Patents by Inventor Kwai Hong Wong

Kwai Hong Wong 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: 20190259731
    Abstract: A method and apparatus for manufacturing substrate based fan-out wafer level packaging is provided. The method includes providing a substrate, applying a first photoresist pattern, depositing copper or a copper alloy, applying a second photoresist pattern, forming chip attach site pillars by depositing a layer of copper or copper alloy, and attaching a semiconductor device via a flip chip bonding. The attaching includes forming a plurality of interconnect bumps between the semiconductor device and the chip attach site and forming a space between the semiconductor device and the substrate. The method further includes encapsulating the semiconductor device, thinning a second side of the substrate, applying a ball grid array pattern on the second side and etching the second side with copper, applying a solder mask coating, attaching a plurality of ball drops, and singulating a unit.
    Type: Application
    Filed: April 29, 2019
    Publication date: August 22, 2019
    Applicant: Unisem (M) Berhad
    Inventors: Kim Heng Tan, Chan Wah Chai, Kwai Hong Wong
  • Publication number: 20190181095
    Abstract: A method is disclosed for manufacturing a discrete package for housing at least one integrated circuit die with electromagnetic interference shielding. The method may utilize a lead frame with a central die paddle and outwardly extending leads. The die paddle may have a top surface and an opposing bottom surface. The method may also have at least one integrated circuit die with a top surface and an opposing bottom surface. The integrated circuit die may be attached to the top surface of the die paddle. At least one conductive material bond may be established between the lead frame and the integrated circuit die. A dielectric material over mold may encapsulate the integrated circuit die and lead frame. A second dielectric material over mold may encapsulate the integrated circuit die and the lead frame. Further, a conductive coating may encapsulate the top and side surfaces of the package.
    Type: Application
    Filed: December 8, 2017
    Publication date: June 13, 2019
    Applicant: Unisem (M) Berhad
    Inventors: Kwai Hong Wong, Wai Kuen Lam
  • Publication number: 20180130768
    Abstract: A method and apparatus for manufacturing substrate based fan-out wafer level packaging is provided. The method includes providing a substrate, applying a first photoresist pattern, depositing copper or a copper alloy, applying a second photoresist pattern, forming chip attach site pillars by depositing a layer of copper or copper alloy, and attaching a semiconductor device via a flip chip bonding. The attaching includes forming a plurality of interconnect bumps between the semiconductor device and the chip attach site and forming a space between the semiconductor device and the substrate. The method further includes encapsulating the semiconductor device, thinning a second side of the substrate, applying a ball grid array pattern on the second side and etching the second side with copper, applying a solder mask coating, attaching a plurality of ball drops, and singulating a unit.
    Type: Application
    Filed: January 5, 2017
    Publication date: May 10, 2018
    Applicant: Unisem (M) Berhad
    Inventors: Kim Heng Tan, Chan Wah Chai, Kwai Hong Wong
  • Publication number: 20180130720
    Abstract: A method and apparatus for manufacturing substrate based fan-out wafer level packaging is provided. The method includes providing a substrate, applying a first photoresist pattern, depositing copper or a copper alloy, applying a second photoresist pattern, forming chip attach site pillars by depositing a layer of copper or copper alloy, and attaching a semiconductor device via a flip chip bonding. The attaching includes forming a plurality of interconnect bumps between the semiconductor device and the chip attach site and forming a space between the semiconductor device and the substrate. The method further includes encapsulating the semiconductor device, grinding a second side of the substrate, applying a ball grid array pattern on the second side and etching the second side with copper, applying a solder mask coating, attaching a plurality of ball drops, and singulating a unit.
    Type: Application
    Filed: November 9, 2016
    Publication date: May 10, 2018
    Applicant: Unisem (M) Berhad
    Inventors: Kim Heng Tan, Chan Wah Chai, Kwai Hong Wong
  • Publication number: 20180130769
    Abstract: A method and apparatus for manufacturing substrate based fan-out wafer level packaging is provided. The method includes providing a substrate, applying a first photoresist pattern, depositing copper or a copper alloy, applying a second photoresist pattern, forming chip attach site pillars by depositing a layer of copper or copper alloy, and attaching a semiconductor device via a flip chip bonding. The attaching includes forming a plurality of interconnect bumps between the semiconductor device and the chip attach site and forming a space between the semiconductor device and the substrate. The method further includes encapsulating the semiconductor device, thinning a second side of the substrate, applying a ball grid array pattern on the second side and etching the second side with copper, applying a solder mask coating, attaching a plurality of ball drops, and singulating a unit.
