Patents by Inventor Yong Lam Wai

Yong Lam Wai 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: 8674488
    Abstract: A method of manufacturing an LED package includes mounting a large panel frame/substrate (LPF/S) having a substantially square shape to a ring. The LPF/S includes a plurality of die pads and a corresponding plurality of leads arranged in a matrix pattern. Each of the die pads includes a planar chip attach surface. An LED chip is attached to the planar chip attach surface of each of the die pads. An encapsulant material is applied overlaying the LED chips and at least a part of the LPF/S. Each die pad and corresponding leads are separated from the LPF/S to form individual LED packages. The steps of attaching the LED chips and applying the encapsulant material are performed while the LPF/S is mounted to the ring.
    Type: Grant
    Filed: February 13, 2013
    Date of Patent: March 18, 2014
    Assignee: Carsem (M) SDN. BHD.
    Inventors: Yong Lam Wai, Chan Boon Meng, Phang Hon Keat
  • Patent number: 8535988
    Abstract: A method of manufacturing an integrated circuit package includes mounting a large panel leadframe having a substantially square shape to a ring. The large panel leadframe includes a plurality of die pads and a corresponding plurality of leads arranged in a matrix pattern. An integrated circuit chip is attached to each of the die pads. An encapsulant material is applied over the integrated circuit chips and at least a part of the large panel leadframe. Each of the die pads and its corresponding leads are separated from the large panel leadframe to form individual integrated circuit packages. The steps of attaching the integrated circuit chips and applying the encapsulant material are performed while the large panel leadframe is mounted to a taped ring.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: September 17, 2013
    Assignee: Carsem (M) Sdn. Bhd.
    Inventors: Yong Lam Wai, Chan Boon Meng, Phang Hon Keat
  • Publication number: 20130109137
    Abstract: A method of manufacturing an integrated circuit package includes mounting a large panel leadframe having a substantially square shape to a ring. The large panel leadframe includes a plurality of die pads and a corresponding plurality of leads arranged in a matrix pattern. An integrated circuit chip is attached to each of the die pads. An encapsulant material is applied over the integrated circuit chips and at least a part of the large panel leadframe. Each of the die pads and its corresponding leads are separated from the large panel leadframe to form individual integrated circuit packages. The steps of attaching the integrated circuit chips and applying the encapsulant material are performed while the large panel leadframe is mounted to a taped ring.
    Type: Application
    Filed: May 25, 2012
    Publication date: May 2, 2013
    Applicant: CARSEM (M) SDN. BHD
    Inventors: Yong Lam Wai, Chan Boon Meng, Phang Hon Keat
  • Patent number: 8394675
    Abstract: A method of manufacturing an LED package includes mounting a large panel frame/substrate (LPF/S) having a substantially square shape to a ring. The LPF/S includes a plurality of die pads and a corresponding plurality of leads arranged in a matrix pattern. Each of the die pads includes a planar chip attach surface. An LED chip is attached to the planar chip attach surface of each of the die pads. An encapsulant material is applied overlaying the LED chips and at least a part of the LPF/S. Each die pad and corresponding leads are separated from the LPF/S to form individual LED packages. The steps of attaching the LED chips and applying the encapsulant material are performed while the LPF/S is mounted to the ring.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: March 12, 2013
    Assignee: Carsem (M) Sdn. Bhd.
    Inventors: Yong Lam Wai, Chan Boon Meng, Phang Hon Keat
  • Patent number: 8314479
    Abstract: An LED package includes a die pad having a bottom surface, an upper surface and a centrally located recessed cavity. The recessed cavity has a chip attach surface between the bottom surface and upper surface and sidewalls that extend from the recessed chip attach surface to the upper surface. The package additionally has leads arranged on opposing sides of the die pad. The leads have a bottom surface that is coextensive with the bottom surface of the die pad and an upper surface coextensive with the upper surface of the die pad. An LED chip is attached to the chip attach surface. The package further includes a package body having an encapsulant which fills space between the die pad and leads forming a bottom encapsulant surface that is coextensive with the bottom surfaces of the die pad and leads.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: November 20, 2012
    Assignee: Carsem (M) SDN. BHD.
