion of a substrate to form a trench between two adjacent isolation regions, wherein the substrate has a first crystal orientation and is formed of a first semiconductor material, growing a first semiconductor region in the trench over the substrate, wherein the first semiconductor region is formed of a second semiconductor material and an upper portion of the first semiconductor region has a second crystal orientation and growing a second semiconductor region over the first semiconductor region, wherein the second semiconductor region is formed of a third semiconductor material.Type: GrantFiled: August 31, 2015Date of Patent: April 24, 2018Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventor: Georgios Vellianitis
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Patent number: 9871014Abstract: 3D joining of microelectronic components and a conductively self-adjusting anisotropic matrix are provided. In an implementation, an adhesive matrix automatically makes electrical connections between two surfaces that have electrical contacts, and bonds the two surfaces together. Conductive members in the adhesive matrix are aligned to automatically establish electrical connections between at least partially aligned contacts on each of the two surfaces while providing nonconductive adhesion between parts of the two surfaces lacking aligned contacts. An example method includes forming an adhesive matrix between two surfaces to be joined, including conductive members anisotropically aligned in an adhesive medium, then pressing the two surfaces together to automatically connect corresponding electrical contacts that are at least partially aligned on the two surfaces. The adhesive medium in the matrix secures the two surfaces together.Type: GrantFiled: September 6, 2016Date of Patent: January 16, 2018Assignee: Invensas CorporationInventor: Belgacem Haba
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Patent number: 9825348Abstract: A signal transmission system including: a first connector apparatus, and a second connector apparatus that is coupled with the first connector apparatus. The first connector apparatus and the second connector apparatus are coupled together to form an electromagnetic field coupling unit, and a transmission object signal is converted into a radio signal, which is then transmitted through the electromagnetic field coupling unit, between the first connector apparatus and the second connector apparatus.Type: GrantFiled: March 29, 2016Date of Patent: November 21, 2017Assignee: Sony Semiconductor Solutions CorporationInventors: Hidekazu Kikuchi, Takayuki Mogi, Yoshiyuki Akiyama, Hirofumi Kawamura
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Patent number: 9769923Abstract: Interposer circuitry (130) is formed on a possibly sacrificial substrate (210) from a porous core (130?) covered by a conductive coating (130?) which increases electrical conductance. The core is printed from nanoparticle ink. Then a support (120S) is formed, e.g. by molding, to mechanically stabilize the circuitry. A magnetic field can be used to stabilize the circuitry while the circuitry or the support are being formed. Other features are also provided.Type: GrantFiled: December 15, 2016Date of Patent: September 19, 2017Assignee: Invensas CorporationInventors: Bong-Sub Lee, Cyprian Emeka Uzoh, Charles G. Woychik, Liang Wang, Laura Wills Mirkarimi, Arkalgud R. Sitaram
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Patent number: 9716163Abstract: Provided is an electronic device including a semiconductor memory. The semiconductor memory includes first and second selecting elements coupled to a variable resistance element, and each of the first and second selecting elements includes a single-electron transistor.Type: GrantFiled: October 9, 2015Date of Patent: July 25, 2017Assignee: SK HYNIX INC.Inventor: Kyung-Wan Kim
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Patent number: 9704780Abstract: A semiconductor device includes a semiconductor die. A first interconnect structure is disposed over a peripheral region of the semiconductor die. A semiconductor component is disposed over the semiconductor die. The semiconductor component includes a second interconnect structure. The semiconductor component is disposed over the semiconductor die to align the second interconnect structure with the first interconnect structure. The first interconnect structure includes a plurality of interconnection units disposed around first and second adjacent sides of the semiconductor die to form an L-shape border of the interconnection units around the semiconductor die. A third interconnect structure is formed over the semiconductor die perpendicular to the first interconnect structure. An insulating layer is formed over the semiconductor die and first interconnect structure.Type: GrantFiled: September 26, 2013Date of Patent: July 11, 2017Assignee: STATS ChipPAC, Pte. Ltd.Inventors: Pandi C. Marimuthu, Il Kwon Shim, Yaojian Lin, Won Kyoung Choi
