Patent ID: 9194997
Filing Date: 2015-11-24
Classification: G02B,H04N

Abstract:
1. A backlight unit comprising: a first light guide plate; a first light source that is disposed at one side of the first light guide plate and emits light to the first light guide plate; a second light guide plate that is disposed on the first light guide plate; a second light source that is disposed at one side of the second light guide plate and emits light to the second light guide plate; a plurality of first diffusion units that are aligned in the first light guide plate to be spaced apart from each other in a widthwise direction of the first light guide plate; a first region in that the first diffusion units are not aligned between the plurality of first diffusion units; a plurality of second diffusion units that are aligned in the second light guide plate alternately with the first diffusion units in a widthwise direction of the second light guide plate; a second region in that the second diffusion units are not aligned between the plurality of second diffusion units; and a lenticular lens array that is disposed on the second light guide plate, wherein a sum of a pitch of one of the first diffusion units and a pitch of the second diffusion units is the same as a pitch of the lenticular lens array.