Patents by Inventor Luis Pacheco

Luis Pacheco 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: 8384138
    Abstract: An SRAM device and method of forming MOS transistors of the device having reduced defects associated with selective epitaxial growth in moat tip regions is discussed. The SRAM device comprises a core region and a logic region, logic transistors within the logic region of the SRAM, and selective epitaxial regions grown on both source and drain regions; and memory cell transistors within the core region of the SRAM, and having the selective epitaxial regions grown on only one of the source and drain regions. One method of forming the MOS transistors of the SRAM cell comprises forming a gate structure over a first conductivity type substrate to define a channel therein, masking one of the source and drain regions in the core region, forming a recess in the substrate of the unmasked side of the channel, epitaxially growing SiGe in the recess, removing the mask, and forming the source and drain extension regions in source/drain regions.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: February 26, 2013
    Assignee: Texas Instruments Incorporated
    Inventor: Antonio Luis Pacheco Rotondaro
  • Patent number: 8329589
    Abstract: A semiconductor device comprises a gate structure on a semiconductor substrate and a recessed region in the semiconductor substrate. The recessed region has a widest lateral opening that is near a top surface of the semiconductor substrate. The widest lateral opening undercuts the gate structure.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: December 11, 2012
    Assignee: Texas Instruments Incorporated
    Inventors: Antonio Luis Pacheco Rotondaro, Tracy Q. Hurd, Elizabeth Marley Koontz
  • Patent number: 8288805
    Abstract: A semiconductor device comprises a gate structure on a semiconductor substrate and a recessed region in the semiconductor substrate. The recessed region has a widest lateral opening that is near a top surface of the semiconductor substrate. The widest lateral opening undercuts the gate structure.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: October 16, 2012
    Assignee: Texas Instruments Incorporated
    Inventors: Antonio Luis Pacheco Rotondaro, Tracy Q. Hurd, Elizabeth Marley Koontz
  • Publication number: 20110318901
    Abstract: A semiconductor device comprises a gate structure on a semiconductor substrate and a recessed region in the semiconductor substrate. The recessed region has a widest lateral opening that is near a top surface of the semiconductor substrate. The widest lateral opening undercuts the gate structure.
    Type: Application
    Filed: September 9, 2011
    Publication date: December 29, 2011
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Antonio Luis Pacheco ROTONDARO, Trace Q. HURD, Elisabeth Marley KOONTZ
  • Publication number: 20110316089
    Abstract: A semiconductor device comprises a gate structure on a semiconductor substrate and a recessed region in the semiconductor substrate. The recessed region has a widest lateral opening that is near a top surface of the semiconductor substrate. The widest lateral opening undercuts the gate structure.
    Type: Application
    Filed: September 9, 2011
    Publication date: December 29, 2011
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Antonio Luis PACHECO ROTONDARO, Trace Q. HURD, Elisabeth Marley KOONTZ
  • Patent number: 8049254
    Abstract: A semiconductor device comprises a gate structure on a semiconductor substrate and a recessed region in the semiconductor substrate. The recessed region has a widest lateral opening that is near a top surface of the semiconductor substrate. The widest lateral opening undercuts the gate structure.
    Type: Grant
    Filed: March 23, 2009
    Date of Patent: November 1, 2011
    Assignee: Texas Instruments Incorporated
    Inventors: Antonio Luis Pacheco Rotondaro, Trace Q. Hurd, Elisabeth Marley Koontz
  • Publication number: 20100314296
    Abstract: A means for transporting a dispersion of heavy crude oil and water by conventional pipelines. The dispersion is an emulsion prepared by combining production water with crude oil as well as an adequate surfactant system such that the dispersion stabilizes. The dispersion presents a viscosity of less than about 500 cP allowing it to be pumpable and transportable via conventional pipelines. The dispersion, once it arrives at its final destination, is broken or separated by means of one or more suitable diluents such that the remaining oil meets predetermined specifications for further processing, i.e. refining into lighter fractions.
    Type: Application
    Filed: January 29, 2010
    Publication date: December 16, 2010
    Inventors: Luis Pacheco, Maria Briceño, Gustavo Núñez
  • Patent number: 7691714
    Abstract: The present invention provides a method for manufacturing a transistor device, a method for manufacturing an integrated circuit, and a transistor device. The method for manufacturing the transistor device, among other steps, includes forming a gate structure over a substrate and forming source/drain regions in the substrate proximate the gate structure, the source/drain regions having a boundary that forms an electrical junction with the substrate. The method further includes forming dislocation loops in the substrate, the dislocation loops not extending outside the boundary of the source/drain regions.
