| CPC H01L 33/60 (2013.01) [G02B 5/0236 (2013.01); G02B 5/0278 (2013.01); H01L 25/167 (2013.01); H01L 2933/0091 (2013.01)] | 17 Claims |
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1. A light emitting diode display device comprising:
a light emitting diode over a substrate; and
an optical element including a liquid crystal molecule randomly distributed therein and configured to change a path of light emitted from the light emitting diode,
wherein the optical element includes an upper optical element provided over the light emitting diode, configured to scatter the light emitted from the light emitting diode, and configured to include a plurality of upper liquid crystal layers,
wherein the light emitting diode includes a first light emitting diode for emitting first light having a first peak wavelength and a second light emitting diode for emitting second light having a second peak wavelength shorter than the first peak wavelength,
the upper optical element includes a first upper optical element provided over the first light emitting diode and a second upper optical element provided over the second light emitting diode, and
the first upper optical element and the second upper optical element are spaced apart from each other.
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12. A light emitting diode display device, comprising:
a light emitting diode over a substrate; and
an optical element including a liquid crystal molecule randomly distributed therein and configured to change a path of light emitted from the light emitting diode,
wherein the optical element comprises a lower optical element provided between the substrate and the light emitting diode to scatter or reflect the light emitted from the light emitting diode and including a plurality of lower liquid crystal layers in which cholesteric liquid crystal molecules are disposed,
wherein the light emitting diode includes a first light emitting diode for emitting first light having a first peak wavelength and a second light emitting diode for emitting second light having a second peak wavelength shorter than the first peak wavelength,
the lower optical element includes a first lower optical element provided between the substrate and the first light emitting diode, and a second lower optical element provided between the substrate and the second light emitting diode, and
the first lower optical element and the second lower optical element are spaced apart from each other.
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16. A light emitting diode display device comprising:
a light emitting diode over a substrate;
an upper optical element provided with liquid crystal molecule randomly distributed therein and provided over the light emitting diode; and
a lower optical element provided with liquid crystal molecule randomly distributed therein and provided between the substrate and the light emitting diode,
wherein in operation, light emitted downward from the light emitting diode is reflected or scattered by the lower optical element and has a changed light path in an upward direction,
wherein in operation, light emitted upward from the light emitting diode and the light reflected or scattered by the lower optical element upwardly are scattered while being transmitted through the upper optical element,
wherein the light emitting diode includes a first light emitting diode for emitting first light having a first peak wavelength and a second light emitting diode for emitting second light having a second peak wavelength shorter than the first peak wavelength,
the upper optical element includes a first upper optical element provided over the first light emitting diode and a second upper optical element provided over the second light emitting diode,
the lower optical element includes a first lower optical element provided between the substrate and the first light emitting diode, and a second lower optical element provided between the substrate and the second light emitting diode,
the first upper optical element and the second upper optical element are spaced apart from each other and
the first lower optical element and the second lower optical element are spaced apart from each other.
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17. A light emitting diode display device comprising:
a first light emitting diode and a second light emitting diode over a substrate; and
an optical element including liquid crystal molecules randomly distributed therein, the optical element including a first optical element over the first light emitting diode and a second optical element over the second light emitting diode, the first optical element including a plurality of first liquid crystal pattern areas, the second optical element including a plurality of second liquid crystal pattern areas, and a size of each of the first liquid crystal pattern areas being different from a size of each of the second liquid crystal pattern areas.
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