LIGHT REFLECTING MEMBER AND MANUFACTURING METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a light reflecting member having high heat resistance and high resistance to collapse.SOLUTION: The light reflecting member is manufactured by applying, on a film-like or sheet-like substrate 1, a thermosetting resin layer 2 being a light reflecting layer which has a glass transition temperature of 180°C or more and has therein independent bubbles 5 having an average bubble diameter of 0.1 to 10 μm. The thermosetting resin layer comprises a fluorinated polyimide resin, and light transmittance at a wavelength 500 nm of the thermosetting resin layer not including bubbles and having a thickness of 18 to 20 μm is 60% or more.