Plane-shaped lighting device and a display using such a device

A display device comprising:

• a plane-shaped lighting device having a light source which emits light rays at a plurality of colors and a light-directing plate that has light-takeoff bodies installed on a plane section thereof;
• a patterned display board that is placed on a first side of the plane section of the plane-shaped lighting device;
• and
• a reflection plate that is placed on a second side, opposite the first side, of the plane section,
• wherein:
• the patterned display board has light-transmitting sections for allowing light to pass therethrough and light-shielding sections for preventing light from passing therethrough;
• color filters, which selectively transmit light rays emitted from the light source based upon respective colors of light emission, are placed on the light-transmitting sections;
• and each of the light-shielding sections has a first side face that forms a reflective surface, the first side face that forms a reflective surface, the first side face being opposite to the light-directing plate, and a second side face that forms a scattering surface with a low reflectivity with respect to visible light rays, the second side face being opposite the first side face.