Resistor Patents (Class 438/382)
  • Publication number: 20140170831
    Abstract: A phase change memory cell and a method for fabricating the phase change memory cell. The phase change memory cell includes a bottom electrode and a first non-conductive layer. The first non-conductive layer defines a first well, a first electrically conductive liner lines the first well, and the first well is filled with a phase change material in the phase change memory cell.
    Type: Application
    Filed: August 5, 2013
    Publication date: June 19, 2014
    Applicant: International Business Machines Corporation
    Inventors: Matthew J. BrightSky, Chung H. Lam, Jing Li, Alejandro G. Schrott, Norma E. Sosa Cortes
  • Patent number: 8753949
    Abstract: A method of forming a nonvolatile memory cell includes forming a first electrode having a first current conductive material and a circumferentially self-aligned second current conductive material projecting elevationally outward from the first current conductive material. The second current conductive material is different in composition from the first current conductive material. A programmable region is formed over the first current conductive material and over the projecting second current conductive material of the first electrode. A second electrode is formed over the programmable region. In one embodiment, the programmable region is ion conductive material, and at least one of the first and second electrodes has an electrochemically active surface directly against the ion conductive material. Other method and structural aspects are disclosed.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: June 17, 2014
    Assignee: Micron Technology, Inc.
    Inventors: D. V. Nirmal Ramaswamy, Gurtej S. Sandhu
  • Patent number: 8754392
    Abstract: One embodiment of the disclosure can provide a storage layer of a resistive memory element comprising a resistance changeable material. The resistance changeable material can include carbon. Contact layers can be provided for contacting the storage layer. The storage layer can be disposed between a bottom contact layer and a top contact layer. The resistance changeable material can be annealed at a predetermined temperature over a predetermined annealing time for rearranging an atomic order of the resistance changeable material.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: June 17, 2014
    Assignee: International Business Machines Corporation
    Inventors: Daniele Caimi, Evangelos S. Eleftheriou, Charalampos Pozidis, Christophe P. Rossel, Abu Sebastian
  • Patent number: 8754394
    Abstract: A variable resistive memory device includes a bit line, a word line, first electrodes and second electrodes, which are respectively arrayed in different directions, wherein a unit cell including a variable resistive material layer interposed between the first electrode and the second electrode is located at every intersection between the first electrode and the second electrode.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: June 17, 2014
    Assignee: SK Hynix Inc.
    Inventors: Jae-Yun Yi, Seok-Pyo Song
  • Publication number: 20140158966
    Abstract: A method for fabricating a variable resistance memory device includes: forming a first metal oxide layer over a first electrode; performing a first implantation process using a first element to a first depth of the first metal oxide layer so as to reduce at least a portion of the first metal oxide layer and form a first oxygen-deficient metal oxide layer; forming a second electrode over the first metal oxide layer; forming a second metal oxide layer over the second electrode; performing a second implantation process using a second element to a second depth of the second metal oxide layer so as to reduce at least a portion of the second metal oxide layer and form a second oxygen-deficient metal oxide layer; and forming a third electrode over the second metal oxide layer.
    Type: Application
    Filed: March 18, 2013
    Publication date: June 12, 2014
    Applicant: SK HYNIX INC.
    Inventor: Wan-Gee KIM
  • Publication number: 20140158968
    Abstract: A method for forming a non-volatile memory device includes disposing a junction layer comprising a doped silicon-bearing material in electrical contact with a first conductive material, forming a switching layer comprising an undoped amorphous silicon-bearing material upon at least a portion of the junction layer, disposing a layer comprising a non-noble metal material upon at least a portion of the switching layer, disposing an active metal layer comprising a noble metal material upon at least a portion of the layer, and forming a second conductive material in electrical contact with the active metal layer.
    Type: Application
    Filed: September 23, 2013
    Publication date: June 12, 2014
    Applicant: Crossbar, Inc.
    Inventors: Sung Hyun JO, Kuk-Hwan KIM, Tanmay KUMAR
  • Publication number: 20140159204
    Abstract: Embodiments of the present invention provide an array substrate, a fabrication method thereof and a display device. The array substrate comprises a driver IC and pixel units, wherein each port of the driver IC is connected to a plurality of pixel units through a connecting structure, each connecting structure comprises a connecting line connected between a port of the driver IC and a plurality of pixel units, at least some of the connecting structures also comprise resistance regulating units for changing the total resistance values of the connecting structures, and the resistance regulating units are connected in series with the respective connecting lines; and/or the resistance regulating units are connected in parallel with parts of the respective connecting lines, so that the differences among resistance values of connecting structures can be reduced, and in turn the display effect of a display panel is improved.
