Oxidation Of Deposited Material Patents (Class 438/431)
  • Patent number: 11456185
    Abstract: In certain embodiments, a method for processing a substrate includes applying a surface treatment to selected surfaces of the substrate. The substrate has a non-planar topography including structures defining recesses. The method further includes depositing a fill material on the substrate by spin-on deposition. The surface treatment directs the fill material to the recesses and away from the selected surfaces to fill the recesses with the fill material without adhering to the selected surfaces. The method further includes removing the surface treatment from the selected surfaces of the substrate and depositing a planarizing film on the substrate by spin-on deposition. The planarizing film is deposited on the selected surfaces and top surfaces of the fill material.
    Type: Grant
    Filed: June 9, 2020
    Date of Patent: September 27, 2022
    Assignee: Tokyo Electron Limited
    Inventors: Ryan Burns, Mark Somervell, Corey Lemley
  • Patent number: 10872950
    Abstract: A method is provided for fabricating thick silicon oxide structures, such as an embedded inductor. A Deep Reactive Ion Etch (DREI) etches the top silicon layer of a substrate to form high aspect ratio Si features, called trench texturing. The Si features are oxidized to form silicon oxide features. Adjacent Si features are separated by a trench width (S(0)), so that after oxidation, adjacent Si oxide features are formed separated by trench width (S(t)), where S(t)?S(0) (e.g., S(t)=0). If the Si features have a width WSi(0)>1.2728 S(0), then the adjacent silicon oxide features form an amorphously merged silicon oxide feature with a planar top surface. The silicon oxide features have a height (HOX(t)) responsive to the trench width (S(0)), the Si feature width (WSi(t)), and the Si feature aspect ratio. After oxidation, inductor metal is deposited in trenches where WSi(0)<1.2728 S(0).
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: December 22, 2020
    Assignee: NanoHenry Inc.
    Inventor: Osman Ersed Akcasu
  • Patent number: 10859602
    Abstract: Transferring electronic probe assemblies to space transformers. In accordance with a first method embodiment, a plurality of probes is formed in a sacrificial material on a sacrificial substrate via microelectromechanical systems (MEMS) processes. The tips of the plurality of probes are formed adjacent to the sacrificial substrate and the remaining structure of the plurality of probes extends outward from the sacrificial substrate. The sacrificial material comprising the plurality of probes is attached to a space transformer. The space transformer includes a plurality of contacts on one surface for contacting the plurality of probes at a probe pitch and a corresponding second plurality of contacts on another surface at a second pitch, larger than the probe pitch, wherein each of the second plurality of contacts is electrically coupled to a corresponding one of the plurality of probes. The sacrificial substrate is removed, and the sacrificial material is removed, leaving the plurality of probes intact.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: December 8, 2020
    Inventors: Lakshmikanth Namburi, Florent Cros
  • Patent number: 10424639
    Abstract: A method of fabricating a semiconductor device includes forming a gate on a nanosheet stack including a first nanosheet and a second nanosheet. The first nanosheet and the second nanosheet each include a dielectric material. The method includes removing a portion of the nanosheet stack in a source/drain region adjacent to the gate to form a trench and depositing a first semiconductor material in the trench. The method further includes removing the second nanosheet from the nanosheet stack to form a channel region gap in the nanosheet stack and depositing a second semiconductor material in the channel region gap to form a channel.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: September 24, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Xin Miao, Wenyu Xu, Kangguo Cheng, Chen Zhang
  • Patent number: 10283617
    Abstract: Device structures and fabrication methods for a field-effect transistor. A first dielectric spacer adjacent to a sidewall of a gate placeholder structure. A contact placeholder structure is formed adjacent to the first dielectric spacer such that the first dielectric spacer is arranged laterally between the gate placeholder structure and the contact placeholder structure. The contact placeholder structure and the first dielectric spacer are recessed to open a space over the contact placeholder structure and the first dielectric spacer. A second dielectric spacer is formed in the space adjacent to the sidewall of the gate placeholder structure and over the first dielectric spacer.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: May 7, 2019
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Ruilong Xie, Dong-Ick Lee, Min Gyu Sung, Chanro Park
  • Patent number: 9831113
    Abstract: A method of manufacturing a semiconductor device includes forming a silicon nitride film having an opening portion on a semiconductor substrate, forming a silicon oxide film on the silicon nitride film and on a side face of the opening portion, performing an etching treatment to the silicon oxide film so that a sidewall is formed on the side face of the opening portion, forming a trench on the semiconductor substrate with use of the sidewall and the silicon nitride film as a mask, and forming an insulating layer in the trench. The step of forming the silicon oxide film includes oxidizing the silicon nitride film with a plasma oxidation method or a radical oxidation method.
