Patents by Inventor Ai Cheng CHAN

Ai Cheng CHAN 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
  • Patent number: 10854788
    Abstract: An optoelectronic component and a method for producing an optoelectronic component are disclosed. In an embodiment a method includes attaching a plurality of optoelectronic semiconductor chips on predetermined locations of an intermediate film, providing a cavity film with a plurality of separated openings, attaching the cavity film to the intermediate film such that each optoelectronic semiconductor chip is associated with a respective opening, wherein the cavity film is thicker than the optoelectronic semiconductor chips such that the cavity film exceeds the optoelectronic semiconductor chips in a direction away from the intermediate film, filling a casting material in each of the openings such that the optoelectronic semiconductor chips are casted with the casting material and removing the intermediate film.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: December 1, 2020
    Assignee: OSRAM OLED GMBH
    Inventors: Choo Kean Lim, Choon Keat Or, Choon Kim Lim, Ai Cheng Chan
  • Publication number: 20200135980
    Abstract: An optoelectronic component and a method for producing an optoelectronic component are disclosed. In an embodiment a method includes attaching a plurality of optoelectronic semiconductor chips on predetermined locations of an intermediate film, providing a cavity film with a plurality of separated openings, attaching the cavity film to the intermediate film such that each optoelectronic semiconductor chip is associated with a respective opening, wherein the cavity film is thicker than the optoelectronic semiconductor chips such that the cavity film exceeds the optoelectronic semiconductor chips in a direction away from the intermediate film, filling a casting material in each of the openings such that the optoelectronic semiconductor chips are casted with the casting material and removing the intermediate film.
    Type: Application
    Filed: July 6, 2017
    Publication date: April 30, 2020
    Applicant: OSRAM Opto Semiconductors GmbH
    Inventors: Choo Kean LIM, Choon Keat OR, Choon Kim LIM, Ai Cheng CHAN