Conductive Filling In Dielectric-lined Groove (e.g., Polysilicon Backfill) Patents (Class 257/520)
  • Patent number: 11869801
    Abstract: The present invention provides a semiconductor manufacturing method. A substrate having a plurality of first trenches can be provided. The substrate can include a first pattern formed between two adjacent first trenches. A first dielectric layer can be deposited onto the substrate. The first dielectric layer can cover at least one side wall of the first pattern. A second dielectric layer can be deposited onto the substrate. The second dielectric layer can fill the first trenches. The first pattern can be severed to form a second pattern on the substrate. The second dielectric layer can be removed from the first trenches.
    Type: Grant
    Filed: August 20, 2021
    Date of Patent: January 9, 2024
    Assignee: Changxin Memory Technologies, Inc.
    Inventors: Zhan Ying, Qiang Zhang, Yiming Zhu
  • Patent number: 11584854
    Abstract: Described herein are compositions and methods for forming silicon oxide films. In one aspect, the film is deposited from at least one silicon precursor compound, wherein the at least one silicon precursor compound is selected from the following Formulae A and B: as defined herein.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: February 21, 2023
    Assignee: Versum Materials US, LLC
    Inventors: Xinjian Lei, Meiliang Wang, Matthew R. MacDonald, Richard Ho, Manchao Xiao, Suresh Kalpatu Rajaraman
  • Patent number: 11171205
    Abstract: The invention includes semiconductor constructions having trenched isolation regions. The trenches of the trenched isolation regions can include narrow bottom portions and upper wide portions over the bottom portions. Electrically insulative material can fill the upper wide portions while leaving voids within the narrow bottom portions. The trenched isolation regions can be incorporated into a memory array, and/or can be incorporated into an electronic system. The invention also includes methods of forming semiconductor constructions.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: November 9, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Zailong Bian, Janos Fucsko
  • Patent number: 11145711
    Abstract: A capacitor that includes a substrate having a principal surface; a dielectric film on the principal surface of the substrate; and an electrode layer on the dielectric film. The substrate has a recess structure portion with at least one recess portion in a second region outside a first region where the electrode layer overlaps the dielectric layer when viewed in a plan view from a normal direction of the principal surface of the substrate, and the dielectric film is on the recess structure portion.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: October 12, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Tomoyuki Ashimine, Hiroshi Nakagawa, Yasuhiro Murase
  • Patent number: 10996555
    Abstract: A mask frame assembly and an evaporation apparatus are disclosed. The mask frame assembly comprises a frame and a mask plate fixed on the frame. The mask frame assembly is provided with alignment marks, which comprise a first alignment hole arranged in the frame and a second alignment hole arranged in the mask plate. The first alignment hole is a through hole. The mask frame assembly effectively solves a problem in which liquid residuals in alignment holes of the frame interfere with alignment.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: May 4, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., ORDOS YUANSHENG OPTOELECTRONICS CO., LTD.
    Inventors: Fengli Ji, Shanshan Bai, Yinan Liang
  • Patent number: 10854578
    Abstract: Techniques are disclosed herein for creating metal BLs in stacked wafer memory. Using techniques described herein, metal BLs are created on a bottom surface of a wafer. The metal BLs can be created using different processes. In some configurations, a salicide process is utilized. In other configurations, a damascene process is utilized. Using metal reduces the resistance of the BLs as compared to using non-metal diffused BLs. In some configurations, wafers are stacked and bonded together to form three-dimensional memory structures.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: December 1, 2020
    Assignee: Invensas Corporation
    Inventor: Stephen Morein
  • Patent number: 10703915
    Abstract: Described herein are compositions and methods for forming silicon oxide films. In one aspect, the film is deposited from at least one silicon precursor compound, wherein the at least one silicon precursor compound is selected from the following Formulae A and B: as defined herein.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: July 7, 2020
    Assignee: VERSUM MATERIALS US, LLC
    Inventors: Xinjian Lei, Meiliang Wang, Matthew R. MacDonald, Richard Ho, Manchao Xiao, Suresh Kalpatu Rajaraman
  • Patent number: 10674648
    Abstract: Provided is a high-frequency module capable of improving a shielding performance for a specific component. In a high-frequency module 1a, a component 3c that is mounted on a top surface 20a of a multilayer wiring board 2 is surrounded by a shield film 6 coating a surface of a sealing-resin layer 4, a plurality of metallic pins 5a arranged in the sealing-resin layer 4 so as to surround the component 3c, an outer electrode 8c formed on a bottom surface 20b of the multilayer wiring board 2 so as to be located at a position that overlaps with the component 3c when viewed in a direction perpendicular to the top surface 20a of the multilayer wiring board 2, and a plurality of connection conductors (via conductors 10b and pad electrodes 11) connecting the metallic pins 5a and the outer electrode 8c to one another.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: June 2, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Yoshihito Otsubo
