Patents by Inventor Wuping Liu

Wuping Liu 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: 7256136
    Abstract: In accordance with the objectives of the invention a new method is provided for the creation of an interconnect pattern. The invention provides for a layer of Photo-Active Dielectric (PAD) to be used for the insulation material in which the interconnect pattern is created, this without the use of an overlying exposure mask of photoresist.
    Type: Grant
    Filed: February 2, 2006
    Date of Patent: August 14, 2007
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Wuping Liu, Bei Chao Zhang, Liang Choo Hsia
  • Publication number: 20070134941
    Abstract: An example embodiment is a method of curing a film over a semiconductor structure. We provide a semiconductor structure comprised of a substrate and an interconnect structure. We provide a film over the semiconductor structure. We provide an electron source, an anode grid between the electron source and the semiconductor structure. We cure the film by exposing the film to an electron beam from the electron source that passes through the anode grid. We control the electron beam by controlling the bias voltage between the anode grid and the semiconductor structure. Another embodiment is a tool for curing a film.
    Type: Application
    Filed: December 8, 2005
    Publication date: June 14, 2007
    Inventors: Huang Liu, Bei Zhang, Wuping Liu, John Sudijono, Liang Hsia
  • Patent number: 7153766
    Abstract: A new method is provided for the creation of copper interconnects. A pattern of copper interconnects is created, a protective layer of semiconductor material is deposited over the surface of the created copper interconnects. The protective layer is patterned and etched, exposing the surface of the pattern of copper interconnects. The exposed copper surface is Ar sputtered after which a first barrier layer is deposited. The patterned and etched layer of protective material is removed, leaving in place overlying the pattern of copper interconnects a protective layer of first barrier material. A dielectric barrier layer, in the form of a layer of etch stop material, is deposited after which additional layers of dielectric interspersed with layers of etch stop material are deposited. Via and trench patterns are etched aligned with a copper pattern to which an electrical contact is to be established, the copper pattern being protected by the first layer of barrier material.
    Type: Grant
    Filed: January 9, 2003
    Date of Patent: December 26, 2006
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Beichao Zhang, Wuping Liu, Liang-Choo Hsia
  • Publication number: 20060128156
    Abstract: In accordance with the objectives of the invention a new method is provided for the creation of an interconnect pattern. The invention provides for a layer of Photo-Active Dielectric (PAD) to be used for the insulation material in which the interconnect pattern is created, this without the use of an overlying exposure mask of photoresist.
    Type: Application
    Filed: February 2, 2006
    Publication date: June 15, 2006
    Inventors: Wuping Liu, Bei Zhang, Liang Hsia
  • Publication number: 20060088995
    Abstract: A new method is provided for the creation of copper interconnects. A pattern of copper interconnects is created, a protective layer of semiconductor material is deposited over the surface of the created copper interconnects. The protective layer is patterned and etched, exposing the surface of the pattern of copper interconnects. The exposed copper surface is Ar sputtered after which a first barrier layer is deposited. The patterned and etched layer of protective material is removed, leaving in place overlying the pattern of copper interconnects a protective layer of first barrier material. A dielectric barrier layer, in the form of a layer of etch stop material, is deposited after which additional layers of dielectric interspersed with layers of etch stop material are deposited. Via and trench patterns are etched aligned with a copper pattern to which an electrical contact is to be established, the copper pattern being protected by the first layer of barrier material.
