Having High Dielectric Constant Insulator (e.g., Ta2o5, Etc.) Patents (Class 438/240)
  • Patent number: 8324047
    Abstract: In a specific embodiment, the present invention provides an integrated circuit device. The device includes a base substrate having a surface region and an interlayer dielectric material overlying the surface region. The device also has a thickness of single crystal silicon material overlying the interlayer dielectric material. In one or more embodiments, the thickness of single crystal silicon material has a front region and a backside region. The front region faces the interlayer dielectric material. In a preferred embodiment, the device has a plurality of transistor devices spatially arranged in the thickness of silicon crystal silicon material. Each of the transistor devices has a gate structure within a region of the interlayer dielectric material. The device also has an enclosure housing configured to form a cavity between the backside region of the thickness of silicon material and an upper inside region of the enclosure housing.
    Type: Grant
    Filed: November 13, 2010
    Date of Patent: December 4, 2012
    Assignee: MCube Inc.
    Inventor: Xiao “Charles” Yang
  • Patent number: 8318572
    Abstract: This disclosure provides a method of fabricating a semiconductor stack and associated device, such as a capacitor and DRAM cell. In particular, a bottom electrode has a material selected for lattice matching characteristics. This material may be created from a relatively inexpensive metal oxide which is processed to adopt a conductive, but difficult-to-produce oxide state, with specific crystalline form; to provide one example, specific materials are disclosed that are compatible with the growth of rutile phase titanium dioxide (TiO2) for use as a dielectric, thereby leading to predictable and reproducible higher dielectric constant and lower effective oxide thickness and, thus, greater part density at lower cost.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: November 27, 2012
    Assignee: Intermolecular, Inc.
    Inventors: Sunil Shanker, Xiangxin Rui, Pragati Kumar, Hanhong Chen, Toshiyuki Hirota
  • Publication number: 20120292682
    Abstract: In an embodiment of the invention, a method of fabricating a floating-gate PMOSFET (p-type metal-oxide semiconductor field-effect transistor) is disclosed. A silicide blocking layer (e.g. oxide, nitride) is used not only to block areas from being silicided but to also form an insulator on top of a poly-silicon gate. The insulator along with a top electrode (control gate) forms a capacitor on top of the poly-silicon gate. The poly-silicon gate also serves at the bottom electrode of the capacitor. The capacitor can then be used to capacitively couple charge to the poly-silicon gate. Because the poly-silicon gate is surrounded by insulating material, the charge coupled to the poly-silicon gate may be stored for a long period of time after a programming operation.
    Type: Application
    Filed: May 19, 2011
    Publication date: November 22, 2012
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Shanjen Pan, Allan T. Mitchell, Weidong Tian
  • Patent number: 8296943
    Abstract: The present invention relates to surveillance and/or identification devices having capacitors connected in parallel or in series, and methods of making and using such devices. Devices with capacitors connected in parallel, where one capacitor is fabricated with a relatively thick capacitor dielectric and another is fabricated with a relatively thin capacitor dielectric achieve both a high-precision capacitance and a low breakdown voltage for relatively easy surveillance tag deactivation. Devices with capacitors connected in series result in increased lateral dimensions of a small capacitor. This makes the capacitor easier to fabricate using techniques that may have relatively limited resolution capabilities.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: October 30, 2012
    Assignee: Kovio, Inc.
