Patents by Inventor Truc Phuong Thi VU

Truc Phuong Thi VU 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).

  • Phosphor cap for LED die top and lateral surfaces
    Patent number: 9029879
    Abstract: A method for depositing a layer of phosphor-containing material on a plurality of LED dies includes disposing a template with a plurality of openings on an adhesive tape and disposing each of a plurality of LED dies in one of the plurality of openings of the template. The method also includes forming a patterned dry film photoresist layer over the template and the plurality of LED dies. The photoresist layer has a plurality of openings configured to expose a top surface and side surfaces of each of the LED dies. Next, a phosphor-containing material is disposed on the exposed top surface of each the LED dies. The method further includes removing the photoresist layer and the template.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: May 12, 2015
    Assignee: LedEngin, Inc.
    Inventors: Zequn Mei, Truc Phuong Thi Vu, Xiantao Yan
  • PHOSPHOR CAP FOR LED DIE TOP AND LATERAL SURFACES
    Publication number: 20140167075
    Abstract: A method for depositing a layer of phosphor-containing material on a plurality of LED dies includes disposing a template with a plurality of openings on an adhesive tape and disposing each of a plurality of LED dies in one of the plurality of openings of the template. The method also includes forming a patterned dry film photoresist layer over the template and the plurality of LED dies. The photoresist layer has a plurality of openings configured to expose a top surface and side surfaces of each of the LED dies. Next, a phosphor-containing material is disposed on the exposed top surface of each the LED dies. The method further includes removing the photoresist layer and the template.
    Type: Application
    Filed: December 13, 2012
    Publication date: June 19, 2014
    Applicant: LedEngin, Inc.
    Inventors: Zequn MEI, Truc Phuong Thi VU, Xiantao YAN