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: November 28, 2017
    Assignee: Cypress Semiconductor Corporation
    Inventors: Fumihiko Inoue, Yukio Hayakawa
  • Patent number: 9732436
    Abstract: Provided are an SiC single-crystal ingot containing an SiC single crystal having a low threading dislocation density and low resistivity; an SiC single crystal; and a production method for the SiC single crystal. The SiC single crystal ingot contains a seed crystal and a grown crystal grown by a solution process in which the seed crystal is the base point, the grown crystal of the SiC single crystal ingot containing a nitrogen density gradient layer in which the nitrogen content increases in the direction of growth from the seed crystal.
    Type: Grant
    Filed: April 16, 2013
    Date of Patent: August 15, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takayuki Shirai, Katsunori Danno
  • Patent number: 9647094
    Abstract: A method of manufacturing a semiconductor structure includes the steps of depositing a layer of semiconductor oxide on a base semiconductor layer, scavenging oxygen from the layer of semiconductor oxide and recrystallizing the oxygen scavenged layer of semiconductor oxide as a semiconductor heteroepitaxy layer.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: May 9, 2017
    Assignee: UNIVERSITY OF KENTUCKY RESEARCH FOUNDATION
    Inventor: Zhi David Chen
  • Patent number: 9614052
    Abstract: A device includes a conductive layer including a bottom portion, and a sidewall portion over the bottom portion, wherein the sidewall portion is connected to an end of the bottom portion. An aluminum-containing layer overlaps the bottom portion of the conductive layer, wherein a top surface of the aluminum-containing layer is substantially level with a top edge of the sidewall portion of the conductive layer. An aluminum oxide layer is overlying the aluminum-containing layer. A copper-containing region is over the aluminum oxide layer, and is spaced apart from the aluminum-containing layer by the aluminum oxide layer. The copper-containing region is electrically coupled to the aluminum-containing layer through the top edge of the sidewall portion of the conductive layer.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: April 4, 2017
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Li-Lin Su, Ching-Hua Hsieh, Huang-Ming Chen, Hsueh Wen Tsau
  • Patent number: 9589837
    Abstract: The present disclosure relates to an electrode manufacturing method, and a fuse device and manufacturing method therefor. The fuse device includes a fuse element including a phase change material, and a first electrode formed in contact with the fuse element. The phase change material may include doped or undoped chalcogenide. The first electrode may have a sublithographic dimension at a portion where the first electrode contacts the fuse element. When the phase change material has a layer thickness less than or equal to about 30 nm, and a pulse current less than or equal to about 3 mA is applied to the fuse element via the first electrode, the fuse element may undergo a phase change, so as to convert the fuse device into a blow-out state.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: March 7, 2017
    Assignee: SEMICONDUCTOR MANUFACTURING INTERNATIONAL (SHANGHAI) CORPORATION
    Inventors: Ying Li, Guanping Wu
  • Patent number: 9236510
    Abstract: A method for making an ablated electrically insulating layer on a semiconductor substrate. A first relatively thin layer of at least an undoped glass or undoped oxide is deposited on a surface of a semiconductor substrate having n-type doping. A first relatively thin semiconductor layer having at least one substance chosen from amorphous semiconductor, nanocrystalline semiconductor, microcrystalline semiconductor, or polycrystalline semiconductor is deposited on the relatively thin layer of at least an undoped glass or undoped oxide. At least a layer of borosilicate glass or borosilicate/undoped glass stack is deposited on the relatively thin semiconductor layer. The at least borosilicate glass or borosilicate/undoped glass stack is selectively ablated with a pulsed laser, and the relatively thin semiconductor layer substantially protects the semiconductor substrate from the pulsed laser.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: January 12, 2016
    Assignee: Solexel, Inc.