    Inventors: Patrick Smith, Criswell Choi, James Montague Cleeves, Vivek Subramanian, Arvind Kamath, Steven Molesa
  • Patent number: 8278168
    Abstract: A semiconductor device and associated methods, the semiconductor device including a semiconductor substrate with a first well region, a first gate electrode disposed on the first well region, and a first N-type capping pattern, a first P-type capping pattern, and a first gate dielectric pattern disposed between the first well region and the first gate electrode.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: October 2, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hongbae Park, Hagju Cho, Sunghun Hong, Sangjin Hyun, Hoonjoo Na, Hyung-seok Hong
  • Patent number: 8258041
    Abstract: A method of fabricating metal-bearing structures in an integrated circuit such as metal-polysilicon capacitors using conductive metal compounds. Defects due to organometallic polymers formed during the etch of a hard mask material are minimized by using a process that includes a plasma etch for the hard mask that achieves a predominantly chemical character using a fluorine-based etch chemistry. Using a low-temperature liquid-phase strip of the hard mask photoresist instead of an ash prevents further cross-linking of polymers formed during the plasma etch. Etching the metal-bearing material using a hot fully-concentrated mixture of ammonium hydroxide and hydrogen peroxide allows short etch times that are particularly shortened for tantalum nitride films deposited with a nitrogen concentration of about 30 percent or greater.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: September 4, 2012
    Assignee: Texas Instruments Incorporated
    Inventors: Srinivas Raghavan, Kalyan Cherukuri, Thomas E. Lillibridge, Richard A. Faust
  • Patent number: 8258053
    Abstract: In sophisticated semiconductor devices including transistors having a high-k metal gate electrode structure, disposable spacers may be provided on the encapsulating spacer element with a reduced width so as to not unduly increase a lateral offset of a strain-inducing material to be incorporated into the active region. For this purpose, a multi-layer deposition may be used in combination with a low pressure CVD process.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: September 4, 2012
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Stephan Kronholz, Matthias Kessler, Andreas Kurz
  • Patent number: 8257984
    Abstract: A ferroelectric capacitor and a method of manufacturing the same are provided, wherein the ferroelectric capacitor of a semiconductor device, which sequentially includes a lower electrode, a ferroelectric layer, and an upper electrode on a conductive layer connected to a transistor formed on a semiconductor substrate, includes an oxidation preventing layer between the conductive layer and the lower electrode. The oxidation preventing layer prevents the conductive layer from being oxidized during high-temperature heat treatment of the ferroelectric layer. Accordingly, the oxidation resistivity of the interfaces of the conductive layer, used as a storage node, and the lower electrode, which faces the conductive layer, increases, so a temperature at which a ferroelectric thin layer is formed can be also increased. Consequently, a ferroelectric thin layer having excellent characteristics may be obtained.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: September 4, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: June-key Lee, Young-soo Park
  • Patent number: 8247289
    Abstract: A capacitor having a high quality and a manufacturing method of the same are provided. A capacitor has a lower electrode formed on an oxide film, a dielectric layer formed on the lower electrode, an upper electrode formed so as to face the lower electrode with the dielectric layer between, and an upper electrode formed so as to cover the upper electrode, an opening portion of the upper electrode and an opening portion of the dielectric layer. By forming the upper electrode on the dielectric layer, it is possible to pattern the dielectric layer by using the upper electrode as a mask, and provide a capacitor having a high-quality dielectric layer by preventing impurity diffusion into the dielectric layer. By forming the upper electrode on the dielectric layer, it is possible to prevent the dielectric layer from being exposed to etching liquid, liquid developer, etc.
    Type: Grant
    Filed: August 23, 2006
    Date of Patent: August 21, 2012
    Assignee: Ibiden Co., Ltd.
    Inventors: Yoshiki Yamanishi, Muneo Harada, Takahiro Kitano, Tatsuzo Kawaguchi, Yoshihiro Hirota, Kinji Yamada, Tomotaka Shinoda, Katsuya Okumura, Shuichi Kawano
  • Patent number: 8241980
    Abstract: Stable contact hole forming is attained even when an aluminum oxide film is present between layers provided with contact holes. The process comprises the steps of forming a first element layer on a semiconductor substrate; forming a first interlayer insulating film on the first element layer; forming a second element layer on the first interlayer insulating film; forming a second interlayer insulating film on the second element layer; forming a hole resist pattern on the second interlayer insulating film; conducting a first etching for forming of holes by etching the second interlayer insulating film; and conducting a second etching for extending of holes to the first element layer by etching the first interlayer insulating film.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: August 14, 2012
    Assignee: Fujitsu Semiconductor Limited
    Inventors: Yukimasa Miyazaki, Kouichi Nagai, Hideaki Kikuchi
  • Patent number: 8237244
    Abstract: A method of manufacturing a semiconductor device includes forming a lower electrode on a semiconductor substrate, applying a photoresist on the lower electrode, forming an opening in the photoresist spaced from the periphery of the lower electrode, forming a high-dielectric constant film of a high-k material having a dielectric constant of 10 or more, performing liftoff so that the high-dielectric-constant film remains on the lower electrode, and forming an upper electrode on the high-dielectric-constant film remaining after the liftoff.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: August 7, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventor: Masahiro Totsuka
  • Patent number: 8222683
    Abstract: To realize miniaturization/high integration and increase in the amount of accumulated charges, and to give a memory structure having a high reliability. A 1 transistor 1 capacitor (1T1C) structure having 1 ferroelectric capacitor structure and 1 selection transistor every memory cell is adopted, and respective capacitor structures are disposed respectively in either one layer of interlayer insulating films of 2 layers having different heights from the surface of a semiconductor substrate.
