Using Specific Resistive Material Patents (Class 257/537)
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Patent number: 11257899Abstract: Provided are a film structure including hafnium oxide, an electronic device including the same, and a method of manufacturing the same. The film structure including hafnium oxide includes a hafnium oxide layer including hafnium oxide crystallized in a tetragonal phase, and first and second stressor layers apart from each other with the hafnium oxide layer therebetween and applying compressive stress to the hafnium oxide layer.Type: GrantFiled: June 8, 2020Date of Patent: February 22, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Haeryong Kim, Jungmin Park, Yongsung Kim, Jooho Lee
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Patent number: 11114610Abstract: A semiconductor structure includes an Nth metal layer, a diffusion barrier layer over the Nth metal layer, a first deposition of bottom electrode material over the diffusion barrier layer, a second deposition of bottom electrode material over the first deposition of bottom electrode material, a magnetic tunneling junction (MTJ) layer over the second deposition of bottom electrode material, a top electrode over the MTJ layer; and an (N+1)th metal layer over the top electrode; wherein the diffusion barrier layer and the first deposition of bottom electrode material are laterally in contact with a dielectric layer, the first deposition of bottom electrode material spacing the diffusion barrier layer and the second deposition of bottom electrode material apart, and N is an integer greater than or equal to 1. An associated electrode structure and method are also disclosed.Type: GrantFiled: October 30, 2019Date of Patent: September 7, 2021Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.Inventors: Chung-Yen Chou, Fu-Ting Sung, Yao-Wen Chang, Shih-Chang Liu
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Patent number: 11076826Abstract: It is an aspect of the present disclosure to provide an ultrasound imaging apparatus of transmitting/receiving an ultrasound signal to/from an ultrasound probe, and successively changing inductance using a plurality of inductors for impedance matching between the ultrasound probe and a main body during a transmission/reception time period of the ultrasound signal, and a control method of the ultrasound imaging apparatus. The ultrasound imaging apparatus may include an ultrasound probe; a signal transceiver configured to transmit/receive an ultrasound signal to/from the ultrasound probe; and a variable inductor device configured to successively change inductance for impedance matching with the ultrasound probe during a transmission/reception time period of the ultrasound signal.Type: GrantFiled: April 7, 2017Date of Patent: August 3, 2021Assignee: SAMSUNG MEDISON CO., LTD.Inventors: Nam-Woong Kim, Yong-cheol Hyeon
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Patent number: 10665713Abstract: A silicon carbide semiconductor device includes a silicon carbide semiconductor substrate having an n-type drift layer, and a p-type well region formed in a surface portion of a part of the drift layer, an insulating film provided on the well region, a gate built-in resistor formed of polysilicon in contact with a surface of the insulating film, an interlayer insulating film formed on the gate built-in resistor, a gate contact wire that is connected to a gate pad and formed on the interlayer insulating film, a gate wire provided on the interlayer insulating layer so as to be apart from the gate contact wire, a first gate contact for electrically connecting the gate contact wire and the gate built-in resistor, and a second gate contact for electrically connecting the gate wire and the gate built-in resistor.Type: GrantFiled: July 23, 2018Date of Patent: May 26, 2020Assignee: Mitsubishi Electric CorporationInventors: Takaaki Tominaga, Yasushi Takaki, Yoichiro Tarui, Shiro Hino
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Patent number: 10658453Abstract: A method for manufacturing a thin film resistor (TFR) module in an integrated circuit (IC) structure may include forming a trench in a dielectric region; forming a TFR element in the trench, the TFR element including a laterally-extending TFR region and a TFR ridge extending upwardly from a laterally-extending TFR region; depositing at least one metal layer over the TFR element; and patterning the at least one metal layer and etching the at least one metal layer using a metal etch to define a pair of metal TFR heads over the TFR element, wherein the metal etch also removes at least a portion of the upwardly-extending TFR ridge. The method may also include forming at least one conductive TFR contact extending through the TFR element and in contact with a respective TFR head to thereby increase a conductive path between the respective TFR head and the TFR element.Type: GrantFiled: July 17, 2018Date of Patent: May 19, 2020Assignee: MICROCHIP TECHNOLOGY INCORPORATEDInventors: Justin Hiroki Sato, Yaojian Leng, Greg Stom
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Patent number: 10580874Abstract: A semiconductor device according to the embodiments described herein includes a silicon carbide layer and a silicon oxide layer. The silicon oxide layer is disposed on the silicon carbide layer and contains at least one element selected from a group of phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi). In the silicon oxide layer, at least a part of the at least one element is single bonded to three oxygen atoms and double bonded to one oxygen atom.Type: GrantFiled: September 5, 2017Date of Patent: March 3, 2020Assignee: Kabushiki Kaisha ToshibaInventor: Tatsuo Shimizu
