Patents by Inventor Roshni Biswas

Roshni Biswas 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: 11972194
    Abstract: A method for determining a patterning device pattern. The method includes obtaining (i) an initial patterning device pattern having at least one feature, and (ii) a desired feature size of the at least one feature, obtaining, based on a patterning process model, the initial patterning device pattern and a target pattern for a substrate, a difference value between a predicted pattern of the substrate image by the initial patterning device and the target pattern for the substrate, determining a penalty value related the manufacturability of the at least one feature, wherein the penalty value varies as a function of the size of the at least one feature, and determining the patterning device pattern based on the initial patterning device pattern and the desired feature size such that a sum of the difference value and the penalty value is reduced.
    Type: Grant
    Filed: December 28, 2022
    Date of Patent: April 30, 2024
    Assignee: ASML NETHERLANDS B.V.
    Inventors: Roshni Biswas, Rafael C. Howell, Cuiping Zhang, Ningning Jia, Jingjing Liu, Quan Zhang
  • Patent number: 11789371
    Abstract: A method including: obtaining a thin-mask transmission function of a patterning device and a M3D model for a lithographic process, wherein the thin-mask transmission function is a continuous transmission mask (CTM) and the M3D model at least represents a portion of M3D attributable to multiple edges of structures on the patterning device; determining a M3D mask transmission function of the patterning device by using the thin-mask transmission function and the M3D model; and determining an aerial image produced by the patterning device and the lithographic process, by using the M3D mask transmission function.
    Type: Grant
    Filed: August 5, 2022
    Date of Patent: October 17, 2023
    Assignee: ASML NETHERLANDS B.V.
    Inventors: Yu Cao, Yen-Wen Lu, Peng Liu, Rafael C. Howell, Roshni Biswas
  • Publication number: 20230141799
    Abstract: A method for determining a patterning device pattern. The method includes obtaining (i) an initial patterning device pattern having at least one feature, and (ii) a desired feature size of the at least one feature, obtaining, based on a patterning process model, the initial patterning device pattern and a target pattern for a substrate, a difference value between a predicted pattern of the substrate image by the initial patterning device and the target pattern for the substrate, determining a penalty value related the manufacturability of the at least one feature, wherein the penalty value varies as a function of the size of the at least one feature, and determining the patterning device pattern based on the initial patterning device pattern and the desired feature size such that a sum of the difference value and the penalty value is reduced.
    Type: Application
    Filed: December 28, 2022
    Publication date: May 11, 2023
    Applicant: ASML NETHERLANDS B.V.
    Inventors: Roshni BISWAS, Rafael C. HOWELL, Cuiping ZHANG, Ningning JIA, Jingjing LIU, Quan ZHANG
  • Patent number: 11580289
    Abstract: A method for determining a patterning device pattern. The method includes obtaining (i) an initial patterning device pattern having at least one feature, and (ii) a desired feature size of the at least one feature, obtaining, based on a patterning process model, the initial patterning device pattern and a target pattern for a substrate, a difference value between a predicted pattern of the substrate image by the initial patterning device and the target pattern for the substrate, determining a penalty value related the manufacturability of the at least one feature, wherein the penalty value varies as a function of the size of the at least one feature, and determining the patterning device pattern based on the initial patterning device pattern and the desired feature size such that a sum of the difference value and the penalty value is reduced.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: February 14, 2023
    Assignee: ASML Netherlands B.V.
    Inventors: Roshni Biswas, Rafael C. Howell, Cuiping Zhang, Ningning Jia, Jingjing Liu, Quan Zhang
  • Publication number: 20220373892
    Abstract: A method including: obtaining a thin-mask transmission function of a patterning device and a M3D model for a lithographic process, wherein the thin-mask transmission function is a continuous transmission mask (CTM) and the M3D model at least represents a portion of M3D attributable to multiple edges of structures on the patterning device; determining a M3D mask transmission function of the patterning device by using the thin-mask transmission function and the M3D model; and determining an aerial image produced by the patterning device and the lithographic process, by using the M3D mask transmission function.
    Type: Application
    Filed: August 5, 2022
    Publication date: November 24, 2022
    Applicant: ASML NETHERLANDS B.V.
    Inventors: Yu CAO, Yen-Wen LU, : Peng LIU, Rafael C. HOWELL, Roshni BISWAS
  • Patent number: 11409203
    Abstract: A method including: obtaining a thin-mask transmission function of a patterning device and a M3D model for a lithographic process, wherein the thin-mask transmission function is a continuous transmission mask (CTM) and the M3D model at least represents a portion of M3D attributable to multiple edges of structures on the patterning device; determining a M3D mask transmission function of the patterning device by using the thin-mask transmission function and the M3D model; and determining an aerial image produced by the patterning device and the lithographic process, by using the M3D mask transmission function.
    Type: Grant
    Filed: May 21, 2021
    Date of Patent: August 9, 2022
    Assignee: ASML Netherlands B.V.
    Inventors: Yu Cao, Yen-Wen Lu, Peng Liu, Rafael C. Howell, Roshni Biswas
  • Publication number: 20220050381
    Abstract: A method for determining a patterning device pattern. The method includes obtaining (i) an initial patterning device pattern having at least one feature, and (ii) a desired feature size of the at least one feature, obtaining, based on a patterning process model, the initial patterning device pattern and a target pattern for a substrate, a difference value between a predicted pattern of the substrate image by the initial patterning device and the target pattern for the substrate, determining a penalty value related the manufacturability of the at least one feature, wherein the penalty value varies as a function of the size of the at least one feature, and determining the patterning device pattern based on the initial patterning device pattern and the desired feature size such that a sum of the difference value and the penalty value is reduced.
    Type: Application
    Filed: October 29, 2019
    Publication date: February 17, 2022
    Applicant: ASML NETHERLANDS B.V.
    Inventors: Roshni BISWAS, Rafael C. HOWELL, Cuiping ZHANG, Ningning JIA, Jingjing LIU, Quan ZHANG
  • Publication number: 20210271173
    Abstract: A method including: obtaining a thin-mask transmission function of a patterning device and a M3D model for a lithographic process, wherein the thin-mask transmission function is a continuous transmission mask (CTM) and the M3D model at least represents a portion of M3D attributable to multiple edges of structures on the patterning device; determining a M3D mask transmission function of the patterning device by using the thin-mask transmission function and the M3D model; and determining an aerial image produced by the patterning device and the lithographic process, by using the M3D mask transmission function.
    Type: Application
    Filed: May 21, 2021
    Publication date: September 2, 2021
    Applicant: ASML NETHERLANDS B.V.
    Inventors: Yu CAO, Yen-Wen LU, Peng LIU, Rafael C. HOWELL, Roshni BISWAS
  • Patent number: 11016395
    Abstract: A method including: obtaining a thin-mask transmission function of a patterning device and a M3D model for a lithographic process, wherein the thin-mask transmission function represents a continuous transmission mask and the M3D model at least represents a portion of M3D attributable to multiple edges of structures on the patterning device; determining a M3D mask transmission function of the patterning device by using the thin-mask transmission function and the M3D model; and determining an aerial image produced by the patterning device and the lithographic process, by using the M3D mask transmission function.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: May 25, 2021
    Assignee: ASML Netherlands B.V.
    Inventors: Yu Cao, Yen-Wen Lu, Peng Liu, Rafael C. Howell, Roshni Biswas