Patent ID: 7700386
Filing Date: 2010-04-20
Classification: F21K,H01L

Abstract:
1. A packaging method of LED of high cooling efficiency, including following steps in sequence of: a) preparing a copper substrate, on which a plurality of indentations are formed; b) coating an insulating layer on a surface of the copper substrate and on bottoms of the indentations; c) coating a set of metallic circuits on the insulating layer; d) coating an insulating lacquer on the surfaces of the set of metallic circuits, where there is no electric connection and no enclosure; e) coating a plurality of tin layers on a surface of the insulating layer of the indentations and on the surfaces of the set of metallic circuits, where there is no coating of the insulating lacquer; f) die bonding a set of light-emitting chips on the tin layers of the indentations; g) electrically connecting the set of light-emitting chips to the set of metallic circuits by means of a plurality of gold wires, making the set of the light-emitting chips electrically connected in series; h) forming a hollow ringed object on a surface of the copper substrate, the ringed object enclosing the set of light-emitting chips, the gold wires, and the set of metallic circuits therein; i) attaching a fluorescent glue to each of the surfaces of the tin layers of the set of light-emitting chips, the gold wires, and the set of metallic circuits, for forming a plurality of fluorescent layers; and j) filling an epoxy resin into an interior of the ringed object to enclose the fluorescent layers for forming an epoxy resin layer.