    Inventors: Mehrdad M. Moslehi, Virendra V. Rana, Pranav Anbalagan, Vivek Saraswat
  • Patent number: 9209040
    Abstract: A semiconductor device includes a semiconductor substrate and a trench isolation. The trench isolation is located in the semiconductor substrate, and includes a first cushion layer, a second cushion layer and an insulating filler. The first cushion layer is peripherally enclosed by the semiconductor substrate, the second cushion layer is peripherally enclosed by the first cushion layer, and insulating filler is peripherally enclosed by the second cushion layer. A method for fabricating the semiconductor device is also provided herein.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: December 8, 2015
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Kuo-Min Lin, Wei-Lun Hong, Ying-Tsung Chen, Liang-Guang Chen
  • Patent number: 9093270
    Abstract: A method of manufacturing a semiconductor device can enhance controllability of the diameters of grains of a film containing a predetermined element such as a silicon film when the film is formed. The method includes (a) forming a seed layer containing a predetermined element and carbon on a substrate by performing a cycle a predetermined number of times, the cycle including alternately performing supplying a first source gas containing the predetermined element, an alkyl group and a halogen group to the substrate and supplying a second source gas containing the predetermined element and an amino group to the substrate, or by performing supplying the first source gas to the substrate a predetermined number of times; and (b) forming a film containing the predetermined element on the seed layer by supplying a third source gas containing the predetermined element and free of the alkyl group to the substrate.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: July 28, 2015
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Yoshiro Hirose, Kenichi Suzaki
  • Patent number: 9012293
    Abstract: 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: Grant
    Filed: January 10, 2013
    Date of Patent: April 21, 2015
    Assignee: GLOBALFOUNDRIES Singapore Pte. Ltd.
    Inventors: Chang Yong Xiao, Roderick Miller, Jie Chen
  • Patent number: 8890252
    Abstract: A semiconductor device includes a switching element having: a drift layer; a base region; an element-side first impurity region in the base region; an element-side gate electrode sandwiched between the first impurity region and the drift layer; a second impurity region contacting the drift layer; an element-side first electrode coupled with the element-side first impurity region and the base region; and an element-side second electrode coupled with the second impurity region, and a FWD having: a first conductive layer; a second conductive layer; a diode-side first electrode coupled to the second conductive layer; a diode-side second electrode coupled to the first conductive layer; a diode-side first impurity region in the second conductive layer; and a diode-side gate electrode in the second conductive layer sandwiched between first impurity region and the first conductive layer and having a first gate electrode as an excess carrier injection suppression gate.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: November 18, 2014
    Assignee: DENSO CORPORATION
    Inventors: Hirotaka Saikaku, Tsuyoshi Yamamoto, Shoji Mizuno, Masakiyo Sumitomo, Tetsuo Fujii, Jun Sakakibara, Hitoshi Yamaguchi, Yoshiyuki Hattori, Rie Taguchi, Makoto Kuwahara
  • Patent number: 8883638
    Abstract: A method for manufacturing a damascene structure includes providing a substrate having a dielectric layer formed thereon, forming at least a trench in the dielectric layer, forming at least a via hole and a dummy via hole in the dielectric layer, forming a first conductive layer filling up the trench, the via hole and the dummy via hole on the substrate, and performing a chemical mechanical polishing process to form a damascene structure and simultaneously to remove the dummy via hole.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: November 11, 2014
    Assignee: United Microelectronics Corp.
    Inventors: En-Chiuan Liou, Chih-Wei Yang, Chih-Sen Huang, Chan-Yuan Hu, Ssu-I Fu
  • Patent number: 8883654
    Abstract: The present arrangement provides a method of treating an oxidized layer of metal nitride, including oxidizing a layer (2) of metal oxide at the surface of a first layer (1) of nitride of said metal using a plasma of an oxidizing species with an oxidation number that is greater than that of oxygen in order to form a metallic layer (3) of a compound based on said metal; and reducing the metallic layer (3) formed in step i) using a plasma of hydrogen and nitrogen to form a second layer (4) of nitride of said metal.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: November 11, 2014
    Assignee: Altis Semiconductor
    Inventors: Michel Aube, Pierre De Person
  • Patent number: 8815699
    Abstract: Generally, the present disclosure is directed to methods for forming reverse shallow trench isolation structures with super-steep retrograde wells for use with field effect transistor elements. One illustrative method disclosed herein includes performing a thermal oxidation process to form a layer of thermal oxide material on a semiconductor layer of a semiconductor substrate, and forming a plurality of openings in the layer of thermal oxide material to form a plurality of isolation regions from the layer of thermal oxide material, wherein each of the plurality of openings exposes a respective surface region of the semiconductor layer.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: August 26, 2014
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Tong Weihua, Krishnan Bharat, Lun Zhao, Kim Seung, Lee Yongmeng, Kim Sun
  • Patent number: 8809163
    Abstract: A fabricating method of a trench-gate metal oxide semiconductor device is provided. The fabricating method includes the steps of defining a first zone and a second zone in a substrate, forming at least one first trench in the second zone, forming a dielectric layer on the first zone and the second zone, filling the dielectric layer in the first trench, performing an etching process to form at least one second trench in the first zone by using the dielectric layer as an etching mask, forming a first gate dielectric layer on a sidewall of the second trench, and filling a conducting material layer into the second trench, thereby forming a first gate electrode.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: August 19, 2014