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Patent number: 10381303Abstract: Semiconductor device structures are provided. The semiconductor device structures include a semiconductor substrate. The semiconductor device structures also include an inner metal layer disposed on the semiconductor substrate and a top metal layer disposed on the inner metal layer, wherein the top metal layer has a first portion and a second portion, and wherein the first portion completely covers the inner metal layer, the second portion surrounds the first portion, and the first portion is separated from the second portion. The semiconductor device structures further include a passivation layer disposed on the top metal layer, wherein the passivation layer has a hollowed pattern to expose the top metal layer.Type: GrantFiled: July 1, 2016Date of Patent: August 13, 2019Assignee: Vanguard International Semiconductor CorporationInventors: Ting-You Lin, Chi-Li Tu
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Patent number: 10290403Abstract: Two methods are provided to make aluminum terminal electrodes for chip resistors. For a chip resistor having a high resistance, the structure is not changed but the aluminum terminal electrode must have a high solid content, including a high aluminum content and a high glass content. For porous-aluminum terminal electrodes applied to a chip resistor having a low resistance, a new structure is formed to change current-conducting paths through different sizes of a protecting layer and a resistor layer. Therein, original paths conducting to the resistor layer through front terminal electrodes are changed into new paths conducting to the resistor layer through side terminal electrodes.Type: GrantFiled: December 15, 2016Date of Patent: May 14, 2019Assignee: NATIONAL CHENG KUNG UNIVERSITYInventor: Wen-Hsi Lee
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Patent number: 10247616Abstract: An electronics device includes a power semiconductor device including a temperature detection diode, a first semiconductor integrated circuit device including a detection circuit for detecting VF from the temperature detection diode and a second semiconductor integrated circuit device. The second semiconductor integrated circuit device includes, an outside air temperature acquisition unit which acquires outside air temperature information, a storage which stores temperature characteristic data of the temperature detection diode and a first value based on a signal from the detection circuit at a first temperature and a temperature arithmetic processing unit which calculates a temperature of the power semiconductor device from a third value based on a signal from the detection circuit, the temperature characteristic data, the first temperature acquired by the outside air temperature acquisition unit and the first value.Type: GrantFiled: February 28, 2016Date of Patent: April 2, 2019Assignee: Renesas Electronics CorporationInventor: Makoto Tsurumaru
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Patent number: 10096409Abstract: Provided is a chip resistor having wide and flat end-face electrodes on a surface thereof and having increased connection reliability between upper electrodes and the end-face electrodes.Type: GrantFiled: April 7, 2016Date of Patent: October 9, 2018Assignee: KOA CorporationInventor: Kentaro Matsumoto
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Patent number: 10090812Abstract: One aspect of this disclosure is a power amplifier module that includes a power amplifier die, a first bonding pad on a conductive trace, and a second bonding pad on a conductive trace. The die includes an on-die passive device and a power amplifier. The first bonding pad is electrically connected to the on-die passive device by a first wire bond. The second bonding pad is in a conductive path between the first bonding pad and a radio frequency output of the power amplifier module. The second bonding pad includes a nickel layer having a thickness that is less than 0.5 um, a palladium layer over the nickel layer, and a gold layer over the palladium layer and bonded to a second wire bond that is electrically connected to an output of the power amplifier. Other embodiments of the module are provided along with related methods and components thereof.Type: GrantFiled: April 7, 2017Date of Patent: October 2, 2018Assignee: Skyworks Solutions, Inc.Inventors: Hardik Bhupendra Modi, Sandra Louise Petty-Weeks, Hongxiao Shao, Weimin Sun, Peter J. Zampardi, Jr., Guohao Zhang
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Patent number: 9837795Abstract: An ESD protection device of the present disclosure includes a ceramic multilayer structure inside which a cavity portion is formed, at least one pair of discharge electrodes arranged inside the ceramic multilayer structure, and outer electrodes formed on the surface of the ceramic multilayer structure and connected to the discharge electrodes, wherein the pair of discharge electrodes are arranged in such a way that one end-face of one discharge electrode and one end-face of the other discharge electrode are opposed to each other through the cavity portion, and the cavity portion is formed as a single cavity occupying a region between the opposed end-faces, regions along other end-faces connected to the opposed end-faces via corner portions, and, on first principal surfaces, regions along the opposed end-faces and regions along the other end-faces.Type: GrantFiled: May 28, 2015Date of Patent: December 5, 2017Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Yoshihito Otsubo, Jun Adachi
