Patents by Inventor Chong Han Lim

Chong Han Lim 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: 11791170
    Abstract: A method of making semiconductor packages includes providing a first lead frame having a first plurality of semiconductor dies arranged along a first longitudinal axis, each of the first plurality of semiconductor dies having a first number of metal contacts; providing a second lead frame having a second plurality of semiconductor dies arranged along a second longitudinal axis, each of the second plurality of semiconductor dies having a second number of metal contacts, the second number of metal contacts different than the first number of metal contacts; and covering the first plurality of semiconductor dies in a first mold using a common semiconductor die cavity; covering the second plurality of semiconductor dies in a second mold using the common semiconductor die cavity.
    Type: Grant
    Filed: April 22, 2021
    Date of Patent: October 17, 2023
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Anis Fauzi Bin Abdul Aziz, Chong Han Lim, Lee Han Meng@Eugene Lee, Wei Fen Sueann Lim
  • Publication number: 20230317569
    Abstract: In some examples, a semiconductor package comprises a die pad, a semiconductor die on the die pad, and a mold compound covering the die pad and the semiconductor die. The semiconductor package includes a conductive component including a roughened surface, the roughened surface having a roughness ranging from an arithmetic mean surface height (SA) of 1.4 to 3.2. The mold compound is coupled to the roughened surface. The semiconductor package includes a bond wire coupling the semiconductor die to the roughened surface. The bond wire is directly coupled to the roughened surface without a precious metal positioned therebetween.
    Type: Application
    Filed: June 5, 2023
    Publication date: October 5, 2023
    Inventors: Yee Gin TEA, Chong Han LIM
  • Patent number: 11715678
    Abstract: In some examples, a semiconductor package comprises a die pad, a semiconductor die on the die pad, and a mold compound covering the die pad and the semiconductor die. The semiconductor package includes a conductive component including a roughened surface, the roughened surface having a roughness ranging from an arithmetic mean surface height (SA) of 1.4 to 3.2. The mold compound is coupled to the roughened surface. The semiconductor package includes a bond wire coupling the semiconductor die to the roughened surface. The bond wire is directly coupled to the roughened surface without a precious metal positioned therebetween.
    Type: Grant
    Filed: January 25, 2021
    Date of Patent: August 1, 2023
    Assignee: Texas Instruments Incorporated
    Inventors: Yee Gin Tea, Chong Han Lim
  • Patent number: 11626350
    Abstract: A method includes forming a leadframe assembly to have a pair of opposing sides, and having semiconductor die receiving portions extending between the opposing sides. The method also includes placing semiconductor dies on the leadframe assembly in the die receiving portions. Each die has a row of leads on each of two opposing sides of the die and a longitudinal axis parallel to the rows of leads. The longitudinal axis of each die is orthogonal to the opposing sides of the leadframe assembly. The method further includes applying mold compound to the semiconductor dies. The method includes punching through the leadframe assembly between the opposing sides using a first tool having a first tool longitudinal axis parallel to longitudinal axes of the dies.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: April 11, 2023
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Chong Han Lim, Lee Han Meng@Eugene Lee, Anis Fauzi Bin Abdul Aziz, Wei Fen Sueann Lim, Siew Kee Lee
  • Publication number: 20220208659
    Abstract: In some examples, a semiconductor package comprises a die pad, a semiconductor die on the die pad, and a mold compound covering the die pad and the semiconductor die. The semiconductor package includes a conductive component including a roughened surface, the roughened surface having a roughness ranging from an arithmetic mean surface height (SA) of 1.4 to 3.2. The mold compound is coupled to the roughened surface. The semiconductor package includes a bond wire coupling the semiconductor die to the roughened surface. The bond wire is directly coupled to the roughened surface without a precious metal positioned therebetween.