    Assignee: United Microelectronics Corporation
    Inventors: Kuan-Ling Liu, Shih-Yuan Ueng
  • Patent number: 8728908
    Abstract: Disclosed herein are various methods of forming metal-containing insulating material regions on a metal layer of a gate structure of a semiconductor device. In one example, the method includes forming a gate structure of a transistor, the gate structure comprising at least a first metal layer, and forming a first metal-containing insulating material region in the first metal layer by performing a gas cluster ion beam process using to implant gas molecules into the first metal layer.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: May 20, 2014
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Ruilong Xie, Chang Seo Park, William James Taylor, III, John Iacoponi
  • Patent number: 8722510
    Abstract: A method of filling a trench comprises heating a semiconductor substrate having a trench formed therein and an oxide film formed at least on the sidewall of the trench and supplying an aminosilane gas to the surface of the substrate so as to form a seed layer on the semiconductor substrate, heating the semiconductor substrate having the seed layer formed thereon and supplying a monosilane gas to the surface of the seed layer so as to form a silicon film on the seed layer, filling the trench of the semiconductor substrate, which has the silicon film formed thereon, with a filling material that shrinks by burning, and burning the semiconductor substrate coated by the filling material filling the trench in an atmosphere containing water and/or a hydroxy group while changing the filling material into a silicon oxide and changing the silicon film and the seed layer into a silicon oxide.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: May 13, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Masahisa Watanabe, Kazuhide Hasebe
  • Patent number: 8710510
    Abstract: An insulated gate bipolar transistor (IGBT) includes a substrate having a first conductivity type, a drift layer having a second conductivity type opposite the first conductivity type, and a well region in the drift layer and having the first conductivity type. An epitaxial channel adjustment layer is on the drift layer and has the second conductivity type. An emitter region extends from a surface of the epitaxial channel adjustment layer through the epitaxial channel adjustment layer and into the well region. The emitter region has the second conductivity type and at least partially defines a channel region in the well region adjacent to the emitter region. A gate oxide layer is on the channel region, and a gate is on the gate oxide layer. Related methods are also disclosed.
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: April 29, 2014
    Assignee: Cree, Inc.
    Inventors: Qingchun Zhang, Sei-Hyung Ryu, Charlotte Jonas, Anant K. Agarwal
  • Publication number: 20140099774
    Abstract: Disclosed are methods for forming fins. In an example embodiment, a method includes providing a substrate that includes at least two elongated structures separated by an isolation region. Each elongated structure comprises a semiconductor alloy of a first semiconductor material and a second semiconductor material, and a relaxed portion of the elongated structure includes the semiconductor alloy in a relaxed and substantially defect-free condition. The method further includes subjecting the substrate to a condensation-oxidation, such that each elongated structure forms a fin and an oxide layer. The fin includes a fin base portion formed of the semiconductor alloy and a fin top portion of the first semiconductor material in a strained condition. The fin top portion is formed by condensation of the first semiconductor material. The oxide layer includes an oxide of the second semiconductor material. The method further includes removing at least some of the oxide layer.
    Type: Application
    Filed: October 7, 2013
    Publication date: April 10, 2014
    Applicant: IMEC
    Inventor: Benjamin Vincent
  • Patent number: 8603879
    Abstract: A method for fabricating a super-junction semiconductor power device with reduced Miller capacitance includes the following steps. An N-type substrate is provided and a P-type epitaxial layer is formed on the N-type substrate. At least a trench is formed in the P-type epitaxial layer followed by forming a buffer layer on interior surface in the trench. An N-type dopant layer is filled into the trench and then the N-type dopant layer is etched to form a recessed structure at an upper portion of the trench. A gate oxide layer is formed, and simultaneously, dopants in the N-type dopant layer diffuse into the P-type epitaxial layer, forming an N-type diffusion layer. Finally, a gate conductor is filled into the recessed structure and an N-type source doped region is formed around the gate conductor in the P-type epitaxial layer.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: December 10, 2013
    Assignee: Anpec Electronics Corporation
    Inventors: Yung-Fa Lin, Shou-Yi Hsu, Meng-Wei Wu, Yi-Chun Shih
  • Patent number: 8592284
    Abstract: Provided are a semiconductor device making it possible to form an element region having a dimension close to a designed dimension, restrain a phenomenon similar to gate-induced drain leakage, and further restrain compressive stress to be applied to the element region by oxidation of a conductive film; and a method for manufacturing the semiconductor device. Trenches are made in a main surface of a semiconductor substrate. By oxidizing the wall surface of each of the trenches, a first oxide film is formed on the wall surface. An embedded conductive film is formed to be embedded into the trench. The embedded conductive film is oxidized in an atmosphere containing an active oxidizing species, thereby forming a second oxide film. A third oxide film is formed on the second oxide film by CVD or coating method.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: November 26, 2013
