(6) For the subscript number 1 and 2 of the above equations such as and , the value with subscript 1 can be the value of CIELAB color space for the normal direction to the display and the value with subscript 2 can be the value for other viewing angles. Report Analysis of the measurement result After calculating the CIELAB color difference of 18 reference colors for all defined viewing angles, the average and maximum ΔE00 for each viewing angle shall be used for evaluation of the viewing angle characteristic. Table 2 shows an example report of the measurement data. Example of 18 Reference Color Measurement Data for a Viewing Angle Viewing angle 0° Viewing angle , Color difference (θH φV) No. Color sample L* a* b* L* a* b* ΔE00 38.44 13.61 14.53 1 Dark skin 65.95 17.91 17.87 2 Light skin 50.06 -4.52 -22.25 3 Blue sky 43.28 -13.21 21.94 4 Foliage 55.31 8.82 -24.60 5 Blue flower 70.69 -33.03 -0.11 6 Bluish green 62.65 35.35 57.86 7 Orange 40.24 9.74 -44.35 8 Purple blue 51.60 47.80 16.90 9 Moderate red 30.50 21.07 -20.02 10 Purple 72.46 -23.30 57.00 11 Yellow green 12 71.95 19.46 68.12 Orange yellow 28.87 14.81 -50.15 13 Blue 55.15 -37.80 31.64 14 Green 42.28 54.12 28.67 15 Red 82.27 4.02 79.99 16 Yellow 51.91 49.80 -13.82 17 Magenta 50.72 -28.11 -27.95 18 Cyan 100 0 0 100 0 0 Excluded for 19 White ΔE00 Average color difference ΔE00 Maximum color difference ΔE00 The acquired viewing angle data can be presented in two-dimensional plots as shown in Figure 5. Table 3 shows the average color difference data for each viewing angle.
(6) For the subscript number 1 and 2 of the above equations such as and , the value with subscript 1 can be the value of CIELAB color space for the normal direction to the display and the value with subscript 2 can be the value for other viewing angles. Report Analysis of the measurement result After calculating the CIELAB color difference of 18 reference colors for all defined viewing angles, the average and maximum ΔE00 for each viewing angle shall be used for evaluation of the viewing angle characteristic. Table 2 shows an example report of the measurement data. Example of 18 Reference Color Measurement Data for a Viewing Angle No. Color sample Viewing angle 0° Viewing angle (θH , φV) Color difference L* a* b* L* a* b* ΔE00 1 Dark skin 38.44 13.61 14.53 2 Light skin 65.95 17.91 17.87 3 Blue sky 50.06 -4.52 -22.25 4 Foliage 43.28 -13.21 21.94 5 Blue flower 55.31 8.82 -24.60 6 Bluish green 70.69 -33.03 -0.11 7 Orange 62.65 35.35 57.86 8 Purple blue 40.24 9.74 -44.35 9 Moderate red 51.60 47.80 16.90 10 Purple 30.50 21.07 -20.02 11 Yellow green 72.46 -23.30 57.00 12 Orange yellow 71.95 19.46 68.12 13 Blue 28.87 14.81 -50.15 14 Green 55.15 -37.80 31.64 15 Red 42.28 54.12 28.67 16 Yellow 82.27 4.02 79.99 17 Magenta 51.91 49.80 -13.82 18 Cyan 50.72 -28.11 -27.95 19 White 100 0 0 100 0 0 Excluded for ΔE00 Average color difference ΔE00 Maximum color difference ΔE00 The acquired viewing angle data can be presented in two-dimensional plots as shown in Figure 5. Table 3 shows the average color difference data for each viewing angle.
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