Disclosed is an circuit board module for a display device having a rigid-flex circuit board structure which is capable of improving spatial efficiency of a mother board, and simplifying a structure of the mother board, a method for manufacturing the same, and a display device, wherein a rigid-flex printed circuit board, a rigid printed circuit board, and a flexible printed circuit cable are respectively manufactured on the different mother boards, separately, and then combined with one another, whereby it is possible to realize the more-improved spatial efficiency of the mother board in comparison to a case of manufacturing the rigid-flex printed circuit board, the rigid printed circuit board, and the flexible printed circuit cable on one mother board.