    Type: Application
    Filed: December 11, 2013
    Publication date: June 12, 2014
    Inventor: Yu MA
  • Publication number: 20140160837
    Abstract: A resistive memory device Includes word lines stacked on top of one another, at least one first selection line formed over the word lines, a first channel layer passing through the word lines and the first selection line, a first phase change material layer formed in the first channel layer and overlapping the word lines, and a first insulating layer formed in the first channel layer and overlapping the first selection line.
    Type: Application
    Filed: March 16, 2013
    Publication date: June 12, 2014
    Applicant: SK hynix Inc.
    Inventor: Young Soo AHN
  • Publication number: 20140162428
    Abstract: A phase change memory includes an insulating layer on a substrate, an electrode layer having one pole and an electrode layer having another pole within the insulating layer, an opening portion whose lower portion on an upper portion of the insulating layer is substantially square or substantially rectangular, a phase change portion formed substantially parallel to a surface of the substrate along the respective sides of the lower portion of the opening portion, and two connection electrodes having a pole and connected to the phase change portion at two opposing corners of the lower portion of the opening portion connecting a diode portion connected to the electrode layer having one pole and the phase change portion, and two connection electrodes having another pole and connected to the phase change portion at the other two opposing corners connecting the phase change portion and the electrode layer having another pole.
    Type: Application
    Filed: February 11, 2014
    Publication date: June 12, 2014
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Hajime NAKABAYASHI, Kenichi OYAMA, Yoshihiro HIROTA
  • Publication number: 20140159203
    Abstract: A structure comprises a first pad protruding over a top surface of a package substrate, wherein the first pad is of a first elongated shape, a second pad embedded in the package substrate, wherein the second pad is of a second elongated shape and a via coupled between the first pad and the second pad.
    Type: Application
    Filed: December 6, 2012
    Publication date: June 12, 2014
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Hao-Juin Liu, Chita Chuang, Yao-Chun Chuang, Ming Hung Tseng, Chen-Shien Chen
  • Publication number: 20140158973
    Abstract: A nitride-based memristor memristor includes: a first electrode comprising a first nitride material; a second electrode comprising a second nitride material; and active region positioned between the first electrode and the second electrode. The active region includes an electrically semiconducting or nominally insulating and weak ionic switching nitride phase. A method for fabricating the nitride-based memristor is also provided.
    Type: Application
    Filed: August 3, 2011
    Publication date: June 12, 2014
    Inventors: Jianhua Yang, Gilberto Medeiros Ribeiro, R. Stanley Williams
  • Publication number: 20140162429
    Abstract: A semiconductor integrated circuit device, a method of manufacturing the same, and a method of driving the same are provided. The device includes a semiconductor substrate, an upper electrode extending from a surface of the semiconductor substrate; a plurality of switching structures extending from both sidewalls of the upper electrode in a direction parallel to the surface of the semiconductor substrate, and a phase-change material layer disposed between the plurality of switching structures and the upper electrode.
    Type: Application
    Filed: February 18, 2014
    Publication date: June 12, 2014
    Applicant: SK hynix Inc.
    Inventors: Myoung Sub KIM, Soo Gil KIM, Nam Kyun PARK, Sung Cheoul KIM, Gap Sok DO, Joon Seop SIM, Hyun Jeong LEE
  • Patent number: 8748988
    Abstract: A semiconductor device has a semiconductor substrate, a field insulating film disposed on a surface of the semiconductor substrate, a base insulating film disposed on a surface of the field insulating film, and a resistor disposed on the base insulating film. The resistor is formed of a polycrystalline silicon film and has a resistance region and electrode lead-out regions disposed at both ends of the resistance region. A portion of the base insulating film below the resistance region projects with respect to portions of the base insulating film below the electrode lead-out regions so that a height difference occurs therebetween. The resistance region has a thickness thinner than that of each of the electrode lead-out regions.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: June 10, 2014
    Assignee: Seiko Instruments Inc.
    Inventor: Yuichiro Kitajima
  • Publication number: 20140151625
    Abstract: Embodiments of the invention include a method of forming a nonvolatile memory device that contains a resistive switching memory element that has improved device switching performance and lifetime, due to the addition of a current limiting component disposed therein. The electrical properties of the current limiting component are configured to lower the current flow through the variable resistance layer during the logic state programming steps by adding a fixed series resistance in the resistive switching memory element of the nonvolatile memory device. In some embodiments, the current limiting component comprises a varistor that is a current limiting material disposed within a resistive switching memory element in a nonvolatile resistive switching memory device.