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Patent number: 9630849Abstract: A method for transferring a carbon nanotube array is disclosed. The carbon nanotube array has an ability to have a carbon nanotube structure drawn therefrom. The carbon nanotube array is transferred from a growing substrate to a substitute substrate, meanwhile the carbon nanotube array is still configured for drawing the carbon nanotube structure from the substitute substrate. A coating layer is formed on a top end of a carbon nanotube in the carbon nanotube array. The top end is away from the growing substrate. The substitute substrate is placed on the carbon nanotube array and contacted with the coating layer. Thereby the substitute substrate is combined with the carbon nanotube array by the coating layer. The substitute substrate is separated from the growing substrate. Thereby the carbon nanotube array is separated from the growing substrate. A method for making a carbon nanotube structure is also disclosed.Type: GrantFiled: October 22, 2014Date of Patent: April 25, 2017Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Yang Wei, Shou-Shan Fan
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Patent number: 9482477Abstract: A thermal interface material (TIM) using high thermal conductivity nano-particles, particularly ones with large aspect ratios, for enhancing thermal transport across boundary or interfacial layers that exist at bulk material interfaces is disclosed. The nanoparticles do not need to be used in a fluid carrier or as filler material within a bonding adhesive to enhance thermal transport, but simply in a dry solid state. The nanoparticles may be equiaxed or acicular in shape with large aspect ratios like nanorods and nanowires.Type: GrantFiled: July 28, 2014Date of Patent: November 1, 2016Assignee: Northrop Grumman Systems CorporationInventors: John A. Starkovich, Jesse B. Tice, Edward M. Silverman, Hsiao H. Peng
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Patent number: 9417387Abstract: A signal transfer link includes a first plasmonic coupler, and a second plasmonic coupler spaced apart from the first plasmonic coupler to form a gap. An insulator layer is formed over end portions of the first and second plasmonic couplers and in and over the gap. A plasmonic conductive layer is formed over the gap on the insulator layer to excite plasmons to provide signal transmission between the first and second plasmonic couplers.Type: GrantFiled: November 30, 2015Date of Patent: August 16, 2016Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Phaedon Avouris, Vasili Perebeinos, Mathias B. Steiner, Alberto Valdes Garcia
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Patent number: 9335471Abstract: A signal transfer link includes a first plasmonic coupler, and a second plasmonic coupler spaced apart from the first plasmonic coupler to form a gap. An insulator layer is formed over end portions of the first and second plasmonic couplers and in and over the gap. A plasmonic conductive layer is formed over the gap on the insulator layer to excite plasmons to provide signal transmission between the first and second plasmonic couplers.Type: GrantFiled: August 7, 2015Date of Patent: May 10, 2016Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Phaedon Avouris, Vasili Perebeinos, Mathias B. Steiner, Alberto Valdes Garcia
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Patent number: 9331700Abstract: A metal-insulator phase transition (MIT) flip-flop employs a selected one of a pair of bi-stable operating states to represent a logic state of the MIT flip-flop. The MIT flip-flop includes an MIT device having a current-controlled negative differential resistance (CC-NDR) to provide the pair of bi-stable operating states. A bi-stable operating state of the pair is capable of being selected by a programing voltage. Once the bi-stable operating state is selected, the bi-stable operating state is capable of being maintained by a bias voltage applied to the MIT device.Type: GrantFiled: October 28, 2011Date of Patent: May 3, 2016Assignee: Hewlett Packard Enterprise Development LPInventors: Gilberto M. Ribeiro, Matthew D. Pickett
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Patent number: 9274297Abstract: The system (200) provides a photonic waveguide (210) formed on a substrate (220) and a plurality of steering mirrors (230) within the photonic waveguide. The steering mirrors can be configured to direct a light beam (240) between two or more computing components (260). A plurality of steering mirror supports (250) are located within the waveguide having preset locations. The steering mirror supports are configured to enable the steering mirrors to be selectively repositioned at the preset steering mirror supports within the photonic waveguide to create varying configurations. The steering mirrors in the varying configurations direct one or more optical beams to form multiple connectivity channels between computing components within the photonic waveguide.Type: GrantFiled: January 7, 2009Date of Patent: March 1, 2016Assignee: Hewlett Packard Enterprise Development LPInventors: Terrel Morris, Gary Gostin, Eric Peterson
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Patent number: 9252281Abstract: A monolayer or partial monolayer sequencing processing, such as atomic layer deposition (ALD), can be used to form a semiconductor structure of a silicon film on a germanium substrate. Such structures may be useful in high performance electronic devices. A structure may be formed by deposition of a thin silicon layer on a germanium substrate surface, forming a hafnium oxide dielectric layer, and forming a tantalum nitride electrode. The properties of the dielectric may be varied by replacing the hafnium oxide with another dielectric such as zirconium oxide or titanium oxide.Type: GrantFiled: May 28, 2014Date of Patent: February 2, 2016Assignee: Micron Technology, Inc.Inventors: Kie Y. Ahn, Leonard Forbes
