The manufacturing method of the driving backplane includes following steps. A first flexible base is formed on a surface of a rigid substrate. At least one type of conductive pattern is formed on a surface of the first flexible base. At least one type of first via is provided in the rigid substrate. At least one type of second via is provided in the first flexible base by using the rigid substrate as a mask and a conductive pillar is formed in the at least one type of second via, so that the conductive pillars are connected to respective types of conductive pattern in one-to-one correspondence. At least one type of driving chip is correspondingly bonded to the conductive pillar formed in the at least one type of second via from a side of the first flexible base away from the at least one type of conductive pattern.