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Patent number: 9590015Abstract: A vertically integrated reconfigurable and programmable diode/memory resistor (1D1R) and thin film transistor/memory resistor (1T1R) structures built on substrates are disclosed.Type: GrantFiled: November 10, 2014Date of Patent: March 7, 2017Assignee: RUTGERS, THE STATE UNIVERSITY OF NEW JERSEYInventors: Yicheng Lu, Yang Zhang, Chieh-Jen Ku
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Patent number: 9466970Abstract: An ESD protection device having high insulation reliability and excellent discharge characteristics is provided. In an ESD protection device including a first and a second discharge electrode disposed to face each other, a discharge auxiliary electrode (18) formed so as to bridge the first and second discharge electrodes, and an insulating substrate holding the first and second discharge electrodes and the discharge auxiliary electrode (18), the discharge auxiliary electrode (18) is formed of an aggregate of metal grains (24) each having a core-shell structure comprising a core portion (22) primarily formed of a first metal and a shell portion (23) primarily formed of a metal oxide containing a second metal, and the aggregate of metal grains (24) further includes an insulating resin (27) which bonds the metal grains (24) to each other.Type: GrantFiled: February 24, 2015Date of Patent: October 11, 2016Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Takahiro Sumi, Jun Adachi, Takayuki Tsukizawa, Kumiko Ishikawa
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Patent number: 9356114Abstract: A method of forming the heterojunction bipolar transistor that includes providing a stack of a base layer, an extrinsic base layer, a first metal containing layer, and a dielectric cap layer. The dielectric cap layer and the first metal containing layer may be etched to provide a base contact and a dielectric cap. Exposed portions of the base layer may be etched selectively to the dielectric cap. A remaining portion of the base layer provides the base region. A hydrogenated silicon containing layer may be deposited with a low temperature deposition method. At least a portion of the hydrogenated silicon containing layer is formed on at least sidewalls of the base region. A second metal containing layer may be formed on the hydrogenated silicon containing layer. The second metal containing and the hydrogenated silicon containing layer may be etched to provide an emitter region and a collector region.Type: GrantFiled: October 1, 2013Date of Patent: May 31, 2016Assignee: GLOBALFOUNDRIES INC.Inventors: Kevin K. Chan, Bahman Hekmatshoartabari, Tak H. Ning, Davood Shahrjerdi
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Patent number: 9337142Abstract: Provided are a semiconductor device including an oscillator and a manufacturing method thereof, in which cost is low and design flexibility is high. The semiconductor device includes a wiring structure region and an oscillator region. The semiconductor device also includes, in the oscillator region, a metal resistive element as the same layer as a conducting film over uppermost metal wiring in the wiring structure region.Type: GrantFiled: June 29, 2015Date of Patent: May 10, 2016Assignee: Renesas Electronics CorporationInventor: Toshihiko Miyazaki
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Patent number: 9324490Abstract: Apparatus and methods for vector inductors are provided herein. In certain configurations, an apparatus includes a vector inductor comprising a plurality of conductors arranged in a stack and separated from one another by dielectric. The conductors are tightly coupled to one another to provide a relatively high amount of mutual inductance. For example, adjacent conductors in the stack can be mutually coupled with a coupling coefficient k that is at least 0.5, or more particularly, 0.9 or greater. In certain implementations, the conductors are electrically connected in parallel with one another to provide the vector inductor with low resistance. However, tight coupling between the conductors in the stack can result in vector inductor having an overall inductance that is similar to that of a self-inductance of an individual conductor in the stack. The Q-factor of the vector inductor can be increased by the inclusion of additional conductors in the stack.Type: GrantFiled: May 27, 2014Date of Patent: April 26, 2016Assignee: TDK CorporationInventors: Dev V. Gupta, Mehdi Si Moussa, Zhiguo Lai
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Patent number: 9136307Abstract: Memory cells, arrays of memory cells, and methods of forming the same with sealing material on sidewalls thereof are disclosed herein. One example of forming a memory cell includes forming a stack of materials, forming a trench to a first depth in the stack of materials such that a portion of at least one of the active storage element material and the active select device material is exposed on sidewalls of the trench. A sealing material is formed on the exposed portion of the at least one of the active storage element material and the active select device material and the trench is deepened such that a portion of the other of the at least one of the active storage element material and the active select device material is exposed on the sidewalls of the trench.Type: GrantFiled: February 9, 2012Date of Patent: September 15, 2015Assignee: Micron Technology, Inc.Inventor: Fabio Pellizzer
