Patent ID: 8174832
Filing Date: 2012-05-08
Classification: H01L

Abstract:
1. A structure of a heat dissipation substrate for manufacturing a power LED, wherein the structure of the heat dissipation substrate comprises: a one-piece printed circuit board, on which a counterbore and metal lines are arranged; wherein, the counterbore is perpendicular to a surface of the printed circuit board and structured as a through hole and a blind hole communicating with each other, the through hole is smaller than the blind hole and both the through hole and the blind hole share a same direction of axis; a heat sink, having one-piece terraced structure formed by an upper terrace and a lower terrace, wherein a diameter of the upper terrace is close to an aperture of the through hole and a diameter of the lower terrace is close to an aperture of the blind hole; the upper terrace and the lower terrace share the same direction of axis and they are perpendicular to upper and lower surfaces of the printed circuit board; a height of the lower terrace is greater than or equal to a depth of the blind hole; wherein, the heat sink is in match with the counterbore and the heat sink is embedded in the counterbore to form a firm fit.