| 摘要 |
<p>A method for manufacturing a polyimide film according to an embodiment of the present invention comprises: a step of extruding a polyimide film including polyimide and solvents; a step of primarily drying the extruded polyimide film; a step of exfoliating the primarily dried polyimide film; a step of vaporizing residual solvents by secondarily drying the exfoliated polyimide film; and a step of elongating the secondarily dried polyimide film in a width direction, wherein a residual solvent amount of the secondarily dried polyimide film is 10 wt% or less. The present invention is to manufacture a polymer film with low optical phase delay and low deviation thereof.</p> |
