Patents by Inventor Chia-Hang Chang

Chia-Hang 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: 20240145389
    Abstract: A semiconductor chip includes a first intellectual property block. There are a second intellectual property block and a third intellectual property block around the first intellectual property block. There is a multiple metal layer stack over the first intellectual property block, the second intellectual property block, and the third intellectual property block. An interconnect structure is situated in the upper portion of the multiple metal layer stack. The interconnect structure is configured for connecting the first intellectual property block and the second intellectual property block. In addition, at least a part of the interconnect structure extends across and over the third intellectual property block.
    Type: Application
    Filed: July 28, 2023
    Publication date: May 2, 2024
    Inventors: Li-Chiu WENG, Yew Teck TIEO, Ming-Hsuan WANG, Chia-Cheng CHEN, Wei-Yi CHANG, Jen-Hang YANG, Chien-Hsiung HSU
  • Publication number: 20240103593
    Abstract: A power adapter can include a power input node, a communication channel node, an output node, a low-pass filter, a modulator, and a high-pass filter. The low-pass filter can include a low-pass input node coupled to the power input node and a low-pass output node coupled to the output node. The modulator can include a modulator input node coupled to the communication channel node and a modulator output node. The modulator can be configured to modulate data received from the communication channel node onto a signal having a higher frequency than a data-carrying signal carrying the data received from the communication channel node and output the modulated data to a high-pass input node of a high-pass filter. The high-pass filter can include the high-pass input node coupled to the modulator output node and a high-pass output node coupled to the output node.
    Type: Application
    Filed: March 3, 2021
    Publication date: March 28, 2024
    Inventors: Chia-Hang Yeh, Yuan-Jen Chang
  • Patent number: 10816326
    Abstract: A polarization maintaining fiber array includes a substrate, a cover, and at least two polarization maintaining optical fibers. The substrate includes at least two main grooves, a first additional groove, and a second additional groove, wherein the main grooves are positioned between the first additional groove and the second additional groove. The fiber array includes at least two polarization maintaining optical fibers positioned in the at least two main grooves, a first dummy fiber positioned in the first additional groove, and a second dummy fiber positioned in the second additional groove. The cover is positioned such that it contacts the polarization maintaining optical fibers, the first dummy fiber, and the second dummy fiber.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: October 27, 2020
    Assignee: Alliance Fiber Optic Products, Inc.
    Inventors: Chia-Hang Chang, Ximao Feng, Wen-Lung Kuang, Andy Fenglei Zhou
  • Publication number: 20200096324
    Abstract: A polarization maintaining fiber array includes a substrate, a cover, and at least two polarization maintaining optical fibers. The substrate includes at least two main grooves, a first additional groove, and a second additional groove, wherein the main grooves are positioned between the first additional groove and the second additional groove. The fiber array includes at least two polarization maintaining optical fibers positioned in the at least two main grooves, a first dummy fiber positioned in the first additional groove, and a second dummy fiber positioned in the second additional groove. The cover is positioned such that it contacts the polarization maintaining optical fibers, the first dummy fiber, and the second dummy fiber.
    Type: Application
    Filed: September 4, 2019
    Publication date: March 26, 2020
    Inventors: Chia-Hang Chang, Ximao Feng, Wen-Lung Kuang, Andy Fenglei Zhou
  • Patent number: 9748200
    Abstract: A manufacturing method of a wafer level package structure includes the following steps. A chip is disposed on a supporting board, wherein the chip includes an active surface and a back surface opposite to the active surface, and a plurality of pads on the active surface, and the back surface of the chip is adhered to the supporting board through a die attach film (DAF). A molding is disposed on the supporting board to perform a wafer level exposed die molding procedure on the chip, wherein the molding surrounds the chip, and the pads of the chip are exposed out of the molding. A redistribution layer (RDL) is formed on the active surface of the chip, wherein the RDL is electrically connected to the pads. The supporting board and the DAF are removed from the chip.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: August 29, 2017
    Assignee: Powertech Technology Inc.
    Inventor: Chia-Hang Chang
  • Publication number: 20170229425
    Abstract: A manufacturing method of a wafer level package structure includes the following steps. A chip is disposed on a supporting board, wherein the chip includes an active surface and a back surface opposite to the active surface, and a plurality of pads on the active surface, and the back surface of the chip is adhered to the supporting board through a die attach film (DAF). A molding is disposed on the supporting board to perform a wafer level exposed die molding procedure on the chip, wherein the molding surrounds the chip, and the pads of the chip are exposed out of the molding. A redistribution layer (RDL) is formed on the active surface of the chip, wherein the RDL is electrically connected to the pads. The supporting board and the DAF are removed from the chip.
    Type: Application
    Filed: November 10, 2016
    Publication date: August 10, 2017
    Applicant: Powertech Technology Inc.
    Inventor: Chia-Hang Chang