    Assignee: Renesas Electronics Corporation
    Inventors: Masato Ishibashi, Katsuyuki Horita, Tomohiro Yamashita, Takaaki Tsunomura, Takashi Kuroi
  • Patent number: 8518799
    Abstract: A process of making semiconductor-on-glass substrates having a relatively stiff (e.g. relatively high Young's modulus of 125 or higher) stiffening layer between the silicon film and the glass in an ion implantation thin film transfer process by depositing a stiffening layer or layers on one of the donor wafer or the glass substrate in order to eliminate the canyons and pin holes that otherwise form in the surface of the transferred silicon film during the thin film transfer process. The new stiffening layer may be formed of a material, such as silicon nitride, that also serves as an efficient barrier against penetration of sodium and other harmful impurities from the glass substrate into the silicon film.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: August 27, 2013
    Assignees: Corning Incorporated, S.O.I TEC Silicon on Insulator Technologies
    Inventors: Nadia Ben Mohamed, Ta-Ko Chuang, Jeffrey Scott Cites, Daniel Delprat, Alex Usenko
  • Patent number: 8491799
    Abstract: A method for forming a magnetic tunnel junction cell includes forming a pinning layer, a pinned layer, a dielectric layer and a free layer over a first electrode, forming a second electrode on the free layer, etching the free layer and the dielectric layer using the second electrode as an etch barrier to form a first pattern, forming a prevention layer on a sidewall of the first pattern, and etching the pinned layer and the pinning layer using the second electrode and the prevention layer as an etch barrier to form a second pattern.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: July 23, 2013
    Assignee: Hynix Semiconductor Inc.
    Inventor: Jin-Ki Jung
  • Patent number: 8435850
    Abstract: One aspect of the present subject matter relates to a method for forming strained semiconductor film. According to an embodiment of the method, a crystalline semiconductor bridge is formed over a substrate. The bridge has a first portion bonded to the substrate, a second portion bonded to the substrate, and a middle portion between the first and second portions separated from the substrate. The middle portion of the bridge is bonded to the substrate to provide a compressed crystalline semiconductor layer on the substrate. Other aspects are provided herein.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: May 7, 2013
    Assignee: Micron Technology, Inc.
    Inventor: Leonard Forbes
  • Patent number: 8431457
    Abstract: A method for fabricating a semiconductor device includes forming a plurality of trenches using a first mask. The trenches include source pickup trenches located in outside a termination area and between two adjacent active areas. First and second conductive regions separated by an intermediate dielectric region are formed using a second mask. A first electrical contact to the first conductive region and a second electrical contact to the second conductive region are formed using a third mask and forming a source metal region. Contacts to a gate metal region are formed using a fourth mask. A semiconductor device includes a source pickup contact located outside a termination region and outside an active region of the device.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: April 30, 2013
    Assignee: Alpha and Omega Semiconductor Incorporated
    Inventors: Hong Chang, Yi Su, Wenjun Li, Limin Weng, Gary Chen, Jongoh Kim, John Chen
  • Publication number: 20130009276
    Abstract: The invention relates to a method and resulting structure that can substantially minimize and/or eliminate void formation during an isolation trench isolation fill process for typical trench shaped and goal-post shaped isolation regions. First, a thin thermal oxidation layer is grown on the sidewall of each trench and then a layer of polysilicon is deposited above the oxidation layer and oxidized. In one embodiment, a repeating series of polysilicon deposition and polysilicon oxidation steps are performed until each trench has been completely filled. In another embodiment, within a goal-post shaped trench having a wider upper portion and a narrower lower portion, the remainder of the upper wider trench portion is filled using a conventional high density plasma technique.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 10, 2013
    Inventors: Paul J. Rudeck, Sukesh Sandhu
  • Patent number: 8334167
    Abstract: A method of manufacturing a photoelectric conversion device having a semiconductor substrate, comprises a first step of forming an insulating film on the semiconductor substrate, a second step of forming first holes in the insulating film, a third step of forming, in the insulating film, second holes shallower than the first holes, a fourth step of forming electrically conductive portions by embedding an electrically conductive material in the first holes, and forming planarization assisting portions by embedding the electrically conductive material in the second holes, and a fifth step of polishing the electrically conductive portions, the insulating film, and the planarization assisting portions until the planarization assisting portions are removed, thereby planarizing upper surfaces of the electrically conductive portions and the insulating film.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: December 18, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Akihiro Kawano
  • Patent number: 8329553
    Abstract: A method for manufacturing semiconductor device has forming a plurality of trenches having at least two kinds of aspect ratios on a semiconductor substrate, filling the plurality of trenches with a coating material containing silicon, forming a mask on the coating material in a part of the trenches among the plurality of trenches filled with the coating material, implanting an ion for accelerating oxidation of the coating material into the coating material in the trenches on which the mask is not formed, forming a first insulating film by oxidizing the coating materials into which the ion is implanted, removing the coating material from the part of the trenches after removing the mask and forming a second insulating film in the part of the trenches from which the coating material is removed.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: December 11, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shogo Matsuo, Takeshi Hoshi, Keisuke Nakazawa, Kazuaki Iwasawa