  • Patent number: 10667381
    Abstract: A high frequency module includes a plurality of components on an upper surface of a multilayer wiring substrate, a sealing resin layer on the upper surface of the multilayer wiring substrate, a shield wall surrounding one of the components within the sealing resin layer, and a shield film on an upper surface of the sealing resin layer. The shield film covers a portion of the upper surface of the sealing resin layer that overlaps the one of the components but not the other components viewed from a direction perpendicular to the upper surface of the multilayer wiring substrate. An upper end of the shield wall is exposed from the upper surface of the sealing resin layer to be connected to the shield film, and a lower end thereof is exposed from a lower surface of the sealing resin layer to be connected to the multilayer wiring substrate.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: May 26, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Yoshihito Otsubo
  • Patent number: 10573635
    Abstract: A transient voltage suppression device with improved electrostatic discharge (ESD) robustness includes a semiconductor substrate having a first conductivity type, a first doped well having a second conductivity type, a first heavily-doped area having the first conductivity type, a second doped well having the second conductivity type, a second heavily-doped area having the first conductivity type, and a first current blocking structure. The first doped well is arranged in the semiconductor substrate. The first heavily-doped area is arranged in the first doped well. The second doped well is arranged in the semiconductor substrate. The second heavily-doped area is arranged in the second doped well. The first current blocking structure is arranged in the semiconductor substrate, spaced from the bottom of the semiconductor substrate, and arranged between the first doped well and the second doped well.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: February 25, 2020
    Assignee: Amazing Microelectronics Corp.
    Inventors: Chih-Wei Chen, Yu-Shu Shen, Kun-Hsien Lin
  • Patent number: 10529710
    Abstract: A method for manufacturing a semiconductor device having a local interconnect structure includes providing a semiconductor substrate having a gate on an active region, a hardmask layer on the gate, and a first dielectric layer on the gate, etching the first dielectric layer to form a first interconnect trench on the active region, forming a metal silicide layer at a bottom of the first interconnect trench, forming a first metal layer filling the first interconnect trench, forming a second dielectric layer on the gate and the first interconnect trench, etching the second dielectric layer to form a second interconnect trench in a staggered pattern relative to the first interconnect trench, etching the second dielectric layer to form a third interconnect trench, forming a second metal layer in the second interconnect trench and in the third interconnect trench to form the local interconnect structure.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: January 7, 2020
    Assignees: SEMICONDUCTOR MANUFACTURING INTERNATIONAL (SHANGHAI) CORPORATION, SEMICONDUCTOR MANUFACTURING INTERNATIONAL (BEIJING) CORPORATION
    Inventors: Fenghua Fu, Yunchu Yu, Yihua Shen, Jian Pan
  • Patent number: 10421766
    Abstract: Bisaminoalkoxysilanes of Formula I, and methods using same, are described herein: R1Si(NR2R3)(NR4R5)OR6??I where R1 is selected from hydrogen, a C1 to C10 linear alkyl group, a C3 to C10 branched alkyl group, a C3 to C10 cyclic alkyl group, a C3 to C10 alkenyl group, a C3 to C10 alkynyl group, a C4 to C10 aromatic hydrocarbon group; R2, R3, R4, and R5 are each independently selected from hydrogen, a C4 to C10 branched alkyl group, a C3 to C10 cyclic alkyl group, a C3 to C10 alkenyl group, a C3 to C10 alkynyl group, and a C4 to C10 aromatic hydrocarbon group; R6 is selected from a C1 to C10 linear alkyl group, a C3 to C10 branched alkyl group, a C3 to C10 cyclic alkyl group, a C3 to C10 alkenyl group, a C2 to C10 alkynyl group, and a C4 to C10 aromatic hydrocarbon group.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: September 24, 2019
    Assignee: VERSUM MATERIALS US, LLC
    Inventors: Daniel P. Spence, Xinjian Lei, Ronald Martin Pearlstein, Manchao Xiao, Jianheng Li
  • Patent number: 10269664
    Abstract: A semiconductor structure with a stop layer for planarization process therein and a method for forming the same is disclosed. The method includes the steps of: forming a trench in a substrate and between active areas; filling the trench with isolation layer; doping the isolation layer with an element to form a doped isolation region; annealing the doped isolation region; and planarizing the annealed and doped isolation region and measuring a planarization depth thereof. The coefficients of thermal expansion (CTEs) of the stop layer, the dielectric layer, and the active area are different.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: April 23, 2019
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Jia-Ming Lin, Wei-Ken Lin, Shiu-Ko JangJian, Chun-Che Lin
  • Patent number: 10043811
    Abstract: A semiconductor structure for preventing row hammering issue in DRAM cell is provided in the present invention. The structure includes a trench with a gate dielectric, an n-type work function metal layer, a TiN layer conformally formed within, and a buried word line filled in the trench.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: August 7, 2018
    Assignees: UNITED MICROELECTRONICS CORP., Fujian Jinhua Integrated Circuit Co., Ltd.