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Patent number: 9112147Abstract: A semiconductor memory device according to an embodiment comprises a semiconductor layer, a variable resistance layer, a sidewall layer, and a buried layer. The semiconductor layer functions as a rectifying device. The variable resistance layer is provided above or below the semiconductor layer and reversibly changes its resistance. The sidewall layer is in contact with a sidewall of the semiconductor layer. The buried layer is embedded in the sidewall layer and is made of material different from that of the sidewall layer. These configurations may adjust the electrical characteristics of the rectifying device to any value.Type: GrantFiled: March 6, 2014Date of Patent: August 18, 2015Assignee: KABUSHIKI KAISHA TOSHIBAInventor: Takeshi Sonehara
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Patent number: 9111609Abstract: The present invention in one embodiment provides a memory device including a first electrode; a second electrode; and a memory cell positioned between the first electrode and the second electrode, the memory cell including a core of a first phase change material and a cladding of a second phase change material, wherein the first phase change material has a lower crystallization temperature than the second phase change material. The present invention also provides methods of forming the above described memory device.Type: GrantFiled: February 2, 2012Date of Patent: August 18, 2015Assignees: International Business Machines Corporation, Qimonda AGInventors: Thomas D. Happ, Alejandro G. Schrott
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Patent number: 9064824Abstract: Methods for packaging a functional chip, methods for annealing a functional chip, and chip assemblies. A functional chip and an annealing chip are located inside a package. The functional chip includes an integrated circuit. The annealing chip includes an annealing element source comprised of an annealing element or a light source configured to emit electromagnetic radiation. The integrated circuit of the functional chip receives the annealing element, electromagnetic radiation, or both from the annealing chip in order to perform an annealing procedure that extends the useful lifetime of the packaged integrated circuit.Type: GrantFiled: November 12, 2013Date of Patent: June 23, 2015Assignee: International Business Machines CorporationInventors: Terence B. Hook, Melanie J. Sherony, Christopher M. Schnabel
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Publication number: 20150137316Abstract: A semiconductor structure includes a substrate and a resistor provided over the substrate. The resistor includes a first material layer, a second material layer, a first contact structure and a second contact structure. The first material layer includes at least one of a metal and a metal compound. The second material layer includes a semiconductor material. The second material layer is provided over the first material layer and includes a first sub-layer and a second sub-layer. The second sub-layer is provided over the first sub-layer. The first sub-layer and the second sub-layer are differently doped. Each of the first contact structure and the second contact structure provides an electrical connection to the second sub-layer of the second material layer.Type: ApplicationFiled: January 22, 2015Publication date: May 21, 2015Inventor: Alexandru Romanescu
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Patent number: 9029984Abstract: A semiconductor substrate assembly is proposed. The semiconductor interposer comprises a substrate having a first surface and a second surface opposite to the first surface, a first conductive pad, a second conductive pad and a conductive pillar. The first conductive pad is formed at a predetermined location of the first surface of the substrate. The second conductive pad is formed at a predetermined location of the second surface of the substrate as compared with the position of the first conductive pad. The conductive pillar is formed in the substrate and contacts with one of the first conductive pad and the second conductive pad.Type: GrantFiled: March 12, 2013Date of Patent: May 12, 2015Assignee: Industrial Technology Research InstituteInventors: Peng-Shu Chen, Min-Lin Lee, Shih-Hsien Wu, Shur-Fen Liu
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Patent number: 9029985Abstract: Films having a comb-like structure of nanocolumns of Sm2O3 embedded in a SrTiO3 formed spontaneously on a substrate surface by pulsed laser deposition. In an embodiment, the nanocolumns had a width of about 20 nm with spaces between nanocolumns of about 10 nm. The films exhibited memristive behavior, and were extremely uniform and tunable. Oxygen deficiencies were located at vertical interfaces between the nanocolumns and the matrix. The substrates may be single-layered or multilayered.Type: GrantFiled: May 20, 2014Date of Patent: May 12, 2015Assignee: Los Alamos National Security, LLCInventors: Judith L. Driscoll, ShinBuhm Lee, Quanxi Jia
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Patent number: 8999808Abstract: A nonvolatile memory element includes a first and a second electrode layers, and a variable resistance layer provided between the first and the second electrode layers and having a resistance value reversibly changing according to application of an electrical pulse, wherein the variable resistance layer includes a first variable resistance layer contacting the first electrode layer and comprising an oxygen-deficient first metal oxide, and a second variable resistance layer contacting the first variable resistance layer and comprising a second metal oxide having a smaller oxygen deficiency than the first metal oxide, and including host layers and an inserted layer between each of adjacent pairs of the host layers, wherein the second metal oxide of the inserted layer has a larger oxygen deficiency than the second metal oxide of the host layer, and the first metal oxide has a larger oxygen deficiency than the second metal oxide of the host layer.Type: GrantFiled: November 18, 2013Date of Patent: April 7, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Satoru Fujii, Takumi Mikawa
