2 the light guiding plate 3 the display panel 4 the optical sheet 5 the reflection sheet 6 and the middle frame 7 are supported by a front frame 9 having an opening further the light source 2 is provided only in one side surface 3 a of the light guiding plate 3 in fig1 but the invention is not limited thereto for example the light source and the light source substrate may be provided in two or more side surfaces of the light guiding plate an example of the light source 2 includes a point light source such as an led or a laser diode in the case of using the point light source the point light source is used while being mounted to the light source substrate furthermore the light guiding plate 3 is formed of glass or resin such as polyethylene terephthalate pet acrylate pmma polycarbonate pc or cyclo olefin the facing light emission surface 3 c of the light guiding plate 3 is provided with a light scattering portion not shown which guides the light to the light emission surface 3 b by scattering the propagation direction of the light the light scattering portion functions as a means for extracting the light from the light guiding plate 3 by scattering the total reflection conditions of the light propagated to the inside of the light guiding plate specifically an example of the scattering means includes a method of printing a dot pattern on the facing light emission surface 3 c of the light guiding plate 3 a method of making the facing light emission surface 3 c a rough surface or a method of forming.