    Type: Grant
    Filed: January 25, 2005
    Date of Patent: April 6, 2010
    Assignee: Texas Instruments Incorporated
    Inventors: Antonio Luis Pacheco Rotondaro, Kaiping Liu, Jihong Chen, Amitabh Jain
  • Patent number: 7601578
    Abstract: A method for improving high-? gate dielectric film (104) properties. The high-? film (104) is subjected to a two step anneal sequence. The first anneal is performed in a reducing ambient (106) with low partial pressure of oxidizer to promote film relaxation and increase by-product diffusion and desorption. The second anneal is performed in an oxidizing ambient (108) with a low partial pressure of reducer to remove defects and impurities.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: October 13, 2009
    Assignee: Texas Instruments Incorporated
    Inventors: Luigi Colombo, James J. Chambers, Mark R. Visokay, Antonio Luis Pacheco Rotondaro
  • Patent number: 7601577
    Abstract: Forming metal gate transistors that have different work functions is disclosed. In one example, a first metal, which is a ‘mid gap’ metal, is manipulated in first and second regions by second and third metals, respectively, to move the work function of the first metal in opposite directions in the different regions. The resulting work functions in the different regions correspond to that of different types of the transistors that are to be formed.
    Type: Grant
    Filed: October 11, 2007
    Date of Patent: October 13, 2009
    Assignee: Texas Instruments Incorporated
    Inventors: James Joseph Chambers, Mark Robert Visokay, Luigi Colombo, Antonio Luis Pacheco Rotondaro
  • Publication number: 20090174005
    Abstract: A semiconductor device comprises a gate structure on a semiconductor substrate and a recessed region in the semiconductor substrate. The recessed region has a widest lateral opening that is near a top surface of the semiconductor substrate. The widest lateral opening undercuts the gate structure.
    Type: Application
    Filed: March 23, 2009
    Publication date: July 9, 2009
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Antonio Luis Pacheco Rotondaro, Trace Q. Hurd, Elisabeth Marley Koontz
  • Patent number: 7528072
    Abstract: A semiconductor device comprising a gate structure on a semiconductor substrate and a recessed-region in the semiconductor substrate. The recessed-region has a widest lateral opening that is near a top surface of the semiconductor substrate. The widest lateral opening undercuts the gate structure.
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: May 5, 2009
    Assignee: Texas Instruments Incorporated
    Inventors: Antonio Luis Pacheco Rotondaro, Trace Q. Hurd, Elisabeth Marley Koontz
  • Patent number: 7514309
    Abstract: A semiconductor device is fabricated with a protective liner and/or layer. Well regions and isolation regions are formed within a semiconductor body. A gate dielectric layer is formed over the semiconductor body. A gate electrode layer, such as polysilicon, is formed on the gate dielectric layer. A protective gate liner is formed on the gate electrode layer. A resist mask is formed that defines gate structures. The gate electrode layer is patterned to form the gate structures. Offset spacers are formed on lateral edges of the gate structures and extension regions are then formed in the well regions. Sidewall spacers are then formed on the lateral edges of the gate structures. An NMOS protective region layer is formed that covers the NMOS region of the device. A recess etch is performed within the PMOS region followed by formation of strain inducing recess structures.
    Type: Grant
    Filed: July 19, 2005
    Date of Patent: April 7, 2009
    Assignee: Texas Instruments Incorporated
    Inventors: Seetharaman Sridhar, Craig Hall, Che-Jen Hu, Antonio Luis Pacheco Rotondaro
  • Publication number: 20080268628
    Abstract: The disclosure relates to a method of forming an n-type doped active area on a semiconductor substrate that presents an improved placement profile. The method comprises the placement of arsenic in the presence of a carbon-containing arsenic diffusion suppressant in order to reduce the diffusion of the arsenic out of the target area during heat-induced annealing. The method may additionally include the placement of an amorphizer, such as germanium, in the target area in order to reduce channeling of the arsenic ions through the crystalline lattice. The method may also include the use of arsenic in addition to another n-type dopant, e.g. phosphorus, in order to offset some of the disadvantages of a pure arsenic dopant. The disclosure also relates to a semiconductor component, e.g. an NMOS transistor, formed in accordance with the described methods.
    Type: Application
    Filed: April 25, 2007
    Publication date: October 30, 2008
    Inventors: Puneet Kohli, Manoj Mehrotra, Antonio Luis Pacheco Rotondaro, Stan Ashburn, Nandakumar Mahalingam, Amitabh Jain
  • Publication number: 20070290192
    Abstract: An SRAM device and method of forming MOS transistors of the device having reduced defects associated with selective epitaxial growth in moat tip regions is discussed. The SRAM device comprises a core region and a logic region, logic transistors within the logic region of the SRAM, and selective epitaxial regions grown on both source and drain regions; and memory cell transistors within the core region of the SRAM, and having the selective epitaxial regions grown on only one of the source and drain regions. One method of forming the MOS transistors of the SRAM cell comprises forming a gate structure over a first conductivity type substrate to define a channel therein, masking one of the source and drain regions in the core region, forming a recess in the substrate of the unmasked side of the channel, epitaxially growing SiGe in the recess, removing the mask, and forming the source and drain extension regions in source/drain regions.