    Inventors: Chih-Chieh Tsai, Pin-Hong Chen, Tzu-Chieh Chen, Tsun-Min Cheng, Yi-Wei Chen, Hsin-Fu Huang, Chi-Mao Hsu, Shih-Fang Tzou
  • Patent number: 9613848
    Abstract: A method for forming a dielectric structure includes forming an auxiliary layer over a substrate, and forming a hole within the auxiliary layer. A fill material is deposited into the hole. The auxiliary layer is removed to form the dielectric structure having a negative taper. The dielectric structure has a top critical dimension greater than a bottom critical dimension.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: April 4, 2017
    Assignee: Infineon Technologies AG
    Inventor: Manfred Engelhardt
  • Patent number: 9530849
    Abstract: A transistor having a source region and a drain region which are separately formed in a substrate, a trench which is defined in the substrate between the source region and the drain region, and a gate electrode which is formed in the trench. The gate electrode includes a first electrode buried over a bottom of the trench; a second electrode formed over the first electrode; and a liner electrode having an interface part which is positioned between the first electrode and the second electrode and a side part, which is positioned on sidewalls of the second electrode and overlaps with the source region and the drain region.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: December 27, 2016
    Assignee: SK Hynix Inc.
    Inventors: Tae-Kyung Oh, Su-Ho Kim, Jin-Yul Lee
  • Patent number: 9478554
    Abstract: A semiconductor device having a high degree of freedom of layout has a first part AR1, in which a plurality of p-type wells PW and n-type wells NW are alternately arranged to be adjacent to each other along an X-axis direction. A common power feeding region (ARP2) for the plurality of wells PW is arranged on one side so as to interpose the AR1 in a Y-axis direction, and a common power feeding region (ARN2) for the plurality of wells NW is arranged on the other side. In the power feeding region (ARP2) for the PW wells, a p+-type power-feeding diffusion layer P+(DFW) having an elongate shape extending in the X-axis direction is formed. A plurality of gate layers GT extending in the X-axis direction to cross the boundary between the PW and NW wells are arranged in the AR1, and a plurality of MIS transistors are correspondingly formed.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: October 25, 2016
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Ken Shibata, Yuta Yanagitani
  • Patent number: 9331267
    Abstract: Electronic devices having semiconductor elements and methods for fabricating such devices including, a method for fabricating an electronic device including a semiconductor memory, which includes: forming a sacrificial layer on a substrate including a first region and a second region; selectively etching the sacrificial layer and the substrate of the first region to form a trench; forming a first gate that fills a part of the trench in the first region; forming a gate protection layer on the first gate to fill the remaining part of the trench; removing the sacrificial layer of the first region to form a grooved portion surrounded by the gate protection layer; forming a conductive plug to cover the grooved portion; removing the sacrificial layer of the second region; and forming a second gate on the substrate of the second region.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: May 3, 2016
    Assignee: SK hynix Inc.
