| 摘要 |
<p>In a state wherein an optical lithography mask (12) having a plurality of openings, which have the same size and are regularly disposed at equal intervals with uniform density, is tilted and disposed on a substrate (10) having a resist layer (11) formed thereon, the resist layer is exposed through openings (13) of the optical lithography mask, and a molding die is formed using a plurality of fine structural bodies, which are obtained by developing the resist layer (11) and have tapered recessed shapes, respectively. Then, a light guide plate (40) having a plurality of fine structural bodies, which have tapered protruding shapes or tapered recessed shapes, respectively, is formed on a light outputting surface and/or the surface on the reverse side of the light outputting surface, by means of resin molding using the molding die. Each of the fine structural bodies of the light guide plate (40) has the tapered protruding shape or the tapered recessed shape, and the taper angle (?) is formed such that the angle increases within a range of approximately 0° to 60-80° toward the further side from the light incoming section.</p> |
