Patent ID: 8871534
Filing Date: 2014-10-28
Classification: F21K,H01L

Abstract:
1. A method for fabricating a light emitting diode (LED) light tube comprising: fabricating a heat dissipation base having a light emitting side formed with a recess, said heat dissipation base further having an interior portion defining a reception chamber therein; disposing at least one illumination unit and at least one bridging unit on a bottom surface of said recess, wherein said illumination unit is constituted by a plurality of LED dies and said bridging unit is constituted by a plurality of conductive elements; fixing a circuit unit on said light emitting side of said heat dissipation base in such a manner that said circuit is located adjacent to one side of said recess; applying wire-bond technique in order to connect said plurality of LED dies and said plurality of conductive elements electrically relative to one another; forming an optical layer over said plurality of LED dies; forming a protection layer on said optical layer; establishing electrical connection among said circuit unit, said plurality conductive elements and said plurality of LED dies; installing a power supply source within said reception chamber in said heat dissipation base; and disposing a diffusion shield over said heat dissipation base and two end caps respectively on two opposite ends of said heat dissipation base.