A connecting method includes: arranging the connection terminal such that a rear surface of a base portion in a flat plate shape of the connection terminal comes into contact with a front surface of the flexible substrate; with a rising portion of the connection terminal extending from the rear surface side of the base portion toward the base portion and a tip end bending portion of the connection terminal extending from a tip end of the rising portion in a direction inclined with respect to the rising portion, displacing the rising portion toward the base portion so that the tip end bending portion protrudes from a front surface of the base portion; and holding a part of the flexible substrate between a pressing portion formed at the rising portion and a pressed portion formed at the base portion, whereby the conductive portion of the flexible substrate is electrically connected to at least one of the pressing portion and the pressed portion.