PREPARING METHOD FOR POLARIZER, POLARIZER AND POLARIZING PLATE MANUFACTURED BY USING THE SAME

摘要

The present invention provides a kind of manufacturing method of polarizing film, with uniform absorbance in the region of long wavelength and short-wavelength visible light, and has color close to neutral black; It is identical by what is manufactured with polarizer polarizing film. According to the present invention, the manufacturing method of the polarizer, comprising: (one) impregnate swelling step and the film based on polyvinyl alcohol includes that azo dyes have absorbing wavelength 300-550 nm in aqueous solution; The film and iodine class dyestuff of the polyvinyl alcohol of the chromatin expansion of b step; (3) step extends the film of dyeing polyvinyl alcohol. ;The 2016 of copyright KIPO submissions