Patent ID: 8393775

Claim:
A light generating device comprising: arrays of light source devices arranged on a first layer and including a plurality of light source devices, the plurality of light source devices including a first light source device and a second light source device configured to emit light in opposite directions, at least one of the first and second light source devices including: a housing having inclined inner walls that define a cavity, a light emitting diode disposed in the cavity and configured to generate the light, and at least one material filled in the cavity; a reflection layer disposed on the first layer and configured to reflect the light emitted from the plurality of light source devices; and a second layer covering the plurality of light source devices and the reflection layer, wherein a first angle θ 1 is formed from a line extending from the inclined inner walls of the housing with respect to a line perpendicular to a light emitting surface of the light emitting diode of the first light source device, a second angle θ 2 is formed from a line connecting a middle point on a surface of the first light source device and a middle point on a surface of the second light source device to a line extending perpendicularly from a light emitting surface of the first light source device, and a difference between the first angle θ 1 and the second angle θ 2 ranges from 0° to about 78°, wherein the plurality of the light source devices positioned on the line extending perpendicularly from the light emitting surface of the first light source device emit light in the same direction as a light emitting direction of the first light source.