    Inventors: Seok-Pyo Song, Sung-Woong Chung, Jong-Han Shin
  • Patent number: 9299668
    Abstract: A device for protecting a set of N nodes from electrostatic discharges, wherein N is greater than or equal to three, includes a set of N units respectively possessing N first terminals respectively connected to the N nodes and N second terminals connected together to form a common terminal. Each unit includes at least one MOS transistor including a parasitic transistor connected between a pair of the N nodes and configured, in the presence of a current pulse between the pair of nodes, to operate, at least temporarily, in a hybrid mode including MOS-type operation in a sub-threshold mode and operation of the bipolar transistor.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: March 29, 2016
    Assignee: STMicroelectronics SA
    Inventors: Johan Bourgeat, Philippe Galy
  • Patent number: 9000514
    Abstract: Semiconductor device fabrication method and devices are disclosed. A device may be fabricated by forming in a semiconductor layer; filling the trench with an insulating material; removing selected portions of the insulating material leaving a portion of the insulating material in a bottom portion of the trench; forming one or more spacers on one or more sidewalls of a remaining portion of the trench; anisotropically etching the insulating material in the bottom portion of the trench using the spacers as a mask to form a trench in the insulator; removing the spacers; and filling the trench in the insulator with a conductive material. Alternatively, an oxide-nitride-oxide (ONO) structure may be formed on a sidewall and at a bottom of the trench and one or more conductive structures may be formed in a portion of the trench not occupied by the ONO structure.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: April 7, 2015
    Assignee: Alpha and Omega Semiconductor Incorporated
    Inventors: Yeeheng Lee, Sung-Shan Tai, Hong Chang, John Chen
  • Patent number: 8987902
    Abstract: A semiconductor device includes a semiconductor substrate. The semiconductor substrate includes a first surface, a second surface, and a through hole that extends through the semiconductor substrate from the first surface to the second surface. An insulating layer covers the first surface and includes an opening at a location facing the through hole. An insulating film covers an inner wall of the through hole and an inner wall of the opening. A through electrode is formed in the through hole and the opening that are covered by the insulating film. A first connecting terminal is formed integrally with the through electrode to cover one end of the through electrode exposed from the insulating layer. The first connecting terminal has a larger size than the through electrode as viewed from above.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: March 24, 2015
    Assignee: Shinko Electric Industries Co., Ltd.
    Inventor: Syota Miki
  • Patent number: 8963281
    Abstract: Techniques are described to simultaneously form an isolation trench and a handle wafer contact without additional mask steps. In one or more implementations, an isolation trench and a handle wafer contact trench are simultaneously formed in a substrate. The substrate includes an insulating layer that defines a trench bottom of the handle wafer contact trench. A handle wafer is bonded to a bottom surface of the substrate. An oxide insulating layer is deposited in the isolation trench and the handle wafer contact trench. The oxide insulating layer is then etched so that the oxide insulating layer covering the trench bottom is at least partially removed. The trench bottom is then etched so that a top surface of the handle wafer is at least partially exposed. The handle wafer contact trench may then be at least partially filled with an electrical conductive material.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: February 24, 2015
    Assignee: Maxim Integrated Products, Inc.
    Inventor: Christopher S. Blair
  • Publication number: 20150001672
    Abstract: A bi-directional electrostatic discharge diode structure consumes substantially less silicon real estate and provides ultra-low capacitance by utilizing a p? epitaxial layer that touches and lies between an n+ lower epitaxial layer and an n+ upper epitaxial layer. A metal contact touches and lies over a p+ layer, which touches and lies over the n+ upper epitaxial layer.
    Type: Application
    Filed: June 30, 2013
    Publication date: January 1, 2015
    Inventors: Toshiyuki Tani, Akihiko Yamashita, Motoaki Kusamaki, Kentaro Takahashi
  • Patent number: 8921202
    Abstract: The invention provides a semiconductor device. A buried layer is formed in a substrate. A first deep trench contact structure is formed in the substrate. The first deep trench contact structure comprises a conductor and a liner layer formed on a sidewall of the conductor. A bottom surface of the first deep trench contact structure is in contact with the buried layer.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: December 30, 2014
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Geeng-Lih Lin, Kwang-Ming Lin, Shang-Hui Tu, Jui-Chun Chang
  • Patent number: 8907411
    Abstract: A memory device and a manufacturing method of the same are provided. The memory device includes a substrate, a memory material layer, a first dielectric layer, a first gate layer, a second gate layer, and a source/drain (S/D) region. The substrate has a trench, and the memory material layer is formed on a sidewall of the trench. The first gate layer, the second gate layer, and the first dielectric layer, which is formed between the first gate layer and the second gate layer, are filled in the trench. The source/drain region is formed in the substrate and adjacent to the memory material layer. The first gate layer is extended in a direction perpendicular to a direction in which the source/drain region is extended.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: December 9, 2014
    Assignee: Macronix International Co., Ltd.
