The present invention relates to a light guide plate pattern forming apparatus for forming a pattern of a light guide plate, and more particularly, to form a pattern of the light guide plate by using fine diamond powder having irregular crystals, thereby increasing the diffuse reflectance of light incident into the light guide plate, thereby improving illuminance. The present invention relates to a milky way pattern forming apparatus for a light guide plate using diamond which can be made. The present invention is a light guide plate pattern generating device, characterized in that it comprises a pattern forming unit including a pattern tool formed with a plurality of milky way pattern forming parts to form a milky way pattern having an irregular pattern surface on the light guide plate by the diamond powder is bonded to the end It is done.
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