Patents Examined by Pamela Perkins
  • Patent number: 6551867
    Abstract: A non-volatile semiconductor memory device includes an interlayer dielectric film 9, 19 flattened by etching back an SOG film. In the non-volatile semiconductor memory device, a barrier film of a silicon nitride film 9D and 19D is formed to cover at least a memory cell composed of a floating gate 4, a control gate 6, etc. Because of such a structure, even if H or OH contained in the SOG is diffused, it will not be trapped by a tunneling film 3. This improves a “trap-up rate”. The barrier film may be formed in only an area covering the memory cell. This reduces its contact area with a tungsten silicide film, thereby suppressing film peeling-off. Thus, the operation life of the memory cell in the non-volatile semiconductor memory device can be improved.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: April 22, 2003
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Kazuyuki Ozeki, Yukihiro Oya, Kazutoshi Kitazume, Hideo Azegami
  • Patent number: 6541392
    Abstract: A method for the production of anisotropic, three dimensional thin films is disclosed. Instead of fabricating away from the routine tendency of vacuum sputter deposited thin films to form discontinuous islands which then accrete into the third dimension, the present method encourages this anisotropic formation. By precisely controlling gun voltage and deposition time, together with spectral control over the plasma forming gas and any reactive gas, with accurate substrate temperature control, and real-time feed-back and control over deposition parameters, two or more materials are sequentially grown on a substrate as distinct discontinuous islands. The resultant film maintains the optimum characteristics of each one of the film's components. Other novel structures made possible by the method of the invention include unique single component and post method deposited component anisotropic thin films.
    Type: Grant
    Filed: July 17, 2001
    Date of Patent: April 1, 2003
    Assignee: Technology Ventures, L.L.C.
    Inventors: Yuval C Avniel, Alexander N. Govyadinov, Peter Mardilovich
  • Patent number: 6538286
    Abstract: A device isolation structure and method for a semiconductor device according to the present invention includes forming first and second trenches by etching predetermined regions of a semiconductor substrate, forming a buried insulating film in the trenches, filling in the trenches by depositing single crystal silicon film on the buried insulating film by a silicon epitaxy method, and forming a field insulating film on portions of the semiconductor substrate between the first and second trenches. The field oxide film isolating the single crystal silicon layers fills the adjacent trenches, thus isolating semiconductor devices, such as a high voltage device and a low voltage device, to be fabricated in the single crystal silicon layers.
    Type: Grant
    Filed: January 10, 2000
    Date of Patent: March 25, 2003
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventor: Jong-Hak Back
  • Patent number: 6521527
    Abstract: Obtained are a semiconductor device which can prevent diffusion of an impurity contained in a gate electrode and a method of fabricating the same. In this semiconductor device, a gate oxide film and a P+-type gate electrode which are formed on a P-type silicon substrate are doped with nitrogen.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: February 18, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takashi Kuroi, Shuichi Ueno, Hidekazu Oda, Satoshi Shimizu
  • Patent number: 6482656
    Abstract: A semiconductor device including a damascene superconducting interconnect, formed of a Ba—Cu—Ca—O superconducting material. A method of forming a superconducting damascene interconnect structure, and the structure made thereby, the method including forming a cavity in an interlevel dielectric; forming a barrier layer in the cavity; forming a seed layer in the cavity over the barrier layer; forming a Cu—Ba alloy layer; filling the cavity by depositing a Cu—Ca—O film; and annealing in oxygen flow to form a Ba—Cu—Ca—O superconductor on the barrier layer. In an alternate embodiment, no barrier layer is formed.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: November 19, 2002
    Assignee: Advanced Micro Devices, Inc.
    Inventor: Sergey Lopatin
  • Patent number: 6476478
    Abstract: A semiconductor chip package and a method of making the package are disclosed. The method includes forming a lead frame having a die pad and leads. At least one of the leads has a tab projecting upward and laterally from a body of the lead. In one embodiment, curved tips are formed on the inner ends of the leads. At least a portion of the lead frame is encapsulated with a mold material to form a package mold having a cavity. The cavity has a floor with a thickness substantially similar to the thickness of the leads so as to expose upper surfaces of the inner ends of the leads. The leads have lower surfaces exposed at the lower surface of the package mold. The lead tab is entirely encapsulated within the package mold. A semiconductor die is mounted on the lead frame subsequent to the encapsulation of at least a portion of the lead frame. The semiconductor die is enclosed in the package mold by placing a covering such as a lid over the semiconductor die.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: November 5, 2002
    Assignee: Amkor Technology, Inc.
    Inventors: Gary L. Swiss, Angel O. Alvarez