| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a polyimide film restrained in coloring and enhanced in light transmittance, without impairing a physical property such as a heat resistance, and a method of manufacturing the same. <P>SOLUTION: The polyimide film enhanced in light transmittance can be obtained by the method of manufacturing the polyimide film having a step of obtaining a self-supporting film by flow-casting, on a support body, a polyamic acid solution containing a polyamic acid solution obtained by reacting a tetracarboxylic acid component with a diamine component, and a phosphate and/or a salt thereof of 0.00025 pt.wt or more and less than 0.001 pt.wt, per 100 pts.wt of the polyamic acid solution, followed to be dried, and a step of heating the self-supporting film. <P>COPYRIGHT: (C)2013,JPO&INPIT |
