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Table 5 Brightness uniformities of three kinds of mini-CSPLED BLUs with 150-μm-thick QD films

From: High-Uniformity Planar Mini-Chip-Scale Packaged LEDs with Quantum Dot Converter for White Light Source

Mini-CSPLED type 120° 150° 180°
L1 (center) (cd/m2) 9,900 10,319 8,645
L2 (cd/m2) 1,803 2,557 7,110
L3 (cd/m2) 1,393 2,385 7,227
L4 (cd/m2) 2,368 2,405 7,226
L5 (cd/m2) 1,783 2,652 7,050
L1 (center) (%) 100% 100% 100%
L2 (%) 18% 25% 82%
L3 (%) 14% 23% 84%
L4 (%) 24% 23% 84%
L5 (%) 18% 26% 82%
Brightness uniformity (%) 35% 39% 86%