Patents by Inventor Hiranmay BISWAS

Hiranmay 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).

  • Publication number: 20250167120
    Abstract: A conductive line structure (in an integrated circuit (IC)) includes: in a first layer of metallization (M_first layer), M_first segments extending in a first direction and being aligned to M_first routing tracks, the M_first segments including first and second ones thereof; and in a second layer of metallization (M_second layer) over the M_first layer, M_second segments extending in a second direction perpendicular to the first direction and being aligned to M_second routing tracks, the M_second segments including first and second ones thereof correspondingly overlapping the first and second M_first segments; and the first and second M_first segments being aligned to different first and second ones of the M_first routing tracks; and relative to the first direction, the first and second M_first segments being separated by a first gap having a size substantially equal to or greater than a minimum permissible offset between co-track aligned M_first segments.
    Type: Application
    Filed: January 17, 2025
    Publication date: May 22, 2025
    Inventors: Hiranmay BISWAS, Chi-Yeh YU, Kuo-Nan YANG, Chung-Hsing WANG, Stefan RUSU, Chin-Shen LIN
  • Publication number: 20250117564
    Abstract: A method of forming an integrated circuit device includes forming first segments extending in a first direction in a first conductive layer; forming second segments extending in the first direction in the first conductive layer, the forming the first and second segments including: interspersing the first and second segments relative to a second direction perpendicular to the first direction such that: the first segments are symmetrically spaced apart relative to each other, the second segments are symmetrically spaced apart relative to each other, and ones of the second segments are substantially asymmetrically spaced between corresponding adjacent ones of the first segments.
    Type: Application
    Filed: December 16, 2024
    Publication date: April 10, 2025
    Inventors: Hiranmay BISWAS, Chung-Hsing WANG, Chin-Shen LIN, Kuo-Nan YANG
  • Publication number: 20240394458
    Abstract: A method (of generating a revised layout diagram of a conductive line structure for an IC) including: for a first set of pillar patterns that represents portions of an M(i) layer of metallization and where i is a non-negative number, the first set including first and second pillar patterns which extend in a first direction, are non-overlapping of each other with respect to the first direction, are aligned with each other and have a first distance of separation, determining a first distance of separation as between corresponding immediately adjacent members of the first set; recognizing that the first distance is less than a transverse routing (TVR) separation threshold for an M(i+j) layer of metallization, where j is an integer and j?2; and increasing the first distance so as to become a second distance which is greater than the TVR separation threshold of the M(i+j) layer.
    Type: Application
    Filed: July 30, 2024
    Publication date: November 28, 2024
    Inventors: Hiranmay BISWAS, Chung-Hsing WANG, Kuo-Nan YANG, Yi-Kan CHENG
  • Publication number: 20240234321
    Abstract: A conductive line structure includes: first and second offset sets of long pillars that are substantially coaxial on an intra-set basis; a third set of offset short pillars, the short pillars being: overlapping of long pillars in the first and second sets; and organized into groups of first quantities of the short pillars; each of the groups being overlapping of and electrically coupled between a pair of one of the long pillars in the first set and a one of the long pillars in the second set such that, in each of the groups, each short pillar being overlapping of and electrically coupled between the pair; and each long pillar in each of the first and second sets being overlapped by a second quantity of short pillars in the third set and being electrically coupled to same; and the first quantity being less than the second quantity.
    Type: Application
    Filed: February 1, 2024
    Publication date: July 11, 2024
    Inventors: Hiranmay BISWAS, Chi-Yeh YU, Kuo-Nan YANG, Chung-Hsing WANG, Stefan RUSU, Chin-Shen LIN
  • Publication number: 20230401370
    Abstract: A method executed at least partially by a processor includes determining a power parameter associated with a cell in an integrated circuit (IC) layout diagram. In response to the determined power parameter exceeding a design criterion, the method further includes performing a modification of the IC layout diagram, the modification including at least one of altering a placement of the cell in the IC layout diagram or modifying a power delivery path to the cell. The determining the power parameter is performed before a routing operation in the IC layout diagram.
