Recessed Region Having Shape Other Than Rectangular, E.g., Rounded Or Oblique Shape (epo) Patents (Class 257/E21.555)
  • Patent number: 10170474
    Abstract: A semiconductor structure, such as a microchip that includes a finFET, includes fins that have a 2D material, such as Graphene, upon at least the fin sidewalls. The thickness of the 2D material sidewall may be tuned to achieve desired finFET band gap control. Neighboring fins of the semiconductor structure form fin wells. The semiconductor structure may include a fin cap upon each fin and the 2D material is formed upon the sidewalls of the fin and the bottom surface of the fin wells. The semiconductor structure may include a well-plug at the bottom of the fin wells and the 2D material is formed upon the sidewalls and upper surface of the fins. The semiconductor structure may include both fin caps and well-plugs such that the 2D material is formed upon the sidewalls of the fins.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: January 1, 2019
    Assignee: International Business Machines Corporation
    Inventors: Sami Rosenblatt, Rasit O. Topaloglu
  • Patent number: 9466528
    Abstract: A method of making a structure includes forming a first supporting member over a substrate, the first supporting member comprising a first material and having a first width defined along a reference plane. The method further includes forming a second supporting member over the substrate, the second supporting member having a second width defined along the reference plane, and the first supporting member and the second supporting member being separated by a gap region. The first width is at least 10 times the second width, and a gap width of the gap region being from 5 to 30 times the second width.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: October 11, 2016
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Chia-Chu Liu, Yi-Shien Mor, Kuei-Shun Chen, Yu Lun Liu, Han-Hsun Chang, Shiao-Chian Yeh
  • Patent number: 8921183
    Abstract: A method for fabricating a trench isolation structure is described. A trench is formed in a substrate. A liner layer is formed at least in the trench. A precursor layer is formed at least on the sidewalls of the trench. The precursor layer is converted to an insulating layer that has a larger volume than the precursor layer and fills up the trench.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: December 30, 2014
    Assignee: Nanya Technology Corporation
    Inventors: Jen-Jui Huang, Hung-Ming Tsai
  • Patent number: 8513084
    Abstract: Disclosed are embodiments of a bipolar or heterojunction bipolar transistor and a method of forming the transistor. The transistor can incorporate a dielectric layer sandwiched between an intrinsic base layer and a raised extrinsic base layer to reduce collector-base capacitance Ccb, a sidewall-defined conductive strap for an intrinsic base layer to extrinsic base layer link-up region to reduce base resistance Rb and a dielectric spacer between the extrinsic base layer and an emitter layer to reduce base-emitter Cbe capacitance. The method allows for self-aligning of the emitter to base regions and incorporates the use of a sacrificial dielectric layer, which must be thick enough to withstand etch and cleaning processes and still remain intact to function as an etch stop layer when the conductive strap is subsequently formed. A chemically enhanced high pressure, low temperature oxidation (HIPOX) process can be used to form such a sacrificial dielectric layer.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: August 20, 2013
    Assignee: International Business Machines Corporation
    Inventors: David L. Harame, Russell T. Herrin, Qizhi Liu
  • Patent number: 8093617
    Abstract: A microelectronic chip comprises two parallel main faces and side faces. At least one of the faces comprises a recess provided with at least one electrical connection element and forming a housing for a wire element. The wire element simultaneously constitutes both an electrical connection between the chip and the outside via said connection element and a flexible mechanical support for said chip.