    Type: Application
    Filed: February 10, 2014
    Publication date: June 5, 2014
    Applicants: Kabushiki Kaisha Toshiba, SANDISK 3D LLC
    Inventors: Mihir Tendulkar, Imran Hashim, Yun Wang
  • Publication number: 20140154860
    Abstract: Some embodiments include methods in which a memory cell is formed to have programmable material between first and second access lines, with the programmable material having two compositionally different regions. A concentration of ions and/or ion-vacancies may be altered in at least one of the regions to change a memory state of the memory cell and to simultaneously form a pn diode. Some embodiments include memory cells having programmable material with two compositionally different regions, and having ions and/or ion-vacancies diffusible into at least one of the regions. The memory cell has a memory state in which the first and second regions are of opposite conductivity type relative to one another.
    Type: Application
    Filed: February 5, 2014
    Publication date: June 5, 2014
    Applicant: Micron Technology, Inc.
    Inventors: Jun Liu, Gurtej S. Sandhu
  • Publication number: 20140154859
    Abstract: Provided are methods for processing different materials on the same substrate for high throughput screening of multiple ReRAM materials. A substrate may be divided into multiple site isolated regions, each region including one or more base structures operable as bottom electrodes of ReRAM cells. Different test samples may be formed over these base structures in a combinatorial manner. Specifically, each site isolated region may receive a test sample that has a different characteristic than at least one other sample provided in another region. The test samples may have different compositions and/or thicknesses or be deposited using different techniques. These different samples are then etched in the same operation to form portions of the samples. Each portion is substantially larger than the corresponding base structure and fully covers this base structure to protect the interface between the base structure and the portion during etching.
    Type: Application
    Filed: December 5, 2012
    Publication date: June 5, 2014
    Applicant: INTERMOLECULAR INC.
    Inventors: Vidyut Gopal, Tony P. Chiang, Imran Hashim, Randall J. Higuchi, Robert A. Huertas, Hieu Pham, Yun Wang
  • Publication number: 20140151621
    Abstract: Embodiments of the invention include a nonvolatile memory device that contains nonvolatile resistive random access memory device with improved device performance and lifetime. In some embodiments, nonvolatile resistive random access memory device includes a diode, a metal silicon nitride embedded resistor, and a resistive switching layer disposed between a first electrode layer and a second electrode layer. In some embodiments, the method of forming a resistive random access memory device includes forming a diode, forming a metal silicon nitride embedded resistor, forming a first electrode layer, forming a second electrode layer, and forming a resistive switching layer disposed between the first electrode layer and the second electrode layer.
    Type: Application
    Filed: December 3, 2012
    Publication date: June 5, 2014
    Applicants: INTERMOLECULAR INC., SANDISK 3D LLC, KABUSHIKI KAISHA TOSHIBA
    Inventors: Mihir Tendulkar, David Chi
  • Publication number: 20140154861
    Abstract: Some embodiments include methods of forming semiconductor constructions. Carbon-containing material is formed over oxygen-sensitive material. The carbon-containing material and oxygen-sensitive material together form a structure having a sidewall that extends along both the carbon-containing material and the oxygen-sensitive material. First protective material is formed along the sidewall. The first protective material extends across an interface of the carbon-containing material and the oxygen-sensitive material, and does not extend to a top region of the carbon-containing material. Second protective material is formed across the top of the carbon-containing material, with the second protective material having a common composition to the first protective material. The second protective material is etched to expose an upper surface of the carbon-containing material. Some embodiments include semiconductor constructions, memory arrays and methods of forming memory arrays.
    Type: Application
    Filed: February 5, 2014
    Publication date: June 5, 2014
    Applicant: Micron Technology, Inc.
    Inventors: Fabio Pellizzer, Cinzia Perrone
  • Publication number: 20140151623
    Abstract: Provided is a memory device formed on a fiber. The memory device includes a lower electrode, a memory resistance layer, and an upper electrode, which are sequentially formed on a surface of the fiber. The memory resistance layer may have variable resistance properties. The memory device may further include an intermediate electrode and a switching layer formed between the memory resistance layer and the upper electrode.
    Type: Application
    Filed: December 4, 2013
    Publication date: June 5, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang-hun JEON, Jong-jin PARK, Ji-hyun BAE
  • Publication number: 20140151624
    Abstract: A target including: at least one refractory metal element selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, and lanthanoids; at least one element selected from the group consisting of Al, Ge, Zn, Co, Cu, Ni, Fe, Si, Mg, and Ga; and at least one chalcogen element selected from the group consisting of S, Se, and Te. And a method for producing the target.
