Circuit board and method of fabricating the same

A method of fabricating a circuit board, comprising:

• providing a patterned metal board, wherein the patterned metal board comprises a patterned circuit having at least a pad;
• forming a dielectric layer on the patterned metal board to cover the patterned circuit;
• performing a processing treatment on a surface of the patterned metal board in which the surface is opposite to the patterned circuit, such that at least a conductive joint column disposed on the pad and a circuit layer having the patterned circuit are formed;
• and
• forming a solder mask layer on the dielectric layer to cover the circuit layer, such that the solder mask layer is in contact with the conductive joint column, the conductive joint column passes through the solder mask layer, and a height of the conductive joint column exceeds a thickness of the solder mask layer.