    Type: Application
    Filed: December 12, 2005
    Publication date: April 27, 2006
    Inventors: Beichao Zhang, Wuping Liu, Liang-Choo Hsia
  • Patent number: 7012022
    Abstract: In accordance with the objectives of the invention a new method is provided for the creation of an interconnect pattern. The invention provides for a layer of Photo-Active Dielectric (PAD) to be used for the insulation material in which the interconnect pattern is created, this without the use of an overlying exposure mask of photoresist.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: March 14, 2006
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Wuping Liu, Bei Chao Zhang, Liang Choo Hsia
  • Patent number: 6995087
    Abstract: An integrated circuit manufacturing method includes providing a base, forming a first conductor, forming a first barrier layer, forming a first dielectric layer, and forming a masking layer. The method further including forming a first via opening in the masking layer, forming a first trench opening in the masking layer, and simultaneously forming a second via opening in a layer under the masking layer, and forming a second trench opening through the masking layer and in the layer under the masking layer and simultaneously forming a third via opening in another layer under the masking layer. The method further including removing the first barrier layer using the third via opening and the masking layer to form a trench and a via, and filling the trench and the via with a conductor to form a trench and via conductor in contact with the first conductor.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: February 7, 2006
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Wuping Liu, Juan Boon Tan, Bei Chao Zhang, Alan Cuthbertson
  • Publication number: 20060003573
    Abstract: An aligned dual damascene opening structure, comprising the following. A structure having a metal structure formed thereover. A patterned layer stack over the metal structure; the layer stack comprising, in ascending order: a patterned bottom etch stop layer; a patterned lower dielectric material layer; a patterned middle etch stop layer; and a patterned middle dielectric material layer; the lower and middle dielectric layers being comprised of the same material. An upper trench opening in the patterned bottom etch stop layer and the patterned lower dielectric material layer; and a lower via opening in the patterned middle etch stop layer and the patterned middle dielectric material layer. The lower via opening being in communication with the upper trench opening. Wherein the upper trench opening and the lower via opening comprise an aligned dual damascene opening.
    Type: Application
    Filed: July 5, 2005
    Publication date: January 5, 2006
    Inventors: Yeow Lim, Wuping Liu, Tae Lee, Bei Zhang, Juan Boon Tan, Alan Cuthbertson, Chin Neo
  • Patent number: 6967156
    Abstract: A method of forming an aligned dual damascene opening, comprising including the following sequential steps. A layer stack is formed over the metal structure. The layer stack comprises, in ascending order: a bottom etch stop layer; a lower dielectric material layer; a middle etch stop layer; a middle dielectric material layer; and an upper dielectric layer. A patterned mask layer is formed over the patterned upper dielectric layer leaving exposed opposing portions of the patterned upper dielectric layer. The middle dielectric material layer is patterned to form an opening therein using the patterned mask layer and the exposed portions of the upper dielectric layer as masks.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: November 22, 2005
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Yeow Kheng Lim, Wuping Liu, Tae Jong Lee, Bei Chao Zhang, Juan Boon Tan, Alan Cuthbertson, Chin Chuan Neo
  • Publication number: 20050191851
    Abstract: A new method is provided for the creation of damascene copper interconnects. A method is provided whereby created copper surfaces are capped with a layer of barrier material. With the cap structure of barrier material, the surface of the created copper interconnect is shielded against outside influences such as effects of processing chemicals. As a result of the creation of a cap of barrier material, conventional concerns of copper oxidation, copper back-sputtering and the like are eliminated.
    Type: Application
    Filed: April 29, 2005
    Publication date: September 1, 2005
    Inventors: Wuping Liu, Beichao Zhang, Liang Hsia
  • Publication number: 20050127495
    Abstract: In accordance with the objectives of the invention a new design and method for the implementation thereof is provided in the form of an “oxide ring”. A conventional die is provided with a guard ring or sealing ring, which surrounds and isolates the active surface area of an individual semiconductor die. The “oxide ring” of the invention surrounds the guard ring or sealing ring and forms in this manner a mechanical stress release buffer between the sawing paths of the die and the active surface area of the singulated individual semiconductor die.