    Type: Application
    Filed: June 14, 2006
    Publication date: December 20, 2007
    Inventor: Antonio Luis Pacheco Rotondaro
  • Patent number: 7291527
    Abstract: Forming metal gate transistors that have different work functions is disclosed. In one example, a first metal, which is a ‘mid gap’ metal, is manipulated in first and second regions by second and third metals, respectively, to move the work function of the first metal in opposite directions in the different regions. The resulting work functions in the different regions correspond to that of different types of the transistors that are to be formed.
    Type: Grant
    Filed: September 7, 2005
    Date of Patent: November 6, 2007
    Assignee: Texas Instruments Incorporated
    Inventors: James Joseph Chambers, Mark Robert Visokay, Luigi Colombo, Antonio Luis Pacheco Rotondaro
  • Patent number: 7226826
    Abstract: The present invention provides a semiconductor device, a method of manufacture therefor, and a method for manufacturing an integrated circuit. The semiconductor device (100), among other possible elements, includes a first transistor (120) located over a semiconductor substrate (110), wherein the first transistor (120) has a metal gate electrode (135) having a work function, and a second transistor (160) located over the semiconductor substrate (110) and proximate the first transistor (120), wherein the second transistor (160) has a plasma altered metal gate electrode (175) having a different work function.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: June 5, 2007
    Assignee: Texas Instruments Incorporated
    Inventors: Husam N. Alshareef, Mark R. Visokay, Antonio Luis Pacheco Rotondaro, Luigi Colombo
  • Patent number: 7199011
    Abstract: The present invention pertains to formation of a transistor in a manner that mitigates overlap capacitances, thereby facilitating, among other things, enhanced switching speeds. More particularly, a gate stack of the transistor is formed to include an optional layer of poly-SiGe and a layer of poly-Si, where at least one or the layers comprises carbon. The stack may also include a polysilicon seed layer that can also comprise carbon. The carbon changes the components of sidewall passivation materials and affects etch rates during an etching process, thereby facilitating isotropic etching. The changed passivation materials coupled with an enhanced sensitivity of the poly-SiGe and carbon-doped poly-SiGe layer to an etchant utilized in the etching process causes the stack to have a notched appearance.
    Type: Grant
    Filed: July 16, 2003
    Date of Patent: April 3, 2007
    Assignee: Texas Instruments Incorporated
    Inventors: Majid Movahed Mansoori, Alwin Tsao, Antonio Luis Pacheco Rotondaro, Brian Ashley Smith
  • Patent number: 7172936
    Abstract: The present invention facilitates semiconductor fabrication by providing methods of fabrication that selectively apply tensile strain to channel regions of devices while mitigating masking operations employed. A cap poly layer is formed over NMOS and PMOS regions of a semiconductor device. Then, a resist mask is employed to remove a portion of the cap poly layer from the PMOS region. Subsequently, the same resist mask and/or remaining portion of the cap poly layer is employed to form source/drain regions within the PMOS region by implanting a p-type dopant. Afterward, a cap poly thermal process is performed that causes tensile strain to be induced only in channel regions of devices located within the NMOS region. As a result, channel mobility and/or performance of devices located in the PMOS region is not substantially degraded.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: February 6, 2007
    Assignee: Texas Instruments Incorporated
    Inventors: Seetharaman Sridhar, Antonio Luis Pacheco Rotondaro
  • Patent number: 7088123
    Abstract: In one embodiment, a method for extracting C-V characteristics of ultra-thin oxides includes coupling a device under test to a testing structure, in which the device under test includes a plurality of transistors. Alternatively, the device under test includes a plurality of varactors. The method further includes inputting a radio frequency signal of at least one GHz into the testing structure, de-embedding the parasitics of the testing structure, inputting a bias into the device under test, determining the capacitance density per gate width of the device under test, plotting capacitance density per gate width versus gate length to obtain a first curve, and determining a slope of the first curve. These steps are repeated for one or more additional biasing conditions, and the determined slopes are plotted on a capacitance density per voltage graph to obtain a C-V curve for the device under test.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: August 8, 2006
    Assignee: Texas Instruments Incorporated
    Inventors: Jau-Yuann Yang, Hamseswari Renganathan, Kaiping Liu, Antonio Luis Pacheco Rotondaro