    Type: Application
    Filed: February 7, 2014
    Publication date: June 5, 2014
    Applicant: Sony Corporation
    Inventors: Kazuhiro Ohba, Yuichi Kamori, Hitoshi Kimura
  • Publication number: 20140151627
    Abstract: Disclosed is a semiconductor device and a method of manufacturing the same. The semiconductor device includes first material layers and second material layers alternately stacked on a first conductive layer. Through holes, each through holes including a first through region, second through region and trench, wherein the first and second through regions pass through the first and second material layers, and the trench is formed in the first conductive layer to connect the first through region and the second through region. Resistive layers, each resistive layer including a first region are disposed in the first through region, a second region disposed in the second through region, and a third region disposed in the trench.
    Type: Application
    Filed: March 14, 2013
    Publication date: June 5, 2014
    Applicant: SK HYNIX INC.
    Inventors: Young Ok HONG, Kyoung A KIM
  • Publication number: 20140151626
    Abstract: MIMCAP diodes are provided that can be suitable for memory device applications, such as current selector devices for cross point memory array. The MIMCAP diodes can have lower thermal budget as compared to Schottky diodes and controllable lower barrier height and lower series resistance as compared to MIMCAP tunneling diodes. The MIMCAP diode can include a barrier height modification layer, a low leakage dielectric layer and a high leakage dielectric layer. The layers can be sandwiched between two electrodes.
    Type: Application
    Filed: December 4, 2012
    Publication date: June 5, 2014
    Applicant: INTERMOLECULAR INC.
    Inventor: Prashant B. Phatak
  • Publication number: 20140154862
    Abstract: A memory cell and a method of making the same, that includes insulating material deposited on a substrate, a bottom electrode formed within the insulating material, a plurality of insulating layers deposited above the bottom electrode and at least one of which acts as an intermediate insulating layer. A via is defined in the insulating layers above the intermediate insulating layer. A channel is created for etch with a sacrificial spacer. A pore is defined in the intermediate insulating layer. All insulating layers above the intermediate insulating layer are removed, and the entirety of the remaining pore is filled with phase change material. An upper electrode is formed above the phase change material.
    Type: Application
    Filed: February 6, 2014
    Publication date: June 5, 2014
    Applicants: Macronix International Co., Ltd., International Business Machines Corporation
    Inventors: Matthew J. Breitwisch, Roger W. Cheek, Chung H. Lam, Hsiang-Lan Lung, Eric A. Joseph, Alejandro G. Schrott
  • Publication number: 20140151628
    Abstract: A method is provided for fabricating a phase change memory. The method includes providing a semiconductor substrate having a bottom electrode connecting with one or more semiconductor devices, and forming a first dielectric layer on the semiconductor substrate. The method also includes forming a loop-shape electrode in the first dielectric layer, and forming a second dielectric layer having a first opening exposing a portion of the first dielectric layer and a portion of the loop-shape electrode. Further, the method includes forming a phase change layer in the first opening of the second dielectric layer such that a contact area between the phase change layer and the loop-shape electrode may be controlled to achieve desired contact, and forming a top electrode.
    Type: Application
    Filed: October 17, 2013
    Publication date: June 5, 2014
    Applicant: Semiconductor Manufacturing International (Shanghai) Corporation
    Inventors: YING LI, NEIL ZHU, GUANPING WU
  • Patent number: 8742390
    Abstract: A memory cell and method including a first electrode conformally formed through a first opening in a first dielectric layer, a resistive layer conformally formed on the first electrode, a second electrode conformally formed on the resistive layer, and a second dielectric layer conformally formed on the second electrode, the second dielectric layer including a second opening. The first dielectric layer is formed on a substrate including a first metal layer. The first electrode and the resistive layer collectively include a first lip region that extends a first distance beyond a region defined by the first opening. The second electrode and the second dielectric layer collectively include a second lip region that extends a second distance beyond the region defined by the first opening. The second electrode is coupled to a second metal layer using a via that extends through the second opening.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: June 3, 2014
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Kuo-Chi Tu, Wen-Ting Chu, Yu-Wen Liao, Chih-Yang Chang, Hsia-Wei Chen, Chin-Chieh Yang
  • Patent number: 8741729
    Abstract: A resistor and capacitor are provided in respective shallow trench isolation structures. The method includes forming a first and second trench in a substrate and forming a first insulator layer within the first and second trench. The method includes forming a first electrode material within the first and second trench, on the first insulator layer, and forming a second insulator layer within the first and second trench and on the first electrode material. The method includes forming a second electrode material within the first and second trench, on the second insulator layer. The second electrode material pinches off the second trench. The method includes removing a portion of the second electrode material and the second insulator layer at a bottom portion of the first trench, and filling in the first trench with additional second electrode material. The additional second electrode material is in electrical contact with the first electrode material.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: June 3, 2014
    Assignee: International Business Machines Corporation
    Inventors: Timothy W. Kemerer, James S. Nakos, Steven M. Shank
  • Patent number: 8741728
    Abstract: Methods, systems, structures and arrays are disclosed, such as a resistive memory array which includes access devices, for example, back-to-back Zener diodes, that only allow current to pass through a coupled resistive memory cell when a voltage drop applied to the access device is greater than a critical voltage. The array may be biased to reduce standby currents and improve delay times between programming and read operations.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: June 3, 2014
    Assignee: Micron Technology, Inc.
