Patents by Inventor Cheng Ta Kao

Cheng Ta Kao 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).

  • Micro LED display panel
    Patent number: 11366153
    Abstract: An epitaxial LED wafer is provided and chip process is processed such that each LED chip on the epitaxial wafer can be probed by an array of probe pin and results can be stored in a database. The epitaxial wafer is then diced on an expandable tape, and a display substrate is provided with driving circuits. The tape is expanded such that a pitch of LED chips on the tape is equal to a pitch of LED chips on display substrate. An array of drop pins will collectively and selectively drop LED chips, from the tape to the display substrate, with the same specification according to the probed results in the database.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: June 21, 2022
    Assignees: KKT HOLDINGS SYNDICATE
    Inventors: Tzu-Yi Kuo, Cheng Ta Kao, Chiyan Kuan, Yu-Kuang Tseng
  • Micro LED Display Panel
    Publication number: 20200225277
    Abstract: An epitaxial LED wafer is provided and chip process is processed such that each LED chip on the epitaxial wafer can be probed by an array of probe pin and results can be stored in a database. The epitaxial wafer is then diced on an expandable tape, and a display substrate is provided with driving circuits. The tape is expanded such that a pitch of LED chips on the tape is equal to a pitch of LED chips on display substrate. An array of drop pins will collectively and selectively drop LED chips, from the tape to the display substrate, with the same specification according to the probed results in the database.
    Type: Application
    Filed: January 15, 2020
    Publication date: July 16, 2020
    Inventors: Tzu-Yi Kuo, Cheng Ta Kao, Chiyan Kuan, Yu-Kuang Tseng