Method for connecting stacked circuit boards

A method for connecting stacked circuit boards, comprising:

• providing a connecting structure, wherein the connecting structure is a bendable and flexible circuit board;
• providing a first circuit board and a plurality of supporting posts, and dispersedly fixing each of the supporting posts to a side surface of the first circuit board;
• providing a second circuit board, and respectively fixing two peripheral portions of the connecting structure to the side surface of the first circuit board and a surface of the second circuit board, wherein the peripheral portions of the connecting structure are respectively near two opposite ends of the connecting structure;
• bending the connecting structure to flip the second circuit board super-positioned above the first circuit board, wherein the first circuit board and the second circuit board extend from the bent connecting structure toward a side of the bent connecting structure, the supporting posts is located between the first circuit board and the second circuit board;
• and
• connecting the second circuit board to a free end of each of the supporting posts, wherein two opposite ends of each of the supporting posts are respectively in contact with the side surface of the first circuit board connecting the connecting structure and the surface of the second circuit board connecting the connecting structure.