Patents by Inventor Kuan-Hsiang Mao

Kuan-Hsiang Mao 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: 20240194486
    Abstract: A method for forming a packaged integrated circuit device includes providing a semiconductor wafer having a plurality of integrated circuit devices, each integrated circuit device extending into the semiconductor wafer to a first depth, and grinding a backside of the silicon wafer to no more than the first depth. The method further includes forming a backside cut between the integrated circuit devices. The backside cut extends to within the first depth, but the backside cut does not extend completely through the semiconductor wafer. The backside cut exposes a plurality of edges of each of the integrated circuit devices. The method further includes depositing, on the backside of the wafer, a metallization layer on a bottom surface of the integrated circuit devices and on the edges.
    Type: Application
    Filed: February 19, 2024
    Publication date: June 13, 2024
    Inventors: Kuan-Hsiang Mao, Wen Hung Huang, Che Ming Fang, Yufu Liu
  • Publication number: 20240136238
    Abstract: A method of forming a semiconductor device is provided. The method includes forming a first cavity at a first major surface of a first encapsulant. A first semiconductor die is affixed on the first major surface of the first encapsulant and a second semiconductor die is affixed on a bottom surface of the first cavity. A second encapsulant encapsulates the first semiconductor die, the second semiconductor die, and at least exposed portions of the first major surface of the first encapsulant. A package substrate is formed on a first major surface of the second encapsulant. The package substrate includes conductive traces interconnected to the first semiconductor die and the second semiconductor die.
    Type: Application
    Filed: October 23, 2022
    Publication date: April 25, 2024
    Inventors: Kuan-Hsiang Mao, Zhiwei Gong, Neil Thomas Tracht
  • Publication number: 20240105659
    Abstract: A method of manufacturing a semiconductor device is provided. The method includes forming a redistribution layer (RDL) over a semiconductor die. A portion of the RDL contacts a die pad of the semiconductor die. A metal layer is formed on a top surface and sidewalls of the RDL and configured to encase the RDL. A non-conductive layer is formed over the metal layer and underlying RDL. An opening in the non-conductive layer is formed exposing a portion of the metal layer formed on the RDL. An under-bump metallization (UBM) is formed in the opening and conductively connected to the die pad by way of the metal layer and RDL.
    Type: Application
    Filed: September 28, 2022
    Publication date: March 28, 2024
    Inventors: Kuan-Hsiang Mao, Yufu Liu, Wen Hung Huang, Tsung Nan Lo
  • Patent number: 11935753
    Abstract: A method for forming a packaged integrated circuit device includes providing a semiconductor wafer having a plurality of integrated circuit devices, each integrated circuit device extending into the semiconductor wafer to a first depth, and grinding a backside of the silicon wafer to no more than the first depth. The method further includes forming a backside cut between the integrated circuit devices. The backside cut extends to within the first depth, but the backside cut does not extend completely through the semiconductor wafer. The backside cut exposes a plurality of edges of each of the integrated circuit devices. The method further includes depositing, on the backside of the wafer, a metallization layer on a bottom surface of the integrated circuit devices and on the edges.
    Type: Grant
    Filed: December 9, 2021
    Date of Patent: March 19, 2024
    Assignee: NXP B.V
    Inventors: Kuan-Hsiang Mao, Wen Hung Huang, Che Ming Fang, Yufu Liu
  • Publication number: 20240030173
    Abstract: An IC package includes one or more microelectronic devices, a plurality of package bumps disposed at a first side, and a metal structure electrically connecting at least a first device contact pad of a first microelectronic device and at least a first package bump of the plurality of package bumps. The metal structure includes an RDL trace extending between a first region aligned with the first device contact pad and a second region aligned with the first package bump, wherein the first package bump is mechanically and electrically connected directly to the second region of the RDL trace. The metal structure further includes a first via extending between the first region of the RDL trace and the first device contact pad and further includes a set of one or more support studs extending from the second region to a support surface facing the first side.
