Making Of Isolation Regions Between Components (epo) Patents (Class 257/E21.54)

  • Patent number: 7196396
    Abstract: The method of manufacturing a semiconductor device has the steps of: etching a semiconductor substrate to form an isolation trench by using as a mask a pattern including a first silicon nitride film and having a window; depositing a second silicon nitride film covering an inner surface of the isolation trench; forming a first silicon oxide film burying the isolation trench; etching and removing the first silicon oxide film in an upper region of the isolation trench; etching and removing the exposed second silicon nitride film; chemical-mechanical-polishing the second silicon oxide film; and etching and removing the exposed first silicon nitride film.
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: March 27, 2007
    Assignee: Fujitsu Limited
    Inventor: Hiroyuki Ohta
  • Patent number: 7141496
    Abstract: A method of treating a dielectric surface portion of a semiconductor substrate, comprising the steps of: (a) providing a semiconductor substrate having a dielectric surface portion; and then (b) treating said dielectric surface portion with a coating reagent, the coating reagent comprising a reactive group coupled to a coordinating group, with the coordinating group having a metal bound thereto, so that the metal is deposited on the dielectric surface portion to produce a surface portion treated with a metal.
    Type: Grant
    Filed: January 22, 2004
    Date of Patent: November 28, 2006
    Assignee: MiCell Technologies, Inc.
    Inventors: James P. DeYoung, James B. McClain, Stephen M. Gross, Doug Taylor, Mark I. Wagner, David Brainard
  • Patent number: 7135371
    Abstract: Methods of fabricating semiconductor devices are disclosed. One example method includes forming a gate oxide and a gate electrode on a semiconductor substrate; performing a first ion implantation process for the formation of an LDD (lightly doped drain) region in the substrate; forming spacers on the sidewalls of the gate electrode; performing a second ion implantation process for the formation of a junction region in the substrate using the spacers as mask; forming a trench for device isolation by removing selectively the top portion of the substrate between the spacers; forming a sidewall oxide layer on the resulting substrate; forming a diffusion barrier on the sidewall oxide layer; depositing a gap filling insulation layer over the diffusion barrier; planarizing the gap filling insulating layer; and removing selectively some part of the gap filling insulation layer to form contact holes.
    Type: Grant
    Filed: December 29, 2003
    Date of Patent: November 14, 2006
    Assignee: Dongbu Electronics, Co., Ltd.
    Inventors: Chang Hun Han, Dong Yeal Keum
  • Patent number: 7132333
    Abstract: A transistor, memory cell array and method of manufacturing a transistor are disclosed.
    Type: Grant
    Filed: September 10, 2004
    Date of Patent: November 7, 2006
    Assignee: Infineon Technologies AG
    Inventors: Till Schloesser, Rolf Weis, Ulrike Gruening-Von Schwerin
  • Patent number: 7118988
    Abstract: A static random access memory (SRAM) cell structure is created in a three-dimensional format as a vertical stack of wired transistors. These transistors are fabricated from crystalline silicon, and supplemental wiring structure features are fabricated to comprise a circuit along the walls of a vertical pillar. The three-dimensional cell integrated circuit can be created by a single mask step. Various structural features and methods of fabrication are described in detail. Peripheral interface, a two pillar version and other supplemental techniques are also described.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: October 10, 2006
    Inventors: Walter Richard Buerger, Jr., Jakob Hans Hohl, Mary Lundgren Long, Kent Ridgeway
  • Patent number: 7112513
    Abstract: A method of depositing dielectric material into sub-micron spaces and resultant structures is provided. After a trench is etched in the surface of a wafer, an oxygen barrier is deposited into the trench. An expandable, oxidizable liner, preferably amorphous silicon, is then deposited. The trench is then filled with a spin-on dielectric (SOD) material. A densification process is then applied, whereby the SOD material contracts and the oxidizable liner expands. Preferably, the temperature is ramped up while oxidizing during at least part of the densification process. The resulting trench has a negligible vertical wet etch rate gradient and a negligible recess at the top of the trench.
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: September 26, 2006
    Assignee: Micron Technology, Inc.
    Inventors: John A. Smythe, III, Jigish D. Trivedi