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Patent number: 9252329Abstract: Light emitting devices having an enhanced degree of polarization, PD, and methods for fabricating such devices are described. A light emitting device may include a light emitting region that is configured to emit light having a central wavelength, ?, and a degree of polarization, PD, where PD>0.006??b for 200 nm???400 nm, wherein b?1.5.Type: GrantFiled: December 16, 2011Date of Patent: February 2, 2016Assignee: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: John E. Northrup, Christopher Chua, Michael Kneissl, Thomas Wunderer, Noble M. Johnson
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Patent number: 9240421Abstract: A display panel is discloses. A gate line and a gate connection line of an array substrate are disposed perpendicular to each other. A passivation layer is formed on a side of a source electrode or a drain electrode of the array substrate which is close to the color filter substrate. A first via hole is disposed in the passivation layer. A color filter substrate includes a first substrate, and a data line parallel to the gate connection line is formed on a side of the first substrate which is close to the array substrate. A protection layer, a black matrix and a common electrode are sequentially formed on a side of the data line which is close to the array substrate. A second via hole is disposed in a region of the protection layer, the black matrix and the common electrode which corresponds to the data line.Type: GrantFiled: November 27, 2013Date of Patent: January 19, 2016Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Fan Li
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Patent number: 9224847Abstract: A High Electron Mobility Transistor (HEMT) includes a first III-V compound layer having a first band gap, and a second III-V compound layer having a second band gap over the first III-V compound layer. The second band gap is greater than the first band gap. A crystalline interfacial layer is overlying and in contact with the second III-V compound layer. A gate dielectric is over the crystalline interfacial layer. A gate electrode is over the gate dielectric. A source region and a drain region are over the second III-V compound layer, and are on opposite sides of the gate electrode.Type: GrantFiled: July 11, 2014Date of Patent: December 29, 2015Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Han-Chin Chiu, Po-Chun Liu, Chi-Ming Chen, Chung-Yi Yu, King-Yuen Wong
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Patent number: 9184266Abstract: A transistor device having a graphene base for the transport of electrons into a collector is provided. The transistor consists of a heterostructure comprising an electron emitter, an electron collector, and a graphene material base layer consisting of one or more sheets of graphene situated between the emitter and the collector. The transistor also can further include an emitter transition layer at the emitter interface with the base and/or a collector transition layer at the base interface with the collector. The electrons injected into the graphene material base layer can be “hot electrons” having an energy E substantially greater than EF, the Fermi energy in the graphene material base layer or can be “non-hot electrons” having an energy E approximately equal to than EF. The electrons can have the properties of ballistic transit through the base layer.Type: GrantFiled: September 19, 2014Date of Patent: November 10, 2015Assignee: The United States of America, as represented by the Secretary of the NavyInventor: Francis J. Kub
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Patent number: 9134481Abstract: A signal transfer link includes a first plasmonic coupler, and a second plasmonic coupler spaced apart from the first plasmonic coupler to form a gap. An insulator layer is formed over end portions of the first and second plasmonic couplers and in and over the gap. A plasmonic conductive layer is formed over the gap on the insulator layer to excite plasmons to provide signal transmission between the first and second plasmonic couplers.Type: GrantFiled: March 8, 2013Date of Patent: September 15, 2015Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Phaedon Avouris, Vasili Perebeinos, Mathias B. Steiner, Alberto Valdes Garcia
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Patent number: 9117753Abstract: According to one aspect of the inventive concept there is provided a process for manufacturing a semiconductor device, comprising: providing a channel layer (104), providing a mask (106) on the channel layer, epitaxially growing a contact layer (108) in contact with the channel layer, epitaxially growing a support layer (110) on the contact layer, wherein the support layer is arranged to be etched at a higher rate than the contact layer, forming a trench extending through the support layer by removing the mask, and providing a conductor (118) in the trench. There is also provided an intermediate product for the manufacture of a semiconductor device.Type: GrantFiled: June 1, 2012Date of Patent: August 25, 2015Assignee: Acconeer ABInventors: Mikael Egard, Erik Lind, Lars-Erik Wernersson