    Type: Application
    Filed: July 19, 2022
    Publication date: January 25, 2024
    Inventors: Che Ming Fang, Kuan-Hsiang Mao, Yufu Liu, Wen Hung Huang
  • Publication number: 20240014123
    Abstract: A method of forming a semiconductor device is provided. The method includes placing a semiconductor die and a leadframe on a carrier substrate. The semiconductor die includes a plurality of bond pads and the leadframe includes a plurality of leads. A first lead of the plurality of leads has a proximal end affixed to a first bond pad of the plurality of bond pads and a distal end placed on the carrier substrate. At least a portion of the semiconductor die and the leadframe is encapsulated with an encapsulant. The carrier substrate is separated from a first major side of the encapsulated semiconductor die and leadframe exposing a distal end portion of the first lead. A package substrate is applied on the first major side.
    Type: Application
    Filed: July 6, 2022
    Publication date: January 11, 2024
    Inventors: Kuan-Hsiang Mao, Chin Teck Siong, Pey Fang Hiew, Wen Yuan Chuang, Sharon Huey Lin Tay, Wen Hung Huang
  • Publication number: 20230378107
    Abstract: A semiconductor device package includes a semiconductor device and an electrically conductive pad disposed in contact with a surface of the semiconductor device. The semiconductor device package further includes a redistribution layer (RDL) formed over the electrically conductive pad and the surface of the semiconductor device, and an electrical connector disposed over and electrically coupled to the RDL. The RDL includes a first passivation layer disposed over a surface of the semiconductor device and the electrically conductive pad, and further includes an RDL trace. The RDL trace includes a first portion in contact with the electrically conductive pad, a second portion in contact with one of the electrical connector or an underlying metallization layer in contact with the electrical connector, and a third portion having a non-planar and undulating configuration relative to the surface of the semiconductor device.
    Type: Application
    Filed: May 19, 2022
    Publication date: November 23, 2023
    Inventors: Kuan-Hsiang Mao, Yufu Liu, Tsung Nan Lo, Wen Hung Huang
  • Publication number: 20230369168
    Abstract: An integrated circuit (IC) package includes one or more microelectronic devices disposed between a first side and an opposing second side of the IC package and further includes a metal frame structure comprising a metal layer disposed at the second side, an embedded ground plane (EGP) structure encircling the one or more microelectronic devices, and a set of stacked conductive structures extending from the EGP structure to the first side through a set of one or more redistribution layers at the first side. The IC package further can include an array of package contacts disposed at the first side and an encapsulant layer encapsulating the one or more microelectronic devices in a volume defined by an inner sidewall of the EGP structure.
    Type: Application
    Filed: May 10, 2022
    Publication date: November 16, 2023
    Inventors: Kuan-Hsiang Mao, Chin Teck Siong, Wen Hung Huang
  • Publication number: 20230343749
    Abstract: Semiconductor packages with embedded wiring on re-distributed bumps are described. In an illustrative, non-limiting embodiment, a semiconductor package may include an integrated circuit (IC) having a plurality of pads and a re-distribution layer (RDL) coupled to the IC without any substrate or lead frame therebetween, where the RDL comprises a plurality of terminals, and where one or more of the plurality of pads are wire bonded to a corresponding one or more of the plurality of terminals.
    Type: Application
    Filed: April 25, 2022
    Publication date: October 26, 2023
    Applicant: NXP B.V.
    Inventors: Kuan-Hsiang Mao, Norazham Mohd Sukemi, Chin Teck Siong, Tsung Nan Lo, Wen Hung Huang
  • Publication number: 20230326821
    Abstract: Five-side mold protection for semiconductor packages is described. In an illustrative, non-limiting embodiment, a semiconductor package may include: a substrate comprising a top surface, a bottom surface, and four sidewalls; an electrical component comprising a backside and a frontside, where the frontside of the electrical component is coupled to the top surface of the substrate; and a molding compound, where the molding compound encapsulates the backside of the electrical component and the four sidewalls of the substrate.
    Type: Application
    Filed: April 8, 2022
    Publication date: October 12, 2023
    Applicant: NXP B.V.
