Patents by Inventor David R. Wyke

David R. Wyke has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6395102
    Abstract: A method and system for cleaning a reticle. There is provided a clean chamber and a reticle having a pair of opposing edges and a pair of opposing surfaces which is to be cleaned disposed in the clean chamber. A gas inert to the reticle is directed in a direction tangential to each of the surfaces of the reticle and along one the edge of the reticle. The gas is exhausted from a location spaced from the other of the pair of opposing edges and remote form the one edge. An optional monitor monitors the particles in the exhausted gas. The gas is preferably applied in pulses which have a pulse length of from about 0.05 second to about 1 second and a pulse repetition rate of from about 0.5/second to about 40/second. The gas is preferably ionized and preferably is applied at a pressure of from about 20 psi to about 120 psi. The stepper chamber is vibrationally isolated from the blow-off chamber.
    Type: Grant
    Filed: August 25, 1998
    Date of Patent: May 28, 2002
    Assignee: Texas Instruments Incorporated
    Inventors: Sima Salamati-Saradh, Richard L. Guldi, David R. Wyke
  • Patent number: 6305097
    Abstract: A system for cleaning a reticle. There is provided a clean chamber and a reticle having a pair of opposing edges and a pair of opposing surfaces which is to be cleaned disposed in the clean chamber. A gas inert to the reticle is directed in a direction tangential to each of the surfaces of the reticle and along one the edge of the reticle. The gas is exhausted from a location spaced from the other of the pair of opposing edges and remote form the one edge. An optional monitor monitors the particles in the exhausted gas. The gas is preferably applied in pulses which have a pulse length of from about 0.05 second to about 1 second and a pulse repetition rate of from about 0.5/second to about 40/second. The gas is preferably ionized and preferably is applied at a pressure of from about 20 psi to about 120 psi. The stepper chamber is vibrationally isolated from the blow-off chamber.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: October 23, 2001
    Assignee: Texas Instruments Incorporated
    Inventors: Sima Salamati-Saradh, Richard L. Guldi, David R. Wyke
  • Patent number: 6222228
    Abstract: A method of processing wafers containing a gate oxide assembly (10) is disclosed that reduces gate oxide damage during wafer production due to damage caused by charging. The method comprises creating an oxide gate assembly (10) on a silicon layer (11) in a production line chamber followed by the deposition of a polysilicon layer (22). Following the creation of the gate oxide assembly (10) a pressure of at least 1.2 Torr is maintained while lowering the power within the production line chamber. The invention can be used with a gate oxide layer (16) of less than 1000 angstroms.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: April 24, 2001
    Assignee: Texas Instruments Incorporated
    Inventors: Farris D. Malone, Sima Salamati-Saradh, Ingrid G. Jenkins, David R. Wyke, Mary C. Adams
  • Patent number: 6218218
    Abstract: A method of processing wafers containing a gate oxide assembly (10) is disclosed that reduces gate oxide damage during wafer production due to damage caused by charging. The method comprises creating an oxide gate assembly (10) on a silicon layer (11) in a production line chamber followed by the deposition of a polysilicon layer (22). Following the creation of the gate oxide assembly (10) a pressure of at least 1.2 Torr is maintained while lowering the power within the production line chamber. The invention can be used with a gate oxide layer (16) of less than 1000 angstroms.
    Type: Grant
    Filed: June 19, 1997
    Date of Patent: April 17, 2001
    Assignee: Texas Instruments Incorporated
    Inventors: Farris D. Malone, Sima Salamati-Saradh, Ingrid G. Jenkins, David R. Wyke, Mary C. Adams
  • Patent number: 5376585
    Abstract: A method and structure for a titanium tungsten (TiW)/tungsten local interconnect (136) for cells (100) of semiconductor device includes steps and structure resulting from sputtering a titanium tungsten (TiW) layer (128) on semiconductor structure (100) and then forming a tungsten layer over the TiW layer (128). Then, the method is to pattern a layer of resistive polymer (32) such as photoresist in a predetermined lithographic pattern over the structure (100). This forms the local interconnect (136) from the TiW layer (128). Then, by dry etching, the process removes exposed portions of the tungsten and TiW layers. A wet strip process removes resistive polymer (32) from the semiconductor structure (100) to yield TiW/tungsten interconnect (136) for the semiconductor structure (100). Alternatively a single TiW layer is used in which exposed portions of the TiW layer are removed by a wet etch.
    Type: Grant
    Filed: September 25, 1992
    Date of Patent: December 27, 1994
    Assignee: Texas Instruments Incorporated
    Inventors: Johnson J. Lin, David R. Wyke