    Inventor: Chi-Sheng Peng
  • Patent number: 8895389
    Abstract: A method is provided for fabricating a semiconductor structure. The method includes providing a semiconductor substrate having a plurality of first doped regions and second doped regions; and forming a first dielectric layer on the semiconductor substrate. The method also includes forming a first gate dielectric layer and a second gate dielectric layer; and forming a first metal gate and a second metal gate on the first gate dielectric layer and the second gate dielectric layer, respectively. Further, the method includes forming a third dielectric layer on the second metal gate; and forming a second dielectric layer on the first dielectric layer. Further, the method also includes forming at least one opening exposing at least one first metal gate and one first doped region; and forming a contact layer contacting with the first metal gate and the first doped region to be used as a share contact structure.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: November 25, 2014
    Assignee: Semiconductor Manufacturing International Corp
    Inventor: Zhongshan Hong
  • Patent number: 8890262
    Abstract: Provided is a semiconductor device (e.g., transistor such as a FinFET or planar device) having a a liner layer and a metal layer (e.g., Tungsten (W)) in a trench (e.g., via CVD and/or ALD). A single chamber (e.g., an extreme fill chamber) will be utilized to separately etch back the liner layer and the metal layer. In general, the liner layer may be etched back further than the metal layer to provide for larger contact and lower resistance. After etching is complete, a bottom-up fill/growth of metal (e.g., W) will be performed (e.g., via CVD in a W chamber or the like) to increase the presence of gate metal in the trench.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: November 18, 2014
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Vimal Kamineni, Ruilong Xie
  • Patent number: 8878289
    Abstract: In the semiconductor device, a line-type buried gate is formed by burying a non-operating gate (isolation gate) with a polysilicon material to reduce a work function and a Gate Induced Drain Leakage (GIDL) caused by the non-operating gate, resulting in improvement of refresh characteristics of the semiconductor device. Operating gates including a metal conductive material may be formed in a separate step.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: November 4, 2014
    Assignee: SK hynix Inc.
    Inventor: Kyung Do Kim
  • Patent number: 8853816
    Abstract: An isolated semiconductor circuit comprising: a first sub-circuit and a second sub-circuit; a backend that includes an electrically isolating connector between the first and second sub-circuits; a lateral isolating trench between the semiconductor portions of the first and second sub-circuits, wherein the lateral isolating trench extends along the width of the semiconductor portions of the first and second sub-circuits, wherein one end of the isolating trench is adjacent the backend, and wherein the isolating trench is filled with an electrically isolating material.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: October 7, 2014
    Assignee: NXP B.V.
    Inventors: Peter Gerard Steeneken, Roel Daamen, Gerard Koops, Jan Sonsky, Evelyne Gridelet, Coenraad Cornelis Tak
  • Patent number: 8772902
    Abstract: Line trenches are formed in a stack of a bulk semiconductor substrate and an oxygen-impermeable layer such that the depth of the trenches in the bulk semiconductor substrate is greater than the lateral spacing between a pair of adjacently located line trenches. Oxygen-impermeable spacers are formed on sidewalls of the line trenches. An isotropic etch, either alone or in combination with oxidation, removes a semiconductor material from below the oxygen-impermeable spacers to expand the lateral extent of expanded-bottom portions of the line trenches, and to reduce the lateral spacing between adjacent expanded-bottom portions. The semiconductor material around the bottom portions is oxidized to form a semiconductor oxide portion that underlies multiple oxygen-impermeable spacers. Semiconductor-on-insulator (SOI) portions are formed above the semiconductor oxide portion and within the bulk semiconductor substrate.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: July 8, 2014
    Assignee: International Business Machines Corporation
    Inventors: Solomon Assefa, William M. J. Green, Marwan H. Khater, Yurii A. Vlasov
  • Patent number: 8748983
    Abstract: An embedded source/drain MOS transistor and a formation method thereof are provided. The embedded source/drain MOS transistor comprises: a semiconductor substrate; a gate structure on the semiconductor substrate; and a source/drain stack embedded in the semiconductor substrate at both sides of the gate structure with an upper surface of the source/drain stack being exposed, wherein the source/drain stack comprises a dielectric layer and a semiconductor layer above the dielectric layer. The present invention can cut off the path for the leakage current from the source region and the drain region to the semiconductor substrate, thereby reducing the leakage current from the source region and the drain region to the semiconductor substrate.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: June 10, 2014
    Assignee: Institute of Microelectronics, Chinese Academy of Sciences
    Inventors: Huicai Zhong, Chao Zhao, Qingqing Liang
  • Patent number: 8736017
    Abstract: A semiconductor device includes a substrate including a trench, a buried gate filling a part of the trench, an inter-layer dielectric layer formed on the buried gate to gap-fill the rest of the trench, and a protection layer covering substantially an entire surface of the substrate including the inter-layer dielectric layer.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: May 27, 2014
    Assignee: SK Hynix Inc.