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Patent number: 8981347Abstract: A method of forming a memory cell is provided. The method includes forming a steering element pillar having a first stiffness and a sidewall, forming a sidewall collar along at least a portion of the sidewall of the steering element pillar, the sidewall collar having a second stiffness, wherein the second stiffness is greater than the first stiffness, and forming a memory element coupled to the steering element pillar. Numerous other aspects are provided.Type: GrantFiled: February 17, 2014Date of Patent: March 17, 2015Assignee: SanDisk 3D LLCInventor: Scott Brad Herner
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Publication number: 20150069574Abstract: A novel integrated circuit and method thereof are provided. The integrated circuit includes a plurality of first interconnect pads, a plurality of second interconnect pads, a first inter-level dielectric layer, a thin film resistor, and at least two end-caps. The end-caps, which are connectors for the thin film resistor, are positioned at the same level with the plurality of second interconnect pads. Therefore, an electrical connection between the end-caps and the plurality of second interconnect pads can be formed by directly connection of them. An integrated circuit with a thin film resistor can be made in a cost benefit way accordingly, so as to overcome disadvantages mentioned above.Type: ApplicationFiled: September 6, 2013Publication date: March 12, 2015Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.Inventors: Yuan-Tai TSENG, Ming-Chyi LIU, Chung-Yen CHOU, Chia-Shiung TSAI
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Publication number: 20150054131Abstract: A method of forming an on-chip heat sink includes forming a device on a substrate. The method also includes forming a plurality of insulator layers over the device. The method further includes forming a heat sink in at least one of the plurality of insulator layers and proximate to the device. The heat sink includes a reservoir of phase change material having a melting point temperature that is less than an upper limit of a design operating temperature of the chip.Type: ApplicationFiled: October 30, 2014Publication date: February 26, 2015Inventor: Mattias E. DAHLSTROM
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Publication number: 20150008560Abstract: The invention relates to a semiconductor device and a method of manufacturing an electronic device. A first conductive layer (first metal interconnect layer) is deposited. There is an insulating layer (first intermetal dielectric) layer deposited. A resistive layer is deposited on top of the insulating layer and structured in order to serve as a thin film resistor. A second insulating layer (second intermetal dielectric) is then deposited on top of the resistive layer. A first opening is etched into the insulating layers (first and second intermetal dielectric) down to the first conductive layer. A second opening is etched into the insulating layers (first and second intermetal dielectrics) down to the first conductive layer. A cross-sectional plane of the second opening is arranged such that it at least partially overlaps the resistive layer of the thin film resistor in a first direction.Type: ApplicationFiled: September 22, 2014Publication date: January 8, 2015Inventors: Christoph Andreas Othmar DIRNECKER, Leif Christian OLSEN
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Patent number: 8927956Abstract: A resistance type memory device is provided. The resistance type memory device includes a first and a second conductors and a metal oxide layer. The metal oxide layer is disposed between the first and the second conductors, and the resistance type memory device is defined in a first resistivity. The resistance type memory device is defined in a second resistivity after a first pulse voltage is applied to the metal oxide layer. The resistance type memory device is defined in a third resistivity after a second pulse voltage is applied to the metal oxide layer. The second resistivity is greater than the first resistivity, and the first resistivity is greater than the third resistivity.Type: GrantFiled: March 12, 2009Date of Patent: January 6, 2015Assignee: MACRONIX International Co., Ltd.Inventors: Ming-Daou Lee, Chia-Hua Ho, Erh-Kun Lai, Kuang-Yeu Hsieh
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Patent number: 8912518Abstract: Provided are semiconductor devices, such as resistive random access memory (ReRAM) cells, that include current limiting layers formed from doped metal oxides and/or nitrides. These current limiting layers may have resistivities of at least about 1 Ohm-cm. This resistivity level is maintained even when the layers are subjected to strong electrical fields and/or high temperature annealing. In some embodiments, the breakdown voltage of a current limiting layer may be at least about 8V. Some examples of such current limiting layers include titanium oxide doped with niobium, tin oxide doped with antimony, and zinc oxide doped with aluminum. Dopants and base materials may be deposited as separate sub-layers and then redistributed by annealing or may be co-deposited using reactive sputtering or co-sputtering. The high resistivity of the layers allows scaling down the size of the semiconductor devices including these layer while maintaining their performance.Type: GrantFiled: November 8, 2012Date of Patent: December 16, 2014Assignee: Intermolecular, Inc.Inventors: David Chi, Vidyut Gopal, Minh Huu Le, Minh Anh Nguyen, Dipankar Pramanik, Milind Weling