  • Patent number: 8304322
    Abstract: The invention relates to a method and resulting structure that can substantially minimize and/or eliminate void formation during an isolation trench isolation fill process for typical trench shaped and goal-post shaped isolation regions. First, a thin thermal oxidation layer is grown on the sidewall of each trench and then a layer of polysilicon is deposited above the oxidation layer and oxidized. In one embodiment, a repeating series of polysilicon deposition and polysilicon oxidation steps are performed until each trench has been completely filled. In another embodiment, within a goal-post shaped trench having a wider upper portion and a narrower lower portion, the remainder of the upper wider trench portion is filled using a conventional high density plasma technique.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: November 6, 2012
    Assignee: Micron Technology, Inc.
    Inventors: Paul J. Rudeck, Sukesh Sandhu
  • Patent number: 8293618
    Abstract: A method of forming a semiconductor device includes forming a trench on a semiconductor substrate to define an active region, forming a radical oxide layer on a sidewall and a bottom surface of the trench, and forming a nitride layer on the radical oxide layer. The conduction band offset of the radical oxide layer is greater than the conduction band offset of a thermal oxide layer having the same thickness as the radical oxide layer.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: October 23, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dongchan Kim, Sungkweon Baek
  • Patent number: 8241994
    Abstract: A method for fabricating an isolation layer in a semiconductor device, comprising: forming a trench in a semiconductor substrate; forming a flowable insulation layer on the trench and the semiconductor substrate; converting the flowable insulation layer to a silicon oxide layer by implementing a curing process comprising continuously heating the flowable insulation layer; and forming an isolation layer by planarizing the silicon oxide layer.
    Type: Grant
    Filed: December 28, 2009
    Date of Patent: August 14, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventor: Jin Yul Lee
  • Patent number: 8242004
    Abstract: A method of forming a semiconductor device includes the following processes. A groove is formed in a semiconductor substrate. A first spin-on-dielectric layer is formed over a semiconductor substrate. An abnormal oxidation of the first spin-on-dielectric layer is carried out. A surface of the first spin-on-dielectric layer is removed. A second spin-on-dielectric layer is formed over the first spin-on-dielectric layer. A non-abnormal oxidation of the first and second spin-on-dielectric layers is carried out to modify the second spin-on-dielectric layer without modifying the first spin-on-dielectric layer.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: August 14, 2012
    Assignee: Elpida Memory, Inc.
    Inventor: Jiro Miyahara
  • Patent number: 8227309
    Abstract: One aspect of the present subject matter relates to a method for forming strained semiconductor film. According to an embodiment of the method, a crystalline semiconductor bridge is formed over a substrate. The bridge has a first portion bonded to the substrate, a second portion bonded to the substrate, and a middle portion between the first and second portions separated from the substrate. The middle portion of the bridge is bonded to the substrate to provide a compressed crystalline semiconductor layer on the substrate. Other aspects are provided herein.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: July 24, 2012
    Assignee: Micron Technology, Inc.
    Inventor: Leonard Forbes
  • Patent number: 8168548
    Abstract: A method of forming a semiconductor device includes providing a substrate in a vacuum processing tool, the substrate having a strained Ge-containing layer on the substrate and a Si-containing layer on the strained Ge-containing layer, maintaining the substrate at a temperature less than 700° C., and exposing the Si-containing layer to oxidation radicals in an UV-assisted oxidation process to form a Si-containing dielectric layer while minimizing oxidation and strain relaxation in the underlying strained Ge-containing layer. A semiconductor device containing a substrate, a strained Ge-containing layer on the substrate, and a Si-containing dielectric layer formed on the strained Ge-containing layer is provided. The semiconductor device can further contain a gate electrode layer on the Si-containing dielectric layer or a high-k layer on the Si-containing dielectric layer and a gate electrode layer on the high-k layer.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: May 1, 2012
    Assignee: Tokyo Electron Limited
    Inventor: Gert Leusink
  • Patent number: 8163626
    Abstract: Embodiments described herein generally relate to flash memory devices and methods for manufacturing flash memory devices. In one embodiment, a method for selective removal of nitrogen from the nitrided areas of a substrate is provided. The method comprises positioning a substrate comprising a material layer disposed adjacent to an oxide containing layer in a processing chamber, exposing the substrate to a nitridation process to incorporate nitrogen onto the material layer and the exposed areas of the oxide containing layer, and exposing the nitrided material layer and the nitrided areas of the oxide containing layer to a gas mixture comprising a quantity of a hydrogen containing gas and a quantity of an oxygen containing gas to selectively remove nitrogen from the nitrided areas of the oxide containing layer relative to the nitrided material layer using a radical oxidation process.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: April 24, 2012
    Assignee: Applied Materials, Inc.