    Type: Application
    Filed: August 11, 2017
    Publication date: May 10, 2018
    Applicant: Unisem (M) Berhad
    Inventors: Kim Heng Tan, Chan Wah Chai, Kwai Hong Wong
  • Patent number: 8664753
    Abstract: A semiconductor package device having a protruding component portion and a method of packaging the semiconductor device is disclosed. The semiconductor device has a component, such as a leadframe, and a packaging mold body. The packaging mold body is formed around a portion of the component and a recess is formed in the packaging mold body adjacent the protruding portion of the component to prevent the protruding portion of the component from damaging other adjacent and abutting semiconductor devices.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: March 4, 2014
    Assignee: Infineon Technologies AG
    Inventors: Teck Sim Lee, Chee Voon Tan, Kwai Hong Wong
  • Patent number: 8334586
    Abstract: Stacked semiconductor chips. One embodiment provides a device having a first body. A first power semiconductor chip and first external contact elements is provides. A second body includes a second semiconductor chip and second external contact elements. The second body is placed over the first body. The first external contact elements and the second external contact elements define a first plane.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: December 18, 2012
    Assignee: Infineon Technologies AG
    Inventors: Ralf Otremba, Josef Hoeglauer, Xaver Schloegel, Soon Hock Tong, Kwai Hong Wong
  • Publication number: 20110215460
    Abstract: Stacked semiconductor chips. One embodiment provides a device having a first body. A first power semiconductor chip and first external contact elements is provides. A second body includes a second semiconductor chip and second external contact elements. The second body is placed over the first body. The first external contact elements and the second external contact elements define a first plane.
    Type: Application
    Filed: May 18, 2011
    Publication date: September 8, 2011
    Applicant: INFINEON TECHNOLOGIES AG
    Inventors: Ralf Otremba, Josef Hoeglauer, Xaver Schloegel, Soon Hock Tong, Kwai Hong Wong
  • Patent number: 7969018
    Abstract: Stacked semiconductor chips. One embodiment provides a device having a first body. A first power semiconductor chip and first external contact elements is provides. A second body includes a second semiconductor chip and second external contact elements. The second body is placed over the first body. The first external contact elements and the second external contact elements define a first plane.
    Type: Grant
    Filed: July 15, 2008
    Date of Patent: June 28, 2011
    Assignee: Infineon Technologies AG
    Inventors: Ralf Otremba, Josef Hoeglauer, Xaver Schloegel, Soon Hock Tong, Kwai Hong Wong
  • Publication number: 20110121439
    Abstract: A semiconductor package device having a protruding component portion and a method of packaging the semiconductor device is disclosed. The semiconductor device has a component, such as a leadframe, and a packaging mold body. The packaging mold body is formed around a portion of the component and a recess is formed in the packaging mold body adjacent the protruding portion of the component to prevent the protruding portion of the component from damaging other adjacent and abutting semiconductor devices.
    Type: Application
    Filed: November 25, 2009
    Publication date: May 26, 2011
    Applicant: INFINEON TECHNOLOGIES AG
    Inventors: Teck Sim Lee, Chee Voon Tan, Kwai Hong Wong
  • Publication number: 20100013106
    Abstract: Stacked semiconductor chips. One embodiment provides a device having a first body. A first power semiconductor chip and first external contact elements is provides. A second body includes a second semiconductor chip and second external contact elements. The second body is placed over the first body. The first external contact elements and the second external contact elements define a first plane.
    Type: Application
    Filed: July 15, 2008
    Publication date: January 21, 2010
    Applicant: INFINEON TECHNOLOGIES AG
    Inventors: Ralf Otremba, Josef Hoeglauer, Xaver Schloegel, Soon Hock Tong, Kwai Hong Wong