Patent ID: 8403202

Claim:
A method for soldering a surface mounting LED to a circuit board, comprising following steps: providing a circuit board, which comprises a first electrode and second electrode electrically insulated from each other; providing a solder-applying pattern on the first electrode and the second electrode, the solder-applying pattern defining a plurality of first holes above the first electrode and a plurality of second holes above the second electrode, the first holes and the second holes passing through the solder-applying pattern to expose parts of the first electrode and parts of the second electrode respectively; filling solder pastes into the first holes and the second holes; separating the solder-applying pattern from the circuit board, the solder paste filled in the first holes forming a plurality of first solder poles, the solder paste filled in the second holes forming a plurality of second solder poles; providing an LED comprising a positive electrode on the first solder poles and a negative electrode on the second solder poles; and heating the first solder poles and the second solder poles to form a first solder ball and a second solder ball respectively after the heated first and second solder poles are cooled, the first solder ball electrically and mechanically connecting the positive electrode of the LED with the first electrode, the second solder ball electrically and mechanically connecting the negative electrode of the LED with the second electrode.