    Inventors: Johanes Swenburg, David Chu, Theresa Kramer Guarini, Yonah Cho, Udayan Ganguly, Lucien Date
  • Patent number: 8158487
    Abstract: The invention relates to a process for annealing a structure that includes at least one wafer, with the annealing process including conducting a first annealing of the structure in an oxidizing atmosphere while holding the structure in contact with a holder in a first position in order to oxidize at least portion of the exposed surface of the structure, shifting the structure on the holder into a second position in which non-oxidized regions of the structure are exposed, and conducting a second annealing of the structure in an oxidizing atmosphere while holding the structure in the second position. The process provides an oxide layer on the structure.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: April 17, 2012
    Assignee: Soitec
    Inventors: Nicolas Sousbie, Bernard Aspar, Thierry Barge, Chrystelle Lagahe Blanchard
  • Patent number: 8124494
    Abstract: A method for making a semiconductor device by reshaping a silicon surface with a sacrificial layer is presented. In the present invention the steps of forming a sacrificial dielectric layer and removing the sacrificial dielectric layer are repeated multiple times in order to remove sharp edges from the silicon surface near the field oxides. Another aspect of the present invention includes making a MOSFET transistor that incorporates the forming and removing of multiple sacrificial layers into the process.
    Type: Grant
    Filed: July 16, 2007
    Date of Patent: February 28, 2012
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Yu-Hsiung Wang, Wen-Ting Chu, Eric Chen, Hsien-Wei Chin
  • Patent number: 7977205
    Abstract: A method of forming an isolation layer of a semiconductor device includes forming first trenches in an isolation region of a semiconductor substrate. Sidewalls and a bottom surface of each of the first trenches are oxidized by a radical oxidization process to form a first oxide layer. An oxidization-prevention spacer is formed on the sidewalls of each of the first trenches. Second trenches are formed in the isolation region below the corresponding first trenches, wherein each second trench is narrower and deeper than the corresponding first trench. The second trenches are filled with a second oxide layer. The first trenches are filled with an insulating layer.
    Type: Grant
    Filed: June 14, 2010
    Date of Patent: July 12, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventors: Cha Deok Dong, Whee Won Cho, Jung Geun Kim, Cheol Mo Jeong, Suk Joong Kim, Jung Gu Lee
  • Patent number: 7972933
    Abstract: Methods of forming semiconductor devices are provided herein. In some embodiments, a method of forming a semiconductor device may include providing a substrate having an oxide surface and a silicon surface; forming a nitrogen-containing layer on exposed portions of both the oxide and silicon surfaces; and oxidizing the nitrogen-containing layer to selectively remove the nitrogen-containing layer from atop the oxide surface. In some embodiments, an oxide layer is formed atop a remaining portion of the nitrogen-containing layer formed on the silicon feature. In some embodiments, the oxide surface is an exposed surface of a shallow trench isolate region (STI) disposed adjacent to one or more floating gates of a semiconductor device. In some embodiments, the silicon surface is an exposed surface of a silicon or polysilicon floating gate of a semiconductor device.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: July 5, 2011
    Assignee: Applied Materials, Inc.
    Inventors: Christopher S. Olsen, Johanes Swenberg, Udayan Ganguly, Theresa Kramer Guarini, Yonah Cho
  • Patent number: 7968423
    Abstract: A method for fabricating a semiconductor device includes forming a hard mask pattern over a substrate, forming a protection layer by transforming a portion of a sidewall of the hard mask pattern, forming a trench by etching the substrate using the hard mask pattern and the protection layer as an etch barrier, forming an isolation layer by filling the trench with an insulation material, removing the hard mask pattern, and performing a cleaning process. By forming the protection layer, it is possible to prevent the isolation layer from being lost during the removing of the hard mask pattern and the cleaning process and thus prevent generation of a moat.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: June 28, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventor: Young-Kwang Choi
  • Patent number: 7960244
    Abstract: A process for manufacturing an electronic semiconductor device, wherein a SOI wafer is provided, formed by a bottom layer of semiconductor material, an insulating layer, and a top layer of semiconductor material, stacked on top of one another; alignment marks are formed in the top layer; an implanted buried region is formed, aligned to the alignment marks; a hard mask is formed on top of the top layer so as to align it to the alignment marks; using the hard mask, the top layer is selectively removed so as to form a trench extending up to the insulating layer; there a lateral-insulation region in the trench, that is contiguous to the insulating layer and delimits with the latter an insulated well of semiconductor material; and electronic components are formed in the top layer.
