Abstract: A backlight module includes a light-emitting element and a light guide plate. The light guide plate includes a first surface disposed opposite to the light-emitting element, a second surface and the third surface connected to opposite sides of the first surface. The second surface is provided with a plurality of light-scattering microstructures, and each of the light-scattering microstructures is provided with a body portion and an edge portion. The edge portion surrounds the body portion, and the body portion and the edge portion protrude from or are recessed into the second surface. The edge portion has a first height for protruding from the second surface, or a first depth for being recessed into the second surface, and the first height and the first depth range from 0.2 ?m to 1.4 ?m.

Abstract: The present invention provides a backlight module, including a light guide plate assembly, a reverse prism sheet, and a first and a second light source modules. The light guide plate assembly includes a first and an upper second light guides. The light guide plates respectively have a light incident and a light exiting surfaces, and a bottom surface with a plurality of light guide structures formed thereon. The light exiting and bottom surfaces are located on opposite sides of the light guide plate, and respectively connected to the light incident surface. The two light incident surfaces are respectively located on opposite sides of the light guide plate assembly. The reverse prism sheet is disposed on the second light guide plate with prismatic structures facing the same. The light source modules are respectively disposed aside the two incident surfaces, and are adapted to be activated alternatively at a frequency.

Abstract: The present invention provides a backlight module, including a light guide plate assembly, a reverse prism sheet, and a first and a second light source modules. The light guide plate assembly includes a first and an upper second light guides. The light guide plates respectively have a light incident and a light exiting surfaces, and a bottom surface with a plurality of light guide structures formed thereon. The light exiting and bottom surfaces are located on opposite sides of the light guide plate, and respectively connected to the light incident surface. The two light incident surfaces are respectively located on opposite sides of the light guide plate assembly. The reverse prism sheet is disposed on the second light guide plate with prismatic structures facing the same. The light source modules are respectively disposed aside the two incident surfaces, and are adapted to be activated alternatively at a frequency.

Abstract: A backlight module includes a light-emitting element and a light guide plate. The light guide plate includes a first surface disposed opposite to the light-emitting element, a second surface and the third surface connected to opposite sides of the first surface. The second surface is provided with a plurality of light-scattering microstructures, and each of the light-scattering microstructures is provided with a body portion and an edge portion. The edge portion surrounds the body portion, and the body portion and the edge portion protrude from or are recessed into the second surface. The edge portion has a first height for protruding from the second surface, or a first depth for being recessed into the second surface, and the first height and the first depth range from 0.2 ?m to 1.4 ?m.