    Type: Grant
    Filed: September 6, 2006
    Date of Patent: July 17, 2012
    Assignee: Fujitsu Semiconductor Limited
    Inventor: Yoshimasa Horii
  • Patent number: 8202760
    Abstract: In manufacturing a device using an organic TFT, it is essential to develop an element in which a channel length is short or a channel width is narrow to downsize a device. Based on the above, it is an object of the present invention to provide an organic TFT in which characteristic is improved. In view of the foregoing problem, one feature of the present invention is that an element is baked after an organic semiconductor film is deposited. More specifically, one feature of the present invention is that the organic semiconductor film is heated under atmospheric pressure or under reduced pressure. Moreover, a baking process may be carried out in an inert gas atmosphere.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: June 19, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yoshiharu Hirakata, Tetsuji Ishitani, Shuji Fukai, Ryota Imahayashi
  • Patent number: 8202773
    Abstract: A PMOS transistor is disclosed which includes a nitrogen containing barrier to oxygen diffusion between a gate dielectric layer and a metal gate in the PMOS transistor, in combination with a low oxygen region of the metal gate in direct contact with the nitrogen containing barrier and an oxygen rich region of the metal gate above the low oxygen content metal region. The nitrogen containing barrier may be formed by depositing nitrogen containing barrier material on the gate dielectric layer or by nitridating a top region of the gate dielectric layer. The oxygen rich region of the metal gate may be formed by depositing oxidized metal on the low oxygen region of the metal gate or by oxidizing a top region of the low oxygen region of the metal gate.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: June 19, 2012
    Assignee: Texas Instruments Incorporated
    Inventors: Hiroaki Niimi, Huang-Chun Wen
  • Patent number: 8191217
    Abstract: A high density capacitor and low density capacitor simultaneously formed on a single wafer and a method of manufacture is provided. The method includes depositing a bottom plate on a dielectric material; depositing a low-k dielectric on the bottom plate; depositing a high-k dielectric on the low-k dielectric and the bottom plate; depositing a top plate on the high-k dielectric; and etching a portion of the bottom plate and the high-k dielectric to form a first metal-insulator-metal (MIM) capacitor having a dielectric stack with a first thickness and a second MIM capacitor having a dielectric stack with a second thickness different than the first thickness.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: June 5, 2012
    Assignee: International Business Machines Corporation
    Inventors: James S. Dunn, Zhong-Xiang He, Anthony K. Stamper
  • Patent number: 8187933
    Abstract: Some embodiments include dielectric structures. The structures include first and second portions that are directly against one another. The first portion may contain a homogeneous mixture of a first phase and a second phase. The first phase may have a dielectric constant of greater than or equal to 25, and the second phase may have a dielectric constant of less than or equal to 20. The second portion may be entirely a single composition having a dielectric constant of greater than or equal to 25. Some embodiments include electrical components, such as capacitors and transistors, containing dielectric structures of the type described above. Some embodiments include methods of forming dielectric structures, and some embodiments include methods of forming electrical components.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: May 29, 2012
    Assignee: Micron Technology, Inc.
    Inventors: Noel Rocklein, Chris Carlson, Dave Peterson, Cunyu Yang, Praveen Vaidyanathan, Vishwanath Bhat
  • Patent number: 8183108
    Abstract: A method of making dense dielectrics layers via chemical solution deposition by adding inorganic glass fluxed material to high dielectric constant compositions, depositing the resultant mixture onto a substrate and annealing the substrate at temperatures between the softening point of the inorganic glass flux and the melting point of the substrate. A method of making a capacitor comprising a dense dielectric layer.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: May 22, 2012
    Assignee: CDA Processing Limited Liability Company
    Inventors: William J. Borland, Seigi Suh, Jon-Paul Maria, Jon Fredrick Ihlefeld, Ian Burn
  • Patent number: 8178413
    Abstract: A gate oxide and method of fabricating a gate oxide that produces a more reliable and thinner equivalent oxide thickness than conventional SiO2 gate oxides are provided. Gate oxides formed from alloys such as cobalt-titanium are thermodynamically stable such that the gate oxides formed will have minimal reactions with a silicon substrate or other structures during any later high temperature processing stages. The process shown is performed at lower temperatures than the prior art, which inhibits unwanted species migration and unwanted reactions with the silicon substrate or other structures. Using a thermal evaporation technique to deposit the layer to be oxidized, the underlying substrate surface smoothness is preserved, thus providing improved and more consistent electrical properties in the resulting gate oxide.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: May 15, 2012
    Assignee: Micron Technology, Inc.