    Type: Application
    Filed: August 9, 2023
    Publication date: December 14, 2023
    Inventors: Chin-Shen LIN, Hiranmay BISWAS, Kuo-Nan YANG, Chung-Hsing WANG
  • Publication number: 20230376667
    Abstract: A method (of fabricating a power grid (PG) arrangement in a semiconductor) includes: forming a first layer including conductive lines (C_1st lines) which include interspersed alpha C_1st lines and beta C_1st lines designated correspondingly for first and second reference voltages; and forming a second layer over the first layer, the second layer including segments (C_2nd segments) which include interspersed alpha C_2nd segments and beta C_2nd segments designated correspondingly for the first and second reference voltages; and, relative to the first direction, each beta C_2nd segment being substantially asymmetrically between corresponding adjacent ones of the alpha C_2nd segments.
    Type: Application
    Filed: July 31, 2023
    Publication date: November 23, 2023
    Inventors: Hiranmay BISWAS, Chung-Hsing WANG, Chin-Shen LIN, Kuo-Nan YANG
  • Publication number: 20230274073
    Abstract: A method of manufacturing a semiconductor device includes forming a set of cells; forming a PG layer, including forming a first metallization layer including forming first conductor portions and second conductor portions, corresponding ones of the first conductor portions being arranged in first pairs; corresponding ones of the second conductor portions being arranged in second pairs; the cells being arranged to overlap at least one of the first and second conductor portions of the first metallization layer relative to the first direction; and forming a second metallization layer over the first metallization layer, the second metallization layer including forming third conductor portions and fourth conductor portions, the cells being arranged in a repeating relationship that each cell overlaps, an intersection of a corresponding one of the first or second pairs with at least a corresponding one of the third conductor portions or a corresponding one of the fourth conductor portions.
    Type: Application
    Filed: April 27, 2023
    Publication date: August 31, 2023
    Inventors: Hiranmay BISWAS, Chung-Hsing WANG, Kuo-Nan YANG
  • Publication number: 20230121153
    Abstract: An integrated circuit includes a cell layer including a first cell and a second cell, a first metal layer over the cell layer and having a first conductive feature, a second metal layer over the first metal layer and having a second conductive feature, and a first via between the first metal layer and the second metal layer and connecting the first conductive feature to the second conductive feature. The first conductive feature spans over a boundary between the first and second cells, and has a lengthwise direction along a first direction. The second conductive feature spans over the boundary between the first and second cells, and has a lengthwise direction along a second direction that is perpendicular to the first direction.
    Type: Application
    Filed: December 21, 2022
    Publication date: April 20, 2023
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Fong-Yuan CHANG, Kuo-Nan YANG, Chung-Hsing WANG, Lee-Chung LU, Sheng-Fong CHEN, Po-Hsiang HUANG, Hiranmay BISWAS, Sheng-Hsiung CHEN, Aftab Alam KHAN
  • Publication number: 20220292247
    Abstract: A method (of fabricating a power grid (PG) arrangement in a semiconductor) includes: forming a first layer including conductive lines (C_1st lines)which include interspersed alpha C_1st lines and beta C_1st lines designated correspondingly for first and second reference voltages; and forming a second layer over the first layer, the second layer including segments (C_2nd segments) which include interspersed alpha C_2nd segments and beta C_2nd segments designated correspondingly for the first and second reference voltages; and, relative to the first direction, each beta C_2nd segment being substantially asymmetrically between corresponding adjacent ones of the alpha C_2nd segments.
    Type: Application
    Filed: May 31, 2022
    Publication date: September 15, 2022
    Inventors: Hiranmay BISWAS, Chung-Hsing WANG, Chin-Shen LIN, Kuo-Nan YANG
  • Publication number: 20220093513
    Abstract: A method of forming an IC structure includes forming first and second power rails at a power rail level. First metal segments are formed at a first metal level above the power rail level. Each first metal segment of the plurality of first metal segments overlap one or both of the first power rail or the second power rail. First vias are formed between the power rail level and the first metal level. Second metal segments are formed at a second metal level above the first metal level. At least one second metal segment of the plurality of second metal segments overlaps the first power rail. At least one second metal segment of the plurality of second metal segments overlaps the second power rail. A plurality of second vias are formed between the first metal level and the second metal level.
