OPTICAL SHEET FOR BACKLIGHT UNIT

摘要

The present invention relates to an optical sheet for a backlight unit containing an upper optical pattern layer and a lower optical pattern layer which have a tilting angle. The optical sheet for a backlight unit according to the present invention is configured to comprise: the upper optical pattern layer formed to dispose an optical pattern of a predetermined form at regular intervals on an upper part; and the lower optical pattern layer formed on the lower part of the upper optical pattern layer and formed to dispose the optical pattern of the predetermined form at regular intervals in the upper part, wherein a line on which the optical pattern of the upper optical pattern layer are arranged in a row is formed to be inclined in order to have the preset tilting angle with respect to a line on which the optical pattern of the lower optical pattern layer are arranged in a row.