| CPC G02B 5/22 (2013.01) | 12 Claims |

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1. A display device, comprising:
a substrate comprising a surface;
a first light-emitting unit and a second light-emitting unit disposed on the surface;
a first color filter disposed on the first light-emitting unit, wherein the first color filter is in a color of blue; and
a second color filter disposed on the second light-emitting unit and different from the first color filter in color;
wherein the first color filter has a first width, a first distance is between the first color filter and the first light-emitting unit, the second color filter has a second width, and a second distance is between the second color filter and the second light-emitting unit,
wherein the first width, the second width, the first distance, and the second distance satisfy an equation 1:
tan−1[(W1/2)/D1]>tan−1[(W2/2)/D2] [equation 1]
wherein W1 represents the first width, W2 represents the second width, D1 represents the first distance, and D2 represents the second distance.
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