Patents by Inventor Xiao Fen Hoo

Xiao Fen Hoo 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: 11990574
    Abstract: In an embodiment, a method for producing optoelectronic semiconductor devices includes applying a temporal spacer to protect a light-exit face of an optoelectronic semiconductor chip by applying a photoresist onto a first carrier, subsequently developing the photoresist in places thereby forming the temporal spacer and subsequently mounting the optoelectronic semiconductor chip onto a side of the temporal spacer facing away from the first carrier, forming a reflector in a lateral direction directly around the optoelectronic semiconductor chip and around the temporal spacer, subsequently removing the temporal spacer so that the reflector extends beyond the light-exit face and applying an optical element onto the reflector so that a gap exists between the light-exit face and a light-entrance face of the optical element.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: May 21, 2024
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Choo Kean Lim, Xiao Fen Hoo, Wan Leng Lim, Ai Cheng Chan
  • Publication number: 20220165924
    Abstract: In an embodiment, a method for producing optoelectronic semiconductor devices includes applying a temporal spacer to protect a light-exit face of an optoelectronic semiconductor chip by applying a photoresist onto a first carrier, subsequently developing the photoresist in places thereby forming the temporal spacer and subsequently mounting the optoelectronic semiconductor chip onto a side of the temporal spacer facing away from the first carrier, forming a reflector in a lateral direction directly around the optoelectronic semiconductor chip and around the temporal spacer, subsequently removing the temporal spacer so that the reflector extends beyond the light-exit face and applying an optical element onto the reflector so that a gap exists between the light-exit face and a light-entrance face of the optical element.
    Type: Application
    Filed: March 8, 2019
    Publication date: May 26, 2022
    Inventors: Choo Kean Lim, Xiao Fen Hoo, Wan Leng Lim, Ai Cheng Chan