    Type: Application
    Filed: December 12, 2003
    Publication date: June 16, 2005
    Inventors: Fan Zhang, Bei Zhang, Wuping Liu, Kho Chok, Liang Hsia, Tae Lee, Juan Tan, Xian Wang
  • Publication number: 20050093158
    Abstract: In accordance with the objectives of the invention a new method is provided for the creation of an interconnect pattern. The invention provides for a layer of Photo-Active Dielectric (PAD) to be used for the insulation material in which the interconnect pattern is created, this without the use of an overlying exposure mask of photoresist.
    Type: Application
    Filed: October 30, 2003
    Publication date: May 5, 2005
    Inventors: Wuping Liu, Bei Zhang, Liang Hsia
  • Publication number: 20050090095
    Abstract: A method of forming an aligned dual damascene opening, comprising including the following sequential steps. A structure having a metal structure formed thereover is provided. A layer stack is formed over the metal structure. The layer stack comprises, in ascending order: a bottom etch stop layer; a lower dielectric material layer; a middle etch stop layer; a middle dielectric material layer; and an upper dielectric layer. The upper dielectric layer is patterned to form an opening exposing a portion of the underlying middle dielectric material layer. The opening having a width. A patterned mask layer is formed over the patterned upper dielectric layer leaving exposed opposing portions of the patterned upper dielectric layer. The middle dielectric material layer is patterned to form an opening therein using the patterned mask layer and the exposed portions of the upper dielectric layer as masks. The middle dielectric material layer opening exposing a portion of the middle etch stop layer.
    Type: Application
    Filed: October 22, 2003
    Publication date: April 28, 2005
    Inventors: Yeow Lim, Wuping Liu, Tae Lee, Bei Zhang, Juan Tan, Alan Cuthbertson, Chin Neo
  • Publication number: 20040137709
    Abstract: A new method is provided for the creation of copper interconnects. A pattern of copper interconnects is created, a protective layer of semiconductor material is deposited over the surface of the created copper interconnects. The protective layer is patterned and etched, exposing the surface of the pattern of copper interconnects. The exposed copper surface is Ar sputtered after which a first barrier layer is deposited. The patterned and etched layer of protective material is removed, leaving in place overlying the pattern of copper interconnects a protective layer of first barrier material. A dielectric barrier layer, in the form of a layer of etch stop material, is deposited after which additional layers of dielectric interspersed with layers of etch stop material are deposited. Via and trench patterns are etched aligned with a copper pattern to which an electrical contact is to be established, the copper pattern being protected by the first layer of barrier material.
    Type: Application
    Filed: January 9, 2003
    Publication date: July 15, 2004
    Applicant: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Beichao Zhang, Wuping Liu, Liang-Choo Hsia
  • Publication number: 20040121585
    Abstract: An integrated circuit manufacturing method includes providing a base, forming a first conductor, forming a first barrier layer, forming a first dielectric layer, and forming a masking layer. The method further including forming a first via opening in the masking layer, forming a first trench opening in the masking layer, and simultaneously forming a second via opening in a layer under the masking layer, and forming a second trench opening through the masking layer and in the layer under the masking layer and simultaneously forming a third via opening in another layer under the masking layer. The method further including removing the first barrier layer using the third via opening and the masking layer to form a trench and a via, and filling the trench and the via with a conductor to form a trench and via conductor in contact with the first conductor.
    Type: Application
    Filed: December 23, 2002
    Publication date: June 24, 2004
    Applicant: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Wuping Liu, Juan Boon Tan, Bei Chao Zhang, Alan Cuthbertson
  • Publication number: 20040048468
    Abstract: A new method is provided for the creation of damascene copper interconnects. A method is provided whereby created copper surfaces are capped with a layer of barrier material. With the cap structure of barrier material, the surface of the created copper interconnect is shielded against outside influences such as effects of processing chemicals. As a result of the creation of a cap of barrier material, conventional concerns of copper oxidation, copper back-sputtering and the like are eliminated.
    Type: Application
    Filed: September 10, 2002
    Publication date: March 11, 2004
    Applicant: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Wuping Liu, Beichao Zhang, Liang Choo Hsia