    Type: Application
    Filed: January 25, 2021
    Publication date: June 30, 2022
    Inventors: Yee Gin TEA, Chong Han LIM
  • Publication number: 20210242038
    Abstract: In accordance with at least one example of the disclosure, a system comprises a semiconductor package, comprising a first side surface having a first set of metal contacts extending therefrom; a second side surface having a second set of metal contacts extending therefrom; a top surface; a bottom surface; and an end surface meeting at least one of the first side surface, the second side surface, the top surface, and the bottom surface at a non-rounded edge.
    Type: Application
    Filed: April 22, 2021
    Publication date: August 5, 2021
    Inventors: Anis Fauzi BIN ABDUL AZIZ, Chong Han LIM, Lee Han Meng@Eugene LEE, Wei Fen Sueann LIM
  • Publication number: 20210202356
    Abstract: A method includes forming a leadframe assembly to have a pair of opposing sides, and having semiconductor die receiving portions extending between the opposing sides. The method also includes placing semiconductor dies on the leadframe assembly in the die receiving portions. Each die has a row of leads on each of two opposing sides of the die and a longitudinal axis parallel to the rows of leads. The longitudinal axis of each die is orthogonal to the opposing sides of the leadframe assembly. The method further includes applying mold compound to the semiconductor dies. The method includes punching through the leadframe assembly between the opposing sides using a first tool having a first tool longitudinal axis parallel to longitudinal axes of the dies.
    Type: Application
    Filed: April 3, 2020
    Publication date: July 1, 2021
    Inventors: Chong Han LIM, Lee Han Meng@Eugene LEE, Anis Fauzi BIN ABDUL AZIZ, Wei Fen, Sueann LIM, Siew Kee LEE
  • Publication number: 20210043466
    Abstract: In accordance with at least one example of the disclosure, a system comprises a semiconductor package, comprising a first side surface having a first set of metal contacts extending therefrom; a second side surface having a second set of metal contacts extending therefrom; a top surface; a bottom surface; and an end surface meeting at least one of the first side surface, the second side surface, the top surface, and the bottom surface at a non-rounded edge.
    Type: Application
    Filed: August 6, 2019
    Publication date: February 11, 2021
    Inventors: Anis Fauzi BIN ABDUL AZIZ, Chong Han LIM, Lee Han Meng@Eugene LEE, Wei Fen Sueann LIM
  • Patent number: 10381293
    Abstract: An integrated circuit (IC) package includes a first leadframe having a top surface and a bottom surface. An IC die has an active side coupled to the first leadframe bottom surface and has a back side. A second leadframe has a top surface and a bottom surface. The back side of said IC chip is coupled to the top surface of the second leadframe.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: August 13, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Lee Han Meng@Eugene Lee, Chong Han Lim, You Chye How
  • Publication number: 20170213781
    Abstract: An integrated circuit (IC) package includes a first leadframe having a top surface and a bottom surface. An IC die has an active side coupled to the first leadframe bottom surface and has a back side. A second leadframe has a top surface and a bottom surface. The back side of said IC chip is coupled to the top surface of the second leadframe.
    Type: Application
    Filed: January 21, 2016
    Publication date: July 27, 2017
    Inventors: Lee Han Meng@Eugene Lee, Chong Han Lim, You Chye How
  • Patent number: 6940299
    Abstract: In a method of testing an IC, short circuits between adjacent I/Os are tested by grounding alternate rows in one step, and alternate columns in another step, and, if necessary including a third step of testing any inadequately tested I/Os by identifying inadequately tested I/Os and then testing these. The identifying may include performing an AND operation on the two I/O configurations of the two first steps, the grounded I/Os being defined as logic 0 and the tested I/Os as logic 1. The third step involves grounding all power supply and all ground pins of the IC and testing the remaining I/Os that were inadequately tested in both of the first two steps.
    Type: Grant
    Filed: May 4, 2004
    Date of Patent: September 6, 2005
    Assignee: National Semiconductor Corporation
    Inventors: Chong Han Lim, Heng Wai Seng, Chee Keong Low