Patents by Inventor Yu-Chuan Ku

Yu-Chuan Ku 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: 12283439
    Abstract: An illuminated keyswitch structure includes a base plate, a keycap, and a light-emitting die package. The light-emitting die package is disposed to illuminate the keycap through the base plate. The light-emitting die package comprises a warm color temperature light-emitting die and a cold color temperature light-emitting die, and the light-emitting die package extends along an arrangement direction. Each of the two light-emitting dies has a short side arranged adjacent to each other, with a long side of each of the two light-emitting dies facing a same direction and configured proximate to each other. A gap between the two adjacent short sides of the two light-emitting dies is not greater than either one of the two adjacent short sides of the two light-emitting dies.
    Type: Grant
    Filed: September 5, 2023
    Date of Patent: April 22, 2025
    Assignees: DARFON ELECTRONICS (HUAIAN) CO., LTD., DARFON ELECTRONICS CORP.
    Inventors: Shih-Yung Ku, Wen-Ming Hsu, Yu-Chuan Ku
  • Patent number: 12230459
    Abstract: An illuminated keyswitch structure includes a base plate, a keycap, and a light-emitting die package. The keycap is movably disposed above the base plate in a vertical direction. The light-emitting die package is disposed under the keycap and includes a plurality of light-emitting dies. The plurality of light-emitting dies are monochromatic light-emitting dies. Therein, among the plurality of light-emitting dies, three light-emitting dies that are adjacently arranged in an arrangement direction perpendicular to the vertical direction emit light of three different colors. The arrangement direction is respectively parallel to along side of each of the three adjacent light-emitting dies.
    Type: Grant
    Filed: April 20, 2023
    Date of Patent: February 18, 2025
    Assignees: DARFON ELECTRONICS (HUAIAN) CO., LTD., DARFON ELECTRONICS CORP.
    Inventors: Shih-Yung Ku, Wen-Ming Hsu, Yu-Chuan Ku
  • Patent number: 12198873
    Abstract: The invention discloses an illuminated keyswitch structure, which includes a base plate, a keycap, and a plurality of light-emitting dies. The base plate has a through hole. The keycap is movably disposed above the base plate in a vertical direction. The light-emitting dies are disposed under the keycap. The light-emitting dies are not higher than the base plate. The light-emitting dies are located within a projection of the through hole in the vertical direction. At least two of the light-emitting dies are arranged parallel to an hole edge of the through hole. In the illuminated keyswitch structure of the invention, distances from the light-emitting dies that are arranged parallel to the hole edge to the hole edge are close to each other, and light of different colors emitted by said light-emitting dies travels through the hole edge at similar distances, thereby suppressing uneven light mixing and color deviation.
    Type: Grant
    Filed: May 26, 2022
    Date of Patent: January 14, 2025
    Assignees: DARFON ELECTRONICS (HUAIAN) CO., LTD., DARFON ELECTRONICS CORP.
    Inventors: Yu-Chuan Ku, Wen-Ming Hsu, Yuming Huang
  • Publication number: 20240203671
    Abstract: The invention discloses an illuminated keyswitch structure, which includes a base plate, a keycap, and a plurality of light-emitting dies. The base plate has a through hole. The keycap is movably disposed above the base plate in a vertical direction. The light-emitting dies are disposed under the keycap. The light-emitting dies are not higher than the base plate. The light-emitting dies are located within a projection of the through hole in the vertical direction. At least two of the light-emitting dies are arranged parallel to an hole edge of the through hole. In the illuminated keyswitch structure of the invention, distances from the light-emitting dies that are arranged parallel to the hole edge to the hole edge are close to each other, and light of different colors emitted by said light-emitting dies travels through the hole edge at similar distances, thereby suppressing uneven light mixing and color deviation.
    Type: Application
    Filed: May 26, 2022
    Publication date: June 20, 2024
    Applicants: DARFON ELECTRONICS (HUAIAN) CO., LTD., DARFON ELECTRONICS CORP.
    Inventors: Yu-Chuan Ku, Wen-Ming Hsu, Yuming HUANG