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Publication number: 20140353797Abstract: A semiconductor structure comprising a fuse/resistor structure over a functional layer having a substrate. The fuse/resistor structure includes a via, a first interconnect layer, and a second interconnect layer. The via is over the functional layer and has a first end and a second end vertically opposite the first end, wherein the first end is bounded by a first edge and a second edge opposite the first edge and the second end is bounded by a third edge and a fourth edge opposite the third edge. The first interconnect layer includes a first metal layer running horizontally and contacting the first end and completely extending from the first edge to the second edge. The second interconnect layer includes a second metal layer running horizontally and contacting the second end of the via and extending past the third edge but reaching less than half way to the fourth edge.Type: ApplicationFiled: May 31, 2013Publication date: December 4, 2014Inventors: Mehul D. SHROFF, Douglas M. REBER, Edward O. TRAVIS
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Patent number: 8901704Abstract: An integrated circuit and a manufacturing method thereof are provided. A chip size can be reduced by forming a memory device in which a ferroelectric capacitor region is laminated on a DRAM. The integrated circuit includes a cell array region having a capacitor, a peripheral circuit region, and a ferroelectric capacitor region being formed on an upper layer of the cell array region and the peripheral circuit region, and having a ferroelectric capacitor device.Type: GrantFiled: April 20, 2007Date of Patent: December 2, 2014Assignee: SK Hynix Inc.Inventor: Hee Bok Kang
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Patent number: 8890109Abstract: Provided are resistive random access memory (ReRAM) cells including resistive switching layers and thermally isolating structures for limiting heat dissipation from the switching layers during operation. Thermally isolating structures may be positioned within a stack or adjacent to the stack. For example, a stack may include one or two thermally isolating structures. A thermally isolating structure may directly interface with a switching layer or may be separated by, for example, an electrode. Thermally isolating structures may be formed from materials having a thermal conductivity of less than 1 W/m*K, such as porous silica and mesoporous titanium oxide. A thermally isolating structure positioned in series with a switching layer generally has a resistance less than the low resistance state of the switching layer. A thermally isolating structure positioned adjacent to a switching layer may have a resistance greater than the high resistance state of the switching layer.Type: GrantFiled: December 20, 2012Date of Patent: November 18, 2014Assignees: Intermolecular, Inc., Kabushiki Kaisha Toshiba, SanDisk 3D LLCInventors: Yun Wang, Tony P. Chiang, Tim Minvielle, Takeshi Yamaguchi
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Patent number: 8884401Abstract: Systems and methods are disclosed to form a resistive random access memory (RRAM) by forming a first metal electrode layer; depositing an insulator above the metal electrode layer and etching the insulator to expose one or more metal portions; depositing a Pr1-X CaXMnO3 (PCMO) layer above the insulator and the metal portions, wherein X is between approximately 0.3 and approximately 0.5, to form one or more self-aligned RRAM cells above the first metal electrode; and depositing a second metal electrode layer above the PCMO layer.Type: GrantFiled: May 20, 2013Date of Patent: November 11, 2014Assignee: 4D-S Pty, LtdInventor: Makoto Nagashima
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Patent number: 8860182Abstract: A resistance random access memory device according to an embodiment includes a first electrode, a second electrode and a variable resistance film provided between the first electrode and the second electrode. The second electrode includes material selected from the group consisting of silver, copper, zinc, gold, titanium, nickel, cobalt, tantalum, aluminum, and bismuth, alloys thereof, and silicides thereof. The variable resistance film includes silicon oxynitride. The variable resistance film includes a first resistance change layer having a first nitrogen concentration and a second resistance change layer having a second nitrogen concentration lower than the first nitrogen concentration.Type: GrantFiled: September 6, 2013Date of Patent: October 14, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Riichiro Takaishi, Hidenori Miyagawa, Shosuke Fujii
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Patent number: 8853659Abstract: A switchable electronic device comprises a hole blocking layer and a layer comprising a conductive material between first and second electrodes, wherein the conductivity of the device may be irreversibly switched upon application of a current having a current density of less than or equal to 100 A cm?2 to a conductivity at least 100 times lower than the conductivity of the device before switching. The conductive material is a doped organic material such as doped optionally substituted poly(ethylene dioxythiophene).Type: GrantFiled: May 4, 2010Date of Patent: October 7, 2014Assignee: Cambridge Display Technology LimitedInventors: Neil Greenham, Jianpu Wang
