Patents by Inventor CHING-LUNG CHUANG

CHING-LUNG CHUANG 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).

  • Exposure system, circuit board, and method for making circuit board
    Patent number: 11647592
    Abstract: A system for effectively curing dry film ink throughout its thickness on circuit boards being made applies an exposure system, a circuit board, and a method for making the circuit board. The exposure system includes a plurality of mixed light sources with different wavelengths within a range of 365 nm to 440 nm, the mixed light sources can output at least three different wavelengths of light each of substantially a single wavelength and a fourth source of light able to output light of a spectrum of wavelengths, the ranges of light being between 365 nm and 440 nm.
    Type: Grant
    Filed: April 23, 2021
    Date of Patent: May 9, 2023
    Assignees: QING DING PRECISION ELECTRONICS (HUAIAN) CO., LTD, Avary Holding (Shenzhen) Co., Limited.
    Inventors: Ching-Lung Chuang, I-Hsin Chen, Li-Jen Chang
  • EXPOSURE SYSTEM, CIRCUIT BOARD, AND METHOD FOR MAKING CIRCUIT BOARD
    Publication number: 20220312599
    Abstract: A system for effectively curing dry film ink throughout its thickness on circuit boards being made applies an exposure system, a circuit board, and a method for making the circuit board. The exposure system includes a plurality of mixed light sources with different wavelengths within a range of 365 nm to 440 nm, the mixed light sources can output at least three different wavelengths of light each of substantially a single wavelength and a fourth source of light able to output light of a spectrum of wavelengths, the ranges of light being between 365 nm and 440 nm.
    Type: Application
    Filed: April 23, 2021
    Publication date: September 29, 2022
    Inventors: CHING-LUNG CHUANG, I-HSIN CHEN, LI-JEN CHANG