Patents by Inventor Long-Chi Tu

Long-Chi Tu 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).

  • Light-emitting device and manufacturing method thereof
    Patent number: 10804444
    Abstract: A light-emitting device including at least one light-emitting unit, a wavelength conversion adhesive layer, and a reflective protecting element is provided. The light-emitting unit has an upper surface and a lower surface opposite to each other. The light-emitting unit includes two electrode pads, and the two electrode pads are located on the lower surface. The wavelength conversion adhesive layer is disposed on the upper surface. The wavelength conversion adhesive layer includes a low-concentration fluorescent layer and a high-concentration fluorescent layer. The high-concentration fluorescent layer is located between the low-concentration fluorescent layer and the light-emitting unit. The width of the high-concentration fluorescent layer is WH. The width of the low-concentration fluorescent layer is WL. The width of the light-emitting unit is WE. The light-emitting device further satisfies the following inequalities: WE<WL, WH<WL and 0.8<WH/WE?1.2.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: October 13, 2020
    Assignee: Genesis Photonics Inc.
    Inventors: Cheng-Wei Hung, Long-Chi Tu, Jui-Fu Chang, Chun-Ming Tseng, Yun-Chu Chen
  • LIGHT-EMITTING DEVICE AND MANUFACTURING METHOD THEREOF
    Publication number: 20200035875
    Abstract: A light-emitting device including at least one light-emitting unit, a wavelength conversion adhesive layer, and a reflective protecting element is provided. The light-emitting unit has an upper surface and a lower surface opposite to each other. The light-emitting unit includes two electrode pads, and the two electrode pads are located on the lower surface. The wavelength conversion adhesive layer is disposed on the upper surface. The wavelength conversion adhesive layer includes a low-concentration fluorescent layer and a high-concentration fluorescent layer. The high-concentration fluorescent layer is located between the low-concentration fluorescent layer and the light-emitting unit. The width of the high-concentration fluorescent layer is WH. The width of the low-concentration fluorescent layer is WL. The width of the light-emitting unit is WE. The light-emitting device further satisfies the following inequalities: WE<WL, WH<WL and 0.8<WH/WE?1.2.
    Type: Application
    Filed: October 7, 2019
    Publication date: January 30, 2020
    Applicant: Genesis Photonics Inc.
    Inventors: Cheng-Wei Hung, Long-Chi Tu, Jui-Fu Chang, Chun-Ming Tseng, Yun-Chu Chen
  • Light emitting device and manufacturing method thereof
    Patent number: 10439111
    Abstract: A light-emitting device including at least one light-emitting unit, a wavelength conversion adhesive layer, and a reflective protecting element is provided. The light-emitting unit has an upper surface and a lower surface opposite to each other. The light-emitting unit includes two electrode pads, and the two electrode pads are located on the lower surface. The wavelength conversion adhesive layer is disposed on the upper surface. The wavelength conversion adhesive layer includes a low-concentration fluorescent layer and a high-concentration fluorescent layer. The high-concentration fluorescent layer is located between the low-concentration fluorescent layer and the light-emitting unit. The width of the high-concentration fluorescent layer is WH. The width of the low-concentration fluorescent layer is WL. The width of the light-emitting unit is WE. The light-emitting device further satisfies the following inequalities: WE<WL, WH<WL and 0.8<WH/WE?1.2.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: October 8, 2019
    Assignee: Genesis Photonics Inc.
    Inventors: Cheng-Wei Hung, Long-Chi Tu, Jui-Fu Chang, Chun-Ming Tseng, Yun-Chu Chen
  • LIGHT EMITTING DEVICE AND MANUFACTURING METHOD THEREOF
    Publication number: 20180123001
    Abstract: A light-emitting device including at least one light-emitting unit, a wavelength conversion adhesive layer, and a reflective protecting element is provided. The light-emitting unit has an upper surface and a lower surface opposite to each other. The light-emitting unit includes two electrode pads, and the two electrode pads are located on the lower surface. The wavelength conversion adhesive layer is disposed on the upper surface. The wavelength conversion adhesive layer includes a low-concentration fluorescent layer and a high-concentration fluorescent layer. The high-concentration fluorescent layer is located between the low-concentration fluorescent layer and the light-emitting unit. The width of the high-concentration fluorescent layer is WH. The width of the low-concentration fluorescent layer is WL. The width of the light-emitting unit is WE. The light-emitting device further satisfies the following inequalities: WE<WL, WH<WL and 0.8<WH/WE?1.2.
    Type: Application
    Filed: October 19, 2017
    Publication date: May 3, 2018
    Applicant: Genesis Photonics Inc.
    Inventors: Cheng-Wei Hung, Long-Chi Tu, Jui-Fu Chang, Chun-Ming Tseng, Yun-Chu Chen