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Patent number: 8841745Abstract: A resistance-change memory device using stress engineering is described, including a first layer including a first conductive electrode, a second layer above the first layer including a resistive-switching element, a third layer above the second layer including a second conductive electrode, where a first stress is created in the switching element at a first interface between the first layer and the second layer upon heating the memory element, and where a second stress is created in the switching element at a second interface between the second layer and the third layer upon the heating. A stress gradient equal to a difference between the first stress and the second stress has an absolute value greater than 50 MPa, and a reset voltage of the memory element has a polarity relative to a common electrical potential that has a sign opposite the stress gradient when applied to the first conductive electrode.Type: GrantFiled: September 15, 2011Date of Patent: September 23, 2014Assignee: Intermolecular, Inc.Inventors: Michael Miller, Prashant Phatak, Tony Chiang
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Publication number: 20140266409Abstract: A semiconductor structure with a high voltage area and a low voltage area includes a substrate of a first conductivity type accommodating the high voltage area and the low voltage area. A resistor is on the substrate, connecting the high voltage area and the low voltage area, and the resistor resides substantially in the high voltage area. The structure further includes a first doped region of the first conductivity type in the substrate between the high voltage area and the low voltage area, and a second doped region of a second conductivity type between the substrate and the first doped region. Moreover, an insulating layer is formed between the resistor and the first doped region.Type: ApplicationFiled: May 30, 2013Publication date: September 18, 2014Inventors: Chen-Yuan Lin, Ching-Lin Chan, Cheng-Chi Lin, Shih-Chin Lien
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Patent number: 8835272Abstract: A resistive switching device and methods for making the same are disclosed. In the above said device, a resistive switching layer is interposed between opposing electrodes. The resistive switching layer comprises at least two sub-layers of switchable insulative material characterized by different ionic mobilities.Type: GrantFiled: February 28, 2013Date of Patent: September 16, 2014Assignee: Sandia CorporationInventors: Patrick R. Mickel, Conrad D. James
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Patent number: 8829649Abstract: A semiconductor device includes a first insulating layer (interlayer insulating layer), a resistive element that is disposed over the first insulating layer (interlayer insulating layer) and at least a surface layer of which is a TaSiN layer, and an interlayer insulating layer disposed over the first insulating layer (interlayer insulating layer) and the resistive element. Multiple via plugs having ends coupled to the TaSiN layer are disposed in the interlayer insulating layer.Type: GrantFiled: November 6, 2012Date of Patent: September 9, 2014Assignee: Renesas Electronics CorporationInventors: Jun Kawahara, Naoya Inoue, Naoya Furutake, Yoshihiro Hayashi
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Patent number: 8823137Abstract: A semiconductor device includes first and second wells formed side by side as impurity diffusion regions of a first conductive type in a semiconductor substrate, below an intermediate dielectric film that covers a major surface of the substrate. A conductive layer formed above the intermediate dielectric film is held at a potential. A first resistive layer is formed on the intermediate dielectric film and is electrically connected to the first well. A second resistive layer is formed on the intermediate dielectric film and is electrically connected to the second well. The first resistive layer and first well form a first resistance element. The second resistive layer and second well form a second resistance element.Type: GrantFiled: June 18, 2013Date of Patent: September 2, 2014Assignee: LAPIS Semiconductor Co., Ltd.Inventors: Hidekazu Kikuchi, Hisao Ohtake, Danya Sugai
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Patent number: 8823138Abstract: A semiconductor structure includes a resistor. The resistor includes a semiconductor region, a dielectric layer, a first electrical connection and a second electrical connection. The dielectric layer is provided on the semiconductor region and includes a high-k material having a greater dielectric constant than silicon dioxide. The dielectric layer includes a species creating fixed charges. A first electrical connection is provided at a first end of the semiconductor region and a second electrical connection is provided at a second end of the semiconductor region.Type: GrantFiled: July 9, 2013Date of Patent: September 2, 2014Assignee: GLOBALFOUNDRIES Inc.Inventors: Matthias Goldbach, Martin Trentzsch