    Inventors: Jun Liu, David Porter
  • Publication number: 20140146594
    Abstract: A method of designing a cross-point non-volatile memory device including memory elements arranged in (N×M) matrix, each of the memory elements including a variable resistance element and a bidirectional current steering element connected in series with the variable resistance element, the method comprises the step of: when an absolute value of a low-resistance state writing voltage is VR and an absolute value of a current flowing through the variable resistance element having changed to a low-resistance state by application of the low-resistance state writing voltage to both ends of the variable resistance element in a high-resistance state is Ion, and a relationship between a voltage V0 applied to both ends of the bidirectional current steering element and a current I flowing through the bidirectional current steering element is approximated as |V0|=a×Log(I)+b, deciding N, M, VR, Ion, a, and b such that b?VR/2>a×[Log {(N?1)×(M?1)}?Log(Ion)] is satisfied (S101).
    Type: Application
    Filed: April 3, 2013
    Publication date: May 29, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Yukio Hayakawa, Kiyotaka Tsuji, Shinichi Yoneda, Akifumi Kawahara
  • Publication number: 20140145142
    Abstract: A memristor including a dopant source is disclosed. The structure includes an electrode, a conductive alloy including a conducting material, a dopant source material, and a dopant, and a switching layer positioned between the electrode and the conductive alloy, wherein the switching layer includes an electronically semiconducting or nominally insulating and weak ionic switching material. A method for fabricating the memristor including a dopant source is also disclosed.
    Type: Application
    Filed: July 20, 2011
    Publication date: May 29, 2014
    Inventors: Minxian Max Zhang, Jianhua Yang, R. Stanley Williams
  • Publication number: 20140145136
    Abstract: A non-volatile memory device of the present invention comprises a first electrode; a variable resistance layer formed on and above the first electrode; a second electrode formed on and above the variable resistance layer; a side wall protective layer having an insulativity and covering a side wall of the first electrode, a side wall of the variable resistance layer and a side wall of the second electrode; and an electrically-conductive layer which is in contact with the second electrode; wherein the electrically-conductive layer covers an entire of the second electrode and at least a portion of the side wall protective layer located outward relative to the second electrode, when viewed from a thickness direction; and the side wall protective layer extends across the second electrode to a position above an upper end of the second electrode such that an upper end of the side wall protective layer is located above the upper end of the second electrode, when viewed from a side.
    Type: Application
    Filed: September 26, 2013
    Publication date: May 29, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Hideaki MURASE, Yoshio KAWASHIMA, Atsushi HIMENO
  • Publication number: 20140145135
    Abstract: Provision of fabrication, construction, and/or assembly of a two-terminal memory device is described herein. The two-terminal memory device can include an active region with a silicon bearing layer, an interface layer, and an active metal layer. The interface layer can created comprising a non-stoichimetric sub-oxide that can be a combination of multiple silicon and/or silicon oxide layers with an aggregate chemical formula of SiOX, where X can be a non-integer greater than zero and less than 2. The sub-oxide can be created in a variety of ways, including various techniques related to growing the sub-oxide, depositing the sub-oxide, or transforming an extant film into the sub-oxide.
    Type: Application
    Filed: September 13, 2013
    Publication date: May 29, 2014
    Applicant: Crossbar, Inc.
    Inventors: Harry Yue GEE, Mark Harold CLARK, Steven Patrick MAXWELL, Sung Hyun JO, Natividad VASQUEZ, JR.
