Patents by Inventor Chih-Tsang WEI

Chih-Tsang WEI 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).

  • Publication number: 20140361325
    Abstract: A package structure and methods for forming the package structure are provided. The package structure includes a lead frame having a chip bonding area and a shell surrounding a portion of the lead frame. The shell has an inner surface and an outer surface opposite to the inner surface. A cavity is recessed from the inner surface, and the chip bonding area is exposed from the cavity. The structure further includes a light emitting diode chip disposed over the chip bonding area and a first glue layer disposed in the cavity to cover the light emitting diode chip. A separation film is disposed on the first glue layer in the cavity and a second glue layer disposed on the separation film in the cavity. The second glue layer contains a wavelength conversion material and the first glue layer does not contain any wavelength conversion material.
    Type: Application
    Filed: May 15, 2014
    Publication date: December 11, 2014
    Applicant: LEXTAR ELECTRONICS CORPORATION
    Inventors: Tsung-Han LI, Lei-Hsing LIU, Chih-Tsang WEI