Patents by Inventor Yao Jung Chang

Yao Jung Chang 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: 20240038683
    Abstract: A method of manufacturing a semiconductor device is provided. The method includes placing a package substrate on a carrier substrate, forming a frame on the package substrate, and affixing an active side of a semiconductor die on the package substrate. The semiconductor die together with the frame and the package substrate form a cavity between the semiconductor die and the package substrate. At least a portion of the semiconductor die and the package substrate are encapsulated with an encapsulant. The frame is configured to prevent the encapsulant from entering the cavity.
    Type: Application
    Filed: July 28, 2022
    Publication date: February 1, 2024
    Inventors: Tzu Ya Fang, Yen-Chih Lin, Jian Nian Chen, Moly Lee, Yi Xiu Xie, Vanessa Wyn Jean Tan, Yao Jung Chang, Yi-Hsuan Tsai, Xiu Hong Shen, Kuan Lin Huang
  • Publication number: 20220399234
    Abstract: A method of semiconductor die singulation is provided. The method includes forming a first trench along a singulation lane of a semiconductor wafer. A second trench is formed extending from a bottom of the first trench. A portion of the semiconductor wafer remains between a bottom of the second trench and a backside of the semiconductor wafer. A cut is formed by way of a laser to singulate die of the semiconductor wafer. The cut extends through the portion of the semiconductor wafer remaining between the bottom of the second trench and the backside of the semiconductor wafer.
    Type: Application
    Filed: June 15, 2021
    Publication date: December 15, 2022
    Inventors: WeiCheng Chuang, PaoTung Pan, Che Lun Cheng, Yao Jung Chang, Yu-Wen Chu, Chun-Hui Lee, Che-Kai Hsu, Kuan Lin Huang
  • Patent number: 10607861
    Abstract: A method for wafer dicing and removing separated integrated circuit (IC) dies from a carrier substrate includes mounting a wafer on a substrate using an adhesive layer, laser scribing the adhesive layer to create defect regions in the adhesive layer, and performing a breaking step to separate the laser-scribed adhesive layer into separated adhesive portions corresponding to the IC dies. For a stealth-dicing (SD) technique, defect regions also are created in the wafer using a laser and the breaking step is an expansion step that simultaneously separates the dies and corresponding portions of adhesive. For a dice-before-grind (DBG) technique, the dies are separated by backside grinding before the breaking step. Efficient adhesive-layer separation is achieved with reduced backside chipping associated with conventional blade dicing.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: March 31, 2020
    Assignee: NXP B.V.
    Inventors: Siriluck Wongratanaporngoorn, Yao Jung Chang, Ekapong Tangpattanasaeree, Paradee Jitrungruang, Pitak Seantumpol
  • Publication number: 20190164784
    Abstract: A method for wafer dicing and removing separated integrated circuit (IC) dies from a carrier substrate includes mounting a wafer on a substrate using an adhesive layer, laser scribing the adhesive layer to create defect regions in the adhesive layer, and performing a breaking step to separate the laser-scribed adhesive layer into separated adhesive portions corresponding to the IC dies. For a stealth-dicing (SD) technique, defect regions also are created in the wafer using a laser and the breaking step is an expansion step that simultaneously separates the dies and corresponding portions of adhesive. For a dice-before-grind (DBG) technique, the dies are separated by backside grinding before the breaking step. Efficient adhesive-layer separation is achieved with reduced backside chipping associated with conventional blade dicing.
    Type: Application
    Filed: November 28, 2017
    Publication date: May 30, 2019
    Inventors: Siriluck Wongratanaporngoorn, Yao Jung Chang, Ekapong Tangpattanasaeree, Paradee Jitrungruang, Pitak Seantumpol