  • Patent number: 8735258
    Abstract: Methods of fabricating a semiconductor device including a metal gate transistor and a resistor are provided. A method includes providing a substrate including a transistor device region and an isolation region, forming a dummy gate over the transistor device region and a resistor over the isolation region, and implanting the resistor with a dopant. The method further includes wet etching the dummy gate to remove the dummy gate, and then forming a metal gate over the transistor device region to replace the dummy gate.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: May 27, 2014
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chun-Hung Ko, Jyh-Huei Chen, Shyh-Wei Wang
  • Patent number: 8735861
    Abstract: A semiconductor storage device according to an embodiment includes a first conductive layer, a variable resistance layer, an electrode layer, a first liner layer, a stopper layer, and a second conductive layer. The first liner layer is configured by a material having a property for canceling an influence of an orientation of a lower layer of the first liner layer, the property of the first liner layer being superior compared with that of the stopper layer. The stopper layer is acted upon by an internal stress in a compressive direction at room temperature.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: May 27, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Kotaro Noda
  • Publication number: 20140138604
    Abstract: In some embodiments, an integrated circuit includes narrow, vertically-extending pillars that fill openings formed in the integrated circuit. In some embodiments, the openings can contain phase change material to form a phase change memory cell. The openings occupied by the pillars can be defined using crossing lines of sacrificial material, e.g., spacers, that are formed on different vertical levels. The lines of material can be formed by deposition processes that allow the formation of very thin lines. Exposed material at the intersection of the lines is selectively removed to form the openings, which have dimensions determined by the widths of the lines. The openings can be filled, for example, with phase change material.
    Type: Application
    Filed: November 21, 2012
    Publication date: May 22, 2014
    Applicant: Micron Technology, Inc.
    Inventors: Jun Liu, Kunal Parekh
  • Publication number: 20140138599
    Abstract: 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: Application
    Filed: November 18, 2013
    Publication date: May 22, 2014
    Applicant: Panasonic Corporation
    Inventors: Satoru FUJII, Takumi MIKAWA
  • Publication number: 20140138793
    Abstract: A method for fabricating a metal-insulator-metal (MIM) capacito includes depositing a first middle of line (MOL) conductive layer over a shallow trench isolation (STI) region of a semiconductor substrate. The first MOL conductive layer provides a first plate of the MIM capacitor as well as a first set of local interconnects to source and drain regions of a semiconductor device. The method also includes depositing an insulator layer on the first MOL conductive layer as a dielectric layer of the MIM capacitor. The method further includes depositing a second MOL, conductive layer on the insulator layer as a second plate of the MIM capacitor.
    Type: Application
    Filed: November 21, 2012
    Publication date: May 22, 2014
    Applicant: QUALCOMM Incorporated
    Inventors: PR Chidambaram, Bin Yang
  • Publication number: 20140138597
    Abstract: First conductive layers extend in a first direction horizontal to a substrate as a longitudinal direction, and are stacked in a direction perpendicular to a substrate. An interlayer insulating layer is provided between the first conductive layers. The variable resistance layers functioning as a variable resistance element are formed continuously on the side surfaces of the first conductive layers and the interlayer insulating layer. A columnar conductive layer is provided on the side surfaces of the first conductive layers and the interlayer insulating layer via the variable resistance layers. First side surfaces of the first conductive layers are recessed from a second side surface of the interlayer insulating layer in the direction away from the columnar conductive layers.
    Type: Application
    Filed: March 18, 2013
    Publication date: May 22, 2014
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yasuhiro NOJIRI, Hiroyuki FUKUMIZU, Shigeki KOBAYASHI, Masaki YAMATO
  • Publication number: 20140138607
    Abstract: A non-volatile memory device comprises first wires on and above a first plane; second wires extending in a direction crossing the first wires, on and above a second plane, third wires extending in parallel with the second wires on and above a fourth plane, and memory cells provided to correspond to three-dimensional cross-points of the first wires and the third wires, respectively, each of the memory cells including a transistor and a variable resistance element, the transistor including a first main electrode, a second main electrode, and a control electrode, the variable resistance element being placed on and above a third plane and including a lower electrode, an upper electrode and a variable resistance layer, wherein the upper electrode is connected to corresponding one of the third wires; and further comprises a first contact plug extending from the first main electrode to the second plane and connected to corresponding one of the second wires; a second contact plug extending from the second main electr
    Type: Application
    Filed: October 15, 2013
    Publication date: May 22, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Satoru ITO, Takumi MIKAWA
  • Publication number: 20140141590
    Abstract: The present disclosure includes GCIB-treated resistive devices, devices utilizing GCIB-treated resistive devices (e.g., as switches, memory cells), and methods for forming the GCIB-treated resistive devices. One method of forming a GCIB-treated resistive device includes forming a lower electrode, and forming an oxide material on the lower electrode. The oxide material is exposed to a gas cluster ion beam (GCIB) until a change in resistance of a first portion of the oxide material relative to the resistance of a second portion of the oxide material. An upper electrode is formed on the first portion.
