OPTICAL ASSEMBLY, BACKLIGHT UNIT HAVING THE SAME, AND DISPLAY APPARATUS THEREOF

摘要

The present invention provides an optical assembly, a backlight unit having the same, and a display apparatus thereof, and the optical assembly includes: a light emitting device; and a lens disposed above the light emitting device, and the lens has: a lower surface portion through which light emitted from the light emitting device travels inside; an upper surface portion that totally reflects at least some of the light traveling inside through the lower surface portion, downward to the side; and a side portion through which the light totally reflected from the upper surface portion is discharged to the outside.

主权项

1. A display unit, comprising:
a display panel; and a backlight unit disposed behind the display panel and including a plurality of light sources, each light source including a light emitting device and a lens disposed above the light emitting device, wherein the lens includes:
a lower surface portion;a light source receiving portion recessed upwardly from the lower surface portion, the light source receiving portion including:
a first recess portion which is upwardly recessed from a center of lower surface portion; anda second recess portion which is further upwardly recessed from a top surface of the first recess portion; a side surface portion extending upwardly from an edge of the lower surface portion; an upper surface portion formed at an upper end of the side surface portion and configured to allow light emitted from the light source to be reflected towards the side surface portion and refracted towards the display panel, wherein a height of an edge of the upper surface portion from the lower surface portion is greater than a height of a center of the upper surface portion from the lower surface portion, wherein the side surface portion is outwardly inclined from the lower surface portion to the upper surface portion, wherein a longitudinal section between the edge and the center of the upper surface portion has a convexly curved shape.