    Type: Grant
    Filed: June 21, 2007
    Date of Patent: January 10, 2012
    Assignee: Commissariat à l'Energie Atomique
    Inventors: Dominique Vicard, Bruno Mourey, Jean Brun
  • Patent number: 8071481
    Abstract: A multi-step etching process produces trench openings in a silicon substrate that are immediately adjacent transistor structures formed over the substrate surface. The multi-step etching process is a Br-based etching operation with one step including nitrogen and a further step deficient of nitrogen. The etching process does not attack the transistor structure and forms an opening bounded by upper surfaces that extend downwardly from the substrate surface and are substantially vertical, and lower surfaces that bulge outwardly from the upper vertical sections and undercut the transistor structure. The aggressive undercut produces a desirable stress in the etched silicon surface. The openings are then filled with a suitable source/drain material and SSD transistors with desirable Idsat characteristics may then be formed.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: December 6, 2011
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Ta-Wei Kao, Shiang-Bau Wang, Ming-Jie Huang, Chi-Hsi Wu, Shu-Yuan Ku
  • Patent number: 7935602
    Abstract: The invention includes methods of forming isolation regions. An opening can be formed to extend into a semiconductor material, and an upper periphery of the opening can be protected with a liner while a lower periphery is unlined. The unlined portion can then be etched to form a widened region of the opening. Subsequently, the opening can be filled with insulative material to form an isolation region. Transistor devices can then be formed on opposing sides of the isolation region, and electrically isolated from one another with the isolation region. The invention also includes semiconductor constructions containing an electrically insulative isolation structure extending into a semiconductor material, with the structure having a bulbous bottom region and a stem region extending upwardly from the bottom region to a surface of the semiconductor material.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: May 3, 2011
    Assignee: Micron Technology, Inc.
    Inventors: Hongmei Wang, Fred D. Fishburn, Janos Fucsko, T. Earl Allen, Richard H. Lane, Robert J. Hanson, Kevin R. Shea
  • Patent number: 7863677
    Abstract: A semiconductor device and a method of fabricating the same are provided. The semiconductor device includes a plurality of active regions which are defined in a semiconductor substrate, a plurality of gate lines which are formed as zigzag lines, extend across the active regions, are symmetrically arranged, and define a plurality of first regions and a plurality of second regions therebetween, and wherein the first regions being narrower than the second regions. The semiconductor device further includes an insulation layer which defines a plurality of contact regions by filling empty spaces in the first regions between the gate lines and, extending from the first regions, and surrounding sidewalls of portions of the gate lines in the second regions, and wherein the contact regions partially exposing the active regions and a plurality of contacts which respectively fill the contact regions.
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: January 4, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-Chul Park, Sang-Sup Jeong
  • Patent number: 7781892
    Abstract: An improved interconnect structure and method of making such a device. The improved interconnect electrically connects two otherwise separate areas on a semiconductor wafer. The interconnect preferably uses a copper conductor disposed within a trench and via structure formed in a low-k hybrid dielectric layer using a dual damascene process. Each contact region is served by a plurality of vias, each in communication with the trench conductor portion. The entry from the trench to the via is rounded for at least one and preferably all of the via structures.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: August 24, 2010
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Hsueh-Chung Chen, Chine-Gie Lou, Ping-Liang Liu, Su-Chen Fan
  • Patent number: 7687370
    Abstract: A method for forming a semiconductor isolation trench includes forming a pad oxide layer over a substrate and forming a barrier layer over the substrate. A masking layer is formed over the barrier layer and is patterned to form at least one opening in the masking layer. At least a part of the barrier layer and at least a part of the pad oxide layer are etched through the at least one opening resulting in a trench pad oxide layer. Etching of the trench pad oxide layer stops substantially at a top surface of the substrate within the isolation trench. An oxide layer is grown by diffusion on at least the top surface of the substrate corresponding to the at least one isolation trench. The method further includes etching the oxide layer and at least a portion of the substrate to form at least one isolation trench opening.
