Patent ID: 8236687
Filing Date: 2012-08-07
Classification: H01L

Abstract:
1. A die-bonding method of a light emitting diode (LED), suitable for bonding the LED chip and a substrate, wherein the LED chip has a first metal thin film layer, the die-bonding method comprising: forming a second metal thin film layer on a surface of the substrate; forming a die-bonding material layer on the second metal thin film layer, wherein a melting point of the die-bonding material is lower than 110° C.; placing the LED chip on the die-bonding material layer with the first metal thin film layer contacting the die-bonding material; heating the die-bonding material layer at a liquid-solid reaction temperature for a pre-curing time, so as to respectively form a first intermetallic layer and a second intermetallic layer between the first metal thin film layer, the die-bonding material layer, and the second metal thin film layer; and heating the die-bonding material layer at a solid-solid reaction temperature for a curing time so as to perform a solid-solid reaction, wherein a melting point of the first intermetallic layer and the second intermetallic layer after the solid-solid reaction is higher than 200° C.