Abstract: A flat monitor. The flat monitor comprises a supporting mechanism. The supporting mechanism comprises a base having a receiving space, a first linking shaft having a first end connected to the base and a second end, and a second linking shaft having a third end and a fourth end. The third end is movably connected to the base and moves between a first position and a second position. The fourth end is pivoted to the second end of the first linking shaft so as to form a joint portion. A deceleration device is disposed between the first linking shaft and the base in order to slow the speed at which the joint portion moves between a supporting position and a receiving position.