ENGRAVING METHOD AND MANUFACTURING METHOD OF LIGHT GUIDE PLATE USING LASER

摘要

PURPOSE: A light guide plate engraving method and a light guide plate processing method using a laser are provided to improve the whole brightness of a light guide plate and obtain uniform brightness on the display surface by projecting a laser beam to form an optical pattern on the light guide plate with a lenticular lens array. CONSTITUTION: A light guide plate engraving method using a laser comprises the steps of: arranging a light guide plate(10) with a lenticular lens array(20) in which ridges and troughs are arranged in a first direction on one side and forming separated linear intaglio patterns by projecting a laser beam onto the lenticular lens array in a second direction crossing the first direction. The laser beam used for engraving has a depth of focus greater than the height difference between the ridge and trough of a lenticular lens.