    Inventors: Kie Y. Ahn, Leonard Forbes
  • Patent number: 8178404
    Abstract: A Metal-Insulator-Metal (MIM) capacitor structure and method of fabricating the same in an integrated circuit improve capacitance density in a MIM capacitor structure by utilizing a sidewall spacer extending along a channel defined between a pair of legs that define portions of the MIM capacitor structure. Each of the legs includes top and bottom electrodes and an insulator layer interposed therebetween, as well as a sidewall that faces the channel. The sidewall spacer incorporates a conductive layer and an insulator layer interposed between the conductive layer and the sidewall of one of the legs, and the conductive layer of the sidewall spacer is physically separated from the top electrode of the MIM capacitor structure. In addition, the bottom electrode of a MIM capacitor structure may be ammonia plasma treated prior to deposition of an insulator layer thereover to reduce oxidation of the electrode.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: May 15, 2012
    Assignee: NXP B.V.
    Inventors: Michael Olewine, Kevin Saiz
  • Patent number: 8168448
    Abstract: The present invention discloses a ferroelectric register and a method for manufacturing a capacitor of the same. The ferroelectric register is configured to reduce probability of data storage failure due to a weak state capacitor, by connecting a plurality of capacitors in parallel in a ferroelectric capacitor unit for storing data, instead of using a single capacitor, thereby improving storage reliability and stability. In addition, the ferroelectric register obtains a data sensing margin by pumping a cell plate signal into not a power voltage level but a pumping voltage level.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: May 1, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventor: Hee Bok Kang
  • Patent number: 8153514
    Abstract: The present invention provides a gate stack structure that has high mobilities and low interfacial charges as well as semiconductor devices, i.e., metal oxide semiconductor field effect transistors (MOSFETs) that include the same. In the semiconductor devices, the gate stack structure of the present invention is located between the substrate and an overlaying gate conductor. The present invention also provides a method of fabricating the inventive gate stack structure in which a high temperature annealing process (on the order of about 800° C.) is employed. The high temperature anneal used in the present invention provides a gate stack structure that has an interface state density, as measured by charge pumping, of about 8×1010 charges/cm2 or less, a peak mobility of about 250 cm2V-s or greater and substantially no mobility degradation at about 6.0×1012 inversion charges/cm2 or greater.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: April 10, 2012
    Assignee: International Business Machines Corporation
    Inventors: Wanda Andreoni, Alessandro C. Callegari, Eduard A. Cartier, Alessandro Curioni, Christopher P. D'Emic, Evgeni Gousev, Michael A. Gribelyuk, Paul C. Jamison, Rajarao Jammy, Dianne L. Lacey, Fenton R. McFeely, Vijay Narayanan, Carlo A. Pignedoli, Joseph F. Shepard, Jr., Sufi Zafar
  • Patent number: 8153527
    Abstract: A method for fabricating a semiconductor device is provided. The method comprising forming a first layer over a substrate and a second layer over the first layer. A patterned masking layer is subsequently provided over the second layer and a patterned second layer with outwardly tapered sidewalls is formed by isotropically etching exposed portions of the second layer. A patterned first layer is the formed by etching the first layer in accordance with the patterned second layer.
    Type: Grant
    Filed: October 13, 2008
    Date of Patent: April 10, 2012
    Assignee: Globalfoundries Singapore Pte. Ltd.
