| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the following problem: a conventional polarizing film obtained from a liquid crystalline coating liquid containing an azo compound, turns to red because its absorbance in the long wavelength side of the visible ray region (the red region) is less than that in the short wavelength side thereof (the blue region), and to provide a neutral gray polarizing film without such coloring, in the polarizing film obtained from the liquid crystalline coating liquid containing the azo compound. <P>SOLUTION: The absorbance in the long wavelength side of the visible ray region (the red region) is increased so as to be nearly equal to that in the short wavelength side thereof (the blue region) by making the polarizing film which is obtained from the liquid crystalline coating liquid containing the azo compound contain glycerine of a predetermined amount (of 2-50 pts.wt. based on the azo compound of 100 pts.wt.). Accordingly, the absorbance gets nearly flat in the visible ray region, and the polarizing film gets close to neutral gray with only slightest coloring. <P>COPYRIGHT: (C)2009,JPO&INPIT |