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Patent number: 9087717Abstract: Device structures, fabrication methods, and design structures for tunnel field-effect transistors. A drain comprised of a first semiconductor material having a first band gap and a source comprised of a second semiconductor material having a second band gap are formed. A tunnel barrier is formed between the source and the drain. The second semiconductor material exhibits a broken-gap energy band alignment with the first semiconductor material. The tunnel barrier is comprised of a third semiconductor material with a third band gap larger than the first band gap and larger than the second band gap. The third band gap is configured to bend under an external bias to assist in aligning a first energy band of the first semiconductor material with a second energy band of the second semiconductor material.Type: GrantFiled: November 26, 2014Date of Patent: July 21, 2015Assignee: International Business Machines CorporationInventors: Douglas M. Daley, Hung H. Tran, Wayne H. Woods, Jr., Ze Zhang
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Patent number: 9059265Abstract: A graphene device having a ribbon structure with soft boundaries formed between two thin parallel transport barriers in a “railroad track” configuration. Such a structure permits transport along the ribbon, and also permits transport of electrons across the barriers by means of resonant tunneling through quasi-bound states within the railroad track confinement. The transport barriers can be of any form of so long as transport through the barriers leads to the formation of isolated resonant bands with a transport gap. In some embodiments, the transport barriers can be in the form of a pair of parallel line defects, wherein the line defects delineate the central ribbon section and the two lateral sections. In some such embodiments, the line defects are chemically decorated by the adsorption of diatomic gases. In other embodiments, the transport barriers can be formed by the application of large local potentials directly to the graphene sheet.Type: GrantFiled: December 6, 2013Date of Patent: June 16, 2015Assignee: The United States of America, as represented by the Secretary of the NavyInventors: L. Daniel Gunlycke, Carter T. White
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Patent number: 9040958Abstract: Transistors, and methods of manufacturing the transistors, include graphene and a material converted from graphene. The transistor may include a channel layer including graphene and a gate insulating layer including a material converted from graphene. The material converted from the graphene may be fluorinated graphene. The channel layer may include a patterned graphene region. The patterned graphene region may be defined by a region converted from graphene. A gate of the transistor may include graphene.Type: GrantFiled: March 11, 2013Date of Patent: May 26, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chang-seung Lee, Yong-sung Kim, Joo-ho Lee, Yong-seok Jung
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Patent number: 8975618Abstract: A resonant tunneling device includes a first semiconductor material with an energy difference between valence and conduction bands of Eg1, and a second semiconductor material with an energy difference between valence and conduction bands of Eg2, wherein Eg1 and Eg2 are different from one another. The device further includes an energy selectively transmissive interface connecting the first and second semiconductor materials.Type: GrantFiled: March 30, 2011Date of Patent: March 10, 2015Assignee: Sharp Kabushiki KaishaInventors: James Andrew Robert Dimmock, Stephen Day, Matthias Kauer, Jonathan Heffernan
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Publication number: 20150041762Abstract: A transistor device having a graphene base for the transport of electrons into a collector is provided. The transistor consists of a heterostructure comprising an electron emitter, an electron collector, and a graphene material base layer consisting of one or more sheets of graphene situated between the emitter and the collector. The transistor also can further include an emitter transition layer at the emitter interface with the base and/or a collector transition layer at the base interface with the collector. The electrons injected into the graphene material base layer can be “hot electrons” having an energy E substantially greater than EF, the Fermi energy in the graphene material base layer or can be “non-hot electrons” having an energy E approximately equal to than EF. The electrons can have the properties of ballistic transit through the base layer.Type: ApplicationFiled: September 19, 2014Publication date: February 12, 2015Applicant: The Government of the United States of America, as represented by the Secretary of the NavyInventor: Francis J. Kub
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Publication number: 20150001469Abstract: Structures include a tunneling device disposed over first and second lattice-mismatched semiconductor materials. Process embodiments include forming tunneling devices over lattice-mismatched materials.Type: ApplicationFiled: September 12, 2014Publication date: January 1, 2015Inventors: Zhiyuan Cheng, Calvin Sheen