    Type: Application
    Filed: December 8, 2021
    Publication date: March 24, 2022
    Inventors: Hiranmay BISWAS, Chi-Yeh YU, Kuo-Nan YANG, Chung-Hsing WANG, Stefan RUSU, Chin-Shen LIN
  • Publication number: 20220075922
    Abstract: A system includes a processor configured to determine a power parameter associated with a cell in an integrated circuit (IC) layout diagram. In response to the determined power parameter exceeding a design criterion, the processor is configured to perform a modification of the IC layout diagram, the modification including at least one of altering a placement of the cell in the IC layout diagram or modifying a power delivery path to the cell. The power parameter includes at least one of a power density of a tile containing the cell, a voltage drop of the tile containing the cell, or a voltage drop of the cell.
    Type: Application
    Filed: November 16, 2021
    Publication date: March 10, 2022
    Inventors: Chin-Shen LIN, Hiranmay BISWAS, Kuo-Nan YANG, Chung-Hsing WANG
  • Publication number: 20220043957
    Abstract: A method (of generating a revised layout diagram of a conductive line structure for an IC) including: for a first set of pillar patterns that represents portions of an M(i) layer of metallization and where i is a non-negative number, the first set including first and second pillar patterns which extend in a first direction, are non-overlapping of each other with respect to the first direction, are aligned with each other and have a first distance of separation, determining a first distance of separation as between corresponding immediately adjacent members of the first set; recognizing that the first distance is less than a transverse routing (TVR) separation threshold for an M(i+j) layer of metallization, where j is an integer and j?2; and increasing the first distance so as to become a second distance which is greater than the TVR separation threshold of the M(i+j) layer.
    Type: Application
    Filed: October 26, 2021
    Publication date: February 10, 2022
    Inventors: Hiranmay BISWAS, Chung-Hsing WANG, Kuo-Nan YANG, Yi-Kan CHENG
  • Publication number: 20210374317
    Abstract: A method (of revising an initial layout diagram of a wire routing arrangement, the initial layout diagram and versions thereof being stored on a non-transitory computer-readable medium) includes identifying, in a first conductance layer of the initial layout diagram, a routed pattern and a dummy pattern, each of which extends in a first direction and revising to form a revised layout diagram. The routed patterns are functional in a representation of a circuit and the dummy patterns are non-functional in the representation of the circuit. The revising includes connecting first ends of the corresponding routed and dummy patterns and connecting second ends of the corresponding routed and dummy patterns.
    Type: Application
    Filed: August 6, 2021
    Publication date: December 2, 2021
    Inventors: Ritesh KUMAR, Hiranmay BISWAS, Shu-Yi YING, Kuo-Nan YANG, Chung-Hsing WANG
  • Publication number: 20210342515
    Abstract: Power grid of an integrated circuit (IC) is provided. A plurality of first power lines are formed in a first metal layer. A plurality of second power lines are formed in the first metal layer and parallel to the first power lines, and the first and second power lines are interlaced in the first metal layer. A plurality of third power lines formed in a second metal layer, and the third power lines are perpendicular to the first power lines. A plurality of fourth power lines are formed in the second metal layer and parallel to the third power lines, and the third and fourth power lines are interlaced in the second metal layer. Distances from each of the third power lines to two adjacent fourth power lines are different, and distances from each of the fourth power lines to two adjacent third power lines are the same.
    Type: Application
    Filed: July 16, 2021
    Publication date: November 4, 2021
    Inventors: Hiranmay BISWAS, Kuo-Nan YANG, Chung-Hsing WANG
  • Publication number: 20210217743
    Abstract: A method includes forming a cell layer including first and second cells, each of which is configured to perform a circuit function; forming a first metal layer above the cell layer and including a first conductive feature and a second conductive feature extending along a first direction, in which the first conductive feature extends from the first cell into the second cell, and in which a shortest distance between a center line of the first conductive feature and a center line of the second conductive feature along a second direction is less than a width of the first conductive feature, and the second direction is perpendicular to the first direction; forming a first conductive via interconnecting the cell layer and the conductive feature.