    Type: Application
    Filed: October 31, 2013
    Publication date: May 22, 2014
    Applicant: Micron Technology, Inc
    Inventors: John A. Smythe, III, Gurtej S. Sandhu
  • Publication number: 20140138601
    Abstract: Various embodiments of a composite material are provided. In one embodiment of the present invention a nanometer-scale composite material comprises, by volume, from about 1% to about 99% variable-conductivity material and from about 99% to about 1% conductive material. The composite material exhibits memristive properties when a voltage differential is applied to the nanocomposite. In another embodiment, a variable resistor device includes a first electrode terminal and a second electrode terminal and a nanocomposite in electrical communication with the electrode terminals. The composite material comprises, by volume, from about 1% to about 99% variable-conductivity material and from about 99% to about 1% conductive material. The memristor is tunable as the minimum instantaneous resistance can be altered several orders of magnitude by varying the composition and ratio of the variable-conductivity material and conductive material constituents of the composites.
    Type: Application
    Filed: November 15, 2013
    Publication date: May 22, 2014
    Applicant: Vanderbilt Unviersity
    Inventors: Jeremy West Mares, Sharon M. Weiss
  • Publication number: 20140138603
    Abstract: A RRAM device having a diode device structure coupled to a variable resistance layer is disclosed. The diode device structure can either be embedded into or fabricated over the substrate. A memory device having an array of said RRAM devices can be fabricated with multiple common bit lines and common word lines.
    Type: Application
    Filed: November 20, 2012
    Publication date: May 22, 2014
    Applicant: GLOBALFOUNDRIES Singapore Pte. Ltd.
    Inventors: Shyue Seng TAN, Eng Huat TOH, Elgin QUEK
  • Patent number: 8729637
    Abstract: A device including a p-type semiconductor device and an n-type semiconductor device on a semiconductor substrate. The n-type semiconductor device includes a gate structure having a high-k gate dielectric. A carbon dopant in a concentration ranging from 1×1016 atoms/cm3 to 1×1021 atoms/cm3 is present at an interface between the high-k gate dielectric of the gate structure for the n-type semiconductor device and the semiconductor substrate. Methods of forming the aforementioned device are also disclosed.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: May 20, 2014
    Assignee: International Business Machines Corporation
    Inventors: Yue Liang, Dechao Guo, William K. Henson, Shreesh Narasimha, Yanfeng Wang
  • Patent number: 8728900
    Abstract: An integrated circuit structure includes a semiconductor substrate, and a first and a second MOS device. The first MOS device includes a first gate dielectric over the semiconductor substrate, wherein the first gate dielectric is planar; and a first gate electrode over the first gate dielectric. The second MOS device includes a second gate dielectric over the semiconductor substrate; and a second gate electrode over the second gate dielectric. The second gate electrode has a height greater than a height of the first gate electrode. The second gate dielectric includes a planar portion underlying the second gate electrode, and sidewall portions extending on sidewalls of the second gate electrode.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: May 20, 2014
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Harry Chuang, Mong-Song Liang, Wen-Chih Yang, Chien-Liang Chen, Chii-Horng Li
  • Patent number: 8728901
    Abstract: A method for fabricating a non-volatile, ferroelectric random access memory (F-RAM) device is described. In one embodiment, the method includes forming an opening in an insulating layer over a surface of a substrate, and forming bottom electrode spacers proximal to sidewalls of the opening. Next, a ferroelectric dielectric layer is formed in the opening over the surface of the substrate and between the bottom electrode spacers, and a pair of top electrodes is formed within the opening comprising first and second side portions displaced laterally from respective ones of the bottom electrode spacers by the ferroelectric dielectric layer.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: May 20, 2014
    Assignee: Cypress Semiconductor Corporation
    Inventors: Shan Sun, Thomas Davenport, John Cronin
  • Publication number: 20140131650
    Abstract: A semiconductor structure includes a resistance variable memory structure. The semiconductor structure also includes a dielectric layer. The resistance variable memory structure is over the dielectric layer. The resistance variable memory structure includes a first electrode disposed over the dielectric layer. The first electrode has a sidewall surface. A resistance variable layer has a first portion which is disposed over the sidewall surface of the first electrode and a second portion which extends from the first portion away from the first electrode. A second electrode is over the resistance variable layer.
