A flat panel display module is introduced herein, which principally includes an upper bezel, a liquid crystal panel, a frame, an optical film set and a printed circuit board assembly (PCBA), wherein various types electrical components mounted on the PCBA are capable of being completely or mostly accommodated within a caved structure constructed within the inside of the flat panel display module so as to reduce a thickness of the whole flat panel display module. Simultaneously, a better structural strength for the whole flat panel display module can be achieved therefore by closely stacking up the above-mentioned elements of the whole flat panel display module.