Patents by Inventor Steven A. Lytle

Steven A. Lytle 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).

  • Publication number: 20090102501
    Abstract: In accordance with the invention, there are electron beam inspection systems, electron beam testable semiconductor test structures, and methods for detecting systematic defects, such as, for example contact-to-gate shorts, worm hole leakage paths, holes printing issues, and anomalies in sparse holes and random defects, such as, current leakage paths due to dislocations and pipes during semiconductor processing.
    Type: Application
    Filed: October 19, 2007
    Publication date: April 23, 2009
    Inventors: Richard L. Guldi, Toan Tran, Deepak Ramappa, Steven A. Lytle
  • Patent number: 7250334
    Abstract: A method (10) of forming a MIM (metal insulator metal) capacitor is disclosed whereby adverse affects associated with copper diffusion are mitigated even as the capacitor is scaled down. A sidewall spacer (156) is formed against an edge (137) of a layer of bottom electrode/copper diffusion barrier material (136), an edge (151) of a layer of capacitor dielectric material (150) and at least some of an edge (153) of a layer of top electrode material. The sidewall spacer (156) is dielectric or non-conductive and mitigates “shorting” currents that can develop between the plates as a result of copper diffusion. Bottom electrode diffusion barrier material (136) mitigates copper diffusion and/or copper drift, thereby reducing the likelihood of premature device failure.
    Type: Grant
    Filed: July 31, 2004
    Date of Patent: July 31, 2007
    Assignee: Texas Instruments Incorporated
    Inventors: Darius L. Crenshaw, Byron L. Williams, Alwin Tsao, Hisashi Shichijo, Satyavolu S. Papa Rao, Kenneth D. Brennan, Steven A. Lytle
  • Patent number: 6989602
    Abstract: The present invention provides a method of forming integrated circuit interconnect structures wherein a passing metal feature does not include a landing pad. In an exemplary embodiment, the method includes forming a via opening through first and second dielectric layers, such as silicon dioxide layer, located over a conductive layer, such as copper, and to a first etch stop layer, such as silicon nitride, located over the conductive layer. A trench opening is then formed through the second dielectric layer and to a second etch stop layer. Once the via and trench openings are formed, an etch is conducted that etches through the first etch stop layer such that the opening contacts the underlying conductive layer.
    Type: Grant
    Filed: September 21, 2000
    Date of Patent: January 24, 2006
    Assignee: Agere Systems Inc.
    Inventor: Steven A. Lytle
  • Patent number: 6555910
    Abstract: The present invention provides a semiconductor device and method of manufacture thereof that provides improved dielectric thickness control. The semiconductor device includes a metal feature located on a semiconductor substrate, wherein the metal feature has openings formed therein, or depending on the device, therethrough. The semiconductor device further includes a fluorinated dielectric layer located over the metal feature and within the openings. Thus, the inclusion of openings within the metal feature allows for a substantially planar surface of the fluorinated dielectric layer.
    Type: Grant
    Filed: August 29, 2000
    Date of Patent: April 29, 2003
    Assignee: Agere Systems Inc.
    Inventors: Robert A. Ashton, Steven A. Lytle, Mary D. Roby, Morgan J. Thoma, Daniel J. Vitkavage
  • Patent number: 6218085
    Abstract: A method for stripping photoresist material (26) from a semiconductor substrate (16) avoids incorporation of sodium and other contaminant ions from a rework solvent. An oxygen and hydrogen plasma mixture strips the photoresist material without significant introduction of oxygen into the titanium nitride layer (24). Any oxidation of the titanium nitride is reversed by exposing the substrate to an oxygen-free, reducing plasma, such as a hydrogen-containing plasma. The titanium nitride layer is thereby much less susceptible to incorporation of contaminant ions in a subsequent cleaning with rework solvent than a layer which has been extensively oxidized during the plasma stripping process.
    Type: Grant
    Filed: September 21, 1999
    Date of Patent: April 17, 2001
    Assignee: Lucent Technologies Inc.
    Inventors: Simon J. Molloy, Nace Layadi, Allen Yen, Brian D. Crevasse, Steven A. Lytle
  • Patent number: 5100827
    Abstract: An integrated circuit having one or more antifuses which connect electrical components through a dielectric layer. The antifuse is formed before the thick dielectric is deposited and patterned to form windows which expose the antifuse.
    Type: Grant
    Filed: February 27, 1991
    Date of Patent: March 31, 1992
    Assignee: AT&T Bell Laboratories
    Inventor: Steven A. Lytle