    Inventors: Soon Yoong Loh, Carol Goh, Kin Wai Tang, Kim Foong Kong
  • Patent number: 8148249
    Abstract: Methods of fabricating semiconductor devices with high-k/metal gate features are disclosed. In some instances, methods of fabricating semiconductor devices with high-k/metal gate features are disclosed that prevent or reduce high-k/metal gate contamination of non-high-k/metal gate wafers and production tools. In some embodiments, the method comprises forming an interfacial layer over a semiconductor substrate on a front side of the substrate; forming a high-k dielectric layer and a capping layer over the interfacial layer; forming a metal layer over the high-k and capping layers; forming a polysilicon layer over the metal layer; and forming a dielectric layer over the semiconductor substrate on a back side of the substrate.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: April 3, 2012
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Yih-Ann Lin, Ryan Chia-Jen Chen, Chien-Hao Chen, Kuo-Tai Huang, Yi-Hsing Chen, Jr Jung Lin, Yu-Chao Lin
  • Patent number: 8120087
    Abstract: A semiconductor device includes an insulating film provided over a semiconductor substrate, a conductive plug buried in the insulating film, an underlying conductive film which is provided on the conductive plug and on the insulating film and which has a flat upper surface, and a ferroelectric capacitor provided on the underlying conductive film. At least in a region on the conductive plug, the concentration of nitrogen in the underlying conductive film gradually decreases from the upper surface to the inside.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: February 21, 2012
    Assignee: Fujitsu Semiconductor Limited
    Inventor: Naoya Sashida
  • Patent number: 8114739
    Abstract: Methods are provided for fabricating a transistor. An exemplary method involves depositing an oxide layer overlying a layer of semiconductor material, forming an oxygen-diffusion barrier layer overlying the oxide layer, forming a layer of high-k dielectric material overlying the oxygen-diffusion barrier layer, forming a layer of conductive material overlying the layer of high-k dielectric material, selectively removing portions of the layer of conductive material, the layer of high-k dielectric material, the oxygen-diffusion barrier layer, and the oxide layer to form a gate stack, and forming source and drain regions about the gate stack. When the conductive material is an oxygen-gettering conductive material, the oxygen-diffusion barrier layer prevents diffusion of oxygen from the deposited oxide layer to the oxygen-gettering conductive material.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: February 14, 2012
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Murshed M. Chowdhury, James K. Schaeffer
  • Patent number: 8110491
    Abstract: A manufacturing method of a semiconductor device of the present invention includes the step of forming an insulating film on a substrate, and the step of forming a high dielectric constant insulating film on the insulating film, and the step of forming a titanium aluminum nitride film on the high dielectric constant insulating film, wherein in the step of forming the titanium aluminum nitride film, formation of an aluminum nitride film and formation of a titanium nitride film are alternately repeated, and at that time, the aluminum nitride film is formed firstly and/or lastly.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: February 7, 2012
    Assignee: Hitachi Kokusai Electric Inc.
    Inventor: Kazuhiro Harada
  • Patent number: 8105896
    Abstract: A method of forming a capacitor includes forming a conductive first capacitor electrode material comprising TiN over a substrate. TiN of the TiN-comprising material is oxidized effective to form conductive TiOxNy having resistivity no greater than 1 ohm·cm over the TiN-comprising material where x is greater than 0 and y is from 0 to 1.4. A capacitor dielectric is formed over the conductive TiOxNy. Conductive second capacitor electrode material is formed over the capacitor dielectric. Other aspects and implementations are contemplated, including capacitors independent of method of fabrication.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: January 31, 2012
    Assignee: Micron Technology, Inc.
    Inventors: Vishwanath Bhat, Noel Rocklein, F. Daniel Gealy
  • Patent number: 8105930
    Abstract: In one embodiment, the method of forming a dielectric layer includes supplying a first precursor at a temperature less than 400 degrees Celsius to a chamber including a substrate. The first precursor includes dysprosium. A first reaction gas is supplied to the chamber to react with the first precursor. A second precursor is supplied at a temperature less than 400 degrees Celsius to the chamber, and the second precursor includes scandium. A second reaction gas is supplied to the chamber to react with the second precursor.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: January 31, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hoonsang Choi, Bongjin Kuh, Sunjung Kim, Youngsun Kim, Seunghwan Lee, Sangwook Lim, Chunhyung Chung
  • Patent number: 8102022
    Abstract: In a semiconductor device manufacturing method, an amorphous or microcrystalline metal oxide film is formed over a first metal film which is preferentially oriented along a predetermined crystal plane. After that, a ferroelectric film is formed by a MOCVD method. When the ferroelectric film is formed, the metal oxide film formed over the first metal film is reduced to a second metal film and the ferroelectric film is formed over the second metal film. When the ferroelectric film is formed, the amorphous or microcrystalline metal oxide film is apt to be reduced uniformly. As a result, the second metal film the orientation of which is good is obtained and the ferroelectric film the orientation of which is good is formed over the second metal film. After the ferroelectric film is formed, an upper electrode is formed over the ferroelectric film.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: January 24, 2012
    Assignee: Fujitsu Semiconductor Limited
    Inventor: Wensheng Wang
  • Patent number: 8093118
    Abstract: A semiconductor structure and a method of forming the same are provided. The semiconductor structure includes a substrate, a resistor and a metal gate structure. The substrate has a first area and a second area. The resistor is disposed in the first area, wherein the resistor does not include any metal layer. The metal gate structure is disposed in the second area.
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: January 10, 2012
    Assignee: United Microelectronics Corp.
