Display device
First Claim
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1. A display device comprising:
- a backlight unit that is divided into a plurality of blocks and is driven by the divided blocks, and includes at least one optical assembly;
a display panel positioned over the backlight unit;
a controller that outputs local dimming values corresponding to brightness of the blocks of the backlight unit, in accordance with an image displayed in the display panel; and
a BLU driver that controls brightness of the blocks of the backlight unit using the local dimming values,wherein the optical assembly includes;
a first layer;
a plurality of light sources that are formed on the first layer and emit light, and a light emitting surface of the light source being formed in the direction crossing the first layer, and at least two of the light sources emitting lights in different directions from each other;
a second layer disposed above the first layer to cover the light sources; and
a reflective layer that is disposed between the first and second layers,wherein the BLU driver receives the local dimming values and outputs a plurality of driving signals, and the driving signals control the brightness of two or more blocks among the blocks of the backlight unit respectively.
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Abstract
According to an embodiment of the present invention, a display device includes a backlight unit that is divided into a plurality of blocks and is driven by the divided blocks, and includes at least one optical assembly, a display panel positioned over the backlight unit, a controller that outputs local dimming values corresponding to brightness of the blocks of the backlight unit, in accordance with an image displayed in the display panel, and a BLU driver that controls brightness of the blocks of the backlight unit using the local dimming values.
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Citations
26 Claims
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1. A display device comprising:
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a backlight unit that is divided into a plurality of blocks and is driven by the divided blocks, and includes at least one optical assembly; a display panel positioned over the backlight unit; a controller that outputs local dimming values corresponding to brightness of the blocks of the backlight unit, in accordance with an image displayed in the display panel; and a BLU driver that controls brightness of the blocks of the backlight unit using the local dimming values, wherein the optical assembly includes; a first layer; a plurality of light sources that are formed on the first layer and emit light, and a light emitting surface of the light source being formed in the direction crossing the first layer, and at least two of the light sources emitting lights in different directions from each other; a second layer disposed above the first layer to cover the light sources; and a reflective layer that is disposed between the first and second layers, wherein the BLU driver receives the local dimming values and outputs a plurality of driving signals, and the driving signals control the brightness of two or more blocks among the blocks of the backlight unit respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 20, 21, 22, 23, 24, 25, 26)
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14. A display device, comprising:
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a backlight unit that is divided into a plurality of blocks and is driven by the divided blocks, and includes at least one optical assembly; a display panel positioned over the backlight unit; a first controller that outputs local dimming values corresponding to brightness of the blocks of the backlight unit, in accordance with an image displayed in the display panel; and a BLU driver that controls brightness of the blocks of the backlight unit using the local dimming values, wherein the optical assembly includes; a first layer; a plurality of light sources that is are formed on the first layer and emit light, and a light emitting surface of the light source being formed in the direction crossing the first layer, and at least two of the light sources emitting lights in different directions from each other; a second layer disposed above the first layer to cover the light sources; and a reflective layer that is disposed between the first and second layers, and wherein the BLU driver includes a driving unit, and the driving unit includes a second controller that receives local dimming values from the first controller and a plurality of driver ICs that output driving signals for controlling the brightness of the two or more blocks respectively. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification