LIGHT DIFFUSER PLATE, SURFACE LIGHT SOURCE DEVICE, AND LIQUID CRYSTAL DISPLAY APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a light diffuser plate emitting light with high uniformity in luminance.

SOLUTION: The light diffuser plate 3 comprises a light transmitting plate having an irregular shape section 4 consisting of a plurality of triangular ridges having a triangular cross section disposed on at least one side thereof, wherein the irregular shape section 4 comprises first triangular ridges 6 of an isosceles triangular shape having a vertex angle (α) of 50-70° and second triangular ridges 8 of an isosceles triangular shape having a vertex angle (β) of 110-130°.

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