Patent ID: 9025149
Filing Date: 2015-05-05
Classification: G01N,G02B,G02F

Abstract:
1. A screening method of a phosphor-based optical film used in a backlight module, comprising steps of: Step a) dividing an internal surface of the backlight module without the phosphor-based optical film into a plurality of measurement zones, and gaining a transmittance spectrum of each of the plurality of measurement zones; Step b) gaining a chromatic value of each of the plurality of measurement zones after each of the plurality of measurement zones matches the phosphor-based optical film; Step c) checking the chromatic value of each of the plurality of measurement zones gained in Step b) to be within a range of standard chroma; the process of screening of the phosphor-based optical film used in the backlight module being finished if the chromatic value of each of the plurality of measurement zones matching the phosphor-based optical film is in the range of standard chroma; matching at least one measurement zone with a new phosphor-based optical film if the chromatic value of the at least one of the measurement zones matching the phosphor-based optical film is not within the range of standard chroma, and returning to Step b).