    Inventors: Kun-Szu Tseng, Che-Hua Hsu, Cheng-Wen Fan, Chih-Yu Tseng, Victor Chiang Liang
  • Patent number: 8093070
    Abstract: A method is provided for fabricating a ferroelectric capacitor structure including a method for etching and cleaning patterned ferroelectric capacitor structures in a semiconductor device. The method comprises etching portions of an upper electrode, etching ferroelectric material, and etching a lower electrode to define a patterned ferroelectric capacitor structure, and etching a portion of a lower electrode diffusion barrier structure. The method further comprises ashing the patterned ferroelectric capacitor structure using a first ashing process, where the ash comprises an oxygen/nitrogen/water-containing ash, performing a wet clean process after the first ashing process, and ashing the patterned ferroelectric capacitor structure using a second ashing process.
    Type: Grant
    Filed: February 15, 2007
    Date of Patent: January 10, 2012
    Assignee: Texas Instruments Incorporated
    Inventors: Francis Gabriel Celii, Kezhakkedath R. Udayakumar, Gregory B. Shinn, Theodore S. Moise, Scott R. Summerfelt
  • Patent number: 8088659
    Abstract: High dielectric films of mixed transition metal oxides of titanium and tungsten, or titanium and tantalum, are formed by sequential chemical vapor deposition (CVD) of the respective nitrides and annealing in the presence of oxygen to densify and oxidize the nitrides. The resulting film is useful as a capacitative cell and resists oxygen diffusion to the underlying material, has high capacitance and low current leakage.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: January 3, 2012
    Assignee: Micron Technology, Inc.
    Inventors: Jiong-Ping Lu, Ming-Jang Hwang
  • Patent number: 8071476
    Abstract: Electronic apparatus and methods of forming the electronic apparatus include a cobalt titanium oxide film on a substrate for use in a variety of electronic systems. The cobalt titanium oxide film may be structured as one or more monolayers. The cobalt titanium oxide film may be formed by atomic layer deposition.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: December 6, 2011
    Assignee: Micron Technology, Inc.
    Inventors: Kie Y. Ahn, Leonard Forbes
  • Patent number: 8062966
    Abstract: Semiconductor devices and fabrication methods are provided, in which metal transistor replacement gates are provided for CMOS transistors. The process provides dual or differentiated work function capability (e.g., for PMOS and NMOS transistors) in CMOS processes.
    Type: Grant
    Filed: December 24, 2009
    Date of Patent: November 22, 2011
    Assignee: Texas Instruments Incorporated
    Inventors: Freido Mehrad, James J. Chambers, Shaofeng Yu
  • Patent number: 8062943
    Abstract: A capacitor with zirconium oxide and a method for fabricating the same are provided. The method includes: forming a storage node; forming a multi-layered dielectric structure on the storage node, the multi-layered dielectric structure including a zirconium oxide (ZrO2) layer and an aluminum oxide (Al2O3) layer; and forming a plate electrode on the multi-layered dielectric structure.
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: November 22, 2011
    Assignee: Hynix Semiconductor
    Inventor: Kee-jeung Lee
  • Patent number: 8049117
    Abstract: A method for manufacturing a printed circuit board with a capacitor embedded therein which has a dielectric film using laser lift off, and a capacitor manufactured thereby. In the method, a dielectric film is formed on a transparent substrate and heat-treated. A first conductive layer is formed on the heat-treated dielectric film. A laser beam is irradiated onto a stack formed, from below the transparent substrate, to separate the transparent substrate from the stack. After the transparent substrate is separated from the stack, a second conductive layer is formed with a predetermined pattern on the dielectric film. Also, an insulating layer and a third conductive layer are formed on the first and second conductive layers to alternate with each other in a predetermined number.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: November 1, 2011
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jung Won Lee, Yul Kyo Chung, In Hyung Lee
  • Patent number: 8048735
    Abstract: The present invention provides an MIM capacitor using a high-k dielectric film preventing degradation of breakdown field strength of the MIM capacitor and suppressing the increase of the leakage current. The MIM capacitor comprises a first metal interconnect, a fabricated capacitance film, a fabricated upper electrode, and a third metal interconnect. The MIM capacitor is realized by forming an interlayer dielectric film comprising silicon oxide so as to cover the first metal interconnect, then forming a first opening in the interlayer dielectric film to a region corresponding to a via hole layer in the interlayer dielectric film just above the first metal interconnect so as not to expose the upper surface of the first metal interconnect, then forming a second opening to the inside of the first opening so as to expose the surface of the first metal interconnect and then forming a capacitance film and a third metal interconnect.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: November 1, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Kenichi Takeda, Tsuyoshi Fujiwara, Toshinori Imai
  • Patent number: 8044452
    Abstract: The present invention provides a high-quality semiconductor device in which deterioration in transistor characteristics and an increase in interface layer due to a gate insulating film are suppressed, and a method for manufacturing the same. In the present invention, an interface layer, a diffusion suppressing layer and a high dielectric constant insulating film are formed sequentially in this order on one surface of a silicon substrate.
