Portable display device

1. A portable display device comprising:

a display panel;

a backlight assembly having a light source for supplying light to the display panel and having a mold frame defining a periphery step platform extending along substantially an entire length of each of a plurality of edges of the mold frame for supporting the display panel; and

a bottom chassis supporting the mold frame, the bottom chassis defining a peripheral bent unit, wherein the peripheral bent unit continuously extends along each of a plurality of edges of the bottom chassis and surrounds an entirety of the peripheral step platform.

2. The portable display device as claimed in claim 1 , wherein the bottom chassis comprises Steel Use Stainless material.

3. The portable display device as claimed in claim 1 , wherein the bottom chassis has a thickness of between about 0.1 mm to 0.2 mm.

4. The portable display device as claimed in claim 1 , wherein the backlight assembly comprises:

light emitting diodes on a light emitting substrate supported by and fixed to the mold frame,

a light guide plate and a reflective plate between the mold frame and the bottom chassis; and

optical sheets between the display panel and the mold frame.

5. The portable display device as claimed in claim 1 , further comprising:

a second printed circuit board connected to an external drive circuit;

a first printed circuit board connected to the second printed circuit board, the first printed circuit board controlling the display panel and light source; and

a light-emitting display panel connected to the second printed circuit board for displaying images.

6. The portable display device as claimed in claim 1 , wherein the display panel is a liquid crystal display panel.