    Inventors: Se-Aug Jang, Hong-Seon Yang, Ja-Chun Ku, Seung-Ryong Lee
  • Patent number: 8674283
    Abstract: A method of fabricating an image sensor includes the steps of: forming at least two photosites in a semiconductor substrate; forming a trench between the photosites; forming a thin liner on at least the sidewalls of the trench; depositing a conductive material having a first refractive index in the trench; and forming a region surrounded by the conductive material and having a second refractive index lower than the first index of refraction within the conductive material in the trench.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: March 18, 2014
    Assignees: STMicroelectronics (Crolles 2) SAS, STMicroelectronics SA
    Inventors: Francois Roy, Flavien Hirigoyen, Julien Michelot
  • Patent number: 8659117
    Abstract: A schottky diode includes a drift region of a first conductivity type and a lightly doped silicon region of the first conductivity type in the drift region. A conductor layer is over and in contact with the lightly doped silicon region to form a schottky contact with the lightly doped silicon region. A highly doped silicon region of the first conductivity type is in the drift region and is laterally spaced from the lightly doped silicon region such that upon biasing the schottky diode in a conducting state, a current flows laterally between the lightly doped silicon region and the highly doped silicon region through the drift region. A plurality of trenches extend into the drift region perpendicular to the current flow. Each trench has a dielectric layer lining at least a portion of the trench sidewalls and at least one conductive electrode.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: February 25, 2014
    Assignee: Fairchild Semiconductor Corporation
    Inventor: Christopher Boguslaw Kocon
  • Patent number: 8659116
    Abstract: A transistor is formed inside an isolation structure which includes a floor isolation region and a trench extending from the surface of the substrate to the floor isolation region. The trench may be filled with a dielectric material or may have a conductive material in a central portion with a dielectric layer lining the walls of the trench.
    Type: Grant
    Filed: February 1, 2010
    Date of Patent: February 25, 2014
    Assignee: Advanced Analogic Technologies Incorporated
    Inventors: Donald R. Disney, Richard K. Williams
  • Publication number: 20140021577
    Abstract: Methods of forming semiconductor structures that include bodies of a semiconductor material disposed between rails of a dielectric material are disclosed. Such methods may include filling a plurality of trenches in a substrate with a dielectric material and removing portions of the substrate between the dielectric material to form a plurality of openings. In some embodiments, portions of the substrate may be undercut to form a continuous void underlying the bodies and the continuous void may be filled with a conductive material. In other embodiments, portions of the substrate exposed within the openings may be converted to a silicide material to form a conductive material under the bodies. For example, the conductive material may be used as a conductive line to electrically interconnect memory device components. Semiconductor structures and devices formed by such methods are also disclosed.
    Type: Application
    Filed: September 23, 2013
    Publication date: January 23, 2014
    Applicant: Micron Technology, Inc.
    Inventors: David H. Wells, Gurtej S. Sandhu
  • Patent number: 8623731
    Abstract: Electrostatic discharge devices and methods of forming thereof are disclosed. In one embodiment, a semiconductor device includes an electrostatic discharge (ESD) device region disposed within a semiconductor body. A first ESD device is disposed in a first region of the ESD device region, and a second ESD device disposed in a second region of the ESD device region. The second region is separated from the first region by a first trench.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: January 7, 2014
    Assignee: Infineon Technologies AG
    Inventor: Kai Esmark
  • Patent number: 8587085
    Abstract: There is provided a technology capable of providing desirable operation characteristics in a field effect transistor formed in an active region surrounded by a trench type element isolation part. An element isolation part includes trench type element isolation films, diffusion preventive films each including a silicon film or a silicon oxide film, and having a thickness of 10 to 20 nm formed over the top surfaces of the trench type element isolation films, and silicon oxide films each with a thickness of 0.5 to 2 nm formed over the top surfaces of the diffusion preventive films. The composition of the diffusion preventive film is SiOx (0?x<2). Each composition of the trench type element isolation films and the silicon oxide films is set to be SiO2.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: November 19, 2013
    Assignee: Renesas Electronics Corporation
    Inventor: Katsuyuki Horita
  • Patent number: 8530299
