"GB/T 43793.2-2024 Test methods for color photoresists for flat panel displays, Part 2: Optical Properties" describes in detail the test methods for color photoresists for flat panel displays in terms of chroma, luminance and contrast ratio. This standard is applicable to the manufacturing, quality control and research and development process of color photoresists for flat panel displays to ensure that their Optical Properties meet the requirements. The standard refers to a number of necessary normative documents, including Measuring method for object color, Color terminology, terms and symbols for liquid crystal display devices, CIE 1976 L * a * b * Color space, etc., to ensure the scientific and Reliability of the test method.