    Type: Application
    Filed: March 26, 2021
    Publication date: July 15, 2021
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Fong-Yuan CHANG, Kuo-Nan YANG, Chung-Hsing WANG, Lee-Chung LU, Sheng-Fong CHEN, Po-Hsiang HUANG, Hiranmay BISWAS, Sheng-Hsiung CHEN, Aftab Alam KHAN
  • Publication number: 20210209283
    Abstract: A method (of fabricating a power grid (PG) arrangement in a semiconductor) includes: forming a first conductive layer including segments which are conductive, including forming first segments designated for a first reference voltage and second segments designated for a second reference voltage, and interspersing the first and second segments; relative to a first direction; and forming a second conductive layer over the first conductive layer, the second conductive layer including segments that are conductive, including forming third segments designated for the first reference voltage and fourth segments designated for the second reference voltage, interspersing the third and fourth segments relative to a second direction, the second direction being perpendicular to the first direction, and arranging the segments in the second conductive layer substantially asymmetrically including, relative to the first direction, locating each fourth segment substantially asymmetrically between corresponding adjacent ones of
    Type: Application
    Filed: March 8, 2021
    Publication date: July 8, 2021
    Inventors: Hiranmay BISWAS, Chung-Hsing WANG, Chin-Shen LIN, Kuo-Nan YANG
  • Publication number: 20210110098
    Abstract: A semiconductor structure includes a power grid layer (including a first metallization layer) and a set of cells. The first metallization layer includes: conductive first and second portions which provide correspondingly a power-supply voltage and a reference voltage, and which have corresponding long axes oriented substantially parallel to a first direction; and conductive third and fourth portions which provide correspondingly the power-supply voltage and the reference voltage, and which have corresponding long axes oriented substantially parallel to a second direction substantially perpendicular to the first direction. The set of cells is located below the PG layer. Each cell is monostate cell which lacks an input signal and has a single output state. The cells are arranged to overlap at least one of the first and second portions in a repeating relationship with respect to at least one of the first or second portions of the first metallization layer.
    Type: Application
    Filed: December 22, 2020
    Publication date: April 15, 2021
    Inventors: Hiranmay BISWAS, Chung-Hsing WANG, Kuo-Nan YANG
  • Publication number: 20200279812
    Abstract: A power grid of an integrated circuit (IC) is provided. The power grid includes a plurality of first power lines formed in a first metal layer, a plurality of second power lines formed in the first metal layer, a plurality of third power lines formed in a second metal layer and a plurality of fourth power lines formed in the second metal layer. The second power lines are parallel to the first power lines, and the first and second power lines are interlaced in the first metal layer. The third power lines are perpendicular to the first power lines. The fourth power lines are parallel to the third power lines, and the third and fourth power lines are interlaced in the second metal layer. A first power pitch between two adjacent third power lines is greater than a second power pitch between two adjacent fourth power lines.
    Type: Application
    Filed: May 15, 2020
    Publication date: September 3, 2020
    Inventors: Hiranmay BISWAS, Kuo-Nan YANG, Chung-Hsing WANG
  • Publication number: 20200175220
    Abstract: A method of a layout diagram (of a conductive line structure for an IC) including: for a first set of pillar patterns included in an initial layout diagram that represents portions of an M(i) layer of metallization and where i is a non-negative number, the first set including first and second pillar patterns which are non-overlapping of each other, which have long axes that are substantially collinear with a reference line, and which have a first distance of separation, determining a first distance of separation as between corresponding immediately adjacent members of the first set; recognizing that the first distance is less than a transverse routing (TVR) separation threshold for an M(i+j) layer of metallization, where j is an integer and j?2; and increasing the first distance so as to become a second distance which is greater than the TVR separation threshold of the M(i+j) layer.
    Type: Application
    Filed: November 27, 2019
    Publication date: June 4, 2020
    Inventors: Hiranmay BISWAS, Chung-Hsing WANG, Kuo-Nan YANG, Yi-Kan CHENG
  • Publication number: 20200134121
    Abstract: A method includes determining a cell loading of a cell in an integrated circuit (IC) layout diagram. Based on the determined cell loading, a power parameter associated with the cell is determined. In response to the determined power parameter exceeding a design criterion, at least one of altering a placement of the cell in the IC layout diagram or modifying a power delivery path to the cell is performed. At least one of the determining the cell loading, the determining the power parameter, the altering the placement of the cell, or the modifying the power delivery path is executed by a processor.
    Type: Application
    Filed: October 3, 2019
    Publication date: April 30, 2020
    Inventors: Chin-Shen LIN, Chung-Hsing WANG, Kuo-Nan YANG, Hiranmay BISWAS