    Abstract: An electronic device including an integrated circuit can include a buried conductive region and a semiconductor layer overlying the buried conductive region, and a vertical conductive structure extending through the semiconductor layer and electrically connected to the buried conductive region. The integrated circuit can further include a doped structure having an opposite conductivity type as compared to the buried conductive region, lying closer to an opposing surface than to a primary surface of the semiconductor layer, and being electrically connected to the buried conductive region. The integrated circuit can also include a well region that includes a portion of the semiconductor layer, wherein the portion overlies the doped structure and has a lower dopant concentration as compared to the doped structure. In other embodiment, the doped structure can be spaced apart from the buried conductive region.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: September 10, 2013
    Assignee: Semiconductor Components Industries, LLC
    Inventors: Gary H. Loechelt, Gordon M. Grivna
  • Patent number: 8508018
    Abstract: Methods for fabricating integrated circuit electrical interconnects and electrical interconnects are provided. Methods include providing a substrate having a surface, the surface having a feature formed therein wherein the feature is a trench or via, depositing a metal layer, the metal of the metal layer being selected from the group consisting of Ru, Co, Pt, Ir, Pd, Re, and Rh, onto surfaces of the feature, depositing a copper seed layer wherein the copper seed layer comprises a dopant and the dopant is selected from the group consisting of Mn, Mg, MgB2. P, B, Al, Co and combinations thereof, onto the metal layer, and depositing copper into the feature. Devices comprising copper interconnects having metal liner layers are provided. Devices having liner layers comprising ruthenium are provided.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: August 13, 2013
    Assignee: Intel Corporation
    Inventors: Rohan N. Akolkar, Sridhar Balakrishnan, James S. Clarke, Christopher J. Jezewski, Philip Yashar
  • Patent number: 8461661
    Abstract: A polysilicon-filled isolation trench in a substrate is effective to isolate adjacent semiconductor devices from one another. A silicon nitride cap is provided to protect the polysilicon in the isolation trench from subsequent field oxidation. The cap has lateral boundaries that extend between the side boundaries of the polysilicon and the sidewalls of the trench. Subsequent field oxide regions formed adjacent to the trench establish a gap dimension from the substrate to a top surface of the field oxide regions adjacent to the polysilicon side boundaries that is no less than half of the field oxide thickness.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: June 11, 2013
    Assignee: Polar Semiconductor, Inc.
    Inventor: Noel Hoilien
  • Patent number: 8368170
    Abstract: A method of forming an integrated circuit structure includes providing a semiconductor substrate; and forming a first and a second MOS device. The first MOS device includes a first active region in the semiconductor substrate; and a first gate over the first active region. The second MOS device includes a second active region in the semiconductor substrate; and a second gate over the second active region. The method further include forming a dielectric region between the first and the second active regions, wherein the dielectric region has an inherent stress; and implanting the dielectric region to form a stress-released region in the dielectric region, wherein source and drain regions of the first and the second MOS devices are not implanted during the step of implanting.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: February 5, 2013
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Harry-Hak-Lay Chuang, Kong-Beng Thei, Mong-Song Liang
  • Patent number: 8357972
    Abstract: A semiconductor power device includes a substrate, a first semiconductor layer on the substrate, a second semiconductor layer on the first semiconductor layer, and a third semiconductor layer on the second semiconductor layer. At least a recessed epitaxial structure is disposed within a cell region and the recessed epitaxial structure may be formed in a pillar or stripe shape. A first vertical diffusion region is disposed in the third semiconductor layer and the recessed epitaxial structure is surrounded by the first vertical diffusion region. A source conductor is disposed on the recessed epitaxial structure and a trench isolation is disposed within a junction termination region surrounding the cell region. In addition, the trench isolation includes a trench, a first insulating layer on an interior surface of the trench, and a conductive layer filled into the trench, wherein the source conductor connects electrically with the conductive layer.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: January 22, 2013
    Assignee: Anpec Electronics Corporation
    Inventors: Yung-Fa Lin, Shou-Yi Hsu, Meng-Wei Wu, Main-Gwo Chen, Yi-Chun Shih
  • Patent number: 8354730
    Abstract: A structure obtaining a desired integrated circuit by sticking together a plurality of semiconductor substrates and electrically connecting integrated circuits formed on semiconductor chips of the respective semiconductor substrates is provided, and a penetrating electrode penetrating between a main surface and a rear surface of each of the semiconductor substrates and a penetrating separation portion separating the penetrating electrode are separately arranged. Thereby, after forming an insulation trench portion for formation of the penetrating separation portion on the semiconductor substrate, a MIS•FET is formed, and then, a conductive trench portion for formation of the penetrating electrode can be formed. Therefore, element characteristics of a semiconductor device having a three-dimensional structure can be improved.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: January 15, 2013
    Assignees: Hitachi, Ltd., Honda Motor Co., Ltd.
