The Hong Kong University of Science and Technology

Rong Zhang

Shi-Wei Lee

Shuk Fan Siu

Wai Fong Lai

Wai Lam Cheng

Wing Shan Kwong

Kin Ho Poon

A wafer having a plurality of light-emitting diode (LED) submounts and a method for fabricating an LED submount are provided. Each of the plurality of LED submounts of the wafer includes: a substrate (), including through vias (); an LED die () mounted in a cavity () on a first side of the substrate () and connected to the through vias (); a redistribution layer () attached to a second side of the substrate () connected to the LED die () through the through vias (). The method includes providing a wafer as a substrate (); providing a cavity () in the substrate () on a first side of the substrate (); providing through vias () in the substrate (), providing a redistribution layer () on the second side of the substrate (), and mounting an LED () in the cavity (), wherein the LED die () is connected to the redistribution layer () through the through vias ().

Submount with cavities and through vias for LED packaging

A light tube for producing light, which may be used in the light fittings, desk lamps, vehicle lights etc. The light tube comprises a plurality of segments arranged end to end along the end of the light tube. Each segment has a transparent or translucent rodhaving two ends, a head spreaderby at least one of said ends and an LEDmounted to each heat spreaderfor directing light laterally into the rod. The heat spreadersare mounted to a metal jacketfor dissipating heat. The light tube further comprises one or more reflectorsfor reflecting light out of the light tube.

Light tube

Growing community of inventors

Hong Kong, China

Rong Zhang