Detection method and detection device for display screen

Abstract

A detection method for a display screen is provided, including: emitting, by a light source, light onto a surface of a display screen to form a diffuse reflection, where the light source includes an initial first color channel value a1 and an initial second color channel value b1; measuring, by a detector, a first color channel value a and a second color channel value b of the reflected light; calculating a color breakup value lab of the reflected light by: lab=√{square root over ((a−a1)2+(b−b1)2)}; calculating, in response to (a+b) being not equal to 0, a hue value ε by: ε=|a+b|/(a+b); calculating a color breakup and hue quantization value φ of the reflected light by: φ=lab×ε=|a+b|√{square root over ((a−a1)2+(b−b1)2)}/(a+b); and determining whether the display screen is qualified based on determining whether the color breakup and hue quantization value φ is within a predetermined quantization value range.

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