    Type: Application
    Filed: November 9, 2012
    Publication date: May 15, 2014
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventor: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
  • Publication number: 20140131654
    Abstract: A memory cell and method including a first electrode conformally formed through a first opening in a first dielectric layer, a resistive layer conformally formed on the first electrode, a spacing layer conformally formed on the resistive layer, a second electrode conformally formed on the resistive layer, and a second dielectric layer conformally formed on the second electrode, the second dielectric layer including a second opening. The first dielectric layer is formed on a substrate including a first metal layer. The first electrode and the resistive layer collectively include a first lip region that extends a first distance beyond the first opening. The second electrode and the second dielectric layer collectively include a second lip region that extends a second distance beyond the first opening. The spacing layer extends from the second distance to the first distance. The second electrode is coupled to a second metal layer using a via that extends through the second opening.
    Type: Application
    Filed: March 15, 2013
    Publication date: May 15, 2014
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventor: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
  • Publication number: 20140131653
    Abstract: A programmable metallization device comprises a first electrode and a second electrode, and a dielectric layer, a conductive ion-barrier layer, and an ion-supplying layer in series between the first and second electrodes. In operation, a conductive bridge is formed or destructed in the dielectric layer to represent a data value using bias voltages having the same polarity, enabling the use of diode access devices. To form a conductive bridge, a bias is applied that is high enough to cause ions to penetrate the conductive ion-barrier layer into the dielectric layer, which then form filaments or bridges. To destruct the conductive bridge, a bias of the same polarity is applied that causes current to flow through the structure, while ion flow is blocked by the conductive ion-barrier layer. As a result of Joule heating, any bridge in the dielectric layer disintegrates.
    Type: Application
    Filed: November 13, 2012
    Publication date: May 15, 2014
    Inventors: FENG-MING LEE, YU-YU LIN, MING-HSIU LEE
  • Publication number: 20140134822
    Abstract: A method for fabricating a FinFET integrated circuit includes depositing a first polysilicon layer at a first end of a diffusion region and a second polysilicon layer at a second end of the diffusion region; diffusing an n-type material into the diffusion region to form a diffused resistor; and epitaxially growing a silicon material between the first and second polysilicon layers to form fins structures over the diffused resistor and spanning between the first and second polysilicon layers.
    Type: Application
    Filed: November 15, 2012
    Publication date: May 15, 2014
    Applicant: GLOBALFOUNDRIES, INC.
    Inventors: Gopal Srinivasan, Andy Wei, Dinesh Somasekhar, Ali Keshavarzi, Subi Kengeri
  • Publication number: 20140131651
    Abstract: A memory cell and method including a first electrode conformally formed through a first opening in a first dielectric layer, a resistive layer conformally formed on the first electrode, a second electrode conformally formed on the resistive layer, and a second dielectric layer conformally formed on the second electrode, the second dielectric layer including a second opening. The first dielectric layer is formed on a substrate including a first metal layer. The first electrode and the resistive layer collectively include a first lip region that extends a first distance beyond a region defined by the first opening. The second electrode and the second dielectric layer collectively include a second lip region that extends a second distance beyond the region defined by the first opening. The second electrode is coupled to a second metal layer using a via that extends through the second opening.
    Type: Application
    Filed: November 12, 2012
    Publication date: May 15, 2014
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventor: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
  • Patent number: 8722503
    Abstract: Capacitors and methods of forming semiconductor device capacitors are disclosed. Trenches are formed to define a capacitor bottom plate in a doped upper region of a semiconductor substrate, a dielectric layer is formed conformally over the substrate within the trenches, and a polysilicon layer is formed over the dielectric layer to define a capacitor top plate. A guard ring region of opposite conductivity and peripheral recessed areas may be added to avoid electric field crowding. A central substrate of lower doping concentration may be provided to provide a resistor in series below the capacitor bottom plate. A series resistor may also be provided in a resistivity region of the polysilicon layer laterally extending from the trenched area region. Contact for the capacitor bottom plate may be made through a contact layer formed on a bottom of the substrate.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: May 13, 2014
    Assignee: Texas Instruments Incorporated
    Inventors: Jacek Korec, Shuming Xu, Jun Wang, Boyi Yang