Patents by Inventor Heidi B. Cao

Heidi B. Cao 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: 7723008
    Abstract: A semiconductor process technique to help reduce semiconductor process effects, such as undesired line edge roughness, insufficient lithographical resolution, and limited depth of focus problems associated with the removal of a photoresist layer. More particularly, embodiments of the invention use a photoacid generator (PAG) material in conjunction with a sacrificial light absorbing material (SLAM) to help reduce these and other undesired effects associated with the removal of photoresist in a semiconductor manufacturing process. Furthermore, embodiments of the invention allow a PAG to be applied in a semiconductor manufacturing process in an efficient manner, requiring fewer processing operations than typical prior art techniques.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: May 25, 2010
    Assignee: Intel Corporation
    Inventors: Robert P. Meagley, Heidi B. Cao, Kevin P. O'Brien
  • Patent number: 7718528
    Abstract: A semiconductor process technique to help reduce semiconductor process effects, such as undesired line edge roughness, insufficient lithographical resolution, and limited depth of focus problems associated with the removal of a photoresist layer. More particularly, embodiments of the invention use a photoacid generator (PAG) material in conjunction with a sacrificial light absorbing material (SLAM) to help reduce these and other undesired effects associated with the removal of photoresist in a semiconductor manufacturing process. Furthermore, embodiments of the invention allow a PAG to be applied in a semiconductor manufacturing process in an efficient manner, requiring fewer processing operations than typical prior art techniques.
    Type: Grant
    Filed: January 5, 2007
    Date of Patent: May 18, 2010
    Assignee: Intel Corporation
    Inventors: Robert P. Meagley, Heidi B. Cao, Kevin P. O'Brien
  • Publication number: 20080076058
    Abstract: A photoresist composition (phosphoresist) including a resist capable of activation when exposed to electromagnetic energy within a first bandwidth, but relatively insensitive to electromagnetic energy within a second bandwidth and a third bandwidth, and also including a phosphor material included in the photoresist and capable of activation when exposed to electromagnetic energy within the second bandwidth. Photo-luminescent centers included in the phosphoresist are associated with the phosphor material and are capable of emitting luminescence within the first bandwidth in response to exposure to electromagnetic energy within the third bandwidth. The phosphoresist may be disposed as a relatively thin and uniform layer at a surface of a substrate, such as a semiconductor substrate.
    Type: Application
    Filed: August 11, 2006
    Publication date: March 27, 2008
    Inventors: Michael J. Leeson, Heidi B. Cao, Wang Yueh, Jeanette M. Roberts
  • Patent number: 7226718
    Abstract: Numerous embodiments of a method to prevent outgassing from a low activation energy photoresist are described. In one embodiment of the present invention, a photoresist material is dispensed over a substrate to form a photoresist layer. The photoresist layer includes branched polymers coupled with acetal or ketal linkages. An exposed portion of the photoresist layer is exposed to a radiation treatment to cleave the acetal or ketal linkages and separate the branched polymers. The photoresist layer is baked at a temperature below about 100° C., and the separated branched polymers are too large to outgass from the photoresist layer.
    Type: Grant
    Filed: September 15, 2005
    Date of Patent: June 5, 2007
    Assignee: Intel Corporation
    Inventors: Heidi B. Cao, Wang Yueh, Jeanette M. Roberts
  • Patent number: 7166413
    Abstract: By using a branched long chained chain scission polymer as a photoresist for EUV and 157 nanometer applications, a relatively higher molecular weight polymer with good mechanical properties may be achieved. In addition, by using chain scission technology, line edge roughness and resolution may be improved at the same time.
    Type: Grant
    Filed: October 12, 2004
    Date of Patent: January 23, 2007
    Assignee: Intel Corporation
    Inventors: Heidi B. Cao, Robert P. Meagley
  • Patent number: 7147986
    Abstract: A compound including a polymeric chain, and an acid labile group attached to the polymeric chain at an anhydride linkage is disclosed. Compositions including the compound, and methods of using the compositions are also disclosed.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: December 12, 2006
    Assignee: Intel Corporation
    Inventors: Wang Yueh, Heidi B. Cao
  • Patent number: 6872505
    Abstract: By using a branched long chained chain scission polymer as a photoresist for EUV and 157 nanometer applications, a relatively higher molecular weight polymer with good mechanical properties may be achieved. In addition, by using chain scission technology, line edge roughness and resolution may be improved at the same time.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: March 29, 2005
    Assignee: Intel Corporation
    Inventors: Heidi B. Cao, Robert P. Meagley