Abstract: There is provided a high luminous light conductive plate where concave dots formed on the surface of a resin sheet deflect light introduced from a light source to the interior of the light conductive plate so as to diffuse light into an extensive range with a roughened wall surface of the concave dots. An annular projection that flanges the peripheral end portion of each concave dot substantially increases the depth of the concave dots expanding an area contributing to the deflection of the concave dot. The concave dot formed on the surface of the resin sheet is formed by pressing a plurality of concave projections of a press die on the surface of the resin sheet through a cold process.

Abstract: There is provided a light conductive plate comprising: a resin sheet; and a plurality of concave dots formed on a surface of the resin sheet, wherein each concave dot in section includes a general formed portion in which to be continuously formed from an opening end portion of the concave dot toward a deep portion thereof, and a discontinuous formed portion that is fabricated at the deepest portion of the general formed portion.