FIELD: physics.
SUBSTANCE: screening method includes the following steps: a) dividing the inner surface of the backlight module without a phosphorous-based optical film into several measurement zones and obtaining a transmission spectrum of each of the measurement zones; b) obtaining a chromaticity value of each of the measurement zones coinciding with the optical film based on phosphorus; c) checking the chromaticity values obtained in step b) in the interval of standard chromaticity; wherein the screening process is completed if all chromaticity values are in such an interval; matching at least one measurement area with the new phosphorous-based optical film if the chromaticity value of this at least one of the measurement zones is not in the interval and returning to step b).
EFFECT: increased saturation of backlight with deeper penetration and improved colour uniformity.
12 cl, 5 dwg
