Patents by Inventor Satyavolu Rao

Satyavolu Rao 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: 20070117371
    Abstract: A device employs damascene layers with a pore sealing liner and includes a semiconductor body. A metal interconnect layer comprising a metal interconnect is formed over the semiconductor body. A dielectric layer is formed over the metal interconnect layer. A conductive trench feature and a conductive via feature are formed in the dielectric layer. A pore sealing liner is formed only along sidewall of the conductive via feature and along sidewalls and bottom surfaces of the conductive trench feature. The pore sealing liner is not substantially present along a bottom surface of the conductive via feature.
    Type: Application
    Filed: November 23, 2005
    Publication date: May 24, 2007
    Inventors: Edward Engbrecht, Satyavolu Rao, Sameer Ajmera, Stephan Grunow
  • Publication number: 20070032094
    Abstract: The present invention provides a process for improving the hardness and/or modulus of elasticity of a dielectric layer and a method for manufacturing an integrated circuit. The process for improving the hardness and/or modulus of elasticity of a dielectric layer, among other steps, includes providing a dielectric layer having a hardness and a modulus of elasticity, and subjecting the dielectric layer to an energy beam, thereby causing the hardness or modulus of elasticity to increase in value.
    Type: Application
    Filed: August 4, 2005
    Publication date: February 8, 2007
    Applicant: Texas Instruments, Incorporated
    Inventors: Ting Tsui, Andrew McKerrow, Satyavolu Rao, Robert Kraft
  • Publication number: 20060160299
    Abstract: The formation of a MIM (metal insulator metal) capacitor (164) and concurrent formation of a resistor (166) is disclosed. A copper diffusion barrier (124) is formed over a copper deposition (110) that serves as a bottom electrode (170) of the capacitor (164). The copper diffusion barrier (124) mitigates unwanted diffusion of copper from the copper deposition (110), and is formed via electro-less deposition such that little to none of the barrier material is deposited at locations other than over a top surface (125) of the deposition of copper/bottom electrode. Subsequently, layers of dielectric (150) and conductive (152) materials are applied to form a dielectric (172) and top electrode (174) of the MIM capacitor (164), respectively, where the layer of conductive top electrode material (152) also functions to concurrently develop the resistor (166) on the same chip as the capacitor (164).
    Type: Application
    Filed: January 18, 2005
    Publication date: July 20, 2006
    Inventors: Satyavolu Rao, Darius Crenshaw, Stephan Grunow, Kenneth Brennan, Somit Joshi, Montray Leavy, Phillip Matz, Sameer Ajmera, Yuri Solomentsev
  • Publication number: 20050239218
    Abstract: The present invention provides a ferroelectric capacitor, a method of manufacture therefor, and a method of manufacturing a ferroelectric random access memory (FeRAM) device. The ferroelectric capacitor (100), among other elements, includes a substantially planar ferroelectric dielectric layer (165) located over a first electrode layer (160), wherein the substantially planar ferroelectric dielectric layer (165) has an average surface roughness of less than about 4 nm. The ferroelectric capacitor (100) further includes a second electrode layer (170) located over the substantially planar ferroelectric dielectric layer (165).
    Type: Application
    Filed: April 21, 2004
    Publication date: October 27, 2005
    Applicant: Texas Instruments Incorporated
    Inventors: Sanjeev Aggarwal, Kelly Taylor, Lindsey Hall, Satyavolu Rao
  • Publication number: 20050037613
    Abstract: A method for forming improved diffusion barriers for copper lines in integrated circuits is described. A low-k dielectric layer (10) is formed over a semiconductor (5). A trench (15) is formed in the low-k dielectric layer (10) and a TiNSi layer (20) is formed in the trench. An ?-Ta layer (30) is formed over the TiNSi layer (20) and copper (40) is subsequently formed in the trench (15) filling the trench (15).
    Type: Application
    Filed: August 14, 2003
    Publication date: February 17, 2005
    Inventors: Stephan Grunow, Satyavolu Rao, Noel Russell