Backlight unit and display device

摘要

A backlight unit (100) according to an embodiment includes: a plurality of optical assemblies (10) each including a light source (13) generating light, a light guide plate (15) having a first part (15b) through which light travels inside and a second part (15a) diffusing upward the light traveling inside through the first part; and a diffusion pattern (223) selectively disposed at the portions corresponding to interfaces between the light guide plates on the optical assemblies.