    Type: Grant
    Filed: January 27, 2006
    Date of Patent: March 30, 2010
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Toni D. Van Gompel, John J. Hackenberg, Rode R. Mora, Suresh Venkatesan
  • Patent number: 7446012
    Abstract: The present invention relates to a lateral PNP transistor and the method of manufacturing the same. The medium doping N-type base area and the light doping P? collector area were first introduced in the structure before the formation of P+ doping emitter area and the collector area. The emitter-base-collector doping profile in the lateral and the base width of LPNP were similar to NPN. The designer can optimize the doping profile and area size of each area according to the request of the current gain (Hfe), collector-base breakdown voltage (BVceo), and early voltage (VA) of LPNP transistor. These advantages may cause to reduce the area and enhance performance of the LPNP transistor.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: November 4, 2008
    Assignee: BCD Semiconductor Manufacturing Limited
    Inventors: Chong Ren, Xian-Feng Liu, Bin Qiu
  • Patent number: 7439140
    Abstract: Wells are formed in a substrate where standard Vt and low Vt devices of both a first and second type are to be fabricated. Wells defining the locations of first type standard Vt devices are masked, and a first voltage threshold implant adjustment is performed within wells defining the second type standard Vt devices, and each of the first and second type low Vt devices. Wells that define the locations of second type standard Vt devices are masked, and a second voltage threshold implant adjustment is performed to the wells defining the first type standard Vt devices, and each of the first and second type low Vt devices. Doped polysilicon gate stacks are then formed over the wells. Performance characteristics and control of each device Vt is controlled by regulating at least one of the first and second voltage threshold implant adjustments, and the polysilicon gate stack doping.
    Type: Grant
    Filed: December 4, 2006
    Date of Patent: October 21, 2008
    Assignee: Micron Technology, Inc.
    Inventors: Mark Helm, Xianfeng Zhou
  • Patent number: 7365413
    Abstract: Electrical interconnects with a slotting pattern are provided in the present invention. In addition, the masks for making such interconnects and semiconductor devices incorporating such interconnects are also provided in the present invention. The slotting pattern may be designed to minimize dishing effects of the interconnects as a result of planarization. Further, the slotting pattern may be designed to minimize resistance in the interconnects. For instance, the slotting pattern may include slots that are staggered, evenly aligned, or a combination of both staggered and evenly aligned. In addition, the slots may be spaced apart such that electrical paths are shorter across the interconnects. By incorporating such interconnects in semiconductor devices, better performing semiconductor devices can be realized.
    Type: Grant
    Filed: September 13, 2004
    Date of Patent: April 29, 2008
    Assignee: Altera Corporation
    Inventors: Yaron Kretchmer, Fredrik Haghverdian
  • Patent number: 7314792
    Abstract: A method for fabricating a transistor of a semiconductor device is provided. The method includes: forming device isolation layers in a substrate including a bottom structure, thereby defining an active region; etching the active region to a predetermined depth to form a plurality of recess structures each of which has a flat bottom portion with a critical dimension (CD) larger than that of a top portion; and sequentially forming a gate oxide layer and a metal layer on the recess structures; and patterning the gate oxide layer and the metal layer to form a plurality of gate structures.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: January 1, 2008
    Assignee: Hynix Semiconductor Inc.
    Inventors: Myung-Ok Kim, Tae-Woo Jung, Sung-Kwon Lee, Sea-Ug Jang
  • Patent number: 7247555
    Abstract: A method of forming trench openings in a dual damascene trench and via etch process by using a two component hard mask layer, termed a bi-layer, over different intermetal dielectrics, IMD, to solve dual damascene patterning problems, such as, fencing and sub-trench formation. Via first patterning in dual damascene processing is one of the major integration schemes for copper backend of line (BEOL) integration. Via first dual damascene scheme usually uses a hard mask layer deposited on top of an inter-metal dielectric (IMD) film stack. The dual damascene trench etch requires uniform trench depth across wafer after etch. In addition, via top corner profiles need to be well maintained without any fencing or faceting. The present method solves these problems by using a two component hard mask layer, termed a bi-layer, deposited directly on top of an inter-metal dielectric (IMD) film stack.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: July 24, 2007
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Hai Cong, Yong Kong Siew, Liang Choo Hsia