    Type: Grant
    Filed: March 18, 2004
    Date of Patent: October 25, 2011
    Assignee: Rohm Co., Ltd.
    Inventors: Tominaga Koji, Iwamoto Kunihiko, Yasuda Tetsuji, Nabatame Toshihide
  • Patent number: 8039759
    Abstract: A method for manufacturing a printed circuit board with a capacitor embedded therein which has a dielectric film using laser lift off, and a capacitor manufactured thereby. In the method, a dielectric film is formed on a transparent substrate and heat-treated. A first conductive layer is formed on the heat-treated dielectric film. A laser beam is irradiated onto a stack formed, from below the transparent substrate, to separate the transparent substrate from the stack. After the transparent substrate is separated from the stack, a second conductive layer is formed with a predetermined pattern on the dielectric film. Also, an insulating layer and a third conductive layer are formed on the first and second conductive layers to alternate with each other in a predetermined number.
    Type: Grant
    Filed: June 8, 2007
    Date of Patent: October 18, 2011
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jung Won Lee, Yul Kyo Chung, In Hyung Lee
  • Patent number: 8034680
    Abstract: Provided are a memory device formed using one or more source materials not containing hydrogen as a constituent element and a method of manufacturing the memory device.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: October 11, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kihwan Kim, Youngsoo Park, Junghyun Lee, Changjung Kim, Bosoo Kang
  • Patent number: 8022448
    Abstract: Apparatus and methods for evaporating metal onto semiconductor wafers are disclosed. One such apparatus can include an evaporation chamber that includes a wafer holder, such as a dome, and a test wafer holder that is separate and spaced apart from the wafer holder. In certain implementations, the test wafer can be coupled to a cross beam supporting at least one shaper. A metal can be evaporated onto production wafers positioned in the wafer holder while metal is evaporated on a test wafer positioned in a test wafer holder. In some instances, the production wafers can be GaAs wafers. The test wafer can be used to make a quality assessment about the production wafers.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: September 20, 2011
    Assignee: Skyworks Solutions, Inc.
    Inventors: Lam T. Luu, Shiban K. Tiku, Richard S. Bingle, Jens A. Riege, Heather L. Knoedler, Daniel C. Weaver
  • Patent number: 8021948
    Abstract: A method for manufacturing a non-volatile memory device is described. The method comprises growing a layer in a siliconoxide consuming material, e.g. DyScO, on top of the upper layer of the layer where charge is stored. A non-volatile memory device is also described. In the non-volatile memory device, the interpoly/blocking dielectric comprises a layer in a siliconoxide consuming material, e.g. DyScO, on top of the upper layer of the layer where charge is stored, the siliconoxide consuming material having consumed at least part of the upper layer.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: September 20, 2011
    Assignee: IMEC
    Inventors: Bogdan Govoreanu, Stefan De Gendt, Sven Van Elshocht, Tom Schram
  • Patent number: 8012824
    Abstract: A method of reducing impurities in a high-k dielectric layer comprising the following steps. A substrate is provided. A high-k dielectric layer having impurities is formed over the substrate. The high-k dielectric layer being formed by an MOCVD or an ALCVD process. The high-k dielectric layer is annealed to reduce the impurities within the high-k dielectric layer.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: September 6, 2011
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Liang-Gi Yao, Ming-Fang Wang, Shih-Chang Chen, Mong-Song Liang
  • Publication number: 20110212585
    Abstract: A semiconductor device including a capacitor and a proximate high-voltage gate having a boron-barrier layer that ideally serves as part of both the capacitor dielectric and the (high voltage) HV gate oxide. The boron-barrier layer is preferably formed over a poly oxide layer that is in turn deposited on a substrate infused to create a neighboring wells, and N-well over which the capacitor will be formed, and P-well to be overlaid by the HV gate. The boron-barrier helps to reduce or eliminate the harmful effects of boron diffusion from the P-well during TEOS deposition of the gate oxide material.