    Inventors: Satoshi Moriya, Toshio Saito, Goichi Yokoyama, Tsuyoshi Fujiwara, Hidenori Sato, Nobuaki Miyakawa
  • Patent number: 8350355
    Abstract: Electrostatic discharge devices and methods of forming thereof are disclosed. In one embodiment, a semiconductor device includes an electrostatic discharge (ESD) device region disposed within a semiconductor body. A first ESD device is disposed in a first region of the ESD device region, and a second ESD device disposed in a second region of the ESD device region. The second region is separated from the first region by a first trench.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: January 8, 2013
    Assignee: Infineon Technologies AG
    Inventor: Kai Esmark
  • Publication number: 20130001739
    Abstract: Methods of forming semiconductor structures that include bodies of a semiconductor material disposed between rails of a dielectric material are disclosed. Such methods may include filling a plurality of trenches in a substrate with a dielectric material and removing portions of the substrate between the dielectric material to form a plurality of openings. In some embodiments, portions of the substrate may be undercut to form a continuous void underlying the bodies and the continuous void may be filled with a conductive material. In other embodiments, portions of the substrate exposed within the openings may be converted to a silicide material to form a conductive material under the bodies. For example, the conductive material may be used as a conductive line to electrically interconnect memory device components. Semiconductor structures and devices formed by such methods are also disclosed.
    Type: Application
    Filed: July 1, 2011
    Publication date: January 3, 2013
    Applicant: MICRON TECHNOLOGY, INC.
    Inventors: David H. Wells, Gurtej S. Sandhu
  • Patent number: 8334451
    Abstract: A photovoltaic (PV) cell device comprises a first semiconductor substrate; a second semiconductor substrate bonded to the first semiconductor substrate; an insulating layer provided between the first and second substrates to electrically isolate the first substrate from the second substrate; a plurality of PV cells defined on the first substrate, each PV cell including a n-type region and a p-type region; a plurality of vertical trenches provided in the first substrate to separated the PV cells, the vertical trenches terminating at the insulating layer; a plurality of isolation structures provided within the vertical trenches, each isolation structure including a first isolation layer including oxide and a second isolation layer including polysilicon; and an interconnect layer patterned to connect the PV cells to provide X number of PV cells in series and Y number of PV cells in parallel.
    Type: Grant
    Filed: October 4, 2004
    Date of Patent: December 18, 2012
    Assignee: IXYS Corporation
    Inventors: Nestore Polce, Ronald P. Clark, Nathan Zommer
  • Patent number: 8330247
    Abstract: The invention relates to a semiconductor arrangement and method for production thereof, wherein the semiconductor arrangement is provided with an integrated circuit arranged on a substrate. The integrated circuit is structured on the front face of the substrate and at least one capacitor is connected to the integrated circuit, wherein the at least one capacitor is designed as a monolithic deep structure in trenches. The trenches are arranged in at least one first group and at least one second group, the trenches of a group running essentially parallel to each other and the first and second group are at an angle to each other, essentially at right angles to each other.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: December 11, 2012
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventor: Norman Marenco
  • Patent number: 8247884
    Abstract: Disclosed is a semiconductor structure for producing a handle wafer contact in trench insulated SOI discs which may be used as a deep contact (7, 6, 30?) to the handle wafer (1) of a thick SOI disc as well as for a trench insulation (40). Therein, the same method steps are used for both structures which are used as deep contact to the handle wafer of the thick SOI disc as well as trench insulation.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: August 21, 2012
    Assignee: X-Fab Semiconductor Foundries AG
    Inventor: Ralf Lerner
  • Patent number: 8222695
    Abstract: An electronic device, including an integrated circuit, can include a buried conductive region and a semiconductor layer overlying the buried conductive region, wherein the semiconductor layer has a primary surface and an opposing surface lying closer to the buried conductive region. The electronic device can also include a first doped region and a second doped region spaced apart from each other, wherein each is within the semiconductor layer and lies closer to primary surface than to the opposing surface. The electronic device can include current-carrying electrodes of transistors. A current-carrying electrode of a particular transistor includes the first doped region and is a source or an emitter and is electrically connected to the buried conductive region. Another current-carrying electrode of a different transistor includes the second doped region and is a drain or a collector and is electrically connected to the buried conductive region.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: July 17, 2012
    Assignee: Semiconductor Components Industries, LLC
    Inventors: Gary H. Loechelt, Gordon M. Grivna