    Inventors: Kuan-Hsiang Mao, Wen Yuan Chuang, Wen Hung Huang
  • Publication number: 20230187211
    Abstract: A method for forming a packaged integrated circuit device includes providing a semiconductor wafer having a plurality of integrated circuit devices, each integrated circuit device extending into the semiconductor wafer to a first depth, and grinding a backside of the silicon wafer to no more than the first depth. The method further includes forming a backside cut between the integrated circuit devices. The backside cut extends to within the first depth, but the backside cut does not extend completely through the semiconductor wafer. The backside cut exposes a plurality of edges of each of the integrated circuit devices. The method further includes depositing, on the backside of the wafer, a metallization layer on a bottom surface of the integrated circuit devices and on the edges.
    Type: Application
    Filed: December 9, 2021
    Publication date: June 15, 2023
    Inventors: Kuan-Hsiang Mao, Wen Hung Huang, Che Ming Fang, Yufu Liu
  • Publication number: 20230187299
    Abstract: A method for manufacturing a packaged integrated circuit device includes providing a semiconductor wafer having a plurality of integrated circuit devices. Each integrated circuit device extends into the semiconductor wafer to a first depth. Prior to singulation of the integrated circuit devices on the semiconductor wafer, the method further includes forming a cut between the integrated circuit devices. The cut extends to at least the first depth, but does not extend completely through the semiconductor wafer. The cut exposes a plurality of edges of each of the integrated circuit devices. The method further includes depositing, on each integrated circuit device, a passivation layer on a top surface and on the edges.
    Type: Application
    Filed: December 9, 2021
    Publication date: June 15, 2023
    Inventors: Kuan-Hsiang Mao, Che Ming Fang, Yufu Liu, Wen Hung Huang
  • Patent number: 11640947
    Abstract: A packaging semiconductor device, such as a fan-out Wafer-Level Packaging (FOWLP) device, is fabricated by providing a semiconductor device (20) having conductive patterns (22) disposed on a first surface and then forming, on the conductive patterns, photoresist islands (24) having a first predetermined shape defined by a first critical width dimension and a minimum height dimension so that a subsequently-formed dielectric polymer layer (26) surrounds but does not cover each photoresist island (24), thereby allowing each photoresist island to be selectively removed from the one or more conductive patterns to form one or more via openings (28) in the dielectric polymer layer such that each via opening has a second predetermined shape which matches at least part of the first predetermined shape of the photoresist islands.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: May 2, 2023
    Assignee: NXP B.V.
    Inventors: Kuan-Hsiang Mao, Wen Hung Huang, Che Ming Fang, Yufu Liu
  • Publication number: 20230014470
    Abstract: Packaged semiconductor devices are disclosed, comprising: a semiconductor die having a top major surface with a plurality of contact pads thereon, and four sides, wherein the sides are stepped such that a lower portion of each side extends laterally beyond a respective upper portion; encapsulating material encapsulating the top major surface and the upper portion of each of the sides wherein the semiconductor die is exposed at the lower portion of each of the sides; a contact-redistribution structure on the encapsulating material over the top major surface of the semiconductor die; a plurality of metallic studs extending through the encapsulating material, and providing electrical contact between the contact pads and the contact-redistribution structure. Corresponding methods are also disclosed.
    Type: Application
    Filed: July 16, 2021
    Publication date: January 19, 2023
    Inventors: Kuan-Hsiang Mao, Wen Hung Huang, Yufu Liu
  • Publication number: 20220384372
    Abstract: A packaging semiconductor device, such as a fan-out Wafer-Level Packaging (FOWLP) device, is fabricated by providing a semiconductor device (20) having conductive patterns (22) disposed on a first surface and then forming, on the conductive patterns, photoresist islands (24) having a first predetermined shape defined by a first critical width dimension and a minimum height dimension so that a subsequently-formed dielectric polymer layer (26) surrounds but does not cover each photoresist island (24), thereby allowing each photoresist island to be selectively removed from the one or more conductive patterns to form one or more via openings (28) in the dielectric polymer layer such that each via opening has a second predetermined shape which matches at least part of the first predetermined shape of the photoresist islands.
    Type: Application
    Filed: May 28, 2021
    Publication date: December 1, 2022
    Applicant: NXP B.V.
    Inventors: Kuan-Hsiang Mao, Wen Hung Huang, Che Ming Fang, Yufu Liu