    Inventors: Yong Lam Wai, Chan Boon Meng, Phang Hon Keat
  • Publication number: 20120104421
    Abstract: An LED package includes a die pad having a bottom surface, an upper surface and a centrally located recessed cavity. The recessed cavity has a chip attach surface between the bottom surface and upper surface and sidewalls that extend from the recessed chip attach surface to the upper surface. The package additionally has leads arranged on opposing sides of the die pad. The leads have a bottom surface that is coextensive with the bottom surface of the die pad and an upper surface coextensive with the upper surface of the die pad. An LED chip is attached to the chip attach surface. The package further includes a package body having an encapsulant which fills space between the die pad and leads forming a bottom encapsulant surface that is coextensive with the bottom surfaces of the die pad and leads.
    Type: Application
    Filed: May 24, 2011
    Publication date: May 3, 2012
    Applicant: CARSEM (M) SDN. BHD.
    Inventors: Yong Lam Wai, Chan Boon Meng, Phang Hon Keat
  • Publication number: 20120107974
    Abstract: A method of manufacturing an LED package includes mounting a large panel frame/substrate (LPF/S) having a substantially square shape to a ring. The LPF/S includes a plurality of die pads and a corresponding plurality of leads arranged in a matrix pattern. Each of the die pads includes a planar chip attach surface. An LED chip is attached to the planar chip attach surface of each of the die pads. An encapsulant material is applied overlaying the LED chips and at least a part of the LPF/S. Each die pad and corresponding leads are separated from the LPF/S to form individual LED packages. The steps of attaching the LED chips and applying the encapsulant material are performed while the LPF/S is mounted to the ring.
    Type: Application
    Filed: May 26, 2011
    Publication date: May 3, 2012
    Applicant: CARSEM (M) SDN. BHD.
    Inventors: Yong Lam Wai, Chan Boon Meng, Phang Hon Keat
  • Publication number: 20120043655
    Abstract: A method of fabricated a wafer level package is described. In one embodiment, the method includes fabricating at least one active device on a semiconductor wafer that has not been singulated, with the active device having a plurality of bonding pads exposed at an upper surface of the wafer. Prior to singulating the semiconductor wafer, a plurality of corresponding stud bumps on the plurality of bonding pads with a wire bonding tool are formed. Thereafter, a molding encapsulation layer is applied over the semiconductor wafer leaving an upper portion of each of the plurality of stud bumps exposed.
    Type: Application
    Filed: November 1, 2011
    Publication date: February 23, 2012
    Applicant: Carsem (M) Sdn. Bhd.
    Inventors: Lily Khor, Yong Lam Wai, Lau Choong Keong
  • Patent number: 8071470
    Abstract: A method of fabricated a wafer level package is described. In one embodiment, the method includes fabricating at least one active device on a semiconductor wafer that has not been singulated, with the active device having a plurality of bonding pads exposed at an upper surface of the wafer. Prior to singulating the semiconductor wafer, a plurality of corresponding stud bumps on the plurality of bonding pads with a wire bonding tool are formed. Thereafter, a molding encapsulation layer is applied over the semiconductor wafer leaving an upper portion of each of the plurality of stud bumps exposed.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: December 6, 2011
    Assignee: Carsem (M) SDN. BHD.
    Inventors: Lily Khor, Yong Lam Wai, Lau Choong Keong
  • Publication number: 20100102444
    Abstract: A method of fabricated a wafer level package is described. In one embodiment, the method includes fabricating at least one active device on a semiconductor wafer that has not been singulated, with the active device having a plurality of bonding pads exposed at an upper surface of the wafer. Prior to singulating the semiconductor wafer, a plurality of corresponding stud bumps on the plurality of bonding pads with a wire bonding tool are formed. Thereafter, a molding encapsulation layer is applied over the semiconductor wafer leaving an upper portion of each of the plurality of stud bumps exposed.
    Type: Application
    Filed: May 29, 2009
    Publication date: April 29, 2010
    Applicant: Carsem (M) Sdn. Bhd.
    Inventors: Lily Khor, Yong Lam Wai, Lau Choon Keong