Ultra-thin polyimide film and composition for manufacturing the same

Abstract

The present invention provides a polyimide film comprising a polyimide having a dianhydride monomer and a diamine monomer as polymerization units, having a thickness relative deviation (R deviation) of 25% or less and having a thickness of 1 μm to 5 μm, wherein the thickness relative deviation (R deviation) is calculated by dividing the thickness deviation by the average thickness of the film and multiplying by 100 (%), and the thickness deviation is the difference between the maximum and minimum thickness values ​​among the thickness values ​​measured along the width direction of the film using a film thickness gauge.