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: June 14, 2011
    Assignee: STMicroelectronics, S.r.l.
    Inventors: Salvatore Leonardi, Roberto Modica
  • Patent number: 7951679
    Abstract: First, on a semiconductor region of a first conductivity type, a trapping film is formed which stores information by accumulating charges. Then, the trapping film is formed with a plurality of openings, and impurity ions of a second conductivity type are implanted into the semiconductor region from the formed openings, thereby forming a plurality of diffused layers of the second conductivity type in portions of the semiconductor region located below the openings, respectively. An insulating film is formed to cover edges of the trapping film located toward the openings, and then the semiconductor region is subjected to a thermal process in an atmosphere containing oxygen to oxidize upper portions of the diffused layers. Thereby, insulating oxide films are formed in the upper portions of the diffused layers, respectively. Subsequently, a conductive film is formed over the trapping film including the edges thereof to form an electrode.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: May 31, 2011
    Assignee: Panasonic Corporation
    Inventors: Koji Yoshida, Keita Takahashi, Fumihiko Noro, Masatoshi Arai, Nobuyoshi Takahashi
  • Publication number: 20110117724
    Abstract: A method and system is disclosed for forming an improved isolation structure for strained channel transistors. In one example, an isolation structure is formed comprising a trench filled with a nitrogen-containing liner and a gap filler. The nitrogen-containing liner enables the isolation structure to reduce compressive strain contribution to the channel region.
    Type: Application
    Filed: January 25, 2011
    Publication date: May 19, 2011
    Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chih-Hsin KO, Yee-Chia YEO, Wen-Chin LEE, Chung-Hu GE
  • Patent number: 7939421
    Abstract: A method for fabricating an integrated circuit structure includes the steps of forming a second dielectric layer on a substrate including a first conductive layer and a first dielectric layer, forming the second dielectric layer on the first conductive layer and the first dielectric layer, forming a hole exposing the first conductive layer in the second dielectric layer, forming a barrier layer inside the hole, and forming a second conductive layer on the barrier layer. In one embodiment of the present invention, the forming of the barrier layer comprises the steps of forming a metal layer in the hole, and performing a treating process in an atmosphere including a plasma formed from a gas including oxidant to form a metal oxide layer on the metal layer.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: May 10, 2011
    Assignee: Nanya Technology Corp.
    Inventor: Chiang Hung Lin
  • Patent number: 7897498
    Abstract: The present invention is a method of manufacturing a semiconductor device from a layered body including: a semiconductor substrate; a high dielectric film formed on the semiconductor substrate; and an SiC-based film formed on a position upper than the high dielectric film, the SiC-based film having an anti-reflective function and a hardmask function. The present invention comprises a plasma-processing step for plasma-processing the SiC-based film and the high dielectric film to modify the SiC-based film and the high dielectric film by an action of a plasma; and a cleaning step for wet-cleaning the SiC-based film and the high dielectric film modified in the plasma-processing step to collectively remove the SiC-based film and the high dielectric film.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: March 1, 2011
    Assignee: Tokyo Electron Limited
    Inventors: Glenn Gale, Yoshihiro Hirota, Yusuke Muraki, Genji Nakamura, Masato Kushibiki, Naoki Shindo, Akitaka Shimizu, Shigeo Ashigaki, Yoshihiro Kato
  • Patent number: 7879685
    Abstract: Methods for forming a patterned layer from common layer in a photovoltaic application are provided. The patterned layer is configured to form one or more portions of one or more solar cells on a rigid substrate. A first pass is made with a first laser beam over an area on the common layer. A second pass is made with a second laser beam over approximately the same area on the common layer. The first pass provides a first level of electrical isolation between a first portion and a second portion of the common layer. The second pass provides a second level of electrical isolation between the first portion and the second portion of the common layer. The second level of electrical isolation is greater than the first level of electrical isolation.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: February 1, 2011
    Assignee: Solyndra, Inc.
    Inventors: Erel Milshtein, Benyamin Buller