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Patent number: 8816436Abstract: A fin resistor and method of fabrication are disclosed. The fin resistor comprises a plurality of fins arranged in a linear pattern with an alternating pattern of epitaxial regions. An anneal diffuses dopants from the epitaxial regions into the fins. Contacts are connected to endpoint epitaxial regions to allow the resistor to be connected to more complex integrated circuits.Type: GrantFiled: May 16, 2012Date of Patent: August 26, 2014Assignee: International Business Machines CorporationInventors: Kangguo Cheng, Thomas N. Adam, Ali Khakifirooz, Alexander Reznicek
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Patent number: 8779406Abstract: A nonvolatile memory element includes a first electrode, a second electrode, and a variable resistance layer positioned between the first electrode and the second electrode. The variable resistance layer has a resistance state which reversibly changes based on an electrical signal applied between the first electrode and the second electrode. The variable resistance layer includes a first variable resistance layer having a first metal oxide and a second variable resistance layer having a second metal oxide. The second variable resistance layer includes a metal-metal bonding region including a metal bond of metal atoms included in the second metal oxide, and the second metal oxide has a low degree of oxygen deficiency and a high resistance value compared to the first metal oxide.Type: GrantFiled: January 18, 2013Date of Patent: July 15, 2014Assignee: Panasonic CorporationInventors: Satoru Ito, Satoru Fujii, Shinichi Yoneda, Takumi Mikawa
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Publication number: 20140191367Abstract: A method is provided for forming sandwich damascene resistors in MOL processes and the resulting devices. Embodiments include forming on a substrate a film stack including an interlayer dielectric (ILD), a first dielectric layer, and a sacrifice layer (SL); removing a portion of the SL and the first dielectric layer, forming a first cavity; conformally forming a layer of resistive material in the first cavity and over the SL; depositing a second dielectric layer over the layer of resistive material and filling the first cavity; and removing the second dielectric layer, the layer of resistive material not in the first cavity, and at least a partial depth of the SL.Type: ApplicationFiled: January 10, 2013Publication date: July 10, 2014Applicant: GLOBALFOUNDRIES SINGAPORE PTE. LTD.Inventors: Chang Yong XIAO, Roderick Miller, Jie Chen
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Patent number: 8772754Abstract: A method of manufacturing a semiconductor storage device according to an embodiment includes: stacking a first wiring layer; stacking a memory cell layer on the first wiring layer; and stacking a stopper film on the memory cell layer. The method of manufacturing a semiconductor storage device also includes: etching the stopper film, the memory cell layer, and the first wiring layer; polishing an interlayer insulating film to the stopper film after burying the stopper film, the memory cell layer, and the first wiring layer with the interlayer insulating film; performing a nitridation process to the stopper film and the interlayer insulating film to form an adjustment film and a block film on surfaces of the stopper film and the interlayer insulating film, respectively; and forming a second wiring layer on the adjustment film, the second wiring layer being electrically connected to the adjustment film.Type: GrantFiled: February 22, 2012Date of Patent: July 8, 2014Assignee: Kabushiki Kaisha ToshibaInventor: Murato Kawai
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Patent number: 8772906Abstract: Memory cell structures for phase change memory. An example memory cell structure comprising includes a bottom electrode comprised of electrically conducting material, and phase change material disposed above the bottom electrode. A layer of thermally insulating material is disposed, at least partially, between the bottom electrode and the phase change material. The thermally insulating material is comprised of Tantalum Oxide. A top electrode is comprised of electrically conducting material.Type: GrantFiled: July 22, 2013Date of Patent: July 8, 2014Assignee: International Business Machines CorporationInventors: Matthew J. BrightSky, Roger W. Cheek, Chung H. Lam, Eric A. Joseph, Bipin Rajendran, Alejandro G. Schrott, Yu Zhu
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Publication number: 20140183699Abstract: A method of forming an on-chip heat sink includes forming a device on a substrate. The method also includes forming a plurality of insulator layers over the device. The method further includes forming a heat sink in at least one of the plurality of insulator layers and proximate to the device. The heat sink includes a reservoir of phase change material having a melting point temperature that is less than an upper limit of a design operating temperature of the chip.Type: ApplicationFiled: December 31, 2012Publication date: July 3, 2014Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventor: INTERNATIONAL BUSINESS MACHINES CORPORATION
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Patent number: 8749023Abstract: Disclosed are a ReRAM, which is a non-volatile memory device, and a production method therefor. A resistance-variable layer, which varies the resistance in accordance with an applied pulse, has a multilayered structure comprising 3 oxide films. Each oxide film consists of an oxide film of the same type as the neighbouring oxide film(s), but the oxygen ratios in the compositions of neighbouring oxide films differ from each other.Type: GrantFiled: April 8, 2010Date of Patent: June 10, 2014Assignee: Industry-University Cooperation Foundation Hanyang UniversityInventors: Jin Pyo Hong, Young Ho Do, June-Sik Kwak, Yoon Cheol Bae