    Type: Application
    Filed: May 9, 2011
    Publication date: September 1, 2011
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chyi-Chyuan Huang, Shyh-An Lin, Chen-Fu Hsu
  • Patent number: 8003462
    Abstract: A first electrode film containing TiAlN and a main dielectric film containing tantalum oxide are formed over a semiconductor substrate. Anneal is performed in the state that the first electrode film and the main dielectric film are formed, to react aluminum (Al) in the first electrode film with oxygen (O) in the main dielectric film and form a subsidiary dielectric film containing aluminum oxide at an interface between the first electrode film and the main dielectric film. A second electrode film is formed facing the first electrode film via the main dielectric film and the subsidiary dielectric film.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: August 23, 2011
    Assignee: Fujitsu Semiconductor Limited
    Inventor: Masaaki Nakabayashi
  • Patent number: 7981741
    Abstract: Deposited thin-film dielectrics having columnar grains and high dielectric constants are formed on heat treated and polished metal foil. The sputtered dielectrics are annealed at low oxygen partial pressures.
    Type: Grant
    Filed: August 2, 2007
    Date of Patent: July 19, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Lijie Bao, Zhigang Rick Li, Damien Reardon, James F. Ryley, Cengiz A. Palanduz
  • Patent number: 7977150
    Abstract: In manufacturing a device using an organic TFT, it is essential to develop an element in which a channel length is short or a channel width is narrow to downsize a device. Based on the above, it is an object of the present invention to provide an organic TFT in which characteristic is improved. In view of the foregoing problem, one feature of the present invention is that an element is baked after an organic semiconductor film is deposited. More specifically, one feature of the present invention is that the organic semiconductor film is heated under atmospheric pressure or under reduced pressure. Moreover, a baking process may be carried out in an inert gas atmosphere.
    Type: Grant
    Filed: January 6, 2010
    Date of Patent: July 12, 2011
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yoshiharu Hirakata, Tetsuji Ishitani, Shuji Fukai, Ryota Imahayashi
  • Patent number: 7973352
    Abstract: Integrated circuit capacitors have composite dielectric layers therein. These composite dielectric layers include crystallization inhibiting regions that operate to increase the overall crystallization temperature of the composite dielectric layer. An integrated circuit capacitor includes first and second capacitor electrodes and a capacitor dielectric layer extending between the first and second capacitor electrodes. The capacitor dielectric layer includes a composite of a first dielectric layer extending adjacent the first capacitor electrode, a second dielectric layer extending adjacent the second capacitor electrode and an electrically insulating crystallization inhibiting layer extending between the first and second dielectric layers. The electrically insulating crystallization inhibiting layer is formed of a material having a higher crystallization temperature characteristic relative to the first and second dielectric layers.
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: July 5, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-hyoung Choi, Jung-hee Chung, Cha-young Yoo, Young-sun Kim, Se-hoon Oh
  • Patent number: 7955926
    Abstract: In one embodiment, the present invention provides a method of fabricating a semiconducting device that includes providing a substrate including at least one semiconducting region and at least one oxygen source region; forming an oxygen barrier material atop portions of an upper surface of the at least one oxygen region; forming a high-k gate dielectric on the substrate including the at least one semiconducting region, wherein oxygen barrier material separates the high-k gate dielectric from the at least one oxygen source material; and forming a gate conductor atop the high-k gate dielectric.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: June 7, 2011
    Assignee: International Business Machines Corporation
    Inventors: Wesley C. Natzle, Renee T. Mo, Rashmi Jha, Kathryn T. Schonenberg, Richard A. Conti
  • Patent number: RE43673
    Abstract: A method of forming dual gate dielectric layers that is extendable to satisfying requirements for 50 nm and 70 nm technology nodes is described. A substrate is provided with STI regions that separate device areas. An interfacial layer and a high k dielectric layer are sequentially deposited on the substrate. The two layers are removed over one device area and an ultra thin silicon oxynitride layer with an EOT<10 nm is grown on the exposed device area. The high k dielectric layer is annealed during growth of the SiON dielectric layer. The high k dielectric layer is formed from a metal oxide or its silicate or aluminate and enables a low power device to be fabricated with an EOT<1.8 nm with a suppressed leakage current. The method is compatible with a dual or triple oxide thickness process when forming multiple gates.
    Type: Grant
    Filed: September 8, 2006
    Date of Patent: September 18, 2012
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Tou-Hung Hou, Ming-Fang Wang, Chi-Chun Chen, Chih-Wei Yang, Liang-Gi Yao, Shih-Chang Chen