Patent ID: 8675151

Claim:
A display apparatus comprising a display panel, and a backlight unit supplying light from a rear of the display panel, wherein the backlight unit comprises: a plurality of light source arrays; a circuit board layer on which the plurality of light source arrays are seated; a first reflection layer formed on the circuit board layer, for reflecting light emitted from the plurality of light source arrays; a pattern layer positioned on a top surface of the plurality of light source arrays; and a vacant layer formed between the first reflection layer and the pattern layer, wherein the vacant layer includes an air layer or a vacuum layer, and the pattern layer includes a second reflection layer having a reflection region that reflects light and a transmission region that transmits light, the second reflection layer including a plurality of holes to transmit the light from the plurality of light source arrays, wherein the backlight unit further comprises: a plurality of supporting portions interposed between the first reflection layer and the second reflection layer to prevent the pattern layer from drooping, and a reflection surface formed on at least one side surface of the vacant layer configuring the backlight unit, wherein the plurality of supporting portions are configured to upwardly protrude from the first reflection layer and to be disposed in spaces between the plurality of light source arrays, wherein the plurality of supporting portions are configured to be transparent, wherein the plurality of light source arrays include: a plurality of first arrays, each array having a plurality of first light sources which are disposed with a predetermined distance away from each other, the light emitting surface of the first light sources facing a first direction; and a plurality of second arrays, each array having a plurality of second light sources which are disposed with a predetermined distance away from each other, the light emitting surfaces of the second light sources facing a second direction, wherein the first arrays and the second arrays are alternately arranged in a third direction which is perpendicular to the first and second directions, wherein the first direction and the second direction are in parallel and opposite to each other, and wherein each first light source of the first array is disposed between adjacent second light sources in the third direction, and each second light source of the second array is disposed between adjacent first light sources in the third direction.