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Patent number: 8890119Abstract: Vertically oriented nanowire transistors including semiconductor layers or gate electrodes having compositions that vary over a length of the transistor. In embodiments, transistor channel regions are compositionally graded, or layered along a length of the channel to induce strain, and/or include a high mobility injection layer. In embodiments, a gate electrode stack including a plurality of gate electrode materials is deposited to modulate the gate electrode work function along the gate length.Type: GrantFiled: December 18, 2012Date of Patent: November 18, 2014Assignee: Intel CorporationInventors: Brian S. Doyle, Roza Kotlyar, Uday Shah, Charles C. Kuo
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Patent number: 8890111Abstract: A method for producing an emissive pixel screen includes forming an active pixel matrix along which an electrode forming layer runs and having pixels arranged according to a distribution, forming an anisotropic substrate that includes a set of light emitting diodes constituted by parallel nanowires and arranged in an insulating matrix transversely with respect to a substrate thickness and having a density higher than a density of the pixels irrespective of the pixel distribution, connecting the substrate to the active pixel matrix by connecting only sub-groups of the parallel nanowires by a first end to separate pixel electrodes defined in the electrode forming layer according to the distribution of the pixels in the matrix, and connecting the sub-groups, by another end, to a common electrode, and delimiting the sub-groups by rendering the nanowires of the substrate that are arranged between the sub-groups emissively inactive.Type: GrantFiled: October 19, 2010Date of Patent: November 18, 2014Assignee: Commissariat à l'énergie atomique et aux énergies alternativesInventors: Francois Templier, Laurent Clavelier, Marc Rabarot
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Patent number: 8860160Abstract: Structures include a tunneling device disposed over first and second lattice-mismatched semiconductor materials. Process embodiments include forming tunneling devices over lattice-mismatched materials.Type: GrantFiled: December 17, 2013Date of Patent: October 14, 2014Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Zhiyuan Cheng, Calvin Sheen
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Patent number: 8785910Abstract: A thin film transistor, a display device including the same, and a method of manufacturing the display device, the thin film transistor including a substrate; a gate electrode on the substrate; a gate insulating layer on the gate electrode; a semiconductor layer on the gate insulating layer; and source/drain electrodes electrically connected with the semiconductor layer, wherein the gate electrode has a thickness of about 500 ? to about 1500 ? and the gate insulating layer has a thickness of about 1600 ? to about 2500 ?.Type: GrantFiled: December 2, 2010Date of Patent: July 22, 2014Assignee: Samsung Display Co., Ltd.Inventors: Jong-Hyun Park, Chun-Gi You, Sun Park, Jin-Hee Kang, Yul-Kyu Lee
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Patent number: 8742399Abstract: A quantum dot, which is an ultrafine grain, has a core-shell structure having a core portion and a shell portion protecting the core portion. The surface of the shell portion is covered with two kinds of surfactants, a hole-transporting surfactant and an electron-transporting surfactant, which are concurrently present. Moreover, the hole-transporting surfactant has a HOMO level which tunneling-resonates with the valence band of the quantum dot and the electron-transporting surfactant has a LUMO level which tunneling-resonates with the transfer band of the quantum dot. Thus, a nanograin material which has good carrier transport efficiency and is suitable for use in a photoelectric conversion device is achieved.Type: GrantFiled: March 26, 2012Date of Patent: June 3, 2014Assignee: Murata Manufacturing Co., Ltd.Inventor: Koji Murayama
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Patent number: 8686402Abstract: A TFET includes a source region (110, 210), a drain region (120, 220), a channel region (130, 230) between the source region and the drain region, and a gate region (140, 240) adjacent to the channel region. The source region contains a first compound semiconductor including a first Group III material and a first Group V material, and the channel region contains a second compound semiconductor including a second Group III material and a second Group V material. The drain region may contain a third compound semiconductor including a third Group III material and a third Group V material.Type: GrantFiled: September 2, 2011Date of Patent: April 1, 2014Inventors: Niti Goel, William Tsai, Jack Kavalieros
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Patent number: 8603872Abstract: The field effect device comprises a sacrificial gate electrode having side walls covered by lateral spacers formed on a semiconductor material film. The source/drain electrodes are formed in the semiconductor material film and are arranged on each side of the gate electrode. A diffusion barrier element is implanted through the void left by the sacrificial gate so as to form a modified diffusion area underneath the lateral spacers. The modified diffusion area is an area where the mobility of the doping impurities is reduced compared with the source/drain electrodes.Type: GrantFiled: January 24, 2012Date of Patent: December 10, 2013Assignee: Commissariat a l'Energie Atomique et aux Energies AlternativesInventors: Laurent Grenouillet, Yannick Le Tiec, Nicolas Posseme, Maud Vinet