Light emitting device array and backlight unit
A light emitting device array includes a substrate including a first region and a second region that is inclined with respect to the first region, a first light emitting device package arranged on the first region, and a second light emitting device package that is arranged on the second region and is inclined with respect to the first light emitting device package at an inclination angle between 90° and 160°.
1. A lighting device comprising:
a light guide plate; and
at least one light emitting device array arranged adjacent to a corner of the light guide plate that corresponds to an edge of one side surface of the light guide plate, the light emitting device array comprising:
a substrate includes a first region and a second region that are formed in a bent shape, and the first region of the substrate is inclined with respect to the second region of the substrate,
a first light emitting device package disposed on the first region,
a second light emitting device package that is disposed on the second region and is inclined with respect to the first light emitting device package at an inclination angle between 90° and 160°, wherein the first light emitting device package or the second light emitting device package faces the corner of the light guide plate that corresponds to the edge of one side surface of the light guide plate and provides light to the corner of the light guide plate; and
a reflective pattern including an arc in a form of parts of a circle that is centered on the corner of the light guide plate, wherein the arc is adjacent to the light emitting device array.
2. The lighting device according to claim 1 , wherein the first region is arranged to face the corner of the light guide plate.
3. The lighting device according to claim 1 , wherein the substrate further comprises a third region that is inclined with respect to the first region, and the light emitting device array further comprises a third light emitting device package that is disposed on the third region.
4. The lighting device according to claim 3 , wherein the first region of the substrate is adjacent to the corner of the light guide plate.
5. The lighting device according to claim 1 , wherein the reflective pattern is formed at a bottom surface of the light guide plate.
6. The lighting device according to claim 1 , wherein the reflective pattern comprises a plurality of pattern elements formed such that an interval between each pair of adjacent pattern elements decreases as a distance between the pair of adjacent pattern elements and the light emitting device array increases.
7. The lighting device according to claim 1 , wherein the reflective pattern comprises a plurality of pattern elements formed such that an area of each pattern element increases as a distance between the pattern element and the light emitting device array increases.
8. The lighting device according to claim 1 , wherein the light emitting device array comprises at least two light emitting device arrays that are arranged at different corners of the light guide plate.
9. The lighting device according to claim 8 , wherein the light emitting device arrays are arranged at corners of the light guide plate that correspond to edges of different side surfaces of the light guide plate.
10. The lighting device according to claim 9 , wherein the reflective pattern is formed on a bottom surface of the light guide plate and the light guide plate includes a line that connects two corners other than the two corners at which the light emitting device arrays of the light guide plate are arranged.
11. The lighting device according to claim 8 , wherein the light emitting device arrays are arranged at two corners of the light guide plate that are connected by one side surface of the light guide plate.